U.S. patent application number 16/808474 was filed with the patent office on 2020-06-25 for biometric sensor and device including the same.
The applicant listed for this patent is SAMSUNG ELECTRONICS CO., LTD.. Invention is credited to Ji Hun HEO, Se Young JANG, Hyun Woo KIM, Jin Man KIM, Joo Han KIM, Ji Hoon PARK, Bong Jae RHEE.
Application Number | 20200202097 16/808474 |
Document ID | / |
Family ID | 61971990 |
Filed Date | 2020-06-25 |
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United States Patent
Application |
20200202097 |
Kind Code |
A1 |
KIM; Hyun Woo ; et
al. |
June 25, 2020 |
BIOMETRIC SENSOR AND DEVICE INCLUDING THE SAME
Abstract
A display device includes a display panel, a cover glass
disposed on the display panel, and a biometric sensor device
disposed below the display panel. The biometric sensor device
includes a printed circuit board, a biometric sensor disposed on
the printed circuit board, and a housing disposed on the printed
circuit board and in which an opening is formed. The biometric
sensor is disposed in the opening of the housing and is attached to
a surface of the display panel through the housing.
Inventors: |
KIM; Hyun Woo; (Gumi-si,
KR) ; PARK; Ji Hoon; (Suwon-si, KR) ; HEO; Ji
Hun; (Suwon-si, KR) ; KIM; Joo Han; (Gumi-si,
KR) ; KIM; Jin Man; (Gumi-si, KR) ; RHEE; Bong
Jae; (Suwonsi, KR) ; JANG; Se Young;
(Seongnam-si, KR) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
SAMSUNG ELECTRONICS CO., LTD. |
Suwon-si |
|
KR |
|
|
Family ID: |
61971990 |
Appl. No.: |
16/808474 |
Filed: |
March 4, 2020 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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15949253 |
Apr 10, 2018 |
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16808474 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
G06F 3/0414 20130101;
H05K 2201/10151 20130101; H05K 1/147 20130101; H01L 2224/48227
20130101; H01L 27/14618 20130101; G06K 9/0002 20130101; H01L
27/14636 20130101; H01L 2224/48091 20130101; H01L 27/14625
20130101; G06F 1/1637 20130101; H01L 2224/32225 20130101; H05K
2201/066 20130101; G06F 1/1626 20130101; G06F 3/042 20130101; H01L
24/32 20130101; H01L 2224/73265 20130101; G06F 1/1684 20130101;
H01L 24/73 20130101; H01L 27/323 20130101; H04M 1/0266 20130101;
H01L 24/48 20130101; G06F 3/0412 20130101; G06F 2203/04105
20130101; H05K 5/03 20130101; H05K 1/0203 20130101; H04M 1/0277
20130101; H05K 2201/10128 20130101; H04M 1/026 20130101; G06F
1/1643 20130101; H05K 1/181 20130101; G06F 3/0421 20130101; G06K
9/00053 20130101; H01L 27/3234 20130101; H05K 5/0017 20130101; G06F
2203/04109 20130101; H05K 1/189 20130101; H05K 5/0086 20130101;
G06K 9/0004 20130101; H01L 27/3276 20130101; H01L 2224/48106
20130101; H01L 2224/73265 20130101; H01L 2224/32225 20130101; H01L
2224/48227 20130101; H01L 2924/00 20130101 |
International
Class: |
G06K 9/00 20060101
G06K009/00; H04M 1/02 20060101 H04M001/02; G06F 1/16 20060101
G06F001/16; G06F 3/041 20060101 G06F003/041; G06F 3/042 20060101
G06F003/042; H05K 5/00 20060101 H05K005/00; H05K 1/18 20060101
H05K001/18 |
Foreign Application Data
Date |
Code |
Application Number |
Apr 11, 2017 |
KR |
10-2017-0046972 |
Claims
1-17. (canceled)
18. A mobile electronic device comprising: a display panel
including a first surface and a second surface on opposite sides of
the display panel, the first surface comprising a display screen
and configured to face a viewer, and the display panel comprising a
plurality of layers, wherein a portion of the display panel
corresponding to an area of the second surface has at least one
layer less than another portion of the display panel corresponding
to another area of the second surface; a biometric sensor having an
upper surface spaced apart from the second surface of the display
panel by at least an unoccupied space and disposed below the
display panel to collect a signal related to biometric information
through each of an area of the first surface of the display panel,
the area of the second surface of the display panel, and the
unoccupied space; and a housing configured such that the upper
surface of the biometric sensor is spaced apart from the second
surface of the display panel by at least the unoccupied space and
the signal related to biometric information is to be incident on
the upper surface of the biometric sensor.
19. The mobile electronic device of claim 18, wherein the portion
of the display panel forms a recess in a side of the display panel
configured to face away from a viewer, and which is at least
partially defined by the area of the second surface of the display
panel.
20. The mobile electronic device of claim 18, wherein the plurality
of layers of the display panel comprise a first layer comprising a
front panel, and a second layer below the first layer, wherein
surfaces of the first layer comprise the area of the first surface
and the area of the second surface of the display panel, wherein
the second layer has an opening defined therein that corresponds to
the areas of the first and second surfaces of the display panel
such that the signal related to biometric information that passes
through the surfaces of the first layer reaches the upper surface
of the biometric sensor via the unoccupied space and the
opening.
21. The mobile electronic device of claim 18, wherein the housing
has an opening and is attached to the second surface of the display
panel by an adhesive at a periphery of the opening, and wherein the
biometric sensor is disposed to correspond to the opening of the
housing such that the signal related to biometric information that
passes through the first and second surfaces of the display panel
reaches the upper surface of the biometric sensor.
22. The mobile electronic device of claim 18, wherein the housing
is disposed below the display panel and has an opening that
corresponds to the areas of the first and second surfaces of the
display panel, and wherein the biometric sensor is disposed to
correspond to the opening of the housing such that the signal
related to biometric information that passes through the first and
second surfaces of the display panel reaches the upper surface of
the biometric sensor.
23. The mobile electronic device of claim 19, wherein the housing
has an opening proximate the recess in the display panel, and is
attached to the second surface of the display panel by an adhesive
proximate a periphery of the opening, and wherein the biometric
sensor is disposed to correspond to the opening of the housing such
that the signal related to biometric information that passes
through the first and second surfaces of the display panel reaches
the upper surface of the biometric sensor via the unoccupied space
and the recess.
24. The mobile electronic device of claim 19, wherein the housing
has an opening that corresponds to the areas of the first and
second surfaces of the display panel, and the housing is disposed
below the display panel and the recess, and wherein the biometric
sensor is disposed to correspond to the opening of the housing such
that the signal related to biometric information that passes
through the first and second surfaces of the display panel reaches
the upper surface of the biometric sensor.
25. The mobile electronic device of claim 18, wherein the housing
has an opening, is disposed under the portion of the display panel,
and is attached to the second surface of the display panel by an
adhesive proximate a periphery of the opening, and wherein the
biometric sensor is disposed to correspond to at least part of the
opening of the housing such that the signal related to biometric
information that passes through the portion of the display panel
reaches the upper surface of the biometric sensor.
26. The mobile electronic device of claim 18, wherein the housing
is disposed under the portion of the display panel and has an
opening that corresponds to the areas of the first and second
surfaces of the display panel, and wherein the biometric sensor is
disposed to correspond to the opening of the housing such that the
signal related to biometric information that passes through the
portion of the display panel reaches the upper surface of the
biometric sensor.
27. The mobile electronic device of claim 20, wherein the housing
has an opening and is attached to the second surface of the display
panel by an adhesive proximate a periphery of the opening of the
housing, and wherein the biometric sensor is disposed to correspond
to at least part of the opening of the housing and is at least
partially accommodated by the opening of the second layer such that
the signal related to biometric information that passes through the
first and second surfaces of the display panel reaches the upper
surface of the biometric sensor via the unoccupied space.
28. The mobile electronic device of claim 20, wherein the housing
has an opening that corresponds to the areas of the first and
second surfaces of the display panel and is disposed below the
display panel and the opening of the second layer, and wherein the
biometric sensor is disposed to correspond to the opening of the
housing and the opening of the second layer such that the signal
related to biometric information that passes through the first and
second surfaces of the display panel reaches the upper surface of
the biometric sensor.
29. The mobile electronic device of claim 18, wherein the housing
is supported by a circuit board.
30. The mobile electronic device of claim 29, wherein the circuit
board comprises a flexible printed circuit board.
31. The mobile electronic device of claim 18, further comprising a
flexible circuit board disposed below the biometric sensor and
electrically coupled to the biometric sensor, and a metal sheet
provided on the flexible circuit board so as to overlap the
biometric sensor, the flexible circuit board provided between at
least the metal sheet and the biometric sensor.
32. The mobile electronic device of claim 18, further comprising a
flexible circuit board electrically coupled to the display panel
and having an opening defined therein that overlaps an area where
the biometric sensor is provided.
33. A mobile electronic device comprising: a display panel
including a first surface and a second surface on opposite sides of
the display panel, the first surface comprising a display screen
and configured to face a viewer, and the display panel comprising a
plurality of layers, wherein a portion of the display panel
corresponding to an area of the second surface has at least one
layer less than another portion of the display panel corresponding
to another area of the second surface; a biometric sensor having an
upper surface spaced apart from the second surface of the display
panel by at least an unoccupied space and disposed below the
display panel to collect a signal related to biometric information
through each of an area of the first surface of the display panel,
the area of the second surface of the display panel, and the
unoccupied space; and a spacer configured so that the upper surface
of the biometric sensor is spaced apart from the second surface of
the display panel by at least the unoccupied space and the signal
related to biometric information is to be incident on the upper
surface of the biometric sensor via the unoccupied space.
34. The mobile electronic device of claim 33, wherein the spacer is
supported by a circuit board.
35. The mobile electronic device of claim 34, wherein the circuit
board comprises a flexible printed circuit board.
36. The mobile electronic device of claim 33, further comprising a
flexible circuit board disposed below the biometric sensor and
electrically coupled to the biometric sensor, and a metal sheet
provided on the flexible circuit board so as to overlap the
biometric sensor, the flexible circuit board provided between at
least the metal sheet and the biometric sensor.
37. The mobile electronic device of claim 33, further comprising a
flexible circuit board electrically coupled to the display panel
and having an opening defined therein that overlaps an area where
the biometric sensor is provided.
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application is based on and claims priority to a Korean
patent application filed on Apr. 11, 2017 in the Korean
Intellectual Property Office and assigned Serial number
10-2017-0046972, the disclosure of which is incorporated by
reference herein in its entirety.
TECHNICAL FIELD
[0002] The present disclosure relates generally to a biometric
sensor for detecting user's biometric information and a device
including the same.
BACKGROUND
[0003] Recently, technologies for authenticating a user by using
the user's biometric information (e.g., a fingerprint, an iris, or
the like) obtained by a biometric sensor have been developed.
Biometric sensors for fingerprint recognition may be classified
into an optical type, an ultrasonic type, and a capacitive type,
based on a method of obtaining fingerprint information.
[0004] In the case of an optical sensor, it is necessary to
maintain a constant distance between the sensor and a display and
to prevent and/or reduce infiltration of foreign matter (e.g.,
dust) between the sensor and the display. However, due to external
shocks or aging in the process of using an electronic device, the
distance between the display and the sensor may vary, or foreign
matter may infiltrate between the display and the sensor, and
therefore the performance of the sensor may be degraded.
SUMMARY
[0005] Example aspects of the present disclosure address at least
the above-mentioned problems and/or disadvantages and provide at
least the advantages described below. Accordingly, an example
aspect of the present disclosure is to provide a biometric sensor
and a device including the same, in which the biometric sensor has
a structure for stably maintaining the distance between a display
and a sensor and preventing and/or reducing infiltration of foreign
matter between the display and the sensor.
[0006] In accordance with an example aspect of the present
disclosure, a sensor device includes a printed circuit board, a
biometric sensor disposed on the printed circuit board, and a
housing disposed on the printed circuit board and including an
opening in which the biometric sensor is accommodated.
[0007] In accordance with another example aspect of the present
disclosure, a display device includes a display panel, a cover
glass disposed on the display panel, and a biometric sensor device
disposed below the display panel. The biometric sensor device
includes a printed circuit board, a biometric sensor disposed on
the printed circuit board, and a housing in which an opening is
formed. The biometric sensor is accommodated in the opening of the
housing and is attached to a surface of the display panel through
the housing.
[0008] In accordance with another example aspect of the present
disclosure, an electronic device includes a display panel, a cover
glass disposed on the display panel, a biometric sensor device
disposed below the display panel, and a processor electrically
connected with the display panel and the biometric sensor device.
The processor configured to obtain fingerprint information using
the biometric sensor device. The biometric sensor device includes a
printed circuit board, a biometric sensor disposed on the printed
circuit board, and a housing in which an opening is formed. The
biometric sensor is accommodated in the opening of the housing and
is attached to a surface of the display panel through the
housing.
[0009] According to various example embodiments of the present
disclosure, by stably maintaining the distance between a display
and a sensor and preventing and/or reducing infiltration of foreign
matter between the display and the sensor, it is possible to
prevent and/or reduce performance degradation of the sensor.
[0010] Other aspects, advantages, and salient features of the
disclosure will become apparent to those skilled in the art from
the following detailed description, which, taken in conjunction
with the annexed drawings, discloses various embodiments of the
present disclosure.
BRIEF DESCRIPTION OF THE DRAWINGS
[0011] The above and other aspects, features, and attendant
advantages of the present disclosure will be more apparent and
readily appreciated from the following detailed description, taken
in conjunction with the accompanying drawings, in which like
reference numerals refer to like elements, and wherein:
[0012] FIG. 1 is a block diagram illustrating an example electronic
device in a network environment according to various example
embodiments of the present disclosure;
[0013] FIG. 2 is a diagram illustrating an example external
appearance of an electronic device according to an example
embodiment of the present disclosure;
[0014] FIG. 3 is an exploded perspective view illustrating an
example electronic device according to an example embodiment of the
present disclosure;
[0015] FIGS. 4A and 4B are diagrams illustrating an example
coupling structure of an electronic device according to an example
embodiment of the present disclosure;
[0016] FIG. 5 is a sectional view illustrating an example
electronic device according to an example embodiment of the present
disclosure;
[0017] FIG. 6 is a diagram illustrating an example package
structure of a biometric sensor module according to an example
embodiment of the present disclosure;
[0018] FIG. 7A is a sectional view illustrating an example
biometric sensor module according to an example embodiment of the
present disclosure;
[0019] FIG. 7B is a sectional view illustrating an example
biometric sensor module according to an example embodiment of the
present disclosure;
[0020] FIG. 8 is a diagram illustrating a portion of an example
package structure of a biometric sensor module according to an
example embodiment of the present disclosure;
[0021] FIG. 9 is a sectional view illustrating an example
electronic device according to an example embodiment of the present
disclosure; and
[0022] FIGS. 10A and 10B are diagrams illustrating an example
process of manufacturing a biometric sensor, according to an
example embodiment of the present disclosure.
[0023] Throughout the drawings, it should be noted that like
reference numbers are used to depict the same or similar elements,
features, and structures.
DETAILED DESCRIPTION
[0024] Hereinafter, various example embodiments of the present
disclosure will be described with reference to the accompanying
drawings. However, those of ordinary skill in the art will
recognize that modifications, equivalents, and/or alternatives on
the various embodiments described herein can be variously made
without departing from the scope and spirit of the present
disclosure. With regard to description of drawings, similar
elements may be marked by similar reference numbers.
[0025] FIG. 1 is a block diagram illustrating an example electronic
device in a network environment according to various example
embodiments of the present disclosure.
[0026] Referring to FIG. 1, in a network environment 100, an
electronic device 101 may communicate with an electronic device 102
through a short-range wireless communication 198, or may
communicate with an electronic device 104 or a server 108 through a
network 199. According to an embodiment, the electronic device 101
may communicate with the electronic device 104 through the server
108. According to an embodiment, the electronic device 101 may
include a processor (e.g., including processing circuitry) 120, a
memory 130, an input device 150 (e.g., including input circuitry,
such as, for example, and without limitation, a microphone or a
mouse), a display device 160, an audio module (e.g., including
audio circuitry) 170, a sensor module (e.g., including sensing
circuitry and/or a sensor) 176, an interface (e.g., including
interface circuitry) 177, a haptic module (e.g., including haptic
circuitry) 179, a camera module (e.g., including image capturing
circuitry) 180, a power management module 188, a battery 189, a
communication module (e.g., including communication circuitry) 190,
and a subscriber identification module 196. In some embodiments,
the electronic device 101 may not include at least one (e.g., the
display device 160 or the camera module 180) of the aforementioned
elements, or may further include other elements. In some
embodiments, some of the elements may be integrated, as in the case
of the sensor module 176 (e.g., a fingerprint sensor, an iris
sensor, or an illuminance sensor) embedded in the display device
160 (e.g., a display).
[0027] The processor 120 may include various processing circuitry
and drive, for example, an operating system or an application
program to control at least one other element (e.g., a hardware or
software element) of the electronic device 101 that is connected to
the processor 120, and may process and compute a variety of data.
The processor 120 may load instructions or data received from other
elements (e.g., the sensor module 176 or the communication module
190) into a volatile memory 132, may process the loaded
instructions or data, and may store result data in a non-volatile
memory 134. The processor 120 may include various processing
circuitry, such as, for example, and without limitation, one or
more of a dedicated processor, a central processing unit, an
application processor, a graphic processing unit, an image signal
processor, a sensor hub processor, and a communication processor,
or the like. According to an embodiment, the processor 120 may
include, for example, and without limitation, a main processor 121
(e.g., a central processing unit or an application processor, or
the like) and a coprocessor 123 (e.g., a graphic processing unit,
an image signal processor, a sensor hub processor, or a
communication processor, or the like) that operates independently
of the main processor 121 and additionally or alternatively, uses
less power than the main processor 121 or specializes in a
specified function. In this case, the coprocessor 123 may control
at least a part of functions or states relating to at least one
(e.g., the display device 160, the sensor module 176, or the
communication module 190) of the elements 130 to 196 of the
electronic device 101, for example, instead of the main processor
121 while the main processor 121 is in an inactive (e.g., sleep)
state or along with the main processor 121 while the main processor
121 is in an active (e.g., application execution) state. According
to an embodiment, the coprocessor 123 (e.g., an image signal
processor or a communication processor) may be implemented as a
part of other functionally related elements (e.g., the camera
module 180 or the communication module 190). According to an
embodiment, the processor 120 may be implemented with a system on
chip (SoC) or a system in package (SiP).
[0028] The memory 130 may store a variety of data (e.g., a software
element (e.g., a program 140) and input or output data for
instructions relating to the software element) used by at least one
element (e.g., the processor 120 or the sensor module 176) of the
electronic device 101. The memory 130 may include the volatile
memory 132 and/or the non-volatile memory 134. The volatile memory
132 may be configured with, for example, a random access memory
(RAM) (e.g., a DRAM, an SRAM, or an SDRAM). The non-volatile memory
134 may be configured with, for example, a one-time programmable
read-only memory (OTPROM), a programmable read-only memory (PROM),
an erasable programmable read-only memory (EPROM), an electrically
erasable programmable read-only memory (EEPROM), a mask ROM, a
flash ROM, a flash memory, a hard disk drive, or a solid state
drive (SSD). Furthermore, depending on the type of connection to
the electronic device 101, the non-volatile memory 134 may be
configured with an internal memory 136 disposed in the electronic
device 101 and/or an external memory 138 of a stand-alone type that
is intended to be connected to the electronic device 101 only when
necessary. The external memory 138 may include, for example, a hard
disk, a floppy disk, a magnetic medium (e.g., a magnetic tape), an
optical recording medium (e.g., a compact disc read only memory
(CD-ROM), a digital versatile disc (DVD), or a magneto-optical
medium (e.g., a floptical disk)), a flash drive (e.g., compact
flash (CF), secure digital (SD), micro secure digital (Micro-SD),
mini secure digital (Mini-SD), extreme digital (xD), a multimedia
card (MMC), or a memory stick). The external memory 138 may be
operatively or physically connected with the electronic device 101
through wired connection (e.g., a universal serial bus (USB)) or
wireless connection (e.g., Bluetooth).
[0029] The program 140, which is a software element stored in the
memory 130, may include, for example, a kernel 141, a library 143,
an application framework 145, or an application program
(interchangeably referred to as "an application") 147.
[0030] The input device 150 may include various input circuitry and
receive instructions or data to be used for an element (e.g., the
processor 120) of the electronic device 101 from outside (e.g., a
user) of the electronic device 101 and may include various input
circuitry, such as, for example, and without limitation, one or
more of a microphone, a mouse, or a keyboard, or the like.
According to an embodiment, the keyboard may include a physical
keyboard or a virtual keyboard displayed through the display device
160.
[0031] The display device 160 may visually provide information to a
user of the electronic device 101 and may include, for example, a
display, a hologram device, or a projector and a control circuit
for controlling the corresponding device. The display may include,
for example, a liquid crystal display (LCD), a light-emitting diode
(LED) display, an organic light-emitting diode (OLED) display, a
microelectromechanical systems (MEMS) display, or an electronic
paper display, or the like, but is not limited thereto. The
display, according to an embodiment, may be implemented to be
flexible, transparent, or wearable on a part of a human body.
According to an embodiment, the display may include touch circuitry
for detecting a user's touch, gesture, proximity, or hovering input
or a pressure sensor (interchangeably referred to as a force
sensor) for measuring the strength of touch pressure. The touch
circuitry or the pressure sensor may be implemented integrally with
the display or may be implemented with one or more sensors separate
from the display. The hologram device may show a three-dimensional
image in the air by using a light interference phenomenon. The
projector may project light onto a screen located inside or outside
the electronic device 101 to display an image.
[0032] The audio module 170 may include various audio circuitry and
bilaterally convert between a sound and an electric signal.
According to an embodiment, the audio module 170 may obtain a sound
through an input device 150 (e.g., a microphone) or may output a
sound through a sound output device (not illustrated) (e.g., a
speaker or a receiver) included in the electronic device 101 or an
external electronic device (e.g., the electronic device 102 (e.g.,
a speaker or headphones)) connected with the electronic device 101
in a wired or wireless manner.
[0033] The sensor module 176 may include various sensing
circuitry/sensors that measure or detect an operating status (e.g.,
power or temperature) inside the electronic device 101 or an
environmental status (e.g., altitude, humidity, or brightness)
outside the electronic device 101 to generate an electrical signal
or a data value that corresponds to the measured or detected status
information. The sensor module 176 may include, for example, and
without limitation, a gesture sensor, a gyro sensor, a barometric
pressure sensor, a magnetic sensor, an acceleration sensor, a grip
sensor, a proximity sensor, a color sensor (e.g., a red, green,
blue (RGB) sensor), an infrared (IR) sensor, a biometric sensor
(e.g., an iris sensor, a fingerprint sensor, heartbeat rate
monitoring (HRM), an e-nose sensor, an electromyography (EMG)
sensor, an electroencephalogram (EEG) sensor, or an
electrocardiogram (ECG) sensor), a temperature sensor, a humidity
sensor, an illuminance sensor, or a ultra violet (UV) sensor, or
the like. The sensor module 176 may further include a control
circuit for controlling one or more sensors included therein. In
some embodiments, the sensor module 176 may be controlled by the
main processor 121 (e.g., an application processor) or the
coprocessor 123 (e.g., a sensor hub processor) that operates
independently of the main processor 121. In this case, for example,
while the main processor 121 (e.g., an application processor) is in
a sleep state, at least a part of operations or states of the
sensor module 176 may be controlled by operating a separate
low-power processor without waking up the main processor 121 (e.g.,
an application processor).
[0034] The interface 177 may include various interface circuitry
and provide a means for connecting with an external electronic
device (e.g., the electronic device 102) based on a specified
standard. According to an embodiment, the interface 177 may include
various interface circuitry, such as, for example, and without
limitation, a high definition multi-media interface (HDMI), a
universal serial bus (USB) interface, an optical interface, a
recommended standard 232 (RS-232) interface, a D-subminiature
(D-sub) interface, a mobile high-definition link (MHL) interface,
an SD card interface, a multi-media card (MMC) interface, or an
audio interface, or the like.
[0035] A connecting terminal 178 may physically connect the
electronic device 101 and an external electronic device (e.g., the
electronic device 102). According to an embodiment, the connecting
terminal 178 may include, for example, an HDMI connector, a USB
connector, an SD card, an MMC connector, or an audio connector
(e.g., a headphone connector), or the like, but is not limited
thereto.
[0036] The haptic module 179 may include various haptic circuitry
and convert an electrical signal into mechanical stimulation (e.g.,
vibration or motion) or electrical stimulation that a user is able
to recognize through a tactile sensation or a kinesthetic
sensation. The haptic module 179 may include, for example, and
without limitation, a motor, a piezoelectric element, or an
electrical stimulation device, or the like.
[0037] The camera module 180 may include various image capturing
circuitry and take a still image and a video. According to an
embodiment, the camera module 180 may include, for example, and
without limitation, one or more lenses (e.g., a wide-angle lens and
a telephoto lens, or a front lens and a rear lens), an image
sensor, an image signal processor, or a flash (e.g., a
light-emitting diode, a xenon lamp, or the like), or the like.
[0038] The power management module 188 may manage power supplied to
the electronic device 101 and may be configured as, for example, at
least a part of a power management integrated circuit (PMIC).
[0039] The battery 189 may supply power to at least one element of
the electronic device 101 and may include, for example, a
non-rechargeable primary cell, or a rechargeable secondary cell or
a fuel cell.
[0040] The communication module 190 may include various
communication circuitry and establish a wired or wireless
communication channel between the electronic device 101 and an
external electronic device (e.g., the electronic device 102, the
electronic device 104, or the server 108) and may perform
communication through the established communication channel.
According to an embodiment, the communication module 190 may
include, for example, and without limitation, a wireless
communication module 192 and a wired communication module 194, or
the like, and may communicate with an external electronic device
(e.g., the first external electronic device 102, the second
external electronic device 104, or the server 108) through the
first network 198 (e.g., a short-range communication network, such
as Bluetooth, Wi-Fi direct, or infrared data association (IrDA)) or
the second network 199 (e.g., a long-range communication network,
such as a cellular network, Internet, or a computer network (e.g.,
LAN or WAN)) by using the corresponding communication module.
[0041] The wireless communication module 192 may support, for
example, cellular communication, short-range wireless
communication, or global navigation satellite system (GNSS)
communication. The cellular communication may include, for example,
long-term evolution (LTE), LTE advanced (LTE-A), code division
multiple access (CDMA), wideband CDMA (WCDMA), universal mobile
telecommunications system (UMTS), wireless broadband (WiBro), or
global system for mobile communications (GSM). The short-range
wireless communication may include, for example, wireless fidelity
(Wi-Fi), Wi-Fi direct, light fidelity (LiFi), Bluetooth, Bluetooth
low energy (BLE), Zigbee, near field communication (NFC), magnetic
secure transmission (MST), radio frequency (RF), or a body area
network (BAN). The GNSS may include, for example, a global
positioning system (GPS), a global navigation satellite system
(Glonass), a Beidou navigation satellite system (hereinafter
referred to as "Beidou"), or the European global satellite-based
navigation system (hereinafter referred to as "Galileo").
Hereinafter, in this disclosure, "GPS" may be used interchangeably
with "GNSS".
[0042] According to an embodiment, the wireless communication
module 192 may identify and authenticate the electronic device 101
in a communication network using, for example, the subscriber
identification module (e.g., a SIM card) 196 in the case where the
wireless communication module 192 supports cellular communication.
According to an embodiment, the wireless communication module 192
may include, for example, and without limitation, a communication
processor (CP) that operates independently of the processor 120
(e.g., an application processor (AP)), or the like. In this case,
the communication processor may perform at least a part of
functions relating to at least one of the elements 130 to 196 of
the electronic device 101, for example, instead of the processor
120 while the processor 120 is in an inactive (e.g., sleep) state
or along with the processor 120 while the processor 120 is in an
active state. According to an embodiment, the wireless
communication module 192 may be configured with a plurality of
communication modules supporting only the corresponding
communication method, among a cellular communication module, a
short-range wireless communication module, and a GNSS communication
module.
[0043] The wired communication module 194 may include, for example,
a communication processor supporting a wired communication method,
such as a local area network (LAN), power line communication, or a
plain old telephone service (POTS).
[0044] Some of the elements 120 to 196 may be connected together
through an inter-peripheral communication method (e.g., a bus, a
general purpose input/output (GPIO), a serial peripheral interface
(SPI), or a mobile industry processor interface (MIPI)) to exchange
signals (e.g., instructions or data) with one another.
[0045] According to an embodiment, the instructions or data may be
transmitted or received between the electronic device 101 and the
second external electronic device 104 through the server 108
connected to the second network 199. The first and second external
electronic devices 102 and 104 may each be of a type that is the
same as or different from that of the electronic device 101.
According to an embodiment, all or a part of operations that the
electronic device 101 will perform may be executed by another
external electronic device or a plurality of external electronic
devices (e.g., the electronic device 102 or 104 or the server 108).
According to an embodiment, in the case where the electronic device
101 has to perform any function or service automatically or in
response to a request, the electronic device 101 may request at
least some functions associated with the function or service from
another device (e.g., the electronic device 102 or 104 or the
server 108), instead of or in addition to executing the function or
service by itself. The other electronic device (e.g., the
electronic device 102 or 104 or the server 108), which has received
the request, may execute the requested functions or additional
functions and may transmit the execution result to the electronic
device 101. The electronic device 101 may provide the requested
function or service using the received result or may additionally
process the received result to provide the requested function or
service. To this end, for example, cloud computing, distributed
computing, or client-server computing may be used.
[0046] FIG. 2 is a diagram illustrating an example external
appearance of an electronic device according to an example
embodiment of the present disclosure.
[0047] Referring to FIG. 2, according to an embodiment, a display
(or a display panel) 210 and a housing 220 may be exposed on a
front surface of an electronic device 201. According to an
embodiment, the electronic device 201 may include a variety of
non-illustrated hardware modules. For example, the display 210 may
have, on a rear surface thereof, a pressure sensor for sensing the
strength (or pressure) of a user's touch input and/or a biometric
sensor for detecting the user's fingerprint.
[0048] According to an embodiment, the electronic device 201 may
detect the user's fingerprint through a second area 212 of the
display 210. To this end, a biometric sensor for detecting the
fingerprint may be disposed on a rear surface of the second area
212 of the display 210.
[0049] According to various embodiments of the present disclosure,
the biometric sensor may provide a sensor package structure that is
capable of maintaining an appropriate distance from the display 210
to accurately obtain the user's fingerprint information and
preventing and/or reducing performance degradation caused by
infiltration of foreign matter outside the biometric sensor even
though disposed on the rear surface of the display 210.
[0050] The electronic device 201 in FIG. 2 is merely illustrative,
and the present disclosure is not limited thereto. For example, a
receiver, a camera module, an iris sensor, or other biometric
sensors may be disposed on the rear surface of the display 210.
[0051] FIG. 3 is an exploded perspective view illustrating an
example electronic device according to an example embodiment of the
present disclosure.
[0052] Referring to FIG. 3, an electronic device 301 (e.g., the
electronic device 201) according to an embodiment may include a
cover glass 310, a display (or a display panel) 320 (e.g., the
display 210), a pressure sensor 330, a biometric sensor module 340
(e.g., a biometric sensor circuit, a biometric sensor device, or a
biometric sensor means, for example, and without limitation, a
fingerprint sensor), a housing 350 (e.g., the housing 220), a
printed circuit board 360, a battery 370, and a back cover 380.
According to various embodiments, the electronic device 301 may not
include some of the elements illustrated in FIG. 3 and may further
include elements not being illustrated in FIG. 3.
[0053] The cover glass 310 may pass light generated by the display
320. Furthermore, a user may perform a touch (including contact
using an electronic pen) by touching the cover glass 310 with a
part (e.g., a finger) of his/her body. The cover glass 310 may
comprise, for example, reinforced glass, reinforced plastic, a
flexible polymer material, or the like, but is not limited thereto,
to protect the display 320 and elements included in the electronic
device 301 from, for example, external shocks. According to various
embodiments, the cover glass 310 may also be referred to as a glass
window.
[0054] The display 320 may be disposed and/or coupled below the
cover glass 310 and may be exposed through at least a portion of
the cover glass 310. The display 320 may output contents (e.g.,
text, an image, a video, an icon, a widget, a symbol, or the like)
or may receive a touch input or an electronic pen input from the
user.
[0055] According to an embodiment, the display 320 may include a
display panel, a touch sensor, and/or an electronic pen sensor. The
display panel may include, for example, a liquid crystal display
(LCD) panel, a light-emitting diode (LED) display panel, an organic
light-emitting diode (OLED) display panel, a microelectromechanical
systems (MEMS) display panel, or an electronic paper display panel,
or the like, but is not limited thereto. The touch sensor may, for
example, include a capacitive touch panel, a pressure-sensitive
touch panel, a resistive touch panel, an infrared touch panel, or
an ultrasonic touch panel, or the like, but is not limited thereto.
The touch sensor may be inserted into the display panel (an add-on
touch panel), may be directly formed on the display panel (an
on-cell touch panel), or may be included in the display panel (an
in-cell touch panel). The electronic pen sensor (e.g., a digitizer)
may detect a touch input, a gesture input, a hovering input, or the
like from an electronic pen.
[0056] According to an embodiment, the display 320 may include a
planar area 321 and a bending area 322 extending from one side
(e.g., an upper side, a lower side, a left side, or a right side)
of the planar area 321. Pixels (e.g., OLEDs) of the display panel,
a conductive pattern of the touch sensor, and/or a conductive
pattern of the electronic pen sensor may be disposed in the planar
area 321. The bending area 322 may be electrically connected with
an FPCB 323 on a rear surface of the display 320 through various
conductive patterns (interconnection wires).
[0057] According to an embodiment, a portion of the bending area
322 may be folded toward a rear surface of the planar area 321.
According to various embodiments, interconnection wiring of the
FPCB 323 may be electrically connected with the printed circuit
board 360 through a specified connector. According to various
embodiments, the bending area 322 may have pixels disposed therein
for displaying various pieces of information, similarly to the
planar area 321, depending on the design of the electronic device
301.
[0058] The pressure sensor 330 may be disposed and/or coupled below
the display 320. For example, the pressure sensor 330 may be
disposed between the planar area 321 of the display 320 and the
FPCB 323. The pressure sensor 330 may detect or sense external
pressure (or force) exerted on the cover glass 310 by, for example,
the user's finger. According to an embodiment, the pressure sensor
330 may include a plurality of electrodes and dielectric layers.
For example, the pressure sensor 330 may detect touch pressure on
the basis of a variation in electrostatic capacitance between a
first electrode and a second electrode, which is caused by the
user's touch.
[0059] The biometric sensor module 340 (e.g., a fingerprint sensor,
or the like) may be disposed and/or coupled below the display 320.
For example, the biometric sensor module 340 may be attached to the
planar area 321 of the display 320. According to an embodiment, the
pressure sensor 330 may include a sensor mounting area (or hole or
opening) formed through a front surface and a rear surface thereof
for placement of the biometric sensor module 340. The biometric
sensor module 340 may be inserted into the sensor mounting area of
the pressure sensor 330 and may be arranged side by side with the
pressure sensor 330.
[0060] The biometric sensor module 340 may sense the user's
biometric information (e.g., fingerprint information, or the like).
The biometric sensor module 340 may include, for example, an
optical biometric sensor. For example, the biometric sensor module
340 may capture the user's fingerprint image using an embedded
image sensor (e.g., a complementary metal oxide semiconductor
(CMOS) image sensor or a charge coupled device (CCD) image sensor).
Unique fingerprint minutiae may be extracted from the fingerprint
image and may be compared with fingerprint minutiae registered in
advance to authenticate the user.
[0061] The biometric sensor module 340 may obtain fingerprint
information by receiving at least a portion of light output from at
least one light-emitting element included in the display 320, for
example, by receiving light reflected by the user's finger.
According to various embodiments, the biometric sensor module 340
may include a light-emitting part and a light-receiving part and
may obtain the fingerprint information by outputting light using
the light-emitting part and receiving the light reflected by an
external object (e.g., a finger) through the light-receiving
part.
[0062] The housing 350 may form at least a portion of the external
appearance of the electronic device 301 and may accommodate
elements included in the electronic device 301. For example, the
housing 350 may form a lateral side (e.g., an upper side, a lower
side, a left side, and/or a right side) of the electronic device
301. According to various embodiments, the housing 350 may include
a plurality of housings. The housing 350 may also be referred to as
a rear case or a rear plate. According to an embodiment, at least a
part of sides of the housing 350 may include metal to function as
an antenna structure.
[0063] According to an embodiment, the housing 350 may include a
bracket. The bracket may be include, for example, a magnesium alloy
and may be disposed below the display 320 and above the printed
circuit board 360. The bracket may be coupled with the display 320
and the printed circuit board 360 to physically support the display
320 and the printed circuit board 360.
[0064] According to an embodiment, the printed circuit board 360
may be disposed below (or above) the housing 350. Various types of
electronic components, elements, and printed circuits (e.g., a
processor, a memory, a communication circuit, and the like) of the
electronic device 301 may be mounted or arranged on the printed
circuit board 360. According to various embodiments, the printed
circuit board 360 may be referred to as a main board or a printed
board assembly (PBA), or may be simply referred to as a PCB. The
printed circuit board 360 may include, for example, a main printed
circuit board and a sub-printed circuit board. According to an
embodiment, the main printed circuit board and the sub-printed
circuit board may be electrically connected together through a
specified connector or specified interconnection wiring. The
printed circuit board 360 may be implemented with, for example, a
rigid printed circuit board (rigid PCB) and/or a flexible printed
circuit board (FPCB).
[0065] The battery 370 may bilaterally convert between chemical
energy and electrical energy. For example, the battery 370 may
convert chemical energy into electrical energy and may supply the
electrical energy to the display 320, the pressure sensor 330, the
biometric sensor module 340, and various elements or modules
connected to the printed circuit board 360. According to an
embodiment, the printed circuit board 360 may include a power
management module (e.g., a power management integrated circuit
(PMIC)) for managing charge/discharge of the battery 370.
[0066] The back cover 380 may be coupled to a rear surface of the
electronic device 301. The back cover 380 may include reinforced
glass, a plastic injection-molded material, and/or metal, or the
like. According to various embodiments, the back cover 380 may be
implemented integrally with the housing 350 or may be implemented
to be detachable by the user.
[0067] FIGS. 4A and 4B are diagrams illustrating example coupling
structures of an electronic device according to an example
embodiment of the present disclosure.
[0068] FIGS. 4A and 4B are rear perspective views of an electronic
device 401.
[0069] Referring to FIG. 4A, the electronic device 401 (e.g., the
electronic device 301 of FIG. 3) according to an embodiment may
include a display (or a display panel) 420 (e.g., the display 320
of FIG. 3) and a pressure sensor 430 (e.g., the pressure sensor 330
of FIG. 3). Referring to FIG. 4B, the electronic device 401 (e.g.,
the electronic device 301 of FIG. 3) according to an embodiment may
further include a biometric sensor module 440 (e.g., the biometric
sensor module 340 of FIG. 3).
[0070] According to an embodiment, the display 420 may include a
panel layer 421 and a layer 425. According to an embodiment, the
panel layer 421 may include at least one light-emitting element.
According to an embodiment, the panel layer 421 may include at
least one hole or gap through which light in a specific wavelength
range passes. For example, the panel layer 421 may include at least
one gap between a plurality of pixels and interconnection wires.
Reflective light reflected by a user's finger after output from the
panel layer 421 may reach the biometric sensor module 440 through
the at least one gap included in the panel layer 421. According to
an embodiment, the layer 425 may be disposed to face a rear surface
of the panel layer 421. According to an embodiment, the layer 425
may include a sensor mounting area 427 for accommodating the
biometric sensor module 440 (e.g., the biometric sensor module 340
of FIG. 3). The sensor mounting area 427 may be formed through a
front surface and a rear surface of the layer 425 such that the
biometric sensor module 440 inserted into the sensor mounting area
427 faces an area of the panel layer 421.
[0071] Referring to an image 5 obtained by magnifying an area 3 of
the layer 425, the layer 425 may include a first layer 425-1 and a
second layer 425-2. According to an embodiment, through-holes (or
openings) formed through the first and second layers 425-1 and
425-2 may have different sizes, respectively. For example, the
through-hole of the second layer 425-2 may have a larger area than
the through-hole of the first layer 425-1.
[0072] According to an embodiment, the display 420 may include a
printed circuit board 423 (e.g., the FPCB 323 of FIG. 3) on which a
display IC and/or a touch sensor IC is disposed. According to an
embodiment, the printed circuit board 423 may extend from one side
(e.g., a lower side) of the panel layer 421 and may be electrically
connected with the panel layer 421.
[0073] According to an embodiment, the pressure sensor 430 may
include a sensor mounting area 431 for accommodating the biometric
sensor module 440. The sensor mounting area 431 of the pressure
sensor 430 may have the shape of an opening formed through a front
surface and a rear surface of the pressure sensor 430. Accordingly,
the biometric sensor module 440 may be disposed to face an area of
the panel layer 421 through the sensor mounting area 431 of the
pressure sensor 430. According to an embodiment, the sensor
mounting area 431 of the pressure sensor 430 may have an area
larger than or equal to that of the sensor mounting area 427 of the
layer 425.
[0074] According to an embodiment, the printed circuit board 423
may be folded toward the rear surface of the layer 425 and attached
to the layer 425 and the pressure sensor 430 to overlap at least a
portion of the layer 425 and the pressure sensor 430.
[0075] Referring to FIG. 4B, the biometric sensor module 440 (e.g.,
the biometric sensor module 340 of FIG. 3) may be attached to a
rear surface of the display 420. For example, one surface of the
biometric sensor module 440 may be attached to the first layer
425-1 of the layer 425 after passing through the pressure sensor
430 and the second layer 425-2 of the layer 425.
[0076] FIG. 5 is a sectional view illustrating an example
electronic device according to an example embodiment of the present
disclosure.
[0077] The sectional view illustrated in FIG. 5 corresponds to a
sectional view in the state in which a biometric sensor module
(e.g., the biometric sensor module 340 of FIG. 3) is not attached
to a display 520. Referring to FIG. 5, an electronic device 501
(e.g., the electronic device 301 of FIG. 3) may include a cover
glass 510 (e.g., the cover glass 310 of FIG. 3), the display (or a
display panel) 520 (e.g., the display 320 of FIG. 3), and a
pressure sensor 530 (e.g., the pressure sensor 330 of FIG. 3).
[0078] The cover glass 510 may be located in the top layer of the
electronic device 501. The display 520 may be disposed below the
cover glass 510. The display 520 may include a panel layer (or a
front panel) 521 (e.g., the panel layer 421) and a layer 525 (e.g.,
the layer 425). According to an embodiment, the panel layer 521 may
include at least one light-emitting element and may be disposed
below the cover glass 510. According to an embodiment, the layer
525 may be disposed below the panel layer 521. According to an
embodiment, the layer 525 may include a first layer 525-1 (e.g.,
the first layer 425-1) and a second layer 525-2 (e.g., the second
layer 425-2). The first layer 525-1 may include, for example, a
support member (e.g., EMBO) 51 having a pattern formed thereon, a
digitizer (or an electronic pen sensor) 53 for receiving an input
from an electronic pen, and a metal layer 55 (e.g., a copper
layer). The support member 51 may absorb external shocks to the
panel layer 521, may enhance an optical characteristic of the panel
layer 521, and may visually hide a pattern included in the
digitizer 53. The second layer 525-2 may include, for example, a
heat dissipation sheet 57 for performing a heat dissipation
function and a cushion layer 59 for absorbing external shocks. The
stack structure of the first layer 525-1 and the second layer
525-2, which is illustrated in FIG. 5, is merely illustrative, and
the layer 525 may not include some of the plurality of layers
illustrated in FIG. 5, or may further include at least one other
layer. Alternatively, the positions of at least some of the
plurality of layers may be changed. For example, the layer 525 may
not include the digitizer 53 and the metal layer 55 illustrated in
FIG. 5. In another example, the layer 525 may not include the
support member 51 and the heat dissipation sheet 57.
[0079] According to an embodiment, through-holes (or openings)
formed through the first and second layers 525-1 and 525-2 may have
different sizes, respectively. For example, the through-hole of the
second layer 525-2 may have a width w2 larger than the width w1 of
the through-hole of the first layer 525-1. Accordingly, the layer
525 may have a stepped structure formed by the first layer 525-1
and the second layer 525-2.
[0080] According to an embodiment, the pressure sensor 530 may be
disposed below the layer 525. According to an embodiment, a printed
circuit board 523 may be disposed below the pressure sensor 530.
For example, as described with reference to FIG. 4A, the printed
circuit board 523 may extend from one side of the display 520
(e.g., the panel layer 521) and may be folded toward a rear surface
of the layer 525 and attached to the pressure sensor 530. According
to an embodiment, the electronic device 501 may include the
pressure sensor 530.
[0081] FIG. 6 is a diagram illustrating an example package
structure of a biometric sensor module according to an example
embodiment of the present disclosure.
[0082] In FIG. 6, diagram <61> illustrates a perspective view
of a biometric sensor module (or a biometric sensor device or a
biometric sensor circuit) (e.g., a fingerprint sensor) 640 (e.g.,
the biometric sensor module 340 of FIG. 3), diagram <62>
illustrates a front view of the biometric sensor module 640, and
diagram <63> illustrates a rear view of the biometric sensor
module 640.
[0083] Referring to FIG. 6, the biometric sensor module 640 may
include a printed circuit board 641, a housing 642, an image sensor
(or an image sensor array) 643, an optical layer 644, an optical
filter layer 645, an adhesive member 646, a conductive wire 647,
and a magnetic screen layer 648 (e.g., a magnetic metal powder
sheet). The image sensor 643, the optical layer 644, and the
optical filter layer 645 may be combined to form one package
structure and may be referred to as, for example, a biometric
sensor. According to various embodiments, the biometric sensor
module 640 may not include some of the elements illustrated in FIG.
6 and may further include elements not being illustrated in FIG.
6.
[0084] According to an embodiment, the printed circuit board 641
may include a rigid printed circuit board (RPCB) 641-1 and a
flexible printed circuit board (FPCB) 641-2. The rigid printed
circuit board 641-1 may include a passive element, a printed
circuit, and a sensor IC for controlling the biometric sensor. The
passive element, the printed circuit, and the sensor IC may be
disposed on, for example, a rear surface of the rigid printed
circuit board 641-1. The flexible printed circuit board 641-2 may
extend from one side of the rigid printed circuit board 641-1. The
flexible printed circuit board 641-2 (or a connecting part) may be
electrically connected with another printed circuit board (e.g.,
the printed circuit board 423 of FIG. 4A) in the state of being
attached to a display (e.g., the display 420 of FIG. 4A).
[0085] According to an embodiment, the housing 642 may be disposed
on a surface (e.g., an upper surface) of the printed circuit board
641. According to an embodiment, the housing 642 may include an
opening. At least an area (e.g., the entirety) of an upper surface
of the housing 642 may be open such that the housing 642 has
sidewalls surrounding the biometric sensor. For example, when
viewed from above the biometric sensor module 640, the housing 642
may have the shape of ".quadrature." that surrounds the biometric
sensor. In another example, when viewed from above the biometric
sensor module 640, the housing 642 may have the shape of ".OR
right." or "11" by which a portion of the periphery of the
biometric sensor is open. In the state in which the biometric
sensor module 640 is attached to the display (e.g., the display 420
of FIG. 4A), the biometric sensor may face one surface of the
display through the opening. The housing 642 may include, for
example, a polymer, such as epoxy, and/or metal, such as stainless
steel or aluminum.
[0086] According to an embodiment, the biometric sensor (e.g., the
image sensor 643, the optical layer 644, and the optical filter
layer 645) may be disposed on a surface (e.g., the upper surface)
of the printed circuit board 641. The biometric sensor may be
disposed inside the housing 642. For example, the biometric sensor
may be disposed inside the housing 642 through the opening of the
housing 642.
[0087] According to an embodiment, the image sensor (e.g., a CMOS
or a CCD) 643 may be disposed on a surface (e.g., the upper
surface) of the printed circuit board 641. The image sensor 643 may
be, for example, an array type image sensor having a plurality of
image sensors arranged at a specified interval. The image sensor
643 may obtain fingerprint information (or a fingerprint image) by
using reflective light reflected by a user's finger.
[0088] According to an embodiment, the optical layer 644 may be
disposed on the image sensor 643. For example, the optical layer
644 may improve an optical characteristic of reflective light
reflected by an external object (e.g., a finger) and may enhance
light receiving efficiency of the image sensor 643 by refracting
the reflective light.
[0089] According to an embodiment, the optical filter layer 645 may
be disposed on the optical layer 644. According to an embodiment,
the optical filter layer 645 may be disposed on at least an area of
the optical layer 644. The optical filter layer 645 may pass, for
example, only light (e.g., visible light) in a specific wavelength
range, which is reflected by an external object (e.g., a finger).
For example, to obtain fingerprint information, the optical filter
layer 645 may pass only light in a wavelength range required by the
image sensor 643 or light (e.g., green light) in a wavelength range
that easily passes through a hole formed in a panel layer (e.g.,
the panel layer 421 of FIG. 4) of the display. According to an
embodiment, the optical filter layer 645 may include a poly
ethylene terephthalate (PET) film.
[0090] According to an embodiment, the adhesive member 646 may be
disposed on a surface (e.g., the upper surface) of the housing 642.
The adhesive member 646 may be attached to a surface (e.g., a rear
surface) of the display to attach the biometric sensor module 640
to the display.
[0091] According to an embodiment, the conductive wire 647 may
electrically connect the printed circuit board 641 and the
biometric sensor (e.g., the image sensor 643). The conductive wire
647 may include, for example, a plurality of wires connecting the
printed circuit board 641 and the image sensor 643. Fingerprint
information obtained by the image sensor 643 may be transmitted to
the sensor IC, which is disposed on the printed circuit board 641,
through the conductive wire 647.
[0092] According to an embodiment, the magnetic screen layer 648
may be attached to a surface (e.g., a rear surface) of the printed
circuit board 641. The magnetic screen layer 648 may include, for
example, magnetic powder and/or metal powder. A sensor mounting
area may be formed in a layer (e.g., the layer 425 of FIG. 4A) of
the display. Accordingly, a hole may be formed in an area of a
digitizer included in the layer. The magnetic screen layer 648 may
compensate for a magnetic-field change caused by the hole formed in
the layer to prevent performance degradation of the digitizer. The
magnetic screen layer 648 may be omitted in the case where the
layer does not include the digitizer.
[0093] FIG. 7A is a sectional view illustrating an example
biometric sensor module according to an example embodiment of the
present disclosure.
[0094] Referring to FIG. 7A, a biometric sensor module 701 (e.g.,
the biometric sensor module 640 of FIG. 6) may include a printed
circuit board 741 (e.g., the printed circuit board 641), a housing
742 (e.g., the housing 642), an image sensor (or an image sensor
array) 743 (e.g., the image sensor 643), an optical layer 744
(e.g., the optical layer 644), an optical filter layer 745 (e.g.,
the optical filter layer 645), an adhesive member 746 (e.g., the
adhesive member 646), a conductive wire 747 (e.g., the conductive
wire 647), a magnetic screen layer 748 (e.g., the magnetic screen
layer 648), and a protective member 749.
[0095] According to an embodiment, the housing 742 and the image
sensor 743 may be disposed on the printed circuit board 741. For
example, the housing 742 and the image sensor 743 may be attached
to the printed circuit board 741 by a first adhesive film (e.g., a
die attach film (DAF)) 71.
[0096] According to an embodiment, the optical filter layer 745 may
be disposed on at least an area of the optical layer 744. For
example, the optical filter layer 745 may be attached to the
optical layer 744 by a second adhesive film 73 (e.g., an optically
clear adhesive (OCA) film, an optically clear resin (OCR) film, or
a die attach film (DAF)). The second adhesive film 73 may be
transparent to ensure an optical characteristic.
[0097] According to an embodiment, the protective member 749 may be
disposed in a space formed by the housing 742, a biometric sensor
(e.g., the image sensor 743, the optical layer 744, and the optical
filter layer 745), and the printed circuit board 741 to secure the
housing 742 and the biometric sensor. According to an embodiment,
the protective member 749 may surround the conductive wire 747 to
secure and protect the conductive wire 747 from the outside. The
conductive wire 747 may be completely separated from the outside by
the protective member 749. The protective member 749 may include,
for example, an epoxy resin or silicone.
[0098] According to an embodiment, the height hl from the printed
circuit board 741 to the adhesive member 746 may be greater than or
equal to the height h2 from the printed circuit board 741 to the
optical layer 744. Accordingly, the biometric sensor may be
separated from the outside in the state in which the biometric
sensor module 701 is attached to a display (e.g., the display 320
of FIG. 3).
[0099] FIG. 7B is a sectional view illustrating an example
biometric sensor module according to an example embodiment of the
present disclosure.
[0100] Referring to FIG. 7B, a biometric sensor module 703 (e.g.,
the biometric sensor module 640 of FIG. 6) may include the main
printed circuit board 741, a sub-printed circuit board 79, the
housing 742, the image sensor (or the image sensor array) 743, the
optical layer 744, the optical filter layer 745, the adhesive
member 746, the conductive wire 747, the magnetic screen layer 748,
and the protective member 749.
[0101] According to an embodiment, the sub-printed circuit board 79
may be disposed on the main printed circuit board 741. For example,
the sub-printed circuit board 79 may be attached to the main
printed circuit board 741 through at least one third adhesive
member 75. According to an embodiment, the third adhesive member 75
may include, for example, a conductive material and may
electrically connect the main printed circuit board 741 and the
sub-printed circuit board 79. For example, the third adhesive
member 75 may include conductive epoxy or solder.
[0102] According to an embodiment, the image sensor 743 may be
disposed on the sub-printed circuit board 79. For example, the
image sensor 743 may be attached to the sub-printed circuit board
79 through the first adhesive film 71 (e.g., a die attach film
(DAF)).
[0103] FIG. 8 is a diagram illustrating a portion of an example
package structure of a biometric sensor module according to an
example embodiment of the present disclosure.
[0104] In FIG. 8, diagram <81> illustrates a rear perspective
view of a first corner portion of a biometric sensor module (e.g.,
a biometric sensor) 840 (e.g., the biometric sensor module 640),
diagram <82> illustrates a rear view of the first corner
portion of the biometric sensor module 840, and diagram <83>
illustrates a rear view of a second corner portion of the biometric
sensor module 840.
[0105] Referring to FIG. 8, the biometric sensor module 840 may
include a printed circuit board 841 (e.g., the printed circuit
board 641), a housing 842 (e.g., the housing 642), an adhesive
member 846 (e.g., the adhesive member 646), and a magnetic screen
layer 848 (e.g., the magnetic screen layer 648). According to an
embodiment, an area of the housing 842 may protrude outside the
printed circuit board 841. For example, a corner of the printed
circuit board 841 may have an inwardly concave shape, and a corner
of the housing 842 may protrude outside the printed circuit board
841. According to another embodiment, the entire area of the
housing 842 may not protrude outside the printed circuit board
841.
[0106] Since the boundary of the corner of the printed circuit
board 841 is located inward of the boundary of the corner of the
housing 842, a second adhesive member (e.g., a second adhesive
member 92 of FIG. 9), when being applied, may flow down the corner
portion of the housing 842 and may be effectively applied to an
area between the biometric sensor module 840 and a display.
[0107] FIG. 9 is a sectional view illustrating an example
electronic device according to an example embodiment of the present
disclosure.
[0108] The sectional view illustrated in FIG. 9 corresponds to a
sectional view in the state in which a biometric sensor module 940
is attached to a display 920. Referring to FIG. 9, an electronic
device 901 (e.g., the electronic device 301 of FIG. 3) may include
a cover glass 910 (e.g., the cover glass 310 of FIG. 3), the
display (or the display panel) 920 (e.g., the display 320 of FIG.
3), a pressure sensor 930 (e.g., the pressure sensor 330 of FIG.
3), and the biometric sensor module 940 (e.g., the biometric sensor
module 340 of FIG. 3).
[0109] According to an embodiment, the biometric sensor module 940
may be attached to a rear surface of the display 920 after passing
through a sensor mounting area (e.g., the sensor mounting area 427
of FIG. 4A) formed in the display 920 and a sensor mounting area
(e.g., the sensor mounting area 431 of FIG. 4A) formed in the
pressure sensor 930. For example, a first adhesive member 946
(e.g., the adhesive member 646) of the biometric sensor module 940
may be attached to a surface (e.g., a rear surface) of a first
layer 925-1 (e.g., the first layer 425-1) of a layer 925 (e.g., the
layer 425). In the state in which the biometric sensor module 940
is attached to the display 920, a biometric sensor (e.g., an image
sensor 943 (e.g., the image sensor 643), an optical layer 944
(e.g., the optical layer 644), and an optical filter layer 945
(e.g., the optical filter layer 645)) may face a panel layer 921
(e.g., the panel layer 421). According to an embodiment, the
optical filter layer 945 may be spaced apart from the panel layer
921 by a specified distance h3 to ensure performance of the
biometric sensor module 940.
[0110] According to an embodiment, the electronic device 901 may
include the second adhesive member 92 for attaching the biometric
sensor module 940 to the display 920. The second adhesive member 92
may be inserted between an outer side of a housing 942 and an inner
side of the layer 925 to secure the biometric sensor module 940 to
the display 920. The adhesive force of the biometric sensor module
940 to the display 920 may be enhanced by doubly attaching the
biometric sensor module 940 to the display 920 through the first
adhesive member 946 and the second adhesive member 92. According to
an embodiment, the second adhesive member 92 may include a UV
adhesive, such as a UV ink or a UV curable resin, which is curable
by UV light.
[0111] In the embodiment described with reference to FIG. 9, the
biometric sensor module 940 has been described as being attached to
the display 920 through the first adhesive member 946. However, the
biometric sensor module 940 may be attached to the display 920 by a
pressing method without the first adhesive member 946, or may be
attached to the display 920 through an additional mechanical fixing
method (e.g., a screw, a fixing recess, a fixing member, or the
like).
[0112] FIGS. 10A and 10B are diagrams illustrating an example
process of manufacturing a biometric sensor, according to an
example embodiment of the present disclosure.
[0113] Referring to diagrams <1001> and <1002> of FIG.
10A, a biometric sensor module 1040 (e.g., the biometric sensor
module 640 of FIG. 6) may include a printed circuit board 1041
(e.g., the printed circuit board 641 of FIG. 6) and a housing 1042
(e.g., the housing 642 of FIG. 6). The housing 1042 may be disposed
on an upper surface of the printed circuit board 1041 and may
include an opening 1091. Referring to diagrams <1003> and
<1004> of FIG. 10A, a biometric sensor (e.g., an image sensor
1043 (e.g., the image sensor 643 of FIG. 6) and an optical layer
1044 (e.g., the optical layer 644 of FIG. 6)) may be disposed on
the upper surface of the printed circuit board 1041. For example,
the image sensor 1043 may be disposed on at least an area in the
opening 1091 of the housing 1042, and the optical layer 1044 may be
disposed on at least an area of the image sensor 1043. Referring to
diagrams <1005> and <1006> of FIG. 10A, the printed
circuit board 1041 and the image sensor 1043 may be electrically
connected using a conductive wire 1047 (e.g., the conductive wire
647 of FIG. 6) in the state in which the biometric sensor is
disposed on the printed circuit board 1041. The printed circuit
board 1041 and the image sensor 1043 may be electrically connected
through, for example, a plurality of conductive wires.
[0114] Referring to diagrams <1007> and <1008> of FIG.
10B, an optical filter layer 1045 (e.g., the optical filter layer
645 of FIG. 6) may be disposed on an upper surface of the optical
layer 1044. The optical filter layer 1045 may be disposed on at
least an area of the optical layer 1044. The optical filter layer
1045 may be attached to the optical layer 1044 through, for
example, an optically clear adhesive (OCA) film. Referring to
diagrams <1009> and <1010> of FIG. 10B, a protective
member 1049 (e.g., the protective member 749 of FIG. 7A) may be
disposed in a space formed by the housing 1042, the biometric
sensor (e.g., the image sensor 1043, the optical layer 1044, and
the optical filter layer 1045), and the printed circuit board 1041.
According to an embodiment, the protective member 1049 may be
formed to completely surround the conductive wire 1047 to separate
the conductive wire 1047 from the outside. According to an
embodiment, a magnetic screen layer 1048 (e.g., the magnetic screen
layer 648 of FIG. 6) may be attached to a rear surface of the
printed circuit board 1041. Referring to diagrams <1011> and
<1012> of FIG. 10B, an adhesive member 1046 may be disposed
on at least an area of the housing 1042. The biometric sensor
module 1040 may be attached to a rear surface of a display (e.g.,
the display 320 of FIG. 3) through the adhesive member 1046.
[0115] Electronic devices according to various example embodiments
disclosed herein may be various forms of devices. The electronic
devices may include at least one of, for example, a portable
communication device (e.g., a smartphone), a computer device (e.g.,
a personal digital assistant (PDA), a tablet personal computer
(PC), a laptop PC, a desktop PC, a workstation, or a server), a
portable multi-media device (e.g., an e-book reader or an MP3
player), a portable medical device (e.g., a heartbeat measuring
device, a blood glucose monitoring device, a blood pressure
measuring device, or a body temperature measuring device), a
camera, and a wearable device. The wearable device may include at
least one of an accessory type (e.g., a watch, a ring, bracelets,
anklets, a necklace, glasses, a contact lens, or a
head-mounted-device (HMD)), a fabric or garment-integrated type
(e.g., an electronic apparel), a body-attached type (e.g., a skin
pad or tattoos), and a bio-implantable type (e.g., an implantable
circuit). In some embodiments, the electronic devices may include
at least one of, for example, a television (TV), a digital
versatile disc (DVD) player, an audio device, an audio accessory
device (e.g., a speaker, headphones, or a headset), a refrigerator,
an air conditioner, a vacuum cleaner, an oven, a microwave oven, a
washing machine, an air cleaner, a set-top box, a home automation
control panel, a security control panel, a game console, an
electronic dictionary, an electronic key, a camcorder, and an
electronic picture frame, or the like, but are not limited
thereto.
[0116] In another embodiment, the electronic devices may include at
least one of a navigation device, a Global Navigation Satellite
System (GNSS), an event data recorder (EDR) (e.g., a black box for
a car, a ship, or a plane), a vehicle infotainment device (e.g., a
head-up display for a car), an industrial or home robot, a drone,
an automated teller machine (ATM), a point of sales (POS) device, a
measuring instrument (e.g., a water meter, an electricity meter, or
a gas meter) and internet of things (e.g., a light bulb, a
sprinkler device, a fire alarm, a thermostat, or a street lamp), or
the like, but are not limited thereto. The electronic devices
according to various embodiments of the present disclosure are not
limited to the above-described devices and may complexly provide
functions of a plurality of devices, similarly to a smartphone
having a function of measuring personal biometric information
(e.g., a heart rate or blood glucose). In this disclosure, the term
"user" may refer to a person who uses an electronic device or may
refer to a device (e.g., an artificial intelligence electronic
device) that uses the electronic device.
[0117] Various example embodiments of the present disclosure and
the terms used herein are not intended to limit the technology set
forth herein to specific embodiments, and those of ordinary skill
in the art will recognize that modifications, equivalents, and/or
alternatives on the various embodiments described herein can be
variously made without departing from the scope and spirit of the
present disclosure. With regard to description of drawings, similar
elements may be marked by similar reference numbers. The terms of a
singular form may include plural forms unless otherwise specified.
In this disclosure, the expressions "A or B", "at least one of A
and/or B", "A, B, or C", or "at least one of A, B, and/or C", and
the like may include any and all combinations of one or more of the
associated listed items. The terms, such as "first", "second", and
the like may be used to refer to various elements regardless of the
order and/or the priority and to distinguish the relevant elements
from other elements, but do not limit the elements. When an element
(e.g., a first element) is referred to as being "(operatively or
communicatively) coupled with/to" or "connected to" another element
(e.g., a second element), the element may be directly coupled
with/to or connected to the other element or an intervening element
(e.g., a third element) may be present.
[0118] According to the situation, the expression "adapted to or
configured to" used in this disclosure may be used interchangeably
with, for example, the expression "suitable for", "having the
capacity to", "adapted to", "made to", "capable of", or "designed
to" in hardware or software. The expression "a device configured
to" may refer to a situation in which the device is "capable of"
operating together with another device or other components. For
example, a "processor set to (or configured to) perform A, B, and
C" may refer, for example, and without limitation, to a dedicated
processor (e.g., an embedded processor) for performing
corresponding operations or a generic-purpose processor (e.g., a
central processing unit (CPU) or an application processor) that
performs corresponding operations by executing one or more programs
stored in a memory device (e.g., the memory 130).
[0119] The term "module" used in this disclosure may include a unit
configured with hardware, software, or firmware or any combinations
thereof, and may be used interchangeably with, for example, the
terms "logic", "logical block", "component" or "circuit". The
module may be an integrated component or may be a minimum unit for
performing one or more functions or a part thereof. For example,
the module may include, for example, and without limitation, a
dedicated processor, a CPU, an application-specific integrated
circuit (ASIC) or a field-programmable gate arrays (FPGAs), or the
like.
[0120] At least a part of devices or methods according to various
embodiments may be implemented with instructions stored in the form
of a program in a computer-readable storage medium (e.g., the
internal memory 136 or the external memory 138). The instructions,
when executed by a processor (e.g., the processor 120), may allow
the processor to perform functions corresponding to the
instructions directly or by using other elements under the control
of the processor. The instructions may include codes generated or
executed by a compiler or an interpreter.
[0121] Elements (e.g., modules or programs) according to various
embodiments may each be configured with a single entity or a
plurality of entities, and some of the above-described
corresponding sub-elements may be omitted, or other sub-elements
may be further included. Alternatively or additionally, some
elements (e.g., modules or programs) may be combined together to
form one entity, and the functions of the elements may be performed
in the same manner as before the combination. Operations performed
by modules, programs, or other elements according to various
embodiments may be executed sequentially, in parallel, repeatedly,
or in a heuristic method. In addition, some of the operations may
be executed in different sequences or may be omitted.
Alternatively, other operations may be added.
[0122] While the present disclosure has been illustrated and
described with reference to various example embodiments thereof, it
will be understood by those skilled in the art that various changes
in form and details may be made therein without departing from the
spirit and scope of the present disclosure as defined by the
appended claims and their equivalents.
* * * * *