U.S. patent application number 13/584767 was filed with the patent office on 2013-11-14 for touch display panel and fabricating method thereof.
This patent application is currently assigned to AU OPTRONICS CORPORATION. The applicant listed for this patent is Yu-Feng Chien, Hung-Wen Chou, Wen-Chi Chuang, Wen-Rei Guo, Po-Yuan Liu, Chia-Chun Yeh. Invention is credited to Yu-Feng Chien, Hung-Wen Chou, Wen-Chi Chuang, Wen-Rei Guo, Po-Yuan Liu, Chia-Chun Yeh.
Application Number | 20130300952 13/584767 |
Document ID | / |
Family ID | 47030070 |
Filed Date | 2013-11-14 |
United States Patent
Application |
20130300952 |
Kind Code |
A1 |
Yeh; Chia-Chun ; et
al. |
November 14, 2013 |
TOUCH DISPLAY PANEL AND FABRICATING METHOD THEREOF
Abstract
A touch display panel including an active device array
substrate, an opposite substrate and a liquid crystal layer is
provided. The active device array substrate includes a first
substrate, a black matrix, a touch-sensing device layer, a
dielectric layer and an active device array layer. The black matrix
is disposed on the first substrate. The touch-sensing device layer
is disposed on the first substrate to cover a portion of the black
matrix. The dielectric layer covers the touch-sensing device layer.
The active device array layer is disposed on the dielectric layer.
The touch-sensing device layer and the active device array
substrate are located at two opposite sides of the dielectric
layer. The liquid crystal layer is disposed between the active
device array layer and the opposite substrate. Moreover, a
fabricating method of the touch display panel is also provided.
Inventors: |
Yeh; Chia-Chun; (Taipei
City, TW) ; Chien; Yu-Feng; (New Taipei City, TW)
; Guo; Wen-Rei; (Miaoli County, TW) ; Chou;
Hung-Wen; (Taoyuan County, TW) ; Chuang; Wen-Chi;
(New Taipei City, TW) ; Liu; Po-Yuan; (Hsinchu
City, TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Yeh; Chia-Chun
Chien; Yu-Feng
Guo; Wen-Rei
Chou; Hung-Wen
Chuang; Wen-Chi
Liu; Po-Yuan |
Taipei City
New Taipei City
Miaoli County
Taoyuan County
New Taipei City
Hsinchu City |
|
TW
TW
TW
TW
TW
TW |
|
|
Assignee: |
AU OPTRONICS CORPORATION
Hsinchu
TW
|
Family ID: |
47030070 |
Appl. No.: |
13/584767 |
Filed: |
August 13, 2012 |
Current U.S.
Class: |
349/12 ;
257/E33.012; 438/30 |
Current CPC
Class: |
G06F 3/0446 20190501;
G06F 3/0445 20190501; G02F 1/133345 20130101; G02F 1/133514
20130101; G02F 1/133512 20130101; G02F 1/13338 20130101; G06F
3/0412 20130101; G06F 2203/04103 20130101; G02F 1/136209
20130101 |
Class at
Publication: |
349/12 ; 438/30;
257/E33.012 |
International
Class: |
G02F 1/1335 20060101
G02F001/1335; H01L 33/08 20100101 H01L033/08 |
Foreign Application Data
Date |
Code |
Application Number |
May 11, 2012 |
TW |
101116908 |
Claims
1. A touch display panel, comprising: an active device array
substrate, comprising: a first substrate; a black matrix, disposed
on the first substrate; a touch-sensing device layer, disposed on
the first substrate to cover a portion of the black matrix; a
dielectric layer, covering the touch-sensing device layer; an
active device array layer, disposed on the dielectric layer, the
touch-sensing device layer and the active device array layer are
located at two opposite sides of the dielectric layer; an opposite
substrate; and a liquid crystal layer, disposed between the active
device array layer and the opposite substrate.
2. The touch display panel as claimed in claim 1, wherein the
opposite substrate comprises: a second substrate; a color filter
layer, disposed on the second substrate; and a common electrode,
disposed over the color filter layer, wherein the common electrode
and the second substrate are located at the two opposite sides of
the color filter layer.
3. The touch display panel as claimed in claim 1, wherein the
active device array layer comprises a plurality of pixels arranged
in an array, a plurality of scan lines and a plurality of data
lines, each of the pixels is electrically connected to the
corresponding scan lines and the data lines respectively, and the
black matrix comprises a mesh pattern and a frame pattern, the
frame pattern surrounds the mesh pattern, and the mesh pattern is
distributed corresponding to the scan lines and the data lines.
4. The touch display panel as claimed in claim 1, further
comprising a display driving circuit disposed on the black
matrix.
5. The touch display panel as claimed in claim 1, further
comprising a backlight module disposed at one side of the opposite
substrate, wherein the backlight module and the active device array
substrate are located at the two opposite sides of the opposite
substrate.
6. A fabricating method of touch display panel, comprising:
sequentially forming a black matrix, a touch-sensing device layer,
a dielectric layer, and an active device array layer over a first
substrate to form an active device array substrate; bonding the
active device array substrate with an opposite substrate; and
forming a liquid crystal layer between the active device array
layer and the opposite substrate.
7. The fabricating method of the touch display panel as claimed in
claim 6, wherein the fabricating method of the opposite substrate
comprises: sequentially forming a color filter layer and a common
electrode over a second substrate.
8. The fabricating method of the touch display panel as claimed in
claim 6, wherein the fabricating method of the active device array
layer comprises: forming a plurality of pixels arranged in array, a
plurality of scan lines, and a plurality of data lines over the
dielectric layer, each of the pixels being electrically connected
with the corresponding scan lines and the data lines respectively,
wherein the black matrix comprises a mesh pattern and a frame
pattern, the frame pattern surrounds the mesh pattern, and the mesh
pattern is distributed corresponding to the scan lines and the data
lines.
9. The fabricating method of the touch display panel as claimed in
claim 6, further comprising: providing a display driving circuit
disposed on the black matrix.
10. The fabricating method of the touch display panel as claimed in
claim 6, further comprising: providing a backlight module disposed
at one side of the opposite substrate, the backlight module and the
active device array substrate being located at the two opposite
sides of the opposite substrate.
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application claims the priority benefit of Taiwan
application serial no. 101116908, filed on May 11, 2012. The
entirety of the above-mentioned patent application is hereby
incorporated by reference herein and made a part of this
specification.
BACKGROUND OF THE DISCLOSURE
[0002] 1. Technical Field
[0003] The disclosure is related to a touch display panel and a
fabricating method thereof, and more particularly to an in-cell
type touch display panel and the fabricating method thereof.
[0004] 2. Description of Related Art
[0005] Along with the daily advancement of the display technology,
people's life is made more convenient through the aid of the
display. With the demands for lightweight and thin characteristics
of the display, the flat panel display (FPD) has become the
mainstream of present days. In the recent years, various electronic
products characterized in simple operation, small volume and large
screen size are developed, and particularly the demands of the
small volume and large screen size for the portable electronic
products are stricter. Therefore, many electronic products
integrate the touch interface together with the display panel to
save the space required by the keyboard or buttons, resulting in
greater screen size.
[0006] The touch display panel can be categorized into resistance
touch display panels, capacitive touch display panels, optical
touch display panels, surface acoustic wave touch display panels,
and electromagnetic touch display panel according to the
differences in their sensing methods. The capacitive type touch
display panel has quick response time, reliable, durable, and other
advantages, therefore, the capacitive touch display panels are
widely adapted to the electronic products. According to the
different structure and fabricating method, the touch display panel
can also be categorized into added-on, on-cell/in-cell, and one
glass solution (OGS).
[0007] FIG. 1 is a diagram of fabricating method of the
conventional touch display panel. Referring to FIG. 1, the touch
display panel includes a liquid crystal display module 10 and a
touch panel 20. The liquid crystal display module 10 includes a
color filter substrate 1, an active device array substrate 2, and a
backlight module 3. In general, a frame 4 may be used to integrate
the color filter substrate 1, the active device array substrate 2,
and a backlight module 3 to form the liquid crystal display module
10. Conventionally, an active device array layer and an outer lead
bonding area are fabricated on the active device array substrate 2,
wherein the outer lead bonding area is configured to connect a
display driving circuit 5. The frame 4 surrounds the display
driving circuit 5. The display driving circuit 5 is a chip, and
causes the liquid crystal display module 10 to have an uneven
surface after the display driving circuit 5 is mounted on the outer
lead bonding area of the active device array substrate 2, shown by
the dotted line P in FIG. 1. As a result, when the touch panel 20
is attached to the liquid crystal display module 10, the difficulty
of the attaching fabrication process increases due to the uneven
surface of the liquid crystal module 10. Moreover, the touch
display panel 20 has protection cover that is disposed at the
outermost layer, and configured to protect the touch-sensing layer.
Accordingly, additional fabrication process step is required to
attach the protection cover, thus likely to affect the yield of the
fabrication process.
SUMMARY OF THE DISCLOSURE
[0008] The disclosure provides a touch display panel and a
fabricating method thereof. In the touch display, a touch-sensing
device layer and an active device array layer are integrated on the
same substrate.
[0009] The disclosure provides a touch display panel including an
active device array substrate, an opposite substrate, and a liquid
crystal layer. The active device substrate includes a first
substrate, a black matrix, a touch-sensing device layer, a
dielectric layer, and an active device array layer. The black
matrix is disposed on the first substrate. The touch-sensing device
layer is disposed on the first substrate to cover a portion of the
black matrix. The dielectric layer covers the touch-sensing device
layer. The active device array layer is disposed on the dielectric
layer. The touch-sensing device layer and the active device array
layer are located at two opposite sides of the dielectric layer.
The liquid crystal layer is disposed between the active device
array layer and the opposite substrate.
[0010] According to an embodiment of the disclosure, the opposite
substrate includes a second substrate, a color filter layer, and a
common electrode, wherein the color filter layer is disposed on the
second substrate, the common electrode is disposed over the color
filter layer, and the common electrode and the second substrate are
located at two opposite sides of the color filter layer.
[0011] According to an embodiment of the disclosure, the active
device array layer includes a plurality of pixels arranged in an
array, a plurality of scan lines, and a plurality of data lines.
Each of the pixels is electrically connected to the corresponding
scan lines and data lines respectively, wherein the black matrix
includes a mesh pattern and a frame pattern, the frame pattern
surrounds the mesh pattern, and the mesh pattern is distributed
corresponding to the scan lines and the data lines.
[0012] According to an embodiment of the disclosure, the touch
display panel further includes a display driving circuit, and the
display driving circuit is disposed on the black matrix.
[0013] According to an embodiment of the disclosure, the touch
display panel further includes a backlight module, wherein the
backlight module is disposed at one side of the opposite substrate,
and the backlight module and the active device array substrate are
located at the two opposite sides of the opposite substrate.
[0014] A fabricating process of a display touch panel provided by
the disclosure, which includes the following steps, forming a black
matrix, a touch-sensing device layer, a dielectric layer, and an
active device array layer sequentially on a first substrate to form
an active device array substrate. The active device array substrate
is bonded to an opposite substrate. And, a liquid crystal layer is
formed between the active device array layer and the opposite
substrate.
[0015] According to an embodiment of the disclosure, the
fabricating method of the opposite substrate includes, forming a
color filter layer and a common electrode sequentially over a
second substrate.
[0016] According to an embodiment of the disclosure, the
fabricating method of the active device array layer includes,
forming a plurality of pixels arranged in an array, a plurality of
scan lines, and a plurality of data lines on the dielectric layer,
wherein each of the pixels is electrically connected to the
corresponding scan lines and the data lines respectively. The black
matrix includes a mesh pattern and a frame pattern, the frame
pattern surrounds the mesh pattern, and the mesh pattern is
distributed corresponding to the scan lines and the data lines.
[0017] According to an embodiment of the disclosure, the
fabricating method of the touch display panel further includes,
providing a display driving circuit, and the display driving
circuit is disposed on the black matrix.
[0018] According to an embodiment of the disclosure, the
fabricating method of the touch display panel further includes,
providing a backlight module, and the backlight module is disposed
at one side of the opposite substrate, so the backlight module and
the active device array substrate are located at two opposite sides
of the opposite.
[0019] Base on the above, the disclosure integrates the
touch-sensing device layer, black matrix, and the active device
array layer on the same substrate to further reduce the thickness
and weight of the touch display panel.
[0020] In order to make the aforementioned and other features and
advantages of the invention comprehensible, several exemplary
implementations accompanied with figures are described in detail
below.
BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The accompanying drawings are included to provide further
understanding, and are incorporated in and constitute a part of
this specification. The drawings illustrate exemplary embodiments
and, together with the description, serve to explain the principles
of the disclosure.
[0022] FIG. 1 is a schematic diagram of a fabricating method of a
touch display panel according to the conventional technology.
[0023] FIG. 2 to FIG. 5 are schematic diagrams of a fabricating
method of a touch display panel according to a first embodiment of
the invention.
[0024] FIG. 6 is a schematic top view of an active device array
substrate according to the first embodiment of the invention.
[0025] FIG. 7 to FIG. 8 are schematic diagrams of fabricating
process of the touch display panel according to a first embodiment
of the invention.
[0026] FIG. 9 is a schematic diagram of fabricating method of the
touch display panel according to a second embodiment of the
invention.
DETAILED DESCRIPTION OF DISCLOSED EMBODIMENTS
The First Embodiment
[0027] FIG. 2 to FIG. 5 are schematic diagrams of a fabricating
method of a touch display panel according to a first embodiment of
the invention, FIG. 6 is a schematic top view of an active device
array substrate according to the first embodiment of the invention,
wherein the FIG. 5 is schematic cross-sectional view of FIG. 6
along a profile line I-I'. In FIG. 6, some films are omitted.
[0028] Referring to FIG. 2, a first substrate 102 is provided. The
first substrate 102 is mainly configured to carry devices or films.
The first substrate 102 may be made of glass, quartz, an organic
polymer, or other appropriate translucent materials, for example.
In the present embodiment, the first substrate 102 also acts as a
cover plate with protecting function. The first substrate 102
configured to carry devices and acting as a cover plate can save
costs during fabrication and reduce the thickness of the touch
display panel.
[0029] Then, a black matrix 104 is formed on the first substrate
102. The black matrix 104 includes a mesh pattern 104a and a frame
pattern 104b, wherein the frame pattern 104b surrounds the mesh
pattern 104a.
[0030] Then, a circuit layer 105 is formed on the frame pattern
104b of the black matrix 104. The material of the circuit layer 105
may be, for example, metal materials, an alloy, metal nitride,
metal oxide, metal oxynitride, or other appropriate materials. In
an alternative embodiment, the circuit layer 105 may be a stacked
structure of a metal layer and other conductive layer.
[0031] Referring to FIG. 3, a touch-sensing device layer 106 is
formed. The touch-sensing device layer covers a portion of the
black matrix 104. The fabricating method of the touch-sensing
device layer 106 is to form a plurality of first sensing series
106a on the first substrate 102 first. The first sensing series
106a cover a portion of the circuit layer 105, and are electrically
connected to the circuit layer 105. Then, an insulation layer 106b
is formed on the first sensing series 106a. Next, a plurality of
second sensing series 106c are formed on the insulation layer 106b.
The first sensing series 106a and the second sensing series 106c
are interlaced to each other; wherein the insulation layer 106b may
be configured to electrically insulate the first sensing series
106a from the second sensing series 106c.
[0032] Then, a touch-sensing driving circuit 122 is disposed on the
circuit layer 105. The sensing driving circuit 122 is electrically
connected with touch-sensing device layer 106 though the circuit
layer 105. According to the present embodiment, the first sensing
series 106a and the second sensing series 106c may be configured to
detect a position that is touched by a user, and transmit the
sensing signal to the touch-sensing driving circuit 122.
[0033] Referring to FIG. 4, a dielectric layer 108 is formed on the
touch-sensing device layer 106. The dielectric layer 108 may be
made of, for example, organic materials, silicon based materials,
or other materials with low dielectric constants. The dielectric
layer 108 is composed of materials with low dielectric constant,
hence the signal interference problem can be improved.
[0034] Referring to FIG. 5, an active device array layer 110 is
formed on the dielectric layer 108. At this time, the fabrication
of the active device array substrate 100 is completed. Referring to
the FIG. 5 and FIG. 6, the fabricating method of the active device
array layer 110 is to form a plurality of pixels 112 arranged in an
array, a plurality of scan lines 114, and a plurality of data lines
116 on the dielectric layer 108 first. Each of the pixels 112
includes at least one active device 112a and a pixel electrode
112b. The active device 112a may be a bottom gate thin film
transistor or a top gate thin film transistor, which includes a
gate, a channel, a source, and a drain. Each of the pixels 112 is
electrically connected to the corresponding scan lines 114 and the
data lines 116 through the active device 112a.
[0035] Base on the description above, the scan line 114 and the
data line 116 are made of metal materials, for example. However,
the embodiment of the invention is not limited thereto. According
to other exemplary embodiments, the scan lines and the data lines
may be made of other conductive materials, such as alloys, metal
nitride, metal oxide, metal oxynitride, or other appropriate
materials. In an alternative embodiment, the scan lines and the
data lines may be a stacked structure of a metal layer and other
conductive layer.
[0036] It should be noted that the scan lines 114 and the data
lines 116 have possibilities of reflecting light, therefore the
mesh pattern 104a of the black matrix 104 is distributed
corresponding to the scan line 114 and the data line 116, and to
cover the scan line 114 and the data line 116. For example, the
vertical projection pattern of the mesh pattern 104a on the first
substrate 102 physically overlaps the vertical projection of the
scan lines 114 and the data lines 116 on the first substrate 102.
Preferably, the vertical projection of the mesh pattern 104a on the
first substrate 102 is slightly greater than the vertical
projection pattern of the scan lines and data lines 116 on the
first substrate 102. The width of the mesh pattern 104a, for
example, substantially equals to the widths of the scan lines 114
and the data lines 116, or the width of the mesh pattern 104a, for
example, is slighter greater than the widths of the scan lines 114
and data lines 116. In other words, the principle is for the width
of the mesh pattern 104a to be able to cover the width of the scan
lines 114 and the data lines 116. As a result, the black matrix 104
is able to cover the reflection caused by the scan lines 114 and
the data lines 116.
[0037] Then, a display driving circuit 124 is disposed on the black
matrix 104, which is disposed on the first substrate 102, wherein
the display driving circuit 124 may electrically connected with the
scan lines 114 and/or the data lines 116 of the active device array
layer 110. In the present embodiment, the display driving circuit
124 is disposed on the first substrate 102, and the touch-sensing
device layer 106 and the dielectric layer 108 are not between the
display driving circuit 124 and the first substrate 102. However,
the embodiment of the invention is not limited thereto. The
touch-sensing driving circuit 122 is disposed on the first
substrate 102, and the black matrix 104 and the circuit layer 105
is between the touch-sensing driving circuit 122 and the first
substrate 102. In the present embodiment, the touch-sensing driving
circuit 122 and the display driving circuit 124 constitutes a
control circuit 120. For example, the touch-sensing driving circuit
122 and the display driving circuit 124 may be integrated in a
single chip, or fabricated in different chips respectively. When
the touch-sensing driving circuit 122 and the display driving
circuit 124 are integrated in a single chip, the single chip
functions as the aforementioned control circuit 120. When the
touch-sensing driving circuit 122 and the display driving circuit
124 are fabricated in different chips respectively, the chips
functions as the aforementioned control circuit 120.
[0038] FIG. 7 and FIG. 8 are schematic diagrams of fabrication
process of touch display panel according to the first embodiment of
the invention. Referring to FIG. 7, a second substrate 202 is
provided. The second substrate 202 is mainly configured to carry
devices or films, which may be made of glass, quartz, an organic
polymer, or other appropriate translucent materials,
opaque/reflective materials (i.e. a conductive materials, metal,
wafer, ceramic, or other appropriate materials), or other
appropriate materials.
[0039] Then, a color filter layer 204 is formed on the second
substrate 202. The color filter layer 204 may include a plurality
of color filter patterns. The color filter patterns include a first
color filter pattern, a second color filter pattern, and a third
color filter pattern, for example. The color filter patterns are
arranged in an array. The color filter layer 204 may be formed by
printing, for example. In general, the color filter layer 204 may
further include the black matrix disposed between the color filter
patterns. Nevertheless, in the present embodiment, the black matrix
104 is disposed on the active device array substrate 100.
Therefore, the black matrix 104 is not required to be disposed
between every color filter patterns.
[0040] Base on the above description, in the color filter layer 204
of the present embodiment, each of the color filter patterns are
disposed with space between each other. However, the embodiment of
invention is not limited thereto. In other embodiment, each of the
color filter patterns may be disposed consecutively without space
between each other. The transition region of each color filter
patterns may be covered by the black matrix 104 on the first
substrate 102.
[0041] Then, a protection layer 206 is formed on the color filter
layer 204. For example, the protection layer 206 covers the second
substrate 202 and the color filter layer 204 entirely. The material
of the protection layer 206, for example, include inorganic
dielectric materials (such as silicon oxide, silicon nitride,
silicon oxynitride, or other appropriate inorganic dielectric
materials), or organic dielectric materials.
[0042] Then, a common electrode 208 is formed over the protection
layer 206. The common electrode 208 covers the color filter layer
204. Furthermore, the common electrode 208 is, for example, a
transparent conductive material. The transparent conductive
material is, for example, indium tin oxide, indium zinc oxide, or
other appropriate transparent conductive materials. At this time,
the fabrication of an opposite substrate 200 of touch display panel
1000 is completed.
[0043] Referring to FIG. 8, the active device array substrate 100
is bonded with the opposite substrate 200. In detail, a sealant S
and a liquid crystal layer 300 are provided between the active
device array substrate 100 and the opposite substrate 200.
Afterward, the active device array substrate 100 and the opposite
substrate 200 are bonded with each other. According to the present
embodiment, the orientation of the liquid crystal layer 300 may be,
for example, in plane switching (IPS) type, twisted nematic (TN)
type, and vertical alignment (VA) type.
[0044] Afterward, a backlight module 400 is provided, wherein the
backlight module 400 is disposed at one side of the opposite
substrate 200, and the backlight module 400 and the active device
array substrate 100 are located at two opposite sides of the
opposite substrate 200, respectively. The backlight module 400 may
be configured to provide light for display, the backlight module
400 may be, for example, an edge type backlight module or a direct
type backlight module.
[0045] It should be noted that the touch-sensing driving circuit
122 and the display driving circuit 124 are disposed on the black
matrix 104 in the present embodiment, and the touch-sensing device
layer 106, the black matrix 104, and the active device array layer
110 are disposed over the substrate 102 and located at one surface
of the substrate 102 such that the touch-sensing device layer 106,
the black matrix 104, and the active device array layer 110 are
sandwiched between the substrate 102 and the opposite substrate
200. Therefore, when the active device array substrate 100 and the
opposite substrate 200 are integrated, a complex frame is not
required to be designed to surround the display driving circuit
124. In other words, the touch display panel 1000 is able to have
an even surface.
[0046] Furthermore, the touch-sensing device layer 106 and the
active device array substrate 110 are disposed on the same
substrate simultaneously in the present embodiment. Therefore, in
the fabricating method of the touch display panel in the present
embodiment, the attaching process is omitted, and issues or
problems generated from the attaching process are prevented.
Accordingly, the fabricating method of the touch display panel in
the present embodiment improves the yield of the fabrication for
the touch display panel.
[0047] After the touch-sensing driving circuit 122 and the display
driving circuit 124 are formed, the fabrication of the touch
display panel 1000 is completed.
[0048] FIG. 8 is illustrated to explain the structure of the touch
display panel 1000 in detail.
[0049] As showing in FIG. 8, the touch display panel 1000 includes
the active device array substrate 100, the opposite substrate 200,
and the liquid crystal layer 300. The active device array substrate
100 includes the first substrate 102, the black matrix 104, the
touch-sensing device layer 106, the dielectric layer 108, and the
active device array layer 110.
[0050] The black matrix 104 is disposed over the first substrate
102. The black matrix 104 includes a mesh pattern 104a and a frame
pattern 104b, wherein the frame pattern 104b surrounds the mesh
pattern 104a.
[0051] The touch-sensing device layer 106 is disposed on the first
substrate 102, which covers a portion of the black matrix 104. In
detail, the touch-sensing device layer 106 physically covers the
mesh patterns 104a of the black matrix 104 entirely. According to
the present embodiment, the touch-sensing device layer 106 includes
the first sensing series 106a, the second sensing series 106c, and
the dielectric layer 106b, the dielectric layer 106b is disposed
between the first sensing series 106a and the second sensing series
106c, and the first sensing array 106a is interlaced with the
second sensing array 106c, as showing in FIG. 6.
[0052] The dielectric layer 108 covers the touch-sensing device
layer 106, and the active device array layer 110 is disposed on the
dielectric layer 108, wherein the touch-sensing device layer 106
and the active device array 110 are located at the two opposite
sides of the dielectric layer. It should be noted that the
dielectric layer 108 is disposed between the touch-sensing device
layer 106 and the active device array layer 110, and the dielectric
layer 108 may be made of materials with low dielectric constants.
Therefore, the dielectric layer 108 may be utilized to reduce the
noise interferences generated between the touch-sensing device
layer 106 and the active device array layer 110. In addition, the
dielectric layer 108 may provide an even surface to facilitate the
fabrication process of films that are formed subsequently.
[0053] The active device array layer 110 includes a plurality of
pixels 112 arranged in array, a plurality of scan lines 114, and a
plurality of data lines 116, wherein each of the pixels 112 is
electrically connected with the corresponding scan lines 114 and
the data lines 116 respectively, as shown in FIG. 6. According to
the present embodiment, the pixels 112 includes an active device
112a and a pixel electrode 112b, wherein the active device 112a is
electrically connected to the corresponding scan lines 114 and the
data lines 116.
[0054] The opposite substrate 200 includes the second substrate
202, the color filter layer 204, the protection layer 206, and the
common electrode 208.
[0055] The color filter layer 204 is disposed on the second
substrate 202. The color filter layer 204 includes a plurality of
color filter patterns, and the black matrix can be optionally
formed over the second substrate 202, wherein the color filter
patterns are arranged in array. According to the present
embodiment, the color filter patterns may distribute corresponding
to the pixels 112 of the active device array substrate 110. In
detail, each of the color filter patterns is distributed
corresponding to one of the pixels 112, respectively.
[0056] The protection layer 206 covers the color filter layer 204.
The protection layer 206 may be configured to protect the color
filter layer 204 from damages caused by the following fabrication
process. Furthermore, the protection layer 206 may provide an even
interface to facilitate the fabrication process of films that are
formed subsequently.
[0057] The common electrode 206 is disposed over the color filter
layer 204, wherein the common electrode 206 and the second
substrate 202 are located at two opposite sides of the color filter
layer 204. The common electrode 206 and the pixel electrode 112b of
the active device array layer 110 may be configured to provide
electric field to drive the liquid crystal layer 300, and thus the
required image is displayed on the touch display panel 1000.
[0058] Furthermore, the touch display panel 1000 in the present
embodiment further includes the backlight module 400. The backlight
module 400 is disposed at one side of the opposite substrate 200.
In other words, the light emitted from the backlight module 400
transmits the opposite substrate 200 and the active device array
substrate 100 sequentially and an image is generated and viewed by
users' eyes. Since the active device array layer 110 is disposed on
the first substrate 102 which is used as a carrying substrate and a
covering substrate simultaneously, and the display driving circuit
124 is disposed on the active device array substrate 100, the frame
of the present embodiment that is configured to integrate the
active device array substrate 100 and the opposite substrate 200
together may have an even surface.
[0059] In the present embodiment, the scan lines 114 and the data
lines 116 may cause light reflection. In order to cover the scan
lines 114 and the data lines 116, the black matrix 104 is disposed
on the active device array substrate 100 rather than the color
filter layer 204, and the black matrix 104 is distributed
corresponding to the scan lines 114 and the data lines 116. For
example, the width of the mesh pattern 104a equals to the widths of
the scan lines 114 and the data lines 116 physically, or the width
of the mesh pattern 104a is slightly greater than the widths of the
scan lines 114 and the data lines 116. In other words, the
principle is for the width of the mesh pattern 104a to be able to
cover the width of the scan lines 114 and the data lines 116.
The Second Exemplary Embodiment
[0060] FIG. 9 is a diagram of fabrication process for the touch
display panel. Referring to FIG. 9, in the present embodiment, a
first polarizer 101 is attached on the first substrate 102 and a
second polarizer 201 is attached on the second substrate 200. At
this time, the fabrication of another type of touch display panel
1000' is completed.
[0061] FIG. 9 is illustrated to explain the structure of the touch
display panel 1000' in detail.
[0062] Referring to FIG. 9, the structure of the touch display
panel 1000' is similar to the touch display panel 1000 in the FIG.
8 except that the touch display panel 1000' further includes the
first polarizer 101 and the second polarizer 201. The first
polarizer 101 and the second polarizer 201 are disposed on the
first substrate 102 and the opposite substrate 200 respectively,
wherein the first polarizer 101 and the black matrix 104 are
located at the two opposite sides of the first substrate 102, and
the second polarizer 201 and the liquid crystal layer 300 are
located at the two opposite sides of the substrate 200. In the
present embodiment, the area of the first polarizer 101 is greater
than the area of the second polarizer 201. Furthermore, the area of
the first substrate 102 is greater than the area of the second
substrate 202, which enables the first substrate 102 to have an
adequate area to carry the touch-sensing driving circuit 122 and
display driving circuit 124. However, the embodiment of the
invention is not limited thereto.
[0063] In summary, the present disclosure disposes the
touch-sensing device layer, the black matrix, and the active device
array layer on the first substrate which is used as a covering
plate and a carrying substrate. Therefore, the thickness and weight
of the touch display panel are reduced, and the touch display has
an even surface. In addition, the disclosure integrates the
touch-sensing device layer and the active device array on the same
substrate, hence the attaching process is reduced, and issues or
problems generated from the attaching process are prevented.
Accordingly, the fabricating method of the touch display panel in
the present embodiment improves the yield of the fabrication for
the touch display panel comparing to the conventional technology.
Furthermore, the mesh pattern of the black matrix correspond to the
distribution of the scan lines and the data lines of the active
device array layer, which is able to cover the reflection caused by
the scan lines and the data lines to ensure the display quality of
the touch display panel.
[0064] Although the present invention has been described with
reference to the above embodiments, it will be apparent to one of
the ordinary skill in the art that modifications to the described
embodiment may be made without departing from the spirit of the
invention. Accordingly, the scope of the invention will be defined
by the attached claims not by the above detailed descriptions.
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