U.S. patent application number 16/692415 was filed with the patent office on 2021-05-20 for pixel display module and mask for manufacturing the pixel display module.
This patent application is currently assigned to KunShan Go-Visionox Opto-Electronics Co., Ltd.. The applicant listed for this patent is KunShan Go-Visionox Opto-Electronics Co., Ltd.. Invention is credited to Shuaiyan GAN, Feng GAO, Junfeng LI, Mingxing LIU, Dongyun LV, Xuliang WANG.
Application Number | 20210151520 16/692415 |
Document ID | / |
Family ID | 1000005565035 |
Filed Date | 2021-05-20 |
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United States Patent
Application |
20210151520 |
Kind Code |
A9 |
LIU; Mingxing ; et
al. |
May 20, 2021 |
PIXEL DISPLAY MODULE AND MASK FOR MANUFACTURING THE PIXEL DISPLAY
MODULE
Abstract
The embodiments of the present application provide a pixel
display module. The pixel display module includes: a plurality of
array-distributed pixel unit groups. Each of the pixel unit groups
comprises four array-distributed sub-pixels, two of the sub-pixels
located on a diagonal of each of the pixel unit groups emit a same
first color light, and the other two of sub-pixels located on
another diagonal of each of the pixel unit groups respectively emit
a second color light and a third color light. Two pixel unit groups
adjacent in a first direction are staggered along a second
direction, and the second direction is perpendicular to the first
direction.
Inventors: |
LIU; Mingxing; (Kunshan,
CN) ; LI; Junfeng; (Kunshan, CN) ; WANG;
Xuliang; (Kunshan, CN) ; LV; Dongyun;
(Kunshan, CN) ; GAN; Shuaiyan; (Kunshan, CN)
; GAO; Feng; (Kunshan, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
KunShan Go-Visionox Opto-Electronics Co., Ltd. |
Kunshan |
|
CN |
|
|
Assignee: |
KunShan Go-Visionox
Opto-Electronics Co., Ltd.
Kunshan
CN
|
Prior
Publication: |
|
Document Identifier |
Publication Date |
|
US 20200185463 A1 |
June 11, 2020 |
|
|
Family ID: |
1000005565035 |
Appl. No.: |
16/692415 |
Filed: |
November 22, 2019 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
PCT/CN2019/088556 |
May 27, 2019 |
|
|
|
16692415 |
|
|
|
|
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H01L 51/56 20130101;
H01L 27/3218 20130101 |
International
Class: |
H01L 27/32 20060101
H01L027/32; H01L 51/56 20060101 H01L051/56 |
Foreign Application Data
Date |
Code |
Application Number |
Jun 27, 2018 |
CN |
201810679353.7 |
Claims
1. A pixel display module, comprising: a plurality of
array-distributed pixel unit groups; wherein each of the pixel unit
groups comprises four array-distributed sub-pixels, two of the
sub-pixels located on a diagonal of each of the pixel unit groups
emit a same first color light, and the other two of sub-pixels
located on another diagonal of each of the pixel unit groups
respectively emit a second color light and a third color light; two
pixel unit groups adjacent with each other in a first direction are
staggered a certain distance along a second direction perpendicular
to the first direction.
2. The pixel display module of claim 1, wherein the certain
distance is equal to a length of one sub-pixel along the second
direction.
3. The pixel display module of claim 2, wherein the sub-pixels in
the two pixel unit groups staggered along the second direction
respectively comprise one selected sub-pixel, the two selected
sub-pixels are adjacent to each other located in a same column or
in a same row and emit a same color light.
4. The pixel display module of claim 3, wherein the two selected
sub-pixels emit the first color light.
5. The pixel display module of claim 4, wherein the first color
light is green light.
6. The pixel display module of claim 1, wherein, the first color
light is green light, and the second color light and the third
color light are respectively red light and blue light; or, the
first color light is blue light, and the second color light and the
third color light are respectively red light and green light; or,
the first color light is red light, and the second color light and
the third color light are respectively green light and blue
light.
7. The pixel display module of claim 5, wherein a shape of the
pixel unit group is rectangular.
8. The pixel display module of claim 7, wherein shapes of the four
sub-pixels in the pixel unit group are square.
9. The pixel display module of claim 1, wherein each of the pixel
unit groups comprises a first pixel unit and a second pixel unit,
the first pixel unit or the second pixel unit is composed of three
sub-pixels emitting different color lights, and when the pixel unit
group emits light, the first pixel unit and the second pixel unit
share two of the three sub-pixels, on a diagonal of the pixel unit
group and respectively emit the second color light and the third
color light.
10. The pixel display module of claim 9, wherein in each of the
pixel unit groups, a distance between two of the three sub-pixels
in a column direction is twice a distance between two of the
sub-pixels in a row direction.
11. A mask for manufacturing the pixel display module, comprising:
a plurality of open areas, wherein at least one open area
corresponds to two of the sub-pixels of the two adjacent pixel unit
groups, are adjacent to each other, are located in a same row or in
a same column and emit the same color light.
Description
CROSS-REFERENCE TO ASSOCIATED APPLICATIONS
[0001] This application is a Continuation-In-Part application of
PCT application No. PCT/CN2019/088556, filed on May 27, 2019 which
claims priority to CN Patent Application No. 201810679353.7, filed
on Jun. 27, 2018. All of the aforementioned applications are hereby
incorporated by reference in their entireties.
TECHNICAL FIELD
[0002] Embodiments of the present application relate to the field
of display technology, and particularly to a pixel display module
and a mask for manufacturing the pixel display module.
BACKGROUND
[0003] Most of current display screens use three-color sub-pixels
as a primary color for color display, especially RGB as the most
common application of three-color. A change of color can be
realized through a change of three color channels of red R, green G
and blue B and their superposition, which is one of color systems
used widely.
[0004] The performance of the display is usually represented by a
display resolution. The display resolution is a quantity of
individual pixels that can be displayed in each dimension (i.e.
1920*1080), or the performance of the display is usually
represented by a display density that is a relative quantity of
pixels in per inch (aka pixels per inch PPI).
[0005] At present, the display device with a high PPI and a high
resolution has become mainstream product in the field of display
technology. However, an organic light-emitting layer of an OLED is
manufactured by an evaporation technique using a fine metal mask
(FMM). However, technology precision of composing a picture on
organic materials is high, and so the minimum size of each layer is
limited. When forming the OLED on a same plane, a sufficient space
must be maintained between adjacent pixels to avoid overlapping of
adjacent organic light-emitting layers. Therefore, due to the
limitations of the fine metal mask and the evaporation process
itself, for example a mask opening cannot be made smaller. Even
though the high PPI can be achieved through an arrangement of
pixels, the evaporation process using two or more masks increases
the cost and process time.
SUMMARY
[0006] In view of this, embodiments of the present application
provide a pixel display module and a mask for manufacturing the
pixel display module in order to solve the problem that it is
difficult to manufacture display devices with high PPI and
uniformity.
[0007] An aspect of the present application provides a pixel
display module, including: a plurality of array-distributed pixel
unit groups. Each pixel unit group includes four array-distributed
sub-pixels.
[0008] Two sub-pixels located on a diagonal of each pixel unit
group emit a same first color light, and two sub-pixels located on
other diagonal of each pixel unit group respectively emit a second
color light and a third color light. Two pixel unit groups adjacent
in a first direction are staggered along a second direction, and
the second direction is perpendicular to the first direction.
[0009] An aspect of the present application provides a mask for
manufacturing the pixel display module, including: a plurality of
open areas, wherein at least one open area corresponds to two
sub-pixels which are respectively belong to the two adjacent pixel
unit groups, are adjacent to each other, are located in a same row
or in a same column and emits the same color light.
[0010] The embodiments of the present application provide a pixel
display module, and the pixel display module includes a plurality
of array-distributed pixel unit groups. Each pixel unit group
includes four array-distributed sub-pixels. Two sub-pixels located
on a diagonal of each the pixel unit groups emit a same first color
light, and two sub-pixels located on other diagonal of each pixel
unit group respectively emit a second color light and a third color
light. It is ensured that two sub-pixels that emit a same color
light are staggered in position, and the display effect is more
uniform.
BRIEF DESCRIPTION OF DRAWINGS
[0011] FIG. 1 is a schematic structural diagram of a pixel display
module according to an embodiment of the present application.
[0012] FIG. 2 is a diagram of a pixel distribution of a pixel unit
group in a pixel display module according to an embodiment of the
present application.
[0013] FIG. 3 is a diagram of a distribution of two adjacent pixel
unit groups in a pixel display module according to an embodiment of
the present application.
[0014] FIG. 4 is a diagram of a distribution of two adjacent pixel
unit groups in a pixel display module according to an embodiment of
the present application.
[0015] FIG. 5 is a diagram of a distribution of two adjacent pixel
unit groups in a pixel display module according to an embodiment of
the present application.
[0016] FIG. 6 is a schematic structural diagram of a pixel display
module according to an embodiment of the present application.
[0017] FIG. 7 is a schematic structural diagram of a pixel display
module according to another embodiment of the present
application.
[0018] FIG. 8 is a diagram of a distribution of a first pixel unit
group and a second pixel unit group in a pixel display module
according to an embodiment of the present application.
[0019] FIG. 9 is a diagram of a distribution of a first pixel unit
group and a second pixel unit group in a pixel display module
according to an embodiment of the present application.
DETAILED DESCRIPTION
[0020] Technical solutions in embodiments of the present
application are clearly and completely described in the following
with reference to accompanying drawings in the embodiments of the
present application. Obviously, described embodiments are only a
part of embodiments of the present application, and are not all
embodiments. All other embodiments obtained by those skilled in the
art based on the embodiments of the present application without
creative efforts belong to protective scope of the present
application.
[0021] FIG. 1 is a schematic structural diagram of a pixel display
module according to an embodiment of the present application. As
shown in FIG. 1, the pixel display module includes a plurality of
array-distributed pixel unit groups 1. Each pixel unit group 1
includes four array-distributed sub-pixels. As shown in FIG. 2, a
sub-pixel 2 and a sub-pixel 3 located on a diagonal of a pixel unit
group 1 emit a same first color light, and a sub-pixel 4 and a
sub-pixel 5 located on other diagonal of the pixel unit group 1
respectively emit a second color light and a third color light.
[0022] Which diagonal having sub-pixels that emit the same color
light of the pixel unit group may be selected according to actual
needs and manufacture process. In an embodiment of the present
application, The sub-pixel 4 and the sub-pixel 5 located on a
diagonal of the pixel unit group 1 emit the same first color light,
and the sub-pixel 2 and the sub-pixel 3 located on other diagonal
of the pixel unit group 1 respectively emit the second color light
and the third color light.
[0023] The embodiments of the present application provide the pixel
display module including the plurality of array-distributed pixel
unit groups 1. Each pixel unit group 1 includes four
array-distributed sub-pixels. Two sub-pixels located on a diagonal
of each pixel unit group emit the same first color light, and two
sub-pixels located on other diagonal of each pixel unit group
respectively emit the second color light and the third color light.
It is ensured that two sub-pixels that emit the same color light
are staggered in position, and the uniformity of the display can be
improved.
[0024] An embodiment of the present application provides a pixel
display module. Two pixel unit groups adjacent in a first direction
are staggered along a second direction, and the second direction is
perpendicular to the first direction. In an embodiment of the
present application, the first direction is a column direction, and
the second direction is a row direction correspondingly. Two pixel
unit groups 1 adjacent in the column direction are staggered along
the row direction, which may be staggered to the right or left. A
staggered distance is less than a distance of one sub-pixel in the
row direction, i.e., in the two pixel unit groups adjacent in the
column direction, one sub-pixel in a following pixel unit group 1
is located between two pixels in the above pixel unit group 1.
[0025] When people see the array-distributed pixel display module,
a direction of moving along the left and right direction of eyes is
defined as the row direction of the pixel display module, and a
direction of moving along the up and down direction of the eyes is
defined as the column direction of the pixel display module.
[0026] In embodiments of the present application, the staggered
distance along the row direction of the two pixel unit groups 1
that are adjacent in the column direction may be selected according
to the actual pixel requirements and process requirements. The
staggered distance may be less than the distance of one sub-pixel
in the row direction, or the staggered distance may be more than
the distance of one sub-pixel in the row direction, or the
staggered distance may be equal to the distance of one sub-pixel,
which is not limited in the embodiments of the present
application.
[0027] In an embodiment of the present application, the first
direction is the row direction, and the second direction is the
column direction correspondingly. Two pixel unit groups 1 adjacent
are staggered a distance along the column direction and the
distance may be selected according to the actual pixel requirements
and process requirements, which is not limited in the embodiments
of the present application.
[0028] In a pixel display module provided by an embodiment of the
present application, Two pixel unit groups 1 adjacent are
staggered, so that the sub-pixels emitting the first color light,
the sub-pixels emitting the second color light, and the sub-pixels
emitting the third color light are uniformly displayed in the
column direction or the row direction.
[0029] A pixel display module is provided by an embodiment of the
present application, as shown in FIG. 3. A first direction is a
column direction, and a second direction is a row direction
correspondingly. Two pixel unit groups adjacent to each other in
the column direction are staggered to the right by a distance of
one sub-pixel along the row direction. That is to say, in the
column direction, a first sub-pixel 2 of a first row in a first
pixel unit group 1 located in a lower row is located directly below
a second sub-pixel 3 of a second row in a first pixel unit group 1
located in a upper row, and the first sub-pixel 2 and the second
sub-pixel 3 emit a same color light. In an embodiment of the
present application, the first sub-pixel 2 and the second sub-pixel
3 emit a first color light, i.e., two sub-pixels on a diagonal of
the pixel unit group 1 emit a same color light. In an embodiment of
the present application, two sub-pixels on a diagonal of the pixel
unit group 1 emit green light.
[0030] In a pixel display module provided by an embodiment of the
present application, two pixel unit groups adjacent in the column
direction are staggered a distance of one sub-pixel along the row
direction. Two sub-pixels, which are adjacent to each other in the
column direction and are respectively belong to the two adjacent
pixel unit groups, emit a same color light. The two sub-pixels that
emit the same color light can share one opening on the mask to
increase the aperture ratio of the display device. Under the
process conditions, a pixel unit of a smaller size can be
fabricated; thereby the PPI of the display device is increased.
[0031] In order to make two adjacent sub-pixels, which are
respectively belong to two pixel unit groups and are adjacent in
the column direction, emit a same color light, two pixel unit
groups adjacent in the column direction are staggered in the row
direction with a distance of one sub-pixel along the row direction.
Whether the lower pixel unit group staggers to the left or the
right relative to the upper pixel unit group may be selected
according to the arrangement of sub-pixels in the pixel unit
groups. In an embodiment of the present application, as is shown in
FIG. 4, when two pixel unit groups adjacent in the column direction
stagger with each other along the row direction, the group of pixel
units in the next row staggers a distance of one sub-pixel along
the row direction to the left along the row direction. That is to
say, a second sub-pixel 4 of a first row in a first pixel unit
group 1 located in a lower row is located directly below a first
sub-pixel 5 of a second row in the first pixel unit group 1 located
in a upper row, which is not limited in the embodiments of the
present application.
[0032] When the first direction is a row direction, the second
direction is a column direction, in order to make array-distributed
pixel unit groups in a pixel display module achieve that two
adjacent sub-pixels respectively belong to two adjacent pixel unit
groups 1 emit the same color light, not only two adjacent pixel
unit groups 1 in the column direction can be staggered a distance
of one sub-pixel along the row direction, but also two adjacent
pixel unit groups 1 in the row direction can be staggered a
distance of one sub-pixel distance along the column direction. As
is shown in FIG. 5, two pixel unit groups 1 adjacent in the row
direction are staggered a distance of one sub-pixel distance along
the column direction, i.e., in the row direction, a first sub-pixel
5 of a second row of a right first pixel unit group is located in
the right side or the left side of a second sub-pixel 4 of a first
row of a left first pixel unit group, and the first sub-pixel 5 and
the second sub-pixel 4 emit a same color light. A schematic
structural diagram of the pixel display module composed of the
array-distributed pixel unit groups is shown in FIG. 6.
[0033] The manner, in which two pixel unit groups adjacent in the
row direction are staggered along the column direction, is selected
according to the sub-pixel arrangement in the pixel unit groups,
which is not limited in the embodiment of the present
application.
[0034] The distance, mentioned above, of a sub-pixel refers to a
distance of a sub-pixel in a direction in which two adjacent pixel
unit groups are staggered with each other. That is to say, as shown
in FIG. 7, when two adjacent pixel unit groups are staggered with
each other along the row direction, the distance of one sub-pixel D
is equal to the length of a sub-pixel itself in the row direction
plus a length of right isolation column connected to the sub-pixel
in the row direction, and plus a length of the left isolation
column connected to the sub-pixel in the row direction.
[0035] The embodiments of the present application provide a pixel
display module, and the pixel display module includes a plurality
of array-distributed pixel unit groups. Each pixel unit group
includes four array-distributed sub-pixels. Two sub-pixels located
on a diagonal of each pixel unit group emit a same first color
light, and two sub-pixels located on other diagonal of each pixel
unit group respectively emit a second color light and a third color
light. The first color light is green light, and the second color
light and the third color light are respectively red light and blue
light.
[0036] The colors of the first color light, the second color light
and the third color light can be selected according to actual need.
In another embodiment of the application, the first color light may
be blue light, and the second color light and the third color light
may be respectively red light and green light. In another
embodiment of the application, the first color light may be red
light, and the second color light and the third color light may be
respectively green light and blue light.
[0037] The embodiments of the present application provide a pixel
display module. In order to reduce the difficulty of masking a mask
during the manufacturing process, a shape of the pixel unit group
is a rectangle, so that the entire pixel is arranged in a
rectangular array, which reduces the difficulty of masking the web.
A length and a width of the rectangle may be selected according to
actual need and process. In an embodiment of the present
application, a shape of the pixel unit group is a square, which is
not limited in the embodiments of the present application.
[0038] In order to make a pixel unit group rectangular, shapes of
four sub-pixels in the pixel unit group is designed according to
the actual application scenario. For example, the shapes of four
sub-pixels in the pixel unit group may all be square, or may all be
rectangular, may partially be rectangular and partially be square,
as shown in FIG. 7. As long as a shape of a pixel unit group
composed of four sub-pixels is rectangular, the shapes of the four
sub-pixels in the pixel unit group are not limited in the
embodiments of the present application.
[0039] The embodiments of the present application provide a pixel
display module, and the pixel display module includes a plurality
of array-distributed pixel unit groups 1. Each pixel unit group 1
comprises a first pixel unit 6 and a second pixel unit 7. As is
shown FIG. 8, the first pixel unit 6 or the second pixel unit 7 is
composed of three sub-pixels emitting different color lights. The
first pixel unit 6 and the second pixel unit 7 share two
sub-pixels, which respectively emit a second color light and a
third color light and locate on a diagonal of the pixel unit group
1. When the pixel unit group emits light, the first pixel unit 6
and the second pixel unit 7 share the two sub-pixels, which emit
the different light and locate on a diagonal of the pixel unit
group; and two sub-pixels, not be shared by the first pixel unit 6
and the second pixel unit 7, emit a same color light. Thus, the
display uniformity of the pixel unit group 1 is improved.
[0040] In an embodiment of the present application, in the pixel
unit group 1, a distance between two sub-pixels in the column
direction is twice a distance between two sub-pixels in the row
direction. As shown in FIG. 9, the distance between two sub-pixels
refers to a distance between the centers of two sub-pixels.
According to the pixel display module provided the embodiment of
the present application, the distance between two sub-pixels of the
pixel unit group in the column direction is twice the distance
between two sub-pixels in the row direction. Since the first pixel
unit 6 and the second pixel unit 7 share the two sub-pixels which
emit the different light, when the sub-pixels are displayed under
the driving mode, the display units of the first pixel unit 6 and
the second pixel unit 7 are all square, which has no effect on the
displaying signal and displaying proportion of the display
device.
[0041] In order to achieve that the distance between two sub-pixels
of the pixel unit group in the column direction is twice the
distance between two sub-pixels in the row direction, in an
embodiment of the present application, the shapes of the four
sub-pixels in each pixel unit group 1 are rectangular as shown in
FIG. 9. A shape of each sub-pixel of the four sub-pixels in each
pixel unit group 1 may be selected according to a specific
application scenario, for example, the shape may be a square, or
may be a rectangle the four corners of which are rounded. The shape
of the sub-pixel is not limited in the embodiments of the
application.
[0042] The embodiments of the present application provide a mask
for manufacturing the pixel display module. The mask includes a
plurality of open areas, and at least one open area corresponds to
two sub-pixels, which are respectively belong to the two adjacent
pixel unit groups, are located in a same row or in a same column
and emit the same color light. Since sub-pixels emitting different
colors in a pixel structure are made by different evaporation
processes, the masks corresponding to the sub-pixels emitting
different colors are also different. An opening on the mask for
manufacturing the pixel display module according to the embodiments
of the application corresponds to two adjacent sub-pixels, which
emit a same color light and respectively belong to two adjacent
pixel unit groups. When the PPI of the display device is higher,
the difficulty of manufacturing the mask is reduced, and the effect
of the pixel structure obtained by evaporation is better.
[0043] The above is only the preferred embodiment of the present
application, and that is not intended to limit the present
invention. Any modifications, equivalents, and the like made within
the spirit and principles of the present invention should be
included in the scope of the present invention.
* * * * *