U.S. patent number 10,810,925 [Application Number 16/383,988] was granted by the patent office on 2020-10-20 for pixel unit, display substrate and method for manufacturing display substrate.
This patent grant is currently assigned to BOE TECHNOLOGY GROUP CO., LTD., HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.. The grantee listed for this patent is BOE Technology Group Co., Ltd., Hefei BOE Optoelectronics Technology Co., Ltd.. Invention is credited to Xiujuan Cui, Jian Li, Jingjing Li, Guilin Liu, Wenjie Xu.
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United States Patent |
10,810,925 |
Cui , et al. |
October 20, 2020 |
Pixel unit, display substrate and method for manufacturing display
substrate
Abstract
Embodiments of the present disclosure provide a pixel unit, a
display substrate, and a method for manufacturing the display
substrate. The pixel unit includes: a first sub-pixel region; a
second sub-pixel region located at a periphery of the first
sub-pixel region and surrounding the first sub-pixel region; and a
third sub-pixel region located at a periphery of the second
sub-pixel region and surrounding the second sub-pixel region.
Inventors: |
Cui; Xiujuan (Beijing,
CN), Li; Jingjing (Beijing, CN), Liu;
Guilin (Beijing, CN), Li; Jian (Beijing,
CN), Xu; Wenjie (Beijing, CN) |
Applicant: |
Name |
City |
State |
Country |
Type |
Hefei BOE Optoelectronics Technology Co., Ltd.
BOE Technology Group Co., Ltd. |
Anhui
Beijing |
N/A
N/A |
CN
CN |
|
|
Assignee: |
HEFEI BOE OPTOELECTRONICS
TECHNOLOGY CO., LTD. (Anhui, CN)
BOE TECHNOLOGY GROUP CO., LTD. (Beijing, CN)
|
Family
ID: |
1000005128092 |
Appl.
No.: |
16/383,988 |
Filed: |
April 15, 2019 |
Prior Publication Data
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Document
Identifier |
Publication Date |
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US 20200058245 A1 |
Feb 20, 2020 |
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Foreign Application Priority Data
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Aug 17, 2018 [CN] |
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2018 1 0946419 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
G09G
3/3208 (20130101); G09G 3/2003 (20130101); H01L
27/3218 (20130101); H01L 51/56 (20130101); H01L
51/5012 (20130101); H01L 27/3216 (20130101); G09G
2300/0452 (20130101) |
Current International
Class: |
G09G
3/3208 (20160101); H01L 51/56 (20060101); H01L
51/50 (20060101); G09G 3/20 (20060101); H01L
27/32 (20060101) |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
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1921140 |
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Feb 2007 |
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CN |
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104409474 |
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Mar 2015 |
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CN |
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107452778 |
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Dec 2017 |
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CN |
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2007026947 |
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Feb 2007 |
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JP |
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Other References
First Office Action, including Search Report, for Chinese Patent
Application No. 201810946419.4, dated Apr. 1, 2020, 16 pages. cited
by applicant.
|
Primary Examiner: Boddie; William
Attorney, Agent or Firm: Westman, Champlin & Koehler,
P.A.
Claims
What is claimed is:
1. A pixel unit, comprising: a first sub-pixel region; a second
sub-pixel region located at a periphery of the first sub-pixel
region and surrounding the first sub-pixel region; and a third
sub-pixel region located at a periphery of the second sub-pixel
region and surrounding the second sub-pixel region, wherein an area
of the second sub-pixel region is equal to an area of the third
sub-pixel region, and an area of the first sub-pixel region is half
of the area of the second sub-pixel region, wherein an illuminant
color of the first sub-pixel region is green, an illuminant color
of the second sub-pixel region is red, and an illuminant color of
the third sub-pixel region is blue, wherein a ratio of a side
length of the first sub-pixel region, a side length of the second
sub-pixel region to a side length of the third sub-pixel region is
3*5.sup.(-1/2):3*0.6.sup.1/2:3.
2. The pixel unit according to claim 1, wherein the first sub-pixel
region has a square shape.
3. The pixel unit according to claim 1, wherein centers of the
first sub-pixel region, the second sub-pixel region, and the third
sub-pixel region coincide with each other.
4. The pixel unit according to claim 1, wherein the pixel unit
comprises a light emitting diode.
5. The pixel unit according to claim 1, wherein centers of the
first sub-pixel region, the second sub-pixel region, and the third
sub-pixel region do not coincide with each other.
6. The pixel unit according to claim 1, wherein the pixel unit
further comprises at least one additional sub-pixel region other
than the first sub-pixel region, the second sub-pixel region, and
the third sub-pixel region, and the at least one additional
sub-pixel region surrounds the third sub-pixel region or surrounds
the periphery of the third sub-pixel region in a
one-surrounding-one manner.
7. A display substrate, comprising: a base substrate; and a
plurality of pixel units according to claim 1 arranged in an array
on the base substrate.
8. The display substrate according to claim 7, wherein, in two
adjacent pixel units, an illuminant color of the first sub-pixel
region of one of the pixel units and an illuminant color of the
third sub-pixel region of the other of the pixel units are
same.
9. The display substrate according to claim 8, wherein, in the two
adjacent pixel units, an illuminant color of the second sub-pixel
region of the one of the pixel units and an illuminant color of the
first sub-pixel region of the other of the pixel units are same; or
wherein, in the two adjacent pixel units, the illuminant color of
the second sub-pixel region of the one of the pixel units and an
illuminant color of the second sub-pixel region of the other of the
pixel units are same.
10. The display substrate according to claim 7, wherein, in two
adjacent pixel units, an illuminant color of the first sub-pixel
region of a first pixel unit and an illuminant color of the second
sub-pixel region of a second pixel unit are same, an illuminant
color of the second sub-pixel region of the first pixel unit and an
illuminant color of the third sub-pixel region of the second pixel
unit are same, and an illuminant color of the third sub-pixel
region of the first pixel unit and an illuminant color of the first
sub-pixel region of the second pixel unit are same.
11. The display substrate according to claim 7, wherein, in two
adjacent pixel units, an illuminant color of the first sub-pixel
region of a first pixel unit and an illuminant color of the second
sub-pixel region of a second pixel unit are same, an illuminant
color of the second sub-pixel region of the first pixel unit and an
illuminant color of the first sub-pixel region of the second pixel
unit are same, and an illuminant color of the third sub-pixel
region of the first pixel unit and an illuminant color of the third
sub-pixel region of the second pixel unit are same.
12. The display substrate according to claim 7, wherein, in two
adjacent pixel units, an illuminant color of the first sub-pixel
region of a first pixel unit and an illuminant color of the first
sub-pixel region of a second pixel unit are same, an illuminant
color of the second sub-pixel region of the first pixel unit and an
illuminant color of the third sub-pixel region of the second pixel
unit are same, and an illuminant color of the third sub-pixel
region of the first pixel unit and an illuminant color of the
second sub-pixel region of the second pixel unit are same.
13. The display substrate according to claim 7, wherein, in two
adjacent pixel units, the first sub-pixel regions each have a first
illuminant color, the second sub-pixel regions each have a second
illuminant color, and the third sub-pixel regions each have a third
illuminant color.
14. The display substrate according to claim 7, wherein a
separation distance between sub-pixel regions having a same
illuminant color in two adjacent pixel units is less than
two-thirds of a width of any one of the pixel units.
15. A method for manufacturing a display substrate, comprising:
providing a base substrate; forming a plurality of pixel units in
an array on the base substrate, wherein each of the pixel units
comprises: a first sub-pixel region; a second sub-pixel region
located at a periphery of the first sub-pixel region and
surrounding the first sub-pixel region; and a third sub-pixel
region located at a periphery of the second sub-pixel region and
surrounding the second sub-pixel region, wherein an area of the
second sub-pixel region is equal to an area of the third sub-pixel
region, and an area of the first sub-pixel region is half of the
area of the second sub-pixel region, wherein an illuminant color of
the first sub-pixel region is green, an illuminant color of the
second sub-pixel region is red, and an illuminant color of the
third sub-pixel region is blue, wherein a ratio of a side length of
the first sub-pixel region, a side length of the second sub-pixel
region to a side length of the third sub-pixel region is
3*5.sup.(-1/2):3*0.6.sup.1/2:3.
16. The method according to claim 15, wherein the forming a
plurality of pixel units in an array on the base substrate
comprises: forming a first color layer pattern in the first
sub-pixel region, a second color layer pattern in the second
sub-pixel region, and a third color layer pattern in the third
sub-pixel region on the base substrate, respectively, wherein, in
each pixel unit, the second color layer pattern surrounds the first
color layer pattern, and the third color layer pattern surrounds
the second color layer pattern.
17. The method according to claim 16, wherein the first color layer
pattern, the second color layer pattern, and the third color layer
pattern are respectively made from luminescent material layers of
different colors or color filter layers of different colors.
Description
CROSS-REFERENCE TO RELATED APPLICATION
This application claims priority of Chinese Patent Application No.
201810946419.4 filed on Aug. 17, 2018 in the China National
Intellectual Property Administration, the disclosure of which is
incorporated herein by reference in entirety.
TECHNICAL FIELD
Embodiments of the present disclosure relate to the field of
display technology, and in particular, to a pixel unit, a display
substrate including the pixel unit, and a method for manufacturing
the display substrate.
BACKGROUND
Organic light emitting diodes (OLEDs) represent a developing
direction of display technology and are more and more concerned.
OLED display technology has advantages of self-illumination, high
brightness, high efficiency, fast response, low voltage drive and
low power consumption, low cost, few processes and so on. OLED
technology is widely used in mobile phones, digital video cameras,
DVD players, personal digital assistants (PDAs), notebook
computers, car stereos and televisions.
In the related art, taking an RGB three-color OLED display panel as
an example, the arrangement mode of sub-pixels on the display panel
mainly includes a standard RGB arrangement mode and a PenTile
arrangement mode. In the standard RGB arrangement mode, each pixel
is composed of three sub-pixels of red, green and blue; while in
the PenTile arrangement mode, each pixel is composed of only two
sub-pixels of red and green, or blue and green.
SUMMARY
Some embodiments of the present disclosure provide a pixel unit,
comprising:
a first sub-pixel region;
a second sub-pixel region located at a periphery of the first
sub-pixel region and surrounding the first sub-pixel region;
and
a third sub-pixel region located at a periphery of the second
sub-pixel region and surrounding the second sub-pixel region.
In some embodiments, the first sub-pixel region, the second
sub-pixel region, and the third sub-pixel region have a same
area.
In some embodiments, the first sub-pixel region has a square
shape.
In some embodiments, an area of the second sub-pixel region is
equal to an area of the third sub-pixel region, and an area of the
first sub-pixel region is half of the area of the second sub-pixel
region.
In some embodiments, centers of the first sub-pixel region, the
second sub-pixel region, and the third sub-pixel region coincide
with each other.
In some embodiments, any two of the first sub-pixel region, the
second sub-pixel region, and the third sub-pixel region have
different illuminant color.
In some embodiments, the pixel unit comprises a light emitting
diode.
In some embodiments, centers of the first sub-pixel region, the
second sub-pixel region, and the third sub-pixel region do not
coincide with each other.
In some embodiments, the pixel unit further comprises at least one
additional sub-pixel region other than the first sub-pixel region,
the second sub-pixel region, and the third sub-pixel region, and
the at least one additional sub-pixel region surrounds the third
sub-pixel region or surrounds the periphery of the third sub-pixel
region in a one-surrounding-one manner.
Some embodiments of the present disclosure further provide a
display substrate, comprising:
a base substrate; and
a plurality of pixel units according to any one of the above
embodiments arranged in an array on the base substrate.
In some embodiments, in two adjacent pixel units, an illuminant
color of the first sub-pixel region of one of the pixel units and
an illuminant color of the third sub-pixel region of the other of
the pixel units are same.
In some embodiments, in the two adjacent pixel units, an illuminant
color of the second sub-pixel region of the one of the pixel units
and an illuminant color of the first sub-pixel region of the other
of the pixel units are same; or wherein, in the two adjacent pixel
units, the illuminant color of the second sub-pixel region of the
one of the pixel units and an illuminant color of the second
sub-pixel region of the other of the pixel units are same.
In some embodiments, in two adjacent pixel units, an illuminant
color of the first sub-pixel region of a first pixel unit and an
illuminant color of the second sub-pixel region of a second pixel
unit are same, an illuminant color of the second sub-pixel region
of the first pixel unit and an illuminant color of the third
sub-pixel region of the second pixel unit are same, and an
illuminant color of the third sub-pixel region of the first pixel
unit and an illuminant color of the first sub-pixel region of the
second pixel unit are same.
In some embodiments, in two adjacent pixel units, an illuminant
color of the first sub-pixel region of a first pixel unit and an
illuminant color of the second sub-pixel region of a second pixel
unit are same, an illuminant color of the second sub-pixel region
of the first pixel unit and an illuminant color of the first
sub-pixel region of the second pixel unit are same, and an
illuminant color of the third sub-pixel region of the first pixel
unit and an illuminant color of the third sub-pixel region of the
second pixel unit are same.
In some embodiments, in two adjacent pixel units, an illuminant
color of the first sub-pixel region of a first pixel unit and an
illuminant color of the first sub-pixel region of a second pixel
unit are same, an illuminant color of the second sub-pixel region
of the first pixel unit and an illuminant color of the third
sub-pixel region of the second pixel unit are same, and an
illuminant color of the third sub-pixel region of the first pixel
unit and an illuminant color of the second sub-pixel region of the
second pixel unit are same.
In some embodiments, in two adjacent pixel units, the first
sub-pixel regions each have a first illuminant color, the second
sub-pixel regions each have a second illuminant color, and the
third sub-pixel regions each have a third illuminant color.
In some embodiments, a separation distance between sub-pixel
regions having a same illuminant color in two adjacent pixel units
is less than two-thirds of a width of any one of the pixel
units.
Some embodiments of the present disclosure further provide a method
for manufacturing a display substrate, comprising:
providing a base substrate;
forming a plurality of pixel units in an array on the base
substrate,
wherein each of the pixel units comprises: a first sub-pixel
region; a second sub-pixel region located at a periphery of the
first sub-pixel region and surrounding the first sub-pixel region;
and a third sub-pixel region located at a periphery of the second
sub-pixel region and surrounding the second sub-pixel region.
In some embodiments, the forming a plurality of pixel units in an
array on the base substrate comprises:
forming a first color layer pattern in the first sub-pixel region,
a second color layer pattern in the second sub-pixel region, and a
third color layer pattern in the third sub-pixel region on the base
substrate, respectively,
wherein, in each pixel unit, the second color layer pattern
surrounds the first color layer pattern, and the third color layer
pattern surrounds the second color layer pattern.
In some embodiments, the first color layer pattern, the second
color layer pattern, and the third color layer pattern are
respectively made from luminescent material layers of different
colors or color filter layers of different colors.
BRIEF DESCRIPTION OF THE DRAWINGS
In order to more clearly illustrate the technical solutions in the
embodiments of the present disclosure, the drawings for
illustrating the embodiments will be briefly described below, and
it should be understood that the drawings described below only
relate to some embodiments of the present disclosure, rather than
limiting the present disclosure. In the drawings:
FIG. 1 is a schematic structural view of a pixel unit according to
an embodiment of the present disclosure;
FIG. 2 is a schematic structural view of a pixel unit according to
another embodiment of the present disclosure;
FIG. 3 is a schematic structural view of a pixel unit according to
still another embodiment of the present disclosure;
FIG. 4 is a schematic structural view of a pixel unit according to
still another embodiment of the present disclosure;
FIG. 5 is a schematic structural view of a pixel unit according to
still another embodiment of the present disclosure;
FIG. 6 is a schematic structural view of a pixel unit according to
still another embodiment of the present disclosure;
FIG. 7 is a schematic view showing sub-pixel regions on a display
substrate arranged in a standard RGB arrangement mode;
FIG. 8 is a schematic view showing sub-pixel regions on a display
substrate arranged in a PenTile arrangement mode;
FIG. 9 is a schematic view of an exemplary arrangement of pixel
units on a display substrate according to an embodiment of the
present disclosure;
FIG. 10 is a schematic view of an exemplary arrangement of pixel
units on a display substrate according to another embodiment of the
present disclosure;
FIG. 11 is a schematic view of an exemplary arrangement of pixel
units on a display substrate according to still another embodiment
of the present disclosure;
FIG. 12 is a schematic view of an exemplary arrangement of pixel
units on a display substrate according to still another embodiment
of the present disclosure;
FIG. 13 is a schematic view of an exemplary arrangement of pixel
units on a display substrate according to still another embodiment
of the present disclosure;
FIG. 14 is an exemplary partial cross-sectional view of a display
substrate according to an embodiment of the present disclosure;
and
FIG. 15 is a flow chart of a method for manufacturing a display
substrate according to an embodiment of the present disclosure.
DETAILED DESCRIPTION OF EMBODIMENTS
In order to more clearly illustrate the objectives, technical
solutions and advantages of the present disclosure, the embodiments
of the present disclosure will be described in detail below with
reference to the accompanying drawings. It is to be understood that
the following description of the embodiments is intended to explain
and describe the general concept of the present disclosure, but
should not be interpreted as limiting the present disclosure. In
the specification and drawings, the same or similar reference
numerals refer to the same or similar components or members. For
the sake of clarity, the drawings are not necessarily drawn to
scale, and some of well-known components and structures may be
omitted in the drawings.
Unless otherwise defined, technical terms or scientific terms used
in the present disclosure have the general meanings as understood
by those skilled in the art. The words "first", "second" and the
like used in the present disclosure do not denote any order,
quantity, or importance, but are only used to distinguish different
components. The word "a" or "an" does not exclude a plurality of
the items in question. The word "comprise", "include" or the like
means that the element or item preceding the word covers the
elements or items listed behind the word and equivalents thereof,
but does not exclude other elements or items. The word "connect",
"join" or the like are not limited to physical or mechanical
connection, but may include electrical connection, whether direct
or indirect. "Upper", "lower", "left", "right", "top", "bottom or
the like are only used to indicate relative positional
relationship. If the absolute position of the described object is
changed, then the relative positional relationship may also
accordingly changed. If an element such as a layer, a film, a
region or a base substrate is referred to as being located "above"
or "below" another element, the element may be "directly" located
"above" or "below" the another element, or there may be
intermediate elements therebetween.
FIG. 1 illustrates a pixel unit 100a according to an embodiment of
the present disclosure. The pixel unit 100a includes a first
sub-pixel region 10, a second sub-pixel region 20, and a third
sub-pixel region 30. The second sub-pixel region 20 is located at a
periphery of the first sub-pixel region 10 and surrounds the first
sub-pixel region 10. The third sub-pixel region 30 is located at a
periphery of the second sub-pixel region 20 and surrounds the
second sub-pixel region 20. As an example, the first sub-pixel
region 10 may be located at a center position (not at an edge
position) of the pixel unit 100a.
As a specific example, the first sub-pixel region 10 is of a
rectangle, optionally a square; the second sub-pixel region 20 is
of a rectangular ring or a hollow rectangle, optionally a hollow
square; the third sub-pixel region 30 is of a rectangular ring or a
hollow rectangle, optionally a hollow square.
In some embodiments of the present disclosure, each sub-pixel
region includes not only a display region portion but also a
non-display region portion.
In some embodiments of the present disclosure, the arrangement that
"the second sub-pixel region surrounds the first sub-pixel region"
does not mean that the center of the second sub-pixel region
necessarily coincides with the center of the first sub-pixel
region, actually the center of the second sub-pixel region may
offset from the center of the first sub-pixel region to some
extent. Similarly, the arrangement that "the third sub-pixel region
surrounds the second sub-pixel region" does not mean that the
center of the third sub-pixel region necessarily coincides with the
center of the second sub-pixel region, actually the center of the
third sub-pixel region may also offset from the center of the
second sub-pixel to some extent. However, in order to enable the
second sub-pixel region 20 and the third sub-pixel region 30 to be
more evenly distributed around the first sub-pixel region 10, the
centers of the first sub-pixel region 10, the second sub-pixel
region 20, and the third sub-pixel regions 30 may coincide with
each other. In this case, it is advantageous to maintain the
uniformity of the width w2 of sides of the second sub-pixel region
20 and the width w3 of sides of the third sub-pixel region 30 (as
shown in FIG. 1), to prevent the width w2 of sides of the second
sub-pixel region 20 and the width w3 of sides of the third
sub-pixel region 30 from being too narrow in some portions. The
width w2 of sides of the second sub-pixel region 20 and the width
w3 sides of the third sub-pixel region 30 to be excessive narrow
may increase the manufacturing difficulty.
In some embodiments of the present disclosure, the first sub-pixel
region 10, the second sub-pixel region 20, and the third sub-pixel
region 30 may have different illuminant colors. For example, for
the case of RGB (red, green, and blue) sub-pixel display, the first
sub-pixel region 10, the second sub-pixel region 20, and the third
sub-pixel region 30 may be used to emit green light, red light, and
blue light, respectively. FIGS. 1 to 6 illustrate six examples of
the combination of the first sub-pixel region 10, the second
sub-pixel region 20, and the third sub-pixel region 30 having
different illuminant colors in the pixel unit.
In the drawings of the present disclosure, the sub-pixel region
with red illuminant color is labeled as R, the sub-pixel region
with green illuminant color is labeled as G, and the sub-pixel
region with blue illuminant color is labeled as B.
In the exemplary pixel unit 100a shown in FIG. 1, the illuminant
color of the first sub-pixel region 10 is green (represented by
left diagonals), and the illuminant color of the second sub-pixel
region 20 is red (represented by intersection lines), and the
illuminant color of the third sub-pixel region 30 is blue
(represented by right diagonals). In the exemplary pixel unit 100b
shown in FIG. 2, the illuminant color of the first sub-pixel region
10 is blue, the illuminant color of the second sub-pixel region 20
is green, and the illuminant color of the third sub-pixel region 30
is red. In the exemplary pixel unit 100c shown in FIG. 3, the
illuminant color of the first sub-pixel region 10 is red, the
illuminant color of the second sub-pixel region 20 is blue, and the
illuminant color of the third sub-pixel region 30 is green. In the
exemplary pixel unit 100d shown in FIG. 4, the illuminant color of
the first sub-pixel region 10 is green, the illuminant color of the
second sub-pixel region 20 is blue, and the illuminant color of the
third sub-pixel region 30 is red. In the exemplary pixel unit 100e
shown in FIG. 5, the illuminant color of the first sub-pixel region
10 is blue, the illuminant color of the second sub-pixel region 20
is red, and the illuminant color of the third sub-pixel region 30
is green. In the exemplary pixel unit 100f shown in FIG. 6, the
illuminant color of the first sub-pixel region 10 is red, the
illuminant color of the second sub-pixel region 20 is green, and
the illuminant color of the third sub-pixel region 30 is blue.
In the embodiments of the present disclosure, the green illuminant
color is represented by left diagonals, the red illuminant color is
represented by intersection lines, and the blue illuminant color is
represented by right diagonals.
In the pixel units 100a, 100b, 100c, 100d, 100e, and 100f according
to the embodiments of the present disclosure, different sub-pixel
regions are arranged from the center to the periphery of the pixel
in a one-surrounding-one manner, which is different from the
arrangement mode in which the strip-shaped sub-pixel regions are
arranged in parallel in the related art (for example, the standard
RGB arrangement mode or the PenTile arrangement mode).
FIG. 7 is a schematic view showing sub-pixel regions arranged in a
standard RGB arrangement mode. FIG. 7 shows 3.times.3 pixels. In
FIG. 7, each pixel unit includes three elongated sub-pixel regions,
respectively, a blue sub-pixel region 21, a green sub-pixel region
22, and a red sub-pixel region 23. Assuming that each sub-pixel
region has a width of a and a length of 3a, the pixel unit composed
of three sub-pixel regions may be regarded as a square having a
side length of 3a. In this case, a distance between the sub-pixel
regions having the same illuminant color (for example, the blue
sub-pixel regions 21, the green sub-pixel regions 22, or the red
sub-pixel regions 23) in two adjacent pixel units is 2a.
FIG. 8 is a schematic view showing sub-pixel regions arranged in a
PenTile arrangement mode. Unlike the above-described RGB standard
arrangement mode, in the PenTile arrangement mode, each pixel unit
includes only two sub-pixel regions (for example, red and green
sub-pixel regions, or blue and green sub-pixel regions). As can be
seen by comparing FIG. 7 with FIG. 8, in the case where 3.times.3
pixels are needed to be displayed, nine sub-pixel regions need to
be included in one row of sub-pixels (horizontally arranged from
left to right in FIGS. 7 and 8) for the RGB standard arrangement
mode, while only six sub-pixel regions need to be included in one
row of sub-pixels for the PenTile arrangement mode. However, for
the RGB display mode, only if three primary colors are
simultaneously included, it can constitute all the colors, in other
words, only two colors cannot constitute all the colors. Therefore,
when actually displaying an image, one pixel unit arranged in the
PenTile arrangement mode needs to borrow another color of the pixel
unit adjacent thereto to constitute the three primary colors. In
other words, the PenTile arrangement mode of the RGB sub-pixel
regions reduces the number of sub-pixel regions by sharing the
sub-pixel regions with the adjacent pixel units. For the sake of
comparison, it is assumed that the pixel unit arranged in the
PenTile arrangement mode may also be regarded as a square having a
side length of 3a, and two sub-pixel regions in the pixel unit may
be regarded as a rectangle having a length of 3a and a width of a
and a rectangle having a length of 3a and a width of 2a,
respectively. In this case, there are two kinds of separation
distances between the closest sub-pixel regions having the same
illuminant color, that is, 2a (for example, the separation distance
between the green sub-pixel regions in FIG. 8) and 4a (for example,
the separation distance between the blue sub-pixel regions in FIG.
8). It can be seen that the separation distance between the
same-illuminant color sub-pixel regions arranged in the PenTile
arrangement mode is greater than the separation distance between
the same-illuminant color sub-pixel regions arranged in the
standard RGB arrangement mode. In general, the larger the
separation distance between the same-illuminant color sub-pixel
regions is, the worse the effect for displaying color separation
regions is.
Advantages of the pixel unit employing a one-surrounding-one
sub-pixel arrangement mode according to the embodiments of the
present disclosure will be described below by comparison.
Some embodiments of the present disclosure provide a display
substrate 200. The display substrate 200 includes: a base substrate
40; and a plurality of pixel units disposed in an array on the base
substrate 40. The pixel units may be the pixel units described in
any of the above embodiments.
FIGS. 9, 10, 11, and 12 illustrate four exemplary arrangements mode
of pixel units on a display substrate according to embodiments of
the present disclosure, respectively. In order to facilitate the
comparison with the standard RGB arrangement mode or the PenTile
arrangement mode, in FIGS. 9, 10, 11, and 12, each of the pixel
units 100a to 100f is regarded as a square having a side length of
3a. Assuming that the areas of the first sub-pixel region 10, the
second sub-pixel region 20, and the third sub-pixel region 30 are
equal such that illuminant areas of the various sub-pixel regions
having different illuminant colors are the same, the first
sub-pixel region 10 has a side length of 3.sup.1/2a (about 1.73a),
a side length of the outer side of the second sub-pixel region 20
is 6.sup.1/2a (about 2.45 a), and the third sub-pixel region 30 has
a side length of 3a.
In an embodiment of the present disclosure, the illuminant color of
the first sub-pixel region 10 of any one of two adjacent pixel
units is the same as the illuminant color of the third sub-pixel
region 30 of the other of the two adjacent pixel units. As an
example, the illuminant color of the second sub-pixel region 20 of
any one of the two adjacent pixel units is the same as the
illuminant color of the second sub-pixel region 20 of the other of
two adjacent pixel units. Specifically, as in the example of FIG.
9, the pixel unit 100b in FIG. 2 and the pixel unit 100f in FIG. 6
are alternately arranged on the display substrate. In this example,
the distance between the adjacent red sub-pixel regions is the
distance between the first sub-pixel region 10 in one pixel unit
and the third sub-pixel region 30 in another pixel unit adjacent
thereto. According to the above size assumption, the distance
between the adjacent red sub-pixel regions is
(3a-6.sup.1/2a)/2+(6.sup.1/2a-3.sup.1/2a)/2.apprxeq.0.64a.
Moreover, in this example, the distance between the adjacent green
sub-pixel regions is the distance between the second sub-pixel
region 20 in one pixel unit and the second sub-pixel region 20 in
another pixel unit adjacent thereto. According to the above size
assumption, the distance between the adjacent green sub-pixel
regions is (3a-6.sup.1/2a).apprxeq.0.55a. Similarly, the distance
between the adjacent blue sub-pixel regions is also the distance
between the first sub-pixel region 10 in one pixel unit and the
third sub-pixel region 30 in another pixel unit adjacent thereto.
According to the above size assumption, the distance between the
adjacent blue sub-pixel regions is also
(3a-6.sup.1/2a)/2+(6.sup.1/2a-3.sup.1/2a)/2.apprxeq.0.64a. It
should be noted that, although the alternate arrangement of the
pixel unit 100b in FIG. 2 and the pixel unit 100f in FIG. 6 on the
display substrate is illustrated in FIG. 9, the embodiments of the
present disclosure are not limited thereto, for example, it is
possible to adopt an alternate arrangement of the pixel unit 100a
in FIG. 1 and the pixel unit 100e in FIG. 5 or an alternate
arrangement of the pixel unit 100c in FIG. 3 and the pixel unit
100d in FIG. 4, to achieve the same effect.
As described above, for the standard RGB arrangement mode, the
distance between the same-illuminant color sub-pixel regions in
adjacent pixel units is 2a; for the PenTile arrangement mode, the
distance between the same-illuminant color sub-pixel regions in
adjacent pixel units is 2a or 4a. It can be seen that, in the case
where the areas of the various sub-pixel regions remain unchanged,
the separation distance between the same-illuminant color sub-pixel
regions in adjacent pixel units may be significantly reduced by the
arrangement mode of sub-pixels according to the above-described
embodiments of the present disclosure. This is advantageous for the
display of fine pictures and the display of color separation
regions.
In another embodiment of the present disclosure, in two adjacent
pixel units, the illuminant color of the first sub-pixel region 10
of the first pixel unit is the same as the illuminant color of the
second sub-pixel region 20 of the second pixel unit, the illuminant
color of the second sub-pixel region 20 of the first pixel unit is
the same as the illuminant color of the third sub-pixel region 30
of the second pixel unit, and the illuminant color of the third
sub-pixel region 30 of the first pixel unit is the same as the
illuminant color of the first sub-pixel region 10 of the second
pixel unit. FIG. 10 shows a specific example of a display substrate
having pixel units arranged in this way. In the example shown in
FIG. 10, the pixel unit 100a shown in FIG. 1, the pixel unit 100b
shown in FIG. 2, and the pixel unit 100c shown in FIG. 3 are
alternately arranged on the display substrate. In this example,
there are two cases. For the pixel unit 100a in the upper left
corner and the pixel unit 100b at the right side thereof, and the
pixel unit 100a in the upper left corner and the pixel unit 100c at
the lower side thereof, the distances between the same-illuminant
color sub-pixel regions in the adjacent pixel units need to be
considered independently.
In the former case, the pixel unit 100a in the upper left corner is
regarded as the first pixel unit, and the pixel unit 100b located
in the middle of the upper side is regarded as the second pixel
unit. The distance between adjacent red sub-pixel regions is the
distance between the second sub-pixel region 20 in the first pixel
unit and the third sub-pixel region 30 in the second pixel unit
adjacent thereto. According to the above size assumption, the
distance between the adjacent red sub-pixel regions is
(3a-6.sup.1/2a)/2.apprxeq.0.275a. Moreover, in this example, the
distance between adjacent green sub-pixel regions is the distance
between the first sub-pixel region 10 in the first pixel unit and
the second sub-pixel region 20 in the second pixel unit adjacent
thereto. According to the above size assumption, the distance
between the adjacent green sub-pixel regions is
(3a-3.sup.1/2a)/2+(3a-6.sup.1/2a)/2.apprxeq.0.91a. The distance
between adjacent blue sub-pixel regions is the distance between the
third sub-pixel region 30 in the first pixel unit and the first
sub-pixel region 10 in the second pixel unit adjacent thereto.
According to the above size assumption, the distance between the
adjacent blue sub-pixel regions is
(3a-3.sup.1/2a)/2.apprxeq.0.64a.
In the latter case, the pixel unit 100a in the upper left corner is
regarded as the second pixel unit, and the pixel unit 100c located
in the middle of the left side is regarded as the first pixel unit.
The distance between adjacent red sub-pixel regions is the distance
between the first sub-pixel region 10 in the first pixel unit and
the second sub-pixel region 20 in the second pixel unit adjacent
thereto. According to the above size assumption, the distance
between the adjacent red sub-pixel regions is
(3a-3.sup.1/2a)/2+(3a-6.sup.1/2a)/2.apprxeq.0.91a. Moreover, in
this example, the distance between adjacent green sub-pixel regions
is the distance between the third sub-pixel region 30 in the first
pixel unit and the first sub-pixel region 10 in the second pixel
unit adjacent thereto. According to the above size assumption, the
distance between the adjacent green sub-pixel regions is
(3a-3.sup.1/2a)/2.apprxeq.0.64a. The distance between adjacent blue
sub-pixel regions is the distance between the second sub-pixel
region 20 in the first pixel unit and the third sub-pixel region 30
in the second pixel unit adjacent thereto. According to the above
size assumption, the distance between the adjacent blue sub-pixel
regions is (3a-6.sup.1/2a)/2.apprxeq.0.275a.
In summary, in the example shown in FIG. 10, the separation
distances between the same-illuminant color sub-pixel regions in
adjacent pixel units do not exceed 0.91a, which is also
significantly less than that of the standard RGB arrangement mode
or the PenTile arrangement mode. It should be noted that, although
the alternate arrangement of the pixel unit 100a in FIG. 1, the
pixel unit 100b in FIG. 2, and the pixel unit 100c in FIG. 3 on the
display substrate is illustrated in FIG. 10, the embodiments of the
present disclosure are not limited thereto, and the sub-pixel
regions in the various pixel units may have other illuminant
colors. For example, it is possible to adopt a combination of the
pixel unit 100b in FIG. 2, the pixel unit 100c in FIG. 3, and the
pixel unit 100d in FIG. 4 on the display substrate, or a
combination of the pixel unit 100c in FIG. 3, the pixel unit 100d
in FIG. 4, and the pixel unit 100e in FIG. 5 on the display
substrate, or a combination of the pixel unit 100d in FIG. 4, the
pixel unit 100e in FIG. 5, and the pixel unit 100f in FIG. 6 on the
display substrate, or a combination of the pixel unit 100e in FIG.
5, the pixel unit 100f in FIG. 6, and the pixel unit 100a in FIG.
1, and so on, to achieve the same effect.
In the example shown in FIG. 11, the structure in the example shown
in FIG. 10 is simplified, only two kinds of pixel units, i.e., the
pixel units 100a in FIG. 1 and the pixel units 100b in FIG. 2, are
alternately arranged on the display substrate. According to the
above size assumption, the distance between adjacent red sub-pixel
regions can be calculated as (3a-6.sup.1/2a)/2.apprxeq.0.275a, the
distance between adjacent green sub-pixel regions can be calculated
as (3a-3.sup.1/2a)/2+(3a-6.sup.1/2a)/2.apprxeq.0.91a, and the
distance between adjacent blue sub-pixel regions can be calculated
as (3a-3.sup.1/2a)/2.apprxeq.0.64a. In the example shown in FIG.
11, the separation distances between the same-illuminant color
sub-pixel regions in adjacent pixel units also do not exceed 0.91a,
which is also significantly less than that of the standard RGB
arrangement mode or the PenTile arrangement mode. The embodiments
of the present disclosure are not limited to the arrangement of the
pixel units as shown in FIG. 11, the sub-pixel regions in the
various pixel units may have other illumination colors, for
example, it is possible to adopt a combination of the pixel unit
100b in FIG. 2 and the pixel unit 100c in FIG. 3 on the display
substrate, or a combination of the pixel unit 100c in FIG. 3 and
the pixel unit 100a in FIG. 1 on the display substrate, or a
combination of the pixel unit 100d in FIG. 4 and the pixel unit
100e in FIG. 5 on the display substrate, or a combination of the
pixel unit 100e in FIG. 5 and the pixel unit 100f in FIG. 6, or a
combination of the pixel unit 100d in FIG. 4 and the pixel unit
100f in FIG. 6, and so on, to achieve the same effect.
In another embodiment of the present disclosure, in two adjacent
pixel units, the first sub-pixel regions 10 each have a first
illuminant color, the second sub-pixel regions 20 each have a
second illuminant color, and the third sub-pixel regions 30 each
have a third illuminant color. FIG. 12 shows a specific example. In
the example shown in FIG. 12, only one kind of pixel units, that
is, the pixel units 100a as shown in FIG. 1 is arranged on the
display substrate. In this example, the distance between adjacent
green sub-pixel regions is the distance between the first sub-pixel
region 10 in one pixel unit and the first sub-pixel region 10 in
another pixel unit adjacent thereto. According to the above size
assumption, the distance between the adjacent green sub-pixel
regions is (3a-3.sup.1/2a).apprxeq.1.27a. Moreover, in this
example, the distance between adjacent red sub-pixel regions is the
distance between the second sub-pixel region 20 in one pixel unit
and the second sub-pixel region 20 in another pixel unit adjacent
thereto. According to the above size assumption, the distance
between the adjacent red sub-pixel regions is
(3a-6.sup.1/2a).apprxeq.0.55a. The distance between adjacent blue
sub-pixel regions is the distance between the third sub-pixel
region 30 in one pixel unit and the third sub-pixel region 30 in
another pixel unit adjacent thereto. According to the above size
assumption, the distance between the adjacent blue sub-pixel
regions is approximately zero. In the example shown in FIG. 12, the
separation distances between the same-illuminant color sub-pixel
regions in adjacent pixel units do not exceed 1.27a, which is also
significantly less than that of the standard RGB arrangement mode
or the PenTile arrangement mode. It should be noted that the pixel
units 100a shown in FIG. 12 may be replaced by any of the pixel
units shown in FIGS. 2 to 6 described above to achieve the same
effect.
In the example shown in FIG. 12, the minimum repetitive unit of the
pixel units includes only one pixel unit. In the examples shown in
FIGS. 9 and 11, the minimum repetitive unit of the pixel units
includes four pixel units (as indicated by the dashed box). In the
example shown in FIG. 10, the minimum repetitive unit of the pixel
units includes nine pixel units as shown. As can be seen from the
above description, the maximum value of the separation distance
between the same-illuminant color sub-pixel regions in adjacent
pixel units on the display substrate in the example shown in FIG. 9
is less than those in the other examples shown in FIGS. 10 to 12,
and therefore the display effect is better.
In the examples shown in FIGS. 9 to 12 described above, the areas
of the various sub-pixel regions in the same pixel unit are all
equal. However, the embodiments of the present disclosure are not
limited thereto, for example, the area of one certain sub-pixel
region in the same pixel unit may be less than the areas of other
sub-pixel regions. FIG. 13 shows a specific example. In the example
of FIG. 13, the area of the second sub-pixel region is equal to the
area of the third sub-pixel region, but the area of the first
sub-pixel region is half of the area of any of the second sub-pixel
region and the third sub-pixel region. The single pixel unit can
still be regarded as a square having a side length of 3a, then the
first sub-pixel region 10 has a side length of 3*5.sup.(-1/2)a
(about 1.34a), a side length of the outer side of the second
sub-pixel region 20 is 3*0.6.sup.1/2a (about 2.32a), and the third
sub-pixel region 30 has a side length of 3a. For example, the
illuminant color of the first sub-pixel region 10 is green, the
illuminant color of the second sub-pixel region 20 is red, and the
illuminant color of the third sub-pixel region 30 is blue. By means
of setting the area of the red sub-pixel region and the area of the
blue sub-pixel region to be twice the area of the green sub-pixel
region, it is advantageous for increasing the color temperature and
increasing the visual brightness.
FIG. 13 shows that all the pixel units on the display substrate are
the pixel units as described above. The distance between adjacent
green sub-pixel regions is (3a-3*5.sup.(-1/2)a).apprxeq.1.66a, the
distance between adjacent red sub-pixel regions is
(3a-3*0.6.sup.1/2a).apprxeq.0.68a, and the distance between
adjacent blue sub-pixel regions is approximately zero. It can be
seen that in the example shown in FIG. 13, the separation distances
between the same-illuminant color sub-pixel regions in adjacent
pixel units do not exceed 1.66a, which is also significantly less
than that of the standard RGB arrangement mode or the PenTile
arrangement mode.
In the example of the standard RGB arrangement mode shown in FIG.
7, the single pixel unit (including R, G, B sub-pixel regions) has
a width of 3a, the same-illuminant color sub-pixel regions in two
adjacent pixel units are separated by two sub-pixel regions, that
is, the separation distance between the same-illuminant color
sub-pixel regions in the two adjacent pixel units is a sum of
widths of two sub-pixel regions, 2a, or in other words, the
separation distance between the same-illuminant color sub-pixel
regions in the two adjacent pixel units is two-thirds of the width
of the single pixel unit. Similarly, in the example of the PenTile
arrangement mode shown in FIG. 8, the single pixel unit (including
R, G sub-pixel regions or B, G sub-pixel regions) has a width of
3a, the separation distance between the same-illuminant color
sub-pixel regions in the two adjacent pixel units is 2a (for
example the separation distance between adjacent green sub-pixels)
or 4a (for example the separation distance between adjacent blue or
red sub-pixels), which is also not less than two-thirds of the
width of the single pixel unit.
In some embodiments of the present disclosure, the separation
distances between the same-illuminant color sub-pixel regions in
two adjacent pixel units may all be less than two-thirds of the
width of any one of the pixel units, for example, the examples
shown in FIG. 9 to FIG. 13 are the case. A detailed description
will be given by taking FIG. 13 as an example. As described above,
the shape of each pixel unit in FIG. 13 is a square having a side
length of 3a, and therefore the width w of the single pixel unit is
3a. The separation distance between the sub-pixel regions refers to
the distance between the edges of the sub-pixel regions facing to
each other. For example, in all the pixel units in FIG. 13, the
first sub-pixel regions are all green sub-pixel regions, the second
sub-pixel regions are all red sub-pixel regions, and the third
sub-pixel regions are all blue sub-pixel regions. Therefore, the
separation distance between the sub-pixel regions having the same
green illuminant color in two adjacent pixel units (for example,
the pixel unit in the upper left corner and the pixel unit in the
middle of the upper side) is the distance between edges of the
first sub-pixel regions of these two pixel unit facing to each
other (for example, the distance from a right edge of the first
sub-pixel region of the pixel unit in the upper left corner to a
left edge of the first sub-pixel region of the pixel unit in the
middle of the upper side), which is marked with a value of 1.66a.
Similarly, the separation distance between the sub-pixel regions
having the same red illuminant color in two adjacent pixel units
(for example, the pixel unit in the upper left corner and the pixel
unit in the middle of the upper side) is the distance between edges
of the second sub-pixel regions of these two pixel unit facing to
each other (for example, the distance from a right edge of the
second sub-pixel region of the pixel unit in the upper left corner
to a left edge of the second sub-pixel region of the pixel unit in
the middle of the upper side), which is marked with a value of
0.68a. The distance between the sub-pixel regions having the same
blue illuminant color in the pixel unit in the upper left corner
and the pixel unit in the middle of the upper side in FIG. 13 can
be negligible, because the right edge of the third sub-pixel region
of the pixel unit in the upper left corner and the left edges of
the third sub-pixel region of the pixel unit in the middle of the
upper side are adjacent to each other. It can be seen that, in the
example shown in FIG. 13, the separation distances between the
same-illuminant color sub-pixel regions in two adjacent pixel units
are at most not more than 1.66a, and are less than two-thirds of
the width of any one of the pixel units (2a). This can ensure that
the separation distances between the same-illuminant color
sub-pixel regions in two adjacent pixel units are less than that of
the standard RGB arrangement mode or the PenTile arrangement mode,
to obtain a more delicate display effect than them. Thus, in order
to obtain better definition when displaying a fine picture, as an
example, the separation distances between the same-illuminant color
sub-pixel regions in two adjacent pixel units may each be less than
one-third of the width of any one of the pixel units. For example,
the examples shown in FIGS. 9 to 11 described above are the case.
This can further improve the display effect. For example, in FIG.
9, in the pixel unit 100b in the upper left corner, the first
sub-pixel region is a blue sub-pixel region, the second sub-pixel
region is a green sub-pixel region, and the third sub-pixel region
is a red sub-pixel region. In the pixel unit 100f in the middle of
the upper side in FIG. 9, the first sub-pixel region is a red
sub-pixel region, the second sub-pixel region is a green sub-pixel
region, and the third sub-pixel region is a blue sub-pixel region.
Therefore, the separation distance between the sub-pixel regions
having the same blue illuminant color in the two adjacent pixel
units 100b and 100f is 0.64a, the separation distance between the
sub-pixel regions having the same green illuminant color in the two
adjacent pixel units 100b and 100f is 0.55a, and the separation
distance between the sub-pixel regions having the same red
illuminant color in the two adjacent pixel units 100b and 100f is
0.64a. It can be seen that, in the example shown in FIG. 9, the
separation distances between the same-illuminant color sub-pixel
regions in two adjacent pixel units are at most not more than
0.64a, and are less than one-third of the width of the single pixel
unit (1a).
When the display substrate according to the embodiments of the
present disclosure performs a black and white display or a pure
color display, the separation distance between adjacent
same-illuminant color sub-pixels is less than that of the standard
RGB arrangement mode or the PenTile arrangement mode. Therefore, in
the case where the product resolution is high, naked eyes generally
recognize that the edge of the color separation region is linear
and non-wavy. Moreover, a fine picture can also be displayed
clearly when displaying it.
When manufacturing the pixel unit according to the embodiments of
the present disclosure, it is only necessary to use a corresponding
mask pattern manufactured in terms of a designed arrangement and
manufacture it by using a conventional pixel unit manufacturing
process.
The embodiments of the present disclosure are not limited to the
specific embodiments described above, and those skilled in the art
can determine the sizes and the illuminant colors of the various
sub-pixel regions in the pixel units and the arrangement of the
pixel units as needed.
FIG. 14 is an exemplary partial cross-sectional view of a display
substrate according to an embodiment of the present disclosure. The
display substrate 200 includes a base substrate 40 and a plurality
of pixel units disposed on the base substrate 40. The portion of
the display substrate shown in FIG. 14 corresponds to the pixel
unit 100a in FIG. 1. The pixel unit 100a includes a first sub-pixel
region 10, a second sub-pixel region 20, and a third sub-pixel
region 30. In view of the structure of one-surrounding-one
arrangement or nested ring, the second sub-pixel region 20 is
disposed around the periphery of the first sub-pixel region 10 and
the third sub-pixel region 30 is disposed around the periphery of
the second sub-pixel region 20. In an example, the pixel unit 100a
includes an organic light emitting diode 80 for forming respective
sub-pixel regions. Each organic light emitting diode 80 may
include, for example, an anode 81, a cathode 82, and organic
luminescent material layers 83 between the anode 81 and the cathode
82. As an example, the organic light emitting diode 80 may further
include a hole injection layer, a hole transport layer, an electron
transport layer, an electron injection layer, and the like to
improve luminous efficiency. However, the embodiments of the
present disclosure are not limited thereto, and other well-known
light emitting structures (for example, well-known OLED light
emitting structures) may also be employed. As an example, the
organic luminescent material layers 83 corresponding to different
sub-pixel regions may be separated by isolation layers 84, and the
cathode 82 corresponding to different sub-pixel regions may be
separated by isolation columns 85. In order to prevent short
circuits between adjacent sub-pixel regions, the isolation columns
85 may be formed in an inverted trapezoidal shape. In some
embodiments of the present disclosure, the base substrate may be a
substrate made of a transparent material such as glass, resin, or
the like for supporting the light emitting device. As an example, a
first color layer pattern 91, a second color layer pattern 92, and
a third color layer pattern 93 are formed from organic luminescent
material layers 83 of different colors in the first sub-pixel
region 10, the second sub-pixel region 20, and the third sub-pixel
region 30, respectively. The first color layer pattern 91, the
second color layer pattern 92, and the third color layer pattern 93
may be used to form the illuminant colors of the respective
sub-pixel regions.
Although the embodiments of the present disclosure have been
described above by taking pixel units of RGB three primary colors
as an example, it should be understood by those skilled in the art
that the embodiments of the present disclosure are not limited
thereto. The sub-pixel regions in the pixel unit may have any other
illuminant colors, for example yellow, and the number of the
sub-pixel regions in the pixel unit is not limited to three, for
example, four or more sub-pixel regions may be included in a single
pixel unit.
Although the embodiments of the present disclosure have been
described above by taking a first sub-pixel region of a square as
an example, it should be understood by those skilled in the art
that the embodiments of the present disclosure are not limited
thereto. The first sub-pixel region may have other shapes, such as
a rectangle, a circle, a diamond, a hexagon, or even an irregular
shape.
FIG. 14 merely shows an example of a display substrate according to
an embodiment of the present disclosure. However, the embodiments
of the present disclosure are not limited thereto, and other
structures known in the related art for generating an OLED display
substrate may also be employed, for example, a monochromatic OLED
structure or a white light OLED structure combined with a color
filter, or the like. Moreover, the embodiments of the present
disclosure are not limited to an OLED pixel unit and a display
substrate. The present disclosure is intended to provide a novel
arrangement mode of sub-pixels in a pixel unit and an arrangement
of pixel units on a display substrate, and may also be applied to
the display devices other than the OLED display device, such as a
quantum dot light emitting display device, an inorganic light
emitting diode display device, a liquid crystal display device, and
the like.
Embodiments of the present disclosure also provide a method for
manufacturing a display substrate S100. As shown in FIG. 15, the
method S100 includes:
Step S10: providing a base substrate; and
Step S20: forming a plurality of pixel units arranged in an array
on the base substrate.
As described above, each of the pixel units includes: a first
sub-pixel region; a second sub-pixel region located at a periphery
of the first sub-pixel region and surrounding the first sub-pixel
region; and a third sub-pixel region located at a periphery of the
second sub-pixel region and surrounding the second sub-pixel
region.
In some embodiments, the above step S20 may include:
forming a first color layer pattern 91 in the first sub-pixel
region 10, a second color layer pattern 92 in the second sub-pixel
region 20, and a third color layer pattern 93 in the third
sub-pixel region 30 on the base substrate, respectively. In each
pixel unit, the second color layer pattern surrounds the first
color layer pattern, and the third color layer pattern surrounds
the second color layer pattern.
As described above, the first sub-pixel region 10, the second
sub-pixel region 20, and the third sub-pixel region 30 may have
different illuminant colors from each other. Their illuminant
colors may be provided by the first color layer pattern 91, the
second color layer pattern 92, and the third color layer pattern
93, respectively. Herein, the shape and position of the first color
layer pattern 91 may correspond to the first sub-pixel region 10,
that is, the first color layer pattern 91 is located in the first
sub-pixel region 10 and has a shape that is generally the same as
that of the first sub-pixel region 10. Likewise, the shapes and
positions of the second color layer pattern 92 and the third color
layer pattern 93 may correspond to the second sub-pixel region 20
and the third sub-pixel region 30, respectively. Therefore, in the
same pixel unit, the second color layer pattern 92 would be located
at the periphery of the first color layer pattern 91 and surround
the first color layer pattern 91, and the third color layer pattern
93 would be located at the periphery of the second color layer
pattern 92 and surround the second color layer pattern 92.
As an example, when the illuminant colors of the first sub-pixel
region 10, the second sub-pixel region 20, and the third sub-pixel
region 30 are determined by the illuminant colors of the
luminescent material layers (for example, each sub-pixel region
corresponds to a monochromatic OLED), the first color layer
pattern, the second color layer pattern, and the third color layer
pattern may be formed of luminescent material layers (for example,
organic or inorganic luminescent material layers) of different
colors, respectively. When the illuminant colors of the first
sub-pixel region 10, the second sub-pixel region 20, and the third
sub-pixel region 30 are determined by the colors of the color
filter layers (for example, using a white light OLED structure
combined with color filter layers), the first color layer pattern
91, the second color layer pattern 92, and the third color layer
pattern 93 may be formed of color filter layers of different
colors, respectively. The first color layer pattern 91, the second
color layer pattern 92, and the third color layer pattern 93 may be
manufactured by a process such as evaporation, inkjet printing,
photolithography, and those skilled in the art can choose a
specific process according to the property of the material, the
manufacturing cost, and the like.
It should be understood by those skilled in the art that, in
addition to the color layer patterns described above, it is also
necessary to provide known film layer structures such as a cathode,
an anode, an insulating layer or the like on the display substrate
to achieve the necessary functions. These film layers may be
selected as desired and manufactured by a manufacturing process
known in the related art. Since only the known technologies in the
art are involved, these film layer structures and their
manufacturing processes will not be described in detail herein.
The present disclosure has been described with reference to the
accompanying drawings, but the embodiments involved in the drawings
are only illustrative of the present disclosure and should not be
construed as limiting the present disclosure. The dimension scales
in the drawings are merely illustrative and should not be construed
as limiting the present disclosure.
The above-described embodiments are merely illustrative of the
principle and construction of the present disclosure, and are not
intended to limit the present disclosure. it should be appreciated
by those skilled in the art that any changes or improvements to the
present disclosure without departing from the general concept of
the present disclosure fall within the scope of the present
disclosure. The scope of the present disclosure should be defined
by the claim set of the present disclosure.
* * * * *