U.S. patent application number 16/410060 was filed with the patent office on 2020-04-30 for display substrate, method of manufacturing the same, display panel, and display apparatus.
This patent application is currently assigned to Chengdu BOE Optoelectronics Technology Co., Ltd.. The applicant listed for this patent is Chengdu BOE Optoelectronics Technology Co., Ltd. BOE Technology Group Co., Ltd.. Invention is credited to Zhiliang Jiang, Ming Mao, Li Song, Ge Wang, Pan Zhao.
Application Number | 20200135834 16/410060 |
Document ID | / |
Family ID | 66163679 |
Filed Date | 2020-04-30 |
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United States Patent
Application |
20200135834 |
Kind Code |
A1 |
Mao; Ming ; et al. |
April 30, 2020 |
DISPLAY SUBSTRATE, METHOD OF MANUFACTURING THE SAME, DISPLAY PANEL,
AND DISPLAY APPARATUS
Abstract
A display substrate, a method of manufacturing the same, a
display panel, and a display apparatus are provided. In one
embodiment, a display substrate includes: a base substrate; a
plurality of lead wires and a barrier on the base substrate, the
plurality of lead wires being separated from one another to form a
concave between every two adjacent ones of the plurality of lead
wires; and a cover layer covering over the plurality of lead wires
and the barrier; wherein the plurality of lead wires are insulated
from the barrier, the plurality of lead wires are insulated from
the cover layer, the plurality of lead wires are between the base
substrate and the cover layer, the barrier is between the plurality
of lead wires and the cover layer, and the barrier is formed at
least at the concave between at least two of the plurality of lead
wires to block the concave.
Inventors: |
Mao; Ming; (Beijing, CN)
; Zhao; Pan; (Beijing, CN) ; Song; Li;
(Beijing, CN) ; Wang; Ge; (Beijing, CN) ;
Jiang; Zhiliang; (Beijing, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Chengdu BOE Optoelectronics Technology Co., Ltd.
BOE Technology Group Co., Ltd. |
Chengdu
Beijing |
|
CN
CN |
|
|
Assignee: |
Chengdu BOE Optoelectronics
Technology Co., Ltd.
Chengdu
CN
BOE Technology Group Co., Ltd.
Beijing
CN
|
Family ID: |
66163679 |
Appl. No.: |
16/410060 |
Filed: |
May 13, 2019 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H01L 2224/47 20130101;
H01L 51/56 20130101; G02F 1/13452 20130101; H01L 2224/45686
20130101; H01L 51/5237 20130101; H01L 27/3276 20130101; G02F 1/1345
20130101; H01L 51/5253 20130101 |
International
Class: |
H01L 27/32 20060101
H01L027/32; H01L 51/52 20060101 H01L051/52; H01L 51/56 20060101
H01L051/56 |
Foreign Application Data
Date |
Code |
Application Number |
Oct 31, 2018 |
CN |
201821790160.0 |
Claims
1. A display substrate comprising: a base substrate; a plurality of
lead wires and a plurality of barriers on the base substrate, the
plurality of lead wires being separated from one another to form a
concave between every two adjacent ones of the plurality of lead
wires; and a cover layer covering over the plurality of lead wires
and the plurality of barriers; wherein the plurality of lead wires
are insulated from the plurality of barriers, the plurality of lead
wires are insulated from the cover layer, the plurality of lead
wires are between the base substrate and the cover layer, the
plurality of barriers are between the plurality of lead wires and
the cover layer, and each of the plurality of barriers is formed at
least at the concave between at least two of the plurality of lead
wires to block the concave; wherein an orthographic projection of
each of the plurality of barriers on the base substrate overlaps
with an orthographic projection of the at least two of the
plurality of lead wires on the base substrate.
2. (canceled)
3. (canceled)
4. The display substrate of claim 1, wherein the plurality of lead
wires are divided into a plurality of lead wire groups arranged
successively on the base substrate in a direction parallel to a
plane where the base substrate is located, and correspondingly the
plurality of barriers are divided into a plurality of barrier
groups, each barrier of each of the plurality of barrier groups is
formed at least at the concave between at least two lead wires of
one, corresponding to the each of the plurality of barrier groups,
of the plurality of lead wire groups, and an orthographic
projection of each barrier of each of the plurality of barrier
groups on the base substrate overlaps with an orthographic
projection of at least two lead wires of one, corresponding to the
each of the plurality of barrier groups, of the plurality of lead
wire groups on the base substrate.
5. The display substrate of claim 1, wherein an orthographic
projection of each of the plurality of lead wires on the base
substrate overlaps with an orthographic projection of at least one
of the barriers on the base substrate.
6. The display substrate of claim 1, wherein a height of the
barrier on the base substrate is greater than or equal to a height
of each of the plurality of lead wires on the base substrate.
7. The display substrate of claim 1, wherein the barrier is in a
strip shape, an orthographic projection of the barrier on the base
substrate intersects with an orthographic projection of one,
corresponding to the barrier, of the plurality of lead wires on the
base substrate, and the one, corresponding to the barrier, of the
plurality of lead wires is a lead wire of which the orthographic
projection on the base substrate overlaps with the orthographic
projection of the barrier on the base substrate.
8. The display substrate of claim 7, wherein the orthographic
projection of the barrier on the base substrate has a
straight-linear shape, a curvilinear shape or a zigzag shape.
9. The display substrate of claim 1, further comprising: a
ring-shaped wall structure between the plurality of lead wires and
the cover layer; wherein the base substrate comprises a display
region and a non-display region surrounding the display region,
both the plurality of lead wires and the barrier are within the
non-display region, and both the display region and the barrier of
the base substrate are surrounded by the ring-shaped wall
structure.
10. The display substrate of claim 9, wherein the ring-shaped wall
structure comprises a first ring-shaped wall substructure and a
second ring-shaped wall substructure surrounding the first
ring-shaped wall substructure, and both the display region and the
barrier of the base substrate are surrounded by the first
ring-shaped wall substructure.
11. The display substrate of claim 1, wherein the display substrate
comprises an OLED display substrate formed with a pixel circuit,
the pixel circuit comprises a gate electrode, a power terminal, a
gate electrode signal line connected to the gate electrode, and a
power terminal signal line connected to the power terminal, and the
plurality of lead wires comprise a gate electrode lead wire
connected to the gate electrode signal line and a power terminal
lead wire connected to the power terminal signal line.
12. The display substrate of claim 1, wherein the display substrate
comprises a flexible display substrate.
13. The display substrate of claim 1, wherein the cover layer
comprises a package layer.
14. A method of manufacturing the display substrate of claim 1, the
method comprising: providing the base substrate; forming the
plurality of lead wires on the base substrate, the plurality of
lead wires being separated from one another to form a concave
between every two adjacent ones of the plurality of lead wires;
forming the barrier on the base substrate, the barrier being formed
at least at the concave between at least two of the plurality of
lead wires to block the concave; and forming the cover layer by
spraying a solution for preparing the cover layer on the plurality
of lead wires and the barrier.
15. A display panel comprising: the display substrate of claim
1.
16. A display apparatus comprising: the display panel of claim 15.
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application claims the benefit of Chinese Patent
Application No. 201821790160.0, filed with the State Intellectual
Property Office of China on Oct. 31, 2018, the whole disclosure of
which is incorporated herein by reference.
TECHNICAL FIELD
[0002] The present disclosure relates to a field of display
technology, and in particular, to a display substrate, a method of
manufacturing the same, a display panel, and a display
apparatus.
BACKGROUND
[0003] With the development of technology, the display apparatus is
more and more widely used. The display apparatus includes a display
panel, and the display panel includes a display substrate.
SUMMARY
[0004] According to an aspect of embodiments of the present
disclosure, there is provided a display substrate comprising:
[0005] a base substrate;
[0006] a plurality of lead wires and a barrier on the base
substrate, the plurality of lead wires being separated from one
another to form a concave between every two adjacent ones of the
plurality of lead wires; and
[0007] a cover layer covering over the plurality of lead wires and
the barrier;
[0008] wherein the plurality of lead wires are insulated from the
barrier, the plurality of lead wires are insulated from the cover
layer, the plurality of lead wires are between the base substrate
and the cover layer, the barrier is between the plurality of lead
wires and the cover layer, and the barrier is formed at least at
the concave between at least two of the plurality of lead wires to
block the concave.
[0009] In some embodiments, an orthographic projection of the
barrier on the base substrate overlaps with an orthographic
projection of the at least two of the plurality of lead wires on
the base substrate.
[0010] In some embodiments, the display substrate comprises a
plurality of said barriers, wherein an orthographic projection of
each of the plurality of barriers on the base substrate overlaps
with an orthographic projection of the at least two of the
plurality of lead wires on the base substrate.
[0011] In some embodiments, the plurality of lead wires are divided
into a plurality of lead wire groups arranged successively on the
base substrate in a direction parallel to a plane where the base
substrate is located, and correspondingly the plurality of barriers
are divided into a plurality of barrier groups,
[0012] each barrier of each of the plurality of barrier groups is
formed at least at the concave between at least two lead wires of
one, corresponding to the each of the plurality of barrier groups,
of the plurality of lead wire groups, and
[0013] an orthographic projection of each barrier of each of the
plurality of barrier groups on the base substrate overlaps with an
orthographic projection of at least two lead wires of one,
corresponding to the each of the plurality of barrier groups, of
the plurality of lead wire groups on the base substrate.
[0014] In some embodiments, an orthographic projection of each of
the plurality of lead wires on the base substrate overlaps with an
orthographic projection of at least one of the barriers on the base
substrate.
[0015] In some embodiments, a height of the barrier on the base
substrate is greater than or equal to a height of each of the
plurality of lead wires on the base substrate.
[0016] In some embodiments, the barrier is in a strip shape, an
orthographic projection of the barrier on the base substrate
intersects with an orthographic projection of one, corresponding to
the barrier, of the plurality of lead wires on the base substrate,
and the one, corresponding to the barrier, of the plurality of lead
wires is a lead wire of which the orthographic projection on the
base substrate overlaps with the orthographic projection of the
barrier on the base substrate.
[0017] In some embodiments, the orthographic projection of the
barrier on the base substrate has a straight-linear shape, a
curvilinear shape or a zigzag shape.
[0018] In some embodiments, the display substrate can further
comprise: a ring-shaped wall structure between the plurality of
lead wires and the cover layer;
[0019] wherein the base substrate comprises a display region and a
non-display region surrounding the display region, both the
plurality of lead wires and the barrier are within the non-display
region, and both the display region and the barrier of the base
substrate are surrounded by the ring-shaped wall structure.
[0020] In some embodiments, the ring-shaped wall structure further
comprises a first ring-shaped wall substructure and a second
ring-shaped wall substructure surrounding the first ring-shaped
wall substructure, and both the display region and the barrier of
the base substrate are surrounded by the first ring-shaped wall
substructure.
[0021] In some embodiments, the display substrate comprises an OLED
display substrate formed with a pixel circuit, the pixel circuit
comprises a gate electrode, a power terminal, a gate electrode
signal line connected to the gate electrode, and a power terminal
signal line connected to the power terminal, and the plurality of
lead wires comprise a gate electrode lead wire connected to the
gate electrode signal line and a power terminal lead wire connected
to the power terminal signal line.
[0022] In some embodiments, the display substrate comprises a
flexible display substrate.
[0023] In some embodiments, the cover layer comprises a package
layer.
[0024] According to another aspect of embodiments of the present
disclosure, there is provided a method of manufacturing the display
substrate of any one of the abovementioned embodiments, and the
method comprises:
[0025] providing the base substrate;
[0026] forming the plurality of lead wires on the base substrate,
the plurality of lead wires being separated from one another to
form a concave between every two adjacent ones of the plurality of
lead wires;
[0027] forming the barrier on the base substrate, the barrier being
formed at least at the concave between at least two of the
plurality of lead wires to block the concave; and
[0028] forming the cover layer by spraying a solution for preparing
the cover layer on the plurality of lead wires and the barrier.
[0029] According to yet another aspect of embodiments of the
present disclosure, there is provided a display panel comprising:
the display substrate of any one of the abovementioned
embodiments.
[0030] According to still another aspect of embodiments of the
present disclosure, there is provided a display apparatus
comprising: the display panel of any one of the abovementioned
embodiments.
[0031] It should be understood that, the above general description
and the following detailed description are merely exemplary and are
not intended to limit the present disclosure.
BRIEF DESCRIPTION OF THE DRAWINGS
[0032] In order to describe embodiments of the present disclosure
more clearly, accompanying drawings required for describing the
embodiments will be simply explained as below. Apparently, the
accompanying drawings for the following description are only some
embodiments of the present disclosure. Those skilled in the art
also could derive other accompanying drawings from these
accompanying drawings without making a creative work.
[0033] FIG. 1 is a schematic view showing a structure of a display
substrate according to an embodiment of the present disclosure;
[0034] FIG. 2 is a sectional schematic view taken along a line A-A
of FIG. 1;
[0035] FIG. 3 is a schematic view showing a structure of a display
substrate according to another embodiment of the present
disclosure;
[0036] FIG. 4 is a schematic view showing a structure of a display
substrate according to a further embodiment of the present
disclosure;
[0037] FIG. 5 is a schematic view showing a structure of a display
substrate according to a yet further embodiment of the present
disclosure;
[0038] FIG. 6 is a schematic view showing a structure of a display
substrate according to a still further embodiment of the present
disclosure;
[0039] FIG. 7 is a sectional schematic view taken along a line B-B
of FIG. 6; and
[0040] FIG. 8 is a flow diagram of a method of manufacturing a
display substrate according to an embodiment of the present
disclosure.
[0041] The accompanying drawings herein are incorporated in and
constitute a part of the description, illustrate the embodiments of
the present disclosure, and are used together with the description
to explain the principles and spirit of the present disclosure.
DETAILED DESCRIPTION
[0042] In order to make the objects, technical solutions and
advantages of the present disclosure more apparent, the present
disclosure will be further described in detail below with reference
to the accompanying drawings. Apparently, the described embodiments
are some of the embodiments of the present disclosure rather than
all of the embodiments of the present disclosure. All other
embodiments derived by those skilled in the art based on the
embodiments of the present disclosure without making a creative
work shall fall within the protection scope of the present
disclosure.
[0043] A display substrate includes a base substrate, lead wires
and a cover layer. The base substrate includes a display region and
a non-display region, the lead wires are within the non-display
region and are configured to connect electronic devices in the
display region with a circuit board outside the display substrate,
and the cover layer covers the display region and the lead
wires.
[0044] In the related art, in the process of preparing a display
substrate, the lead wires are formed on a base substrate, and then
a solution for preparing a cover layer is sprayed on the base
substrate on which the lead wires are formed. The cover layer is
formed after the solution is dried.
[0045] However, since the display substrate includes a plurality of
lead wires and concaves are formed between these lead wires. During
the spraying of the solution for preparing the cover layer, a
portion of the solution may flow out of the base substrate along
the concaves between these lead wires, causing leakage of the
solution, thereby resulting in a poor coverage effect of the cover
layer formed after the solution is dried.
[0046] According to embodiments of the present disclosure, there is
provided a display substrate. In the process of preparing the
display substrate, leakage of the solution is less when a solution
for preparing a cover layer is sprayed on a base substrate, thereby
achieving a better coverage effect of the cover layer formed after
the solution is dried.
[0047] FIG. 1 is a schematic view showing a structure of a display
substrate according to an embodiment of the present disclosure, and
FIG. 2 is a sectional schematic view taken along a line A-A of FIG.
1. It should be noted that, FIG. 1 shows a top view of the display
substrate. Referring to FIG. 1 and FIG. 2, the display substrate 10
can include: a base substrate 100, a plurality of lead wires 01 and
a barrier 02 on the base substrate 100, and a cover layer 03. The
plurality of lead wires 01 are separated from one another to form a
concave 09 between every two adjacent ones of the plurality of lead
wires 01. The cover layer 03 covers over the plurality of lead
wires 01 and the barrier 02.
[0048] The plurality of lead wires 01 are insulated from the
barrier 02, and the plurality of lead wires 01 are insulated from
the cover layer 03. The plurality of lead wires 01 are between the
base substrate 100 and the cover layer 03, the barrier 02 is
between the plurality of lead wires 01 and the cover layer 03, and
the barrier 02 is formed at least at the concave 09 between at
least two of the plurality of lead wires 01 to block the concave
09.
[0049] Moreover, an orthographic projection of the barrier 02 on
the base substrate 100 overlaps with an orthographic projection of
the at least two of the plurality of lead wires 01 on the base
substrate 100.
[0050] It should be noted that, FIG. 1 shows an embodiment in which
the display substrate 10 includes only one barrier 02. In some
embodiments, the display substrate 10 can include other numbers
(such as three) of the barriers 102. The number of the barriers can
be set according to actual requirements, and it is not limited
according to embodiments of the present disclosure. Moreover, FIG.
1 shows an embodiment in which the barrier 02 is formed at one
concave 09 between two lead wires 01. In some embodiments, the
barrier 02 may be formed over other numbers (such as two) of the
concaves 09 between other numbers (such as three) of the lead wires
01. The numbers of the concaves and the lead wires over which one
barrier is formed can be set according to actual requirements, and
they are not limited according to embodiments of the present
disclosure. In addition, FIG. 1 shows an embodiment in which an
orthographic projection of the barrier 02 on the base substrate 100
overlaps with an orthographic projection of two lead wires 01 on
the base substrate 100. In some embodiments, the orthographic
projection of the barrier 02 on the base substrate 100 may overlap
with an orthographic projection of other numbers (such as three) of
the lead wires 01 on the base substrate 100. The number of the lead
wires of which the orthographic projection on the base substrate
100 overlaps with the orthographic projection of one barrier on the
base substrate can be set according to actual requirements, and it
is not limited according to embodiments of the present
disclosure.
[0051] Accordingly, in the display substrate according to the
embodiments of the present disclosure, the barrier is located
between the plurality of lead wires and the cover layer, and the
barrier is formed at least at the concave between at least two of
the plurality of the lead wires to block the concave. Therefore, in
the process of preparing the display substrate, when the solution
for preparing the cover layer is sprayed on the base substrate
where the plurality of lead wires and the barrier are formed, the
barrier can block the solution from flowing out of the base
substrate along the concave formed between at least two lead wires,
thereby reducing the amount of leakage of the solution and
improving the coverage effect of the cover layer formed after the
solution is dried.
[0052] Continuing with FIG. 1 and FIG. 2, the display substrate 10
may be an organic light-emitting diode (OLED) display substrate,
the cover layer 03 may be a package layer, and the package layer
may be used for packaging the display region and a portion of the
non-display region of the base substrate 100.
[0053] The display substrate 10 may further include a display
structure F1, and an area where the display structure F1 is located
is the display region of the base substrate 100. The display
structure F1 may include a plurality of pixel units and signal
lines connecting to the pixel units. The display structure F1 may
be located between the base substrate 100 and the cover layer 03,
and the plurality of lead wires 01 are configured to connect the
electronic devices (such as thin film transistors or electrodes in
the pixel units) in the display region with a circuit board outside
the display substrate.
[0054] FIG. 3 is a schematic view showing a structure of a display
substrate according to another embodiment of the present
disclosure, (and FIG. 3 is also a top view of the display
substrate). Referring to FIG. 3, the display substrate 10 may
include a plurality of barriers 02. The plurality of barriers 02
are respectively formed at the concaves between different lead
wires 01, and an orthographic projection of each of the plurality
of barriers 02 on the base substrate 100 overlaps with an
orthographic projection of at least two of the plurality of lead
wires 01 on the base substrate 100. In this way, in the process of
preparing the display substrate 10, when the solution for preparing
the cover layer is sprayed on the base substrate on which the
plurality of lead wires and the plurality of barriers are formed,
the plurality of barriers 02 can further block the solution from
flowing out of the base substrate 100, further reducing the amount
of leakage of the solution.
[0055] In some embodiments, the plurality of lead wires 01 may be
divided into a plurality of lead wire groups S1 arranged
successively on the base substrate 100 in a direction P1 parallel
to a plane where the base substrate 100 is located, the plurality
of barriers 02 are divided into a plurality of barrier groups S2,
and the plurality of lead wire groups S1 are in one-to-one
correspondence with the plurality of barrier groups S2. Each
barrier 02 of each of the plurality of barrier groups S2 is formed
at least at the concave between at least two lead wires 01 of a
corresponding one of the plurality of lead wire groups S1, and an
orthographic projection of the each barrier 02 of each of the
plurality of barrier groups S2 on the base substrate 100 overlaps
with an orthographic projection of at least two lead wires 01 of a
corresponding one of the plurality of lead wire groups S1 on the
base substrate 100. In this way, in the process of preparing the
display substrate 10, when the solution for preparing the cover
layer is sprayed on the base substrate on which the plurality of
lead wire groups and the plurality of barrier groups are formed,
since the plurality of barrier groups are located respectively in a
plurality of areas of the base substrate, the solution in the
plurality of areas can be blocked, so that provision of the
plurality of barrier groups causes a larger block range, further
reducing the amount of leakage of the solution.
[0056] It should be noted that, in the embodiment shown in FIG. 3,
the plurality of lead wires 01 are divided into four lead wire
groups S1, and the plurality of barriers 02 are divided into four
barrier groups S2, and each of the lead wire groups S1 includes
eight lead wires 01, and each of the barrier groups S2 includes
five barrier 02. In some embodiments, the plurality of lead wires
01 can also be divided into other groups (such as five groups) S1
of lead wires, and the plurality of barriers 02 can also be divided
into other groups (such as five groups) S2 of barriers 02, each of
the lead wire groups S1 may also include other number (such as ten)
of lead wires 01, and each of the barrier groups S2 may also
include other number (such as six) of barriers 02. According to the
embodiments of the present disclosure, the number of the lead wires
in different lead wire groups may be the same or different, and the
number of the barriers in different barrier groups may be the same
or different, and they are not limited according to the embodiments
of the present disclosure.
[0057] In some embodiments, an orthographic projection of each of
the plurality of lead wires 01 on the base substrate 100 overlaps
with an orthographic projection of at least one of the barriers 02
on the base substrate 100. That is, a barrier is formed at the
concave between every two lead wires 01 on the base substrate 100.
In addition, in some embodiments, a height of the barrier 02 on the
base substrate 100 is greater than or equal to a height of each of
the plurality of lead wires 01 on the base substrate 100. In the
illustrated embodiments, the height of the barrier 02 on the base
substrate 100 is greater than the height of each of the plurality
of lead wires 01 on the base substrate 100. In this way, in the
process of preparing the display substrate, when the solution for
preparing the cover layer is sprayed on the base substrate on which
the plurality of lead wires and the plurality of barriers are
formed, a portion of the solution flowing in a concave which is
formed between each lead wire and at least one lead wire adjacent
to the each lead wire can be blocked, further reducing the amount
of leakage of the solution.
[0058] In some embodiments, the barrier 02 may be in a strip shape,
an orthographic projection of the barrier 02 on the base substrate
100 intersects with an orthographic projection of one,
corresponding to the barrier 02, of the plurality of lead wires 01
on the base substrate 100, and the one, corresponding to the
barrier 02, of the plurality of lead wires 01 is a lead wire of
which the orthographic projection on the base substrate 100
overlaps with the orthographic projection of the barrier 02 on the
base substrate 100. In this way, in the process of preparing the
display substrate, after the solution for preparing the cover layer
is sprayed on the base substrate, the barrier can block the flow of
the solution when the solution flows along the concave which is
formed between at least two lead wires corresponding to the
barrier, to reduce the flow rate of the solution. Moreover, since
the barrier has a larger block range for the solution, and the
solution takes a longer time to flow along the barrier, so that the
barrier can greatly reduce the flow rate of the solution, enabling
the flow of the solution to stop at the edge of the base substrate
or enabling some of the solution to have dried out before flowing
out of the base substrate, thereby reducing the amount of leakage
of the solution.
[0059] In some embodiments, the orthographic projection of the
barrier 102 on the base substrate 100 can has a straight-linear
shape. In some embodiments, the orthographic projection of the
barrier 102 on the base substrate 100 can be substantially
perpendicular to the orthographic projection of at least one lead
wire 101 corresponding to the barrier 102 on the base substrate
100. In this case, the block range of the barrier substantially
perpendicular to the at least one lead wire is further increased,
and the time taken for the solution to flow along the barrier is
further lengthened, further reducing the amount of leakage of the
solution.
[0060] FIG. 4 is a schematic view showing a structure of a display
substrate according to a further embodiment of the present
disclosure. Referring to FIG. 4, regarding the arrangement of the
plurality of lead wire groups S1 and the plurality of barrier
groups S2 of the display substrate 10, an arrangement direction of
barriers of each of the plurality of barrier groups S2 may be
different from an arrangement direction of lead wires of one of the
plurality of lead wire groups S1 corresponding to the each of the
plurality of barrier groups S2. When the solution for preparing the
cover layer flows along the concaves formed by the one lead wire
group corresponding to the each of the plurality of barrier groups
S2, these barriers in the each of the plurality of barrier groups
S2 sequentially block flow of the solution, so that the time taken
for the solution to flow along the barriers is further lengthened,
further reducing the amount of leakage of the solution.
[0061] In some embodiments, the arrangement direction of barriers
of each of the plurality of barrier groups S2 may be perpendicular
to the arrangement direction of lead wires of one of the plurality
of lead wire groups S1 corresponding to the each of the plurality
of barrier groups S2. In this case, the block range of the each of
the plurality of barrier groups S2 is further increased, and the
time taken for the solution to flow along the each of the plurality
of barrier groups S2 is further lengthened, further reducing the
amount of leakage of the solution.
[0062] In some embodiments, the orthographic projection of the
barrier on the base substrate 100 can also have a non-linear shape.
For example, FIG. 5 is a schematic view showing a structure of a
display substrate according to a yet further embodiment of the
present disclosure. As shown in FIG. 5, a plurality of barriers in
the display substrate 10 may have the following configuration, that
is, an orthographic projection of a barrier 021 on the base
substrate 100 has a curvilinear shape. When the solution for
preparing the cover layer flows out of the base substrate, the flow
path of the solution along the curved barrier is tortuous, so that
the time taken for the solution to flow along the barrier further
lengthens, further reducing the amount of leakage of the
solution.
[0063] In some embodiments, continuing with FIG. 5, the plurality
of barriers may adopt the following configuration, that is, the
orthographic projection of the barrier 022 on the base substrate
100 has a zigzag shape. It should be noted that, FIG. 5 shows an
embodiment in which the plurality of barriers include barriers 021
of which the orthographic projections on the base substrate 100 has
a curvilinear shape and barriers 022 of which the orthographic
projections on the base substrate 100 has a zigzag shape. In some
embodiments, the orthographic projection of each of the plurality
of barriers on the base substrate 100 has a curvilinear shape, or,
the orthographic projection of each of the plurality of barriers on
the base substrate 100 has a zigzag shape, or else, the
orthographic projection of the barrier on the base substrate 100
may have other shape. It is not limited according to embodiments of
the present disclosure.
[0064] FIG. 6 is a schematic view showing a structure of a display
substrate according to a still further embodiment of the present
disclosure, and FIG. 7 is a sectional schematic view taken along a
line B-B of FIG. 6. Referring to FIG. 6 and FIG. 7, the display
substrate 10 may further include: a ring-shaped wall structure 04
between the plurality of lead wires 01 and the cover layer 03. The
base substrate includes a display region and a non-display region
(namely a region of the base substrate which is outside an area
where the display structure F1 is located) surrounding the display
region, both the plurality of lead wires 01 and the barrier 02 are
within the non-display region of the base substrate 100, and both
the display region (namely the area where the display structure F1
is located) of the base substrate 100 and the barrier 02 are
surrounded by the ring-shaped wall structure 04. When the solution
for preparing the cover layer flows out of the base substrate, the
ring-shaped wall structure 04 can retain a portion of the solution
within the annular region surrounded by the ring-shaped wall
structure, thereby reducing the amount of leakage of the
solution.
[0065] In some embodiments, the ring-shaped wall structure 04
includes a first ring-shaped wall substructure 041 and a second
ring-shaped wall substructure 042 surrounding the first ring-shaped
wall substructure 041, and both the display region of the base
substrate 100 and the barrier 02 are surrounded by the first
ring-shaped wall substructure 041. After the solution for preparing
the cover layer flows out of an annular region surrounded by the
first ring-shaped wall substructure, the second ring-shaped wall
substructure can further block the solution, so that more solution
is retained within the annular region surrounded by the ring-shaped
wall structure, further reducing the amount of leakage of the
solution.
[0066] In some embodiments, provided that the display substrate is
an OLED display substrate, the pixel unit in the display structure
of the display substrate may include: an OLED and a pixel circuit
for driving the OLED, the pixel circuit has a gate electrode and a
power terminal. The signal line in the display structure of the
display substrate may include: a gate electrode signal line
connected to the gate electrode, and a power terminal signal line
connected to the power terminal. Continuing with FIG. 6 and FIG. 7,
the plurality of lead wires may include a plurality of gate
electrode lead wires 010 and a plurality of power terminal lead
wires 011. The gate electrode lead wire 010 is used to connect to
the gate electrode signal line, and the power terminal lead wire
011 is used to connect to the power terminal signal line. The
plurality of gate electrode lead wires 010 may be located in the
same layer, and the plurality of power terminal lead wires 011 may
be located in the same layer. Moreover, the display substrate 10
may further include: a planarization layer 05 between the plurality
of gate electrode lead wires 010 and the plurality of power
terminal lead wires 011, and the material of the planarization
layer 05 may be an insulating material.
[0067] In some embodiments, the display substrate 10 can be a
flexible display substrate.
[0068] In some embodiments, the material of barrier 02 can be the
same as that of planarization layer 05.
[0069] It should be noted that, FIGS. 1-7 show these embodiments in
which the base substrate 100 of the display substrate 10 has a
shape having rounded corners. In some embodiments, the base
substrate 100 may have a shape having no rounded corners (for
example, a rectangular shape), and it is not limited according to
embodiments of the present disclosure.
[0070] According to embodiments of the present disclosure, there is
further disclosed a method of manufacturing the display substrate
according to any one of the abovementioned embodiments. Referring
to FIG. 8, the method includes: providing the base substrate;
forming the plurality of lead wires on the base substrate, the
plurality of lead wires being separated from one another to form a
concave between every two adjacent ones of the plurality of lead
wires; forming the barrier on the base substrate, the barrier being
formed at least at the concave between at least two of the
plurality of lead wires to block the concave; and forming the cover
layer by spraying a solution for preparing the cover layer on the
plurality of lead wires and the barrier.
[0071] More specifically, according to exemplary embodiments, in
the process of preparing the display substrate, the base substrate
may be provided first, then the display structure, the gate
electrode lead wire, the planarization layer, the power terminal
lead wire, and the ring-shaped wall structure are prepared on the
base substrate; after that, the barrier is formed on the plurality
of lead wires (including the gate electrode lead wire and the power
terminal lead wire) between the display region of the base
substrate and the ring-shaped wall structure; finally, the solution
for preparing the cover layer is sprayed on the display region of
the base substrate and a portion of the non-display region. The
cover layer can be formed after the solution is dried, to obtain
the display substrate.
[0072] It should be noted that, in the process of preparing the
display substrate on the base substrate, the gate electrode and the
gate electrode signal line in the display structure may be formed
in the same layer as the gate electrode lead wire; the power
terminal (also referred to as Vss or Vdd) and the power terminal
signal line in the display structure may be formed in the same
layer as the power terminal lead wire.
[0073] Accordingly, in the display substrate according to the
embodiments of the present disclosure, the barrier is located
between the plurality of lead wires and the cover layer, and the
barrier is formed at least at the concave between at least two of
the plurality of the lead wires to block the concave. Therefore, in
the process of preparing the display substrate, when the solution
for preparing the cover layer is sprayed on the base substrate
where the plurality of lead wires and the barrier are formed, the
barrier can block a portion of the solution from flowing out of the
base substrate along the concave formed between at least two lead
wires, thereby reducing the amount of leakage of the solution and
improving the coverage effect of the cover layer formed after the
solution is dried.
[0074] According to embodiments of the present disclosure, there is
also provided a display panel including the display substrate
according to any one of the above embodiments. In some embodiments,
the display panel may be a flexible display panel. In some
embodiments, the display panel may be an OLED display panel.
[0075] According to embodiments of the present disclosure, there is
further provided a display apparatus including the display panel
according to any one of the above embodiments. For example, the
display apparatus can be any product or component having a display
function, such as electronic paper, mobile phone, tablet computer,
television, display, notebook computer, digital photo frame,
navigator, wearable display device, and the like.
[0076] Although some exemplary embodiments of the present
disclosure have been shown and described above, it would be
appreciated by a person skilled in the art that many modifications
or changes may be made therein without departing from the principle
and spirit of the present disclosure, the scope of which is defined
in the appended claims and their equivalents.
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