U.S. patent application number 15/634816 was filed with the patent office on 2018-08-30 for flexible display substrate and flexible display apparatus.
This patent application is currently assigned to Shanghai Tianma Micro-Electronics Co., Ltd.. The applicant listed for this patent is Shanghai Tianma Micro-Electronics Co., Ltd.. Invention is credited to Yong Wu, Yingteng Zhai.
Application Number | 20180248139 15/634816 |
Document ID | / |
Family ID | 59112033 |
Filed Date | 2018-08-30 |
United States Patent
Application |
20180248139 |
Kind Code |
A1 |
Zhai; Yingteng ; et
al. |
August 30, 2018 |
FLEXIBLE DISPLAY SUBSTRATE AND FLEXIBLE DISPLAY APPARATUS
Abstract
A flexible display substrate and a flexible display apparatus
are provided. The flexible display substrate has a display region
including a plurality of pixel units and a peripheral region
adjacent to the display region. The flexible display substrate
includes a substrate and at least one conductive wire disposed on
the substrate, each conductive wire includes at least two first
conductive portions and at least one second conductive portion, and
two adjacent first conductive portions are electrically connected
through the second conductive portion. The Young's modulus of the
first conductive portions is greater than that of the second
conductive portion, and the resistivity of the first conductive
portions is less than that of the second conductive portion.
Inventors: |
Zhai; Yingteng; (Shanghai,
CN) ; Wu; Yong; (Shanghai, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Shanghai Tianma Micro-Electronics Co., Ltd. |
Shanghai |
|
CN |
|
|
Assignee: |
Shanghai Tianma Micro-Electronics
Co., Ltd.
Shanghai
CN
|
Family ID: |
59112033 |
Appl. No.: |
15/634816 |
Filed: |
June 27, 2017 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
Y02E 10/549 20130101;
H01L 27/323 20130101; H01L 27/3276 20130101; H01L 51/0097 20130101;
H01L 2251/5338 20130101; H01L 2251/55 20130101 |
International
Class: |
H01L 51/00 20060101
H01L051/00; H01L 27/32 20060101 H01L027/32 |
Foreign Application Data
Date |
Code |
Application Number |
Feb 28, 2017 |
CN |
201710112947.5 |
Claims
1. A flexible display substrate, comprising a display region having
a plurality of pixel units and a peripheral region adjacent to the
display region, wherein the flexible display substrate further
comprises: a substrate; at least one conductive wire disposed on
the substrate; wherein each conductive wire comprises at least two
first conductive portions and at least one second conductive
portion, wherein the first conductive portions are disposed
discontinuously and separated from each other, and two adjacent
first conductive portions are electrically connected through the
second conductive portion: and wherein a Young's modulus of the
first conductive portions is greater than that of the second
conductive portion, and resistivity of the first conductive
portions is less than that of the second conductive portion,
2. The flexible display substrate according to claim 1, wherein the
first conductive portions are made of metals.
3. The flexible display substrate according to claim 1, wherein the
second conductive, portion comprises conductive polymeric
material.
4. The flexible display substrate according to claim 3, wherein the
second conductive portion comprises at least one of PEDOT
(poly(3,4--ethylenedioxythiophene)), ethylendioxythiophene and
polystyrene sulfonic acid,
5. The flexible display substrate according to claim 1, wherein
each conductive wire comprises only one second conductive portion,
the second conductive portion is disposed on a side, which is
facing away from the substrate, of the first conductive portions,
and the second conductive portion is arranged to cover the at least
two first conductive portions.
6. The flexible display substrate according to claim 5, further
comprising at least one third conductive portion, wherein the third
conductive portion is disposed on a surface at a side, which is
facing away from the first conductive portions, of the second
conductive portion, the Young's modulus of the third conductive
portion is greater than that of the second conductive portion, and
the resistivity of the third conductive portion is less than that
of the second conductive portion; wherein in a direction
perpendicular to the substrate, each third conductive portion is
intersected with two adjacent first conductive portions; and the
second conductive portion between the third conductive portion and
the first conductive portions intersected with the third conductive
portion has a thickness d1 in the direction perpendicular to the
substrate, and the second conductive portion between two adjacent
first conductive portions has a thickness d2 in a direction
parallel to the substrate, wherein d1 is less than d2.
7. The flexible display substrate according to claim 5, further
comprising at least one third conductive portion, wherein the third
conductive portion is disposed on a surface at a side, which is
facing away from the first conductive portions, of the second
conductive portion, the Young's modulus of the third conductive
portion is greater than that of the second conductive portion, and
the resistivity of the third conductive portion is less than that
of the second conductive portion; wherein an orthographic
projection of the third conductive portion on the substrate is
between orthographic projections of two adjacent first conductive
portions on the substrate; and the second conductive portion
between the third conductive portion and the first conductive
portions adjacent to the third conductive portion has a thickness
d1 in a direction perpendicular to the substrate, and the second
conductive portion between two adjacent first conductive portions
has a thickness d2 in a direction parallel to the substrate,
wherein d1 is less than d2.
8. The flexible display substrate according to claim 6, wherein a
material of the third conductive portion and that of the first
conductive portions are the same.
9. The flexible display substrate according to claim 7, wherein a
material of the third conductive portion and that of the first
conductive portions are the same.
10. The flexible display substrate according to claim 1, wherein
each second conductive portion is electrically connected with two
adjacent first conductive portions and insulated from other first
conductive portions.
11. The flexible display substrate according to claim 10, wherein
each conductive wire comprises a plurality of first conductive
portions and a plurality of second conductive portions.
12. The flexible display substrate according to claim 10, wherein
each of the first conductive portions comprises at least one
conductive contact surface, and the conductive contact surface is
in contact with the second conductive portion; and the conductive
contact surfaces of the at least two first conductive portions are
the same or different in areas.
13. The flexible display substrate according to claim 1, wherein
the first conductive portions are cuboid-shaped.
14. The flexible display substrate according to claim 1, wherein
the at least two first conductive portions have the same
volume.
15. (canceled)
16. The flexible display substrate according to claim 1, wherein
the flexible display substrate comprises a plurality of conductive
wires with the same equivalent resistance.
17. The flexible display substrate according to claim 1, further
comprising: a plurality of gate lines extending along a first
direction and arranged along a second direction; a plurality of
data lines extending along the second direction and arranged along
the first direction; and the gate lines and the data lines are
intersected and insulated from each other to define the pixel
units; wherein the first direction is a horizontal direction, and
the first direction and the second direction are orthogonal to each
other, and the first conductive portions are disposed at the same
layer as the gate lines.
18. The flexible display substrate according to claim 1, further
comprising: a plurality of gate lines extending along a first
direction and arranged along a second direction; a plurality of
data lines extending along the second direction and arranged along
the first direction; and the gate lines and the data lines are
intersected and insulated from each other to define the pixel
units; wherein the first direction is a horizontal direction, and
the first direction and the second direction are orthogonal to each
other, and the first conductive portions are disposed at the same
layer as the data lines.
19. The flexible display substrate according to claim 1, further
comprising: a display functional layer disposed on the substrate;
an encapsulation layer disposed on a side, which is facing away
from the substrate, of the display functional layer; and a touch
layer disposed on a side, which is facing away from the substrate,
of the encapsulation layer; wherein the touch layer comprises a
plurality of touch electrodes and a plurality of touch electrode
leads, and the conductive wires are multiplexed as the touch
electrode leads.
20. A flexible display apparatus, comprising: a flexible display
substrate; and a housing, wherein the flexible display substrate
comprises a display region having a plurality of pixel units, and a
peripheral region adjacent to the display region; wherein the
flexible display substrate further comprises a substrate and at
least one conductive wire disposed on the substrate; wherein each
conductive wire comprises at least two first conductive portions
and at least one second conductive portion, the first conductive
portions are disposed discontinuously and separated from each
other, and two adjacent first conductive portions being
electrically connected through the second conductive portion; and
wherein a Young's modulus of the first conductive portions is
greater than that of the second conductive portion, and resistivity
of the first conductive portions is loss than that of the second
conductive portion.
Description
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This application claims priority under 35 USC .sctn. 119 to
Chinese Patent Application No. CN201710112947.5 filed on Feb. 28,
2017, the disclosure of which is incorporated herein by reference
in its entirety.
TECHNICAL FIELD
[0002] The present disclosure relates to the display field, and
more particular y a flexible display substrate and a flexible
display apparatus.
BACKGROUND
[0003] A flexible display apparatus is bendable and deformable and
can be applied to various fields such as a wearable device, a
mobile phone and an electronic book, including a flexible organic
electroluminescent display apparatus, a flexible electrophoretic
display apparatus, a flexible liquid crystal display apparatus, and
the like.
[0004] FIG. 1 is a schematic plan diagram showing a flexible
display substrate according to the related art, and FIG. 1a is a
schematic cross-sectional diagram of the flexible display substrate
shown in FIG. 1. In combination with FIG. 1 and FIG. 1a, the
flexible display apparatus includes a flexible substrate 01 made of
a bendable flexible material such as plastics, so that the display
apparatus is bendable. A wire 02 for transmitting an electrical
signal is disposed on the flexible substrate 01.
[0005] Reference is made to FIG. 1b, which is a schematic diagram
showing the flexible display substrate of FIG. 1a being in a
stressed state. The flexible display apparatus is deformed due to
bending under an action of a force F1 when being used. The
deformation amount of the wire 02 is greater and the stress is
relatively concentrated at a region A, and thus the wire 02 is
liable to break at the region A when the flexible display apparatus
deforms repeatedly under the action of the force F1, causing an
open circuit. Therefore, a normal operation of the flexible display
apparatus is affected.
SUMMARY
[0006] In view of the above, the present disclosure provides a
flexible display substrate and a flexible display apparatus.
[0007] The present disclosure provides a flexible display
substrate. The flexible display substrate has a display region
including a plurality of pixel units and a peripheral region
adjacent to the display region. The flexible display substrate
further includes a substrate and at least one conductive wire
disposed on the substrate. Each conductive wire includes at least
two first conductive portions and at least one second conductive
portion, and two adjacent first conductive portions are
electrically connected through the second conductive portion
current of a first conductive portion flows into another first
conductive portion adjacent to the first conductive portion through
the second conductive portion electrically connected with the first
conductive portion. The Young's modulus of the first conductive
portions is greater than that of the second conductive portion, and
the resistivity of the first conductive portions is less than that
of the second conductive portion.
[0008] The present disclosure further provides a flexible display
apparatus including a flexible display substrate and a housing,
where the flexible display substrate has a display region including
a plurality of pixel units and a peripheral region adjacent to the
display region. The flexible display substrate further includes a
substrate and at least one conductive wire disposed on the
substrate. The conductive wire includes at least two first
conductive portions and at least one second conductive portion,
wherein two adjacent first conductive portions are electrically
connected through the second conductive portion, and wherein the
Young's modulus of the first conductive portions is greater than
that of the second conductive portion, and the resistivity of the
first conductive portions is less than that of the second
conductive portion.
[0009] Compared with the related art, the present disclosure has at
least one of the outstanding advantages described below.
[0010] In the flexible display substrate of the present disclosure,
each conductive wire includes at least two first conductive
portions and at least one second conductive portion, and two
adjacent first conductive portions are electrically connected
through the second conductive portion; the resistivity of the first
conductive portions is less than that of the second conductive
portion. In other words, when an electrical signal is transmitted
through the conductive wire, the current flows from a first
conductive portion to another conductive portion adjacent to the
first conductive portion through the second conductive portion
electrically connected with the first conductive portion. Since the
Young's modulus of the first conductive portions is greater than
that of the second conductive portion, the deformation of the
conductive wire is mainly concentrated on the second conductive
portion with less the Young's modulus in a state where the flexible
display substrate is bent and deformed. Compared with the first
conductive portions, the second conductive portion is less likely
to break due to the smaller the Young's modulus. Compared with the
related art, in the flexible display substrate provided by the
present disclosure, the first conductive portions with smaller
resistivity can be used for the conductive wire, and thus the loss
occurred during the transmission of the electrical signal can be
reduced. Meanwhile, two adjacent first conductive portions are
connected through the second conductive portion with smaller the
Young's modulus, the bending stress is concentrated on the second
conductive portion, and the conductive wire is less likely to
break, and thus the bending resistance of the flexible display
substrate is improved, the deformation amount which may be
withstood by the flexible display substrate is increased, and the
service life of the flexible display substrate is prolonged.
BRIEF DESCRIPTION OF DRAWINGS
[0011] FIG. 1 is a schematic plan diagram showing a flexible
display substrate according to the related art;
[0012] FIG. 1a is a schematic cross-sectional diagram of the
flexible display substrate shown in FIG. 1;
[0013] FIG. 1b is a schematic cross-sectional diagram showing the
flexible display substrate shown in FIG. 1a being in a stressed
state;
[0014] FIG. 2 is a schematic plan diagram showing a flexible
display substrate according to an embodiment of the present
disclosure;
[0015] FIG. 3 is a partial schematic plan diagram showing the
flexible display substrate according to the embodiment of FIG.
2;
[0016] FIG. 3a is a schematic cross-sectional diagram showing the
flexible display substrate shown in FIG. 3;
[0017] FIG. 3b is another partial schematic plan diagram showing
the flexible display substrate according to the embodiment of FIG.
2;
[0018] FIG. 4 is a further partial schematic plan diagram showing
the flexible display substrate according to the embodiment of FIG.
2;
[0019] FIG. 4a is a schematic cross-sectional diagram showing the
flexible display substrate shown in FIG. 4;
[0020] FIG. 5 is another partial schematic plan diagram showing the
flexible display substrate shown in FIG. 2;
[0021] FIG. 5a is a schematic cross-sectional diagram showing the
flexible display substrate shown in FIG. 5;
[0022] FIG. 6 is another partial schematic plan diagram showing the
flexible display substrate shown in FIG. 2;
[0023] FIG. 6a is a schematic cross-sectional diagram showing the
flexible display substrate shown in FIG. 6;
[0024] FIG. 7 is another partial schematic plan diagram showing the
flexible display substrate shown in FIG. 2;
[0025] FIG. 8 is a schematic plan diagram showing another flexible
display substrate according to an embodiment of the present
disclosure;
[0026] FIG. 9 is a schematic cross-sectional diagram showing the
flexible display substrate shown in FIG. 2;
[0027] FIG. 10 is a schematic plan diagram showing a touch layer of
the flexible display substrate shown in FIG. 9; and
[0028] FIG. 11 is a schematic plan diagram showing a flexible
display apparatus according to an embodiment of the present
disclosure.
DETAILED DESCRIPTION
[0029] The foregoing objectives, features and advantages of the
present disclosure will become more apparent from the following
description of the present disclosure when taken in conjunction
with the accompanying drawings and embodiments.
[0030] It is to be noted that specific details are set forth in the
following description so as to fully understand the present
disclosure. However, the present disclosure may be implemented in
multiple manners otherwise than that specifically described herein,
and may be popularized by those skilled in the art without
departing from the spirit of the present disclosure. Accordingly,
the present disclosure is not limited to the detailed description
disclosed below.
[0031] With reference to FIG. 2, FIG. 3 and FIG. 3a, FIG. 2 is a
schematic plan diagram showing a flexible display substrate
according to an embodiment of the present disclosure, FIG. 3 is a
partial schematic plan diagram showing the flexible display
substrate shown in FIG. 2, and FIG. 3a a schematic cross-sectional
diagram showing the flexible display substrate shown in FIG. 3.
[0032] As shown in FIG. 2, the flexible display substrate has a
display region 100 including a plurality of pixel units 101 and a
peripheral region 200 adjacent to the display region 100. The
flexible display substrate further includes a substrate 00. As
shown in FIG. 3 and FIG. 3a, the flexible display substrate
provided by the present embodiment further includes at least one
conductive wire 10 disposed on the substrate 00. The conductive
wire 10 includes at least two first conductive portions 11 and at
least one second conductive portion 12. Two adjacent first
conductive portions 11 are electrically connected by the second
conductive portion 10, where the Young's modulus of the first
conductive portions 11 is greater than that of the second
conductive portion 12, and the resistivity of the first conductive
portions 11 is less than that of the second conductive portion
12.
[0033] in the flexible display substrate provided by the present
embodiment, each of the conductive wires 10 is used for
transmitting an electrical signal, for example, an electrical
signal with a constant voltage or a pulse electrical signal, which
is not particularly limited in the present embodiment. Extending
directions of the conductive wires 10 may be parallel to each other
or may intersect with each other, lengths of the conductive wires
10 may be the same or not exactly the same, line widths of the
conductive wires 10 may he the same or not exactly the same, which
are not particularly limited in the present embodiment. The
conductive wire 10 includes at least two first conductive portions
11 and at least one second conductive portion 12, where the first
conductive portions are disposed discontinuously and separate from
each other, and two adjacent first conductive portions 11 are
electrically connected by the second conductive portion 12. Since
the resistivity of the first conductive portion 11 is less than
that of the second conductive portion 12, when an electrical signal
is transmitted through the conductive wire 10, a current
preferentially flows in the first conductive portion 11 with a less
resistivity, and then flows into the adjacent first conductive
portion 11 through the second conductive portion 12. As can be
seen, when an electrical signal is transmitted through the
conductive wire 10 provided by the, present embodiment, the current
may sequentially flow through adjacent first conductive portions
11.
[0034] In the flexible display substrate provided by the present
disclosure, the resistivity and the bending resistance of the
conductive wire are considered. Specifically, the first conductive
portions with less resistivity are adopted to reduce a loss
occurring during the transmission of the electrical signal.
Meanwhile, the second conductive portion with less Young's modulus
is adopted to connect two adjacent first conductive portions, and
the bending stress is concentrated on the second conductive
portion, so that the conductive wire is less likely to break.
Therefore, the bending resistance of the flexible display substrate
is improved, the deformation amount which may he withstood by the
flexible display substrate is increased, and the service life of
the flexible display substrate is prolonged.
[0035] In some alternative implementations, in the flexible display
substrate shown in FIG. 3 and FIG. 3a, there is one second
conductive portion 12, which is disposed on a side, which is facing
away from the substrate 00, of the first conductive portions 11 and
covers at least two first conductive portions 11. In other words,
the second conductive portion 12 covers the first conductive
portions 11 as a whole, and the first conductive portions 11 in the
conductive wire are all electrically connected with the second
conductive portion 12, and the surface at the side, which is facing
away from the substrate 00, of each of the first conductive
portions 11 in the conductive wire is covered by the second
conductive portion 12. With reference to FIG. 3b, it is to he noted
that the first conductive portions 11 may be partially covered or
entirely covered by the second conductive portion 12. Similar parts
in FIG. 3b adopt the same reference numerals as that used in FIG.
3, which will be omitted herein. In the former case, the first
conductive portions may be partially covered by the second
conductive portion, for example, the first conductive portion 11b
located at an end of the conductive wire 10b is partially covered
by the second conductive portion. As another example, the width c2
of the second conductive portion may be slightly less than the
width c1 of the first conductive portions, and portions of the
first conductive portions, where the first conductive portions are
wider than the second conductive portion, are not covered by the
second conductive portion. In the latter case, for example, as
shown by the conductive wire 10a in FIG. 3b, the first conductive
portions may be entirely covered by the second conductive portion.
Alternatively, the width of the second conductive portion 12 may be
greater than that of the first conductive portions 11. In other
alternative implementations, the width of the second conductive
portion 12 may be equal to or less than that of the first
conductive portion 11, where the width of the first conductive
portion and the width of the second conductive portion may be
understood as a length for which the first conductive portions
extend along a direction perpendicular to the extending direction
of the conductive wire and a length for which the second conductive
portion extends along a direction perpendicular to the extending
direction of the conductive wire.
[0036] In some alternative implementations, reference is made to
FIG. 4 and FIG. 4a. FIG. 4 is a further partial schematic plan
diagram of the flexible display substrate as shown in FIG. 2, and
FIG. 4a is a schematic cross-sectional diagram of the flexible
display substrate as shown in FIG. 4. As shown in FIG. 4 and FIG.
4a, the flexible display substrate provided by the present
embodiment includes at least one conductive wire 10 disposed on the
substrate 00, where the conductive wire 10 includes at least two
first conductive portions 11 and at least one second conductive
portion 12, and two adjacent first conductive portions 11 are
electrically connected by the second conductive portion 12. The
Young's modulus of the first conductive portions 11 is greater than
that of the second conductive portion 12, and the resistivity of
the first conductive portions 11 is less than that of the second
conductive portion 12. The flexible display substrate provided by
the present embodiment further includes at least one third
conductive portion 13. The third conductive portion 13 is disposed
on a surface, which is facing away from the first conductive
portions 11, of the second conductive portion 12, the Young's
modulus of the third conductive portion 13 is greater than that of
the second conductive portion 12, and the resistivity of the third
conductive portion 13 is less than that of the second conductive
portion 12. Each of the third conductive portions 13 is intersected
with two adjacent first conductive portions 11 in a direction
perpendicular to the substrate 00. The third conductive portion 13
includes third intersecting portions 131 intersected with the first
conductive portions 11, and the first conductive portions 11
include first intersecting portions 111 intersected with the third
conductive portion 13. The second conductive, portion 12 disposed
between the third conductive portion 13 and the first conductive
portion 11 intersected with the third conductive portion 13 has a
thickness d1 in a direction perpendicular to the substrate 00, and
the second conductive portion 12 disposed between two adjacent
first conductive portions 11 has a thickness d2 in a direction
parallel to the substrate 00, where d1 is less than d2. Here, the
direction perpendicular to the substrate 00 is referred to as an X
direction in FIG. 4a, and the direction parallel to the substrate
00 is referred to as a Y direction in FIG. 4a. It is to be noted
that in the present embodiment, in the direction perpendicular to
the substrate 00, each third conductive portion 13 is intersected
with two adjacent first conductive portions 11, where intersecting
can be understood to mean an orthographic projection of the third
conductive portion 13 on the substrate 00 partially overlaps with
orthographic projections of two adjacent first conductive portions
11 on the substrate 00. Alternatively, in the flexible display
substrate provided by the present embodiment, a material of the
third conductive portion 13 is the same as that of the first
conductive portions 11.
[0037] It is to be noted that, since d1 is less than d2 and the
resistivity of the third conductive portion 13 is less than that of
the second conductive portion 12, when the current flows through
the conductive wire 10, a part of the current may flow from a first
conductive portion 11 to a third conductive portion 13 intersected
with the first conductive portion 11 through a second conductive
portion 11 electrically connected with the first conductive portion
11, and then flow from the third conductive portion 13 to another
first conductive portion 11 intersected with the third conductive
portion 13 through the second conductive portion 12; and the other
part of the current may flow from the first conductive portion 11
to another first conductive portion 11 adjacent to the first
conductive portion 11 through the second conductive portion 12
electrically connected with the first conductive portion 11. In the
flexible display substrate provided by the present embodiment, the
conductive wire 10 includes the first conductive portions 11, the
second conductive portion 12, and the third conductive portions 13,
where the first conductive portions 11 and the third conductive
portion 13 form a parallel structure, so that an equivalent
resistance of the conductive wire 10 may be reduced.
[0038] In some alternative implementations, reference is made to
FIG. 5 and FIG. 5a. FIG. 5 is another partial schematic plan
diagram of the flexible display substrate as shown in FIG. 2, and
FIG. 5a is a schematic cross-sectional diagram showing the flexible
display substrate as shown in FIG. 5. As shown in FIG. 5 and FIG.
5a, the flexible display substrate provided by the present
embodiment includes at least one conductive wire 10 disposed on the
substrate 00. Each of the conductive wire 10 includes at least two
first conductive portions 11 and at least one second conductive
portion 12, and two adjacent first conductive portions 11 are
electrically connected through the second conductive portion 12.
The Young's modulus of the first conductive portions 11 is greater
than that of the second conductive portion 12, and the resistivity
of the first conductive portions 11 is less than that of the second
conductive portion 12. The flexible display substrate provided by
the present embodiment further includes at least one third
conductive portion 13 disposed on a surface at the side, which is
facing away front the first conductive portions 11, of the second
conductive portion 12. The Young's modulus of the third conductive
portion 13 is greater than that of the second conductive portion
12, and the resistivity of the third conductive portion 13 is less
than that of the second conductive portion 12. An orthographic
projection of the third conductive portion 13 on the substrate 00
is between orthographic projections of two adjacent first
conductive portions 11 on the substrate 00. The second conductive
portion 12 disposed between the third conductive portion 13 and the
first conductive portion 11 adjacent to the third conductive
portion 13 has a thickness d1 in the direction perpendicular to the
substrate 00, and the second conductive portion 12 disposed between
two adjacent first conductive portions 11 has a thickness d2 in the
direction parallel to the substrate 00, where d1 is less than d2.
Here, the direction perpendicular to the substrate 00 is referred
to as an X direction in FIG. 5a, and the direction parallel to the
substrate 00 is referred to as a Y direction in FIG. 5a.
Alternatively, in the flexible display substrate provided by the
present embodiment, a material of the third conductive portion 13
is the same as that of the first conductive portions 11.
[0039] In the flexible display substrate provided by the present
embodiment, since d1 is less than d2 and the resistivity of the
third conductive portion 13 is less than that of the second
conductive portion 12, when the current flows through the
conductive wire 10, a part of the current may flow from a first
conductive portion 11 to a third conductive portion 13 adjacent to
the first conductive portion 11 through a second conductive portion
11 electrically connected with the first conductive portion 11, and
then flow from the third conductive portion 13 to another first
conductive portion 11 adjacent to the third conductive portion 13
through the second conductive portion 12; and the other part of the
current flows from the first conductive portions 11 to another
first conductive portion 11 adjacent to the first conductive
portion 11 through the second conductive portion 12 electrically
connected with the first conductive portion 11. Here, the first
conductive portion 11 and the third conductive portion 13 form a
parallel structure, so that an equivalent resistance of the
conductive wire 10 may be reduced. An orthographic projection of
the third conductive portion 13 on the substrate 00 is between
orthographic projections of two adjacent first conductive portions
11 on the substrate 00, that is, the third conductive portion 13 is
not intersected with the first conductive portions 11. Therefore,
the conductive wire 10 is easy to bend and deform, and thus the
deformation amount which may be withstood by the flexible display
substrate is increased.
[0040] In some alternative implementations, reference is made to
FIG. 6 and FIG. 6a. FIG. 6 is another partial schematic plan
diagram showing the flexible display substrate as shown in FIG. 2,
and FIG. 6a is a schematic cross-sectional diagram of the flexible
display substrate as shown in FIG. 6. As shown in FIG. 6 and FIG.
6a, the flexible display substrate provided by the present
embodiment includes at least one conductive wire 10 disposed on the
substrate 00. Each conductive wire 10 includes at least two first
conductive portions 11 and at least one second conductive portion
12, and two adjacent first conductive portions 11 are electrically
connected through the second conductive portion 12. The Young's
modulus of the first conductive portions 11 is greater than that of
the second conductive portion 12, and the resistivity of the first
conductive portions 11 is less than that of the second conductive
portion 12, where each second conductive portion 12 is electrically
connected with two adjacent first conductive portions 11 and is
insulated from other first conductive portions 11. Alternatively,
with reference to the conductive wire 10c shown in FIG. 6, the
conductive wire 10 includes a plurality of first conductive
portions 11 and a plurality of second conductive portions 12. In
the flexible display substrate provided by the present embodiment,
the first conductive portions 11 are disposed discontinuously and
separated from each other, and the second conductive portions 12
are disposed discontinuously and separated from each other.
[0041] In some alternative implementations, for example, in the
flexible display substrate provided by the embodiment of FIG. 6,
each first conductive portion 11 includes at least one conductive
contact surface 111 that is in contact with the second conductive
portion 12. In the present embodiment, the conductive contact
surface 111 is a region where the first conductive portion 11 is in
contact with the second conductive portion 12. If the first
conductive portion 11 includes a cross section in which only a part
of the cross section is in contact with the second conductive
portion 12, the conductive contact surface 111 refers to the part,
which is in contact with the second conductive portion 12, of the
cross section, rather than the entire cross section. Alternatively,
areas of the conductive contact surfaces 111 of at least two first
conductive portions 11 in the conductive wire 10 are equal or
unequal. That is, in the same conductive wire 10, the areas of the
conductive contact surfaces 111 are equal or unequal.
Alternatively, in the same conductive wire 10, the areas of the
conductive contact surface 111 are equal, while among different
conductive wires 10, areas of the conductive contact surfaces 111
are unequal. It is to he noted that the areas of the conductive
contact surfaces 111 are one of the factors that affect the
equivalent resistance of the conductive wires 10. For example, if
two conductive wires 10 are the same in the number, the length and
the cross-sectional area of the first conductive portion 11 and the
like and are the same in the number and the length of the second
conductive portion 12, and differ from each other merely in the
areas of the conductive contact surfaces 111, the equivalent
resistance of the conductive wire 10 having the conductive contact
surface 111 with a greater area is smaller. Therefore, in the
flexible display substrate provided by the present embodiment, the
equivalent resistance of the conductive wire 10 can he adjusted by
adjusting the area of the conductive contact surface 111. It is to
be noted that in the embodiment provided by FIG. 6, the shape of
the conductive contact surface 111 is a flat surface. In the
flexible display substrate provided by the embodiments of the
present disclosure, the shape of the conductive contact surface 111
is not particularly limited, and the shape of the conductive
contact surface 111 may be a rectangular flat surface, a
trapezoidal flat surface, a curved surface, a folded surface and so
on. Reference is made to FIG. 7, which is another partial schematic
diagram showing the flexible display substrate as shown in FIG. 2.
Reference numerals similar to that in FIG. 6 are used in FIG. 7,
and the similar parts are omitted. The difference between FIG. 7
and FIG. 6 lies in: in the embodiment of FIG. 7, the shape of the
conductive contact surface 111 is a folded surface. The conductive
contact surface 111 with the folded surface shape contributes to
increasing the area of the conductive contact surface 111 and
reducing the equivalent resistance of the conductive wire 10.
[0042] In addition, in the flexible display substrate provided by
the embodiments of the present disclosure, the equivalent
resistance of the conductive wire 10 can be adjusted by setting the
parameters such as the number, the length, and the cross-sectional
area of the first conductive portions 11, or can be adjusted by
setting the parameters such as the number, the length, the
cross-sectional area, and the like of the second conductive portion
12. Alternatively, in the flexible display substrate provided by
the embodiments of the present disclosure, the equivalent
resistances of the plurality of conductive wires 10 are equal.
Since the equivalent resistances of the plurality of conductive
wires 10 are equal, the time it takes for the electrical signal
being transmitted in the plurality of conductive wires 10 and the
voltage losses during the process are substantially the same, and
the signal transmission performance of the conductive wires of the
flexible display substrate can be improved.
[0043] In some alternative implementations, reference is made to
FIG. 8, which is a schematic plan diagram showing another flexible
display substrate according to an embodiment of the present
disclosure. The flexible display substrate provided by the present
embodiment has a display region 100 including a plurality of pixel
units 101, and a peripheral region 200 adjacent to the display
region 100. The flexible display substrate further includes a
substrate 00, and further includes a plurality of gate lines 102
extending along a first direction and being arranged along a second
direction, and a plurality of data lines 103 extending along the
second direction and being arranged along the first direction. The
gate lines 102 and the data lines 103 intersect in an insulation
manner to define the pixel units 101. In the embodiments of the
present disclosure, the first conductive portions 11 in the
conductive wire 10 and the gate lines 102/the data lines 103 are
disposed in the same layer. That is, the first conductive portions
11 in the conductive wire 10 provided by the embodiments of the
present disclosure and the gate lines 102 may be formed in the same
process. Alternatively, the first conductive portions 11 in the
conductive wire 10 provided by the embodiments of the present
disclosure and the data lines 103 may be formed in the same
process. Alternatively, the conductive wire 10 is electrically
connected with the gate lines 102 or the data lines 103.
[0044] In some alternative implementations, reference is made to
FIG. 9, which is a schematic cross-sectional diagram showing the
flexible display substrate as shown in FIG. 9. In combination with
FIG. 9 and FIG. 2, the flexible display substrate provided by the
present embodiment has a display region 100 including a plurality
of pixel units 101, and a peripheral region 200 adjacent to the
display region 100. The flexible display substrate provided by the
present embodiment further includes a display functional layer 300
disposed on the substrate 00; an encapsulation layer 400 disposed
on a side, which is facing away from the substrate 00, of the
display functional layer 300; and a touch layer 500 disposed on a
side, which is facing away from the substrate 00, of the
encapsulation layer 400. The display functional layer 300 is used
to display image information, and for example, may be an organic
light emitting diode array. The encapsulation layer 400 covers the
display functional layer 300 for isolating the display functional
layer 300 from the air to prevent moisture and oxygen in the air
from eroding the display functional layer 300. The encapsulation
layer 400 may be a single layer structure, or may be of a
multi-layer structure. The touch layer 500 is used to detect
information regarding touch operations. The touch layer provided by
the related art can detect position information of the touch
operation, and size information of a pressure of the touch
operation. The touch layer generally includes a touch electrode and
a touch electrode lead for transmitting the electrical signal to
the touch electrode. A working mode of the touch layer can include
a self-capacitance mode or a mutual-capacitance mode. The principle
of the self-capacitance type touch layer is as follows: a change in
the electrical signal caused by a change in the ground capacitance
of the touch electrode is detected and analyzed when a touch
operation occurs, so as to determine information regarding the
touch operation. The principle of the mutual-capacitance type touch
layer is as follows: a change in the electrical signal of at least
one touch electrode caused by a change in capacitance between at
least two touch electrodes is detected and analyzed when the a
touch operation occurs, so as to determine information regarding
the touch operation. Reference is made to FIG. 10, which is a
schematic plan diagram showing the touch layer of the flexible
display substrate as shown in FIG. 9. The touch layer 500 includes
a plurality of touch electrodes 501 and touch electrode leads 502.
The conductive wires 10 provided by the embodiments of the present
disclosure are also used as the touch electrode leads 502. In the
touch layer 500 provided by the embodiment of FIG. 10, only one
arrangement of the touch electrodes and the touch electrode leads
is shown, and the structure of the touch layer 500 of the present
embodiment is not particularly limited.
[0045] It is to he noted that, in some alternative implementations,
in the conductive wires 10 provided by the embodiments of the
present disclosure, the first conductive portions 11 are made of a
metal, such as aluminum, titanium, chromium and molybdenum, and the
second conductive portion 12 is made of a conductive polymeric
material. Alternatively, the second conductive portion 12 is made
of at least one of PEDOT (poly(3,4-ethylenedioxythiophene)),
ethylenedioxythiophene, and polystyrolsulfon acid. Alternatively,
the first conductive portion 11 is cuboid-shaped, and the first
conductive portions 11 in the conductive wires 10 are the same or
different in volumes.
[0046] An embodiment of the present disclosure further provides a
flexible display apparatus. Reference is made to FIG. 11, which is
a schematic plan diagram showing a flexible display apparatus
according to an embodiment of the present disclosure. The flexible
display apparatus provided by the present embodiment includes a
flexible display substrate 600 and a housing 700, where the
flexible display substrate 600 is the flexible display substrate
provided by any one of the embodiments of the present disclosure.
The flexible display substrate includes a display region including
a plurality of pixel units, and a peripheral region adjacent to the
display region. The flexible display substrate further includes a
substrate and at least one conductive wire disposed on the
substrate. The conductive wire includes at least two first
conductive portions and at least one second conductive portion, and
two adjacent first conductive portions are electrically connected
through the second conductive portion. The Young's modulus of the
first conductive portions is greater than that of the second
conductive portion and the resistivity of the first conductive
portions is less than that of the second conductive portion. The
flexible display apparatus provided by the embodiment of the
present disclosure has the advantageous effects of the flexible
display substrate provided by the embodiments of the present
disclosure, which may refer to the flexible display substrate
provided by the above-described embodiment and will be omitted
herein. The display apparatus may be any device with a display
function, such as a mobile phone, a desktop computer, a notebook, a
tablet computer, an electronic paper, or the like.
[0047] The foregoing is a further detailed description of the
present disclosure in connection with specific preferred
embodiments, and it is not to be deemed that the specific
implementation of the present disclosure is limited to these
illustrations. It will be apparent to those skilled in the art to
which the present disclosure pertains that various modifications or
substitutions may be made without departing from the spirit of the
present disclosure, and should be considered as falling within the
protective scope of the present disclosure.
* * * * *