FLEXIBLE DISPLAY SUBSTRATE AND FLEXIBLE DISPLAY APPARATUS
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.
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This application claims priority under 35 USC § 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 FIELDThe present disclosure relates to the display field, and more particular y a flexible display substrate and a flexible display apparatus.
BACKGROUNDA 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.
Reference is made to
In view of the above, the present disclosure provides a flexible display substrate and a flexible display apparatus.
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.
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.
Compared with the related art, the present disclosure has at least one of the outstanding advantages described below.
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.
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.
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.
With reference to
As shown in
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.
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.
In some alternative implementations, in the flexible display substrate shown in
In some alternative implementations, reference is made to
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.
In some alternative implementations, reference is made to
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.
In some alternative implementations, reference is made to
In some alternative implementations, for example, in the flexible display substrate provided by the embodiment of
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.
In some alternative implementations, reference is made to
In some alternative implementations, reference is made to
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.
An embodiment of the present disclosure further provides a flexible display apparatus. Reference is made to
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.
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.
Type: Application
Filed: Jun 27, 2017
Publication Date: Aug 30, 2018
Applicant: Shanghai Tianma Micro-Electronics Co., Ltd. (Shanghai)
Inventors: Yingteng Zhai (Shanghai), Yong Wu (Shanghai)
Application Number: 15/634,816