CN112582382B

CN112582382B - Display panel and display device

Info

Publication number: CN112582382B
Application number: CN202011417869.8A
Authority: CN
Inventors: 肖灿俊
Original assignee: Tianma Microelectronics Co Ltd
Current assignee: Tianma Microelectronics Co Ltd
Priority date: 2020-12-07
Filing date: 2020-12-07
Publication date: 2023-05-09
Anticipated expiration: 2040-12-07
Also published as: CN112582382A

Abstract

The invention relates to a display panel and a display device, wherein the display panel comprises a display area, and the display panel comprises: a stretchable substrate; the first island structures are arranged on the surface of one side of the stretchable substrate, the first island structures are distributed in the display area in an array mode, pixel units are arranged on one side, away from the stretchable substrate, of at least one first island structure, and electrostatic discharge units are arranged on one side, away from the stretchable substrate, of at least one first island structure; a first connection bridge extendably connecting adjacent first island structures; and the electrostatic discharge unit is electrically connected with at least part of the signal wires. The display panel can improve the antistatic performance of the display area.

Description

Display panel and display device

Technical Field

The present invention relates to the field of display technologies, and in particular, to a display panel and a display device.

Background

Organic light emitting diode (Organic Light Emitting Diode, OLED) display panels have advantages of self-luminescence, ultra-thinness, fast response speed, wide viewing angle, low power consumption, flexibility, foldability, etc., and currently, OLED display panels have been gradually developed from a curved product form into stretchable display products, spherical display products, and wearable display products attached to curved surfaces of human bodies, which requires the display panels to have stretchability.

The realization of stretchable display panels is usually realized by an island bridge structure. Specifically, the transistors and the light emitting devices are placed on the islands, the islands are connected through the bridges, and the areas outside the islands and the bridges are hollowed out. Because the structure and the process are complex, the display area of the stretchable display panel is easy to be damaged by static electricity, and the display effect of the display area is affected.

Disclosure of Invention

The invention aims to provide a display panel and a display device, wherein the display panel can improve the antistatic performance of a display area.

In one aspect, the present invention provides a display panel including a display area, the display panel including: a stretchable substrate; the first island structures are arranged on the surface of one side of the stretchable substrate, the first island structures are distributed in the display area in an array mode, pixel units are arranged on one side, away from the stretchable substrate, of at least one first island structure, and electrostatic discharge units are arranged on one side, away from the stretchable substrate, of at least one first island structure; a first connection bridge extendably connecting adjacent first island structures; and the electrostatic discharge unit is electrically connected with at least part of the signal wires.

On the other hand, the invention also provides a display device which comprises the display panel.

The invention provides a display panel and a display device, wherein the display panel comprises a first island structure, a first connecting bridge and a plurality of signal lines, wherein the first island structure is positioned on one side of a stretchable substrate, the plurality of signal lines are positioned on one side of the first island structure and one side of the first connecting bridge, which is far away from the stretchable substrate, the plurality of first island structures are distributed in an array manner in a display area, the first connecting bridge is connected with adjacent first island structures in a stretchable manner, a pixel unit is arranged on one side, which is far away from the stretchable substrate, of at least one first island structure, an electrostatic discharge unit is arranged on one side, which is far away from the stretchable substrate, of at least one first island structure, and the electrostatic discharge unit is electrically connected with at least part of the signal lines so as to discharge static electricity generated in the display area and improve the antistatic performance of the display area.

Drawings

Features, advantages, and technical effects of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings. In the drawings, like parts are designated with like reference numerals. The figures are not drawn to scale.

Fig. 1 shows a schematic structural diagram of a display panel according to an embodiment of the present invention;

FIG. 2 is a schematic view showing a partial structure of a display area of the display panel shown in FIG. 1;

fig. 3 is a schematic view showing a partial structure of a display area of a display panel according to still another embodiment of the present invention;

fig. 4 shows an enlarged structural schematic diagram of the region B in fig. 3;

fig. 5 illustrates a schematic structure of an electrostatic discharge unit of the first electrostatic discharge island of fig. 4;

fig. 6 shows a schematic structural view of the electrostatic discharge module of fig. 5;

FIG. 7 shows a schematic circuit diagram corresponding to the electrostatic discharge module of FIG. 6;

FIG. 8 is a schematic cross-sectional view showing the first electrostatic discharge island shown in FIG. 3 along the direction A-A;

FIG. 9 shows a schematic circuit diagram of the pixel island of FIG. 5;

fig. 10 is a schematic view showing a cross-sectional structure of the pixel island shown in fig. 3 along a direction C-C;

fig. 11 shows an enlarged schematic structural view of the region D in fig. 1.

Detailed Description

Features and exemplary embodiments of various aspects of the invention are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by showing examples of the invention. In the drawings and the following description, at least some well-known structures and techniques have not been shown in detail in order not to unnecessarily obscure the present invention; also, the dimensions of some of the structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

It is noted that relational terms such as third and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.

It will be understood that when a layer, an area, or a structure is described as being "on" or "over" another layer, another area, it can be referred to as being directly on the other layer, another area, or another layer or area can be included between the layer and the other layer, another area. And if the component is turned over, that layer, one region, will be "under" or "beneath" the other layer, another region.

Fig. 1 is a schematic structural view of a display panel according to an embodiment of the present invention, and fig. 2 is a schematic partial structural view of a display area of the display panel shown in fig. 1.

Referring to fig. 1 and fig. 2 together, an embodiment of the present invention provides a display panel including a display area AA and a non-display area NA, wherein the non-display area NA at least partially surrounds the display area AA.

The display panel includes: a stretchable substrate 10, a first island structure 11, a first connection bridge 12, and a plurality of signal lines 13.

The first island structures 11 are located on one side surface of the stretchable substrate 10, the plurality of first island structures 11 are distributed in an array in the display area AA, a pixel unit 111 is disposed on a side of at least one first island structure 11 away from the stretchable substrate 10, and an electrostatic discharge unit 112 is disposed on a side of at least one first island structure 11 away from the stretchable substrate 10. The first connection bridges 12 are tensilely connected adjacent first island structures 11.

The plurality of signal lines 13 are located at a side of the first island structure 11 and the first connection bridge 12 away from the stretchable substrate 10, and the electrostatic discharge unit 112 is electrically connected to at least a portion of the signal lines 13 among the plurality of signal lines 13.

The stretchable substrate 10 may be made of a Polydimethylsiloxane (PDMS) film, which has good elasticity, and can effectively protect the first island structure 11, the first connection bridge 12, and the plurality of signal lines 13 from being pulled and broken in a certain stretching range.

In some embodiments, the display area AA of the display panel is provided with m rows and n columns of first island structures 11 on one side surface of the stretchable substrate 10, and first connection bridges 12 that stretch-connect adjacent first island structures 11, where m and n are positive integers. A hollowed-out area is formed between the first island structure 11 and the first connection bridge 12 to bear and release the pressure caused by external stretching deformation. Fig. 2 shows only a part of the structure within the display area AA, wherein 8 first island structures 11 including pixel units 111 are disposed around each of the first island structures 11 including the electrostatic discharge unit 112, and the respective first island structures 11 are connected to each other in a stretchable manner through a first connection bridge 12. The front projections of the plurality of signal lines 13 on the stretchable substrate 10 at least partially overlap with the front projections of the first island structures 11 or the first connection bridges 12 on the stretchable substrate 10 to provide signals to the plurality of first island structures 11 within the display area AA. The pixel unit 111 is used for displaying an image, and the electrostatic discharge unit 112 is used for discharging static electricity in the display area AA.

Because the structure and the process of the pixel units 111 in the display area AA are complex, static electricity is easily generated during the production and assembly or transportation, and the static electricity discharging unit 112 can dissipate the static electricity, so that the risk of damage of the display area AA due to static electricity accumulation is reduced, and the stability and the reliability of the display panel are improved.

The display panel provided by the embodiment of the invention comprises a stretchable substrate 10, first island structures 11 positioned on one side surface of the stretchable substrate 10, first connecting bridges 12 and a plurality of signal lines 13 positioned on one side of the first island structures 11 and the first connecting bridges 12 away from the stretchable substrate 10, wherein the first island structures 11 are distributed in an array manner in a display area AA, the first connecting bridges 12 are connected with adjacent first island structures 11 in a stretchable manner, a pixel unit 111 is arranged on one side of at least one first island structure 11 away from the stretchable substrate 10 and used for displaying images, an electrostatic discharge unit 112 is arranged on one side of at least one first island structure 11 away from the stretchable substrate 10, and the electrostatic discharge unit 112 is electrically connected with at least part of the signal lines 13 so as to discharge static electricity generated in the display area AA and improve antistatic performance of the display area AA.

Fig. 3 is a schematic view showing a partial structure of a display area of yet another display panel according to an embodiment of the present invention, and fig. 4 is an enlarged schematic view showing a region B in fig. 3.

In some embodiments, the first island structure 11 in the display area AA includes pixel islands 11a and first electrostatic discharge islands 11b, the electrostatic discharge units 112 are disposed on the first electrostatic discharge islands 11b, the pixel units 111 are disposed on the pixel islands 11a, and the first electrostatic discharge islands 11b are staggered with the pixel islands 11 a.

As shown in fig. 3, the first island structures 11 are arranged in a row-column array in a plane where the first direction X and the second direction Y are located, and the first direction X intersects with the second direction Y. The first electrostatic discharge islands 11b and the pixel islands 11a are arranged alternately in the first direction X or the second direction Y, so that 4 pixel islands 11a are arranged around each first

electrostatic discharge island

11b, and 4 first electrostatic discharge islands 11b are arranged around each pixel island 11 a. The pixel island 11a and the first electrostatic discharge island 11b are connected to each other by a first connection bridge 12. By this arrangement, the antistatic environment around each pixel island 11a can be made uniform, and the uniformity of display in the display area AA can be improved.

As shown in fig. 4, the plurality of signal lines 13 includes a first signal line 131 extending in a first direction X and a second signal line 132 extending in a second direction Y, the first signal line 131 including a data line, a first power line, and a second power line, the second signal line 132 including: a reference voltage line, a scan line, and an optical control signal line. The electrostatic discharge unit 112 is electrically connected to the first signal line 131, and the pixel unit 111 is electrically connected to the first signal line 131 and the second signal line 132, respectively.

Fig. 5 illustrates a schematic structure of an electrostatic discharge unit of the first electrostatic discharge island of fig. 4, fig. 6 illustrates a schematic structure of an electrostatic discharge module of fig. 5, and fig. 7 illustrates a schematic circuit diagram corresponding to the electrostatic discharge module of fig. 6.

In some embodiments, each electrostatic discharge unit 112 includes at least one electrostatic discharge module EM, where the electrostatic discharge module EM includes an input terminal E3, a first voltage terminal E1, and a second voltage terminal E2, the input terminal E3 is electrically connected to the data line D, and the first voltage terminal E1 and the second voltage terminal E2 are respectively electrically connected to constant voltage sources with different potentials.

In some embodiments, the first signal line 131 further includes a first level signal line and a second level signal line, where the first level signal line and the second level signal line respectively provide level signals with different potentials, the first voltage terminal E1 is electrically connected to the first level signal line, and the second voltage terminal E2 is electrically connected to the second level signal line. Each of the electrostatic discharge modules EM may supply a stable voltage through the first and second level signal lines of the first signal lines 131, and introduce the static electricity generated by the pixel units 111 in the pixel islands 11a to the electrostatic discharge module EM through the data lines D of the first signal lines 131 and discharge the static electricity.

Since the first power line P1 and the second power line P2 in the first signal line 131 can provide the stable voltage for the pixel unit 111, the first power line P1 and the second power line P2 can also provide the stable voltage for the electrostatic discharge unit 112 at the same time in order to reduce the number of the first signal lines 131. Optionally, the first voltage terminal E1 is electrically connected to the first power line P1, and the second voltage terminal E2 is electrically connected to the second power line P2.

As shown in fig. 5 and 6, the electrostatic discharge unit 112 includes three electrostatic discharge modules EM, which are disposed corresponding to each sub-pixel SP in the pixel unit 111. Each electrostatic discharge module EM includes an input terminal E3, a first voltage terminal E1, and a second voltage terminal E2, and the first signal line 131 includes 3 data lines D, a first power line P1, and a second power line P2. The first power line P1 of the first signal line 131 is electrically connected to the first voltage terminal E1 of each of the electrostatic discharge modules EM, and the second power line P2 is electrically connected to the second voltage terminal E2 of each of the electrostatic discharge modules EM, and each of the data lines is electrically connected to one of the electrostatic discharge modules EM, thereby discharging the static electricity generated by each of the sub-pixels SP.

In the embodiment of the present invention, each electrostatic discharge module EM may be equivalent to a circuit composed of 2 transistors. The working principle of the electrostatic discharge module EM is described in detail below with reference to fig. 7.

As shown in fig. 7, the electrostatic discharge module EM includes a first transistor T1, a second transistor T2, and a node N, where the node N is electrically connected between the first transistor T1 and the second transistor T2 and is electrically connected to the input terminal E3, the first terminal and the control terminal of the first transistor T1 are electrically connected to the first voltage terminal E1, the second terminal of the first transistor T1 is electrically connected to the node N, the first terminal of the second transistor T2 is electrically connected to the node N, the second terminal of the second transistor T2 is electrically connected to the second voltage terminal E2, and the control terminal of the second transistor T2 is electrically connected to the input terminal E3. Optionally, the first voltage terminal E1 is a high level terminal, and the second voltage terminal E2 is a low level terminal.

The electrostatic discharge module EM is used to ensure that the voltage value in the first signal line 131 is not too high or too low when an abnormality occurs in the circuit. The method comprises the following steps:

when the voltage of the input terminal E3 is greater than the difference between the first voltage terminal E1 and the voltage threshold, the first transistor T1 is turned on, the second transistor T2 is turned off, and the input terminal E3 discharges to the first voltage terminal E1.

When the voltage of the input terminal E3 is less than the sum of the second voltage terminal E2 and the voltage threshold, the first transistor T1 is turned off, the second transistor T2 is turned on, and the input terminal E3 discharges to the second voltage terminal E2.

When the voltage of the input terminal E3 is greater than the sum of the second voltage terminal E2 and the voltage threshold and less than the difference between the first voltage terminal E1 and the voltage threshold, the first transistor T1 is turned off and the second transistor T2 is turned off.

In some embodiments, as shown in fig. 4 and 5, among the plurality of signal lines 13 located at a side of the first electrostatic discharge island 11b remote from the stretchable substrate 10, at least a portion of the second signal line 132 is layered with the first signal line 131, and the second signal line 132 overlaps with a orthographic projection portion of the first signal line 131 on the stretchable substrate 10.

Since the second signal line 132 is used to provide the pixel unit 111 with an electrical signal, it is not necessary to electrically connect with the electrostatic discharge unit 112, and in order to facilitate the electrical connection of the plurality of pixel units 111 through the second signal line 132, the second signal line 132 extends only through the first electrostatic discharge island 11b at a position far from the electrostatic discharge module EM, and is layered with the first signal line 131, preventing the two from being conducted. In addition, the front projection portion of the first signal line 131 and the second signal line 132 on the stretchable substrate 10 overlap to save the space of the first electrostatic discharge island 11b.

Fig. 8 is a schematic cross-sectional structure of the first electrostatic discharge island shown in fig. 3 along the direction A-A.

As shown in fig. 8, the display panel includes a stretchable substrate 10, and a first electrostatic discharge island 11b located on a side surface of the stretchable substrate 10, where the first electrostatic discharge island 11b includes a flexible substrate 1, a device layer 2 and an encapsulation layer 4, the device layer 2 is located on the flexible substrate 1, the encapsulation layer 4 is located on a side of the device layer 2 facing away from the flexible substrate 1, and the material of the flexible substrate 1 may be polyimide. The electrostatic discharge unit 112 of the first electrostatic discharge island 11 includes a plurality of electrostatic discharge modules EM, each of which may be equivalent to a circuit composed of a first transistor T1 and a second transistor T2. The first transistor T1 and the second transistor T2 are located at the device layer 2.

Specifically, the device layer 2 includes a gate metal layer 2a, a capacitor metal layer 2b, and a source-drain metal layer 2c sequentially disposed along a direction away from the flexible substrate 1, where the gate metal layer 2a is a metal conductive layer where gates of the first transistor T1 and the second transistor T2 are located, the capacitor metal layer 2b is a metal conductive layer where one of the flexible substrates of the capacitor is located, and the source-drain metal layer 2c is a metal conductive layer where sources and drains of the first transistor T1 and the second transistor T2 are located. The first signal line 131 is located in at least one of the source-drain metal layer 2c, the gate metal layer 2a, and the capacitor metal layer 2b, for example, the data line D is located in the source-drain metal layer 2c.

Fig. 9 shows a schematic circuit diagram of the pixel island of fig. 5, and fig. 10 shows a schematic cross-sectional structure of the pixel island of fig. 3 along the direction C-C.

In some embodiments, as shown in fig. 9, the pixel unit 111 of each pixel island 11a includes at least two sub-pixels SP, the first signal line 131 includes at least two data lines D corresponding to the at least two sub-pixels SP, each electrostatic discharge unit 112 includes the number of electrostatic discharge modules EM corresponding to the number of the data lines D, and each electrostatic discharge module EM is electrically connected to a corresponding one of the data lines D.

As shown in fig. 5 and 9, in the plurality of pixel islands 11a in the display area AA, the same data line D is shared by the pixel circuits corresponding to the sub-pixels SP of the same color in the same column in the second direction Y. Taking the pixel island 11a of the RGGB light emitting structure as an example, the pixel unit 111 includes one red sub-pixel, two green sub-pixels, and one blue sub-pixel, the first signal line 131 includes four data lines D corresponding to three colors of sub-pixels, each electrostatic discharge unit 112 may include three electrostatic discharge modules EM, each of which is electrically connected to the data line D corresponding to one color, for example, one data line D corresponding to two green sub-pixels is electrically connected to one electrostatic discharge module EM.

The data line D, the first power line P1, and the second power line P2 in the first signal line 131 are electrically connected to the pixel unit 11, respectively, and the reference voltage line ReV, the scan line S, and the light control signal line E in the second signal line 132 are electrically connected to the pixel unit 11, respectively.

As shown in fig. 10, the display panel includes a stretchable substrate 10, a pixel island 11a located on one side surface of the stretchable substrate 10, the pixel island 11a including a flexible substrate 1, a device layer 2, a light emitting element layer 3 and an encapsulation layer 4, the device layer 2 being located on the flexible substrate 1, the light emitting element layer 3 being located on a side of the device layer 2 facing away from the flexible substrate 1, and the encapsulation layer 4 being located on a side of the light emitting element layer 3 facing away from the flexible substrate 1. The device layer 2 of the pixel island 11a is located at the same layer as the device layer 2 of the first electrostatic discharge island 11b.

The light emitting element layer 3 includes a plurality of first electrodes 3a, an electroluminescent layer 3c, and a second electrode layer 3b which are sequentially disposed. The electroluminescent layer 3c includes a plurality of light emitting structures arranged in an array. The second electrode layer 3b is located on the side of the electroluminescent layer 3c facing away from the flexible substrate 1. Each first electrode 3a forms one sub-pixel SP with the corresponding light emitting structure and the second electrode layer 3b of the corresponding region of the light emitting structure. Either one of the first electrode 3a and the second electrode layer 3b is an anode, and the other is a cathode. The pixel unit 111 includes at least two sub-pixels SP and corresponding pixel circuits.

Further, the light emitting element layer 3 further includes a pixel defining layer 3d. The pixel defining layer 3d includes a plurality of pixel openings 3e, the light emitting structure is located within the pixel openings 3e, and the first electrode 3a is disposed corresponding to the pixel openings 3 e. The flexible substrate 1 is provided with a pixel circuit. In this embodiment, the pixel circuit includes a thin film transistor and a capacitor. The pixel circuit is electrically connected to the sub-pixel SP defined by each pixel opening 3e to drive the sub-pixel SP to emit light.

The device layer 2 comprises a gate metal layer 2a, a capacitor metal layer 2b and a source-drain metal layer 2c which are sequentially arranged along the direction far away from the flexible substrate 1, wherein the gate metal layer 2a is a metal conductive layer where a gate of a thin film transistor is located, the capacitor metal layer 2b is a metal conductive layer where one flexible substrate of a capacitor is located, and the source-drain metal layer 2c is a metal conductive layer where a source and a drain of the thin film transistor are located. The plurality of signal lines 13 are located in at least one of the source-drain metal layer 2c, the gate metal layer 2a, and the capacitor metal layer 2 b.

Fig. 11 shows an enlarged schematic structural view of the region D in fig. 2.

In some embodiments, the non-display area NA of the display panel includes a plurality of second island structures 21 and second connection bridges 22 on one side surface of the stretchable substrate 10, the plurality of second island structures 21 are distributed in an array in the non-display area NA, adjacent second island structures 21 and between the second island structures 21 and the first island structures 11 are stretchably connected through the second connection bridges 22, and at least one second island structure 21 is provided with an electrostatic discharge unit 112 thereon.

Alternatively, the second island structure 21 includes a circuit island 21a and a second electrostatic discharge island 21b, the circuit island 21a being provided with a gate driving circuit, the second electrostatic discharge island 21b being provided with an electrostatic discharge unit 112.

As shown in fig. 11, the second island structures 21 in s rows and t columns and the second connection bridges 22 in s and t being positive integers are disposed on one side surface of the stretchable substrate 10 in the non-display area NA of the display panel and are stretching-connected to the adjacent second island structures 21. A hollowed-out area is formed between the second island structure 21 and the second connection bridge 22 to bear and release the pressure caused by external stretching deformation. Fig. 11 shows a part of the structure in the display area AA and the non-display area NA.

Alternatively, the second island structures 21 are arranged in a row-column array in a plane in which the first direction X and the second direction Y lie. The second island structure 21 includes a circuit island 21a and a second electrostatic discharge island 21b, and both between the circuit island 21a and the second electrostatic discharge island 21b and between the circuit island 21a and the first electrostatic discharge island 11b or the pixel island 11a can be connected in a stretchable manner by a second connection bridge 22.

The front projections of the plurality of signal lines 13 on the stretchable substrate 10 at least partially overlap with the front projections of the second island structures 21 or the second connection bridges 22 on the stretchable substrate 10 to provide signals to the plurality of second island structures 21 within the non-display area NA. The circuit island 21a is used for providing a gate driving circuit for the pixel island 11a, and the structure and working principle of the second electrostatic discharge island 21b are similar to those of the first electrostatic discharge island 11b, so as to discharge static electricity in the non-display area NA and improve the antistatic performance of the non-display area NA.

In addition, the embodiment of the invention also provides a preparation method of the display panel, which comprises the following steps:

step S1: the flexible substrate 1 is formed on a hard substrate.

In this embodiment, the rigid substrate may be glass, and the flexible substrate 1 is polyimide.

Step S2: forming a display area AA and a non-display area NA surrounding the display area AA on the flexible substrate 1, wherein the display area AA is formed to include a plurality of first island structures 11 arranged in an array, first connection bridges 12, and a plurality of signal lines 13, the adjacent first island structures 11 being connected in a stretchable manner by the first connection bridges 12, the plurality of signal lines 13 extending between the first island structures 11 and the first connection bridges 12; at least one first island structure 11 is provided with a pixel unit 111, at least one first island structure 11 is provided with an electrostatic discharge unit 112, and the electrostatic discharge unit 112 is electrically connected to at least part of the signal lines 13 among the plurality of signal lines 13.

Step S3: and stripping the hard substrate.

In this embodiment, the flexible substrate 1 can be peeled off from the rigid substrate by a laser peeling process, and then the first island structure 11 and the flexible substrate 1 of the first connection bridge 12 are attached to the stretchable substrate 10 by a glue to form an island bridge structure of the display panel, so as to effectively improve the stretching resistance of the display panel.

In addition, the embodiment of the invention also provides a display device which comprises the display panel. The display device not only can bear external stretching deformation, but also can improve the antistatic performance of the display area AA, and effectively improve the display effect and the user experience of the display device.

While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims

1. A display panel, the display panel comprising a display area, the display panel comprising:

a stretchable substrate;

the first island structures are arranged on the surface of one side of the stretchable substrate, a plurality of the first island structures are distributed in the display area in an array mode, pixel units are arranged on one side, away from the stretchable substrate, of at least one first island structure, and electrostatic discharge units are arranged on one side, away from the stretchable substrate, of at least one first island structure;

a first bridge connecting the adjacent first island structures in a stretchable manner;

a plurality of signal lines located at a side of the first island structure and the first connection bridge away from the stretchable substrate, the electrostatic discharge unit being electrically connected to at least a part of the signal lines; each electrostatic discharge unit comprises at least one electrostatic discharge module, the electrostatic discharge module comprises an input end, a first voltage end and a second voltage end, the input end is electrically connected with the signal line, and the first voltage end and the second voltage end are respectively electrically connected to constant voltage sources with different potentials.

2. The display panel of claim 1, wherein the first island structure comprises pixel islands and first electrostatic discharge islands, the electrostatic discharge units are disposed on the first electrostatic discharge islands, the pixel units are disposed on the pixel islands, and the first electrostatic discharge islands are staggered with the pixel islands.

3. The display panel according to claim 1 or 2, wherein the plurality of signal lines include a first signal line extending in a first direction and a second signal line extending in a second direction, the first signal line including a data line, a first power line, and a second power line, the second signal line including: a reference voltage line, a scan line, and a light control signal line, the first direction intersecting the second direction;

the electrostatic discharge unit is electrically connected with the first signal line, and the pixel unit is electrically connected with the first signal line and the second signal line respectively.

4. The display panel according to claim 3, wherein the first signal line further includes a first level signal line and a second level signal line, the first level signal line and the second level signal line respectively supply level signals having different potentials, the first voltage terminal is electrically connected to the first level signal line, and the second voltage terminal is electrically connected to the second level signal line.

5. The display panel of claim 3, wherein the first voltage terminal is electrically connected to the first power line and the second voltage terminal is electrically connected to the second power line.

6. The display panel of claim 1, wherein the electrostatic discharge module comprises a first transistor and a second transistor and a node, the node being electrically connected between the first transistor and the second transistor and being electrically connected to the input terminal, a first terminal and a control terminal of the first transistor being electrically connected to the first voltage terminal, a second terminal of the first transistor being electrically connected to the node, a first terminal of the second transistor being electrically connected to the node, a second terminal of the second transistor being electrically connected to the second voltage terminal, and a control terminal of the second transistor being electrically connected to the input terminal.

7. A display panel according to claim 3, wherein each of the pixel units includes at least two sub-pixels, the first signal line includes at least two kinds of the data lines corresponding to the at least two sub-pixels, each of the electrostatic discharge units includes a number of the electrostatic discharge modules corresponding to the number of the data lines, and each of the electrostatic discharge modules is electrically connected to a corresponding one of the data lines.

8. A display panel according to claim 3, wherein at least a part of the second signal lines among the plurality of signal lines located on a side of the first island structure remote from the stretchable substrate are layered with the first signal lines, and the second signal lines overlap with orthographic projection portions of the first signal lines on the stretchable substrate.

9. The display panel of claim 1, further comprising a non-display region at least partially surrounding the display region, the non-display region comprising a plurality of second island structures and second connection bridges on a side surface of the stretchable substrate, the plurality of second island structures being distributed in an array in the non-display region, adjacent second island structures being connected between the second island structures and the first island structures in a stretchable manner by the second connection bridges, at least one of the second island structures being provided with the electrostatic discharge unit.

10. The display panel according to claim 9, wherein the second island structure includes a circuit island provided with a gate driving circuit and a second electrostatic discharge island provided with the electrostatic discharge unit thereon.

11. A display device comprising the display panel according to any one of claims 1 to 10.