CN112582382A

CN112582382A - Display panel and display device

Info

Publication number: CN112582382A
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: 2021-03-30
Anticipated expiration: 2040-12-07
Also published as: CN112582382B

Abstract

The invention relates to a display panel and a display device, the display panel comprises a display area, the display panel comprises: a stretchable substrate; the first island structures are positioned on the surface of one side of the stretchable substrate, the first island structures are distributed in the display area in an array mode, a pixel unit is arranged on one side, away from the stretchable substrate, of at least one first island structure, and an electrostatic discharge unit is arranged on one side, away from the stretchable substrate, of at least one first island structure; a first connecting bridge tensibly connecting adjacent first island structures; and a plurality of signal lines located on 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 some of the plurality of signal lines. 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

An Organic Light Emitting Diode (OLED) display panel has the advantages of self-luminescence, ultra-lightness, thinness, fast response speed, wide viewing angle, low power consumption, flexibility, foldability, etc., and the OLED display panel has been gradually developed into a stretchable display product, a spherical display product and a wearable display product fitting a human body curved surface from a curved product form at present, which requires that the display panel has a stretchable capability.

The implementation of the stretchable display panel is typically achieved by an island bridge structure. Specifically, the transistor and the light emitting device are placed on an island, the island is connected with the island through a bridge, and the area outside the island and the bridge is hollowed out. Because the structure and the process are complex, the display area of the stretchable display panel is easily damaged by static electricity, and the display effect of the display area is influenced.

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, the display panel including a display area, the display panel including: a stretchable substrate; the first island structures are positioned on the surface of one side of the stretchable substrate, the first island structures are distributed in the display area in an array mode, the side, away from the stretchable substrate, of at least one first island structure is provided with a pixel unit, and the side, away from the stretchable substrate, of at least one first island structure is provided with an electrostatic discharge unit; a first connecting bridge tensibly connecting adjacent first island structures; and a plurality of signal lines located on 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 some of the plurality of signal lines.

In another aspect, the present invention further provides a display device including the display panel as described above.

The invention provides a display panel and a display device, wherein the display panel comprises a first island structure positioned on one side of a stretchable substrate, a first connecting bridge and a plurality of signal lines positioned on one sides of the first island structure and the first connecting bridge far away from the stretchable substrate, the plurality of first island structures are distributed in a display area in an array mode, the first connecting bridge is connected with the adjacent first island structures in a stretchable mode, a pixel unit is arranged on one side of at least one first island structure far away from the stretchable substrate, an electrostatic discharge unit is arranged on one side of at least one first island structure far away from the stretchable substrate, and the electrostatic discharge unit is electrically connected with at least part of signal lines to discharge static electricity generated by 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 provided with like reference numerals. The drawings are not drawn to scale.

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

FIG. 2 is a partial schematic structural diagram of a display region of the display panel shown in FIG. 1;

FIG. 3 is a schematic diagram illustrating a partial structure of a display area of another display panel according to an embodiment of the present invention;

fig. 4 is an enlarged schematic view of a region B in fig. 3;

fig. 5 is a schematic structural view showing an electrostatic discharge unit of the first electrostatic discharge island in fig. 4;

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

fig. 7 shows a corresponding circuit schematic of the electrostatic discharge module of fig. 6;

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

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

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

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

Detailed Description

Features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present 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 present invention by illustrating examples of the present invention. In the drawings and the following description, at least some well-known structures and techniques have not been shown in detail in order to avoid unnecessarily obscuring 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, herein, relational terms such as third and second, and the like may be 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 an element is referred to as being "on" or "over" another layer, region or layer in describing its structure, it can be directly on the other layer, region or layer or intervening layers or regions may also be present. Also, if the component is turned over, one layer or region may be "under" or "beneath" another layer or region.

Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention, and fig. 2 is a schematic structural diagram of a part of a display region of the display panel shown in fig. 1.

Referring to fig. 1 and fig. 2 together, an embodiment of the invention provides a display panel, which includes 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 a side surface of the stretchable substrate 10, the plurality of first island structures 11 are distributed in the display area AA in an array, 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 may tensibly connect adjacent first island structures 11.

The plurality of signal lines 13 are located on 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 some of 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 connecting bridge 12, and the plurality of signal lines 13 from being pulled and broken within a certain stretching range.

In some embodiments, m rows and n columns of the first island structures 11 and the first connecting bridges 12 that connect the adjacent first island structures 11 in a stretchable manner are disposed on one side surface of the stretchable substrate 10 in the display area AA of the display panel, where m and n are positive integers. A hollow area is formed between the first island structure 11 and the first connecting bridge 12 to bear and release the pressure caused by the external tensile deformation. Fig. 2 shows only a part of the structures within the display area AA, wherein 8 first island structures 11 including pixel cells 111 are disposed around each first island structure 11 including an electrostatic discharge cell 112, and the respective first island structures 11 are tensibly connected to each other by a first connection bridge 12. An orthogonal projection of the plurality of signal lines 13 on the stretchable substrate 10 at least partially overlaps with an orthogonal projection of the first island structure 11 or the first connection bridge 12 on the stretchable substrate 10, thereby providing 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 static electricity discharging unit 112 is used for discharging static electricity in the display area AA.

Because the structure and process of the pixel unit 111 in the display area AA are complex, static electricity is easily generated during production, assembly or transportation, and the static electricity releasing unit 112 can dissipate the static electricity, thereby reducing the risk of damage to the display area AA due to static electricity accumulation and improving the stability and reliability of the display panel.

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

Fig. 3 is a partial structural diagram of a display region of another display panel provided in accordance with an embodiment of the present invention, and fig. 4 is an enlarged structural diagram of a region B in fig. 3.

In some embodiments, the first island structure 11 in the display area AA includes a pixel island 11a and a first electrostatic discharge island 11b, the first electrostatic discharge island 11b has an electrostatic discharge unit 112 disposed thereon, the pixel island 11a has a pixel unit 111 disposed thereon, and the first electrostatic discharge island 11b is staggered with the pixel island 11 a.

As shown in fig. 3, the first island structures 11 are arranged in a row-column array in a plane in which a first direction X and a 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 stretchable first connection bridge 12. With 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 the first direction X and a second signal line 132 extending in the second direction Y, the first signal line 131 includes a data line, a first power line, and a second power line, and the second signal line 132 includes: reference voltage lines, scan lines, and light control signal lines. 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 structural diagram of an electrostatic discharge unit of the first electrostatic discharge island in fig. 4, fig. 6 illustrates a schematic structural diagram of an electrostatic discharge module in fig. 5, and fig. 7 illustrates a schematic circuit diagram corresponding to the electrostatic discharge module in fig. 6.

In some embodiments, each of the electrostatic discharge units 112 includes at least one electrostatic discharge module EM, and 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 electrically connected to constant voltage sources having different potentials, respectively.

In some embodiments, the first signal line 131 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 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, introduce static electricity generated from the pixel cells 111 in the pixel island 11a to the electrostatic discharge modules EM through the data lines D of the first signal lines 131, and discharge the static electricity.

Since the first and second power lines P1 and P2 of the first signal line 131 can provide a stable voltage to the pixel unit 111, the first and second power lines P1 and P2 can also provide a stable voltage to 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 blocks EM disposed corresponding to each sub-pixel SP in the pixel unit 111. Each of the electrostatic discharge modules 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, one first power line P1, and one second power line P2. The first power line P1 in the first signal line 131 is electrically connected to the first voltage terminal E1 of each electrostatic discharge module EM, respectively, the second power line P2 is electrically connected to the second voltage terminal E2 of each electrostatic discharge module EM, respectively, and each data line is electrically connected to one of the electrostatic discharge modules EM, thereby discharging static electricity generated by each sub-pixel 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 electrically connected between the first transistor T1 and the second transistor T2 and electrically connected to the input terminal E3, a first terminal and a control terminal of the first transistor T1 are electrically connected to the first voltage terminal E1, a second terminal of the first transistor T1 is electrically connected to the node N, a first terminal of the second transistor T2 is electrically connected to the node N, a second terminal of the second transistor T2 is electrically connected to the second voltage terminal E2, and a 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 function of the electrostatic discharge module EM is to ensure that the voltage value in the first signal line 131 is not too high or too low when the circuit is abnormal. The method comprises the following specific 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 at the input terminal E3 is greater than the sum of the voltage threshold and the second voltage terminal E2, and is less than the difference between the voltage threshold and the first voltage terminal E1, 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, of the plurality of signal lines 13 located on the side of the first electrostatic discharge island 11b away 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 an 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 electrically connect the plurality of pixel units 111 through the second signal line 132, the second signal line 132 extends only at a position on the first electrostatic discharge island 11b away from the electrostatic discharge module EM, and is layered with the first signal line 131, preventing conduction therebetween. In addition, the first signal line 131 overlaps the orthographic projection portion of the second signal line 132 on the stretchable substrate 10 to save the space of the first electrostatic discharge island 11 b.

Fig. 8 is a schematic cross-sectional view of the first electrostatic discharge island shown in fig. 3 along a 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 a 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 the first transistor T1 and the second transistor T2. The first transistor T1 and the second transistor T2 are located at the device level 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 in 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 2 c.

Fig. 9 illustrates a schematic circuit diagram of the pixel island in fig. 5, and fig. 10 illustrates a schematic sectional structure of the pixel island in the direction C-C shown in fig. 3.

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 kinds of 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 with the pixel circuits corresponding to the same color sub-pixels SP 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 the three color sub-pixels, and 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 the two green sub-pixels is electrically connected to one electrostatic discharge module EM.

The data line D, the first power supply line P1, and the second power supply line P2 in the first signal line 131 are electrically connected to the pixel unit 11, respectively, and the reference voltage line ReV, the scanning 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, and a pixel island 11a located on one side surface of the stretchable substrate 10, where the pixel island 11a includes a flexible substrate 1, a device layer 2, a light emitting element layer 3, and an encapsulation layer 4, the device layer 2 is located on the flexible substrate 1, the light emitting element layer 3 is located on a side of the device layer 2 away from the flexible substrate 1, and the encapsulation layer 4 is located on a side of the light emitting element layer 3 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 11 b.

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 provided in this order. 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 and the corresponding light emitting structure and the second electrode layer 3b of the corresponding region of the light emitting structure form a sub-pixel SP. 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 also includes a pixel defining layer 3 d. The pixel defining layer 3d includes a plurality of pixel openings 3e, the light emitting structure is located in the pixel openings 3e, and the first electrode 3a is disposed corresponding to the pixel openings 3 e. A pixel circuit is provided on the flexible substrate 1. 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, the gate metal layer 2a is a metal conducting layer where a gate of the thin film transistor is located, the capacitor metal layer 2b is a metal conducting layer where one of the flexible substrates of the capacitor is located, and the source drain metal layer 2c is a metal conducting 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 capacitance metal layer 2 b.

Fig. 11 shows an enlarged structural view of a 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 a side surface of the stretchable substrate 10, the plurality of second island structures 21 are distributed in the non-display area NA in an array, adjacent second island structures 21 are connected to each other in a stretchable manner through the second connection bridges 22, and the second island structures 21 and the first island structures 11 are connected in a stretchable manner, and at least one second island structure 21 is provided with the electrostatic discharge unit 112.

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

As shown in fig. 11, the second island structure 21 of s rows and t columns and the second connection bridge 22 which connects the adjacent second island structures 21 in a stretchable manner are disposed on one side surface of the stretchable substrate 10 in the non-display area NA of the display panel, and s and t are positive integers. A hollow area is formed between the second island structure 21 and the second connecting bridge 22 to bear and release the pressure caused by the external tensile 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 the circuit island 21a and the second electrostatic discharge island 21b and the circuit island 21a and the first electrostatic discharge island 11b or the pixel island 11a may be connected by the second connection bridge 22 in a stretchable manner.

An orthogonal projection of the plurality of signal lines 13 on the stretchable substrate 10 at least partially overlaps with an orthogonal projection of the second island structure 21 or the second connecting bridge 22 on the stretchable substrate 10, thereby providing signals to the plurality of second island structures 21 within the non-display area NA. The circuit island 21a is used to provide a gate driving circuit for the pixel island 11a, and the second electrostatic discharge island 21b is similar to the first electrostatic discharge island 11b in structure and working principle, and is used to discharge static electricity in the non-display area NA, thereby improving the anti-static performance of the non-display area NA.

In addition, an embodiment of the present invention further provides a method for manufacturing the display panel, including:

step S1: a flexible substrate 1 is formed on a rigid substrate.

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

Step S2: forming a display area AA, 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 connecting bridges 12, and a plurality of signal lines 13, adjacent first island structures 11 are connected by the first connecting bridges 12 in a stretchable manner, and the plurality of signal lines 13 extend between the first island structures 11 and the first connecting 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 a part of the signal lines 13 among the plurality of signal lines 13.

Step S3: and stripping the hard substrate.

In this embodiment, the hard substrate may be peeled off from the flexible substrate 1 by a laser peeling process, and then the flexible substrate 1 of the first island structure 11 and the first connecting bridge 12 is attached to the stretchable substrate 10 by a colloid, so as to form an island bridge structure of the display panel, thereby effectively improving the stretch-resistant performance of the display panel.

In addition, the embodiment of the invention also provides a display device which comprises the display panel. The display device can bear external stretching deformation, can also improve the antistatic performance of the display area AA, and effectively improves 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 embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

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

a stretchable substrate;

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

a first connecting bridge tensibly connecting adjacent ones of the first island structures;

a plurality of signal lines on a side of the first island structure and the first connection bridge away from the stretchable substrate, the electrostatic discharge unit being electrically connected with at least some of the signal lines.

2. The display panel according to claim 1, wherein the first island structure includes a pixel island and a first electrostatic discharge island, the electrostatic discharge unit is disposed on the first electrostatic discharge island, the pixel unit is disposed on the pixel island, and the first electrostatic discharge island and the pixel island are alternately disposed.

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 supply line, and a second power supply 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 to the first signal line, and the pixel unit is electrically connected to the first signal line and the second signal line, respectively.

4. The display panel according to claim 3, wherein each of the ESD releasing units comprises at least one ESD releasing module, and the ESD releasing module comprises an input terminal, a first voltage terminal and a second voltage terminal, the input terminal is electrically connected to the data line, and the first voltage terminal and the second voltage terminal are respectively electrically connected to constant voltage sources with different potentials.

5. The display panel according to claim 4, wherein the first signal lines further include 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.

6. The display panel according to claim 4, wherein the first voltage terminal is electrically connected to the first power line, and wherein the second voltage terminal is electrically connected to the second power line.

7. The display panel according to claim 4, wherein the electrostatic discharge module includes a first transistor, a second transistor, and a node, the node is electrically connected between the first transistor and the second transistor and electrically connected to the input terminal, a first terminal and a control terminal of the first transistor are electrically connected to the first voltage terminal, a second terminal of the first transistor is electrically connected to the node, a first terminal of the second transistor is electrically connected to the node, a second terminal of the second transistor is electrically connected to the second voltage terminal, and a control terminal of the second transistor is electrically connected to the input terminal.

8. The display panel according to claim 4, 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, the number of the electrostatic discharge modules included in each of the electrostatic discharge units corresponds 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.

9. The display panel according to claim 3, wherein at least part of the second signal line is arranged in layers with the first signal line, and the second signal line overlaps with an orthographic projection portion of the first signal line on the stretchable substrate, among the plurality of signal lines on a side of the first electrostatic discharge island away from the stretchable substrate.

10. The display panel according to claim 1, further comprising a non-display region at least partially surrounding the display region, wherein the non-display region comprises a plurality of second island structures and second connecting bridges on a side surface of the stretchable substrate, the plurality of second island structures are distributed in the non-display region in an array, adjacent second island structures and the first island structures are connected in a stretchable manner through the second connecting bridges, and the electrostatic discharge unit is disposed on at least one of the second island structures.

11. The display panel according to claim 10, wherein the second island structure includes a circuit island provided with a gate driver circuit and a second electrostatic discharge island on which the electrostatic discharge unit is provided.

12. A display device characterized by comprising the display panel according to any one of claims 1 to 11.