Display panel and display device

Abstract

The present application discloses a display panel and a display device, which mainly relate to the field of display technology. The display panel includes a display area and a non-display area. The non-display area is arranged around the display area. A binding area is arranged on the non-display area. A plurality of binding terminals are arranged in the binding area. The plurality of binding terminals are used to make electrical connections with the outside world. The display panel also includes a photosensitive adhesive covering the binding area. The material of the photosensitive adhesive includes acrylic, a photoinitiator and an auxiliary agent. A phase change energy storage material is also added to the photosensitive adhesive. A plurality of virtual terminals are also arranged in the binding area. The virtual terminals are arranged around the binding terminals. Through the above design, after water vapor invades the interior of the photosensitive adhesive, the phase change energy storage material generates heat, causing the water vapor to evaporate quickly, preventing the water vapor from reaching the binding terminal through the photosensitive adhesive; and the virtual terminal blocks the water vapor entering the binding area from the connection between the photosensitive adhesive and the glass substrate, preventing the water vapor from corroding the binding terminal in all directions.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] Binding terminals are usually provided at the edge of the display panel. The binding terminals are used to bind and connect with the external cover chip film or flexible circuit board to realize the electrical connection between the display panel and the outside world. In order to prevent the binding terminals from being corroded by the external environment moisture and causing problems in signal transmission, manufacturers will apply photosensitive adhesive on the binding terminals to protect them.

[0003] However, when the display panel works in a high humidity environment for a long time, water vapor will not only enter the binding area along the connection between the photosensitive adhesive and the glass substrate, but also invade the interior of the photosensitive adhesive and reach the binding terminals through the photosensitive adhesive. There is still a risk of corrosion of the binding terminals. Therefore, how to improve the entry of external water vapor into the binding terminals and cause corrosion of the metal circuits has become a technical problem that needs to be urgently solved in this field. Summary of the invention

[0004] The purpose of this application is to provide a display panel and a photosensitive adhesive to enhance the waterproof effect of the photosensitive adhesive, improve the waterproof ability of the display panel, and ensure the stability of the connection between the binding terminal and the outside world.

[0005] The present application discloses a display panel, which includes a display area and a non-display area, wherein the non-display area is arranged around the display area, a binding area is arranged on the non-display area, and a plurality of binding terminals are arranged in the binding area, and the plurality of binding terminals are used for electrical connection with the outside world, the display panel also includes a photosensitive adhesive, the material of the photosensitive adhesive includes acrylic, a photoinitiator and an auxiliary agent, the photosensitive adhesive covers the binding area, and a phase change energy storage material is also added to the photosensitive adhesive; a plurality of virtual terminals are also arranged in the binding area, and the virtual terminals are arranged around the four sides of the binding terminals.

[0006] Optionally, the virtual terminal is made of phase change energy storage material.

[0007] Optionally, the phase change energy storage material includes at least one of graphene, paraffin, cross-linked high-density polyethylene, polyols, inorganic salts, polyethylene glycol, polyvinyl alcohol, and polyurethane.

[0008] Optionally, the photosensitive adhesive includes a first layer, a second layer and a third layer which are stacked, the first layer being arranged on a side of the second layer close to the binding terminal, and the third layer being arranged on a side of the second layer away from the binding terminal; the material of the first layer includes acrylate, photoinitiator and additives, the material of the second layer is a phase change energy storage material, the material of the third layer includes acrylate, photoinitiator and additives, and the height of the first layer is greater than the height of the binding terminal.

[0009] Optionally, the second layer includes a horizontal portion and a vertical portion, the vertical portion is arranged at the edge of the horizontal portion, the horizontal portion covers the upper surface of the first layer, the vertical portion covers the side of the second layer to wrap the first layer, and the orthographic projection of the horizontal portion on the display panel covers the binding area.

[0010] Optionally, the virtual terminal includes a first peak and a second peak connected to each other, the second peak is arranged on a side of the first peak away from the binding terminal, and the cross-sections of the first peak and the second peak are in a triangular shape.

[0011] Optionally, the material of the first layer further includes a polymer compound, and the molecular chain length of the polymer compound is 5-10 μm.

[0012] Optionally, the material of the third layer includes water-absorbing material.

[0013] Optionally, in the photosensitive adhesive, the proportion of the acrylic is 30% to 50%, the proportion of the photoinitiator is 40% to 60%, the proportion of the auxiliary agent is 1% to 6%, and the proportion of the waterproof reinforcing material is 1% to 10%.

[0014] The present application also discloses a display device, which includes a backlight module and a display panel. The backlight module is arranged opposite to the display panel, and the backlight module provides backlight for the display panel.

[0015] Compared with the existing solution of coating photosensitive adhesive only on the binding area, the present application improves the waterproof performance of the photosensitive adhesive by adding phase change energy storage material into the photosensitive adhesive. When the display panel is in a high humidity environment, the external water vapor invades the interior of the photosensitive adhesive and evaporates quickly under the action of the phase change energy storage material, thereby preventing the external water vapor from reaching the binding terminal through the photosensitive adhesive. In addition, virtual terminals are arranged around the binding terminals to block the external water vapor entering the binding area from the connection between the photosensitive adhesive and the glass substrate, thereby preventing the water vapor from corroding the binding terminal in all directions and improving the waterproof performance of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The included drawings are used to provide a further understanding of the embodiments of the present application, which constitute a part of the specification, are used to illustrate the implementation methods of the present application, and together with the text description, explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0017] Figure 1 is a schematic diagram of a display device according to an embodiment of the present application;

[0018] Figure 2 is a schematic diagram of a display panel according to an embodiment of the present application;

[0019] Figure 3 is a schematic diagram of a binding area according to an embodiment of the present application;

[0020] Figure 4 is a schematic diagram of a photosensitive adhesive containing water vapor according to an embodiment of the present application;

[0021] Figure 5 is a schematic diagram of a first photosensitive adhesive according to an embodiment of the present application;

[0022] Figure 6 This is a schematic diagram of the waterproof ability of photosensitive adhesive with different proportions of phase change energy storage materials;

[0023] Figure 7 is a schematic diagram of a second photosensitive adhesive according to an embodiment of the present application;

[0024] Figure 8 It is a schematic diagram of a third photosensitive adhesive according to an embodiment of the present application.

[0025] Among them, 10, display device; 20, display panel; 30, backlight module; 100, binding area; 110, binding terminal; 120, virtual terminal; 121, first peak; 122, second peak; 123, sawtooth structure; 131, display area; 132, non-display area; 140, glass substrate; 200, photosensitive adhesive; 210, first layer; 220, second layer; 221, horizontal part; 222, vertical part; 230, third layer; 241, phase change energy storage material; 242, polymer compound; 243, water-absorbing material; 300, water vapor. DETAILED DESCRIPTION

[0026] It should be understood that the terms used herein, the specific structures and functional details disclosed are only for describing specific embodiments and are representative, but the present application can be implemented in many alternative forms and should not be construed as being limited to only the embodiments described herein.

[0027] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, unless otherwise specified, features defined as "first" and "second" may explicitly or implicitly include one or more of the features; "plurality" means two or more. The term "including" and any variation thereof means non-exclusive inclusion, and one or more other features, integers, steps, operations, units, components and / or combinations thereof may exist or be added.

[0028] In addition, terms indicating orientation or positional relationships, such as “center,” “lateral,” “up,” “down,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inside,” and “outside,” are described based on the orientation or relative positional relationships shown in the accompanying drawings and are merely simplified descriptions for the convenience of describing the present application. They do not indicate that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limitations on the present application.

[0029] In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internally connected between two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] The present application is described in detail below with reference to the accompanying drawings and optional embodiments.

[0031] Figure 1 is a schematic diagram of a display device according to an embodiment of the present application. Figure 1 As shown, the present application discloses a display device 10, the display device 10 includes a backlight module 30 and a display panel 20, the backlight module 30 is arranged opposite to the display panel 20, and the backlight module 30 provides backlight 30 for the display panel 20. The types of the backlight module 30 include a direct-type backlight module 30 and an edge-type backlight module 30, and the present application does not limit the type of the backlight module 30.

[0032] The display panel 20 includes, for example, a TN (Twisted Nematic) display panel 20, an IPS (In-Plane Switching) display panel 20, a VA (Vertical Alignment) display panel 20, an MVA (Multi-Domain Vertical Alignment) display panel 20. Of course, it may also be other types of display panels 20, such as an OLED (Organic Light-Emitting Diode) display panel 20.

[0033] The present application discloses a display panel 20, which can be used in the above-mentioned device 10. For the display panel 20 of the present application, the present application provides the following design:

[0034] Figure 2 is a schematic diagram of a display panel according to an embodiment of the present application, Figure 3 is a schematic diagram of a binding area of ​​an embodiment of the present application, combined with Figure 2-3 As shown, a display panel 20 is disclosed, the display panel 20 includes a display area 131 and a non-display area 132, the non-display area 132 is arranged around the display area 131, a binding area 100 is arranged on the non-display area 132, a plurality of binding terminals 110 are arranged in the binding area 100, and the plurality of binding terminals 110 are used for electrical connection with the outside world, specifically, they can be connected with the external circuit board through a flexible circuit board, the display panel 20 also includes a photosensitive adhesive 200, the material of the photosensitive adhesive 200 includes acrylic acid, a photoinitiator and an auxiliary agent, the photosensitive adhesive 200 covers the binding area 100, and a phase change energy storage material 241 is also added to the photosensitive adhesive 200; a plurality of virtual terminals 120 are also arranged in the binding area 100, and the virtual terminals 120 are arranged around the four sides of the binding terminals 110.

[0035] The photoinitiators include 1173, 184, 907 and benzophenone, etc. After receiving or absorbing external energy, the photoinitiators themselves undergo chemical changes and decompose into free radicals or cations, thereby initiating a polymerization reaction, which mainly plays a curing effect.

[0036] The phase change energy storage material 241 includes at least one of graphene, paraffin, cross-linked high-density polyethylene, polyols, inorganic salts, polyethylene glycol, polyvinyl alcohol, and polyurethane.

[0037] The display panel 20 includes an array substrate and an opposing substrate that are disposed opposite to each other. The binding area 100 is located on the array substrate. The array substrate includes a glass substrate 140 , and the binding terminals 110 are disposed on the glass substrate 140 .

[0038] By adding phase change energy storage material 241 to the photosensitive adhesive 200, since the photosensitive adhesive 200 is directly set on the binding terminal 110, when the display panel 20 is working, the binding terminal 110 for data transmission will continue to generate heat, and the phase change energy storage material 241 absorbs the heat emitted by the binding terminal 110 through phase change, thereby avoiding overheating of the connection area between the display panel 20 and the outside world, which may cause abnormal signal transmission. When the phase change energy storage material 241 absorbs heat and reaches the release threshold, it will start to release heat. During the heat release process, the heat directly acts on the water vapor 300 entering the photosensitive adhesive 200, thereby accelerating the evaporation of the water vapor 300 entering the photosensitive adhesive 200.

[0039] Furthermore, the glass substrate 140 and the binding terminal 110 are located below the photosensitive adhesive 200. The main component of the glass substrate 140 is silicon dioxide, and the density of silicon dioxide is 2.5 g / cm 3 The binding terminal 110 is made of metal such as aluminum, copper or metal alloy, and its density is at least greater than 2.0g / cm 3 , while the density of photosensitive adhesive 200 is 1.1g / cm 3 The side of the photosensitive adhesive 200 facing away from the glass substrate 140 is air, and the density of air is 1.29 g / cm 3 The density of air is much smaller than the density of the glass substrate 140 and the binding terminal. The water vapor 300 is more likely to volatilize to the medium with lower density when evaporating. Therefore, when the phase change energy storage material 241 releases energy, the water vapor 300 in the photosensitive adhesive 200 can be evaporated, and the heat released by the binding terminal 110 can be released to the outside through the evaporation of the water vapor 300, thereby extending the waterproof life of the photosensitive adhesive 200.

[0040] In addition to the path along the inside of the photosensitive adhesive 200 to reach the binding terminal 110, the external water vapor 300 may also enter the binding terminal 110 along the connection between the photosensitive adhesive 200 and the glass substrate 140, by setting virtual terminals 120 around the original binding terminals 110, the path for the external water vapor 300 to enter the binding area 100 can be extended, thereby improving the waterproof performance of the display panel 20.

[0041] Compared with the solution of coating the photosensitive adhesive 200 only on the binding area 100, the present application improves the waterproof performance of the photosensitive adhesive 200 by adding a phase change energy storage material 241 into the photosensitive adhesive 200. When the display panel 20 is in a high humidity environment, the external water vapor 300 invades the interior of the photosensitive adhesive 200 and evaporates quickly under the action of the phase change energy storage material 241, thereby preventing the external water vapor 300 from passing through the photosensitive adhesive 200 to reach the binding terminal 110. In addition, a virtual terminal 120 is arranged around the binding terminal 110 to block the external water vapor entering the binding area 100 from the connection between the photosensitive adhesive 200 and the glass substrate 140, thereby preventing the water vapor 300 from corroding the binding terminal 110 in all directions, thereby improving the waterproof performance of the display panel 20.

[0042] Furthermore, the virtual terminal 120 is composed of the phase change energy storage material 241. When the external water vapor 300 enters the binding terminal 110 along the connection between the photosensitive adhesive 200 and the glass substrate 140, it will pass through the surface of the virtual terminal 241 composed of the phase change energy storage material 241. At this time, when the phase change energy storage material 241 absorbs heat and reaches the release threshold, it will start to release heat. During the heat release process, the heat directly acts on the entering water vapor 300, which can accelerate the evaporation of the water vapor 300.

[0043] Furthermore, the path for the water vapor 300 to enter the binding area 100 can be extended by increasing the surface area of ​​the virtual terminal 120. Specifically, the virtual terminal 120 includes a first peak 121 and a second peak 122 connected to each other, and the cross section of the virtual terminal 120 is two connected triangles, which is equivalent to increasing the surface area of ​​the virtual terminal 120 on the side away from the glass substrate 140. The external water vapor 300 must pass through the surface of the first peak 121 and the second peak 122 on the side away from the glass substrate 140 to enter the binding terminal 110, and the height of the virtual terminal 120 is higher than the height of the binding terminal 110, which further extends the path for the external water vapor 300 to enter the binding area 100.

[0044] A serrated structure 123 may also be provided on the surface of the virtual terminal 120 on the side facing away from the glass substrate 140 to improve the connection stability between the photosensitive adhesive 200 and the virtual terminal 120 , and may further extend the path for external water vapor 300 to enter the binding area 100 , thereby reducing the possibility of external water vapor 300 entering the binding terminal 110 through the connection between the photosensitive adhesive 200 and the virtual terminal 120 .

[0045] The material of the photosensitive adhesive 200 includes acrylic acid resin, a photoinitiator and an auxiliary agent, and the phase change energy storage material 241 is also added into the photosensitive adhesive 200 .

[0046] The preparation method of the photosensitive adhesive 200:

[0047] First, the first mixing and stirring is performed: the acrylic resin and the additive are evenly mixed by a high-speed stirring device to obtain a mixture A;

[0048] Next, a second mixing and stirring is performed: the mixture A is mixed with the phase change energy storage material 241 to obtain a mixture B;

[0049] Finally, the third mixing and stirring is performed: the photoinitiator is added to the mixture B and mixed to finally obtain the photosensitive adhesive 200.

[0050] The mixing temperature of the high-speed stirring device is 20°C, the first mixing and stirring time is 15-20 minutes, and the second and third mixing and stirring time are 20-25 minutes, so that the phase change energy storage material 241 is evenly mixed with the mixture A and the photoinitiator, and the initial temperature of the phase change energy storage material 241 in the photosensitive adhesive 200 is increased.

[0051] Figure 4 Schematic diagram of a photosensitive adhesive containing water vapor in one embodiment of the present application, such as Figure 4 As shown in the figure, the direction indicated by the arrow is the evaporation direction of the water vapor 300. The virtual terminal 120 of the present application can also be set to be inclined outward, specifically: the angle between the first peak 121 and the second peak 122, the side close to the binding terminal 110 and the glass substrate 140 is an obtuse angle; the angle between the first peak 121 and the second peak 122, the side away from the binding terminal 110 and the glass substrate 140 is an acute angle. Thus, the water vapor 300 in the photosensitive adhesive 200 is guided to accumulate at the angle between the side of the first peak 121 and the second peak 122 away from the binding terminal 110 and the glass substrate 140; thereby further improving the waterproof effect of the display panel 20.

[0052] Figure 5 Schematic diagram of a first photosensitive adhesive according to an embodiment of the present application. Figure 5 As shown, the photosensitive adhesive 200 includes a first layer 210, a second layer 220 and a third layer 230 which are stacked, the first layer 210 is arranged on the side of the second layer 220 close to the binding terminal 110, and the third layer 230 is arranged on the side of the second layer 220 away from the binding terminal 110; the material of the first layer 210 includes acrylate, photoinitiator and auxiliary agent, the material of the second layer 220 is phase change energy storage material 241, the material of the third layer 230 includes acrylate, photoinitiator and auxiliary agent, and the height of the first layer 210 is greater than the height of the binding terminal 110. That is, it can be understood that the photosensitive adhesive 200 includes three layers, the first layer 210 and the second layer 220 are photosensitive adhesives 200 without adding phase change energy storage material 241, and the second layer 220 is pure phase change energy storage material 241.

[0053] Avoid the phase change energy storage material 241 from directly contacting the binding terminal 110 , and conduct the heat to the binding terminal 110 side when releasing heat. It can also avoid the phase change energy storage material 241 from conducting two adjacent binding terminals 110 , thereby ensuring the reliability of signal transmission of the display panel 20 .

[0054] Further, the second layer 220 includes a horizontal portion 221 and a vertical portion 222, the vertical portion 222 is arranged at the edge of the horizontal portion 221, the horizontal portion 221 covers the upper surface of the first layer 210, the vertical portion 222 covers the side of the second layer 220, and wraps the first layer 210, and the orthographic projection of the horizontal portion 221 on the display panel 20 covers the binding area 100. It can be understood that the first layer 210 completely covers the binding terminal 110, the second layer 220 completely covers the side and upper surface of the first layer 210, and the third layer 230 completely covers the upper surface and side of the second layer 220.

[0055] By completely covering the sides and the upper surface of the first layer 210 with the second layer 220, an all-round waterproof effect can be achieved, preventing water vapor 300 from entering from the sides of the first layer 210. The third layer 230 plays a protective and bonding role for the second layer 220, preventing external impurities from entering the second layer 220 and improving the connection stability of the second layer 220.

[0056] By setting a moisture tester between the photosensitive adhesive 200 and the glass substrate 140, the moisture content of the water vapor 300 invading the photosensitive adhesive 200 is simulated and detected. Figure 6 ,like Figure 6 As shown, the horizontal axis represents the test time, and the vertical axis represents the proportion of the phase change energy storage material. It can be seen that as time goes by, as the proportion of the phase change energy storage material 241 in the photosensitive adhesive 200 increases, within the same period of time, the content of water vapor 300 invading the photosensitive adhesive 200 continues to decrease, and the photosensitive adhesive 200 with the phase change energy storage material 241 accounting for 1%-10% has better waterproof ability; when the proportion of the phase change energy storage material 241 reaches more than 10%, it reaches a peak value, achieving a balance between the amount of external water vapor 300 entering the photosensitive adhesive 200 and the amount of water vapor 300 evaporated by the phase change energy storage material 241. Continuing to increase the proportion of the phase change energy storage material 241 will lose the original bonding performance of the photosensitive adhesive 200.

[0057] Therefore, in the photosensitive adhesive 200 of this embodiment, the proportion of the acrylic acid resin is 30% to 50%, the proportion of the photoinitiator is 40% to 60%, the proportion of the auxiliary agent is 1% to 6%, and the proportion of the waterproof reinforcing material phase change energy storage material is 1% to 10%. This can ensure that the photosensitive adhesive 200 has good waterproof performance and prevent the photosensitive adhesive 200 from losing its original adhesive performance.

[0058] Figure 7 Schematic diagram of a second photosensitive adhesive according to an embodiment of the present application. Figure 7 As shown, the material of the first layer 210 also includes a polymer compound 242, the molecular chain length of the polymer compound 242 is 5-10 μm, and the polymer compound 242 includes at least one of polyethylene, polyvinyl chloride, and polyimide. The first layer 210 is equivalent to a barrier layer to prevent the phase change energy storage material 241 in the second layer 220 from moving into the first layer 210.

[0059] When the molecular chain length of the polymer compound 242 is less than 5 μm, it will not be able to effectively block the phase change energy storage material 241 from entering the first layer 210, resulting in direct contact between the phase change energy storage material 241 and the binding terminal 100. When the molecular chain length of the polymer compound 242 is greater than 10 μm, when the photosensitive adhesive 200 of the first layer 210 is mixed, the polymer compound 242 cannot be fully mixed evenly, and the polymer compound 242 is distributed on the side of the photosensitive adhesive 200 of the first layer 210, or precipitated under the side of the photosensitive adhesive 200 of the first layer 210, so that the phase change energy storage material 241 can still easily enter from the middle of the photosensitive adhesive 200 of the first layer 210 and reach the side of the binding terminal 110, thereby causing the two adjacent binding terminals 110 to be turned on, resulting in the binding terminal 110 being unable to transmit data normally.

[0060] In the photosensitive adhesive 200 of the first layer 210, the proportion of the acrylic acid resin is 30% to 50%, the proportion of the photoinitiator is 40% to 60%, the proportion of the auxiliary agent is 1% to 6%, and the proportion of the polymer material is 1% to 10%. Thus, the barrier performance of the photosensitive adhesive 200 can be ensured, and other properties of the photosensitive adhesive 200 can be prevented from being affected.

[0061] Figure 8 Schematic diagram of a third photosensitive adhesive according to an embodiment of the present application. Figure 8 As shown, the material of the third layer includes a water-absorbent material, and the water-absorbent material 243 includes at least one of a highly water-absorbent resin, sodium polyacrylate, polymethacrylate hydrogen, and polyacrylamide.

[0062] By adding water-absorbing material 243 to the photosensitive adhesive 200 of the third layer 230, the water-absorbing material 243 in the photosensitive adhesive of the third layer 230 can actively absorb external water vapor 300. After reaching a saturated state, it will no longer absorb external water vapor 300, which is equivalent to acting as a waterproof layer. In addition, the hydrophilic groups in the photosensitive adhesive 200 of the third layer 230 adsorb water vapor 300, and will also prevent the water vapor 300 from moving to the second layer 220, thereby further improving the waterproof efficiency of the display panel 20.

[0063] If the proportion of the water-absorbing material 243 is too small, the waterproof performance of the photosensitive adhesive 200 will be reduced. If the proportion of the water-absorbing material 243 is too large, the viscosity of the photosensitive adhesive 200, the buffering performance of the binding terminal 110 covered by the photosensitive adhesive 200 and the insulation performance of isolating external energy will be reduced when external force acts on the photosensitive adhesive 200. Therefore, in the photosensitive adhesive 200 of the embodiment, the proportion of the acrylic acid is 30% to 50%, the proportion of the photoinitiator is 40% to 60%, the proportion of the auxiliary agent is 1% to 6%, and the proportion of the water-absorbing material 243 is 1% to 10%. In this way, the waterproof performance of the photosensitive adhesive 200 can be guaranteed, and the reduction of other properties of the photosensitive adhesive 200 can be avoided.

[0064] It should be noted that the inventive concept of the present application can form a large number of embodiments, but the length of the application document is limited and it is impossible to list them one by one. Therefore, under the premise of no conflict, the embodiments or technical features described above can be arbitrarily combined to form new embodiments. After the embodiments or technical features are combined, the original technical effects will be enhanced.

[0065] The above content is a further detailed description of the present application in combination with specific optional implementation methods, and it cannot be determined that the specific implementation of the present application is limited to these descriptions. For ordinary technicians in the technical field to which the present application belongs, several simple deductions or substitutions can be made without departing from the concept of the present application, which should be deemed to fall within the scope of protection of the present application.

Claims

1. A display panel, comprising a display area and a non-display area, wherein the non-display area is arranged around the display area, a binding area is arranged on the non-display area, a plurality of binding terminals are arranged in the binding area, and the plurality of binding terminals are used for electrical connection with the outside, characterized in that: The display panel further includes a photosensitive adhesive, the material of which includes acrylic acid resin, a photoinitiator and an auxiliary agent, the photosensitive adhesive covers the binding area, and a phase change energy storage material is also added into the photosensitive adhesive; A plurality of virtual terminals are also arranged in the binding area, and the virtual terminals are arranged around the binding terminals.

2. The display panel according to claim 1, characterized in that: The virtual terminal is made of phase change energy storage material.

3. The display panel according to claim 1, characterized in that: The phase change energy storage material includes at least one of graphene, paraffin, cross-linked high-density polyethylene, polyols, inorganic salts, polyethylene glycol, polyvinyl alcohol, and polyurethane.

4. The display panel according to claim 1, characterized in that: The photosensitive adhesive comprises a first layer, a second layer and a third layer which are stacked, wherein the first layer is arranged on a side of the second layer close to the binding terminal, and the third layer is arranged on a side of the second layer away from the binding terminal; The material of the first layer includes acrylate, photoinitiator and additives, the material of the second layer is phase change energy storage material, the material of the third layer includes acrylate, photoinitiator and additives, and the height of the first layer is greater than the height of the binding terminal.

5. The display panel according to claim 4, characterized in that: The second layer includes a horizontal portion and a vertical portion, the vertical portion is arranged at the edge of the horizontal portion, the horizontal portion covers the upper surface of the first layer, the vertical portion covers the side of the second layer to wrap the first layer, and the orthographic projection of the horizontal portion on the display panel covers the binding area.

6. The display panel according to claim 2, characterized in that: The virtual terminal includes a first peak and a second peak connected to each other, the second peak is arranged on a side of the first peak away from the binding terminal, and the cross-sections of the first peak and the second peak are in a triangular shape.

7. The display panel according to claim 4, characterized in that: The material of the first layer also includes a polymer compound, and the molecular chain length of the polymer compound is 5-10 μm.

8. The display panel according to claim 4, characterized in that: The material of the third layer includes water-absorbing material.

9. The display panel according to any one of claims 1 to 8, characterized in that: In the photosensitive adhesive, the proportion of the acrylic acid resin is 30% to 50%, the proportion of the photoinitiator is 40% to 60%, the proportion of the auxiliary agent is 1% to 6%, and the proportion of the phase change energy storage material is 1% to 10%.

10. A display device, characterized in that: The display device comprises a backlight module and the display panel according to any one of claims 1 to 9, wherein the backlight module is arranged opposite to the display panel and provides backlight for the display panel.

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