Display panel and display device

Abstract

The invention provides a display panel and a display device. The display panel comprises a screen body layer, an elastic layer located on the light-emitting surface of the screen body layer and a damping layer arranged on the side, away from the screen body layer, of the elastic layer. According to the display panel, the damping layer and the elastic layer are additionally arranged on the light-emitting side of the display panel to slow down and rebound impact energy brought by external objects, and therefore the impact resistance of the display panel is improved.

Description

Technical Field

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

[0002] With the development of flexible display technology, OLED (Organic Light-Emitting Diode) has shown its great potential in flexible display. From fixed flexible display screens to foldable display screens, display screens have the characteristics of large size and portability. In order to make the display screen more convenient to store or carry when not in use, more and more people are paying attention to rollable flexible display screens.

[0003] Currently, curling terminals are mostly considered for use in laptops, tablets, car displays and other fields. In order to save space and facilitate carrying, the curling radius continues to decrease and the number of curling circles continues to increase, so the design requirements for the terminal mechanism are getting higher and higher, which is a huge challenge for the current display industry. Summary of the invention

[0004] An object of the present invention is to provide a display panel and a display device to solve the problem of poor performance of the curling terminal in the prior art.

[0005] To achieve the above object, the present invention provides a display panel, which includes a screen layer with a flexible and rollable structure, an elastic layer located on the light-emitting surface of the screen layer, and a damping layer arranged on a side of the elastic layer away from the screen layer.

[0006] Furthermore, the material of the damping layer includes thermoplastic polyurethane elastomer. Preferably, the thickness of the damping layer is 30-80 microns.

[0007] Furthermore, the Young's modulus of the elastic layer is greater than or equal to 6000 MPa. Preferably, the material of the elastic layer comprises transparent polyimide. Preferably, the thickness of the elastic layer is 25-80 microns.

[0008] Furthermore, the display panel further comprises a first adhesive layer and a second adhesive layer. The first adhesive layer is arranged on a side of the elastic layer facing the screen layer. The second adhesive layer is arranged on a side of the elastic layer facing the damping layer.

[0009] Further, the Young's modulus of the first adhesive layer and the second adhesive layer is 0.01-117 MPa. Preferably, the material of the first adhesive layer and the second adhesive layer comprises optical glue. Preferably, the thickness of the first adhesive layer and the second adhesive layer is 25-50 microns.

[0010] Furthermore, the display panel further comprises an impact-resistant layer and a protective layer. The impact-resistant layer is arranged on a side of the damping layer away from the elastic layer. The protective layer is arranged on a side of the impact-resistant layer away from the damping layer. Preferably, the material of the impact-resistant layer comprises thermoplastic polyester.

[0011] Furthermore, the display panel further comprises a substrate layer and a buffer layer. The substrate layer is arranged on a side of the screen layer away from the damping layer. The buffer layer is arranged on a side of the substrate layer away from the screen layer.

[0012] Further, the material of the substrate layer includes stainless steel, and the material of the buffer layer includes thermoplastic polyurethane elastomer. Preferably, the thickness of the buffer layer is 30-120 microns. Preferably, the substrate layer is connected to the screen body layer through a fourth adhesive layer.

[0013] Further, the screen body layer includes a support film array layer, a light-emitting layer, an encapsulation layer, a touch layer and a color film layer stacked in sequence. The support film is located on the side of the screen body layer away from the damping layer. The array layer is arranged on one side of the support film. The light-emitting layer is arranged on the side of the array layer away from the support film. The encapsulation layer is arranged on the side of the light-emitting layer away from the support film, and the encapsulation layer includes at least one layer of inorganic encapsulation material. The touch layer is arranged between the encapsulation layer and the damping layer. The color film layer is arranged between the touch layer and the damping layer. Preferably, the screen body layer also includes a third adhesive layer, and the third adhesive layer is arranged on the side of the support film close to the light-emitting layer, and the material of the third adhesive layer includes a pressure-sensitive adhesive.

[0014] The present invention further provides a display device, which includes the display panel as described above.

[0015] The advantages of the present invention are as follows: in a display panel and a display device of the present invention, a damping layer and an elastic layer are added on the light-emitting side to mitigate and rebound the impact energy brought by external objects, thereby improving the impact resistance of the display panel, preventing the internal components of the display panel from being damaged due to bumps, and thereby extending the service life of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 is a schematic diagram of the layered structure of the display panel in Example 1 of the present invention;

[0018] Figure 2 Schematic diagram of the damping of the damping layer to external impact in Example 1 and Example 2 of the present invention;

[0019] Figure 3 Schematic diagram of the rebound of the damping layer to external impact in Example 1 and Example 2 of the present invention;

[0020] Figure 4 It is a schematic diagram of the layered structure of the display panel in Example 2 of the present invention.

[0021] The components in the figure are shown as follows:

[0022] Display panel 100;

[0023] Screen layer 1; Support film 11;

[0024] Array layer 12; Light-emitting layer 13;

[0025] Encapsulation layer 14; Touch layer 15

[0026] Color filter layer 16; Third adhesive layer 17;

[0027] Damping layer 2; Elastic layer 3;

[0028] A first adhesive layer 4; A second adhesive layer 5;

[0029] Impact-resistant layer 6; Protective layer 7;

[0030] Substrate layer 8; Fourth adhesive layer 9;

[0031] The buffer layer 10 . DETAILED DESCRIPTION

[0032] The preferred embodiments of the present invention are described below with reference to the drawings in the specification to prove that the present invention can be implemented. The embodiments of the invention can fully introduce the present invention to those skilled in the art, making its technical content clearer and easier to understand. The present invention can be embodied through many different forms of embodiments of the invention, and the protection scope of the present invention is not limited to the embodiments mentioned in the text.

[0033] In the drawings, components with the same structure are indicated by the same numerical reference numerals, and components with similar structures or functions are indicated by similar numerical reference numerals. The size and thickness of each component shown in the drawings are arbitrarily shown, and the present invention does not limit the size and thickness of each component. In order to make the illustration clearer, the thickness of the components is appropriately exaggerated in some places in the drawings.

[0034] In addition, the following descriptions of the various embodiments of the invention are made with reference to the attached diagrams to illustrate specific embodiments of the invention that the present invention can be implemented with. The directional terms mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inner", "outer", "side", etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are for better and clearer description and understanding of the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0035] When some components are described as being "on" another component, the component may be directly placed on the other component; there may also be an intermediate component on which the component is placed, and the intermediate component is placed on the other component. When a component is described as being "mounted on" or "connected to" another component, the two may be understood to be directly "mounted on" or "connected", or one component may be indirectly "mounted on" or "connected to" another component via an intermediate component.

[0036] Example 1

[0037] A display device is also provided in an embodiment of the present invention, which may be an OLED display device, or any display device with a display function, such as a mobile phone, a laptop computer, a tablet computer, a car display, etc. The display device includes a display panel 100, which is used to provide a display image for the display device.

[0038] like Figure 1 As shown, the display panel 100 includes a screen layer 1, a damping layer 2, an elastic layer 6, an impact-resistant layer 6 and a protective layer 7. The screen layer 1 is used to provide visible light, and has a light-emitting surface, from which the visible light emitted by the screen layer 1 is emitted. The touch layer 15 and the color film layer 16 are sequentially stacked on the light-emitting surface of the screen layer 1, wherein the touch layer 15 is used to realize touch control, and the color film layer 16 is used to convert the visible light emitted by the screen layer 1 into color light to realize color display.

[0039] The screen layer 1 in the embodiment of the present invention can be an OLED screen layer, which can realize self-luminescence without backlight assistance. The screen layer 1 is a flexible and rollable structure, which includes a support film 11, an array layer 12, a light-emitting layer 13, an encapsulation layer 14, a touch layer 15 and a color filter layer 16 stacked in sequence.

[0040] The support film 11 is located on the side of the screen layer 1 away from the damping layer 2. The support film 11 is a BPF (Barrier Protect Film) film layer, which is a thin layer structure made of hard plastic or metal material. It is used to block water vapor and prevent water vapor from corroding the film layer in the display panel 100, thereby extending the service life of the display panel 100.

[0041] The array layer 12 is arranged on one side of the support film 11, and the light-emitting layer 13 is arranged on the side of the array layer 12 away from the support film 11. The array layer 12 includes a plurality of thin film transistors and a plurality of signal wirings, and the light-emitting layer 13 includes a plurality of light-emitting devices. The signal wirings are electrically connected to the corresponding thin film transistors to form a pixel circuit, and the light-emitting devices are electrically connected to the corresponding pixel circuits and light up under the drive of the pixel circuits, thereby realizing light-emitting display.

[0042] Furthermore, a third adhesive layer 17 is provided on a surface of the support film 11 close to the screen layer 1, and the support film 11 is attached to a surface of the array layer 12 away from the light-emitting layer 13 through the third adhesive layer 17. Optionally, the material of the third adhesive layer 17 includes a pressure sensitive adhesive (PSA).

[0043] The encapsulation layer 14 is arranged on the side of the light emitting layer 13 away from the support film 11, and is used to encapsulate and protect the screen layer 1 to prevent the screen layer 1 from being corroded by water and oxygen. The encapsulation layer 14 includes at least one layer of inorganic encapsulation material, which can be prepared by TFE (Thin Film Encapsulation) process.

[0044] The touch layer 15 is disposed between the encapsulation layer 14 and the damping layer 2, and the touch layer 15 can be prepared on a surface of the encapsulation layer 14 away from the support film 11 by a TOE (Touch-Panel On Encapsulation) process. The touch layer 15 includes touch electrodes, sensing electrodes, and touch signal lines, etc., which are used to sense the touch position and feed back the position information to the display device, thereby realizing touch control.

[0045] The color filter layer 16 is disposed between the touch layer 15 and the damping layer 2, and the color filter layer 16 can be prepared on a surface of the touch layer 15 away from the support film 11 by a COE (Color-Filter On Encapsulation) process. The color filter layer 16 includes color resists of various colors, which are used to filter the light emitted by the light-emitting layer 13 to the corresponding color, thereby realizing color display and improving the contrast of the display image.

[0046] The elastic layer 3 is located on the light-emitting side of the screen layer 1 (i.e., the side of the color filter layer 16 away from the support film 11), and is arranged on a surface of the color filter layer 16 away from the touch layer 15. The elastic layer 3 is made of a high modulus material, and its Young's modulus is greater than or equal to 6000 MPa. Optionally, the material used for the elastic layer 3 includes polyimide (Polyimide, PI). Furthermore, in order to prevent the elastic layer 3 from affecting the display effect of the display panel 100, the polyimide is preferably transparent polyimide (Colorless Polyimide, CPI).

[0047] The damping layer 2 is disposed on a surface of the elastic layer 3 away from the screen body layer 1, and is used to buffer the impact on the display panel 100. The material used for the damping layer 2 includes thermoplastic polyurethane elastomer (TPU).

[0048] The damping layer 2 extends from the light emitting surface of the screen layer 1 to the side of the screen layer 1, further protecting the light emitting surface and side of the screen layer 1. The elastic layer 3 is also located on the light emitting surface and side of the screen layer 1, covering the screen layer 1.

[0049] When an external object collides with the display panel 100, the damping layer 2 first absorbs external energy to reduce the energy brought by the external impact, and at the same time, the damping layer 2 can also reduce the remaining impact energy through its own damping performance, thereby absorbing and slowing down the damage caused by the external impact force to the display panel 100. Specifically, Figure 2 As shown in FIG. 1 , the impact of an external object pushes the damping layer 2 into a certain depth d (called the penetration depth). The thermoplastic polyurethane elastomer used in the damping layer 2 can increase the penetration depth d and prolong the residence time of the impact energy in the damping layer 2, thereby reducing the residual impact energy transmitted to the elastic layer 3. Figure 3 As shown, the elastic layer 3 is used to rebound the external impact, that is, to convert the impact energy into rebound kinetic energy, so that the impact on other film layers in the screen body is reduced. The display panel 100 absorbs and reduces the impact energy brought by external objects through the buffering performance of the damping layer 2 and the rebound performance of the elastic layer 3, thereby improving the impact resistance of the display panel 100, thereby preventing the internal components of the display panel 100 from being damaged due to bumps and collisions, thereby extending the service life of the display panel 100.

[0050] The thickness of the damping layer 2 may be 30-80 micrometers, and the thickness of the elastic layer 3 may be 25-80 micrometers. Preferably, the thickness of the damping layer 2 is 45 micrometers, and the thickness of the elastic layer 3 is 25 micrometers.

[0051] Furthermore, the display panel 100 further includes a first adhesive layer 4 and a second adhesive layer 5 respectively arranged on both sides of the elastic layer 3, wherein the first adhesive layer 4 is arranged on a surface of the elastic layer 3 facing the screen body layer 1, and the second adhesive layer 5 is arranged on a surface of the elastic layer 3 facing the damping layer 2. The first adhesive layer 4 and the second adhesive layer 5 are both used to closely adhere the elastic layer 3 to the film layers located on the upper and lower sides thereof, to prevent cracking between the elastic layer 3 and the other film layers, and to improve the structural stability of the display panel 100.

[0052] Specifically, the materials used in the first adhesive layer 4 and the second adhesive layer 5 include optical adhesive (OCA), which can be cured by irradiation with light of a specific wavelength (such as ultraviolet light). The Young's modulus of the first adhesive layer 4 and the second adhesive layer 5 is 0.01-117 MPa. Preferably, the Young's modulus of the first adhesive layer 4 and the second adhesive layer 5 is 4.7 MPa. At this time, the first adhesive layer 4 and the second adhesive layer 5 can maximize the reduction of their own impact resistance on the elastic layer 3 and the inorganic film layer in the encapsulation layer 14 while achieving the bonding function. The thickness of the first adhesive layer 4 and the second adhesive layer 5 can be 25-50 microns. Preferably, in order to reduce the thickness of the display panel 100 and achieve thinness, the thickness of the first adhesive layer 4 and the second adhesive layer 5 is 25 microns.

[0053] The impact-resistant layer 6 is disposed on a surface of the damping layer 2 away from the elastic layer 3, and is used to further improve the impact resistance of the display panel 100. Optionally, the material of the impact-resistant layer 6 includes thermoplastic polyester (PET). The thickness of the impact-resistant layer 6 can be 30-70 microns, and preferably, the thickness of the impact-resistant layer 6 is 50 microns.

[0054] The protective layer 7 is disposed on the side of the damping layer 2 away from the screen layer 1 and is prepared by HC (Hard Coating) process. The protective layer 7 is used to improve the scratch resistance of the display panel 100 and prevent the surface of the display panel 100 from being scratched.

[0055] In the display panel provided in the embodiment of the present invention, the impact resistance of the front of the display panel is improved by adding a damping layer and an elastic layer on its light-emitting side. Among them, the damping layer can absorb most of the energy brought by the external impact on the front of the display panel, and slow down the impact energy transmitted to the inside of the display panel by damping the force of the damping layer, thereby improving the buffering performance of the front of the display panel against the external impact force, protecting the internal components of the display panel, and reducing the impact on the internal components. At the same time, the high modulus elastic layer arranged below the damping layer can rebound the remaining impact energy that cannot be absorbed by the damping layer, change the transmission direction of the impact energy, and rebound the impact energy transmitted to the inside of the display panel back to the damping layer under the action of the elastic layer, so that the damping layer performs secondary buffering and absorption of the remaining impact energy, thereby blocking the transmission path of the impact energy and further protecting the internal components of the display panel.

[0056] Example 2

[0057] In an embodiment of the present invention, a display panel 100 is provided. Figure 4 As shown, the display panel 100 includes a screen layer 1, a damping layer 2, an elastic layer 3, an anti-impact layer 6 and a protective layer 7. The screen layer 1 is used to provide visible light, and has a light emitting surface, from which the visible light emitted by the screen layer 1 is emitted.

[0058] Optionally, the screen layer 1 in the embodiment of the present invention may be an OLED screen layer, which can realize self-luminescence without backlight assistance. The screen layer 1 is a flexible and rollable structure, which includes a support film 11, an array layer 12, a light-emitting layer 13, an encapsulation layer 14, a touch layer 15 and a color filter layer 16 stacked in sequence.

[0059] The support film 11 is located on the side of the screen layer 1 away from the damping layer 2. The support film 11 is a BPF (Barrier Protect Film) film layer, which is a thin layer structure made of hard plastic or metal material. It is used to block water vapor and prevent water vapor from corroding the film layer in the display panel 100, thereby extending the service life of the display panel 100.

[0060] The array layer 12 is arranged on one side of the support film 11, and the light-emitting layer 13 is arranged on the side of the array layer 12 away from the support film 11. The array layer 12 includes a plurality of thin film transistors and a plurality of signal wirings, and the light-emitting layer 13 includes a plurality of light-emitting devices. The signal wirings are electrically connected to the corresponding thin film transistors to form a pixel circuit, and the light-emitting devices are electrically connected to the corresponding pixel circuits and light up when driven by the corresponding pixel circuits, thereby realizing light-emitting display.

[0061] Furthermore, a third adhesive layer 17 is provided on a surface of the support film 11 close to the screen layer 1, and the support film 11 is attached to a surface of the array layer 12 away from the light-emitting layer 13 through the third adhesive layer 17. Optionally, the material of the third adhesive layer 17 includes a pressure sensitive adhesive (PSA).

[0062] The encapsulation layer 14 is arranged on the side of the light emitting layer 13 away from the support film 11, and is used to encapsulate and protect the screen layer 1 to prevent the screen layer 1 from being corroded by water and oxygen. The encapsulation layer 14 includes at least one layer of inorganic encapsulation material, which can be prepared by TFE (Thin Film Encapsulation) process.

[0063] The touch layer 15 is disposed between the encapsulation layer 14 and the damping layer 2, and the touch layer 15 can be prepared on a surface of the encapsulation layer 14 away from the support film 11 by a TOE (Touch-Panel On Encapsulation) process. The touch layer 15 includes touch electrodes, sensing electrodes, and touch signal lines, etc., which are used to sense the touch position and feed back the position information to the display device, thereby realizing touch control.

[0064] The color filter layer 16 is disposed between the touch layer 15 and the damping layer 2, and the color filter layer 16 can be prepared on a surface of the touch layer 15 away from the support film 11 by a COE (Color-Filter On Encapsulation) process. The color filter layer 16 includes color resists of various colors, which are used to filter the light emitted by the light-emitting layer 13 to the corresponding color, thereby realizing color display and improving the contrast of the display image.

[0065] The elastic layer 3 is located on the light-emitting side of the screen layer 1 (i.e., the side of the color filter layer 16 away from the support film 11), and is arranged on a surface of the color filter layer 16 away from the touch layer 15. The elastic layer 3 is made of a high modulus material, and its Young's modulus is greater than or equal to 6000 MPa. Optionally, the material used for the elastic layer 3 includes polyimide (Polyimide, PI). Furthermore, in order to prevent the elastic layer 3 from affecting the display effect of the display panel 100, the polyimide is preferably transparent polyimide (Colorless Polyimide, CPI).

[0066] The damping layer 2 is disposed on a surface of the elastic layer 3 away from the screen body layer 1, and is used to buffer the impact received by the display panel 100. The material used for the damping layer 2 includes thermoplastic polyurethane elastomer (TPU).

[0067] When an external object collides with the display panel 100, the damping layer 2 first reduces the energy brought by the external impact by absorbing the external energy, and at the same time, the damping layer 2 can also reduce the remaining impact energy through its own buffering performance, thereby absorbing and reducing the damage caused by the external impact force to the display panel 100. Specifically, Figure 2 As shown in FIG. 1 , the impact of an external object pushes the damping layer 2 into a certain depth d (called the penetration depth). The thermoplastic polyurethane elastomer used in the damping layer 2 can increase the penetration depth d and prolong the residence time of the impact energy in the damping layer 2, thereby reducing the residual impact energy transmitted to the elastic layer 3. Figure 3 As shown, the elastic layer 3 is used to rebound the external impact, that is, to convert the impact energy into rebound kinetic energy, so that the impact on the screen itself is reduced. The display panel 100 absorbs and reduces the impact energy brought by external objects through the buffering performance of the damping layer 2 and the rebound performance of the elastic layer 3, thereby improving the impact resistance of the display panel 100, thereby preventing the internal components of the display panel 100 from being damaged due to bumps and collisions, thereby extending the service life of the display panel 100.

[0068] The thickness of the damping layer 2 may be 30-80 micrometers, and the thickness of the elastic layer 3 may be 25-80 micrometers. Preferably, the thickness of the damping layer 2 is 45 micrometers, and the thickness of the elastic layer 3 is 25 micrometers.

[0069] Furthermore, the display panel 100 further includes a first adhesive layer 4 and a second adhesive layer 5 respectively arranged on both sides of the elastic layer 3, wherein the first adhesive layer 4 is arranged on a surface of the elastic layer 3 facing the screen body layer 1, and the second adhesive layer 5 is arranged on a surface of the elastic layer 3 facing the damping layer 2. The first adhesive layer 4 and the second adhesive layer 5 are both used to closely adhere the elastic layer 3 to the film layers located on the upper and lower sides thereof, to prevent cracking between the elastic layer 3 and the other film layers, and to improve the structural stability of the display panel 100.

[0070] Specifically, the Young's modulus of the first adhesive layer 4 and the second adhesive layer 5 is 0.01-117 MPa. Optionally, the material used in the first adhesive layer 4 and the second adhesive layer 5 includes an optical adhesive (OCA), which can be cured by irradiation with light of a specific wavelength (such as ultraviolet light). Preferably, the Young's modulus of the first adhesive layer 4 and the second adhesive layer 5 is 4.7 MPa. At this time, the first adhesive layer 4 and the second adhesive layer 5 can maximize the reduction of their own impact on the elastic layer 3 and the impact resistance of the inorganic film layer in the encapsulation layer 14 while achieving the bonding function. The thickness of the first adhesive layer 4 and the second adhesive layer 5 can be 25-50 microns. Preferably, in order to reduce the thickness of the display panel 100 and achieve thinness, the thickness of the first adhesive layer 4 and the second adhesive layer 5 is 25 microns.

[0071] The impact-resistant layer 6 is disposed on a surface of the damping layer 2 away from the elastic layer 3, and is used to further improve the impact resistance of the display panel 100. Optionally, the material of the impact-resistant layer 6 includes thermoplastic polyester (PET). The thickness of the impact-resistant layer 6 can be 30-70 microns, and preferably, the thickness of the impact-resistant layer 6 is 50 microns.

[0072] The protective layer 7 is disposed on the side of the damping layer 2 away from the screen body layer 1 and is prepared by the HC process. The protective layer 7 is used to improve the scratch resistance of the display panel 100 and prevent the surface of the display panel 100 from being scratched.

[0073] Furthermore, the display panel 100 further includes a substrate layer 8 and a buffer layer 10 .

[0074] The substrate layer 8 is located on the side of the screen layer 1 away from the damping layer 2. The substrate layer 8 is a rigid and rollable support plate, and its material includes a stainless steel (SUS) and a silicone composite material, which is used to provide rigid support for the display panel 100 and prevent the screen layer 1 from wrinkling.

[0075] The stainless steel and silicone composite materials are not limited to one layer. The stainless steel and silicone composite materials are attached to both sides of the stainless steel material. A single layer of silicone composite material and a single layer of stainless steel material can also be stacked. The thickness of the stainless steel does not exceed 20 microns. The substrate layer 8 can be attached to a surface of the support film 11 away from the screen layer 1 through the fourth adhesive layer 9. The fourth adhesive layer 9 includes optical adhesive (OCA).

[0076] The buffer layer 10 is arranged on a surface of the substrate layer 8 away from the screen layer 1, and its material also includes thermoplastic polyurethane elastomer (TPU). The buffer layer 10 is used to buffer and protect the back of the display panel 100. Similar to the damping layer 2, it absorbs and reduces the impact energy brought by the external impact to the back of the display panel 100, thereby reducing the risk of damage to the internal devices of the back of the display panel 100 after being hit, and further improving the impact resistance and service life of the display panel 100. In addition, the buffer layer 10 arranged on the back of the display panel 100 and having a softer material is more conducive to the absorption of impact energy than the rigid substrate layer 8. Optionally, the thickness of the buffer layer 10 is 30-120 microns. Preferably, the thickness of the buffer layer 10 can be 70 microns or 108 microns.

[0077] This embodiment is a preferred embodiment of the present application. This embodiment improves the impact resistance of the back of the display panel by adding a buffer layer made of the same material as the damping layer on the back of the display panel while achieving all the technical effects in Embodiment 1. The buffer layer provided on the back of the display panel can absorb and mitigate the impact on the back of the display panel, protect the back of the display panel, and provide all-round protection for the display panel together with the damping layer and the elastic layer.

[0078] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. It should therefore be understood that many modifications may be made to the exemplary embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the various dependent claims and features described herein may be combined in a manner different from that described in the original claims. It should also be understood that features described in conjunction with individual embodiments may be used in other described embodiments.

Claims

1. A display panel, characterized in that: include: A screen layer, wherein the screen layer is a flexible and rollable structure; An elastic layer, located on the light-emitting surface of the screen layer; The damping layer is arranged on a side of the elastic layer away from the screen layer.

2. The display panel according to claim 1, wherein: The material of the damping layer includes thermoplastic polyurethane elastomer; Preferably, the thickness of the damping layer is 30-80 microns.

3. The display panel according to claim 1, wherein: The Young's modulus of the elastic layer is greater than or equal to 6000 MPa; Preferably, the material of the elastic layer includes transparent polyimide; Preferably, the elastic layer has a thickness of 25-80 microns.

4. The display panel according to claim 1, wherein: Also includes: A first adhesive layer is provided on a side of the elastic layer facing the screen layer; The second adhesive layer is arranged on a side of the elastic layer facing the damping layer.

5. The display panel according to claim 4, wherein: The Young's modulus of the first adhesive layer and the second adhesive layer is 0.01-117 MPa; Preferably, the material of the first adhesive layer and the second adhesive layer includes optical glue; preferably, the thickness of the first adhesive layer and the second adhesive layer is 25-50 microns.

6. The display panel according to claim 1, wherein: Also includes: An anti-impact layer, arranged on a side of the damping layer away from the elastic layer; A protective layer, disposed on a side of the anti-impact layer away from the damping layer; Preferably, the material of the impact-resistant layer comprises thermoplastic polyester.

7. The display panel according to claim 1, wherein: Also includes: A substrate layer, arranged on a side of the screen layer away from the damping layer; The buffer layer is arranged on a side of the substrate layer away from the screen layer.

8. The display panel according to claim 7, wherein: The material of the substrate layer includes stainless steel; The material of the buffer layer includes thermoplastic polyurethane elastomer; Preferably, the thickness of the buffer layer is 30-120 microns; Preferably, the substrate layer is connected to the screen body layer via a fourth adhesive layer.

9. The display panel according to claim 1, wherein: The screen body layer comprises: a support film array layer, a light-emitting layer, a packaging layer, a touch layer and a color film layer stacked in sequence; A supporting film is located on a side of the screen layer away from the damping layer; An array layer is disposed on one side of the support film; A light-emitting layer is disposed on a side of the array layer away from the supporting film; An encapsulation layer, disposed on a side of the light-emitting layer away from the support film, the encapsulation layer comprising at least one layer of inorganic encapsulation material; A touch layer, disposed between the packaging layer and the damping layer; A color film layer, disposed between the touch layer and the damping layer; Preferably, the screen body layer further includes a third adhesive layer, the third adhesive layer is arranged on a side of the support film close to the light-emitting layer, and the material of the third adhesive layer includes a pressure-sensitive adhesive.

10. A display device, characterized in that: Comprising a display panel as described in any one of claims 1-9.

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