Display panel and display device

Abstract

The application provides a display panel and a display device. The display panel comprises a screen body, a metal layer and a polarizing layer which are sequentially arranged on the screen body, and a blocking layer arranged between the metal layer and the polarizing layer. The blocking layer has metal particles which are used to react with iodine ions overflowing from the polarizing layer. The application can reduce the amount of iodine ions diffusing to the metal layer, reduce the corrosion of the metal layer by the iodine ions, maximize the normal use of the metal layer, and improve the service life of the display panel.

Description

TECHNICAL FIELD

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

[0002] Organic Light-Emitting Diode (OLED) display technology has the advantages of low cost, wide viewing angle, low driving voltage, fast response speed, rich color of light emission, simple preparation process, and can realize large-area flexible display, etc., and is considered as one of the most promising display technologies.

[0003] The flexible OLED display panel includes a substrate, and a light-emitting layer, an encapsulation layer, a touch layer, a polarizer and a cover plate which are sequentially stacked on the substrate. The touch layer of the flexible OLED display panel generally includes a composite layer formed by titanium-aluminum-titanium, and the composite layer serves as a conductive layer of the touch layer. In a high-temperature and high-humidity environment, the polarizer is prone to swelling and shrinking, resulting in cracks in the polarizer, and causing iodine ions in the polarizer to overflow. The iodine ions corrode the conductive layer in the touch layer, causing the conductive layer to fail, thereby affecting the use function of the touch layer. SUMMARY

[0004] In view of the above problems, the embodiments of the present application provide a display panel and a display device, which can reduce the number of iodine ions diffusing to the metal layer, reduce the corrosion of the iodine ions to the metal layer, and maximize the normal use of the metal layer, thereby improving the service life of the display panel.

[0005] To achieve the above object, the embodiments of the present application provide the following technical solutions:

[0006] The first aspect of the embodiments of the present application provides a display panel, which includes a screen body, and a metal layer and a polarizing layer which are sequentially stacked on the screen body.

[0007] A barrier layer is arranged between the metal layer and the polarizing layer, and the barrier layer includes a base body and metal particles arranged in the base body.

[0008] The display panel provided by the embodiments of the present application sets the barrier layer between the metal layer and the polarizing layer, and sets the metal particles in the barrier layer. On the one hand, the barrier layer can block the diffusion of iodine ions in the polarizing layer to the metal layer. On the other hand, the metal particles can react with the iodine ions as a sacrificial medium to achieve the purpose of absorbing iodine ions. The above setting can reduce the number of iodine ions diffusing to the metal layer, reduce the corrosion of the iodine ions to the metal layer, and improve the service life of the display panel.

[0009] In a possible implementation manner, the metal particles are made of aluminum and / or copper, and the particle size of the metal particles is between 2-5 μm.

[0010] In this way, the metal particles can have a better absorption effect on iodine ions.

[0011] In a possible implementation, the barrier layer comprises a first film layer and a support layer arranged in a stack, the first film layer being located between the support layer and the polarizing layer; and the metal particles are distributed in the first film layer.

[0012] In a possible implementation, the base body further comprises a second film layer, the second film layer being located between the support layer and the metal layer; and the metal particles are distributed in the second film layer.

[0013] In this way, the barrier layer can be made into a single film layer structure, which enriches the preparation process of the barrier layer and reduces the preparation difficulty of the display panel.

[0014] In a possible implementation, the material of the base body comprises a high-molecular flexible polymer.

[0015] Specifically, the base body is made of at least one of silica gel, polyurethane and acrylic resin.

[0016] In this way, the barrier layer can have a better absorption effect on stress.

[0017] In a possible implementation, the thickness of the barrier layer is between 25 and 200 μm.

[0018] In this way, on the one hand, the barrier layer can have a better absorption effect on iodine ions, and on the other hand, the thickness of the display panel can be reduced as much as possible.

[0019] In a possible implementation, the display panel has a central region and an edge region surrounding the periphery of the central region, and the distribution density of the metal particles in the barrier layer located in the edge region is greater than the distribution density of the metal particles in the barrier layer located in the central region.

[0020] Specifically, the distribution density of the metal particles in the barrier layer located in the edge region is twice the distribution density of the metal particles in the barrier layer located in the central region.

[0021] Specifically, the spacing between adjacent metal particles in the barrier layer located in the central region is between 10 and 20 μm.

[0022] In this way, the distribution density of the metal particles in the area where the polarizing layer is prone to cracking is greater, and the absorption effect of the barrier layer on iodine ions is improved.

[0023] In a possible implementation, the display panel has an adjacent bending area and a planar area, and the distribution density of the metal particles in the barrier layer in the bending area is greater than the distribution density of the metal particles in the barrier layer in the planar area.

[0024] Specifically, the distribution density of the metal particles in the barrier layer in the bending area is 2 times the distribution density of the metal particles in the barrier layer in the planar area.

[0025] Specifically, the spacing between adjacent metal particles in the barrier layer in the planar area is 10-20 microns.

[0026] In this way, the distribution density of the metal particles in the area where the polarizing layer is prone to cracking is greater, and the absorption effect of the barrier layer on iodine ions is improved.

[0027] In a possible implementation, the screen body includes a substrate, a light-emitting layer, and an encapsulation layer arranged in sequence, and the metal layer is arranged on the surface of the encapsulation layer facing the polarizing layer. The side of the polarizing layer away from the metal layer is also provided with a cover plate.

[0028] In this way, the external force on the polarizing layer can be reduced, and the polarizing layer is prevented from cracking due to stress, thereby preventing the diffusion of iodine ions.

[0029] The second aspect of the embodiment of the present application provides a display device, which includes the display panel described above.

[0030] The display device provided by the embodiment of the present application sets a barrier layer between the metal layer and the polarizing layer of the display panel, and sets metal particles in the barrier layer. On the one hand, the barrier layer can block the diffusion of iodine ions in the polarizing layer to the metal layer. On the other hand, the metal particles can react with iodine ions as a sacrificial medium to achieve the purpose of absorbing iodine ions. The above setting can reduce the number of iodine ions diffusing to the metal layer, reduce the corrosion of iodine ions to the metal layer, and improve the service life of the display device.

[0031] The configuration of the present application and its other application purposes and beneficial effects will be more obvious and easy to understand through the description of the preferred embodiments in conjunction with the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0033] Figure 1 A structural schematic diagram of a display panel provided by an embodiment of the present application;

[0034] Figure 2A A structural schematic diagram of a barrier layer of a display panel provided by an embodiment of the present application;

[0035] Figure 2B A structural schematic diagram of another barrier layer of a display panel provided by an embodiment of the present application;

[0036] Figure 3 A top view of a display panel provided by an embodiment of the present application;

[0037] Figure 4 A top view of another display panel provided by an embodiment of the present application.

[0038] Explanation of reference signs:

[0039] 100 - display panel;

[0040] 101 - edge area;

[0041] 102 - center area;

[0042] 103 - bending area;

[0043] 104 - planar area;

[0044] 110 - screen body;

[0045] 111 - substrate;

[0046] 112 - light-emitting layer;

[0047] 113 - encapsulation layer;

[0048] 120 - metal layer;

[0049] 130 - barrier layer;

[0050] 131 - support layer;

[0051] 132 - first film layer;

[0052] 133 - second film layer;

[0053] 140 - polarizing layer;

[0054] 150 - adhesive layer;

[0055] 160 - cover plate. DETAILED DESCRIPTION

[0056] As described in the background, the touch layer of the flexible OLED display panel generally includes a composite layer formed by titanium-aluminum-titanium, which serves as a conductive layer of the touch layer. The conductive layer is located on the side of the polarizer close to the substrate, and the polarizer is generally stacked by multiple film layers. Since the polarizer has poor high-temperature and high-humidity resistance, it is prone to swelling and shrinking in a high-temperature and high-humidity environment, resulting in cracks in the polarizer or peeling between the film layers, so that iodine ions overflow and diffuse into the conductive layer. Under the catalysis of water, the iodine ions react with aluminum to form aluminum iodide, causing the conductive layer to be corroded. When the corrosion reaches a certain degree, the conductive layer fails, thereby affecting the use function of the touch layer.

[0057] To solve the above technical problems, the embodiments of the present application provide a display panel and a display device. A barrier layer is arranged between the metal layer and the polarizing layer of the display panel, and metal particles are arranged in the barrier layer. In this way, on the one hand, the barrier layer can block the diffusion of iodine ions in the polarizing layer to the metal layer. On the other hand, the metal particles can react with the iodine ions as a sacrificial medium to achieve the purpose of absorbing iodine ions. The above arrangement can reduce the number of iodine ions diffusing to the metal layer and reduce the corrosion of iodine ions to the metal layer. The above metal layer can be a touch layer, and the barrier layer can maximize the normal use of the touch layer and improve the service life of the display panel and the display device.

[0058] To make the objectives, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the preferred embodiments of the present application. In the drawings, the same or similar notations represent the same or similar parts or parts having the same or similar functions throughout. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application. The embodiments of the present application will be described in detail below with reference to the drawings.

[0059] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be understood in a broad sense, for example, it can be fixedly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0060] As Figure 1As shown, the display panel 100 includes a screen body 110, and a metal layer 120 and a polarizing layer 140 which are sequentially and layerwisely arranged on the screen body 110. A barrier layer 130 is arranged between the metal layer 120 and the polarizing layer 140, and the barrier layer 130 can include a base body having metal particles therein, the metal particles being used to react with iodine ions overflowing from the polarizing layer 140. The metal particles can be distributed at a certain distribution density in the barrier layer 130, and the distribution density of the metal particles is not limited in the embodiments of the present application.

[0061] In the embodiments of the present application, the metal layer 120 can form different touch electrodes as touch wires, and is used to realize touch recognition. The metal layer 120 can be grid-shaped.

[0062] It should be noted that the polarizing layer 140 can include a polyvinyl alcohol (PVA) film and tri-cellulose acetate (TAC) films arranged on both sides of the PVA film. The TAC film has high light transmittance, good water resistance and certain mechanical strength, and can protect the PVA film. The PVA film can be prepared by a dyeing process, and the PVA film contains a certain amount of iodine after dyeing. The iodine in the PVA film is easy to volatilize in a high-temperature environment. In addition, the polarizing layer 140 can further include pressure-sensitive adhesive and a release film, and the pressure-sensitive adhesive is located between the TAC film and the release film.

[0063] It should be noted that the barrier layer 130 is arranged between the metal layer 120 and the polarizing layer 140, and the metal particles are arranged in the base body of the barrier layer 130. On the one hand, the barrier layer 130 can block the diffusion of iodine ions in the polarizing layer 140 to the metal layer 120. On the other hand, the metal particles can react with the iodine ions as a sacrificial medium to achieve the purpose of absorbing iodine ions. In this way, the number of iodine ions diffusing to the metal layer 120 is reduced, the corrosion of the metal layer 120 by the iodine ions is alleviated, the normal use of the touch layer is maximized, and the service life of the display panel 100 is improved.

[0064] In a possible implementation, the base body of the barrier layer 130 can be a flexible member. In this way, the barrier layer 130 is relatively soft, and when the polarizing layer 140 is heated and swells or deformed under stress, the flexible barrier layer 130 can play a buffering role and deform to absorb the stress of the polarizing layer 140, so that the polarizing layer 140 achieves the purpose of releasing stress, thereby avoiding cracks or interlayer fractures of the polarizing layer 140 due to large stress, preventing iodine ions from overflowing and diffusing, and reducing the risk of corrosion of the metal layer 120 by iodine ions.

[0065] It should be noted that, as Figure 1As shown, the base of the barrier layer 130 can be a single film layer structure. During the preparation of the display panel 100, a mixture of metal particles and a flexible polymer can be coated on the metal layer 120 by a coating process to form the barrier layer 130. The base of the barrier layer 130 can also be a multi-film layer structure. In this case, the barrier layer 130 can be prepared as a finished product by a separate preparation process, and then attached to the side of the metal layer 120 away from the screen body 110. The embodiments of the present application do not limit the structure of the barrier layer 130, and the user can select according to the actual situation.

[0066] In a possible implementation, as shown in Figure 2A The base of the barrier layer 130 includes a support layer 131 and a first film layer 132 arranged in layers, the first film layer 132 is located between the support layer 131 and the polarizing layer 140, and the metal particles are distributed in the first film layer 132. The support layer 131 can be a transparent polyimide (CPI for short). The barrier layer 130 of this structure needs to be provided with an optical adhesive (OCA for short) between the barrier layer 130 and the metal layer 120 when the barrier layer 130 is attached to the metal layer 120, so as to facilitate the bonding of the barrier layer 130 and the metal layer 120.

[0067] In another possible implementation, as shown in Figure 2B The base of the barrier layer 130 can also include a second film layer 133, the second film layer 133 and the first film layer 132 are located on both sides of the support layer 131, and the metal particles are distributed in the first film layer 132 and the second film layer 133.

[0068] It should be noted that the material of the base of the barrier layer 130 includes a flexible polymer, specifically, the flexible polymer includes at least one of silicone, polyurethane and acrylic resin. The use of the above materials can not only make the barrier layer 130 better absorb stress, but also reduce the difficulty of preparing the barrier layer 130.

[0069] It can be understood that when the base is a single film layer structure, the base is made of a flexible polymer; when the base is a double film layer structure, the first film layer 132 is made of a flexible polymer; and when the base is a three-film layer structure, the first film layer 132 and the second film layer 133 are made of a flexible polymer.

[0070] It should be noted that the flexible polymer can have certain viscosity at room temperature, so the flexible polymer is arranged on both sides of the support layer 131, so that both sides of the barrier layer 130 have viscosity, which facilitates the bonding of the barrier layer 130 with the metal layer 120 and the polarizing layer 140.

[0071] In a possible implementation, as shown in FIG. 1, the display panel 100 has a center region 102, and an edge region 101 surrounding the periphery of the center region 102. The distribution density of the metal particles in the barrier layer 130 in the edge region 101 is greater than the distribution density of the metal particles in the barrier layer 130 in the center region 102. Figure 3

[0072] It can be understood that the multilayer film layer stack forms the polarizing layer 140, when the polarizing layer 140 generates cracks or breaks, the adjacent film layers are most likely to generate interlayer cracks or interlayer breaks at the side edges of the polarizing layer 140, and thus, the iodine ion concentration is the highest in the area close to the side edges of the polarizing layer 140 when the iodine ions diffuse. Since the edge region 101 corresponds to the area with a higher iodine ion concentration, the iodine ion concentration in the edge region 101 of the barrier layer 130 is the highest. By making the distribution density of the metal particles in the edge region 101 greater than the distribution density of the metal particles in the center region 102, the metal particles in the edge region 101 of the barrier layer 130 can react more fully with the iodine ions, and the absorption effect of the barrier layer 130 on the iodine ions is enhanced. Similarly, since the iodine ion concentration in the center region 102 of the barrier layer 130 is lower, the distribution density of the metal particles in the center region 102 is lower, which can reduce the number of metal particles in the barrier layer 130 to the greatest extent, and reduce the cost. On the other hand, the influence of the metal particles on the light transmission performance of the display panel 100 is reduced.

[0073] Specifically, the distribution density of the metal particles in the barrier layer 130 in the edge region 101 is twice the distribution density of the metal particles in the barrier layer 130 in the center region 102. For example, the distance between the adjacent metal particles in the barrier layer 130 in the center region 102 is between 10 μm and 20 μm, where the distance refers to the distance between the edges of the metal particles, and the distance can be 10 μm, 15 μm, or 20 μm. If the distance is less than 10 μm, the distribution of the metal particles is too dense, which can affect the light transmission performance of the display panel 100. If the distance is greater than 20 μm, the number of metal particles is small, and the absorption of the iodine ions is insufficient, which causes the remaining iodine ions to diffuse to the metal layer 120 and corrode the metal layer 120.

[0074] It can be understood that the distance between the adjacent metal particles in the barrier layer 130 in the edge region 101 is between 5 μm and 10 μm, where the distance can be 5 μm, 7 μm, or 10 μm. In this way, the distribution density of the metal particles in the area where the polarizing layer 140 is prone to cracks is greater, and the absorption effect of the barrier layer 130 on the iodine ions is improved.

[0075] In another possible implementation, as shown in FIG. 2, the display panel 100 has a center region 102, and an edge region 101 surrounding the periphery of the center region 102. The distribution density of the metal particles in the barrier layer 130 in the edge region 101 is greater than the distribution density of the metal particles in the barrier layer 130 in the center region 102. Figure 4 ​As shown, the display panel 100 has an adjacent bending area 103 and a flat area 104, wherein the bending area 103 can be located in the middle of the display panel 100, and both sides of the bending area 103 are the flat area 104. The distribution density of the metal particles in the barrier layer 130 located in the bending area 103 is greater than the distribution density of the metal particles in the barrier layer 130 located in the flat area 104.

[0076] It can be understood that in the bendable flexible display panel 100, after the display panel 100 in the bending area 103 is bent, a bending stress is generated, which is easy to cause the polarizing layer 140 in the bending area 103 to break, leading to the diffusion of iodine ions, and therefore the concentration of iodine ions in the bending area 103 is the highest. By making the distribution density of the metal particles in the bending area 103 greater than the distribution density of the metal particles in the flat area 104, the reaction of the metal particles and the iodine ions in the bending area 103 of the barrier layer 130 can be more sufficient, and the absorption effect of the barrier layer 130 on the iodine ions can be enhanced. Similarly, since the concentration of iodine ions in the flat area 104 of the barrier layer 130 is low, the distribution density of the metal particles in the flat area 104 is low, which can reduce the number of metal particles in the barrier layer 130 to the greatest extent and reduce the cost on the one hand. On the other hand, it can reduce the influence of the metal particles on the light transmission performance of the display panel 100.

[0077] Specifically, the distribution density of the metal particles in the barrier layer 130 located in the bending area 103 is twice the distribution density of the metal particles in the barrier layer 130 located in the flat area 104. The distance between adjacent metal particles in the barrier layer 130 located in the flat area 104 is between 10-20 μm, and the distance between adjacent metal particles in the barrier layer 130 located in the bending area 103 is between 5-10 μm. The distribution density in the bending area 103 and the above edge area 101 is the same, and the distribution density in the flat area 104 and the above center area 102 is the same, which will not be described here.

[0078] It can be understood that when the display panel 100 has the center area 102, the edge area 101, the bending area 103 and the flat area 104, the distribution density of the metal particles can be set according to the above manner. If the bending area 103 and the edge area 101 overlap, the distribution density of the metal particles in the overlapping area can be the same as the distribution density of the metal particles in the non-overlapping area of the bending area 103.

[0079] In one possible implementation, the metal particles can be aluminum particles, copper particles or a mixture of copper particles and aluminum particles. It can be understood that on the one hand, copper and aluminum have relatively stable performance and are relatively easy to prepare. On the other hand, both copper and aluminum can have stable chemical reactions with iodine ions to achieve the effect of absorbing iodine ions. In addition, the metal particles can also be other particle substances made of metals that can react with iodine ions.

[0080] Specifically, the particle size of the metal particles is between 2-5 μm, where the particle size can be 2 μm, 3 μm or 5 μm. The particle size of the metal particles is within the above range, on the one hand, facilitating the processing and manufacturing of the metal particles, and on the other hand, facilitating the chemical reaction of the metal particles and the iodine ions, so that the metal particles have a better absorption effect on the iodine ions.

[0081] Specifically, the thickness of the barrier layer 130 is between 25-200 μm, where the thickness can be 25 μm, 100 μm, 150 μm or 200 μm. If the thickness of the barrier layer 130 is less than 25 μm, the barrier layer 130 is too thin, not only the buffering effect is weak, but also the number of metal particles that can be arranged is less, reducing the absorption effect of the barrier layer 130 on the iodine ions. If the thickness of the barrier layer 130 is greater than 200 μm, the barrier layer 130 is too thick, which is not conducive to the thinning of the display panel 100.

[0082] In the embodiment of the present application, as shown in Figure 1 The screen body 110 includes a substrate 111, a light-emitting layer 112 and an encapsulation layer 113 which are sequentially stacked, and the encapsulation layer 113 is located on the side of the metal layer 120 away from the polarizing layer 140. The side of the polarizing layer 140 away from the metal layer 120 is sequentially stacked with an adhesive layer 150 and a cover plate 160, and the adhesive layer 150 can be optical glue. It can be understood that when the display panel 100 is impacted by external force, the cover plate 160 can buffer the impact of the external force on the polarizing layer 140, preventing the polarizing layer 140 from being impacted by a large external force, causing the polarizing layer 140 to be broken and the iodine ions to diffuse and overflow, thereby maximizing the prevention of the iodine ions from corroding the metal layer 120.

[0083] The second aspect of the embodiment of the present application provides a display device, which includes the display panel 100 described above.

[0084] The display device can be a mobile or fixed terminal having a display panel 100, such as a mobile phone, a television, a tablet computer, a notebook computer, an ultra-mobile personal computer (UMPC), a personal digital assistant (PDA), a virtual reality device, etc.

[0085] The display device provided by the embodiment of the present application sets the barrier layer 130 between the metal layer 120 and the polarizing layer 140 of the display panel 100, and sets the metal particles in the barrier layer 130. In this way, on the one hand, the barrier layer 130 can block the diffusion of iodine ions in the polarizing layer 140 to the metal layer 120. On the other hand, the metal particles can react with the iodine ions as a sacrificial medium to achieve the purpose of absorbing iodine ions. The above setting can reduce the number of iodine ions diffusing to the metal layer 120 and reduce the corrosion of the iodine ions to the metal layer 120. The metal layer 120 can be a touch layer, and the barrier layer 130 can maximize the normal use of the touch layer and improve the service life of the display device.

[0086] In the description of the embodiments of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0087] The terms "first", "second", "third", "fourth" and the like (if any) in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to the process, method, product or device.

[0088] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display panel, characterized in that, It includes a screen body, and a metal layer and a polarizing layer sequentially stacked on the screen body; A blocking layer is disposed between the metal layer and the polarizing layer, the blocking layer comprising a substrate and metal particles disposed within the substrate; When the display panel has a central area and an edge area surrounding the central area, the distribution density of the metal particles in the barrier layer located in the edge area is greater than the distribution density of the metal particles in the barrier layer located in the central area. When the display panel has adjacent bent areas and flat areas, the distribution density of the metal particles in the barrier layer located in the bent area is greater than the distribution density of the metal particles in the barrier layer located in the flat area. When the display panel has a central area, an edge area, a bent area, and a flat area, the distribution density of the metal particles in the barrier layer located in the edge area is greater than the distribution density of the metal particles in the barrier layer located in the central area; the distribution density of the metal particles in the barrier layer located in the bent area is greater than the distribution density of the metal particles in the barrier layer located in the flat area; if the bent area and the edge area overlap, the distribution density of the metal particles in the overlapping area is the same as the distribution density of the metal particles in the non-overlapping area of ​​the bent area.

2. The display panel according to claim 1, characterized in that, The metal particles are made of aluminum and / or copper, and the particle size of the metal particles is between 2-5 μm.

3. The display panel according to claim 1, characterized in that, The substrate includes a first film layer and a support layer stacked together, with the first film layer located between the support layer and the polarizing layer; the metal particles are distributed in the first film layer.

4. The display panel according to claim 3, characterized in that, The substrate further includes a second film layer located between the support layer and the metal layer; the metal particles are distributed in the second film layer.

5. The display panel according to any one of claims 1-4, characterized in that, The matrix is ​​made of a flexible polymer.

6. The display panel according to claim 5, characterized in that, The matrix is ​​made of at least one of silicone, polyurethane and acrylic resin.

7. The display panel according to any one of claims 1-4, characterized in that, The thickness of the barrier layer is between 25-200 μm.

8. The display panel according to any one of claims 1-4, characterized in that, The spacing between adjacent metal particles in the barrier layer located in the central region is between 10-20 μm.

9. The display panel according to any one of claims 1-4, characterized in that, The spacing between adjacent metal particles in the barrier layer located in the planar region is between 10-20 μm.

10. The display panel according to any one of claims 1-4, characterized in that, The screen includes a substrate, a light-emitting layer, and an encapsulation layer stacked in sequence. The metal layer is disposed on the surface of the encapsulation layer facing the polarizing layer. A cover plate is also disposed on the side of the polarizing layer away from the metal layer.

11. A display device, characterized in that, Includes the display panel as described in any one of claims 1-10.

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