A display panel and display device

Abstract

This invention provides a display panel and a display device. The display panel includes a first optical refractive layer and a second optical refractive layer. The first optical refractive layer includes multiple openings, and the second optical refractive layer fills the multiple openings. The refractive index of the second optical refractive layer is greater than that of the first optical refractive layer. Nanoparticles are also disposed within the second optical refractive layer. When light passes through, the first and second optical refractive layers effectively increase the light transmittance. Simultaneously, the nanoparticles further act on the light, thereby effectively improving the light extraction rate of the display panel and enhancing its display effect.

Description

Technical Field

[0001] This invention relates to the field of display panel design and manufacturing technology, and more particularly to a display panel and display device. Background Technology

[0002] With the development of display technology, consumers have increasingly higher requirements for audio-visual products. For monitor manufacturers, producing high-resolution, high-quality monitors is the development direction. Organic light-emitting diodes (OLEDs) have been widely used in monitors due to their self-emissive, high-brightness, wide-viewing-angle, fast-response, and ability to manufacture RGB full-color components.

[0003] like Figure 1 As shown, Figure 1 This is a schematic diagram of the film layer structure of a display panel provided in the prior art. Specifically, the display panel includes an array substrate 101, an organic light-emitting layer 102, an encapsulation layer 103, a light enhancement layer 104, a polarizer 105, and a cover plate 106. In this display panel, after the organic light-emitting layer 102 emits light, the light passes through different film layers sequentially. As the light propagates through each film layer, a certain degree of loss occurs, and ultimately only about 20% of the light is emitted from the panel. To improve the light extraction efficiency of the device, a light enhancement layer 104 is usually provided to increase the light extraction efficiency. However, in the prior art, when the aforementioned light enhancement layer is provided, the enhancement effect is not ideal, and it cannot guarantee that the light extraction efficiency of the emitted light reaches its maximum, failing to meet the high-performance display requirements of the display panel and hindering further improvement of the display effect.

[0004] In summary, the display panels prepared in the prior art do not exhibit a significant effect from the light enhancement layer during display, resulting in a low light extraction rate. This fails to meet the high-performance display requirements of the display panels and hinders further improvements in their display performance. Summary of the Invention

[0005] This invention provides a display panel and a display device. It effectively improves upon the problem that the light enhancement layer inside existing display panels has poor performance, resulting in low light extraction efficiency and unsatisfactory display effects.

[0006] To solve the above-mentioned technical problems, the present invention provides a display panel, comprising:

[0007] substrate;

[0008] A light-emitting layer is disposed on the substrate;

[0009] An encapsulation layer is disposed on the light-emitting layer;

[0010] A first optical refractive layer is disposed on the light-emitting side of the encapsulation layer, and the first optical refractive layer includes a plurality of openings;

[0011] A second optical refractive layer is disposed on the side of the first optical refractive layer away from the light-emitting layer, and the second optical refractive layer fills the opening; and,

[0012] Nanoparticles;

[0013] The nanoparticles are at least disposed within the second optical refractive layer, and the refractive index of the light corresponding to the first optical refractive layer is less than the refractive index of the light corresponding to the second optical refractive layer.

[0014] According to one embodiment of the present invention, the nanoparticles are metal nanoparticles, and the metal nanoparticles include any one of gold and silver.

[0015] According to one embodiment of the present invention, the second optical refractive layer includes a filling portion and a covering portion connected to the filling portion;

[0016] The filling portion fills the opening, and the covering portion is disposed on the first optical refractive layer.

[0017] According to one embodiment of the present invention, the nanoparticles are disposed within the filling portion and the covering portion;

[0018] The density of the nanoparticles disposed in the filling portion is greater than the density of the nanoparticles disposed in the covering portion.

[0019] According to one embodiment of the present invention, the particle size of the nanoparticles in the filling portion is smaller than the particle size of the nanoparticles in the covering portion.

[0020] According to one embodiment of the present invention, the nanoparticles are disposed in the region corresponding to the opening of the covering portion;

[0021] Wherein, the area of ​​the distribution region corresponding to the nanoparticles is larger than the opening area of ​​the opening.

[0022] According to one embodiment of the present invention, the nanoparticles are arranged in layers in the thickness direction of the covering portion;

[0023] The distribution density of the nanoparticles on the side closer to the first optical refractive layer is greater than that on the side farther away from the first optical refractive layer.

[0024] According to one embodiment of the present invention, the light refractive index of the first optical refractive layer is set to 1.5-1.6, and the light refractive index of the second optical refractive layer is set to 1.6-2.

[0025] According to one embodiment of the present invention, at the opening region, the cross-section of the second optical refractive layer is configured as any one of trapezoidal, arc-shaped, and triangular.

[0026] According to a second aspect of the present invention, a display device is also provided, the display device including the display panel provided in the embodiments of the present invention.

[0027] The beneficial effects of this invention are as follows: Compared with the prior art, this invention provides a display panel and a display device. The display panel includes a first optical refractive layer and a second optical refractive layer. The second optical refractive layer is disposed on the first optical refractive layer, and the first optical refractive layer has an opening. The refractive index of the second optical refractive layer is greater than that of the first optical refractive layer. Simultaneously, nanoparticles are disposed within the second optical refractive layer. When light passes through the aforementioned layers, the first and second optical refractive layers interact with the light. Simultaneously, the nanoparticles can generate a plasmon effect, thereby further enhancing the light transmission within the layers. In this embodiment, the use of two optical refractive layers with different refractive indices and nanoparticles effectively improves the light extraction rate of the display panel and the display device, and enhances the display effect. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments or prior art, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the film layer structure of a display panel provided in the prior art;

[0030] Figure 2 This is a schematic diagram of the film layer structure of a display panel provided in an embodiment of this application;

[0031] Figure 3 This is a schematic diagram of a portion of the film layer of the display panel provided in an embodiment of this application;

[0032] Figure 4 This is another structural schematic diagram of the optical refractive layer provided in the embodiments of this application;

[0033] Figure 5A schematic diagram of the film structure corresponding to another optical refractive layer provided in an embodiment of this application;

[0034] Figure 6 This is a schematic diagram of the film layer structure of another display panel provided in an embodiment of this application. Detailed Implementation

[0035] The following description, in conjunction with the accompanying drawings of the embodiments of the present invention, provides different implementation methods or examples to realize different structures of the present invention. To simplify the present invention, the components and arrangements of specific examples are described below. Furthermore, the various specific processes and materials provided in the present invention are examples that those skilled in the art will recognize for the application of other processes. All other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present invention.

[0036] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0037] In the existing technology, light is lost to varying degrees when passing through the above-mentioned film layers. The light extraction rate of light that finally reaches the outside world through each film layer is only about 20%. Moreover, the light enhancement layer does not enhance the light effectively and cannot maximize the light extraction rate of the emitted light, thus failing to further improve the display effect of the display panel.

[0038] This application provides a display panel and a display device. By improving the film layer structure within the display panel, the light extraction rate is effectively increased, thereby improving the display effect.

[0039] like Figure 2 As shown, Figure 2 This is a schematic diagram of the film layer structure of a display panel provided in an embodiment of this application. Specifically, the display panel includes: an array substrate 200, an anode 416, a light-emitting layer 201, a pixel definition layer 202, a cathode 417, an encapsulation layer 103, an optical refractive layer 203, a passivation layer 204, and a protective layer 206.

[0040] Specifically, the array substrate 200 includes a substrate, which can be a flexible substrate, such as a flexible polyimide substrate. The anode 416 is disposed on the array substrate 200, the light-emitting layer 201 is disposed at a position corresponding to the anode 416, the pixel definition layer 202 is disposed on the array substrate 200, and the cathode 417 is disposed on and covers the pixel definition layer 202. Simultaneously, the encapsulation layer 103 is disposed on the cathode 417, the optical refractive layer 203 is disposed on the encapsulation layer 103, the passivation layer 204 is disposed on the optical refractive layer 203, and the protective layer 206 is disposed on the passivation layer 204, thereby protecting the display panel through the protective layer 206. In this embodiment, when setting the above-mentioned film layers, a polarizer can also be disposed between the passivation layer 204 and the protective layer 206 to achieve different display requirements.

[0041] In this embodiment of the application, when setting the above-mentioned film layer structures, the array substrate 200 can be a thin film transistor array substrate, and the light-emitting layer 201 is electrically connected to the thin film transistor array substrate through the anode 416, thereby providing a control signal for the light-emitting layer 201 and ensuring that the light-emitting layer 201 emits light normally.

[0042] In this embodiment, the light extraction efficiency is effectively improved by providing the optical refractive layer 203 within the display panel. Specifically, the optical refractive layer 203 comprises two optical refractive layers with different refractive indices and structures, and nanoparticles are disposed within the optical refractive layers. When light passes through the optical refractive layer 203, the different optical refractive layers can work together to act on the light, while the nanoparticles can further enhance the light within the film layer, thereby effectively improving the light extraction efficiency.

[0043] Specifically, such as Figure 3 As shown, Figure 3 This is a schematic diagram of a portion of the film layers of the display panel provided in an embodiment of this application. Specifically, in this embodiment, the optical refractive layer 203 includes a first optical refractive layer 2031 and a second optical refractive layer 2032.

[0044] Specifically, the first optical refractive layer 2031 is disposed on the encapsulation layer 103, the second optical refractive layer 2032 is disposed on the first optical refractive layer 2031 and completely covers the first optical refractive layer 2031, and the passivation layer 204 is disposed on the second optical refractive layer 2032. In this embodiment, the encapsulation layer 103 can also be replaced with other film layers, such as a planarization layer or other passivation layer structure. The encapsulation layer 103 supports the optical refractive layer and enhances light through the optical refractive layer.

[0045] Specifically, when setting the first optical refractive layer, the first optical refractive layer 2031 also includes a plurality of openings 334. The plurality of openings 334 are patterned on the first optical refractive layer 2031. Specifically, during the setting, each opening 334 can be set corresponding to each pixel unit of the display panel, so that the light emitted by the light-emitting pixels in the pixel unit can pass through the opening 334 and pass through to the outside of the display panel.

[0046] In this embodiment, when setting the patterned opening 334, the opening 334 can be configured according to the product requirements. Specifically, the opening 334 can be set to different depths. For example, the opening depth of each opening 334 can be the same as the thickness of the first optical refractive layer 2031, or the depth of the opening 334 can be half the thickness of the first optical refractive layer when setting the opening 334, in order to meet different usage requirements of the display panel.

[0047] Specifically, when setting the opening 334 in the first optical refractive layer 2031, the shape of the opening 334 can be set to various shapes. Preferably, the shape of the cross-section corresponding to the opening 334 can be set to a trapezoidal, arc-shaped, triangular, or other shaped structure, which will not be elaborated here. In the following embodiments, the cross-sectional shape of the opening 334 is illustrated by taking a trapezoidal structure as an example.

[0048] Preferably, the opening 334 has a trapezoidal cross-sectional shape, and the bottom of the opening 334 forms an angle β with the surface of the substrate 301. This angle β is the tilt angle of the sidewall of the first optical refractive layer 2031 in the area corresponding to the opening 334. In this embodiment, to ensure that the sidewall has a good light-reflecting effect, the tilt angle is set to 20°-80°. Preferably, in this embodiment, the tilt angle can be set to 80°, or as needed, to 60°, 50°, 40°, or 30°, thereby meeting different usage requirements of the display panel. Simultaneously, a second optical refractive layer 2032 is filled at each opening 334. Thus, at each position corresponding to the opening 334, the cross-sectional shape of the second optical refractive layer 2032 is a trapezoidal structure 337. This trapezoidal structure 337 is similar to a microlens structure. When light passes through this microlens structure, the light can be amplified by the microlens structure, thereby improving the light emission effect of the display panel.

[0049] In this embodiment, one side of the opening 334 corresponds to a non-opening region 335, and the cross-sectional shape of the first optical refractive layer 2031 corresponding to the multiple non-opening regions 335 is also trapezoidal, and the sidewall of the first optical refractive layer 2031 corresponding to the non-opening region 335 forms the four sidewalls of each opening 334.

[0050] Furthermore, such as Figure 4 As shown, Figure 4This is another structural schematic diagram of the optical refractive layer provided in this embodiment. In this embodiment, when the first optical refractive layer 2031 is provided, the cross-sectional shape of the patterned openings on the first optical refractive layer 2031 is an arc-shaped cross-section, as detailed below. Figure 4 In this structure, the first optical refractive layer 2031 corresponding to the arc-shaped cross-section is a convex mirror structure 338. This convex mirror structure 338 enhances light intensity. Alternatively, the arc-shaped opening can be configured as a hemispherical structure as needed. When light passes through the film layer within the area corresponding to this opening, the opening can further act on the light and effectively improve the light extraction rate.

[0051] For further details, please see Figure 3 As shown, the second optical refractive layer 2032 fills the opening 334 and completely covers the first optical refractive layer 2031.

[0052] Meanwhile, the display panel in this embodiment also includes nanoparticles 333. The nanoparticles 333 are disposed within the second optical refractive layer 2032.

[0053] In this embodiment, the nanoparticle 333 is a metal nanoparticle. Preferably, the metal nanoparticle can be gold nanoparticles, silver nanoparticles, or other metal nanoparticles, or other materials that can form a plasmon effect on the surface. The metal nanoparticle has a good surface-localized plasmon effect. When light shines on the metal nanoparticle, the plasmon effect can cause the light to resonate within a local region of the nanoparticle, thereby enhancing the propagation effect of the light within the film layer. Furthermore, the nanoparticle 333 can be configured according to the actual product requirements during preparation, which will not be elaborated here.

[0054] In this embodiment of the application, when nanoparticles 333 are provided in the second optical refractive layer 2032, the nanoparticles 333 can be uniformly distributed in the second optical refractive layer 2032, or set with different distribution densities in different areas according to the needs of the product, and the corresponding distribution densities are the same in the same area.

[0055] like Figure 5 As shown, Figure 5 This is a schematic diagram of the film structure corresponding to another optical refractive layer provided in an embodiment of this application. When setting the above-mentioned optical refractive layer and nanoparticles, the particle size of the nanoparticles is set to 25nm-125nm. Preferably, the particle size of the nanoparticles is set between 20nm-80nm, such as 70nm, 50nm, or 60nm. This adapts to different display panels and ensures a good light-reflecting effect.

[0056] For further details, please see Figure 5When the second optical refractive layer 2032 is provided, the second optical refractive layer 2032 also includes a filling portion 2062 and a covering portion 2061. The filling portion 2062 is disposed below and connected to the covering portion 2061, forming the entire second optical refractive layer 2032.

[0057] The filling part 2062 is disposed within the opening 334 and completely fills the opening 334.

[0058] When the nanoparticles 333 are disposed within the second optical refractive layer 2032, they can be disposed within the filling portion 2062 and the covering portion 2061. Furthermore, when the nanoparticles 333 are disposed within the filling portion 2062, they can be disposed within the sidewall region corresponding to the opening 334. When light enters the second optical refractive layer 2032 from the bottom, it first acts on the sidewall of the opening 334, thereby effectively enhancing the effect of the nanoparticles 333 on light.

[0059] See details Figure 3 In this embodiment of the application, when setting the nanoparticles 333, the nanoparticles 333 may be set only within the covering portion 2061 of the second optical refractive layer 2032. Preferably, the nanoparticles 333 are evenly spaced within the covering portion 2061. Furthermore, when setting the nanoparticles 333, the distance between two adjacent nanoparticles can be adjusted according to the light emission effect of the actual product. For example, changing the spacing value between two adjacent nanoparticles can make the formed display panel meet the requirements and ensure the display effect of the display panel.

[0060] Preferably, the distance between two adjacent nanoparticles 333 is set to 50nm-100nm. Specifically, the distance between two adjacent nanoparticles 333 is set to 60nm. This ensures the arrangement density of the nanoparticles 333 within the second optical refractive layer 2032 and enables them to have the best effect on light.

[0061] Preferably, the nanoparticles 333 can be disposed in the central region of the cover portion 2061 of the second optical refractive layer 2032, such as at a position where the thickness of the cover portion 2061 is halfway down. When light acts within the opening 334 and enters the second optical refractive layer 2032, it is acted upon by the nanoparticles 333 in the central region, generating a plasmon effect on the surface of the nanoparticles 333, thereby improving the propagation effect of the light within the refractive layer and thus increasing the light extraction efficiency.

[0062] In this embodiment, the nanoparticles 333 can also be disposed simultaneously in different regions. See details. Figure 5In this embodiment, the nanoparticles 333 are disposed within the covering portion 2061 and the filling portion 2062 of the second optical refractive layer 2032. This allows light propagating from the opening 334 to be acted upon multiple times by the nanoparticles 333, thereby effectively enhancing their effect on light.

[0063] Furthermore, during the setup, the orthographic projection area formed by the distribution region of the nanoparticles 333 in the first optical refractive layer 2031 is larger than the orthographic projection area formed by the opening 334 in the first optical refractive layer 2031. This allows the light within the opening 334 area to be absorbed by the nanoparticles 333 as much as possible, thereby improving the light propagation effect.

[0064] In this embodiment, to ensure the effectiveness of the second optical refractive layer 2032 in facilitating light transmission, the nanoparticles 333 in different regions can be configured to have different effects on light, thereby maximizing light enhancement. Specifically, the particle size of the nanoparticles 333 in the filling portion 2062 can be larger than that in the covering portion 2061. When light propagates to the outside of the refractive layer, it first passes through the opening 334. Therefore, the light is initially affected by the nanoparticles 333 in the filling portion 2062 at the opening 334 region. When the nanoparticles 333 in the opening 334 region are larger than this larger size, the larger metal nanoparticles 333 will have a greater effect on the light, thereby enhancing the plasmon resonance effect of the light on the nanoparticle surface.

[0065] Furthermore, when setting the nanoparticles 333 within the filling portion 2062, the nanoparticles 333 can be positioned near the sidewall of the opening 334. Specifically, the nanoparticles 333 can be positioned near the interface between the first optical refractive layer 2031 and the second optical refractive layer 2032. Moreover, the distribution density of the nanoparticles within the filling portion 2062 is greater than the distribution density of the nanoparticles 333 within the covering portion 2061.

[0066] Meanwhile, since the light is first acted upon by the filling portion 2062, the particle size of the nanoparticles in the filling portion 2062 can be larger than the particle size of the nanoparticles 333 in the covering portion 2061. When the light enters the second optical refractive layer 2032 from the filling portion 2062, the nanoparticles 333 can effectively act on the light, thereby improving the light extraction efficiency.

[0067] See details Figure 5In this embodiment of the application, when the nanoparticles 333 are disposed within the second optical refractive layer 2032, the nanoparticles 333 may also be disposed in layers within the covering portion 2061, such as a first layer A and a second layer B. The first layer A is located away from the light-emitting side, such as the side of the first layer A away from the opening 334. At the same time, the second layer B is located close to the light-emitting side, such as the position of the second layer B close to the opening 334.

[0068] Specifically, the distribution density of the nanoparticles 333 at the first layer A can be the same as the distribution density of the nanoparticles 333 at the second layer B. Alternatively, depending on the product requirements, the distribution density of the nanoparticles 333 in the first layer A can be different from that in the second layer B. Preferably, the distance between two adjacent nanoparticles is set to 50nm-100nm.

[0069] Preferably, the distribution density of nanoparticles 333 in the second layer B is greater than that in the first layer A. Thus, when light propagates within the second optical refractive layer 2032, it is first acted upon by the nanoparticles 333 in the second layer B, thereby increasing the light extraction rate within the second optical refractive layer 2032. This improves the display effect of the display panel.

[0070] Simultaneously, when setting the corresponding nanoparticles 333 in the first layer A and the second layer B, the orthographic projection of the nanoparticles 333 in the first layer A and the second layer B at least partially overlaps with the opening 334 region. This ensures that the nanoparticles in different regions can all act on the light within the opening 334 region, thereby improving the light's effect.

[0071] In this embodiment, the nanoparticles 333 in the covering portion 2061 can also be set to other layers according to the actual product requirements. By setting different nanoparticles in different areas of the covering portion 2061, the effect of light on light can be maximized.

[0072] Specifically, in this embodiment, when the first optical refractive layer 2031 is provided, its thickness is set to 3µm-5µm, which is the same as the thickness of the filling portion 2062. This ensures that the first optical refractive layer 2031 has a relatively thin film thickness, while ensuring the effectiveness of the filling portion 2062. Preferably, the thickness of the first optical refractive layer 2031 is set to 4µm.

[0073] Furthermore, the total thickness of the second optical refractive layer 2032 is set to 5µm-15µm. Preferably, the thickness of the cover portion 2061 corresponding to the second optical refractive layer 2032 can be set to 2µm-10µm, thereby ensuring that the cover portion 2061 has a good thickness while ensuring its light-reflecting effect. This effectively improves the light-reflecting effect of the two refractive layers.

[0074] Furthermore, the material of the second optical refractive layer 2032 can be selected as an ink layer. During preparation, an ink layer is inkjet printed on the first optical refractive layer 2031. After the transparent ink dries, the second optical refractive layer 2032 with the required structure is formed.

[0075] In this embodiment, the first optical refractive layer 2031 may be a photoresist material layer. The photoresist material layer is etched to finally form the patterned structure of the first optical refractive layer 2031 provided in this embodiment.

[0076] Preferably, the transmittance of the first optical refractive layer 2031 and the second optical refractive layer 2032 is greater than 90%, thereby effectively reducing the optical loss of light in the first optical refractive layer 2031 and the second optical refractive layer 2032 and improving the light extraction rate.

[0077] In this embodiment of the application, when the first optical refractive layer 2031 and the second optical refractive layer 2032 are provided, the optical refractive index corresponding to the first optical refractive layer 2031 is less than the optical refractive index corresponding to the second optical refractive layer 2032. That is, the refractive index corresponding to the first optical refractive layer 2031 is n1, and the optical refractive index corresponding to the second optical refractive layer 2032 is n2. Wherein, n1 < n2.

[0078] In this embodiment, the first optical refractive layer 2031 is a low-refractive-index layer, and the second optical refractive layer 2032 is a high-refractive-index layer. Preferably, n1 of the first optical refractive layer 2031 is set to 1.5-1.6, more preferably, n1 is set to 1.55. Simultaneously, n2 of the second optical refractive layer 2032 is set to 1.6-2.0, more preferably, n2 is set to 1.75. In this embodiment, the difference between n2 and n1 can be greater than or equal to 0.2, in which case n1 = 1.55 and n2 = 1.75. This ensures that when the two refractive layers interact with light, the effects of the two different refractive layers on the light are balanced, and effectively improves the light extraction rate.

[0079] Furthermore, such as Figure 6 As shown, Figure 6This is a schematic diagram of the film structure of another display panel provided in an embodiment of this application. In this embodiment, the display panel further includes a substrate 301, a light-emitting layer 201 disposed on the substrate 301, a pixel definition layer 202 disposed on the light-emitting layer 201, and a first optical refractive layer 2031 disposed on the pixel definition layer 202. In this embodiment, when the light-emitting layer 201 and the aforementioned different optical refractive layers are disposed, the light-emitting layer 201 is correspondingly provided with a plurality of light-emitting units 606. Furthermore, the openings 334 in the first optical refractive layer 2031 are correspondingly disposed with the light-emitting units 606. When light is emitted from the light-emitting unit 606, the light can be directly emitted from the corresponding openings 334, thereby ensuring the effect of each refractive layer on the light.

[0080] In this embodiment, the opening width corresponding to the opening 334 can be no less than the width of the corresponding light-emitting unit 606, so that the light emitted by the light-emitting unit 606 can be transmitted out of the opening 334 to the maximum extent, thereby ensuring the light extraction rate.

[0081] Furthermore, this application embodiment also provides a display device. The display device includes the display panel provided in the embodiments of this application. When the display panel is provided, a first optical refractive layer and a second optical refractive layer are provided in the display panel. The first optical refractive layer is provided on the light-emitting side of the display panel and has a plurality of patterned openings. The second optical refractive layer is provided on the side away from the light-emitting side and fills the corresponding openings.

[0082] Meanwhile, the refractive index of the first optical refractive layer is lower than that of the second optical refractive layer. Furthermore, the second optical refractive layer of the display panel also contains nanoparticles, which are metal nanoparticles. When light acts on the metal nanoparticles, a plasmon effect is formed on the surface of the metal nanoparticles, thereby effectively improving the light extraction rate and ensuring the display effect of the display panel.

[0083] In this embodiment, the display panel and the corresponding display device can be any product or component with display or touch functions, such as a mobile phone, computer, electronic paper, monitor, laptop, or digital photo frame, and there are no specific limitations on their specific types.

[0084] In summary, the above description provides a detailed overview of the display panel and display device provided by the embodiments of the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the technical solution and core ideas of the present invention. Although the present invention has been disclosed above with preferred embodiments, the above preferred embodiments are not intended to limit the present invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention is based on the scope defined by the claims.

Claims

1. A display panel, characterized in that, include: substrate; A light-emitting layer is disposed on the substrate; An encapsulation layer is disposed on the light-emitting layer; A first optical refractive layer is disposed on the light-emitting side of the encapsulation layer, and the first optical refractive layer includes a plurality of openings; A second optical refractive layer is disposed on the side of the first optical refractive layer away from the light-emitting layer, and the second optical refractive layer fills the opening; and, Nanoparticles; The nanoparticles are disposed within the second optical refractive layer, and the refractive index of the light corresponding to the first optical refractive layer is less than the refractive index of the light corresponding to the second optical refractive layer. The second optical refractive layer includes a filling portion and a covering portion connected to the filling portion. The filling portion fills the opening, and the covering portion is disposed on the first optical refractive layer. The nanoparticles are disposed within the filling portion and the covering portion. The particle size of the nanoparticles in the filling portion is larger than the particle size of the nanoparticles in the covering portion.

2. The display panel according to claim 1, characterized in that, The nanoparticles are metal nanoparticles, including either gold or silver.

3. The display panel according to claim 1, characterized in that, The density of the nanoparticles disposed in the filling portion is greater than the density of the nanoparticles disposed in the covering portion.

4. The display panel according to claim 1, characterized in that, The nanoparticles are disposed in the area corresponding to the opening of the covering portion; The area of ​​the nanoparticle distribution region is larger than the opening area of ​​the opening.

5. The display panel according to claim 1, characterized in that, The nanoparticles are layered in the thickness direction of the covering portion; The distribution density of the nanoparticles on the side closer to the first optical refractive layer is greater than the distribution density of the nanoparticles on the side farther away from the first optical refractive layer.

6. The display panel according to claim 1, characterized in that, The light refractive index of the first optical refractive layer is set to 1.5-1.6, and the light refractive index of the second optical refractive layer is set to 1.6-2.

0.

7. The display panel according to claim 1, characterized in that, At the opening region, the cross-section of the second optical refractive layer is set to any one of trapezoidal, arc-shaped, and triangular.

8. A display device, characterized in that, Includes the display panel as described in any one of claims 1-7.

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