Display panel and display device

Abstract

The application discloses a display panel and a display device. The display panel comprises a color filter layer, a black matrix layer, a refractive layer and a light-emitting layer. The refractive layer covers the side surface of the black matrix layer, the color filter layer covers the side surface of the refractive layer, the light-emitting layer is located on the light-incident surface side of the color filter layer, the refractive index of the color filter layer is greater than the refractive index of the refractive layer, and part of the light emitted by the light-emitting layer is emitted from the color filter layer after total reflection of the refractive layer. In the application, the refractive index of the color filter layer is greater than the refractive index of the refractive layer, so that a total reflection surface is formed between the color filter layer and the refractive layer, part of the light originally absorbed by the black matrix layer can be reflected by the total reflection surface and emitted to the color filter layer, the light-emitting efficiency of the display panel is improved, and the power consumption is reduced.

Description

Technical Field

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

[0002] With the demand for cost reduction and thinner screens, more and more display panels are adopting CF (color filter) plus BM (black matrix) technology to replace the polarizer layer.

[0003] However, some of the light emitted by the light-emitting device is absorbed by the black matrix, affecting the display brightness of the display panel, resulting in reduced light emission efficiency and increased power consumption. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a display panel and display device that can integrate a light sensing module without affecting the display performance of the display panel.

[0005] To achieve the above objectives, the present invention first provides a display panel, including a color filter layer, a black matrix layer, a refractive layer and a light-emitting layer. The refractive layer covers the side of the black matrix layer, the color filter layer covers the side of the refractive layer, and the light-emitting layer is located on the light-incident surface side of the color filter layer. The refractive index of the color filter layer is greater than that of the refractive layer. Part of the light emitted from the light-emitting layer is reflected by total internal reflection through the refractive layer and then emitted from the color filter layer.

[0006] Optionally, the color filter layer includes a red filter layer, a green filter layer, and a blue filter layer, and the refractive layer includes a first refractive layer, a second refractive layer, and a third refractive layer, wherein the red filter layer covers the side of the first refractive layer, the green filter layer covers the side of the second refractive layer, and the blue filter layer covers the side of the third refractive layer.

[0007] Optionally, the refractive index of the red filter layer is greater than that of the first refractive layer, the refractive index of the green filter layer is greater than that of the second refractive layer, and the refractive index of the blue filter layer is greater than that of the third refractive layer.

[0008] Optionally, the side tilt angle of the third refractive layer is less than 90° and is greater than or equal to the side tilt angle of the second refractive layer, and the side tilt angle of the second refractive layer is greater than or equal to the side tilt angle of the first refractive layer.

[0009] Optionally, the thickness of the third refractive layer is greater than or equal to the thickness of the second refractive layer, and the thickness of the second refractive layer is greater than or equal to the thickness of the first refractive layer.

[0010] Optionally, the reflectivity of the refractive layer is 1.4 to 1.6, and the refractive index of the color filter layer is 1.5 to 1.75.

[0011] Optionally, the thickness of the color filter layer is greater than or equal to the thickness of the refractive layer, and the thickness of the refractive layer is greater than or equal to the thickness of the black matrix layer.

[0012] Optionally, the light-emitting layer includes multiple light-emitting units, the color filter layer covers the pixel opening area of ​​the black matrix layer, and the light-emitting units are located on the light-incident surface side of the pixel opening area.

[0013] Optionally, the light-emitting unit is located on the substrate, and the center point of the projection of the color filter layer on the substrate overlaps with the center point of the light-emitting unit.

[0014] The present invention also provides a display device, including a device body and the aforementioned display panel, wherein the display panel is disposed on the device body.

[0015] Compared with the prior art, the beneficial effects of the present invention include: the display panel of the present invention includes a color filter layer, a black matrix layer, a refractive layer, and a light-emitting layer. The refractive layer covers the side of the black matrix layer, the color filter layer covers the side of the refractive layer, and the light-emitting layer is located on the light-incident surface side of the color filter layer. The refractive index of the color filter layer is greater than that of the refractive layer. Part of the light emitted from the light-emitting layer undergoes total internal reflection by the refractive layer and is then emitted from the color filter layer. In the present invention, the refractive index of the color filter layer is greater than that of the refractive layer, which allows a total internal reflection surface to be formed between the color filter layer and the refractive layer. This allows some of the light originally absorbed by the black matrix layer to be reflected by the total internal reflection surface and emitted towards the color filter layer, thereby improving the light extraction efficiency of the display panel and reducing power consumption. Attached Figure Description

[0016] 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 invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the film layer of the display panel in an embodiment of the present invention. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the film layer of the display panel in an embodiment of the present invention. Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the film layer of the display panel in an embodiment of the present invention. Figure 3 ;

[0020] Figure 4 This is a schematic diagram of the refractive layer structure in an embodiment of the present invention. Figure 1 ;

[0021] Figure 5 This is a schematic diagram of the refractive layer structure in an embodiment of the present invention. Figure 2 . Detailed Implementation

[0022] The following descriptions of the embodiments are with reference to the accompanying illustrations, illustrating specific embodiments in which the invention can be implemented. In the description of the 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 based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the module 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 indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of the invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0024] This invention provides a display panel, such as... Figure 1 and Figure 2 As shown, it includes a color filter layer 1, a black matrix layer 2, a refractive layer 3, and a light-emitting layer 4. The refractive layer 3 covers the side of the black matrix layer 2, the color filter layer 1 covers the side of the refractive layer 3, and the light-emitting layer 4 is located on the light-incident surface of the color filter layer 1. The refractive index of the color filter layer 1 is greater than that of the refractive layer 3. Some of the light emitted from the light-emitting layer 4 is reflected by the total internal reflection of the refractive layer 3 and then emitted from the color filter layer 1.

[0025] In this embodiment, since the refractive index of the color filter layer 1 is greater than that of the refractive index of the refractive layer 3, a total reflection surface can be formed between the color filter layer 1 and the refractive layer 3. This allows some of the light that was originally directed toward the sidewall of the black matrix and absorbed by the black matrix layer 2 to be reflected by the total reflection surface and emitted toward the color filter layer 1, thereby improving the light emission efficiency of the display panel and reducing power consumption.

[0026] In one embodiment, such as Figure 3 As shown, the color filter layer 1 includes a red filter layer 11, a green filter layer 12, and a blue filter layer 13. The refractive layer 3 includes a first refractive layer 31, a second refractive layer 32, and a third refractive layer 33. The red filter layer 11 covers the side of the first refractive layer 31, the green filter layer 12 covers the side of the second refractive layer 32, and the blue filter layer 13 covers the side of the third refractive layer 33.

[0027] The refractive indices of the first refractive layer 31, the second refractive layer 32, and the third refractive layer 33 can be adjusted and adapted according to the different colors of the color filter layer 1 to further improve the light output efficiency of red, green, and blue light in the display panel, thereby improving the overall light output efficiency of the display panel and thus better reducing the power consumption of the display panel.

[0028] In one embodiment, the refractive index of the red filter layer 11 is greater than that of the first refractive layer 31, the refractive index of the green filter layer 12 is greater than that of the second refractive layer 32, and the refractive index of the blue filter layer 13 is greater than that of the third refractive layer 33.

[0029] In this way, a first total internal reflection surface can be formed between the red filter layer 11 and the first refractive layer 31, a second total internal reflection surface can be formed between the green filter layer 12 and the second refractive layer 32, and a third total internal reflection surface can be formed between the blue filter layer 13 and the third refractive layer 33. This allows red light to be reflected by the first total internal reflection surface, green light by the second total internal reflection surface, and blue light by the third total internal reflection surface.

[0030] In one embodiment, such as Figure 4 As shown, the side tilt angle θ3 of the third refractive layer 33 is less than 90° and is greater than or equal to the side tilt angle θ2 of the second refractive layer 32. The side tilt angle θ2 of the second refractive layer 32 is greater than or equal to the side tilt angle θ1 of the first refractive layer 31.

[0031] Because the refractive index of blue light is greater than that of green light, and the refractive index of green light is greater than that of red light, θ3≥θ2≥θ1, the output of blue, green and red light can be more uniform, thus improving the display effect of the display panel.

[0032] In one embodiment, the thickness of the color filter layer 1 is greater than or equal to the thickness of the refractive layer 3, and the thickness of the refractive layer 3 is greater than or equal to the thickness of the black matrix layer 2. Specifically, as... Figure 5 As shown, let the thickness of the refractive layer be h1, the thickness of the black matrix layer be h2, and the thickness of the color filter layer be h3. Then, h3 ≥ h1 ≥ h2. This ensures that the color filter layer 1 can cover the refractive layer 3, and the refractive layer 3 can cover the black matrix layer 2, preventing the sides of the black matrix layer 2 from being exposed.

[0033] In one embodiment, the thickness of the third refractive layer 33 is greater than or equal to the thickness of the second refractive layer 32, and the thickness of the second refractive layer 32 is greater than or equal to the thickness of the first refractive layer 31. This allows for better adjustment of the side tilt angles of the third refractive layer 33, the second refractive layer 32, and the first refractive layer 31. Let the thickness of the first refractive layer 31 be h11, the thickness of the second refractive layer 32 be h12, and the thickness of the third refractive layer 33 be h13, then h13 ≥ h12 ≥ h11.

[0034] In this embodiment, the thickness of the red filter layer 11 is h31, the thickness of the green filter layer 12 is h32, and the thickness of the blue filter layer 13 is h33, so h31≥h32≥h33. This allows for more uniform emission of red, green, and blue light.

[0035] In one embodiment, the reflectivity of the refractive layer 3 is 1.4 to 1.6, and the refractive index of the color filter layer 1 is 1.5 to 1.75. That is, the reflectivity of the first refractive layer 31, the second refractive layer 32, and the third refractive layer 33 are all in the range of 1.4 to 1.6, and the refractive indices of the red filter layer 11, the green filter layer 12, and the blue filter layer 13 are all in the range of 1.5 to 1.75.

[0036] In one embodiment, the light-emitting layer 4 includes a plurality of light-emitting units 41, the color filter layer 1 covers the pixel opening area 21 of the black matrix layer 2, and the light-emitting units 41 are located on the light-incident surface side of the pixel opening area 21.

[0037] Specifically, the light-emitting unit 41 can be an OLED (Organic Light-Emitting Diode), including a red OLED device R, a green OLED device G, and a blue OLED device B.

[0038] The luminescent material of the blue OLED device B can be a fluorescent material, a TADF (thermally activated delayed fluorescence) material, or a superfluorescent material. The luminescent materials of the red OLED device R and the green OLED device G can be single host-dopant phosphorescent materials or pre-mix host-dopant materials.

[0039] In one embodiment, the light-emitting unit 41 is located on the substrate, and the center point of the projection of the color filter layer 1 onto the substrate overlaps with the center point of the light-emitting unit 41. This allows more light from the light-emitting unit 41 to be directed more evenly onto the color filter layer 1, improving the display effect of the display panel.

[0040] The black matrix layer 2 includes multiple light-shielding bodies 22, and the area between two adjacent light-shielding bodies 22 is a pixel opening region 21. Each light-shielding body 22 has two sides covered with refractive layers of different refractive indices; for example, one side is covered with a first refractive layer, and the other side is covered with a second refractive layer. The first and second refractive layers have different refractive indices.

[0041] In one embodiment, such as Figure 4 As shown, in a single pixel opening region 21, the refractive layer 3 covers the light-shielding bodies 22 on both sides of the pixel opening region 21, forming two tilt angles. The first refractive layer 31 has tilt angles θ1 and θ4, which can be equal or unequal. The second refractive layer 32 has tilt angles θ2 and θ5, which can be equal or unequal. The third refractive layer 33 has tilt angles θ3 and θ6, which can be equal or unequal. In this embodiment, preferably, θ1 = θ4, θ2 = θ5, and θ3 = θ6, which allows for more uniform light output from the red filter layer 11, green filter layer 12, and blue filter layer 13.

[0042] In one embodiment, the angles θ1, θ2, and θ3 range from 30° to 75°, for example, 60°. This allows for better light reflection.

[0043] In one embodiment, the material composition of the black matrix layer includes a light-shielding material, an alkali-soluble resin, a reactive monomer, a photoinitiator, a first solvent, and additives; the light-shielding material includes carbon black and black porous titanium dioxide particles.

[0044] Specifically, in the black matrix material composition, the mass parts of each component are as follows: 5-20 parts of light-shielding material, 5-8 parts of alkali-soluble resin, 0.2-0.6 parts of photoinitiator, 5-8 parts of reactive monomer, 70-85 parts of first solvent, and 0.1-0.2 parts of additive.

[0045] Specifically, the black porous titanium dioxide particles are black porous titanium dioxide particles modified with surfactants to enhance their dispersibility in the first solvent. The surfactants may include one or more of the following materials: polyvinylpyrrolidone, sodium dodecyl sulfonate, sodium dodecylbenzene sulfonate, sodium dodecyl sulfate, etc.

[0046] The black matrix material composition further includes a dispersing monomer for further improving the dispersibility of the surfactant in the first solvent. The dispersing monomer includes one or more of styrene, acrylic acid, alkyl acrylate, alkyl methacrylate, aryl methacrylate, alcohol methacrylate, and alkyl aryl methacrylate. Preferably, the dispersing monomer is one of styrene, butyl acrylate, and methacrylic acid.

[0047] By modifying the black porous titanium dioxide particles with surfactants and setting dispersion monomers, the black porous titanium dioxide particles do not aggregate in the black matrix material composition, and their distribution position is not fixed, but they exist uniformly in each component of the black matrix material composition.

[0048] Specifically, the black matrix material composition also includes a dispersant. The content of the dispersing monomer and the dispersant can be designed according to specific product requirements, ensuring that all components in the black matrix material composition are mixed uniformly.

[0049] The first solvent is an aqueous solvent; for example, the first solvent can be water or an alcohol solvent.

[0050] It should be noted that the black matrix material composition of the present invention contains black porous titanium dioxide particles. The black porous titanium dioxide particles have high porosity, excellent diffuse reflection effect and very low specular reflectivity. Therefore, during the exposure of the black matrix material composition to produce a black matrix, the black porous titanium dioxide particles can scatter ultraviolet light, allowing the photoinitiator and reactive monomers in the black matrix material composition to absorb more ultraviolet light, thereby improving curing efficiency. Furthermore, when the resulting black matrix is ​​used for light shielding, the black porous titanium dioxide particles can effectively reduce the reflection of light by the black matrix, thereby reducing the reflectivity of the black matrix while ensuring its light shielding performance. This solves the problem of increased overall reflectivity of the black matrix due to carbon black reflection, and significantly improves the light shielding effect of the black matrix.

[0051] In one embodiment, the display panel specifically includes a color filter layer 1, a black matrix layer 2, a refractive layer 3, a light-emitting layer 4, a substrate 5, an encapsulation protective layer 6, a touch layer 7, and a planarization layer 8. The refractive layer 3 covers the side surface of the black matrix layer 2, the color filter layer 1 covers the side surface of the refractive layer 3, the light-emitting layer 4 is located on the light-incident surface of the color filter layer 1, the light-emitting layer 4 is located on the substrate 5, the encapsulation protective layer 6 covers the light-emitting layer 4, the touch layer 7 is located on the encapsulation protective layer 6, the black matrix layer 2 is located on the touch layer 7, and the planarization layer 8 covers both the color filter layer 1 and the black matrix layer 2. The refractive index of the color filter layer 1 is greater than that of the refractive layer 3. Part of the light emitted from the light-emitting layer 4 is reflected by total internal reflection through the refractive layer 3 and then emitted from the color filter layer 1.

[0052] Specifically, the color filter layer 1 includes a red filter layer 11, a green filter layer 12, and a blue filter layer 13, and the refractive layer 3 includes a first refractive layer 31, a second refractive layer 32, and a third refractive layer 33. The red filter layer 11 covers the side of the first refractive layer 31, the green filter layer 12 covers the side of the second refractive layer 32, and the blue filter layer 13 covers the side of the third refractive layer 33.

[0053] The refractive index of the red filter layer 11 is greater than that of the first refractive layer 31, the refractive index of the green filter layer 12 is greater than that of the second refractive layer 32, and the refractive index of the blue filter layer 13 is greater than that of the third refractive layer 33.

[0054] The side tilt angle of the third refractive layer 33 is less than 90° and is greater than or equal to the side tilt angle of the second refractive layer 32. The side tilt angle of the second refractive layer 32 is greater than or equal to the side tilt angle of the first refractive layer 31.

[0055] The refractive index of blue light is greater than that of green light, and the refractive index of green light is greater than that of red light, θ3≥θ2≥θ1.

[0056] The thickness of the third refractive layer 33 is greater than or equal to the thickness of the second refractive layer 32, and the thickness of the second refractive layer 32 is greater than or equal to the thickness of the first refractive layer 31.

[0057] The reflectivity of the refractive layer 3 is 1.4 to 1.6, and the refractive index of the color filter layer 1 is 1.5 to 1.75. That is, the reflectivity of the first refractive layer 31, the second refractive layer 32, and the third refractive layer 33 are all in the range of 1.4 to 1.6, and the refractive indices of the red filter layer 11, the green filter layer 12, and the blue filter layer 13 are all in the range of 1.5 to 1.75.

[0058] In one embodiment, the thickness of the color filter layer 1 is greater than or equal to the thickness of the refractive layer 3, and the thickness of the refractive layer 3 is greater than or equal to the thickness of the black matrix layer 2.

[0059] In the display panel of this embodiment, the refractive index of the color filter layer 1 is greater than that of the refractive layer 3, which allows a total reflection surface to be formed between the color filter layer 1 and the refractive layer 3. This allows some of the light that was originally directed toward the sidewall of the black matrix and absorbed by the black matrix layer 2 to be reflected by the total reflection surface and emitted toward the color filter layer 1, thereby improving the light emission efficiency of the display panel and reducing power consumption.

[0060] This invention also provides a display device, including a device body and a display panel provided in the above embodiments, wherein the display panel is disposed on the device body.

[0061] In the display device of this embodiment, the display panel includes a color filter layer 1, a black matrix layer 2, a refractive layer 3, and a light-emitting layer 4. The refractive layer 3 covers the side of the black matrix layer 2, the color filter layer 1 covers the side of the refractive layer 3, and the light-emitting layer 4 is located on the light-incident surface side of the color filter layer 1. The refractive index of the color filter layer 1 is greater than the refractive index of the refractive layer 3. Part of the light emitted from the light-emitting layer 4 is emitted from the color filter layer 1 after total internal reflection by the refractive layer 3.

[0062] Furthermore, the color filter layer 1 includes a red filter layer 11, a green filter layer 12, and a blue filter layer 13, and the refractive layer 3 includes a first refractive layer 31, a second refractive layer 32, and a third refractive layer 33. The red filter layer 11 covers the side of the first refractive layer 31, the green filter layer 12 covers the side of the second refractive layer 32, and the blue filter layer 13 covers the side of the third refractive layer 33.

[0063] The refractive index of the red filter layer 11 is greater than that of the first refractive layer 31, the refractive index of the green filter layer 12 is greater than that of the second refractive layer 32, and the refractive index of the blue filter layer 13 is greater than that of the third refractive layer 33.

[0064] The side tilt angle of the third refractive layer 33 is less than 90° and is greater than or equal to the side tilt angle of the second refractive layer 32. The side tilt angle of the second refractive layer 32 is greater than or equal to the side tilt angle of the first refractive layer 31.

[0065] The refractive index of blue light is greater than that of green light, and the refractive index of green light is greater than that of red light, θ3≥θ2≥θ1.

[0066] The thickness of the third refractive layer 33 is greater than or equal to the thickness of the second refractive layer 32, and the thickness of the second refractive layer 32 is greater than or equal to the thickness of the first refractive layer 31.

[0067] The reflectivity of the refractive layer 3 is 1.4 to 1.6, and the refractive index of the color filter layer 1 is 1.5 to 1.75. That is, the reflectivity of the first refractive layer 31, the second refractive layer 32, and the third refractive layer 33 are all in the range of 1.4 to 1.6, and the refractive indices of the red filter layer 11, the green filter layer 12, and the blue filter layer 13 are all in the range of 1.5 to 1.75.

[0068] In one embodiment, the thickness of the color filter layer 1 is greater than or equal to the thickness of the refractive layer 3, and the thickness of the refractive layer 3 is greater than or equal to the thickness of the black matrix layer 2.

[0069] In the display panel of this embodiment, the refractive index of the color filter layer 1 is greater than that of the refractive layer 3, which allows a total reflection surface to be formed between the color filter layer 1 and the refractive layer 3. This allows some of the light that was originally directed toward the sidewall of the black matrix and absorbed by the black matrix layer 2 to be reflected by the total reflection surface and emitted toward the color filter layer 1, thereby improving the light emission efficiency of the display panel and reducing power consumption.

[0070] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A display panel, characterized in that, It includes a color filter layer, a black matrix layer, a refractive layer, and a light-emitting layer. The refractive layer covers the side of the black matrix layer, the color filter layer covers the side of the refractive layer, and the light-emitting layer is located on the light-incident surface side of the color filter layer. The refractive index of the color filter layer is greater than that of the refractive layer. Part of the light emitted from the light-emitting layer is totally internally reflected by the refractive layer and then emitted from the color filter layer. The color filter layer includes a red filter layer, a green filter layer, and a blue filter layer. The refractive layer includes a first refractive layer, a second refractive layer, and a third refractive layer. The red filter layer covers the side of the first refractive layer, the green filter layer covers the side of the second refractive layer, and the blue filter layer covers the side of the third refractive layer. The side tilt angle of the third refractive layer is greater than or equal to the side tilt angle of the second refractive layer, and the side tilt angle of the second refractive layer is greater than or equal to the side tilt angle of the first refractive layer. The black matrix layer includes multiple light-shielding bodies, the area between two adjacent light-shielding bodies is a pixel opening area, and the two sides of one light-shielding body are respectively covered with refractive layers with different refractive indices.

2. The display panel according to claim 1, characterized in that, The refractive index of the red filter layer is greater than that of the first refractive layer, the refractive index of the green filter layer is greater than that of the second refractive layer, and the refractive index of the blue filter layer is greater than that of the third refractive layer.

3. The display panel according to claim 1, characterized in that, The side tilt angle of the third refractive layer is less than 90°.

4. The display panel according to claim 1, characterized in that, The thickness of the third refractive layer is greater than or equal to the thickness of the second refractive layer, and the thickness of the second refractive layer is greater than or equal to the thickness of the first refractive layer.

5. The display panel according to claim 1, characterized in that, The reflectivity of the refractive layer is 1.4 to 1.6, and the refractive index of the color filter layer is 1.5 to 1.

75.

6. The display panel according to claim 1, characterized in that, The thickness of the color filter layer is greater than or equal to the thickness of the refractive layer, and the thickness of the refractive layer is greater than or equal to the thickness of the black matrix layer.

7. The display panel according to any one of claims 1 to 6, characterized in that, The light-emitting layer includes multiple light-emitting units, the color filter layer covers the pixel opening area of ​​the black matrix layer, and the light-emitting units are located on the light-incident surface side of the pixel opening area.

8. The display panel according to claim 7, characterized in that, It also includes a substrate, the light-emitting unit is located on the substrate, and the center point of the projection of the color filter layer on the substrate overlaps with the center point of the light-emitting unit.

9. A display device, characterized in that, It includes a device body and a display panel as described in any one of claims 1 to 8, wherein the display panel is disposed on the device body.

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