Display panel and display device

Abstract

Embodiments of the present application provide a display panel and a display device. The display panel includes a substrate, a light-emitting structure layer, and a light adjustment device. The light-emitting structure layer is disposed on one side of the substrate, and the light-emitting structure layer includes a plurality of pixel units of different colors. The light adjustment device is disposed on the side of the light-emitting structure layer away from the substrate, and the light adjustment device includes an organic material layer. The organic material layer includes a variety of organic structures with different refractive indices. The projection of the organic material layer on the substrate does not overlap with the projection of the pixel units on the substrate, and the refractive indices of the organic structures corresponding to the peripheries of the projections of the pixel units of different colors on the substrate are different. According to the display panel in the embodiments of the present application, it is possible to make the light output of the pixel units of different colors at the same angle the same. When the light output at the same angle is the same, different colors of light will be mixed more evenly, thereby improving the color shift of the display panel.

Description

Technical Field

[0001] This application relates to the field of display technologies, and particularly to a display panel and a display device. Background Art

[0002] OLED (Organic Light-Emitting Diode) is a commonly used display panel. With the development of society, OLEDs are widely used in different scenarios, such as mobile phones, tablet computers, in-vehicle display devices, etc. In related technologies, the color shift of OLED display panels is relatively large, and how to improve the color shift of the display panel is an issue that needs to be considered. Summary of the Invention

[0003] The purpose of the embodiments of this application is to provide a display panel and a display device to improve the color shift of the display panel. The specific technical solutions are as follows:

[0004] An embodiment of the first aspect of this application provides a display panel. The display panel includes a substrate, a light-emitting structure layer, and a light adjustment device. The light-emitting structure layer is disposed on one side of the substrate, and the light-emitting structure layer includes a plurality of pixel units of different colors. The light adjustment device is disposed on the side of the light-emitting structure layer away from the substrate. The light adjustment device includes an organic material layer, and the organic material layer includes a variety of organic structures with different refractive indexes. The projection of the organic material layer on the substrate does not overlap with the projection of the pixel units on the substrate, and the refractive indexes of the organic structures corresponding to the peripheries of the projections of the pixel units of different colors on the substrate are different.

[0005] According to the display panel in the embodiments of this application, an organic material layer is disposed on the side of the light-emitting structure layer away from the substrate. The organic material layer includes a variety of organic structures with different refractive indexes, and the refractive indexes of the organic structures disposed on the peripheries of the projections of the pixel units of different colors on the substrate are different. In this embodiment, by disposing organic structures with different refractive indexes on different color pixel units, when light rays of different colors pass through organic structures with different refractive indexes, as the refractive indexes of the organic structures are different, the refraction angles of the light rays of different colors will also be different. Thus, by disposing different organic structures around different color pixel units, it is possible to make the light emission amounts of the light rays emitted by different color pixel units the same at the same angle. When the light emission amounts are the same at the same angle, the light rays of different colors will be mixed more evenly, thereby improving the color shift of the display panel.

[0006] In addition, a display panel according to an embodiment of this application may further have the following technical features:

[0007] In some embodiments of the present application, the projection of the organic structure on the substrate surrounds the projection of the pixel unit on the substrate, and the organic structures in at least two directions of the periphery of the projection of the pixel unit on the substrate have different refractive indices.

[0008] In some embodiments of the present application, the light regulating device further includes a patterned layer, the patterned layer includes patterned structures with a variety of different refractive indices, the projection of the pixel unit on the substrate is located within the projection of the patterned structure on the substrate, and the refractive indices of the patterned structures corresponding to the pixel units of different colors are different.

[0009] In some embodiments of the present application, the pixel unit includes a green pixel, a red pixel, and a blue pixel, the organic structure includes a first material structure, a second material structure, and a third material structure, the first material structure is disposed around the projection of the green pixel on the substrate, the second material structure is disposed around the projection of the red pixel on the substrate, the third material structure is disposed around the projection of the blue pixel on the substrate, and the refractive index of the first material structure, the refractive index of the second material structure, and the refractive index of the third material structure are all different, or any two of them are the same.

[0010] In some embodiments of the present application, the pixel unit includes a green pixel, a red pixel, and a blue pixel, the organic structure includes a first material structure, a second material structure, and a third material structure, the first material structure is disposed around the projection of the green pixel on the substrate, or the second material structure is disposed around the projection of the red pixel on the substrate, or the third material structure is disposed around the projection of the blue pixel on the substrate.

[0011] In some embodiments of the present application, the pixel unit includes a green pixel, a red pixel, and a blue pixel, the patterned structure includes a first patterned structure, a second patterned structure, and a third patterned structure, the green pixel corresponds to the first patterned structure, the red pixel corresponds to the second patterned structure, and the blue pixel corresponds to the third patterned structure.

[0012] In some embodiments of the present application, the organic structure includes a first stacked structure and a second stacked structure arranged in a stacked manner, wherein the second stacked structure is disposed on a side of the first stacked structure away from the substrate, and the refractive index of the first stacked structure is less than the refractive index of the second stacked structure.

[0013] In some embodiments of the present application, the edge of the pattern structure corresponding to the pixel units of one color covers the edge of the pattern structure corresponding to the pixel units of another color.

[0014] In some embodiments of the present application, the display panel further includes a plurality of color filters. The projection of the pixel units on the substrate is located within the projection of the color filters on the substrate, and the color filters corresponding to the pixel units of different colors have different refractive indices.

[0015] In some embodiments of the present application, the display panel includes a flat display area and a curved display area, and the refractive index of the organic material layer located in the curved display area is less than the refractive index of the organic material layer located in the flat display area.

[0016] In some embodiments of the present application, the light regulating device further includes a pixel segmentation layer. The projection of the pixel segmentation layer on the substrate divides the projection of one pixel unit on the substrate into at least two parts with the same area, and the refractive index of the pixel segmentation layer is greater than or equal to 1.4 and less than or equal to 1.6.

[0017] An embodiment of the second aspect of the present application provides a display device, including the display panel in any embodiment of the first aspect.

[0018] According to the display device in the embodiments of the present application, since it includes the display panel in any embodiment of the first aspect, it also has the beneficial effects of any embodiment of the first aspect, which will not be elaborated here. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application, and those of ordinary skill in the art can also obtain other embodiments based on these drawings.

[0020] Figure 1 It is a schematic structural diagram of a display panel in one embodiment of the present application;

[0021] Figure 2 It is a schematic diagram of the refractive index curves of light with different wavelengths in different materials;

[0022] Figure 3 It is a simulation diagram of the front light extraction efficiency of the display panel when the slopes of the organic material layers of the display panel are different;

[0023] Figure 4 It is a top view of a display panel in one embodiment of the present application;

[0024] Figure 5 It is a top view of a display panel in one embodiment of the present application;

[0025] Figure 6 It is a top view of a display panel in one embodiment of the present application;

[0026] Figure 7 It is a top view of a display panel in one embodiment of the present application;

[0027] Figure 8 It is a schematic structural diagram of a display panel in another embodiment of the present application;

[0028] Figure 9 It is a schematic structural diagram of a display panel in another embodiment of the present application;

[0029] Figure 10 It is a top view of a display panel in one embodiment of the present application;

[0030] Figure 11 It is a schematic structural diagram of a display panel in another embodiment of the present application;

[0031] Figure 12 It is a schematic structural diagram of a display panel in another embodiment of the present application;

[0032] Figure 13 It is a schematic structural diagram of a display panel in another embodiment of the present application;

[0033] Figure 14 It is a top view of a display panel in one embodiment of the present application;

[0034] Figure 15 It is a schematic diagram of the viewing angle when a human eye observes the display panel;

[0035] Figure 16 It is a top view of a display panel in one embodiment of the present application.

[0036] The reference numerals are as follows:

[0037] 100 - Substrate;

[0038] 200 - Light - emitting structure layer; 210 - Pixel unit; 211 - Red pixel; 212 - Green pixel; 213 - Blue pixel;

[0039] 300 - Light - regulating device; 310 - Organic material layer; 311 - First material structure; 312 - Second material structure; 313 - Third material structure; 3131 - First stacked structure; 3132 - Second stacked structure; 320 - Patterning layer; 321 - First pattern structure; 322 - Second pattern structure; 323 - Third pattern structure; 330 - Pixel - dividing layer;

[0040] 400 - Planarization layer;

[0041] 501 - First - direction structure; 502 - Second - direction structure; 503 - Third - direction structure; 504 - Fourth - direction structure;

[0042] 600 - Thin - film encapsulation layer. Detailed implementation manners

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following will briefly introduce the drawings required for use in the description of the embodiments or related technologies. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other embodiments can also be obtained based on these drawings.

[0044] For ease of description, spatial relative - relationship terms can be used in the text to describe the relationship of one element or feature shown in the figure relative to another element or feature. These relative - relationship terms are, for example, "inside", "outside", "inner side", "outer side", "below", "beneath", "above", "over", etc. Such spatial relative - relationship terms are intended to include different orientations of the device in use or operation in addition to the orientations depicted in the figure.

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art based on the present application belong to the scope of protection of the present application.

[0046] Such as Figure 1As shown in the figure, an embodiment of the first aspect of the present application provides a display panel. The display panel includes a substrate 100, a light-emitting structure layer 200, and a light-adjusting device 300. The light-emitting structure layer 200 is disposed on one side of the substrate 100, and the light-emitting structure layer 200 includes a plurality of pixel units 210 of different colors. The light-adjusting device 300 is disposed on the side of the light-emitting structure layer 200 away from the substrate 100. The light-adjusting device 300 includes an organic material layer 310. The organic material layer 310 includes a variety of organic structures with different refractive indices. The projection of the organic material layer 310 on the substrate 100 does not overlap with the projection of the pixel units 210 on the substrate 100, and the refractive indices of the organic structures corresponding to the peripheries of the projections of the pixel units 210 of different colors on the substrate 100 are different.

[0047] To clearly illustrate the beneficial effects of the present application, the relationship between the refractive indices of light of different wavelengths in different materials is briefly introduced below.

[0048] As Figure 2 shown in the figure, A is the first material and B is the second material. It can be seen from the figure that the refractive index of light with a wavelength of 380 nm in the first material A is 1.57, and the refractive index of light with a wavelength of 680 nm in the first material A is 1.53. The refractive index of light with a wavelength of 380 nm in the second material B is 1.77, and the refractive index of light with a wavelength of 680 nm in the second material B is 1.7. That is to say, for light of different wavelengths in the same material, the refractive index decreases correspondingly as the wavelength increases, and the refractive indices of the same light in different materials are also different.

[0049] As Figure 3 shown in the figure, Figure 3 shows a simulation diagram of the front light extraction efficiency of the display panel when the slope P of the organic structure of the display panel is different. The slope P refers to the angle between the inclined surface of the organic structure and the plane of the display panel. As Figure 3 shown in the figure, when the slope P of the organic material layer 310 is 60°, the maximum value of the improvement in the front light extraction efficiency of the display panel is 8.4%, and when the slope P of the organic material layer 310 is 80°, the value of the improvement in the front light extraction efficiency of the display panel is only 3.7%. In addition, curve L1 represents the brightness attenuation rate of the display panel when the angle between the viewing angle of a person and the plane where the normal of the display panel is located is 30°, and curve L2 represents the brightness attenuation rate of the display panel when the angle between the viewing angle of a person and the plane where the normal of the display panel is located is 45°. It can be seen from the figure that when the slope P of the organic material layer 310 remains unchanged, the value of the improvement in the front light extraction efficiency of the display panel when the angle between the viewing angle of a person and the plane where the normal of the display panel is located is 30° is greater than the value of the improvement in the front light extraction efficiency of the display panel when the angle between the viewing angle of a person and the plane where the normal of the display panel is located is 45°. InFigure 3 In addition, it can also be obtained that when the slope P of the organic material layer 310 increases, the rate of brightness attenuation of the display panel slows down. From the above analysis, it can be known that when the slope of the organic material layer 310 is 60°, the value of the front light extraction efficiency of the display panel increases the most. Therefore, the slope of the organic material layer 310 can be designed to be 60°. In addition, when the colors of the pixel units 210 are different, the wavelengths of the light are also different, and the refractive indices of lights with different wavelengths in the same material are also different. Therefore, the total reflection angles of the lights are also different. Moreover, the closer the slope of the organic structure is to the total reflection angle, the higher the front light extraction efficiency. Therefore, the slope of the organic structure can be adaptively designed according to the material of the organic structure and the specific color of the pixel unit 210 where the organic structure is located. There is no special limitation in this application.

[0050] According to the display panel in the embodiment of the present application, an organic material layer 310 is disposed on a side of the light-emitting structure layer 200 away from the substrate 100. The organic material layer 310 includes a variety of organic structures with different refractive indices, and the refractive indices of the organic structures disposed around the projections of different-color pixel units 210 on the substrate 100 are different. In this embodiment, by disposing organic structures with different refractive indices on different-color pixel units 210, when lights of different colors pass through organic structures with different refractive indices, as the refractive indices of the organic structures are different, the refraction angles of lights of different colors will also be different. Thus, by disposing different organic structures around different-color pixel units 210, it is possible to make the light emission amounts of lights emitted by different-color pixel units 210 at the same angle the same. When the light emission amounts at the same angle are the same, lights of different colors will be mixed more evenly, thereby improving the color shift of the display panel.

[0051] As Figures 4 to 7 shown, in some embodiments of the present application, the projection of the organic structure on the substrate 100 surrounds the projection of the pixel unit 210 on the substrate 100, and the refractive indices of the organic structures in at least two directions located around the projection of the pixel unit 210 on the substrate 100 are different. In Figure 4 a specific embodiment shown, the organic structure is disposed around a pixel unit 210. The organic structure includes a first-direction structure 501 disposed on the left side of the pixel unit 210, a second-direction structure 502 disposed on the right side of the pixel unit 210, a third-direction structure 503 disposed above the pixel unit 210, and a fourth-direction structure 504 disposed below the pixel unit 210. At least two of the refractive indices of the first-direction structure 501, the second-direction structure 502, the third-direction structure 503, and the fourth-direction structure 504 are different. That is to say, organic structures with different refractive indices can be disposed around the pixel unit 210 according to the orientation of the pixel unit 210. In Figure 5In a specific embodiment, an organic structure is disposed around two pixel units 210. The organic structure includes a first-direction structure 501 disposed on the left side of the two pixel units 210, a second-direction structure 502 disposed on the right side of the two pixel units 210, a third-direction structure 503 disposed above the two pixel units 210, and a fourth-direction structure 504 disposed below the two pixel units 210. At least two of the refractive indices of the first-direction structure 501, the second-direction structure 502, the third-direction structure 503, and the fourth-direction structure 504 are different. In Figure 6 In a specific embodiment, the third-direction structure 503 is disposed above the pixel units 210 in the same row, and the fourth-direction structure 504 is disposed below the pixel units 210 in the same row. In Figure 7 In a specific embodiment, an organic structure is disposed around each pixel unit 210, and the organic structure with different refractive indices can be disposed according to the orientation of the pixel unit 210. In summary, the embodiments of the present application can set organic structures with different refractive indices in the H (Horizontal) direction and the V (Vertical) direction of the pixel units 210 in the display panel, or only in the H direction of the pixel unit 210, or only in the V direction of the pixel unit 210, so as to precisely control the change of the brightness attenuation of different pixel units 210, thereby improving the color shift in the H direction.

[0052] As Figure 8 and Figure 9 shown, in some embodiments of the present application, the light regulating device 300 further includes a patterning layer 320. The patterning layer 320 includes various pattern structures with different refractive indices. The projection of the pixel unit 210 on the substrate 100 is located within the projection of the pattern structure on the substrate 100, and the refractive indices of the pattern structures corresponding to different color pixel units 210 are different. In this embodiment, the projection of the pixel unit 210 on the substrate 100 is located within the projection of the pattern structure on the substrate 100, and the refractive index of the pattern structure can be greater than or equal to 1.65. That is to say, when the pixel unit 210 of the light-emitting structure layer 200 emits light, the light will pass through the pattern structure, so that the light can be converged to increase the light output of the display panel. Moreover, in this embodiment, the pattern structures with different refractive indices can also be set according to different color pixel units 210, so that the light output of the light emitted by different color pixel units 210 at the same angle is the same. When the light output at the same angle is the same, different color lights will be mixed more evenly, thereby improving the color shift of the display panel.

[0053] In a specific embodiment, the refractive index of the pattern structure can be greater than or equal to 1.65, while the refractive index of the organic structure can be between 1.4 and 1.6. In this way, a stacked structure with a high-low refractive index difference can be formed, which can improve the light extraction efficiency of the display panel.

[0054] Please refer to Figure 8 , in some embodiments of the present application, the pixel unit 210 includes a green pixel 212, a red pixel 211, and a blue pixel 213. The organic structure includes a first material structure 311, a second material structure 312, and a third material structure 313. The first material structure 311 is disposed around the projection of the green pixel 212 on the substrate 100. The second material structure 312 is disposed around the projection of the red pixel 211 on the substrate 100. The third material structure 313 is disposed around the projection of the blue pixel 213 on the substrate 100. The refractive indices of the first material structure, the second material structure, and the third material structure are all different, or any two of them have the same refractive index. In this embodiment, the refractive indices of the first material structure, the second material structure, and the third material structure can all be different, or any two of the three have the same refractive index, which can be selected according to specific design requirements. Exemplarily, in the related art, the front efficiency improvement of the blue pixel 213 is relatively low. Therefore, in this embodiment, the refractive index of the third material structure 313 corresponding to the blue pixel 213 can be set to be less than the refractive indices of the first material structure 311 and the second material structure 312 corresponding to the green pixel 212 and the red pixel 211. And the brightness of the green pixel 212 decays the fastest. Therefore, the refractive index of the first material structure 311 corresponding to the green pixel 212 is greater than the refractive index of the second material structure 312 corresponding to the red pixel 211. In a more specific embodiment of the present application, the refractive index of the first material structure 311 corresponding to the green pixel 212 can be made greater than the refractive index of the second material structure 312 corresponding to the red pixel 211, and the refractive index of the second material structure 312 corresponding to the red pixel 211 is greater than the refractive index of the third material structure 313 corresponding to the blue pixel 213. In this way, by disposing organic structures with different refractive indices around different color pixel units 210, the light emission amounts of different color pixel units 210 at the same angle can be made the same. When the light emission amounts at the same angle are the same, different color lights will be mixed more evenly, thereby improving the color shift of the display panel.

[0055] Please refer to Figure 9, in some embodiments of the present application, the pixel unit 210 includes a green pixel 212, a red pixel 211, and a blue pixel 213. The organic structure includes a first material structure 311, a second material structure 312, and a third material structure 313. The first material structure 311 is disposed around the projection of the green pixel 212 on the substrate 100, or the second material structure 312 is disposed around the projection of the red pixel 211 on the substrate 100, or the third material structure 313 is disposed around the projection of the blue pixel 213 on the substrate 100. In this embodiment, the first material structure 311 can be disposed around the green pixel 212 of the display panel, the second material structure 312 can be disposed around the red pixel 211, and the third material structure 313 can be disposed around the blue pixel 213. Alternatively, the corresponding organic structures can be disposed only on the pixel units 210 of any two colors of the display panel. For example, the first material structure 311 is disposed around the green pixel 212 and the second material structure 312 is disposed around the red pixel 211, or the first material structure 311 is disposed around the green pixel 212 and the third material structure 313 is disposed around the blue pixel 213, or the second material structure 312 is disposed around the red pixel 211 and the third material structure 313 is disposed around the blue pixel 213. The corresponding organic structure can also be disposed only on the pixel units 210 of one color of the display panel. For example, the first material structure 311 is disposed around the green pixel 212 only, or the second material structure 312 is disposed around the red pixel 211 only, or the third material structure 313 is disposed around the blue pixel 213 only. The present application has no special limitation on this. Here is a specific embodiment. The display panel can be based on Figure 8 , without disposing the second material structure 312 corresponding to the red pixel 211 in the organic structure. By making the refractive index of the first material structure 311 corresponding to the green pixel 212 greater than the refractive index of the third material structure 313 corresponding to the blue pixel 213, the light emission amount of the light emitted by the green pixel 212 and the light emitted by the red pixel 212 at the same angle can be made close, and the light emission amount of the light emitted by the blue pixel 213 and the red pixel 211 at the same angle can be made close. Thus, the color deviation of the display panel can be improved. Although the effect of improving the color deviation is not as good as that of the embodiment shown in Figure 8 , in this embodiment, the second material structure 312 corresponding to the red pixel 212 is reduced, and the cost brought by depositing the second material structure 312 can be saved. Therefore, it has the advantage of low cost.

[0056] In some embodiments of the present application, other adaptive designs can also be made according to the light attenuation of pixel units 210 of different colors or the size of pixel units 210 of different colors. For example, in some specific embodiments, the display panel does not provide the first material structure 311 corresponding to the green pixels 212, or the display panel does not provide the third material structure 313 corresponding to the blue pixels 213. The above embodiments are only examples of the present application and do not include all the implementable ways of the present application. Therefore, the present application does not make special limitations on whether to provide an organic structure and a pattern structure on the pixel unit 210.

[0057] Please refer to Figure 8 and Figure 9 , in some embodiments of the present application, the pixel unit 210 includes green pixels 212, red pixels 211, and blue pixels 213, and the pattern structure includes a first pattern structure 321, a second pattern structure 322, and a third pattern structure 323. The green pixels 212 correspond to the first pattern structure 321, the red pixels 211 correspond to the second pattern structure 322, and the blue pixels 213 correspond to the third pattern structure 323. In the related art, the front efficiency improvement of the blue pixels 213 is relatively low. Therefore, in this embodiment, the refractive index of the third pattern structure 323 corresponding to the blue pixels 213 can be set to be less than the refractive indices of the first pattern structure 321 and the second pattern structure 322 corresponding to the green pixels 212 and the red pixels 211. And the brightness of the green pixels 212 decays the fastest. Therefore, the refractive index of the first pattern structure 321 corresponding to the green pixels 212 is greater than the refractive index of the second pattern structure 322 corresponding to the red pixels 211. In a more specific embodiment of the present application, the refractive index of the first pattern structure 321 corresponding to the green pixels 212 in the display panel is greater than the refractive index of the second pattern structure 322 corresponding to the red pixels 211, and the refractive index of the second pattern structure 322 corresponding to the red pixels 211 is greater than the refractive index of the third pattern structure 323 corresponding to the blue pixels 213. Thus, by providing organic structures with different refractive indices around pixel units 210 of different colors, the light emitted by pixel units 210 of different colors can have the same light output at the same angle. When the light output is the same at the same angle, different colors of light will be mixed more evenly, thereby improving the color shift of the display panel. The embodiments of the present application can provide organic structures with different refractive indices in the H (Horizontal) direction and the V (Vertical) direction of the pixel unit 210 in the display panel, or only in the H direction of the pixel unit 210, or only in the V direction of the pixel unit 210 to precisely control the change in the brightness attenuation of different pixel units 210, thereby improving the color shift in the H direction.

[0058] As Figure 10 shown, in some embodiments, a patterned layer 320 and an organic material layer 310 may be disposed on some pixel units 210, only the patterned layer 320 may be disposed on some pixel units 210, and only the organic material layer 310 may be disposed on some pixel units 210. In this embodiment, since the brightness attenuation of pixel units 210 of different colors is different, different pixel units 210 of different colors can be designed separately according to design requirements. Whether to dispose the patterned layer 320 and the organic material layer 310 on the pixel unit 210 depends on the color of the pixel unit 210, the size of the pixel unit 210, the attenuation of different colors in different materials, etc.

[0059] As Figure 11 shown, in some embodiments of the present application, the organic structure includes a first stacked structure 3131 and a second stacked structure 3132 which are stacked. Among them, the second stacked structure 3132 is disposed on a side of the first stacked structure 3131 away from the substrate 100, and the refractive index of the first stacked structure 3131 is less than the refractive index of the second stacked structure 3132. In the related art, when the light-emitting structure layer 200 emits light, the light will be emitted in multiple directions. Among them, a part of the light will be emitted to the side of the light-emitting structure layer 200, and the light emitted from the side of the light-emitting structure layer 200 will cause a part of the light not to be emitted from the light-emitting surface of the display panel, which will undoubtedly cause a certain amount of light emission loss. In this embodiment, since the first stacked structure 3131 and the second stacked structure 3132 form a stacked structure with different refractive indexes, and the refractive index of the first stacked structure 3131 is less than the refractive index of the second stacked structure 3132, even if there is light emission from the side of the light-emitting structure layer 200, the light emitted from the side can be refracted into front light emission through the refractive index difference of the stacked structure, so as to increase the front light emission efficiency of the light-emitting structure layer 200.

[0060] As Figure 12 and Figure 13 shown, in some embodiments of the present application, the edge of the pattern structure corresponding to one color of pixel units 210 covers the edge of the pattern structure corresponding to another color of pixel units 210. In a specific embodiment, please refer to Figure 12 , the pattern structure includes a first pattern structure 321, a second pattern structure 322, and a third pattern structure 323. When depositing the pattern structure, the second pattern structure 322 may be deposited first, and then the first pattern structure 321 may be deposited. At this time, the edge of the first pattern structure 321 covers the edges on both sides of the second pattern structure 322. Finally, the third pattern structure 323 is deposited, and the edge of the third pattern structure 323 covers the first pattern structure 321 deposited on the edge of the second pattern structure 322. In another specific embodiment, please refer toFigure 13 The pattern structure includes a first pattern structure 321, a second pattern structure 322, and a third pattern structure 323. When depositing the pattern structure, the second pattern structure 322 can be deposited first, and then the first pattern structure 321 is deposited. At this time, the edge of the first pattern structure 321 covers the edge on one side of the second pattern structure 322, and the first pattern structure 321 can cover a part of the area of the second pattern structure 322, and the first pattern structure 321 does not cover the edge of the second pattern structure 322. Finally, the third pattern structure 323 is deposited. The third pattern structure 323 covers the edge of the second pattern structure 322, and the third pattern structure 323 covers the first pattern structure 321 located on a part of the area of the second pattern structure 322. In this embodiment, by making the edge of the pattern structure corresponding to the pixel unit 210 of one color cover the edge of the pattern structure corresponding to the pixel unit 210 of another color, a stacked structure can be formed. This stacked structure can make more light rays refracted from the side light emission of the pixel unit 210 exit from the front of the display panel, so as to increase the light emission amount of the display panel.

[0061] In summary, the embodiments of the present application can precisely control the change of the brightness attenuation of different pixel units 210 by setting patterned layers 320 and organic material layers 310 with different refractive indexes in the H direction and the V direction of the pixel units 210 in the display panel, thereby improving the color shift in the H direction and the V direction.

[0062] In some embodiments of the present application, the display panel further includes a plurality of color filters. The projection of the pixel unit 210 on the substrate 100 is located within the projection of the color filter on the substrate 100. The color filters corresponding to the pixel units 210 of different colors have different refractive indexes. In this embodiment, the color filter is a CF (Color Filter), and the projection of the pixel unit 210 on the substrate 100 is located within the projection of the color filter on the substrate 100. That is to say, each color filter corresponds to the pixel unit 210 of the light-emitting structure layer 200 one by one. By setting the color filter, the light emission efficiency of the display panel can be improved. Moreover, the color filters corresponding to the pixel units 210 of different colors have different refractive indexes, so that the light emission amounts of the light rays emitted by the pixel units 210 of different colors at the same angle are the same. When the light emission amounts at the same angle are the same, the different color lights will be mixed more evenly, thereby improving the color shift of the display panel.

[0063] Such as Figure 14 and Figure 15As shown, in some embodiments of the present application, the display panel includes a flat display area M and a curved display area N. The refractive index of the organic material layer 310 located in the curved display area N is less than the refractive index of the organic material layer 310 located in the flat display area M. Please refer to Figure 15 , Figure 15 shows a line-of-sight diagram of the human eye E when observing the display panel. The display panel includes a flat display area M and a curved display area N. The angle at which the human eye E observes the flat display area M is c2, and the angle at which the human eye E observes the curved display area N is c1. As can be seen from Figure 15 , c1 is greater than c2. At this time, at the same observation viewing angle, the brightness of the curved display area N observed by the human eye E is less than the brightness of the flat display area M. In Figure 14 , the flat display area M of the display panel can adopt a first refractive index material, and the curved display areas N on both sides of the display panel can adopt a second refractive index material. The first refractive index material can also be adopted on the other two sides of the display panel. The refractive index of the second refractive index material is less than the refractive index of the first refractive index material. In this embodiment, by making the refractive index of the organic material layer 310 located in the curved display area N less than the refractive index of the organic material layer 310 located in the flat display area M, in this way, the light emitted by the light-emitting structure layer 200 located in the curved display area N can be emitted laterally after passing through the organic material layer 310, so as to increase the lateral light output of the curved display area N, which can reduce the brightness difference from the front display area and avoid the brightness of the observed curved display area N being too dark at the same observation viewing angle.

[0064] In the related art, since the lateral light output of the display panel is refracted by the organic material layer 310 to the front and emitted from the front, although the front light output of the display panel can be improved, it is also easy to cause serious attenuation of the lateral light output brightness of the display panel. Therefore, the pixel unit 210 can be designed individually according to the specific design requirements of the display panel.

[0065] Such as Figure 16As shown, in some embodiments of the present application, the light modulation device 300 further includes a pixel segmentation layer 330. The projection of the pixel segmentation layer 330 on the substrate 100 divides the projection of one pixel unit 210 on the substrate 100 into at least two parts with the same area. The refractive index of the pixel segmentation layer 330 is greater than or equal to 1.4 and less than or equal to 1.5. In this embodiment, the pixel segmentation layer 330 divides the pixel unit 210 into at least two parts with the same area. Since the refractive index of the pixel segmentation layer 330 is greater than or equal to 1.4 and less than or equal to 1.5, when the light emitted by the pixel unit 210 passes through the pixel segmentation layer 330, the light can be dispersed and emitted from the side. By setting the organic material layer 310, although the front light extraction efficiency can be improved, it is also easy to cause serious attenuation of the light extraction brightness on the side. By setting the pixel segmentation layer 330, the light can be dispersed to the side, which can slow down the brightness attenuation on the side of the display panel.

[0066] In some embodiments of the present application, the display panel further includes a thin film encapsulation layer 600 (Thin Film Encapsulation, TFE), and the light modulation device 300 is disposed between the thin film encapsulation layer 600 and the light emitting structure layer 200. Different from Figure 7 the case where the light modulation device 300 is disposed on the side of the thin film encapsulation layer 600 away from the light emitting structure layer 200, in this embodiment, the light modulation device 300 can also be disposed between the thin film encapsulation layer 600 and the light emitting structure layer 200, which can also make the light extraction amounts of the light emitted by different color pixel units 210 at the same angle the same. When the light extraction amounts at the same angle are the same, different color lights will be mixed more evenly, thereby improving the color shift of the display panel.

[0067] In some specific embodiments of the present application, the display panel further includes a planarization layer 400, and the planarization layer 400 is disposed on the side of the light modulation device 300 away from the substrate 100. In this embodiment, by setting the planarization layer 400, the light modulation device 300 can be prevented from being exposed.

[0068] An embodiment of the second aspect of the present application provides a display device, including the display panel in any embodiment of the first aspect.

[0069] According to the display device in the embodiments of the present application, since it includes the display panel in any of the embodiments of the first aspect, it also has the beneficial effects of any of the embodiments of the first aspect. Specifically, in the display panel in the embodiments of the present application, an organic material layer 310 is provided on the side of the light-emitting structure layer 200 away from the substrate 100. The organic material layer 310 includes a variety of organic structures with different refractive indices, and the refractive indices of the organic structures provided around the projections of pixel units 210 of different colors on the substrate 100 are different. In this embodiment, organic structures with different refractive indices are provided on pixel units 210 of different colors. In this way, when light of different colors passes through organic structures with different refractive indices, as the refractive indices of the organic structures are different, the refraction angles of light of different colors will also be different. Thus, by providing different organic structures around pixel units 210 of different colors, the light emission amounts of the light emitted by pixel units 210 of different colors at the same angle can be made the same. When the light emission amounts are the same at the same angle, the light of different colors will be mixed more evenly, thereby improving the color shift of the display panel. The display device including this display panel can also achieve the beneficial effect of improving color shift.

[0070] It should be noted that the display device in this embodiment can be: an electronic paper, a mobile phone, a tablet computer, a television, a laptop computer, a digital photo frame, a navigator, or any product or component with a display function.

[0071] It should be pointed out that in the drawings, the dimensions of layers and regions may be exaggerated for clarity of illustration. Moreover, it can be understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element, or there may be an intermediate layer. Additionally, it can be understood that when an element or layer is referred to as being "under" another element or layer, it can be directly under the other element, or there may be more than one intermediate layer or element. Further, it can also be understood that when a layer or element is referred to as being "between" two layers or two elements, it can be the only layer between the two layers or two elements, or there may be more than one intermediate layer or element. Like reference numerals throughout the specification indicate like elements.

[0072] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0073] The various embodiments of the present application are all described in a related manner. For the same or similar parts among the various embodiments, reference may be made to each other, and each embodiment focuses on the differences from other embodiments.

[0074] The above are only the preferred embodiments of the present application and are not intended to limit the protection scope of the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application are all included within the protection scope of the present application.

Claims

1. A display panel, characterized in that, Comprising: A substrate; A light-emitting structure layer disposed on one side of the substrate, the light-emitting structure layer including a plurality of pixel units of different colors; A light adjustment device disposed on the side of the light-emitting structure layer away from the substrate, the light adjustment device including an organic material layer, the organic material layer including a plurality of organic structures with different refractive indexes, the projection of the organic structures on the substrate not overlapping with the projection of the pixel units on the substrate, and the organic structures with different refractive indexes being disposed around the peripheries of the pixel units of different colors; The projection of the organic structures on the substrate surrounds the projection of the pixel units on the substrate, and at least two directions of the organic structures located in the peripheries of the projection of the pixel units on the substrate have different refractive indexes.

2. The display panel according to claim 1, wherein The light adjustment device further includes a patterning layer, the patterning layer including a plurality of pattern structures with different refractive indexes, the projection of the pixel units on the substrate being located within the projection of the pattern structures on the substrate, and the refractive indexes of the pattern structures corresponding to the pixel units of different colors being different.

3. The display panel according to claim 2, wherein The pixel units include green pixels, red pixels, and blue pixels, the organic structures include a first material structure, a second material structure, and a third material structure, the first material structure is disposed around the periphery of the projection of the green pixels on the substrate, the second material structure is disposed around the periphery of the projection of the red pixels on the substrate, the third material structure is disposed around the periphery of the projection of the blue pixels on the substrate, and all of the refractive indexes of the first material structure, the second material structure, and the third material structure are different, or any two of them have the same refractive index.

4. The display panel according to claim 2, wherein The pixel units include green pixels, red pixels, and blue pixels, the organic structures include a first material structure, a second material structure, and a third material structure, the first material structure is disposed around the periphery of the projection of the green pixels on the substrate, or the second material structure is disposed around the periphery of the projection of the red pixels on the substrate, or the third material structure is disposed around the periphery of the projection of the blue pixels on the substrate.

5. The display panel according to claim 2, wherein The pixel units include green pixels, red pixels, and blue pixels, the pattern structures include a first pattern structure, a second pattern structure, and a third pattern structure, the green pixels correspond to the first pattern structure, the red pixels correspond to the second pattern structure, and the blue pixels correspond to the third pattern structure.

6. The display panel according to claim 1, wherein, The organic structures include a first stacked structure and a second stacked structure disposed in a stacked manner, wherein the second stacked structure is disposed on the side of the first stacked structure away from the substrate, and the refractive index of the first stacked structure is less than the refractive index of the second stacked structure.

7. The display panel according to claim 2, wherein The edge of the pattern structure corresponding to one color of the pixel units covers the edge of the pattern structure corresponding to another color of the pixel units.

8. The display panel according to claim 2, wherein, The display panel further includes a plurality of color filters, a projection of the pixel unit on the substrate substrate is located within a projection of the color filter on the substrate substrate, and the color filters corresponding to the pixel units of different colors have different refractive indices.

9. The display panel according to claim 1, wherein The display panel includes a flat display area and a curved display area, and a refractive index of the organic material layer located in the curved display area is less than a refractive index of the organic material layer located in the flat display area.

10. The display panel according to claim 1, wherein The light regulating device further includes a pixel segmentation layer, a projection of the pixel segmentation layer on the substrate substrate divides a projection of one pixel unit on the substrate substrate into at least two parts with the same area, and the refractive index of the pixel segmentation layer is greater than or equal to 1.4 and less than or equal to 1.

6.

11. A display device, characterized in that, A display panel according to any one of claims 1 to 10 is included.

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