A display panel and display device

Abstract

Embodiments of the present application provide a display panel and a display device. The display panel comprises a light-emitting structure layer, the light-emitting structure layer comprising a first light-emitting unit, a second light-emitting unit and a third light-emitting unit, the sizes of the first light-emitting unit, the second light-emitting unit and the third light-emitting unit in the horizontal direction on the thickness section of the display panel increasing in turn; a light gain structure located on the side of the light-emitting structure layer away from the substrate, comprising a plurality of prisms and first prism openings, second prism openings and third prism openings formed between each prism, the first prism openings corresponding to the first light-emitting unit, the second prism openings corresponding to the second light-emitting unit, and the third prism openings corresponding to the third light-emitting unit; in the thickness direction of the display panel, the distances from at least two light-emitting units to the corresponding prism openings are different.

Description

TECHNICAL FIELD

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

[0002] In the traditional OLED (Organic Light-Emitting Diode) technology, the light-emitting unit adjusts the power in a white balance manner, so that the product finally presents a white picture.

[0003] In the related technology, as shown in FIG. 1, in order to improve the light efficiency of the product, a light gain structure can be added on the light-emitting side of the light-emitting unit. The light gain structure includes a plurality of prisms 94, and an opening is arranged between each prism 94. The prism opening corresponds to the size of the light-emitting unit. The light emitted by the light-emitting unit is incident into the side surface of the prism 94 after passing through the protective layer 95 at the prism opening. Since the refractive index of the prism 94 is less than that of the protective layer 95, according to the total reflection theorem, when the light is incident from the protective layer 95 to the prism 94, the light with an incident angle θ greater than or equal to the critical angle can be totally reflected at the interface between the prism 94 and the protective layer 95, so as to concentrate the light to the center of the sub-pixel, thereby improving the light efficiency. Figure 1

[0004] However, in different pixel arrangement modes, the size of the light-emitting unit is different. As shown in FIG. 2, a display panel 90 adopts a GGRB pixel arrangement, wherein PX1 is a red sub-pixel, PX2 is a green sub-pixel, and PX3 is a blue sub-pixel. As shown in FIG. 3, on the thickness section of the display panel 90 adopting the GGRB pixel arrangement, the size of the red light-emitting unit 91 is smaller than that of the green light-emitting unit 92, and the size of the green light-emitting unit 92 is smaller than that of the blue light-emitting unit 93. Since the prism opening corresponds to the size of the light-emitting unit, the size of the prism opening corresponding to different color light-emitting units is also different. The difference in the size of the prism opening will lead to inconsistent light gain of different color sub-pixels. Specifically, a larger prism opening will lead to a smaller incident angle of the light on the prism surface, a lower proportion of totally reflected light, and a lower light gain. Correspondingly, a smaller prism opening will lead to a larger incident angle of the light on the prism surface, a higher proportion of totally reflected light, and a higher light gain. Therefore, in the related technology, due to the difference in the size of the light-emitting unit, the size of the prism opening is different, which leads to inconsistent light gain of different color sub-pixels, destroys the display white balance, and causes poor color cast. Figure 2 SUMMARY Figure 3 The purpose of the embodiments of the present application is to provide a display panel and a display device to improve the problem of poor color cast of the display panel. The specific technical solutions are as follows.

[0005] The purpose of the embodiments of the present application is to provide a display panel and a display device to improve the problem of poor color cast of the display panel. The specific technical solutions are as follows. ​​

[0006] Embodiments of the first aspect of the present application provide a display panel, the display panel having a plurality of pixel units arranged in an array, each pixel unit comprising a first sub-pixel, a second sub-pixel and a third sub-pixel, the display panel comprising: a substrate; a pixel defining layer located on one side of the substrate, the pixel defining layer comprising a plurality of pixel openings, the pixel openings corresponding one-to-one to the sub-pixels; a light emitting structure layer comprising a first light emitting unit, a second light emitting unit and a third light emitting unit, the first light emitting unit, the second light emitting unit and the third light emitting unit being respectively located within the pixel openings, the first light emitting unit corresponding to the first sub-pixel, the second light emitting unit corresponding to the second sub-pixel, and the third light emitting unit corresponding to the third sub-pixel; a light gain structure located on a side of the light emitting structure layer distal from the substrate, the light gain structure comprising a plurality of prisms and first prism openings, second prism openings and third prism openings formed between each of the prisms, the first prism openings corresponding to the first light emitting unit, the second prism openings corresponding to the second light emitting unit, and the third prism openings corresponding to the third light emitting unit; in a thickness direction of the display panel, distances from the at least two light emitting units to the corresponding prism openings are different; and a first protective layer covering the light gain structure, the first protective layer having a different refractive index from the light gain structure.

[0007] According to the display panel of the embodiments of the present application, the display panel can also have the following technical features:

[0008] In some embodiments of the present application, in a thickness cross-section of the display panel, a size of each of the light emitting units is proportional to a distance from each of the light emitting units to the corresponding prism opening.

[0009] In some embodiments of the present application, the display panel further comprises a second protective layer, the second protective layer being located between the light emitting structure layer and the light gain structure; in a thickness cross-section of the display panel, the second protective layer is arranged in a stepped manner, the second protective layer comprising a first stepped section, a second stepped section and a third stepped section, the first stepped section corresponding to the first light emitting unit, the second stepped section corresponding to the second light emitting unit, and the third stepped section corresponding to the third light emitting unit; a distance between the first stepped section, the second stepped section and the third stepped section distal from the substrate and the substrate is proportional to a size of the corresponding light emitting unit.

[0010] In some embodiments of the present application, the display panel further comprises a planarization layer between the substrate and the pixel definition layer; on the thickness section of the display panel, the planarization layer is arranged in a stepped shape, the planarization layer comprises a fourth step section, a fifth step section and a sixth step section, the fourth step section corresponds to the first light emitting unit, the fifth step section corresponds to the second light emitting unit, and the sixth step section corresponds to the third light emitting unit; the distance between the side of the fourth step section, the side of the fifth step section and the side of the sixth step section away from the substrate and the substrate is inversely proportional to the size of the corresponding light emitting unit.

[0011] In some embodiments of the present application, the display panel further comprises a second protective layer and a planarization layer; the second protective layer is between the light emitting structure layer and the light gain structure; on the thickness section of the display panel, the second protective layer is arranged in a stepped shape, the second protective layer comprises a first step section, a second step section and a third step section, the first step section corresponds to the first light emitting unit, the second step section corresponds to the second light emitting unit, and the third step section corresponds to the third light emitting unit; the distance between the side of the first step section, the side of the second step section and the side of the third step section away from the substrate and the substrate is proportional to the size of the corresponding light emitting unit; the planarization layer is between the substrate and the pixel definition layer; on the thickness section of the display panel, the planarization layer is arranged in a stepped shape, the planarization layer comprises a fourth step section, a fifth step section and a sixth step section, the fourth step section corresponds to the first light emitting unit, the fifth step section corresponds to the second light emitting unit, and the sixth step section corresponds to the third light emitting unit; the distance between the side of the fourth step section, the side of the fifth step section and the side of the sixth step section away from the substrate and the substrate is inversely proportional to the size of the corresponding light emitting unit.

[0012] In some embodiments of the present application, on the thickness section of the display panel, the side of the prism close to the prism opening is an inclined surface, the included angle between the inclined surface and the horizontal direction is the slope angle, the thickness of the prism is equal, and the slope angle of the side of the prism close to the first prism opening, the slope angle of the side of the prism close to the second prism opening and the slope angle of the side of the prism close to the third prism opening are inversely proportional to the size of the corresponding light emitting unit.

[0013] In some embodiments of the present application, on the thickness section of the display panel, the difference between the size of at least two prism openings and the corresponding light emitting unit is different.

[0014] In some embodiments of the present application, the display panel further comprises a touch layer, the touch layer comprises a plurality of touch electrodes, the prisms cover the touch electrodes, the touch electrodes are located between the projections of two adjacent light emitting units on the substrate, the touch layer further comprises a first auxiliary electrode, the first auxiliary electrode is disposed in the same layer as the touch electrodes, the projection of the first auxiliary electrode on the substrate at least surrounds and covers a part of the projection of the prism opening corresponding to one light emitting unit on the substrate, and the first auxiliary electrode is floating.

[0015] In the embodiments of the present application, the light emitting structure layer comprises a first light emitting unit, a second light emitting unit and a third light emitting unit, the display panel further comprises a light gain structure and a first protective layer, the refractive indexes of the light gain structure and the first protective layer are different, so that the emergent light of the light emitting unit can be totally reflected on the surface of the light gain structure. On the thickness section of the display panel, the distances of at least two light emitting units to the corresponding prism openings are different. This means that the height difference of the incidence of the emergent light of one light emitting unit to the prism surface is increased compared with that of another light emitting unit, so that the incidence angle of the emergent light of the light emitting unit to the prism surface can be increased, thereby the proportion of the emergent light of the light emitting unit being totally reflected on the prism surface is increased, the light emission gain of the sub-pixel is improved, the light emission efficiency of each sub-pixel tends to be consistent, and the white balance state of the display panel is not changed, thereby the color cast is improved.

[0016] In the embodiments of the second aspect of the present application, a display panel is provided, the display panel comprises a plurality of pixel units arranged in an array, each pixel unit comprises a first sub-pixel, a second sub-pixel and a third sub-pixel, and the display panel comprises: a substrate; a pixel defining layer located on one side of the substrate, the pixel defining layer comprises a plurality of pixel openings, and the pixel openings correspond to the sub-pixels one by one; a light emitting structure layer comprising a first light emitting unit, a second light emitting unit and a third light emitting unit, the first light emitting unit, the second light emitting unit and the third light emitting unit are located in the pixel openings respectively, the first light emitting unit corresponds to the first sub-pixel, the second light emitting unit corresponds to the second sub-pixel, and the third light emitting unit corresponds to the third sub-pixel; a light gain structure located on the side of the light emitting structure layer away from the substrate, the light gain structure comprises a plurality of prisms and first prism openings, second prism openings and third prism openings formed between the prisms, the first prism openings correspond to the first light emitting units, the second prism openings correspond to the second light emitting units, and the third prism openings correspond to the third light emitting units; on the thickness section of the display panel, the difference between the sizes of at least two prism openings and the corresponding light emitting units is different; and a protective layer covering the light gain structure, the refractive indexes of the protective layer and the light gain structure are different.

[0017] According to the display panel provided by the embodiment of the present application, the following technical features can be achieved.

[0018] In some embodiments of the present application, on the thickness cross section of the display panel, the difference between the size of each prism opening and the size of the corresponding light emitting unit is inversely proportional to the size of each light emitting unit.

[0019] In some embodiments of the present application, on the thickness cross section of the display panel, the side of the prism close to the prism opening is a slope, the included angle between the slope and the horizontal direction is the slope angle, the thickness of the prism is equal, and the slope angle of the side of the prism close to the first prism opening, the slope angle of the side of the prism close to the second prism opening, and the slope angle of the side of the prism close to the third prism opening are inversely proportional to the size of the corresponding light emitting unit.

[0020] In some embodiments of the present application, in the thickness direction of the display panel, the distance from at least two light emitting units to the corresponding prism opening is different.

[0021] In some embodiments of the present application, the display panel further comprises a touch layer, the touch layer comprises a plurality of touch electrodes, the prism covers the touch electrode, the projection of the touch electrode on the substrate is between the projections of two adjacent light emitting units on the substrate, the touch layer further comprises a first auxiliary electrode, the first auxiliary electrode is arranged in the same layer as the touch electrode, the projection of the first auxiliary electrode on the substrate at least surrounds and covers a part of the projection of the prism opening corresponding to one light emitting unit on the substrate, and the first auxiliary electrode is floating.

[0022] In the embodiment of the present application, the light-emitting structure layer includes a first light-emitting unit, a second light-emitting unit and a third light-emitting unit, the display panel includes a light gain structure and a first protective layer, and the refractive indexes of the light gain structure and the first protective layer are different, so that the emergent light of the light-emitting unit can be totally reflected on the surface of the light gain structure. On the thickness section of the display panel, the size difference between at least two prism openings and the corresponding light-emitting unit is different. In the related art, the size of the prism opening corresponds to the size of the light-emitting unit, that is, the size difference between the prism opening and the light-emitting unit is zero. However, in the embodiment of the present application, the size difference between at least two prism openings and the corresponding light-emitting unit is different, which means that, compared with one light-emitting unit, the size of the prism opening corresponding to another light-emitting unit is larger. Since the larger the size of the prism opening is, the smaller the incidence angle of the emergent light on the prism surface is, by increasing the size of the prism opening corresponding to one light-emitting unit, the incidence angle of the emergent light of the light-emitting unit on the prism surface can be reduced, the proportion of the emergent light being totally reflected on the prism surface is reduced, and thus the light emission gain of the sub-pixel is inhibited, the light emission efficiency of each sub-pixel tends to be consistent, and further, the white balance state of the display panel is unchanged, and the color cast is improved.

[0023] In the embodiment of the present application, the light-emitting structure layer includes a first light-emitting unit, a second light-emitting unit and a third light-emitting unit, the display panel includes a light gain structure and a first protective layer, and the refractive indexes of the light gain structure and the first protective layer are different, so that the emergent light of the light-emitting unit can be totally reflected on the surface of the light gain structure. On the thickness section of the display panel, the size difference between at least two prism openings and the corresponding light-emitting unit is different. In the related art, the size of the prism opening corresponds to the size of the light-emitting unit, that is, the size difference between the prism opening and the light-emitting unit is zero. However, in the embodiment of the present application, the size difference between at least two prism openings and the corresponding light-emitting unit is different, which means that, compared with one light-emitting unit, the size of the prism opening corresponding to another light-emitting unit is larger. Since the larger the size of the prism opening is, the smaller the incidence angle of the emergent light on the prism surface is, by increasing the size of the prism opening corresponding to one light-emitting unit, the incidence angle of the emergent light of the light-emitting unit on the prism surface can be reduced, the proportion of the emergent light being totally reflected on the prism surface is reduced, and thus the light emission gain of the sub-pixel is inhibited, the light emission efficiency of each sub-pixel tends to be consistent, and further, the white balance state of the display panel is unchanged, and the color cast is improved.

[0024] According to the display panel provided by the embodiment of the present application, the following technical features can be achieved.

[0025] In some embodiments of the present application, the projection of the first auxiliary electrode on the substrate surrounds and covers a part of the projection of the prismatic opening corresponding to the light emitting unit with the smallest size among the three light emitting units, the touch control layer further comprises a second auxiliary electrode, the second auxiliary electrode and the touch control electrode are arranged in the same layer, the projection of the second auxiliary electrode on the substrate surrounds and covers a part of the projection of the prismatic opening corresponding to the light emitting unit with the smaller size among the remaining two light emitting units, the area covered by the projection of the first auxiliary electrode on the projection of the corresponding prismatic opening is larger than the area covered by the projection of the second auxiliary electrode on the projection of the corresponding prismatic opening, and the second auxiliary electrode is floating.

[0026] In some embodiments of the present application, the touch control layer further comprises a touch control insulating layer; the touch control electrode comprises a touch control pattern electrode and a bridge electrode, the touch control pattern electrode comprises a touch control transmitting electrode and a touch control receiving electrode; the touch control pattern electrode is located on the side of the touch control insulating layer away from the substrate, the bridge electrode is located on the side of the touch control insulating layer close to the substrate, and the first auxiliary electrode and the touch control pattern electrode are arranged in the same layer; or, the bridge electrode is located on the side of the touch control insulating layer away from the substrate, the touch control pattern electrode is located on the side of the touch control insulating layer close to the substrate, and the first auxiliary electrode and the bridge electrode are arranged in the same layer.

[0027] In some embodiments of the present application, on the thickness section of the display panel, the side of the prisms close to the prismatic openings is a slope, the included angle between the slope and the horizontal direction is a slope angle, the thicknesses of the prisms are equal, and the slope angles of the side of the prisms close to the first prismatic opening, the side of the prisms close to the second prismatic opening and the side of the prisms close to the third prismatic opening are inversely proportional to the sizes of the corresponding light emitting units.

[0028] In some embodiments of the present application, in the thickness direction of the display panel, the distances from the at least two light emitting units to the corresponding prismatic openings are different.

[0029] In some embodiments of the present application, on the thickness section of the display panel, the differences between the sizes of the at least two prismatic openings and the corresponding light emitting units are different.

[0030] In the embodiments of the present application, the display panel comprises a touch layer, the touch layer is located between the light-emitting structure layer and the light gain structure, the touch layer 800 comprises a touch electrode 810, and the touch layer 800 further comprises a first auxiliary electrode 812, the first auxiliary electrode 812 at least surrounds and covers a part of a projection of the prismatic opening corresponding to one light-emitting unit on the substrate 100, so that the first auxiliary electrode 812 can block part of the light emitted by the light-emitting unit, thereby reducing the number of light rays entering the surface of the prism 410 and inhibiting the light gain of the sub-pixel. Thus, the light emission efficiency of each sub-pixel tends to be consistent, thereby being conducive to keeping the white balance of the display panel unchanged and improving the color cast.

[0031] An embodiment of the fourth aspect of the present application provides a display device, comprising the display panel of the first aspect or the second aspect or the third aspect.

[0032] According to the display device in the embodiments of the present application, since the display device has the display panel of the first aspect or the second aspect or the third aspect, the display device also has the beneficial effects of any one of the embodiments of the first aspect or any one of the embodiments of the second aspect or any one of the embodiments of the third aspect, which will not be described here.

[0033] Of course, implementing any product or method of the present application does not necessarily need to achieve all the advantages described above. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other embodiments can also be obtained by those skilled in the art based on these drawings.

[0035] Figure 1 A structural schematic diagram of a display panel with a light gain structure in the related art;

[0036] Figure 2 A top view of a display panel adopting a GGRB pixel arrangement mode in the related art;

[0037] Figure 3 A sectional view of A-A of Figure 2

[0038] Figure 4 A structural schematic diagram of a display panel of the first aspect of the present application in Embodiment One;

[0039] Figure 5 A structural schematic diagram of a display panel of the first aspect of the present application in Embodiment Two;

[0040] Figure 6 ​This is a schematic diagram of the display panel structure according to Embodiment 3 of the first aspect of this application;

[0041] Figure 7 For this application Figure 6 A schematic diagram showing the relationship between the prism height and the angle of incidence of light in the embodiment shown;

[0042] Figure 8 For this application Figure 6 A geometrical schematic diagram of the height of the prism and the light-emitting unit and the angle of incidence of light in the embodiment shown;

[0043] Figure 9 This is a schematic diagram of the display panel structure according to Embodiment 4 of the first aspect of this application;

[0044] Figure 10 For this application Figure 9 A schematic diagram showing the relationship between the slope angle and the incident angle of light in the embodiment shown;

[0045] Figure 11 This is a schematic diagram of the display panel structure according to Embodiment 1 of the second aspect of this application;

[0046] Figure 12 For this application Figure 11 A schematic diagram showing the relationship between the prism opening size and the incident angle of light in the embodiment shown;

[0047] Figure 13 This is a schematic diagram of the display panel structure according to Embodiment 2 of the second aspect of this application;

[0048] Figure 14 This is a schematic diagram of the structure of the display panel according to Embodiment 1 of the third aspect of this application;

[0049] Figure 15 for Figure 14 An enlarged schematic diagram of part C;

[0050] Figure 16 for Figure 14 An enlarged schematic diagram of part D;

[0051] Figure 17 This is a schematic diagram showing the arrangement of the second metal layer of the display panel according to a third aspect embodiment of this application;

[0052] Figure 18 This is a schematic diagram of the structure of a display panel according to Embodiment 1 of the third aspect of this application (showing the second metal layer);

[0053] Figure 19 This is a schematic diagram of the display panel structure according to Embodiment 2 of the third aspect of this application;

[0054] Figure 20 This is a schematic diagram of the structure of the display panel according to Embodiment 3 of the third aspect of this application;

[0055] Figure 21 Structure diagram of a display panel of embodiment four of the third aspect of the present application;

[0056] Figure 22 Structure diagram of a display panel of embodiment five of the third aspect of the present application;

[0057] Figures 1-3 In the figure: display panel 90; red light emitting unit 91; green light emitting unit 92; blue light emitting unit 93; prism 94; protective layer 95; red sub-pixel PX1; green sub-pixel PX2; blue sub-pixel PX3; incident angle θ; prism opening gap;

[0058] Figures 4 to 22 In the figure: display panel 10; substrate 100; pixel definition layer 200; light emitting structure layer 300; first light emitting unit 310; second light emitting unit 320; third light emitting unit 330; light gain structure 400; prism 410; first prism opening 420; second prism opening 430; third prism opening 440; protective layer 500; second protective layer 510; first step section 511; second step section 512; third step section 513; first protective layer 520; planarization layer 600; fourth step section 610; fifth step section 620; sixth step section 630; encapsulation layer 700; touch layer 800; touch electrode 810; bridge electrode 811; first auxiliary electrode 812; second auxiliary electrode 813; touch insulating layer 820; touch pattern electrode 830; touch transmission electrode 831; touch receiving electrode 832; touch signal transmission line 833; touch signal receiving line 834; first sub-pixel PX11; second sub-pixel PX12; third sub-pixel PX13; incident angle θ0; display area AA, frame area AB. DETAILED DESCRIPTION

[0059] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not 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.

[0060] As described in the background, in the related art, such as Figure 1As shown, in order to improve the light emission efficiency of the product, a light gain structure can be added on the light emission side of the light emitting unit, the light gain structure including a plurality of prisms 94, and an opening is arranged between each prism 94, and the prism opening corresponds to the size of the light emitting unit. The light emitted by the light emitting unit is incident into the side surface of the prism 94 after passing through the protective layer 95 at the prism opening. Since the refractive index of the prism 94 is less than the refractive index of the protective layer 95, according to the total reflection theorem, when the light is emitted from the protective layer 95 to the prism 94, the light with an incident angle θ greater than or equal to the critical angle can be totally reflected at the interface between the prism 94 and the protective layer 95, so as to concentrate the light towards the center of the sub-pixel, thereby improving the light emission efficiency. The critical angle is related to the refractive index of the protective layer 95 and the prism 94. Specifically, when the refractive index of the protective layer 95 is n1 and the refractive index of the prism 94 is n2, the total reflection critical angle θc is equal to arcsin (n2 / n1).

[0061] However, through experiments of the inventors, as shown in Table 1, in different pixel arrangement modes, the size of the light emitting unit is different, and the size difference of the light emitting unit leads to the size difference of the prism opening, resulting in inconsistent light emission gain of different color sub-pixels.

[0062]

[0063] In Table 1, R corresponds to red light, G corresponds to green light, B corresponds to blue light, and W corresponds to white light emitted after white balance of RGB three primary colors. Δefficiency refers to the light emission efficiency of the display panel at the forward viewing angle, and ΔL-decay@30° refers to the luminance decay of the light with an emission angle of 30°. For RGB sub-pixels, the higher the light emission efficiency at the forward viewing angle, the greater the luminance decay of the side-emitted light, that is, the higher the Δefficiency, and the higher the ΔL-decay@30°.

[0064] As can be seen from the data in Table 1, as the pixel area, that is, the size of the light emitting unit, increases, the efficiency value, that is, the light emission gain, decreases. The reason is that the size of the light emitting unit corresponds to the prism opening, and the large size of the light emitting unit leads to a large prism opening, which leads to a small incident angle of the light on the prism surface, thereby resulting in fewer light rays with an incident angle greater than or equal to the critical angle, a lower proportion of totally reflected light rays, and a lower light emission gain. Correspondingly, the small size of the light emitting unit leads to a small prism opening, which leads to a large incident angle of the light on the prism surface, thereby resulting in more light rays with an incident angle greater than or equal to the critical angle, a higher proportion of totally reflected light rays, and a higher light emission gain.

[0065] Therefore, in the related art, due to the size difference of the light emitting unit, the size difference of the prism opening is caused, resulting in inconsistent light emission gain of different color sub-pixels, which destroys the display white balance and leads to poor color cast.

[0066] In view of this, as shown in Figures 4 to 6 The display panel 10 has a plurality of pixel units arranged in an array, each pixel unit including a first sub-pixel PX11, a second sub-pixel PX12 and a third sub-pixel PX13. The display panel 10 includes a substrate 100, a pixel defining layer 200, a light-emitting structure layer 300 and a light gain structure 400. The pixel defining layer 200 is located on one side of the substrate 100 and includes a plurality of pixel openings corresponding to the sub-pixels one by one. The light-emitting structure layer 300 includes a first light-emitting unit 310, a second light-emitting unit 320 and a third light-emitting unit 330, which are respectively located in the pixel openings. The first light-emitting unit 310 corresponds to the first sub-pixel PX11, the second light-emitting unit 320 corresponds to the second sub-pixel PX12, and the third light-emitting unit 330 corresponds to the third sub-pixel PX13. The light gain structure 400 is located on the side of the light-emitting structure layer 300 away from the substrate 100. The light gain structure 400 includes a plurality of prisms 410 and first prism openings 420, second prism openings 430 and third prism openings 440 formed between each prism 410. The first prism openings 420 correspond to the first light-emitting unit 310, the second prism openings 430 correspond to the second light-emitting unit 320, and the third prism openings 440 correspond to the third light-emitting unit 330. In the thickness direction of the display panel 10, the distances from the at least two light-emitting units to the corresponding prism openings are different.

[0067] In the present embodiment, the light-emitting structure layer 300 includes the first light-emitting unit 310, the second light-emitting unit 320 and the third light-emitting unit 330. The display panel 10 further includes a light gain structure 400 and a first protective layer 520, and the refractive indices of the light gain structure 400 and the first protective layer 520 are different. Thus, the emitted light rays of the light-emitting units can be totally reflected on the surface of the light gain structure. In the present embodiment, in the thickness cross-section of the display panel, the distances from the at least two light-emitting units to the corresponding prism openings are different. This means that, compared with one of the light-emitting units, the incident height difference of the emitted light rays of another light-emitting unit to the surface of the prism 410 is increased. Thus, the incident angle of the emitted light rays of the light-emitting unit to the surface of the prism 410 can be increased, thereby increasing the proportion of the emitted light rays of the light-emitting unit being totally reflected on the surface of the prism 410, improving the light emission gain of the sub-pixel, making the light emission benefits of the sub-pixels consistent, and further helping to keep the white balance of the display panel 10 unchanged and improve the color cast.

[0068] It should be noted that in the embodiments of the present application, the prism 410 can adopt a low refractive index organic material, and the first protective layer 520 can adopt a high refractive index organic material. In a specific embodiment, the refractive index of the prism 410 is 1.51, and the refractive index of the first protective layer 520 is 1.72.

[0069] In an embodiment of the present application, on the thickness section of the display panel 10, the size of each light emitting unit is proportional to the distance from the light emitting unit to the corresponding prism opening. That is, the smaller the size of the light emitting unit, the smaller the distance from the light emitting unit to the corresponding prism opening.

[0070] In a specific embodiment, as shown in FIG. 4, on the thickness section of the display panel 10, the size of the first light emitting unit 310, the second light emitting unit 320, and the third light emitting unit 330 increases in turn, and the distance from the first prism opening 420 to the first light emitting unit 310, the distance from the second prism opening 430 to the second light emitting unit 320, and the distance from the third prism opening 440 to the third light emitting unit 330 increase in turn. Figure 4

[0071] Since the prism opening size corresponds to the light emitting unit, the size of the first prism opening 420, the size of the second prism opening 430, and the size of the third prism opening 440 increase in turn. In the embodiments of the present application, the distance from the first prism opening 420 to the first light emitting unit 310, the distance from the second prism opening 430 to the second light emitting unit 320, and the distance from the third prism opening 440 to the third light emitting unit 330 increase in turn, which means that the difference in the incident height of the emergent light rays of the second light emitting unit 320 and the third light emitting unit 330 to the surface of the prism 410 increases compared with the first light emitting unit 310, thereby increasing the incident angle of the emergent light rays of the second light emitting unit 320 and the third light emitting unit 330 on the surface of the prism 410, improving the proportion of the emergent light rays on the surface of the prism 410 to be totally reflected, improving the light output gain of the second sub-pixel PX12 and the third sub-pixel PX13, making the light output gain of the second sub-pixel PX12 and the third sub-pixel PX13 consistent with the light output efficiency of the first sub-pixel PX11, and further facilitating the white balance state of the display panel 10 to remain unchanged and improving the color cast.

[0072] In a specific embodiment, the display panel 10 adopts a GGRB pixel arrangement, and in a pixel unit, the first sub-pixel PX11 can be a red sub-pixel, the second sub-pixel PX12 can be a green sub-pixel, and the third sub-pixel PX13 can be a blue sub-pixel.

[0073] As shown in FIG. 5, the display panel 10 can adopt a GGBB pixel arrangement, and in a pixel unit, the first sub-pixel PX11 can be a green sub-pixel, the second sub-pixel PX12 can be a blue sub-pixel, and the third sub-pixel PX13 can be a red sub-pixel. Figure 7 ​As shown, taking the second sub-pixel as an example, the higher the height of the prism 410 corresponding to the second light-emitting unit 320, the greater the height difference between the opening of the prism 410 and the second light-emitting unit 320, and the greater the incident angle of the light on the surface of the prism 410.

[0074] Specifically, regarding the relationship between the height difference between the light-emitting unit and the prism opening and the incident angle θ0, as follows: Figure 8 As shown, taking the first sub-pixel PX11 and the third sub-pixel PX13 as examples, the height H from the first light-emitting unit 310 to the prism 410 is known. R The length of the first light-emitting unit 310 is L. R The height of the third light-emitting unit 330 from the prism 410 is H. B The cross-sectional length of the third light-emitting unit 330 is L. B The angle between the light emitted from the rightmost side of the third light-emitting unit 330 and the horizontal direction is θ1, and the angle at which the light emitted from the rightmost side of the first light-emitting unit 310 enters the prism 410 is θ0. A ramp angle θ is formed between the hypotenuse and the base of the prism 410. Lens To ensure that the light output gain of the first sub-pixel PX11 and the third sub-pixel PX13 is the same, the angle at which the rightmost light ray from the third light-emitting unit 330 is incident on the prism 410 must be the same as that of the first light-emitting unit 310, which is θ0. This can be solved using trigonometric functions to find H. B The horizontal distance from the midpoint of the hypotenuse of prism 410 to the bottom edge of prism 410 is ignored during the calculation.

[0075] From the graphical relationship, we can obtain: θ1=θ0-(90°-θ Lens );

[0076] From the trigonometric relationships in mathematics, we can obtain:

[0077] Given H R L R , can be set Therefore, there is Given L B Calculations yielded

[0078] It is understandable that, among all the emitted rays from a light-emitting unit, the rightmost or leftmost emitted ray has the smallest incident angle θ0 on the surface of prism 410. Therefore, by keeping the incident angle θ0 of the rightmost emitted ray from the third light-emitting unit 330 on the surface of prism 410 consistent with the incident angle θ0 of the rightmost emitted ray from the first light-emitting unit 310 on the surface of prism 410, the proportion of total internal reflection of the emitted rays from the first light-emitting unit 310 and the third light-emitting unit 330 on the surface of prism 410 is the same, thus making the light emission gain of the first sub-pixel PX11 and the third sub-pixel PX13 the same. The distance between the second light-emitting unit 320 and the second prism opening 430 can also be calculated using the above formula, and will not be described in detail here.

[0079] In some embodiments of this application, the substrate 100 can be a rigid substrate, such as a glass substrate. The substrate 100 can also be a flexible substrate, such as a polyimide substrate, etc., and this application does not limit it in this regard.

[0080] In some embodiments of this application, the light-emitting unit includes an anode layer, an organic light-emitting layer, and a cathode layer sequentially disposed along the side away from the substrate 100, and the cathode layers of at least some light-emitting units are connected as a single structure. It should be noted that, in the embodiments of this application, the horizontal dimension of the light-emitting unit refers to the horizontal dimension of the light-emitting layer.

[0081] like Figure 4 As shown in Embodiment 1 of this application, the display panel 10 further includes a second protective layer 510, which is located between the light-emitting structure layer 300 and the light-gain structure 400. On the thickness cross-section of the display panel 10, the second protective layer 510 is stepped, comprising a first stepped segment 511, a second stepped segment 512, and a third stepped segment 513. The first stepped segment 511 corresponds to the first light-emitting unit 310, the second stepped segment 512 corresponds to the second light-emitting unit 320, and the third stepped segment 513 corresponds to the third light-emitting unit 330. The distances between the first stepped segment 511 (away from the substrate 100), the second stepped segment 512 (away from the substrate 100), and the third stepped segment 513 (away from the substrate 100) and the substrate 100 are proportional to the size of the corresponding light-emitting unit.

[0082] In this embodiment, the light-emitting structure layer 300 and the light-gain structure 400 are provided with a second protective layer 510. The second protective layer 510 is stepped and includes a first stepped segment 511, a second stepped segment 512, and a third stepped segment 513. The distances between the first stepped segment 511 (away from the substrate 100), the second stepped segment 512 (away from the substrate 100), and the third stepped segment 513 (away from the substrate 100) and the substrate 100 are proportional to the size of the corresponding light-emitting unit. Therefore, when all light-emitting units are at the same height, the heights of the prism openings are different, resulting in different distances between the light-emitting unit and its corresponding prism. The larger the size of the light-emitting unit, the greater the distance between the light-emitting unit and its corresponding prism opening.

[0083] In a specific embodiment, such as Figure 4 As shown, in the thickness section of the display panel 10, the dimensions of the first light-emitting unit 310, the second light-emitting unit 320, and the third light-emitting unit 330 increase sequentially. The distances between the first step segment 511 (away from the substrate 100), the second step segment 512 (away from the substrate 100), and the third step segment 513 (away from the substrate 100) and the substrate 100 increase sequentially. Therefore, when the first light-emitting unit 310, the second light-emitting unit 320, and the third light-emitting unit 330 are at the same height, the distances from the first prism opening 420 to the first light-emitting unit 310, the second prism opening 430 to the second light-emitting unit 320, and the third prism opening 440 to the third light-emitting unit 330 increase sequentially. This is equivalent to increasing the distances from the second prism opening 430 to the second light-emitting unit 320 and the third prism opening 440 to the third light-emitting unit 330 while keeping the distance from the first prism opening 420 to the first light-emitting unit 310 constant. The distance from the opening 440 to the third light-emitting unit 330 is increased so that, while the incident angle of the emitted light from the first light-emitting unit 310 on the surface of the prism 410 remains unchanged, the incident angle of the emitted light from the second light-emitting unit 320 and the emitted light from the third light-emitting unit 330 on the surface of the prism 410 is increased, thereby increasing the proportion of total internal reflection of the second sub-pixel PX12 and the third sub-pixel PX13. As a result, while the light emission gain of the first sub-pixel PX11 remains unchanged, the light emission gain of the second sub-pixel PX12 and the third sub-pixel PX13 is increased.

[0084] Furthermore, the distances between the second step segment 512 (away from the substrate 100) and the substrate 100 and the third step segment 513 (away from the substrate 100) increase sequentially. This means that the distance between the third light-emitting unit 330 and the third prism opening 440 is greater than the distance between the second light-emitting unit 320 and the second prism opening 430. Consequently, the increase in the incident angle of the third light-emitting unit 330 on the surface of the prism 410 is greater than that of the second light-emitting unit 320, and the increase in the light output gain of the third sub-pixel PX13 is greater than that of the second sub-pixel PX12. Thus, the light output gains of the second sub-pixel PX12 and the third sub-pixel PX13 can be made more consistent with the light output gain of the first sub-pixel PX11, which is beneficial to maintaining the white balance of the display panel 10 and improving color deviation.

[0085] In one specific embodiment, the optical gain structure 400 and the second protective layer 510 are disposed in contact. Thus, through the stepped structure of the second protective layer 510, the first prism opening 420, the second prism opening 430 and the third prism opening 440 of the optical gain structure 400 can be distributed in a stepped manner.

[0086] like Figure 4 As shown, in some embodiments of this application, the display panel 10 further includes an encapsulation layer 700, which is located between the light-emitting structure layer 300 and the second protective layer 510. The encapsulation layer 700 covers the light-emitting structure layer 300 and the pixel defining layer 200. The side surface of the encapsulation layer 700 away from the substrate 100 is in contact with the second protective layer 510 and parallel to the substrate 100. In the embodiments of this application, the encapsulation layer 700 is provided to protect each light-emitting unit of the light-emitting structure layer 300. Since the side surface of the encapsulation layer 700 in contact with the second protective layer 510 is parallel to the substrate 100, by providing a stepped second protective layer 510 on the encapsulation layer 700, the first prism opening 420, the second prism opening 430, and the third prism opening 440 located on the second protective layer 510 can have a height difference. Since each light-emitting unit is at the same horizontal position, the distance from each prism 410 opening to the corresponding light-emitting unit is unequal.

[0087] It should be noted that, in the embodiments of this application, the second protective layer 510 and the first protective layer 520 can be made of the same material.

[0088] like Figure 5As shown, in Embodiment Two of the present application, different from Embodiment One, the display panel 10 does not include the stepped second protective layer 510, and the display panel 10 further includes a planarization layer 600, which is located between the substrate 100 and the pixel definition layer 200; on the thickness section of the display panel 10, the planarization layer 600 is arranged in a stepped manner, and the planarization layer 600 includes a fourth stepped section 610, a fifth stepped section 620 and a sixth stepped section 630, the fourth stepped section 610 corresponds to the first light emitting unit 310, the fifth stepped section 620 corresponds to the second light emitting unit 320, and the sixth stepped section 630 corresponds to the third light emitting unit 330; the distance between the side of the fourth stepped section 610, the side of the fifth stepped section 620 and the side of the sixth stepped section 630 away from the substrate 100 and the substrate 100 is inversely proportional to the size of the corresponding light emitting unit.

[0089] In the embodiments of the present application, the planarization layer 600 is arranged between the substrate 100 and the pixel definition layer 200, the planarization layer 600 is arranged in a stepped manner, the planarization layer 600 includes the fourth stepped section 610, the fifth stepped section 620 and the sixth stepped section 630, the distance between the side of the fourth stepped section 610, the side of the fifth stepped section 620 and the side of the sixth stepped section 630 away from the substrate 100 and the substrate 100 is inversely proportional to the size of the corresponding light emitting unit, thereby the heights of the light emitting units are different, so that when the prism openings are located at the same height, the distances between the light emitting units and the corresponding prism openings are different, specifically, the larger the size of the light emitting unit is, the smaller the distance between the light emitting unit and the substrate 100 is, and the larger the distance between the light emitting unit and the prism opening is.

[0090] In a specific embodiment, as Figure 5As shown, on the thickness section of the display panel 10, the sizes of the first light emitting unit 310, the second light emitting unit 320 and the third light emitting unit 330 are sequentially increased, and the distances between the fourth stepped section 610, the fifth stepped section 620 and the sixth stepped section 630 away from the substrate 100 and the substrate 100 are sequentially decreased. Thus, it is equivalent to sequentially increase the distances between the second prism opening 430 and the second light emitting unit 320 and the distances between the third prism opening 440 and the third light emitting unit 330 under the condition that the distance between the first prism opening 420 and the first light emitting unit 310 is unchanged, so as to increase the incident angles of the emergent light rays of the second light emitting unit 320 and the third light emitting unit 330 on the surface of the prism 410 under the condition that the incident angle of the emergent light ray of the first light emitting unit 310 on the surface of the prism 410 is unchanged, improve the proportion of the total reflection light rays of the second sub-pixel PX12 and the third sub-pixel PX13, and further improve the light emission gain of the second sub-pixel PX12 and the third sub-pixel PX13 under the condition that the light emission gain of the first sub-pixel PX11 is unchanged.

[0091] In addition, the distances between the fifth stepped section 620 and the sixth stepped section 630 away from the substrate 100 and the substrate 100 are sequentially decreased, which means that the distance between the third light emitting unit 330 and the third prism opening 440 is greater than the distance between the second light emitting unit 320 and the second prism opening 430, so that the increase degree of the incident angle of the third light emitting unit 330 on the surface of the prism 410 is higher than that of the second light emitting unit 320, the increase degree of the light emission gain of the third sub-pixel PX13 is higher than that of the second sub-pixel PX12, so that the light emission gain of the second sub-pixel PX12 and the third sub-pixel PX13 can be consistent with the light emission gain of the first sub-pixel PX11, and further, it is beneficial to keep the white balance state of the display panel 10 unchanged and improve the color deviation.

[0092] As Figure 6As shown, in Embodiment Three of the present application, the display panel 10 comprises a second protective layer 510 and a planarization layer 600; the second protective layer 510 is located between the light-emitting structure layer 300 and the light gain structure 400; on the thickness section of the display panel 10, the second protective layer 510 is arranged in a stepped shape, the second protective layer 510 comprises a first stepped section 511, a second stepped section 512 and a third stepped section 513, the first stepped section 511 corresponds to the first light-emitting unit 310, the second stepped section 512 corresponds to the second light-emitting unit 320, and the third stepped section 513 corresponds to the third light-emitting unit 330; the distance between the side of the first stepped section 511, the side of the second stepped section 512 and the side of the third stepped section 513 away from the substrate 100 and the substrate 100 is proportional to the size of the corresponding light-emitting unit; the planarization layer 600 is located between the substrate 100 and the pixel definition layer 200; on the thickness section of the display panel 10, the planarization layer 600 is arranged in a stepped shape, the planarization layer 600 comprises a fourth stepped section 610, a fifth stepped section 620 and a sixth stepped section 630, the fourth stepped section 610 corresponds to the first light-emitting unit 310, the fifth stepped section 620 corresponds to the second light-emitting unit 320, and the sixth stepped section 630 corresponds to the third light-emitting unit 330; the distance between the side of the fourth stepped section 610, the side of the fifth stepped section 620 and the side of the sixth stepped section 630 away from the substrate 100 and the substrate 100 is inversely proportional to the size of the corresponding light-emitting unit.

[0093] In the embodiments of the present application, the light-emitting structure layer 300 and the light gain structure 400 are provided with the second protective layer 510, the second protective layer 510 is arranged in a stepped shape, the second protective layer 510 comprises the first stepped section 511, the second stepped section 512 and the third stepped section 513, and the distance between the side of the first stepped section 511, the side of the second stepped section 512 and the side of the third stepped section 513 away from the substrate 100 and the substrate 100 is proportional to the size of the corresponding light-emitting unit. Thus, on the thickness section of the display panel 10, the first prism opening 420, the second prism opening 430 and the third prism opening 440 located on one side of the second protective layer have a height difference, and the distances between the first prism opening 420, the second prism opening 430 and the third prism opening 440 and the substrate 100 are different, specifically, the larger the size of the light-emitting unit, the greater the distance between the corresponding prism opening and the substrate 100.

[0094] Furthermore, a planarization layer 600 is provided between the substrate 100 and the pixel defining layer 200. The planarization layer 600 is stepped and includes a fourth step segment 610, a fifth step segment 620, and a sixth step segment 630. The distances between the fourth step segment 610 (away from the substrate 100), the fifth step segment 620 (away from the substrate 100), and the sixth step segment 630 (away from the substrate 100) and the substrate 100 are inversely proportional to the size of the corresponding light-emitting unit. Therefore, on the thickness cross-section of the display panel 10, there is a height difference between the first light-emitting unit 310, the second light-emitting unit 320, and the third light-emitting unit 330 located on one side of the planarization layer 600. The distances between the first light-emitting unit 310, the second light-emitting unit 320, and the third light-emitting unit 330 and the substrate 100 are different; specifically, the larger the size of the light-emitting unit, the smaller the distance between the light-emitting unit and the substrate 100. Thus, the larger the size of the light-emitting unit, the greater the distance between the light-emitting unit and the corresponding prism opening.

[0095] In a specific embodiment, such as Figure 6 As shown, on the thickness cross section of the display panel 10, the sizes of the first light-emitting unit 310, the second light-emitting unit 320, and the third light-emitting unit 330 increase sequentially. The distances between the first step segment 511, the second step segment 512, and the third step segment 513 and the substrate 100 increase sequentially. The distances between the fourth step segment 610, the fifth step segment 620, and the sixth step segment 630 and the substrate 100 decrease sequentially.

[0096] The above structure causes the distances from the first prism opening 420 to the first light-emitting unit 310, the second prism opening 430 to the second light-emitting unit 320, and the third prism opening 440 to the third light-emitting unit 330 to increase sequentially. This is equivalent to increasing the distances from the second prism opening 430 to the second light-emitting unit 320 and the third prism opening 440 to the third light-emitting unit 330 while keeping the distance from the first prism opening 420 to the first light-emitting unit 310 constant. As a result, while keeping the incident angle of the emitted light from the first light-emitting unit 310 on the surface of the prism 410 constant, the incident angles of the emitted light from the second light-emitting unit 320 and the third light-emitting unit 330 on the surface of the prism 410 increase, thereby increasing the proportion of total internal reflection light in the second sub-pixel PX12 and the third sub-pixel PX13. Consequently, while keeping the light emission gain of the first sub-pixel PX11 constant, the light emission gain of the second sub-pixel PX12 and the third sub-pixel PX13 increases.

[0097] In this embodiment, since the display panel 10 includes both a stepped second protective layer 510 and a stepped planarization layer 600, the height difference between each stepped segment of the second protective layer 510 and the planarization layer 600 can be appropriately reduced, thereby facilitating the processing and manufacturing of the second protective layer 510 and the planarization layer 600.

[0098] In some embodiments of this application, the planarization layer 600 is disposed in contact with the pixel defining layer 200. Thus, by providing a stepped planarization layer 600, the pixel defining layer 200 can also be stepped, thereby placing each light-emitting unit located within the pixel opening at a different height.

[0099] like Figure 6 As shown, in some embodiments of this application, the display panel 10 further includes an encapsulation layer 700. The encapsulation layer 700 is located between the light-emitting structure layer 300 and the second protective layer 510. The encapsulation layer 700 covers the light-emitting structure layer 300 and the pixel defining layer 200. The side surface of the encapsulation layer 700 away from the substrate 100 is in contact with the second protective layer 510 and parallel to the substrate 100. In the embodiments of this application, the encapsulation layer 700 is provided to protect each light-emitting unit of the light-emitting structure layer 300. Since the side surface of the encapsulation layer 700 in contact with the second protective layer 510 is parallel to the substrate 100, by providing a stepped second protective layer 510 on the encapsulation layer 700, a height difference can be made between the first prism opening 420, the second prism opening 430, and the third prism opening 440 provided on the second protective layer 510.

[0100] like Figure 9 As shown, in Embodiment 4 of this application, unlike Embodiment 3, on the thickness cross-section of the display panel 10, the side of the prism 410 near the opening of the prism 410 is an inclined plane, and the angle between the inclined plane and the horizontal direction is the slope angle. The thickness of the prism 410 is equal, and the slope angle θ of the side of the prism 410 near the opening 420 of the first prism is... r The slope angle θ on the side closest to the opening 430 of the second prism g and the slope angle θ on the side near the opening 440 of the third prism b The size is inversely proportional to the size of each of the corresponding light-emitting units.

[0101] like Figure 10 As shown, when the slope angle decreases, the incident angle θ0 of the light on the surface of prism 410 also decreases. This is achieved by adjusting the slope angle θ0 of prism 410 towards the side closest to the opening 420 of the first prism. r The slope angle θ on the side closest to the opening 430 of the second prism g and the slope angle θ on the side near the opening 440 of the third prism bThe size is inversely proportional to the size of each corresponding light emitting unit, so that the slope angle of the side close to the prismatic opening corresponding to the light emitting unit with smaller size is larger, thereby reducing the incident angle of the light rays emitted by the light emitting unit with smaller size on the side surface of the prism 410, suppressing the light emission gain of the sub-pixel, and making the light emission gains of the sub-pixels consistent.

[0102] In a specific embodiment, the sizes of the first light emitting unit 310, the second light emitting unit 320, and the third light emitting unit 330 are sequentially increased, and the slope angles θ r of the side close to the first prismatic opening 420, the slope angles θ g of the side close to the second prismatic opening 430, and the slope angles θ b of the side close to the third prismatic opening 440 of the prism 410 are sequentially decreased, thereby reducing the incident angle of the light rays emitted by the first light emitting unit 310 on the surface of the prism 410 and the incident angle of the light rays emitted by the second light emitting unit 320 on the surface of the prism 410, and thereby, the light emission gains of the first sub-pixel PX11 and the second sub-pixel PX12 are suppressed without changing the light emission gain of the third sub-pixel PX13.

[0103] In addition, it can be understood that, since the slope angles θ r of the side close to the first prismatic opening 420 and the slope angles θ g of the side close to the second prismatic opening 430 of the prism 410 are sequentially decreased, the degree of reduction of the incident angle of the light rays emitted by the first light emitting unit 310 on the surface of the prism 410 is greater than that of the second light emitting unit 320, which means that the suppression of the light emission gain of the first sub-pixel PX11 is higher than that of the second sub-pixel PX12, thereby making the light emission gains of the first sub-pixel PX11, the second sub-pixel PX12, and the third sub-pixel PX13 consistent, and further facilitating the white balance state of the display panel 10 to be unchanged and improving the color cast.

[0104] In some embodiments of the present application, the display panel 10 further comprises a plurality of thin film transistors located between the planarization layer 600 and the substrate 100, and the plurality of thin film transistors and the plurality of light emitting units are one-to-one correspondingly arranged. The thin film transistor comprises an active region, a gate, a source, and a drain, wherein the drain is connected to the anode layer of the light emitting unit through a via hole provided in the planarization layer 600 to control the light emitting unit.

[0105] In some embodiments of the present application, the difference between the size of at least two prism openings and the size of the corresponding light emitting unit is different in the thickness cross section of the display panel 10. This means that the size difference between the other light emitting unit and the corresponding prism opening is increased compared with one of the light emitting units, that is, the size of the prism opening is increased while the size of the light emitting unit remains unchanged. Since the larger the size of the prism opening, the smaller the incident angle of the outgoing light on the surface of the prism 410, the size of the prism opening corresponding to one of the light emitting units is increased to further reduce the incident angle of the outgoing light of the light emitting unit on the surface of the prism 410, reduce the proportion of the outgoing light on the surface of the prism 410, thereby suppressing the light emission gain of the sub-pixel, making the light emission efficiency of each sub-pixel consistent, and further helping to keep the white balance of the display panel 10 unchanged and improve the color cast.

[0106] In some embodiments of the present application, the display panel 10 further comprises a touch layer 800, the touch layer 800 comprises a plurality of touch electrodes 810, the prism 410 covers the touch electrode 810, the projection of the touch electrode 810 on the substrate 100 is between the projections of two adjacent light emitting units on the substrate 100, the touch layer 800 further comprises a first auxiliary electrode 812, the first auxiliary electrode 812 is disposed in the same layer as the touch electrode 810, the projection of the first auxiliary electrode 812 on the substrate 100 at least surrounds and extends into the projection of the prism opening corresponding to one of the light emitting units on the substrate 100, and the first auxiliary electrode 812 is floating. Thus, the first auxiliary electrode 812 can block part of the light emitted by the light emitting unit, thereby reducing the number of light rays incident on the surface of the prism 410 and suppressing the light emission gain of the sub-pixel. Thus, the light emission efficiency of each sub-pixel tends to be consistent, and further helps to keep the white balance of the display panel unchanged and improve the color cast.

[0107] As Figure 11 and Figure 13As shown, the embodiment of the second aspect of the present application proposes a display panel 10, the display panel 10 has a plurality of pixel units arranged in an array, each pixel unit includes a first sub-pixel PX11, a second sub-pixel PX12 and a third sub-pixel PX13, the display panel 10 includes a substrate 100, a pixel defining layer 200, a light emitting structure layer 300 and a light gain structure 400. The pixel defining layer 200 is located on one side of the substrate 100, the pixel defining layer 200 includes a plurality of pixel openings, the pixel openings correspond to the sub-pixels one by one. The light emitting structure layer 300 includes a first light emitting unit 310, a second light emitting unit 320 and a third light emitting unit 330, the first light emitting unit 310, the second light emitting unit 320 and the third light emitting unit 330 are respectively located in the pixel openings, the first light emitting unit 310 corresponds to the first sub-pixel PX11, the second light emitting unit 320 corresponds to the second sub-pixel PX12, and the third light emitting unit 330 corresponds to the third sub-pixel PX13; the light gain structure 400 is located on the side of the light emitting structure layer 300 away from the substrate 100, the light gain structure 400 includes a plurality of prisms 410 and first prism openings 420, second prism openings 430 and third prism openings 440 formed between each prism 410, the first prism openings 420 correspond to the first light emitting unit 310, the second prism openings 430 correspond to the second light emitting unit 320, and the third prism openings 440 correspond to the third light emitting unit 330; on the thickness section of the display panel 10, the difference between the size of at least two prism openings and the corresponding light emitting unit is different; a protective layer covers the light gain structure, the refractive index of the protective layer is different from that of the light gain structure.

[0108] In the embodiment of the present application, the light-emitting structure layer 300 includes a first light-emitting unit 310, a second light-emitting unit 320, and a third light-emitting unit 330, and the display panel 10 further includes a light gain structure 400 and a first protective layer 520, the refractive indexes of the light gain structure 400 and the first protective layer 520 are different, so that the emergent light rays of the light-emitting units can be totally reflected on the surface of the light gain structure 400. On the thickness section of the display panel 10, the size difference between at least two prism openings and the corresponding light-emitting units is different. In the related art, the size of the prism opening corresponds to the size of the light-emitting unit, that is, the size difference between the prism opening and the light-emitting unit is zero, while in the present application, the size difference between at least two prism openings and the corresponding light-emitting units is different. This means that, compared with one light-emitting unit, the size difference between another light-emitting unit and the corresponding prism opening is increased, that is, the size of the prism opening is increased while the size of the light-emitting unit remains unchanged. Since the larger the size of the prism opening is, the smaller the incident angle of the emergent light rays on the surface of the prism 410 is, by increasing the size of the prism opening corresponding to one light-emitting unit, the incident angle of the emergent light rays of the light-emitting unit on the surface of the prism 410 can be reduced, the proportion of the emergent light rays being totally reflected on the surface of the prism 410 is reduced, thereby inhibiting the light gain of the sub-pixel, making the light emission efficiency of each sub-pixel consistent, and further facilitating the white balance state of the display panel 10 to remain unchanged and improving the color cast.

[0109] It can be understood that, in the embodiment of the present application, the size of each prism opening is greater than or equal to the size of the corresponding light-emitting unit.

[0110] In the embodiment of the present application, the prism 410 is made of a low-refractive organic material, and the protective layer 500 is made of a high-refractive organic material. In a specific embodiment, the refractive index of the prism 410 is 1.51, and the refractive index of the protective layer 500 is 1.72.

[0111] In an embodiment of the present application, on the thickness section of the display panel 10, the size difference between each prism opening and the corresponding light-emitting unit is inversely proportional to the size of each light-emitting unit. That is, the larger the size of the light-emitting unit is, the larger the size difference between the corresponding prism opening and the light-emitting unit is, thereby improving the inhibition degree of the light gain of the light-emitting unit with a smaller size.

[0112] In a specific embodiment, as shown in FIG. 4, the display panel 10 includes a first light-emitting unit 310, a second light-emitting unit 320, and a third light-emitting unit 330, and the display panel 10 further includes a light gain structure 400 and a first protective layer 520. Figure 11As shown, in the cross-section of the display panel 10, the sizes of the first light-emitting unit 310, the second light-emitting unit 320, and the third light-emitting unit 330 increase sequentially. The size of the first prism opening 420 is larger than the horizontal size of the first light-emitting unit 310, the size of the second prism opening 430 is larger than the horizontal size of the second light-emitting unit 320, and the size of the third prism opening 440 is equal to the horizontal size of the third light-emitting unit 330. Furthermore, the size difference between the first prism opening 420 and the first light-emitting unit 310 is greater than the size difference between the second prism opening 430 and the second light-emitting unit 320. Therefore, it is equivalent to increasing the sizes of the first prism opening 420 and the second prism opening 430 while keeping the size of the third prism opening 440 constant. Since a larger prism opening size results in a smaller incident angle of the emitted light on the surface of prism 410, by increasing the size of the first prism opening 420 and the second prism opening 430, the incident angle of the emitted light from the first light-emitting unit 310 and the second light-emitting unit 320 on the surface of prism 410 can be reduced, thereby reducing the proportion of total internal reflection of the emitted light on the surface of prism 410. This suppresses the light emission gain of the first sub-pixel PX11 and the second sub-pixel PX12, making the light emission gain of the first sub-pixel PX11, the second sub-pixel PX12 and the light emission efficiency of the third sub-pixel PX13 more consistent. This, in turn, helps to maintain the white balance state of the display panel 10 and improve color deviation.

[0113] Specifically, such as Figure 12 As shown, taking the second sub-pixel PX12 as an example, when the prism 410 moves away from the center line of the second light-emitting unit 320, the opening 430 of the second prism expands, thereby reducing the incident angle of light on the surface of the prism 410, reducing the proportion of total internal reflection of light on the surface of the prism 410, and reducing the light output gain of the second sub-pixel PX12.

[0114] like Figure 11 As shown, in some embodiments of this application, on the thickness cross section of the display panel 10, the dimensions of the first prism opening 420, the second prism opening 430, and the third prism opening 440 are inversely proportional to the dimensions of the corresponding light-emitting units.

[0115] In a specific embodiment, on the thickness cross section of the display panel 10, the sizes of the first light-emitting unit 310, the second light-emitting unit 320, and the third light-emitting unit 330 increase sequentially. Since the sizes of the first prism opening 420, the second prism opening 430, and the third prism opening 440 are inversely proportional to the sizes of the corresponding light-emitting units, the first prism opening 420 has the largest size, and the third prism opening 440 has the smallest size. Since the larger the opening of the prism 410, the smaller the incident angle of light on the surface of the prism 410, the light emission gain of the first sub-pixel PX11 and the second sub-pixel PX12 is suppressed relative to the third sub-pixel PX13. Moreover, the degree of suppression of the light emission gain of the first sub-pixel PX11 is higher than that of the second sub-pixel PX12. This makes the light emission gain of the first sub-pixel PX11 and the second sub-pixel PX12 more consistent with that of the third sub-pixel PX13, which is beneficial to keeping the white balance of the display panel 10 unchanged and improving color deviation.

[0116] In some embodiments of this application, the substrate 100 can be a rigid substrate, such as a glass substrate. The substrate 100 can also be a flexible substrate, such as a polyimide substrate, etc., and this application does not limit it in this regard.

[0117] In some embodiments of this application, the light-emitting unit includes an anode layer, an organic light-emitting layer, and a cathode layer sequentially disposed along the side away from the substrate 100, and the cathode layers of at least some light-emitting units are connected as a single structure. It should be noted that, in the embodiments of this application, the horizontal dimension of the light-emitting unit refers to the horizontal dimension of the light-emitting layer.

[0118] like Figure 13 As shown, in the cross-section of the display panel 10, the side of the prism 410 near the opening of the prism 410 is an inclined plane, and the angle between the inclined plane and the horizontal direction is the slope angle. The thickness of the prism 410 is equal, and the slope angle θ of the side of the prism 410 near the opening 420 of the first prism is... r The slope angle θ on the side closest to the opening 430 of the second prism g and the slope angle θ on the side near the opening 440 of the third prism b The size is inversely proportional to the size of each of the corresponding light-emitting units.

[0119] like Figure 10 As shown, when the slope angle decreases, the incident angle θ0 of the light on the surface of prism 410 also decreases. This is achieved by adjusting the slope angle θ0 of prism 410 towards the side closest to the opening 420 of the first prism. r The slope angle θ on the side closest to the opening 430 of the second prism g and the slope angle θ on the side near the opening 440 of the third prism bThe size is inversely proportional to the size of each of the corresponding light-emitting units, which can make the slope angle of the prism opening side corresponding to the smaller light-emitting unit larger, thereby reducing the incident angle of the emitted light from the smaller light-emitting unit on the side of the prism 410, suppressing the light output gain of the sub-pixel, and making the light output gain of each sub-pixel tend to be consistent.

[0120] In one specific embodiment, the sizes of the first light-emitting unit 310, the second light-emitting unit 320, and the third light-emitting unit 330 increase sequentially, and the slope angle θ of the prism 410 on the side near the opening 420 of the first prism is... r The slope angle θ on the side closest to the opening 430 of the second prism g and the slope angle θ on the side near the opening 440 of the third prism b By decreasing sequentially, the incident angles of the emitted light from the first light-emitting unit 310 to the surface of the prism 410 and the incident angles of the emitted light from the second light-emitting unit 320 to the surface of the prism 410 can be reduced. This is equivalent to suppressing the light-emitting gain of the first sub-pixel PX11 and the second sub-pixel PX12 while keeping the light-emitting gain of the third sub-pixel PX13 unchanged.

[0121] Additionally, it is understandable that the slope angle θ of prism 410 on the side closest to the opening 420 of the first prism is... r and the slope angle θ on the side closest to the opening 430 of the second prism g As the light emission angle decreases sequentially, the angle of incidence of the light emitted from the first light-emitting unit 310 to the surface of the prism 410 decreases more than that of the second light-emitting unit 320. This means that the suppression of the light emission gain of the first sub-pixel PX11 is higher than that of the second sub-pixel PX12. As a result, the light emission gains of the first sub-pixel PX11, the second sub-pixel PX12, and the third sub-pixel PX13 can become more consistent, which is beneficial to maintaining the white balance of the display panel 10 and improving color deviation.

[0122] like Figure 11 As shown, in some embodiments of this application, the display panel 10 further includes an encapsulation layer 700, which is located between the light-emitting structure layer 300 and the light-gain structure 400, and covers the light-emitting structure layer 300 and the pixel defining layer 200. In the embodiments of this application, the encapsulation layer 700 is provided to protect each light-emitting unit of the light-emitting structure layer 300.

[0123] In some embodiments of this application, the display panel 10 further includes a plurality of thin-film transistors (TFTs) located between the planarization layer 600 and the substrate 100. Each TFT corresponds to a plurality of light-emitting units. Each TFT includes an active region, a gate, a source, and a drain. The drain is connected to the anode layer of the light-emitting unit via a via disposed in the planarization layer 600 to control the light-emitting unit.

[0124] In some embodiments of the present application, the distance from at least two light emitting units to the corresponding prism opening in the thickness direction of the display panel 10 is different. This means that the incident height difference of the outgoing light rays of one light emitting unit to the surface of the prism 410 is increased compared with the other light emitting unit, thereby increasing the incident angle of the outgoing light rays of the light emitting unit on the surface of the prism 410, improving the proportion of total reflection of the outgoing light rays of the light emitting unit on the surface of the prism 410, improving the light output gain of the sub-pixel, making the light output efficiency of each sub-pixel consistent, and further helping to keep the white balance of the display panel 10 unchanged and improve the color cast.

[0125] In some embodiments of the present application, the display panel 10 further includes a touch layer 800, the touch layer 800 includes a plurality of touch electrodes 810, the prism 410 covers the touch electrode 810, the projection of the touch electrode 810 on the substrate 100 is located between the projections of the adjacent two light emitting units on the substrate 100, the touch layer 800 further includes a first auxiliary electrode 812, the first auxiliary electrode 812 is disposed in the same layer as the touch electrode 810, the projection of the first auxiliary electrode 812 on the substrate 100 at least surrounds and extends into the projection of the prism opening corresponding to one light emitting unit on the substrate 100, and the first auxiliary electrode 812 is floating. Thus, the first auxiliary electrode 812 can block part of the light emitted by the light emitting unit, thereby reducing the number of light rays incident on the surface of the prism 410 and suppressing the light output gain of the sub-pixel. Thus, the light output efficiency of each sub-pixel is consistent, and further helps to keep the white balance of the display panel unchanged and improve the color cast.

[0126] As shown in Figure 14 The embodiments of the third aspect of the present application provide a display panel 10, the display panel 10 has a plurality of pixel units arranged in an array, each pixel unit includes a first sub-pixel PX11, a second sub-pixel PX12 and a third sub-pixel PX13. The display panel 10 includes a substrate 100, a pixel defining layer 200, a light emitting structure layer 300, a light gain structure 400 and a touch layer 800. The pixel defining layer 200 is located on one side of the substrate 100, and the pixel defining layer 200 includes a plurality of pixel openings, each pixel opening corresponds to a sub-pixel. The light emitting structure layer 300 includes a first light emitting unit 310, a second light emitting unit 320 and a third light emitting unit 330, the first light emitting unit 310, the second light emitting unit 320 and the third light emitting unit 330 are respectively located in the pixel opening, the first light emitting unit 310 corresponds to the first sub-pixel PX11, the second light emitting unit 320 corresponds to the second sub-pixel PX12, and the third light emitting unit 330 corresponds to the third sub-pixel PX13.

[0127] The light gain structure 400 is located on the side of the light emitting structure layer 300 away from the substrate 100, and includes a plurality of prisms 410 and first, second and third prism openings 420, 430 and 440 formed between the prisms 410, the first prism openings 420 corresponding to the first light emitting units 310, the second prism openings 430 corresponding to the second light emitting units 320, and the third prism openings 440 corresponding to the third light emitting units 330. The touch layer 800 is located between the light emitting structure layer 300 and the light gain structure 400, and includes a plurality of touch electrodes 810, the prisms 410 covering the touch electrodes 810, the touch electrodes 810 being projected on the substrate 100 between the projections of two adjacent light emitting units on the substrate 100, and the touch layer 800 further including a first auxiliary electrode 812, the first auxiliary electrode 812 being disposed in the same layer as the touch electrodes 810, the projection of the first auxiliary electrode 812 on the substrate 100 at least surrounding and covering a part of the projection of the prism opening corresponding to one light emitting unit on the substrate 100, and the first auxiliary electrode 812 being floating.

[0128] In the embodiments of the present application, the display panel 10 includes the touch layer 800, the touch layer 800 being located between the light emitting structure layer 300 and the light gain structure 400, the touch layer 800 including the touch electrodes 810, and the touch layer 800 further including the first auxiliary electrode 812, the first auxiliary electrode 812 at least surrounding and covering a part of the projection of the prism opening corresponding to one light emitting unit on the substrate 100, so that the first auxiliary electrode 812 can block part of the light emitted by the light emitting unit, thereby reducing the number of light rays entering the surface of the prism 410 and inhibiting the light gain of the sub-pixel. Thus, the light emitting efficiency of each sub-pixel tends to be consistent, which is conducive to keeping the white balance of the display panel unchanged and improving the color cast.

[0129] In some embodiments of the present application, as Figure 14As shown in FIG. 8, in the thickness section of the display panel 10, the projection of the first auxiliary electrode 812 surrounds and covers a part of the projection of the prismatic opening on the substrate 100 corresponding to the light emitting unit with the smallest size among the three light emitting units, and the touch layer 800 further comprises a second auxiliary electrode 813, the projection of the second auxiliary electrode 813 surrounds and covers the projection of the prismatic opening on the substrate 100 corresponding to the light emitting unit with the smaller size among the remaining two light emitting units, the area covered by the projection of the first auxiliary electrode 812 on the projection of the corresponding prismatic opening is greater than the area covered by the projection of the second auxiliary electrode 813 on the projection of the corresponding prismatic opening, and the second auxiliary electrode 813 is floating. Thus, the light emitting gain of the two light emitting units with smaller size can be suppressed by the first auxiliary electrode 812 and the second auxiliary electrode 813, and among the two light emitting units, the suppression degree of the light emitting unit with the smallest size is higher than that of the light emitting unit with the larger size, so that the light emitting gain of each sub-pixel can be made consistent.

[0130] In a specific embodiment, as shown in FIG. 3, Figure 14 As shown in FIG. 8, in the thickness section of the display panel 10, the projection of the first auxiliary electrode 812 surrounds and covers a part of the projection of the prismatic opening on the substrate 100 corresponding to the light emitting unit with the smallest size among the three light emitting units, and the touch layer 800 further comprises a second auxiliary electrode 813, the projection of the second auxiliary electrode 813 surrounds and covers the projection of the prismatic opening on the substrate 100 corresponding to the light emitting unit with the smaller size among the remaining two light emitting units, the area covered by the projection of the first auxiliary electrode 812 on the projection of the corresponding prismatic opening is greater than the area covered by the projection of the second auxiliary electrode 813 on the projection of the corresponding prismatic opening, and the second auxiliary electrode 813 is floating. Thus, the light emitting gain of the two light emitting units with smaller size can be suppressed by the first auxiliary electrode 812 and the second auxiliary electrode 813, and among the two light emitting units, the suppression degree of the light emitting unit with the smallest size is higher than that of the light emitting unit with the larger size, so that the light emitting gain of each sub-pixel can be made consistent. Figure 15 Figure 16 As shown in FIG. 8, the first auxiliary electrode 812 can block part of the light emitted by the first light emitting unit 310, thereby reducing the number of light rays incident on the surface of the prism 410 and suppressing the light emitting gain of the first sub-pixel PX11. The second auxiliary electrode 813 can block part of the light emitted by the second light emitting unit 320, thereby reducing the number of light rays incident on the surface of the prism 410 and suppressing the light emitting gain of the second sub-pixel PX12.

[0131] Further, in the thickness section of the display panel 10, the length of the first auxiliary electrode 812 extending into the first prismatic opening 420 is greater than the length of the second auxiliary electrode 813 extending into the second prismatic opening 430. Thus, compared with the second auxiliary electrode 813, the first auxiliary electrode 812 can block more light, thereby the suppression degree of the light emitting gain of the first sub-pixel PX11 is higher than that of the second sub-pixel PX12, and thus the light emitting gain of the first sub-pixel PX11 and the second sub-pixel PX12 can be consistent with that of the third sub-pixel PX13, which is conducive to keeping the white balance state of the display panel 10 unchanged and improving the color cast.

[0132] In some embodiments of the present application, as shown in FIG. 3, Figure 17 Figure 18 ​​As shown, the touch layer 800 also includes a touch insulating layer 820; the touch electrode 810 includes a touch pattern electrode 830 and a bridging electrode 811, the touch pattern electrode 830 includes a touch transmitting electrode 831 and a touch receiving electrode 832; the bridging electrode 811 is located on the side of the touch insulating layer 820 away from the substrate 100, and the touch pattern electrode 830 is located on the side of the touch insulating layer 820 close to the substrate 100; the first auxiliary electrode 812, the second auxiliary electrode 813, and the bridging electrode 811 are disposed in the same layer. This facilitates the placement of the first auxiliary electrode 812 and the second auxiliary electrode 813.

[0133] In a specific embodiment, such as Figure 17 As shown, the touch transmitting electrode 831 and the touch receiving electrode 832 are located in the display area AA. The touch transmitting electrode 831 and the touch receiving electrode 832 are metal mesh structures. Multiple touch transmitting electrodes 831 are directly connected, and multiple touch receiving electrodes 832 are connected through bridging electrodes 811. In the frame area AB, touch signal transmitting line 833 and touch signal receiving line 834 are also provided. The touch signal transmitting line 833 is connected to the touch transmitting electrode 831, and the touch signal receiving line 834 is connected to the touch receiving electrode 832. The touch function can be implemented using the mutual capacitance touch principle. Specifically, when a user touches the touch layer 800, the capacitance between the touch transmitting electrode 831 and the touch receiving electrode 832 at the touch position will change. The main control board IC of the display panel 10 transmits the transmission signal to the touch transmitting electrode 831 through the touch signal transmitting line 833, and receives the signal from the touch receiving electrode 832 through the touch signal receiving line 834, thereby obtaining the capacitance value of the intersection point of the touch transmitting electrode 831 and the touch receiving electrode 832, that is, the capacitance value of the entire two-dimensional plane of the display panel 10. Based on the change in capacitance value, the coordinates of the touch point are calculated, thereby realizing the touch function.

[0134] It should be noted that the first auxiliary electrode 812 and the second auxiliary electrode 813 are floating, that is, the first auxiliary electrode 812 and the second auxiliary electrode 813 are not connected to the touch transmitting electrode 831 and the touch receiving electrode 832. The first auxiliary electrode 812 and the second auxiliary electrode 813 are only used to block light.

[0135] In other embodiments of this application, with Figure 18 The difference in the illustrated embodiment is that the first auxiliary electrode 812, the second auxiliary electrode 813, and the touch pattern electrode 830 are arranged in the same layer.

[0136] In Embodiment 2 of this application, as Figure 19As shown, the touch pattern electrode 830 is located on the side of the touch insulating layer 820 away from the substrate 100, the bridge electrode 811 is located on the side of the touch insulating layer 820 close to the substrate 100, and the first auxiliary electrode 812, the second auxiliary electrode 813 and the touch pattern electrode 830 are arranged in the same layer. Thus, the arrangement of the first auxiliary electrode 812 is facilitated.

[0137] In the third embodiment of the present application, as shown in Figure 20 different from the embodiment shown in Figure 19 , the first auxiliary electrode 812, the second auxiliary electrode 813 and the bridge electrode 811 are arranged in the same layer. Thus, the arrangement of the first auxiliary electrode 812 is facilitated.

[0138] In the fourth embodiment of the present application, as shown in Figure 21 different from the embodiment shown in Figure 19 , a part of the first auxiliary electrode 812 and a part of the second auxiliary electrode 813 are arranged in the same layer as the bridge electrode 811, and another part of the first auxiliary electrode 812 and another part of the second auxiliary electrode 813 are arranged in the same layer as the touch pattern electrode 830. Thus, the first auxiliary electrode 812 and the second auxiliary electrode 813 have stronger blocking effect on light.

[0139] In some embodiments of the present application, the touch layer 800 can be directly formed on the display panel 10 by using Flexible Multilayer On Cell (FMLOC) technology.

[0140] As shown in Figure 22 different from the embodiment shown in Figure 14 , on the thickness section of the display panel 10, the side of the prism 410 close to the opening of the prism 410 is a slope, the included angle between the slope and the horizontal direction is the slope angle, the thickness of the prism 410 is equal, the slope angle θ r of the side of the prism 410 close to the first prism opening 420, the slope angle θ g of the side of the prism 410 close to the second prism opening 430 and the slope angle θ b of the side of the prism 410 close to the third prism opening 440 are inversely proportional to the size of the corresponding light emitting unit.

[0141] As shown in Figure 10 , when the slope angle decreases, the incident angle θ0 of the light on the surface of the prism 410 also decreases. By decreasing the slope angle θ r of the side of the prism 410 close to the first prism opening 420, the slope angle θ g of the side of the prism 410 close to the second prism opening 430 and the slope angle θ bThe size is inversely proportional to the size of each corresponding light emitting unit. The slope angle on the side close to the smaller light emitting unit corresponding to the prism opening can be larger, thereby reducing the incident angle of the light rays of the smaller light emitting unit on the side of the prism 410, inhibiting the light emission gain of the sub-pixel, and making the light emission gains of the sub-pixels consistent.

[0142] In a specific embodiment, the sizes of the first light emitting unit 310, the second light emitting unit 320, and the third light emitting unit 330 are sequentially increased, and the slope angles θ r on the side close to the first prism opening 420 of the prism 410, the slope angles θ g on the side close to the second prism opening 430 of the prism 410, and the slope angles θ b on the side close to the third prism opening 440 of the prism 410 are sequentially decreased, which can reduce the incident angle of the light rays of the first light emitting unit 310 on the surface of the prism 410 and the incident angle of the light rays of the second light emitting unit 320 on the surface of the prism 410, thereby, equivalent to inhibiting the light emission gain of the first sub-pixel PX11 and the second sub-pixel PX12 while the light emission gain of the third sub-pixel PX13 remains unchanged.

[0143] In addition, it can be understood that, since the slope angles θ r on the side close to the first prism opening 420 of the prism 410 and the slope angles θ g on the side close to the second prism opening 430 of the prism 410 are sequentially decreased, the degree of reduction of the incident angle of the light rays of the first light emitting unit 310 on the surface of the prism 410 is greater than that of the second light emitting unit 320, which means that the degree of inhibition of the light emission gain of the first sub-pixel PX11 is higher than that of the second sub-pixel PX12, thereby, the light emission gains of the first sub-pixel PX11, the second sub-pixel PX12, and the third sub-pixel PX13 can be consistent, which is conducive to keeping the white balance of the display panel 10 unchanged and improving the color cast.

[0144] In some embodiments of the present application, the distance from at least two light emitting units to the corresponding prism opening in the thickness direction of the display panel 10 is different. This means that the incident height difference of the light rays of one light emitting unit on the surface of the prism 410 is greater than that of the other light emitting unit, thereby, the incident angle of the light rays of the light emitting unit on the surface of the prism 410 can be increased, the proportion of the light rays of the light emitting unit being totally reflected on the surface of the prism 410 is increased, the light emission gain of the sub-pixel is increased, the light emission benefits of the sub-pixels are consistent, which is conducive to keeping the white balance of the display panel 10 unchanged and improving the color cast.

[0145] In some embodiments of this application, at least two prism openings on the thickness section of the display panel 10 have different differences in size between their corresponding light-emitting units and the prism openings. This means that, compared to one light-emitting unit, the difference in size between the other light-emitting unit and its corresponding prism opening is larger. In other words, with the size of the light-emitting unit remaining unchanged, the prism opening size is increased. Since a larger prism opening size results in a smaller incident angle of the emitted light on the prism surface, by increasing the prism opening size corresponding to one of the light-emitting units, the incident angle of the emitted light on the prism 410 surface can be reduced, lowering the proportion of total internal reflection of the emitted light on the prism 410 surface. This suppresses the light-emitting gain of the sub-pixel, making the light-emitting efficiency of each sub-pixel more consistent, which in turn helps to maintain the white balance of the display panel 10 and improve color deviation.

[0146] like Figure 14 As shown, in some embodiments of this application, the display panel 10 further includes an encapsulation layer 700, which is located between the light-emitting structure layer 300 and the touch layer 800, and covers the light-emitting structure layer 300 and the pixel defining layer 200. In the embodiments of this application, the encapsulation layer 700 is provided to protect each light-emitting unit of the light-emitting structure layer 300.

[0147] In some embodiments of this application, the display panel 10 further includes a plurality of thin-film transistors (TFTs) located between the planarization layer 600 and the substrate 100. Each TFT corresponds to a plurality of light-emitting units. Each TFT includes an active region, a gate, a source, and a drain. The drain is connected to the anode layer of the light-emitting unit via a via disposed in the planarization layer 600 to control the light-emitting unit.

[0148] An embodiment of the fourth aspect of this application provides a display device including a display panel 10 of the first, second, or third aspect.

[0149] The display device according to the embodiments of this application, since it has a display panel 10 of the first aspect, the second aspect, or the third aspect, also has the beneficial effects of any embodiment of the first aspect, the second aspect, or the third aspect, which will not be elaborated here.

[0150] It is to be noted that, as used in this document, the terminology "first", "second", etc. is merely used to differentiate one entity or action from another, and does not necessarily imply or require any actual relationship or order between or among the entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0151] Each of the embodiments in the present specification is described in a related manner, and the same or similar parts among the embodiments can be referred to each other. Each of the embodiments focuses on the difference from other embodiments. In particular, for the system embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the part of the description of the method embodiments.

[0152] The preferred embodiments of the present application are described above in detail. The above description is only for the preferred embodiments of the present application, and is not intended to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A display panel, characterized by, The display panel comprises: a substrate; a pixel definition layer located on one side of the substrate, the pixel definition layer comprising a plurality of pixel openings corresponding to the sub-pixels one by one; a light-emitting structure layer comprising a first light-emitting unit, a second light-emitting unit and a third light-emitting unit, the first light-emitting unit, the second light-emitting unit and the third light-emitting unit being located in the pixel openings respectively, the first light-emitting unit corresponding to the first sub-pixel, the second light-emitting unit corresponding to the second sub-pixel, and the third light-emitting unit corresponding to the third sub-pixel; a light gain structure located on a side of the light-emitting structure layer away from the substrate, comprising a plurality of prisms and first prism openings, second prism openings and third prism openings formed between each of the prisms, the first prism openings corresponding to the first light-emitting units, the second prism openings corresponding to the second light-emitting units, and the third prism openings corresponding to the third light-emitting units; in the thickness direction of the display panel, the distances from the at least two light-emitting units to the corresponding prism openings are different; a first protective layer covering the light gain structure, the refractive index of the first protective layer being different from that of the light gain structure.

2. The display panel of claim 1, wherein, In the thickness cross section of the display panel, the size of each light-emitting unit is proportional to the distance from the light-emitting unit to the corresponding prism opening.

3. The display panel of claim 2, wherein, Further comprising a second protective layer located between the light-emitting structure layer and the light gain structure; in the thickness cross section of the display panel, the second protective layer is arranged in a stepped manner, the second protective layer comprising a first stepped section, a second stepped section and a third stepped section, the first stepped section corresponding to the first light-emitting units, the second stepped section corresponding to the second light-emitting units, and the third stepped section corresponding to the third light-emitting units; the distance between the side of the first stepped section away from the substrate, the side of the second stepped section away from the substrate, the side of the third stepped section away from the substrate and the substrate is proportional to the size of the corresponding light-emitting unit.

4. The display panel of claim 2, wherein, Further comprising a planarization layer located between the substrate and the pixel definition layer; in the thickness cross section of the display panel, the planarization layer is arranged in a stepped manner, the planarization layer comprising a fourth stepped section, a fifth stepped section and a sixth stepped section, the fourth stepped section corresponding to the first light-emitting units, the fifth stepped section corresponding to the second light-emitting units, and the sixth stepped section corresponding to the third light-emitting units; the distance between the side of the fourth stepped section away from the substrate, the side of the fifth stepped section away from the substrate, the side of the sixth stepped section away from the substrate and the substrate is inversely proportional to the size of the corresponding light-emitting unit.

5. The display panel of claim 2, wherein, Further comprising a second protective layer and a planarization layer; The second protective layer is located between the light-emitting structure layer and the light gain structure; in a thickness section of the display panel, the second protective layer is arranged in a stepped shape, the second protective layer comprises a first stepped section, a second stepped section and a third stepped section, the first stepped section corresponds to the first light-emitting unit, the second stepped section corresponds to the second light-emitting unit, and the third stepped section corresponds to the third light-emitting unit; The distance between the side of the first stepped section, the side of the second stepped section and the side of the third stepped section away from the substrate and the substrate and the size of the corresponding light-emitting unit are directly proportional; The planarization layer is located between the substrate and the pixel defining layer; in a thickness section of the display panel, the planarization layer is arranged in a stepped shape, the planarization layer comprises a fourth stepped section, a fifth stepped section and a sixth stepped section, the fourth stepped section corresponds to the first light-emitting unit, the fifth stepped section corresponds to the second light-emitting unit, and the sixth stepped section corresponds to the third light-emitting unit; The distance between the side of the fourth stepped section, the side of the fifth stepped section and the side of the sixth stepped section away from the substrate and the substrate and the size of the corresponding light-emitting unit are inversely proportional.

6. The display panel of claim 1, wherein, In a thickness section of the display panel, the side of the prism close to the prism opening is an inclined surface, the included angle between the inclined surface and the horizontal direction is the slope angle, the thickness of the prism is equal, and the slope angles of the side of the prism close to the first prism opening, the side of the prism close to the second prism opening and the side of the prism close to the third prism opening are inversely proportional to the sizes of the corresponding light-emitting units.

7. The display panel of claim 1, wherein, In a thickness section of the display panel, the size difference between at least two prism openings and the corresponding light-emitting units is different.

8. The display panel of claim 1, wherein, The display panel further comprises a touch layer, the touch layer comprises a plurality of touch electrodes, the prism covers the touch electrode, the projection of the touch electrode on the substrate is between the projections of two adjacent light-emitting units on the substrate, the touch layer further comprises a first auxiliary electrode, the first auxiliary electrode is arranged in the same layer as the touch electrode, the projection of the first auxiliary electrode on the substrate at least surrounds and covers a part of the projection of the prism opening corresponding to one light-emitting unit on the substrate, and the first auxiliary electrode is floating.

9. A display panel, characterized by, A plurality of pixel units arranged in an array, each pixel unit comprising a first sub-pixel, a second sub-pixel and a third sub-pixel, the display panel comprising: a substrate; a pixel defining layer located on one side of the substrate, the pixel defining layer comprising a plurality of pixel openings, the pixel openings corresponding one-to-one to the sub-pixels; a light-emitting structure layer comprising a first light-emitting unit, a second light-emitting unit and a third light-emitting unit, the first light-emitting unit, the second light-emitting unit and the third light-emitting unit being located in the pixel openings respectively, the first light-emitting unit corresponding to the first sub-pixel, the second light-emitting unit corresponding to the second sub-pixel, and the third light-emitting unit corresponding to the third sub-pixel; The light gain structure is located on the side of the light emitting structure layer away from the substrate, and includes a plurality of prisms and first prism openings, second prism openings and third prism openings formed between each of the prisms, the first prism openings correspond to the first light emitting units, the second prism openings correspond to the second light emitting units, and the third prism openings correspond to the third light emitting units; on the thickness section of the display panel, the size difference between at least two prism openings and the corresponding light emitting units is different; on the thickness section of the display panel, the side of the prism close to the prism opening is an inclined surface, the included angle between the inclined surface and the horizontal direction is the slope angle, the thickness of the prism is equal, and the slope angles of the side of the prism close to the first prism opening, the side of the prism close to the second prism opening and the side of the prism close to the third prism opening are inversely proportional to the size of the corresponding light emitting unit; A protective layer covers the light gain structure, and the refractive index of the protective layer is different from that of the light gain structure.

10. The display panel of claim 9, wherein, On the thickness section of the display panel, the size difference between each prism opening and the corresponding light emitting unit is inversely proportional to the size of each light emitting unit.

11. The display panel of claim 9, wherein, In the thickness direction of the display panel, the distances from at least two light emitting units to the corresponding prism openings are different.

12. The display panel of claim 9, wherein, The display panel further includes a touch layer, the touch layer includes a plurality of touch electrodes, the prism covers the touch electrode, the projection of the touch electrode on the substrate is located between the projections of two adjacent light emitting units on the substrate, the touch layer further includes a first auxiliary electrode, the first auxiliary electrode is disposed in the same layer as the touch electrode, the projection of the first auxiliary electrode on the substrate at least surrounds and covers a part of the projection of the prism opening corresponding to one light emitting unit on the substrate, and the first auxiliary electrode is floating.

13. A display panel, characterized by A plurality of pixel units arranged in an array, each pixel unit including a first sub-pixel, a second sub-pixel and a third sub-pixel, the display panel including: a substrate; a pixel defining layer located on one side of the substrate, the pixel defining layer including a plurality of pixel openings, the pixel openings corresponding one-to-one to the sub-pixels; a light emitting structure layer including a first light emitting unit, a second light emitting unit and a third light emitting unit, the first light emitting unit, the second light emitting unit and the third light emitting unit being located in the pixel openings respectively, the first light emitting unit corresponding to the first sub-pixel, the second light emitting unit corresponding to the second sub-pixel, and the third light emitting unit corresponding to the third sub-pixel; a light gain structure located on the side of the light emitting structure layer away from the substrate, including a plurality of prisms and first prism openings, second prism openings and third prism openings formed between each of the prisms, the first prism openings corresponding to the first light emitting units, the second prism openings corresponding to the second light emitting units, and the third prism openings corresponding to the third light emitting units; A touch control layer is located between the light emitting structure layer and the light gain structure, and includes a plurality of touch electrodes, the prisms cover the touch electrodes, the projection of the touch electrodes on the substrate is located between the projections of two adjacent light emitting units on the substrate, the touch control layer further includes a first auxiliary electrode, the first auxiliary electrode is arranged in the same layer as the touch electrodes, the projection of the first auxiliary electrode on the substrate at least surrounds and covers a part of the projection of the prism opening corresponding to one light emitting unit on the substrate, and the first auxiliary electrode is floating.

14. The display panel of claim 13, wherein, The projection of the first auxiliary electrode on the substrate surrounds and covers a part of the projection of the prism opening corresponding to the smallest light emitting unit among the three light emitting units, the touch control layer further includes a second auxiliary electrode, the second auxiliary electrode is arranged in the same layer as the touch electrodes, the projection of the second auxiliary electrode on the substrate surrounds and covers a part of the projection of the prism opening corresponding to the smaller light emitting unit among the remaining two light emitting units on the substrate, the area covered by the projection of the first auxiliary electrode on the corresponding prism opening is greater than the area covered by the projection of the second auxiliary electrode on the corresponding prism opening, and the second auxiliary electrode is floating.

15. The display panel of claim 13, wherein, The touch control layer further includes a touch insulation layer; The touch electrodes include touch pattern electrodes and bridge electrodes, the touch pattern electrodes include touch transmitting electrodes and touch receiving electrodes; The touch pattern electrodes are located on the side of the touch insulation layer away from the substrate, the bridge electrodes are located on the side of the touch insulation layer close to the substrate, and the first auxiliary electrode is arranged in the same layer as the touch pattern electrodes; Alternatively, the bridge electrodes are located on the side of the touch insulation layer away from the substrate, the touch pattern electrodes are located on the side of the touch insulation layer close to the substrate, and the first auxiliary electrode is arranged in the same layer as the bridge electrodes.

16. The display panel of claim 13, wherein, On the thickness section of the display panel, the side of the prism close to the prism opening is an inclined surface, the included angle between the inclined surface and the horizontal direction is an inclination angle, the thickness of the prism is equal, and the inclination angles of the side of the prism close to the first prism opening, the side of the prism close to the second prism opening, and the side of the prism close to the third prism opening are inversely proportional to the sizes of the corresponding light emitting units.

17. The display panel of claim 13, wherein, In the thickness direction of the display panel, the distances from the at least two light emitting units to the corresponding prism openings are different.

18. The display panel of claim 13, wherein, On the thickness section of the display panel, the differences between the sizes of the at least two prism openings and the corresponding light emitting units are different.

19. A display device comprising: The display panel includes any one of the display panels according to claims 1-18.

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