Display panel and display device

Abstract

Embodiments of the present application provide a display panel and a display device, and relate to the technical field of display. The display panel is used to solve the problem that the display effect of the display panel is poor due to large light loss when the display angle of the display panel is increased. The display panel comprises: a substrate layer; a pixel definition layer arranged on one side of the substrate layer, the pixel definition layer comprising a plurality of hollows, and a light emitting layer arranged in each hollow; and an encapsulation layer arranged on a side of the pixel definition layer away from the substrate layer, the encapsulation layer comprising at least two refractive layers with different refractive indexes, an included angle between at least one contact surface of the at least two refractive layers and a thickness direction being an acute angle, and / or the at least one contact surface being parallel to the thickness direction.

Description

TECHNICAL FIELD

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

[0002] With the continuous progress of display technology, the displayable angle range of display panels gradually increases, and the requirements for the display effect of display panels in the full display angle range also gradually increase. For display panels that have multi-viewing angle viewing needs, such as vehicle-mounted display screens, television display screens, etc., the display brightness at other angles outside the main viewing angle range needs to be enhanced to improve the display effect of the display panel.

[0003] However, the existing method for increasing the display viewing angle of the display panel causes light loss, reduces the light output of the display panel, and thus causes the display panel to have reduced brightness, affecting the display effect of the picture. SUMMARY

[0004] The display panel and the display device provided by the embodiments of the present application can solve the problem that the display panel currently has large light loss when the display viewing angle is increased, resulting in poor display effect of the display panel.

[0005] In a first aspect, the present application provides a display panel, comprising:

[0006] a substrate layer;

[0007] a pixel definition layer disposed on one side of the substrate layer, the pixel definition layer comprising a plurality of hollows, and a light-emitting layer disposed in the hollows;

[0008] an encapsulation layer disposed on a side of the pixel definition layer away from the substrate layer, the encapsulation layer comprising at least two refractive layers with different refractive indexes, at least one contact surface of the at least two refractive layers and the thickness direction forming an acute angle, and / or the at least one contact surface being parallel to the thickness direction.

[0009] In some embodiments, the encapsulation layer comprises at least one high-refractive layer and at least one low-refractive layer, the high-refractive layer being disposed between the low-refractive layer and the light-emitting layer, the refractive index of the high-refractive layer being greater than the refractive index of the low-refractive layer.

[0010] In some embodiments, the high-refractive layer comprises a plurality of high-refractive structures, and a projection of the high-refractive structures on the substrate layer covers the hollows; and / or,

[0011] the projections of the at least two high-refractive structures on the substrate layer do not overlap.

[0012] In some embodiments, at least one of the high-refractive structures is further away from the surface of the substrate layer side than the pixel defining layer is from the surface of the substrate layer side;

[0013] and / or,

[0014] The edge of the high-refractive structure orthographically projected on the substrate layer encloses the edge of the hollowing orthographically projected on the substrate layer.

[0015] In some embodiments, the high-refractive structure comprises a first structure part and a second structure part, wherein the first structure part is disposed in the hollowing, and the second structure part is disposed on the side of the first structure part away from the substrate layer;

[0016] The side surface of the second structure part in the thickness direction has an angle of slope, and the angle of slope is a right angle or an acute angle;

[0017] and / or,

[0018] The angle between the surface of the second structure part away from the substrate layer side and the thickness direction is an acute angle.

[0019] In some embodiments, when the orthographic projection of the high-refractive layer on the substrate layer is a polygon, the angles between at least two side surfaces of the second structure part and the thickness direction are equal;

[0020] and / or,

[0021] The angle of slope of the side surface of the second structure part in the thickness direction away from the substrate layer side is greater than the angle of slope of the side surface of the second structure part in the thickness direction close to the substrate layer side.

[0022] In some embodiments, the edge of the orthographic projection of the second structure part on the substrate layer encloses the edge of the orthographic projection of the first structure part on the substrate layer, or the edge of the orthographic projection of the first structure part on the substrate layer coincides with the edge of the orthographic projection of the second structure part on the substrate layer.

[0023] In some embodiments, the edge of the orthographic projection of the surface of the second structure part away from the substrate layer side on the substrate layer coincides with the edge of the orthographic projection of the surface of the first structure part close to the substrate layer side on the substrate layer.

[0024] In some embodiments, the display panel further comprises:

[0025] an anode layer;

[0026] a cathode layer, and the light-emitting layer is disposed between the anode layer and the cathode layer;

[0027] The edge of the high-refractive layer orthogonally projected on the substrate layer encloses the edge of the light-emitting layer orthogonally projected on the substrate layer, or the edge of the high-refractive layer orthogonally projected on the substrate layer coincides with the edge of the light-emitting layer orthogonally projected on the substrate layer, and the edge of the anode layer orthogonally projected on the substrate layer encloses the edge of the light-emitting layer orthogonally projected on the substrate layer.

[0028] Or,

[0029] The edge of the high-refractive layer orthogonally projected on the substrate layer encloses the edge of the anode layer orthogonally projected on the substrate layer, or the edge of the high-refractive layer orthogonally projected on the substrate layer coincides with the edge of the anode layer orthogonally projected on the substrate layer, and the edge of the light-emitting layer orthogonally projected on the substrate layer encloses the edge of the anode layer orthogonally projected on the substrate layer.

[0030] In some embodiments, the edge of the at least one surface of the high-refractive layer perpendicular to the thickness direction orthogonally projected on the substrate layer encloses the edge of the anode layer orthogonally projected on the substrate layer, or the edge of the at least one surface of the high-refractive layer perpendicular to the thickness direction orthogonally projected on the substrate layer coincides with the edge of the anode layer orthogonally projected on the substrate layer.

[0031] In some embodiments, the encapsulation layer further comprises an auxiliary refractive layer, the auxiliary refractive layer is disposed between the high-refractive layer and the light-emitting layer, the included angle between the at least one contact surface of the auxiliary refractive layer and the thickness direction is an acute angle, and / or the at least one contact surface is parallel to the thickness direction.

[0032] The refractive index of the auxiliary refractive layer is different from the refractive index of the high-refractive layer.

[0033] In some embodiments, the refractive index of the auxiliary refractive layer is greater than the refractive index of the high-refractive layer.

[0034] In some embodiments, the edge of the high-refractive layer orthogonally projected on the substrate layer encloses the edge of the auxiliary refractive layer orthogonally projected on the substrate layer.

[0035] And / or,

[0036] The thickness of the auxiliary refractive layer is less than or equal to the thickness of the high-refractive layer.

[0037] In some embodiments, the edge of the auxiliary refractive layer orthogonally projected on the substrate layer near one end of the substrate layer encloses the edge of the auxiliary refractive layer orthogonally projected on the substrate layer far from the one end of the substrate layer.

[0038] And / or,

[0039] The edge of the high-refractive layer, which is close to one end of the substrate layer and is orthographically projected on the substrate layer, coincides with the edge of the auxiliary high-refractive layer, which is close to one end of the substrate layer and is orthographically projected on the substrate layer.

[0040] In some embodiments, the contact surface between the high-refractive layer and at least one of the low-refractive layers is curved, and the angle between the line connecting at least two points on the curved surface and the thickness direction is an acute angle.

[0041] In some embodiments, the packaging layer further comprises at least two inorganic layers, and at least one of the high-refractive layers and at least one of the low-refractive layers are arranged between the two inorganic layers.

[0042] and / or,

[0043] At least one of the high-refractive layers comprises an organic material.

[0044] and / or,

[0045] At least one of the low-refractive layers comprises an organic material.

[0046] A second aspect of the embodiments of the present application provides a display device, comprising:

[0047] The display panel according to any one of the first aspect.

[0048] The embodiments of the present application can achieve the following effects by arranging at least two refractive layers with different refractive indexes in the packaging layer. During the process of light exiting the packaging layer, the light will pass through the refractive layers with different refractive indexes in sequence, and the propagation direction of the light will be changed at the interface of the refractive layers with different refractive indexes, so as to achieve the effect of diverging the light. By changing the shape of the refractive layers, the contact surface of the refractive layers with different refractive indexes can form an angle with the thickness direction, or be parallel to the thickness direction, which can further increase the exit angle of the light, and can also reduce the number of reflections of the light in the packaging layer. The light can exit at the contact surface which forms an angle with the thickness direction or is parallel to the thickness direction, which can reduce the loss of the light, so as to increase the displayable angle of the display panel, improve the uniformity of the display brightness of the display panel at each viewing angle, and improve the display effect of the display picture. BRIEF DESCRIPTION OF DRAWINGS

[0049] In order to more clearly illustrate the technical solutions of the present application, the drawings required in the embodiments will be briefly introduced below. Obviously, other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0050] Figure 1 A schematic partial structure diagram of a display panel provided by the embodiments of the present application;

[0051] Figure 2 FIG. 1 shows a schematic partial structure diagram of a display panel according to an embodiment of the present application;

[0052] Figure 3 FIG. 2 shows a schematic partial structure diagram of a display panel according to another embodiment of the present application;

[0053] Figure 4 FIG. 3 shows a schematic partial structure diagram of a display panel according to still another embodiment of the present application;

[0054] Figure 5 FIG. 4 shows a schematic partial structure diagram of a display panel according to yet another embodiment of the present application;

[0055] Figure 6 FIG. 5 shows a schematic partial structure diagram of a display panel according to another embodiment of the present application;

[0056] Figure 7 FIG. 6 shows a schematic light path diagram of a display panel according to an embodiment of the present application;

[0057] Figure 8 FIG. 7 shows a schematic partial structure diagram of a display panel according to another embodiment of the present application;

[0058] Figure 9 FIG. 8 shows a schematic partial structure diagram of a display panel according to still another embodiment of the present application;

[0059] Figure 10 FIG. 9 shows a schematic partial structure diagram of a display panel according to yet another embodiment of the present application;

[0060] Figure 11 FIG. 10 shows a schematic partial structure diagram of a display panel according to another embodiment of the present application;

[0061] Figure 12 FIG. 11 shows a schematic partial structure diagram of a display panel according to still another embodiment of the present application;

[0062] Figure 13 FIG. 12 shows a schematic structure diagram of a display device according to an embodiment of the present application. DETAILED DESCRIPTION

[0063] The embodiments will be described in detail with reference to the drawings, wherein like reference numerals refer to like elements throughout. The following detailed description is not intended to represent all embodiments in accordance with the present application. Rather, the following description is intended only to describe some embodiments in accordance with the present application as detailed in the claims. In the several embodiments provided in the present application, it is to be understood that the disclosed apparatus and methods can be implemented in various forms of hardware, software, or combinations thereof; and that the embodiments described below are merely illustrative of the principles of the present application.

[0064] With the continuous progress of display technology, the displayable angle range of the display panel gradually increases, and the requirement for the display effect of the display panel in the full display angle range is gradually increased. For the display panel with multi-viewing angle viewing demand, such as a vehicle display screen, a television display screen, etc., the display brightness of other angles outside the main viewing angle range needs to be enhanced to improve the display effect of the display panel. However, the existing display panel display angle increasing method can cause light loss, resulting in a decrease in the display panel brightness and affecting the display effect of the picture.

[0065] Therefore, the display panel and the display device provided by the embodiments of the present application can solve the problem that the current display panel has a large light loss when the display angle is increased, resulting in poor display effect of the display panel.

[0066] In a first aspect, a display panel is provided, comprising: a substrate layer, a pixel definition layer, and an encapsulation layer; the pixel definition layer is arranged on one side of the substrate layer, the pixel definition layer comprises a plurality of hollows, and a light-emitting layer is arranged in each hollow; the encapsulation layer is arranged on a side of the pixel definition layer away from the substrate layer, the encapsulation layer comprises at least two refractive layers with different refractive indexes, an included angle between at least one contact surface of the at least two refractive layers and a thickness direction is an acute angle, and / or the at least one contact surface is parallel to the thickness direction.

[0067] An exemplary display panel is shown in FIG. 1. As shown in FIG. 1, the display panel comprises a substrate layer 100, a pixel definition layer 200, a light-emitting layer 300, and an encapsulation layer 400 comprising a high-refractive layer 500 and a low-refractive layer 600. The high-refractive layer 500 is arranged between the low-refractive layer 600 and the light-emitting layer 300, and an included angle between at least one contact surface of the high-refractive layer 500 and the low-refractive layer 600 and a thickness direction is an acute angle. Figure 1 Figure 1 According to the refraction principle of light, when light enters a less dense medium from a denser medium, the light is refracted away from the normal. As shown in FIG. 2, a light path of a first light L1 inside the encapsulation layer 400 is shown. The light-emitting device in the light-emitting layer 300 emits the first light L1, the first light L1 passes through the high-refractive layer 500 to reach the contact surface of the low-refractive layer 600, the included angle between the contact surface and the thickness direction is an acute angle, and the first light L1 is refracted on the contact surface. The refraction direction of the first light L1 is away from the normal direction perpendicular to the contact surface, and the exit angle is increased. As shown in FIG. 3, a light path of a second light L2 inside the encapsulation layer 400 is shown. The second light L2 is emitted by the light-emitting device in the light-emitting layer 300, and the second light L2 passes through the low-refractive layer 600 to reach the contact surface of the high-refractive layer 500, the included angle between the contact surface and the thickness direction is an acute angle, and the second light L2 is refracted on the contact surface. The refraction direction of the second light L2 is away from the normal direction perpendicular to the contact surface, and the exit angle is increased.

[0068] Figure 1 Figure 1 ​​​As shown in the figure, the light emitting device in the light emitting layer 300 emits the second light L2, the second light L2 passes through the high refractive layer 500 to reach the contact surface of the low refractive layer 600 which is perpendicular to the thickness direction, and the refraction occurs on the contact surface, the refraction direction of the second light L2 deviates from the normal direction of the contact surface, and the exit angle increases.

[0069] Exemplarily, Figure 2 Another schematic partial structure diagram of a display panel is provided for the embodiments of the present application. As shown in the figure, Figure 2 The display panel comprises: a substrate layer 100; a pixel defining layer 200, a light emitting layer 300, and an encapsulation layer 400 comprising a high refractive layer 500 and a low refractive layer 600, wherein the low refractive layer 600 is arranged between the high refractive layer 500 and the light emitting layer 300, and the included angle between at least one contact surface of the high refractive layer 500 and the low refractive layer 600 and the thickness direction is an acute angle.

[0070] According to the refraction principle of light, when light enters from a less dense medium into a denser medium, it will be refracted towards the normal direction. The light path of the third light L3 formed inside the encapsulation layer 400 is shown in the figure Figure 2 As shown in the figure, the light emitting device in the light emitting layer 300 emits the third light L3, the third light L3 passes through the low refractive layer 600 to reach the contact surface of the high refractive layer 500 which is an acute angle with the thickness direction, and the refraction occurs on the contact surface, the refracted third light L3 approaches the normal direction of the contact surface, and the exit angle increases.

[0071] Exemplarily, Figure 3 Another schematic partial structure diagram of a display panel is provided for the embodiments of the present application. As shown in the figure, Figure 3 The display panel comprises: a substrate layer 100; a pixel defining layer 200, a light emitting layer 300, and an encapsulation layer 400 comprising a high refractive layer 500 and a low refractive layer 600, wherein the low refractive layer 600 is arranged between the high refractive layer 500 and the light emitting layer 300, and at least one contact surface of the high refractive layer 500 and the low refractive layer 600 is parallel to the thickness direction. The light path of the fourth light L4 formed inside the encapsulation layer 400 is shown in the figure Figure 3 As shown in the figure, the light emitting device in the light emitting layer 300 emits the fourth light L4, the fourth light L4 passes through the low refractive layer 600 to reach the contact surface of the high refractive layer 500 which is parallel to the thickness direction, and the refraction occurs on the contact surface, the refracted fourth light L4 approaches the normal direction of the contact surface, i.e. the light path of the fourth light L4 is inclined to the horizontal direction, and the exit angle increases.

[0072] It should be noted that the current display panel display viewing angle increasing method needs to adjust the arrangement form of the liquid crystal molecules by applying an edge electric field to the liquid crystal molecules to change the polarization direction of the light, so as to adjust the display viewing angle of the display panel. However, in the process of adjusting the display angle by changing the polarization direction of the light, the control precision of the liquid crystal molecules is required to be high, and the control difficulty is large, and light leakage is easy to occur, which affects the display brightness of the display panel.

[0073] The light will also be reflected on the contact surface of the high-refractive layer 500 and the low-refractive layer 600. The contact surface of the high-refractive layer 500 and the low-refractive layer 600, which forms an acute angle with the thickness direction or a parallel relationship, can change the optical path of the light, form diffuse reflection inside the film layer, reduce the number of reflections of the light inside the film layer, facilitate the emission of the light, increase the light output of the film layer, and thus reduce the loss of the light and improve the display brightness of the display panel under each viewing angle, and improve the display effect of the display panel.

[0074] For example, the encapsulation layer 400 is a transparent material layer. The high-refractive layer 500 and the low-refractive layer 600 can be set according to the target display effect of the display panel, wherein the target display effect includes a target display angle and a corresponding target display brightness. The angle relationship between the contact surface of the high-refractive layer 500 and the low-refractive layer 600 and the thickness direction can be determined according to the target display angle of the display panel. The larger the included angle between the contact surface and the thickness direction, the stronger the diffusion ability of the light, and the larger the display angle of the display panel. The refractive index of the high-refractive layer 500 and the low-refractive layer 600 can be determined according to the target display angle of the display panel. The area of each contact surface of the high-refractive layer 500 and the low-refractive layer 600 can be determined according to the target display brightness of the display panel. The larger the area of the contact surface perpendicular to the thickness direction, the more light can be emitted vertically, the higher the display brightness of the normal viewing angle, and the better the display effect of the display panel at the normal viewing angle. The larger the area of the contact surface forming an acute angle with the thickness direction or a parallel relationship, the more light can be diffused, the higher the display brightness of the large-angle display viewing angle, and the better the enhancement effect of the display viewing angle of the display panel.

[0075] The encapsulation layer 400 is provided with at least two refractive layers with different refractive indexes. In the process of light exiting the encapsulation layer 400, the light will pass through the refractive layers with different refractive indexes in sequence, and the propagation direction of the light will be changed at the interface of the refractive layers with different refractive indexes to achieve the effect of diverging the light. By changing the shape of the refractive layers, the contact surface of the refractive layers with different refractive indexes forms an angle with the thickness direction, or is parallel to the thickness direction, which can further increase the exit angle of the light, reduce the reflection times of the light in the encapsulation layer 400, facilitate the light to exit at the contact surface forming an angle with the thickness direction or parallel to the thickness direction, reduce the loss of the light, and thus increase the displayable angle of the display panel, improve the uniformity of the display brightness of the display panel at each viewing angle, and improve the display effect of the display picture.

[0076] In some possible embodiments, the encapsulation layer 400 includes at least one high-refraction layer 500 and at least one low-refraction layer 600, the high-refraction layer 500 is arranged between the low-refraction layer 600 and the light-emitting layer 300, and the refractive index of the high-refraction layer 500 is greater than that of the low-refraction layer 600.

[0077] In some possible embodiments, the high-refraction layer 500 includes a plurality of high-refraction structures 510, and the orthographic projection of the high-refraction structures 510 on the substrate layer covers the hollow structure.

[0078] Figure 4 Another schematic partial structure diagram of a display panel is provided in the embodiments of the present application. As shown in Figure 4 As shown in the display panel shown in Figure 1 The high-refraction layer 500 includes the high-refraction structures 510.

[0079] The light-emitting device in the light-emitting layer 300 emits light, which exits through the surface of the hollow structure in the pixel definition layer 200 away from the substrate layer 100. The orthographic projection of the high-refraction structures 510 on the substrate layer 100 covers the hollow structure on the pixel definition layer 200, which can make the light pass through the high-refraction structures 510 and exit from the surface of the low-refraction layer 600 after refraction at the contact surface of the low-refraction layer 600, improve the absorption capacity of the high-refraction layer 500 for the light, improve the adjustment capacity of the encapsulation layer 400 for the display angle of the display panel, and further expand the display viewing angle of the display panel.

[0080] In some possible embodiments, the orthographic projections of the at least two high-refraction structures 510 on the substrate layer do not overlap.

[0081] By setting the at least two high-refraction structures 510 without overlapping between the orthographic projections of the at least two high-refraction structures 510 on the substrate layer 100, the contact surface between the high-refraction layer 500 and the low-refraction layer 600 can be increased, and at least two contact surfaces with an acute angle with the thickness direction or parallel to the thickness direction can be formed between the two high-refraction structures 510, so that the diffusion capability of the encapsulation layer 400 to the light can be improved, the display angle of the display panel can be increased, and the display effect of the display panel can be improved.

[0082] In some possible implementation manners, the surface of the at least one high-refraction structure 510 away from the substrate layer 100 is beyond the surface of the pixel definition layer 200 away from the substrate layer 100.

[0083] By setting the surface of the high-refraction structure 510 away from the substrate layer 100 beyond the surface of the pixel definition layer 200 away from the substrate layer 100, the contact surface between the high-refraction layer 500 and the low-refraction layer 600 can be formed with an acute angle with the thickness direction or parallel to the thickness direction, so that the initial inclination angle of the light can be provided, the limitation of the hollow to the refraction surface can be reduced, the diffusion capability of the encapsulation layer 400 to the light can be further improved, the display angle of the display panel can be increased, and the display effect of the display panel can be improved.

[0084] In some possible implementation manners, the edge of the orthographic projection of the high-refraction structure 510 on the substrate layer 100 surrounds the edge of the orthographic projection of the hollow on the substrate layer 100.

[0085] It should be noted that in the case that the edge of the orthographic projection of the high-refraction structure 510 on the substrate layer 100 cannot surround the edge of the orthographic projection of the hollow on the substrate layer 100, the high-refraction structure 510 and the low-refraction layer 600 are arranged in the hollow structure at the same time, the light will be refracted in the hollow structure, so that part of the light is incident to the sidewall of the hollow structure, causing light loss, affecting the light output of the display panel, and thus affecting the display brightness and the display effect of the display panel.

[0086] By setting the edge of the orthographic projection of the high-refraction structure 510 on the substrate layer 100 to surround the edge of the orthographic projection of the hollow on the substrate layer 100, the light can be prevented from being refracted in the hollow structure, and the light loss can be reduced, so that the display brightness and the display effect of the display panel can be improved.

[0087] In some possible implementation manners, the high-refraction structure 510 includes a first structure part and a second structure part, the first structure part is arranged in the hollow, and the second structure part is arranged on the side of the first structure part away from the substrate layer 100; the side surface of the second structure part in the thickness direction has an angle of inclination, and the angle of inclination is a right angle or an acute angle.

[0088] As shown in FIG. 6, the high-refraction structure 510 includes a first structure part and a second structure part. Figure 3As shown, the high-refraction structure 510 includes a first structure part 511 and a second structure part 512, and the dashed line represents the interface between the first structure part 511 and the second structure part 512.

[0089] For example, the first structure part 511 and the second structure part 512 can be formed of materials with the same refractive index, or can be formed of materials with different refractive indexes. When the first structure part 511 and the second structure part 512 are formed of materials with different refractive indexes, the light rays can be refracted at the interface between the first structure part 511 and the second structure part 512, and the optical path of the light rays can be further changed, so as to facilitate expansion of the display viewing angle of the display panel. In the case where the first structure part 511 and the second structure part 512 are formed of materials with different refractive indexes, the refractive indexes of the first structure part 511 and the second structure part 512 can be determined according to the shape of the pixel defining layer 200.

[0090] By arranging the first structure part 511 in the hollow structure, the amount of light rays refracted in the hollow structure can be reduced, so as to reduce the amount of light rays incident on the sidewall of the hollow structure, and increase the amount of light rays incident on the second structure part 512. By arranging the side surface of the second structure part 512 in the thickness direction to have an angle of inclination, the initial inclination angle can be provided in the case where the light rays pass through the contact surface between the high-refraction layer 500 and the low-refraction layer 600, so as to facilitate increase of the exit angle of the light rays, and improve the display angle of the display panel.

[0091] In some possible implementation manners, the angle between the surface of the second structure part 512 away from the substrate layer 100 and the thickness direction is an acute angle.

[0092] The side surface of the second structure part 512 in the thickness direction having an angle of inclination can provide the refracted light rays with an initial inclination angle, and expand the exit angle of the light rays. In order to ensure the display brightness of the display panel under a large viewing angle, and improve the uniformity of the display image, it is necessary to increase the surface area of the side surface of the second structure part 512 in the thickness direction having an angle of inclination, and increase the amount of light rays incident on the side surface, so as to improve the light output of the display panel under a large viewing angle, and improve the uniformity of the display image. By arranging the angle between the surface of the second structure part 512 away from the substrate layer 100 and the thickness direction to be an acute angle, compared with a right angle, the display panel can be thinned, and the display effect of the display image can be improved.

[0093] In some possible implementation manners, in the case where the orthogonal projection of the high-refraction layer 500 on the substrate layer 100 is a polygon, the angles between at least two side surfaces of the second structure part 512 and the thickness direction are equal.

[0094] In the case that the included angle between the at least two sides of the second structure part 512 and the thickness direction is equal, the surface perpendicular to the thickness direction can be formed on the side of the second structure part 512 away from the substrate layer 100, so that the light can be emitted vertically from the second structure part 512, thereby improving the display brightness of the display panel in the normal viewing angle and improving the display effect of the display panel.

[0095] In some possible implementation manners, the slope angle of the side of the second structure part 512 in the thickness direction away from the side of the substrate layer 100 is greater than the slope angle of the side close to the substrate layer 100.

[0096] It should be noted that the slope angle of the side of the second structure part 512 in the thickness direction away from the side of the substrate layer 100 is greater than the slope angle of the side close to the substrate layer 100, so that the upper-narrow lower-wide structure in which the surface area of the side of the second structure part 512 away from the substrate layer 100 is less than the surface area of the side close to the substrate layer 100 can be formed. Compared with the upper-wide lower-narrow structure, the light can be deflected to the side of the substrate layer 100 on the contact surface between the second structure part 512 and the low-refractive layer 600 with an acute angle to the thickness direction, which causes the loss of light and affects the light output of the display panel and the display brightness of the display panel.

[0097] By making the slope angle of the side of the second structure part 512 in the thickness direction away from the side of the substrate layer 100 greater than the slope angle of the side close to the substrate layer 100, the amount of light deflected to the side of the substrate layer 100 can be reduced, the loss of light inside the encapsulation layer 400 can be reduced, the light output of the display panel can be improved, the display brightness of the display panel can be improved, the uniformity of the brightness of the display picture can be improved, and the display effect of the display panel can be enhanced.

[0098] In some possible implementation manners, the edge of the second structure part 512 in the orthographic projection on the substrate layer 100 surrounds the edge of the first structure part 511 in the orthographic projection on the substrate layer 100.

[0099] By making the edge of the second structure part 512 in the orthographic projection on the substrate layer 100 surround the edge of the first structure part 511 in the orthographic projection on the substrate layer 100, the light emitted by the first structure part 511 can enter the second structure part 512 completely, the refraction of light on the contact surface between the first structure part 511 and the low-refractive layer 600 can be avoided, and the light incident to the side wall of the hollow structure of the pixel definition layer 200 can be reduced, thereby reducing the loss of light, improving the light output of the display panel, improving the display brightness of the display panel, improving the uniformity of the brightness of the display picture, and enhancing the display effect of the display panel.

[0100] In some possible implementation manners, the edge of the first structure part 511 in the orthographic projection on the substrate layer 100 coincides with the edge of the second structure part 512 in the orthographic projection on the substrate layer 100.

[0101] It should be noted that, in the case that the edge of the second structure part 512 in orthographic projection on the substrate layer 100 surrounds the edge of the first structure part 511 in orthographic projection on the substrate layer 100, different high-refraction structures 510 are likely to be in contact, which can cause further refraction of light, affect the emission of light, and affect the display effect of the display panel.

[0102] By setting the edge of the first structure part 511 in orthographic projection on the substrate layer 100 to coincide with the edge of the second structure part 512 in orthographic projection on the substrate layer 100, the high-refraction structures 510 can be independent of each other, the light emitted by the first structure part 511 can completely enter the second structure part 512 connected thereto, the display angle of the display panel can be increased, the display brightness of the display panel under a large viewing angle can be improved, the uniformity of the display brightness of the display panel can be improved, and the display effect of the display panel can be improved.

[0103] In some possible implementation manners, the edge of the second structure part 512 away from the substrate layer 100 in orthographic projection on the substrate layer 100 coincides with the edge of the first structure part 511 close to the substrate layer 100 in orthographic projection on the substrate layer 100.

[0104] It should be noted that, in the case that the edge of the first structure part 511 in orthographic projection on the substrate layer 100 surrounds the edge of the second structure part 512 in orthographic projection on the substrate layer 100, part of the light can be refracted at the contact surface of the first structure part 511 and the low-refraction layer 600, the difference between the refraction angle and the incidence angle of part of the light is small, the light emission amount of the display panel under a large viewing angle is small, the display brightness of the display panel under a large viewing angle is affected, and the uniformity of the display brightness of the display panel is affected.

[0105] By setting the edge of the second structure part 512 away from the substrate layer 100 in orthographic projection on the substrate layer 100 to coincide with the edge of the first structure part 511 close to the substrate layer 100 in orthographic projection on the substrate layer 100, it can be ensured that the light in the first structure part 511 is completely incident to the second structure part 512, the light emission amount on the contact surface between the second structure part 512 and the low-refraction layer 600 with an acute angle with the thickness direction can be increased, the light emission amount of the display panel under a large viewing angle can be increased, the display brightness of the display panel under a large viewing angle can be improved, and the uniformity of the display brightness of the display panel can be improved.

[0106] In some possible implementation manners, the display panel further includes: an anode layer; a cathode layer, the light-emitting layer 300 is arranged between the anode layer and the cathode layer; and the edge of the high-refraction layer 500 in orthographic projection on the substrate layer 100 surrounds the edge of the light-emitting layer 300 in orthographic projection on the substrate layer 100.

[0107] Figure 5 FIG. 1 shows a schematic partial structure diagram of a display panel according to an embodiment of the present application. As shown in FIG. 1, the display panel comprises a substrate layer 100, a pixel definition layer 200, a light-emitting layer 300, an encapsulation layer 400 comprising a high-refractive layer 500 and a low-refractive layer 600, a cathode layer 700, an anode layer 800, and a driving substrate 900. The high-refractive layer 500 is arranged between the low-refractive layer 600 and the light-emitting layer 300. The driving substrate 900 comprises a plurality of driving transistors 910. Each driving transistor 910 comprises a drain 911, a source 912, an active layer 913, and a gate 914. Figure 5 The light-emitting layer 300 comprises a plurality of light-emitting devices. Each light-emitting device comprises a first electrode and a second electrode. The first electrode is arranged on the pixel definition layer 200. The second electrode is arranged on the encapsulation layer 400. The first electrode and the second electrode are arranged in direct contact with each other.

[0108] It should be noted that the light-emitting intensity of the light-emitting device in the light-emitting layer 300 is higher at the position where the first electrode and the second electrode are in direct contact with each other, and the light-emitting intensity of the light-emitting device is lower at the position where the first electrode and the second electrode are not in direct contact with each other.

[0109] By arranging the edge of the orthographic projection of the high-refractive layer 500 on the substrate layer 100 to surround the edge of the orthographic projection of the light-emitting layer 300 on the substrate layer 100, the light emitted by the light-emitting device in the light-emitting layer 300 can be totally incident on the high-refractive layer 500. In this way, the display angle of the display panel can be increased, the display brightness of the display panel under large viewing angles can be improved, the uniformity of the display brightness of the display panel can be improved, and the display effect of the display panel can be improved.

[0110] In some possible embodiments, the edge of the orthographic projection of the high-refractive layer 500 on the substrate layer 100 coincides with the edge of the orthographic projection of the light-emitting layer 300 on the substrate layer 100, and the edge of the orthographic projection of the anode layer 800 on the substrate layer 100 surrounds the edge of the orthographic projection of the light-emitting layer 300 on the substrate layer 100.

[0111] By arranging the edge of the orthographic projection of the high-refractive layer 500 on the substrate layer 100 to coincide with the edge of the orthographic projection of the light-emitting layer 300 on the substrate layer 100, the high-refractive structures 510 in the same high-refractive layer 500 can be prevented from being in contact with each other. In this way, each high-refractive structure 510 can be independent of each other, and the light can be prevented from being refracted again between the high-refractive structures 510, so as to avoid affecting the exit angle of the light. In this way, the display angle of the display panel can be increased. By arranging the edge of the orthographic projection of the anode layer 800 on the substrate layer 100 to surround the edge of the orthographic projection of the light-emitting layer 300 on the substrate layer 100, the light-emitting amount of each light-emitting device in the light-emitting layer 300 can be maximized. In this way, the display brightness of the display panel under large viewing angles can be improved, the uniformity of the display brightness of the display panel can be improved, and the display effect of the display panel can be improved.

[0112] In some possible embodiments, the edge of the orthographic projection of the high-refractive layer 500 on the substrate layer 100 surrounds the edge of the orthographic projection of the anode layer 800 on the substrate layer 100.

[0113] By setting the edge of the orthographic projection of the high-refractive layer 500 on the substrate layer 100 to enclose the edge of the orthographic projection of the anode layer 800 on the substrate layer, most of the light emitted by the light-emitting devices in the light-emitting layer 300 can be incident to the high-refractive layer 500, so that the light-exiting amount of the display panel at a large viewing angle can be improved, the display brightness of the display panel at a large viewing angle can be improved, and the uniformity of the display brightness of the display panel can be improved.

[0114] In some possible implementation manners, the edge of the orthographic projection of the high-refractive layer 500 on the substrate layer 100 coincides with the edge of the orthographic projection of the anode layer 800 on the substrate layer 100, and the edge of the orthographic projection of the light-emitting layer 300 on the substrate layer 100 encloses the edge of the orthographic projection of the anode layer 800 on the substrate layer 100.

[0115] By setting the edge of the orthographic projection of the high-refractive layer 500 on the substrate layer 100 to coincide with the edge of the orthographic projection of the anode layer 800 on the substrate layer 100, the light in each light-emitting device in the light-emitting layer 300 can be completely incident to the high-refractive layer 500, the light-exiting amount of the display panel at a large viewing angle can be improved, each high-refractive structure 510 in the high-refractive layer 500 can be independent of each other, the light can be prevented from being refracted again between the high-refractive structures 510, the exiting angle of the light can be affected, and thus the display angle of the display panel can be increased. By setting the edge of the orthographic projection of the light-emitting layer 300 on the substrate layer 100 to enclose the edge of the orthographic projection of the anode layer 800 on the substrate layer 100, the light-emitting layer 300 can emit light sufficiently, the utilization and the light-emitting efficiency of the light-emitting layer 300 can be improved, the display brightness of the display panel at a large viewing angle can be improved, and the uniformity of the display brightness of the display panel can be improved.

[0116] In some possible implementation manners, the edge of the orthographic projection of at least one surface of the high-refractive layer 500 perpendicular to the thickness direction on the substrate layer 100 encloses the edge of the orthographic projection of the anode layer 800 on the substrate layer 100.

[0117] By setting the edge of the orthographic projection of at least one surface of the high-refractive layer 500 perpendicular to the thickness direction on the substrate layer 100 to enclose the edge of the orthographic projection of the anode layer 800 on the substrate layer 100, the light emitted by the light-emitting layer 300 away from the substrate layer 100 and parallel to the thickness direction can be incident to the high-refractive layer 500 perpendicularly and exit perpendicularly from the surface of the high-refractive layer 500 perpendicular to the thickness direction, so that the display brightness of the display panel at a normal viewing angle can be improved, and the display effect of the display panel can be improved.

[0118] In some possible implementation manners, the edge of the orthographic projection of at least one surface of the high-refractive layer 500 perpendicular to the thickness direction on the substrate layer 100 coincides with the edge of the orthographic projection of the anode layer 800 on the substrate layer 100.

[0119] By setting the edge of the high-refractive layer 500 and the edge of the anode layer 800 on the substrate layer 100 to be coincident with the orthographic projection of the at least one surface of the high-refractive layer 500 on the substrate layer 100 in the thickness direction, the light emitted by the light-emitting layer 300 and vertically incident on the high-refractive layer 500 can be totally emitted vertically, thereby improving the display brightness of the display panel at the normal viewing angle and improving the display effect of the display panel.

[0120] In some possible embodiments, the encapsulation layer 400 further comprises an auxiliary refractive layer, which is arranged between the high-refractive layer 500 and the light-emitting layer 300, and the included angle between the at least one contact surface of the auxiliary refractive layer and the thickness direction is an acute angle; and the refractive index of the auxiliary refractive layer is different from that of the high-refractive layer 500.

[0121] Exemplarily, Figure 6 Another exemplary partial structural diagram of a display panel is provided in the embodiments of the present application. As shown in Figure 6 The display panel comprises a substrate layer 100, a pixel definition layer 200, a light-emitting layer 300, and an encapsulation layer 400 comprising a high-refractive layer 500, an auxiliary refractive layer 520, and a low-refractive layer 600.

[0122] Exemplarily, the refractive index of the auxiliary refractive layer 520 can be greater than that of the high-refractive layer 500, or the refractive index of the auxiliary refractive layer 520 can be less than that of the high-refractive layer 500.

[0123] It should be noted that the light-emitting devices in the light-emitting layer 300 can emit light rays with different exit angles, and the light rays can be incident on the high-refractive layer 500 through the auxiliary refractive layer 520 to form a first refraction, or the light rays can be incident on the auxiliary refractive layer 520 through the high-refractive layer 500 and then be incident on the high-refractive layer 500 through the auxiliary refractive layer 520 to form a second refraction.

[0124] It should be noted that in the case of first refraction, the moving direction of the light path relative to the normal can be determined according to the refractive index between the auxiliary refractive layer 520 and the high-refractive layer 500, and the initial inclination of the refractive surface can be provided by the included angle between the contact surface of the auxiliary refractive layer 520 and the high-refractive layer 500 and the thickness direction, so that the light path of the light rays passing through the low-refractive layer 600 is further converged or diffused relative to the light path of the light rays emitted by the light-emitting devices in the light-emitting layer 300. In the case of second refraction, the light rays undergo a first refraction close to the normal direction and a second refraction away from the normal direction on the two contact surfaces, respectively.

[0125] By setting the auxiliary refractive layer 520 between the high-refractive layer 500 and the light-emitting layer 300, the included angle between the at least one contact surface of the auxiliary refractive layer 520 and the high-refractive layer 500 and the thickness direction is an acute angle, the exit angle of the light can be further adjusted before the light reaches the contact surface between the high-refractive layer 500 and the low-refractive layer 600, the light can be prevented from being deflected to the side close to the substrate layer 100 after passing through the contact surface between the high-refractive layer 500 and the low-refractive layer 600, the loss of the light can be reduced, the exit angle of the light can be further increased, the display viewing angle of the display panel can be increased, and the display effect of the display panel can be improved.

[0126] In some possible implementation manners, the at least one contact surface of the auxiliary refractive layer 520 and the high-refractive layer 500 is parallel to the thickness direction; and the refractive index of the auxiliary refractive layer 520 is different from the refractive index of the high-refractive layer 500.

[0127] It should be noted that, for the contact surface of the auxiliary refractive layer 520 and the high-refractive layer 500 parallel to the thickness direction, the light emitted by the light-emitting device in the light-emitting layer 300 is located on the side of the normal close to the substrate layer 100, and the refracted light is deflected to the side away from the substrate layer 100. Therefore, by setting the at least one contact surface of the auxiliary refractive layer 520 and the high-refractive layer 500 parallel to the thickness direction, the loss of the light can be reduced, the exit angle of the light can be increased, the display viewing angle of the display panel can be increased, and the display effect of the display panel can be improved.

[0128] In some possible implementation manners, the refractive index of the auxiliary refractive layer 520 is greater than the refractive index of the high-refractive layer 500.

[0129] For example, Figure 7 A schematic light path diagram of a display panel provided by an embodiment of the present application is shown in FIG. 5. As shown in FIG. 5, a fifth light L5 is provided in the display panel. Figure 7 As shown in FIG. 5, the fifth light L5 is emitted by the light-emitting device in the light-emitting layer 300, and the fifth light L5 is refracted by the auxiliary refractive layer 520 and the high-refractive layer 500. Figure 6The light path formed inside the shown display panel is shown in FIG. 5. The refractive index of the auxiliary refractive layer 520 is greater than the refractive index of the high-refractive layer 500. The light emitting device of the light emitting layer 300 emits a fifth light ray L5. The fifth light ray L5 passes through the auxiliary refractive layer 520 and reaches a contact surface of the high-refractive layer 500 that forms an acute angle with the thickness direction. At the contact surface, the fifth light ray L5 is refracted, and the refracted direction of the fifth light ray L5 is closer to the normal direction of the contact surface. The fifth light ray L5 reaches another contact surface of the auxiliary refractive layer 520 and the high-refractive layer 500. At the contact surface, the fifth light ray L5 is refracted, and the refracted direction of the fifth light ray L5 is farther away from the normal direction of the contact surface. The fifth light ray L5 reaches a contact surface of the high-refractive layer 500 and the low-refractive layer 600 that forms an acute angle with the thickness direction. At the contact surface, the fifth light ray L5 is refracted, and the refracted direction of the fifth light ray L5 is farther away from the normal direction of the contact surface. The exit angle of the fifth light ray L5 increases. The light emitting device of the light emitting layer 300 emits a sixth light ray L6. The sixth light ray L6 passes through the auxiliary refractive layer 520 and reaches a contact surface of the high-refractive layer 500 that is perpendicular to the thickness direction. At the contact surface, the sixth light ray L6 is refracted, and the refracted direction of the sixth light ray L6 is farther away from the normal direction of the contact surface. The sixth light ray L6 reaches a contact surface of the high-refractive layer 500 and the low-refractive layer 600 that is perpendicular to the thickness direction. At the contact surface, the sixth light ray L6 is refracted, and the refracted direction of the sixth light ray L6 is farther away from the normal direction of the contact surface. The exit angle of the sixth light ray L6 increases.

[0130] By setting the refractive index of the auxiliary refractive layer 520 to be greater than the refractive index of the high-refractive layer 500, the incident angle of the light ray can be increased before the light ray is refracted at the contact surface of the high-refractive layer 500 and the low-refractive layer 600. Therefore, the display angle of the display panel can be further increased, and the display effect of the display panel can be improved.

[0131] In some possible embodiments, the edge of the orthogonal projection of the high-refractive layer 500 on the substrate layer 100 surrounds the edge of the orthogonal projection of the auxiliary refractive layer 520 on the substrate layer 100.

[0132] For example, the edge of the orthogonal projection of the high-refractive layer 500 on the substrate layer 100 can coincide with the edge of the orthogonal projection of the auxiliary refractive layer 520 on the substrate layer 100. The edge of the orthogonal projection of the auxiliary refractive layer 520 on the substrate layer 100 surrounds the edge of the orthogonal projection of the high-refractive layer 500 on the substrate layer 100.

[0133] For example, Figure 8 Another exemplary partial structural diagram of a display panel is provided in the present application. As shown in FIG. 6, the display panel comprises a substrate layer 100, a high-refractive layer 500, a low-refractive layer 600, and an auxiliary refractive layer 520. The high-refractive layer 500 is arranged on the substrate layer 100. The low-refractive layer 600 is arranged on the substrate layer 100 and is located on the side of the high-refractive layer 500. The auxiliary refractive layer 520 is arranged on the substrate layer 100 and is located on the side of the low-refractive layer 600. Figure 8As shown in the figure, the display panel comprises a substrate layer 100, a pixel defining layer 200, a light emitting layer 300, an encapsulation layer 400 comprising a high-refractive layer 500 and a low-refractive layer 600, and an auxiliary refractive layer 520 arranged between the light emitting layer 300 and the high-refractive layer 500. The edge of the normal projection of the high-refractive layer 500 on the substrate layer 100 encloses the edge of the normal projection of the auxiliary refractive layer 520 on the substrate layer 100. The light emitted by the light emitting device in the light emitting layer 300 can all be incident on the high-refractive layer 500 through the auxiliary refractive layer 520, so that the light is refracted once on the contact surface of the auxiliary refractive layer 520 and the high-refractive layer 500, thereby the incident angle of the light on the low-refractive layer 600 can be adjusted.

[0134] Exemplarily, Figure 9 Another exemplary partial structure diagram of a display panel is provided for the embodiments of the present application. As shown in the figure, Figure 9 As shown in the figure, the display panel comprises a substrate layer 100, a pixel defining layer 200, a light emitting layer 300, an encapsulation layer 400 comprising a high-refractive layer 500 and a low-refractive layer 600, and an auxiliary refractive layer 520 arranged between the light emitting layer 300 and the high-refractive layer 500. The edge of the normal projection of the high-refractive layer 500 on the substrate layer 100 encloses the edge of the normal projection of the auxiliary refractive layer 520 on the substrate layer 100. The light emitted by the light emitting device in the light emitting layer 300 can all be incident on the high-refractive layer 500 through the auxiliary refractive layer 520, so that the light is refracted once on the contact surface of the auxiliary refractive layer 520 and the high-refractive layer 500, thereby the incident angle of the light on the low-refractive layer 600 can be adjusted.

[0135] Exemplarily, Figure 10 Another exemplary partial structure diagram of a display panel is provided for the embodiments of the present application. As shown in the figure, Figure 10As shown, the display panel comprises a substrate layer 100, a pixel defining layer 200, a light emitting layer 300, an encapsulation layer 400 comprising a high-refractive layer 500 and a low-refractive layer 600, and an auxiliary refractive layer 520 arranged between the light emitting layer 300 and the high-refractive layer 500. The auxiliary refractive layer 520 is arranged inside the high-refractive layer 500 and is in contact with the high-refractive layer 500 at least at a contact surface parallel to the thickness direction. The edge of the normal projection of the auxiliary refractive layer 520 on the substrate layer 100 encloses the edge of the normal projection of the high-refractive layer 500 on the substrate layer 100. The auxiliary refractive layer 520 is arranged inside the high-refractive layer 500 and is not in direct contact with the light emitting layer 300. This can cause all the light entering the auxiliary refractive layer 520 to be refracted twice, increase the amount of light refracted twice, and further improve the ability of the encapsulation layer 400 to adjust the exit angle of the light, increase the display viewing angle of the display panel, and improve the display effect of the display panel.

[0136] For example, Figure 11 Another exemplary partial structure of a display panel is provided in the embodiments of the present application. As shown in Figure 11 As shown, the display panel comprises a substrate layer 100, a pixel defining layer 200, a light emitting layer 300, an encapsulation layer 400 comprising a high-refractive layer 500 and a low-refractive layer 600, and an auxiliary refractive layer 520 arranged between the light emitting layer 300 and the high-refractive layer 500. The auxiliary refractive layer 520 is arranged inside the high-refractive layer 500 and is in contact with the high-refractive layer 500 at least at a contact surface parallel to the thickness direction. The edge of the normal projection of the auxiliary refractive layer 520 on the substrate layer 100 encloses the edge of the normal projection of the high-refractive layer 500 on the substrate layer 100. The auxiliary refractive layer 520 is arranged inside the high-refractive layer 500 and is not in direct contact with the light emitting layer 300. This can cause all the light entering the auxiliary refractive layer 520 to be refracted twice, increase the amount of light refracted twice, and further improve the ability of the encapsulation layer 400 to adjust the exit angle of the light, increase the display viewing angle of the display panel, and improve the display effect of the display panel.

[0137] By arranging the edge of the normal projection of the high-refractive layer 500 on the substrate layer 100 to enclose the edge of the normal projection of the auxiliary refractive layer 520 on the substrate layer 100, the light can be refracted at the contact surface between the auxiliary refractive layer 520 and the high-refractive layer 500. This can increase the number of refractions of the light, enhance the ability of the encapsulation layer 400 to adjust the exit angle of the light, increase the display angle of the display panel, improve the uniformity of the display brightness of the display panel, and improve the display effect of the display panel.

[0138] In some possible embodiments, the thickness of the auxiliary refractive layer 520 is less than or equal to the thickness of the high-refractive layer 500.

[0139] For example, the thickness of the auxiliary refractive layer 520 can be greater than the thickness of the high-refractive layer 500, which can increase the area of the contact surface between the auxiliary refractive layer 520 and the high-refractive layer 500, increase the number of refractions of the light inside the packaging layer 400, and improve the adjustment capability of the packaging layer 400 on the exit angle of the light.

[0140] By setting the thickness of the auxiliary refractive layer 520 to be less than or equal to the thickness of the high-refractive layer 500, the light incident on the auxiliary refractive layer 520 can be refracted at the contact surface between the auxiliary refractive layer 520 and the high-refractive layer 500, which can increase the number of refractions of the light inside the packaging layer 400, improve the adjustment capability of the packaging layer 400 on the exit angle of the light, increase the display viewing angle of the display panel, and improve the display effect of the display panel.

[0141] In some possible embodiments, the auxiliary refractive layer 520 is surrounded by the edge of the substrate layer 100 on which the edge of the auxiliary refractive layer 520 close to one end of the substrate layer 100 is orthogonally projected.

[0142] By setting the auxiliary refractive layer 520 to be surrounded by the edge of the substrate layer 100 on which the edge of the auxiliary refractive layer 520 close to one end of the substrate layer 100 is orthogonally projected, the light incident amount in the auxiliary refractive layer 520 can be improved, the light emitted by the light-emitting device in the light-emitting layer 300 can be incident on the high-refractive layer 500 through the auxiliary refractive layer 520, and the light can be refracted once at the contact surface between the auxiliary refractive layer 520 and the high-refractive layer 500, which can adjust the incident angle of the light on the low-refractive layer 600, improve the adjustment capability of the packaging layer 400 on the exit angle of the light, increase the display viewing angle of the display panel, and improve the display effect of the display panel.

[0143] In some possible embodiments, the edge of the high-refractive layer 500 close to one end of the substrate layer 100 is orthogonally projected on the edge of the substrate layer 100 on which the edge of the auxiliary refractive layer 520 close to one end of the substrate layer 100 is orthogonally projected.

[0144] By setting the edge of the high-refractive layer 500 close to one end of the substrate layer 100 to be orthogonally projected on the edge of the substrate layer 100 on which the edge of the auxiliary refractive layer 520 close to one end of the substrate layer 100 is orthogonally projected, the light emitted by the light-emitting device in the light-emitting layer 300 can be incident on the high-refractive layer 500 through the auxiliary refractive layer 520, the light can be refracted once at the contact surface between the auxiliary refractive layer 520 and the high-refractive layer 500, which can adjust the incident angle of the light on the low-refractive layer 600, increase the display viewing angle of the display panel, and improve the display effect of the display panel.

[0145] In some possible implementation manners, at least one contact surface of the high-refractive layer 500 and the low-refractive layer 600 is a curved surface, and an angle between a line connecting at least two points on the curved surface and a thickness direction is an acute angle.

[0146] Figure 12 Another schematic partial structural diagram of a display panel is provided in some embodiments of the present application. As shown in Figure 12 the display panel includes a substrate layer 100, a pixel definition layer 200, a light-emitting layer 300, and an encapsulation layer 400 including a high-refractive layer 500 and a low-refractive layer 600. A contact surface of the high-refractive layer 500 and the low-refractive layer 600 is a curved surface, and there are an A point and a B point on the curved surface, and an angle between a line connecting the A point and the B point and a thickness direction is an acute angle.

[0147] By setting at least one contact surface of the high-refractive layer 500 and the low-refractive layer 600 as a curved surface, and an angle between a line connecting at least two points on the curved surface and a thickness direction as an acute angle, light can be uniformly dispersed through the curved contact surface of the high-refractive layer 500 and the low-refractive layer 600, the uniformity of display brightness of the display panel is improved, and the display effect of the display panel is improved.

[0148] In some possible implementation manners, the encapsulation layer 400 further includes at least two inorganic layers, and the at least one high-refractive layer 500 and the at least one low-refractive layer 600 are arranged between the two inorganic layers.

[0149] It should be noted that if the light-emitting device is directly in a water-oxygen environment, the light-emitting device will be corroded, the performance of the light-emitting device will be affected, and the service life of the display panel will be shortened. By arranging the at least one high-refractive layer 500 and the at least one low-refractive layer 600 between the two inorganic layers, the external water-oxygen environment can be isolated by the inorganic layers, and the light-emitting device is prevented from being directly in the water-oxygen environment, thereby prolonging the service life of the light-emitting device and the display panel.

[0150] In some possible implementation manners, the at least one high-refractive layer 500 includes an organic material.

[0151] It should be noted that the hardness of the organic material is relatively high, and the organic high-refractive layer 500 can effectively protect the light-emitting device in the light-emitting layer, reduce damage to the light-emitting device caused by external impact, improve the safety performance of the display panel, and prolong the service life of the display panel.

[0152] In some possible implementation manners, the at least one low-refractive layer 600 includes an organic material.

[0153] By setting the organic low-refractive layer 600, the light-emitting device in the light-emitting layer can be effectively protected, damage to the light-emitting device caused by external impact can be reduced, the safety performance of the display panel can be improved, and the service life of the display panel can be prolonged.

[0154] In a second aspect, the present application provides a display device, comprising the display panel according to any one of the first aspect.

[0155] Figure 13 A schematic structural diagram of a display device provided by the present application is shown in FIG. 1. As shown in the figure, the display device comprises a display panel 1000. Figure 13

[0156] The encapsulation layer 400 is provided with at least two refractive layers with different refractive indexes. In the process of light exiting the encapsulation layer 400, the light will pass through the refractive layers with different refractive indexes in sequence, and the refractive index of the refractive layers will change at the interface of the refractive layers with different refractive indexes, so as to change the propagation direction of the light and achieve the effect of diverging the light. In addition, by changing the shape of the refractive layer, the contact surface of the refractive layer with different refractive indexes and the thickness direction form an angle, or are parallel to the thickness direction, which can further increase the exit angle of the light, and can also reduce the reflection times of the light in the encapsulation layer 400. The light can exit at the contact surface which is at an angle with the thickness direction or parallel to the thickness direction, which can reduce the loss of the light, can increase the displayable angle of the display panel, can improve the uniformity of the display brightness of the display panel at each viewing angle, and can improve the display effect of the display picture, so as to improve the display effect of the display device.

[0157] It should be noted that the display device provided by the present application can include a smart phone, a tablet computer, a notebook computer, a television and a smart wearable display device, and the smart wearable display device can include a smart watch, and the present application is not limited in this regard.

[0158] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described or recorded in a certain embodiment can be referred to the related description of other embodiments.

[0159] The above embodiments are only used to illustrate the technical solutions of the present application, rather than limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some technical features. Such modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.​

Claims

1. A display panel, characterized by, The display panel comprises: a substrate layer; a pixel defining layer arranged on one side of the substrate layer, the pixel defining layer comprising a plurality of hollows, and a light-emitting layer arranged in the hollows; an encapsulation layer arranged on a side of the pixel defining layer away from the substrate layer, the encapsulation layer comprising at least two refractive layers with different refractive indexes, at least one contact surface of at least two of the refractive layers having an acute angle with the thickness direction, and / or at least one contact surface being parallel to the thickness direction; the encapsulation layer comprising at least one high-refractive layer and at least one low-refractive layer, the high-refractive layer being arranged between the low-refractive layer and the light-emitting layer, the high-refractive layer having a refractive index greater than that of the low-refractive layer; an anode layer; a cathode layer, the light-emitting layer being arranged between the anode layer and the cathode layer, the cathode layer being connected to the high-refractive layer; the high-refractive layer comprising a plurality of high-refractive structures, the high-refractive structures having a projection on the substrate layer covering the hollows; the projections of at least two of the high-refractive structures on the substrate layer not overlapping.

2. The display panel according to claim 1, wherein at least one surface of the high-refractive structure away from the substrate layer is beyond a surface of the pixel defining layer away from the substrate layer; and / or an edge of the projection of the high-refractive structure on the substrate layer encloses an edge of the projection of the hollow on the substrate layer.

3. The display panel according to claim 2, wherein the high-refractive structure comprises a first structure part and a second structure part, the first structure part is arranged in the hollow, and the second structure part is arranged on a side of the first structure part away from the substrate layer; a side surface of the second structure part in the thickness direction has an angle of inclination, the angle of inclination being a right angle or an acute angle; and / or an angle between a surface of the second structure part away from the substrate layer and the thickness direction is an acute angle.

4. The display panel according to claim 3, wherein in a case where the projection of the high-refractive layer on the substrate layer is a polygon, at least two side surfaces of the second structure part have equal angles with the thickness direction; and / or an angle of inclination of a side surface of the second structure part away from the substrate layer is greater than an angle of inclination of a side surface of the second structure part close to the substrate layer.

5. The display panel according to claim 3, wherein an edge of the projection of the second structure part on the substrate layer encloses an edge of the projection of the first structure part on the substrate layer, or an edge of the projection of the first structure part on the substrate layer coincides with an edge of the projection of the second structure part on the substrate layer. an edge of the projection of a surface of the second structure part away from the substrate layer on the substrate layer coincides with an edge of the projection of a surface of the first structure part close to the substrate layer on the substrate layer. The display panel further comprises: ​ 6. The display panel of claim 3, wherein, ​ 7. The display panel of claim 1, wherein, ​ the edge of the high-refractive layer on the substrate layer in orthographic projection encloses the edge of the anode layer on the substrate layer in orthographic projection, or the edge of the high-refractive layer on the substrate layer in orthographic projection coincides with the edge of the anode layer on the substrate layer in orthographic projection, and the edge of the light-emitting layer on the substrate layer in orthographic projection encloses the edge of the anode layer on the substrate layer in orthographic projection. Or, the edge of the high-refractive layer on the substrate layer in orthographic projection encloses the edge of the anode layer on the substrate layer in orthographic projection, or the edge of the high-refractive layer on the substrate layer in orthographic projection coincides with the edge of the anode layer on the substrate layer in orthographic projection, and the edge of the light-emitting layer on the substrate layer in orthographic projection encloses the edge of the anode layer on the substrate layer in orthographic projection.

8. The display panel of claim 7, wherein the edge of the at least one surface of the high-refractive layer perpendicular to the thickness direction on the substrate layer in orthographic projection encloses the edge of the anode layer on the substrate layer in orthographic projection, or the edge of the at least one surface of the high-refractive layer perpendicular to the thickness direction on the substrate layer in orthographic projection coincides with the edge of the anode layer on the substrate layer in orthographic projection.

9. The display panel of claim 1, wherein the encapsulation layer further comprises an auxiliary refractive layer, the auxiliary refractive layer is disposed between the high-refractive layer and the light-emitting layer, an included angle between at least one contact surface of the auxiliary refractive layer and the thickness direction is an acute angle, and / or at least one contact surface is parallel to the thickness direction; a refractive index of the auxiliary refractive layer is different from a refractive index of the high-refractive layer.

10. The display panel of claim 9, wherein the refractive index of the auxiliary refractive layer is greater than the refractive index of the high-refractive layer.

11. The display panel of claim 10, wherein the edge of the high-refractive layer on the substrate layer in orthographic projection encloses the edge of the auxiliary refractive layer on the substrate layer in orthographic projection; and / or a thickness of the auxiliary refractive layer is less than or equal to a thickness of the high-refractive layer.

12. The display panel of claim 10, wherein the edge of the auxiliary refractive layer on the substrate layer in orthographic projection near one end of the auxiliary refractive layer close to the substrate layer encloses the edge of the auxiliary refractive layer on the substrate layer in orthographic projection far from one end of the auxiliary refractive layer close to the substrate layer; and / or the edge of the high-refractive layer on the substrate layer in orthographic projection near one end of the high-refractive layer close to the substrate layer coincides with the edge of the auxiliary refractive layer on the substrate layer in orthographic projection near one end of the auxiliary refractive layer close to the substrate layer.

13. The display panel of claim 1, wherein at least one contact surface of the high-refractive layer and the low-refractive layer is a curved surface, and an included angle between a line connecting at least two points on the curved surface and the thickness direction is an acute angle.

14. The display panel of claim 1, wherein the encapsulation layer further comprises at least two inorganic layers, at least one high-refractive layer and at least one low-refractive layer are disposed between the two inorganic layers; and / or at least one high-refractive layer comprises an organic material; and / or, At least one of the low-refraction layers comprises an organic material.

15. A display device comprising: Comprising: The display panel of any one of claims 1 to 14.

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