Display panel and display device

Abstract

The present application provides a display panel and a display device, which relate to the field of display technologies. The display panel includes a substrate and an array layer. The surface of the display panel on the side close to the light-emitting surface is the first surface. The array layer includes a first groove and a second groove. A first light-emitting unit is disposed in the first groove, and a second light-emitting unit is disposed in the second groove. In the direction perpendicular to the plane of the display panel, the distance from the surface of the first light-emitting unit close to the first surface to the first surface is h1, and the distance from the surface of the second light-emitting unit close to the substrate to the first surface is h2, where h1 < h2, so that the optical path of the first light-emitting unit is less than that of the second light-emitting unit, reducing the light loss of the first light-emitting unit, thereby being able to improve the luminous efficiency of the first light-emitting unit, making the luminous efficiency of the first light-emitting unit reach balance with that of the second light-emitting unit, thereby being able to improve the brightness uniformity of the display panel, and further improving the display effect.

Description

Technical Field

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

[0002] With the continuous development of display technology, display panel manufacturing technology has also become mature. Various types of display panels have emerged one after another and have developed rapidly, such as organic light-emitting diode display panels (OLED), liquid crystal display panels (LCD) and micro light-emitting diode display panels (Micro LED).

[0003] Typically, the unit pixels of a self-luminous display panel include a red light-emitting unit, a green light-emitting unit, and a blue light-emitting unit, wherein the wavelengths of the red, green, and blue primary color light-emitting units are different, and the semiconductor material properties are also different, resulting in a large difference in the light output efficiency of the red, green, and blue chips with changes in current, making the brightness of the light emitted by pixels of different colors different, and the display panel will have brightness and color variations, and serious color deviation. Among the red, green, and blue light-emitting units, the red light-emitting unit has the lowest luminous efficiency. Therefore, how to improve the luminous efficiency of the red light-emitting unit and balance the luminous efficiency of the red, green, and blue primary color light-emitting units has become an urgent problem to be solved. Summary of the invention

[0004] In view of this, the present application provides a display panel and a display device, in which the distance h1 from one side of the light-emitting surface of the first light-emitting unit to the first surface is smaller than the distance h2 from one side of the light-emitting surface of the second light-emitting unit to the first surface, so that the optical path of the first light-emitting unit is smaller than the optical path of the second light-emitting unit, and the light loss of the first light-emitting unit is reduced, thereby improving the luminous efficiency of the first light-emitting unit, and balancing the luminous efficiency of the first light-emitting unit with the luminous efficiency of the second light-emitting unit, thereby improving the brightness uniformity of the display panel and further improving the display effect.

[0005] In order to solve the above technical problems, this application has the following technical solutions:

[0006] In a first aspect, the present application provides a display panel, comprising: a substrate and an array layer, wherein a surface of the display panel close to a light emitting surface is a first surface;

[0007] The array layer comprises a first groove and a second groove, wherein a first light emitting unit is disposed in the first groove, and a second light emitting unit is disposed in the second groove, wherein a wavelength of the first light emitting unit is greater than a wavelength of the second light emitting unit;

[0008] In a direction perpendicular to the plane where the display panel is located, the distance from the side surface of the first light-emitting unit close to the first surface to the first surface is h1, and the distance from the side surface of the second light-emitting unit close to the first surface to the first surface is h2, where h1 <h2。

[0009] In a second aspect, the present application also provides a display device, including a display panel, which is the display panel provided by the present application.

[0010] Compared with the related art, the display panel and display device provided by the present application achieve at least the following beneficial effects:

[0011] The display panel and display device provided in the present application are provided with a groove on the array layer, wherein the first light-emitting unit is located in the first groove, and the second light-emitting unit is located in the second groove, and the distance from the surface of the first light-emitting unit close to the substrate to the first surface is h1, and the distance from the surface of the second light-emitting unit close to the substrate to the first surface is h2. By providing different depths of the first groove and the second groove along the plane perpendicular to the display panel, it is ensured that the distance h1 from the side of the light-emitting surface of the first light-emitting unit to the first surface is smaller than the distance h2 from the side of the light-emitting surface of the second light-emitting unit to the first surface, so that the optical path of the first light-emitting unit is smaller than the optical path of the second light-emitting unit, and the light loss of the first light-emitting unit is reduced, so that the light-emitting efficiency of the first light-emitting unit can be improved, and the light-emitting efficiency of the first light-emitting unit is balanced with the light-emitting efficiency of the second light-emitting unit, so that the brightness uniformity of the display panel can be improved, and then the display effect can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0013] Figure 1 Shown is a top view of a display panel provided in an embodiment of the present application;

[0014] Figure 2 The top-emitting display panel is shown in Figure 1 An AA' cross-sectional view;

[0015] Figure 3 The bottom-emitting display panel is shown in Figure 1 An AA' cross-sectional view;

[0016] Figure 4 The top-emitting display panel is shown in Figure 1 Another AA' cross-sectional view in FIG.

[0017] Figure 5The bottom-emitting display panel is shown in Figure 1 Another AA' cross-sectional view in FIG.

[0018] Figure 6 Shown is a structural schematic diagram of a retaining wall layer provided in an embodiment of the present application;

[0019] Figure 7 Shown is another structural schematic diagram of the retaining wall layer provided in an embodiment of the present application;

[0020] Figure 8 The figure shows a structural schematic diagram of the angle relationship between the opening and the groove provided in the embodiment of the present application;

[0021] Fig. 9 Another schematic structural diagram of the angle relationship between the opening and the groove provided in the embodiment of the present application is shown;

[0022] Fig.10 The figure shows a structural schematic diagram of a first groove in a top-emitting display panel provided in an embodiment of the present application;

[0023] Fig.11 The figure shows a structural schematic diagram of a first groove in a bottom-emitting display panel provided in an embodiment of the present application;

[0024] Fig.12 The top-emitting display panel is shown in Figure 1 Another AA' cross-sectional view;

[0025] Fig.13 The bottom-emitting display panel is shown in Figure 1 Another AA' cross-sectional view;

[0026] Fig.14 The figure shows a structural schematic diagram of providing a reflective metal on the side wall of a groove provided by an embodiment of the present application;

[0027] Fig.15 Another structural schematic diagram of providing a reflective metal on the side wall of a groove provided in an embodiment of the present application is shown;

[0028] Fig.16 The bottom-emitting display panel is shown in Figure 1 Another AA' cross-sectional view;

[0029] Fig.17 Another schematic diagram of the structure of the first groove in the top-emitting display panel provided in an embodiment of the present application is shown;

[0030] Fig.18 FIG. 1 is another structural schematic diagram of a first groove in a top-emitting display panel provided in an embodiment of the present application;

[0031] Fig.19 FIG. 1 is another schematic diagram of the structure of the first groove in the top-emitting display panel provided in an embodiment of the present application;

[0032] Fig. 20 Shown is a schematic structural diagram of a display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0033] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different nouns to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. As mentioned throughout the specification and claims, "including" is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect. The subsequent description of the specification is a preferred embodiment of the present application, but the description is for the purpose of illustrating the general principles of the present application, and is not used to limit the scope of the present application. The scope of protection of the present application shall be subject to that defined in the attached claims. Among them, the similarities between the various embodiments are not repeated one by one.

[0034] The following is a detailed description with reference to the accompanying drawings and specific embodiments.

[0035] Figure 1 FIG. 1 is a top view of a display panel 100 provided in an embodiment of the present application. Figure 2 The top-emitting display panel 100 is shown in FIG. Figure 1 An AA' cross-sectional view in Figure 3 The bottom-emitting display panel 100 is shown in FIG. Figure 1 For an AA' cross-section diagram, please refer to Figure 1-Figure 3 The display panel 100 provided in the embodiment of the present application includes: a substrate 10 and an array layer 20, and a surface of the display panel 100 close to the light emitting surface is a first surface 101;

[0036] The array layer 20 includes a first groove 21 and a second groove 22, wherein a first light emitting unit 23 is disposed in the first groove 21, and a second light emitting unit 24 is disposed in the second groove 22, wherein the wavelength of the first light emitting unit 23 is greater than the wavelength of the second light emitting unit 24;

[0037] In a direction perpendicular to the plane where the display panel 100 is located, the distance from the side surface of the first light emitting unit 23 close to the first surface 101 to the first surface 101 is h1, and the distance from the side surface of the second light emitting unit 24 close to the first surface 101 to the first surface 101 is h2, where h1 <h2。

[0038] Specifically, please refer to Figure 1 and Figure 2 The display panel 100 provided in this embodiment includes a substrate 10 and an array layer 20, wherein the array layer 20 includes a first groove 21 and a second groove 22, a first light-emitting unit 23 is arranged in the first groove 21, and a second light-emitting unit 24 is arranged in the second groove 22, and the wavelength of the first light-emitting unit 23 is greater than the wavelength of the second light-emitting unit 24. Here, the first light-emitting unit 23 can be, for example, a red light-emitting unit, and the second light-emitting unit 24 can be, for example, a green or blue light-emitting unit, and the light-emitting efficiency of the first light-emitting unit 23 is lower than the light-emitting efficiency of the second light-emitting unit 24.

[0039] Please continue to refer to Figure 2 and Figure 3 The surface of the display panel 100 close to the light emitting surface is the first surface 101. Figure 2 The display panel 100 shown in the figure has light emitting from the top surface, and the first surface 101 is located on the side of the array layer 20 away from the substrate 10. Figure 3 The display panel 100 shown is a bottom-emitting display panel, and the first surface 101 is located on the side of the substrate 10 away from the array layer 20. In a direction perpendicular to the plane where the display panel 100 is located, the distance from the side of the first light-emitting unit 23 close to the first surface to the first surface 101 is h1, and the distance from the side of the second light-emitting unit 24 close to the first surface 101 to the first surface 101 is h2. Regardless of whether it is a bottom-emitting display panel 100 or a top-emitting display panel 100, h1 is smaller than h2.

[0040] It should be noted that when the display panel is a bottom-emitting display panel, the wiring of the array layer 20 does not overlap with the light-emitting unit in the direction perpendicular to the display panel, and the metal wiring of the array layer 20 will not be blocked by the bottom-emitting light-emitting unit, thereby ensuring normal light emission of the display panel.

[0041] In the present application, a groove is arranged on the array layer 20, the first light emitting unit 23 is located in the first groove 21, the second light emitting unit 24 is located in the second groove 22, the distance from the side surface of the first light emitting unit 23 close to the first surface 101 to the first surface 101 is h1, and the distance from the side surface of the second light emitting unit 24 close to the first surface 101 to the first surface 101 is h2. By setting the first groove 21 and the second groove 22 to have different depths perpendicular to the plane where the display panel 100 is located, it is ensured that the distance h1 from one side of the light emitting surface of the first light emitting unit 23 to the first surface 101 is smaller than the distance h2 from one side of the light emitting surface of the second light emitting unit 24 to the first surface 101, so that the optical path of the first light emitting unit 23 is smaller than the optical path of the second light emitting unit 24, and the light loss of the first light emitting unit 23 is reduced, so that the light emitting efficiency of the first light emitting unit 23 can be improved, and the light emitting efficiency of the first light emitting unit 23 and the light emitting efficiency of the second light emitting unit 24 are balanced, so that the brightness uniformity of the display panel 100 can be improved, and then the display effect can be improved.

[0042] It should be noted that Figure 2 and Figure 3 It is only a schematic illustration of the positions of the first light-emitting unit 23 and the second light-emitting unit 24 on the array layer 20 , and does not represent the specific size and structure of the first light-emitting unit 23 and the second light-emitting unit 24 , nor the specific size and number of the first groove 21 and the second groove 22 . Figure 2 and Figure 3 Here, h1 and h2 are only used to schematically illustrate that the distance from the light-emitting surface of the first light-emitting unit 23 to the first surface 101 is smaller than the distance from the light-emitting surface of the second light-emitting unit 24 to the first surface 101, and do not represent the actual distances from the first light-emitting unit 23 and the second light-emitting unit 24 to the first surface 101.

[0043] also, Figure 2 and Figure 3 The first surface 101 indicated in the figure is only to illustrate that the first surface 101 is located on the side of the display panel 100 close to the light emitting surface, and does not mean that the side of the array layer 20 away from the substrate 10 is the first surface 101, nor does it mean that the side of the substrate 10 away from the array layer 20 is the first surface 101. In the actual structure of the display panel 100, in addition to the substrate 10 and the array layer 20 shown in the figure, other film layers are also included, such as an organic layer, a cover plate, etc. When the display panel 100 includes a cover plate, the surface of the cover plate away from the substrate 10 is the first surface 101.

[0044] Optionally, please continue to refer to Figure 2 and Figure 3, along the first direction, the bottom width of the first groove 21 is L1, the bottom width of the second groove 22 is L2, L1=L2; wherein the first direction is the direction from the first groove 21 to the second groove 22. For details, please continue to refer to Figure 2 and Figure 3 , the direction from the first groove 21 to the second groove 22 is the first direction. In this embodiment, along the first direction, the bottom width L1 of the first groove 21 is equal to the bottom width L2 of the second groove 22. Here, the bottom of the first groove 21 and the bottom of the second groove 22 refer to the side of the groove away from the light emitting surface. Figure 2 In the embodiment, when light is emitted from the top surface of the display panel 100, the bottom of the first groove 21 and the second groove 22 refers to the side of the groove close to the substrate 10. Figure 3 In the embodiment, when light is emitted from the bottom surface of the display panel 100 , the bottom of the first groove 21 and the second groove 22 refers to the side of the groove away from the substrate 10 .

[0045] In the present embodiment, the bottom width L1 of the first groove 21 is set to be equal to the bottom width L2 of the second groove 22. In this way, when the light extraction efficiency of the first light-emitting unit 23 and the second light-emitting unit 24 is uneven, under the premise that the bottom widths are equal, only the side wall inclination angle of the first groove 21 or the second groove 22 is adjusted to balance the light extraction efficiency of the first light-emitting unit 23 or the second light-emitting unit 24 without considering the influence of the bottom width change on the light extraction efficiency, which is beneficial to reduce the difficulty of manufacturing the display panel.

[0046] It should be noted that Figure 2 and Figure 3 L1 and L2 shown in the figure are only for schematically illustrating that the bottom width of the first groove 21 is equal to the bottom width of the second groove 22, and do not represent the actual width of the bottom of the groove. In practical applications, the width of the bottom of the groove can be specifically set according to actual needs, and this application does not limit this.

[0047] Optionally, Figure 4 The top-emitting display panel 100 is shown in FIG. Figure 1 Another AA' cross-section diagram in Figure 5 The bottom-emitting display panel 100 is shown in FIG. Figure 1 For another AA' cross-section diagram, please refer to Figure 4 and Figure 5 , along the first direction, the width of the first groove 21 close to the light emitting surface is L3, and the width of the second groove 22 close to the light emitting surface is L4, wherein L3>L4.

[0048] Specifically, since the wavelength of the first light emitting unit 23 is greater than that of the second light emitting unit 24, the light emitting efficiency of the first light emitting unit 23 is relatively low. In order to improve the light emitting efficiency of the first light emitting unit 23, the light emitting efficiency of the first light emitting unit 23 is balanced with that of the second light emitting unit 24. Figure 4 and Figure 5 In this embodiment, along the first direction, the width of the first groove 21 close to the light emitting surface is greater than the width of the second groove 22 close to the light emitting surface, so that the opening of the first light emitting unit 23 is enlarged. In this way, the light emitting area of ​​the first light emitting unit 23 can be increased, and the forward light intensity of the first light emitting unit 23 can be improved, thereby improving the luminous efficiency of the first light emitting unit 23, and balancing the luminous efficiency of the first light emitting unit 23 with the luminous efficiency of the second light emitting unit 24, thereby providing the display panel 100 with uniform brightness, thereby improving the display effect.

[0049] It should be noted that Figure 4 and Figure 5 L3 and L4 shown in the figure are only for schematically illustrating that the width of the first groove 21 close to the light emitting surface is greater than the width of the second groove 22 close to the light emitting surface, and do not represent the actual width of the groove. In practical applications, the width of the groove can be set according to actual needs, and this application does not make any specific limitation on this.

[0050] In addition, the width of the first groove 21 on the side close to the light-emitting surface is greater than the width of the second groove 22 on the side close to the light-emitting surface. This is only an implementation in this embodiment and is not a limitation of the present application. In other embodiments, the width of the first groove 21 on the side close to the light-emitting surface may also be equal to the width of the second groove 22 on the side close to the light-emitting surface.

[0051] Optionally, refer to Figure 4 and Figure 5 The extension surface of the bottom of the first groove 21 along the first direction is the first extension surface 25, and the extension surface of the bottom of the second groove 22 along the first direction is the second extension surface 26; the angle between the side wall 210 of the first groove 21 and the first extension surface 25 is θ3, and the angle between the side wall of the second groove 22 and the second extension surface 26 is θ4, wherein θ3≤θ4<90°.

[0052] For details, please continue to refer to Figure 4 and Figure 5 The bottom of the first groove 21 extends along the first direction to form a first extension surface 25, and the bottom of the second groove 22 extends along the first direction to form a second extension surface 26, wherein the bottom of the first groove 21 and the bottom of the second groove 22 refer to the side of the groove away from the light emitting surface. Figure 4In the embodiment, when light is emitted from the top surface of the display panel 100, the bottom of the first groove 21 and the second groove 22 refers to the side of the groove close to the substrate 10. Figure 5 In the embodiment, when light is emitted from the bottom surface of the display panel 100 , the bottom of the first groove 21 and the second groove 22 refers to the side of the groove away from the substrate 10 .

[0053] In this embodiment, the angle θ4 between the side wall of the second groove 22 and the second extension surface 26 is set to be less than 90°, so that the opening of the second groove 22 close to the light emitting surface is larger than the bottom opening, ensuring that light can be emitted to the light emitting surface of the display panel 100. In addition, since the bottom widths of the first groove 21 and the second groove 22 are the same, when the inclination angle of the first groove 21 decreases, its width close to the light emitting surface will increase accordingly. Therefore, when the angle θ3 between the side wall 210 of the first groove 21 and the first extension surface 25 is less than or equal to the angle θ4 between the side wall of the second groove 22 and the second extension surface 26, the width of the first groove 21 close to the light emitting surface is greater than or equal to the width of the second groove 22 close to the light emitting surface, that is, the opening of the first groove 21 is greater than or equal to the opening of the second groove 22. In this way, the light emitting area of ​​the first light-emitting unit 23 can be increased, and the forward light emitting intensity of the first light-emitting unit 23 can be improved, thereby improving the light emitting efficiency of the first light-emitting unit 23, and balancing the light emitting efficiency of the first light-emitting unit 23 with the light emitting efficiency of the second light-emitting unit 24, thereby improving the brightness uniformity of the display panel 100 and further improving the display effect.

[0054] It should be noted that Figure 4 and Figure 5 θ3 and θ4 shown in the figure are only for schematically illustrating that the inclination angle of the side wall 210 of the first groove 21 is smaller than the inclination angle of the side wall of the second groove 22, and do not represent the actual structure of the groove. In practical applications, the structure of the groove can be set according to actual needs, and this application does not make specific limitations on this.

[0055] Optionally, Figure 6 FIG. 1 is a schematic diagram of a structure of a retaining wall layer 30 provided in an embodiment of the present application. Figure 7 FIG. 1 is another schematic diagram of the structure of the retaining wall layer 30 provided in the embodiment of the present application. Figure 6 and Figure 7The display panel 100 provided in the embodiment of the present application also includes a blocking wall layer 30, the blocking wall layer 30 includes an opening 31 and a blocking wall 34, wherein the opening 31 includes a first opening 32 and a second opening 33, and the first opening 32 and the second opening 33 both penetrate the blocking wall layer 30 along a direction perpendicular to the plane where the display panel 100 is located; the orthographic projection of the first groove 21 on the plane where the substrate 10 is located is located within the orthographic projection range of the first opening 32 on the plane where the substrate 10 is located, and the orthographic projection of the second groove 22 on the plane where the substrate 10 is located is located within the orthographic projection range of the second opening 33 on the plane where the substrate 10 is located.

[0056] Specifically, please refer to Figure 6 and Figure 7 The display panel 100 further includes a barrier layer 30, the barrier layer 30 includes a first opening 32, a second opening 33, and a barrier 34 between the first opening 32 and the second opening 33. The orthographic projection of the first groove 21 on the plane where the substrate 10 is located is located within the orthographic projection range of the first opening 32 on the plane where the substrate 10 is located, and the orthographic projection of the second groove 22 on the plane where the substrate 10 is located is located within the orthographic projection range of the second opening 33 on the plane where the substrate 10 is located. The light emitted by the first light-emitting unit 23 and the second light-emitting unit 24 passes through the first opening 32 and the second opening 33 to reach the light-emitting surface of the display panel 100, respectively. In order to prevent the barrier layer 30 from blocking the propagation of light, the first opening 32 and the second opening 33 both penetrate the barrier layer 30 in a direction perpendicular to the plane where the display panel 100 is located. In this way, there is no barrier 34 to block the light on the light propagation path, which is conducive to reducing the amount of light loss and improving the light extraction efficiency, thereby improving the display effect of the display panel 100.

[0057] Please refer to Figure 7 When the display panel 100 emits light from the bottom surface, a cover plate 40 is provided on the side away from the first surface 101, and the cover plate 40 is an opaque cover plate. The display panel also includes a first reflective layer 41 and a second reflective layer 42. The orthographic projection of the first reflective layer 41 on the cover plate 40 overlaps with the orthographic projection of the first groove 21 on the cover plate 40, and the orthographic projection of the second reflective layer 42 on the cover plate 40 overlaps with the orthographic projection of the second groove 22 on the cover plate 40. The light of the light-emitting unit is reflected by the first reflective layer 41 and the second reflective layer 42, so that more light is propagated in the light-emitting direction, thereby reducing the amount of light loss. In addition, a retaining wall 34 can be provided on the side of the array layer 20 away from the first surface 101 to further prevent light crosstalk.

[0058] Optionally, please continue to refer to Figure 6 and Figure 7The retaining wall 34 includes a first bottom surface 341 away from the first surface 101, the angle between the side wall of the first opening 32 and the first bottom surface 341 is θ1, and the angle between the side wall of the second opening 33 and the first bottom surface 341 is θ2; wherein θ1=θ2.

[0059] Specifically, please refer to Figure 6 and Figure 7 , the side of the retaining wall 34 away from the first surface 101 is the first bottom surface 341, the angle θ1 between the side wall of the first opening 32 and the first bottom surface 341 is equal to the angle θ2 between the side wall of the second opening 33 and the first bottom surface 341, that is, the side walls of the first opening 32 and the second opening 33 have the same inclination angle, and the first opening 32 and the second opening 33 have the same degree of influence on the light. When performing light balance, there is no need to consider the different influences on the light due to different openings, which is conducive to reducing the difficulty of manufacturing the display panel 100. In addition, when the side walls of the first opening 32 and the second opening 33 have the same inclination angle, the first opening 32 and the second opening 33 can be formed in one etching process, which is conducive to reducing the process and further reducing the complexity of manufacturing the display panel.

[0060] It should be noted that Figure 6 and Figure 7 θ1 and θ2 shown in the figure are only for schematically illustrating that the side wall inclination angles of the first opening 32 and the second opening 33 are the same, and do not represent the actual structure of the first opening 32 and the second opening 33. In actual applications, the structure of the first opening 32 and the second opening 33 can be set according to actual needs, and this application does not make any specific limitation on this.

[0061] Optionally, Figure 8 The figure shows a structural schematic diagram of the angle relationship between the opening and the groove provided in the embodiment of the present application. Fig. 9 Another schematic diagram of the angle relationship between the opening and the groove provided in the embodiment of the present application is shown. Figure 8 and Fig. 9 The extension surface of the bottom of the first groove 21 along the first direction is the first extension surface 25, and the extension surface of the bottom of the second groove 22 along the first direction is the second extension surface 26; the angle between the side wall 210 of the first groove 21 and the first extension surface 25 is θ3, and the angle between the side wall of the second groove 22 and the second extension surface 26 is θ4; wherein the first direction is the direction from the first groove 21 to the second groove 22; at least part of the side walls of the first opening 32 and the second opening 33 are provided with a reflective layer 35, θ3<θ1<θ4.

[0062] For details, please refer to Figure 8 and Fig. 9, the direction from the first groove 21 to the second groove 22 is the first direction. In this embodiment, along the first direction, the extension surface of the bottom of the first groove 21 along the first direction is the first extension surface 25, and the extension surface of the bottom of the second groove 22 along the first direction is the second extension surface 26, wherein the bottom of the first groove 21 and the second groove 22 refers to the side of the groove away from the light emitting surface. Figure 8 In the embodiment, when light is emitted from the top surface of the display panel 100, the bottom of the first groove 21 and the second groove 22 refers to the side of the groove close to the substrate 10. Fig. 9 In the embodiment, when light is emitted from the bottom surface of the display panel 100 , the bottom of the first groove 21 and the second groove 22 refers to the side of the groove away from the substrate 10 .

[0063] In this embodiment, θ3<θ1<θ4 is set. Figure 8 and Fig. 9 As shown, when the angle θ3 between the side wall 210 of the first groove 21 and the first extension surface 25 is smaller than the angle θ4 between the side wall of the second groove 22 and the second extension surface 26, the width of the first groove 21 close to the light emitting surface is greater than or equal to the width of the second groove 22 close to the light emitting surface, and the opening of the first groove 21 is larger than the opening of the second groove 22. In this way, the light emitting area of ​​the first light emitting unit 23 can be increased, and the forward light emitting intensity of the first light emitting unit 23 can be improved, thereby improving the light emitting efficiency of the first light emitting unit 23.

[0064] In this embodiment, a reflective layer 35 is disposed on the side wall of the first opening 32 and the side wall of the second opening 33. The reflective layer 35 can reflect the light emitted by the light emitting unit to reduce the light scattering, thereby improving the light extraction efficiency of the light emitting unit, which is beneficial to improving the display brightness of the display panel 100 and improving the display effect. When the reflective layer is disposed on the side wall of the first opening 32, θ3<θ1 is set, such as Figure 8 and Fig. 9 As shown, the connection between the first groove 21 and the first opening 32 forms a convex structure, and the reflective layer 35 can converge the light emitted by the first light-emitting unit 23, which is beneficial to reduce the light crosstalk between the first light-emitting unit 23 and the second light-emitting unit 24.

[0065] In this embodiment, θ1<θ4. Since the inclination angle θ1 of the side wall of the first opening 32 and the inclination angle θ2 of the side wall of the second opening 33 are equal, θ2<θ4. The opening of the second groove 22 close to the light emitting surface is smaller than the opening of the second opening 33 close to the light emitting surface. Figure 8 and Fig. 9 As shown, along the light emitting direction of the second light emitting unit 24, the light emitting area of ​​the second light emitting unit 24 gradually increases, which is beneficial to improving the forward light emitting intensity of the second light emitting unit 24, thereby improving the light emitting efficiency of the second light emitting unit 24, which is beneficial to improving the brightness of the display panel 100 and further improving the display effect.

[0066] Optionally, refer to Figure 6 and Figure 7 The extension surface of the bottom of the first groove 21 along the first direction is the first extension surface 25, and the extension surface of the bottom of the second groove 22 along the first direction is the second extension surface 26; the angle between the side wall 210 of the first groove 21 and the first extension surface 25 is θ3, and the angle between the side wall of the second groove 22 and the second extension surface 26 is θ4; wherein the first direction is the direction from the first groove 21 to the second groove 22; wherein θ1≤θ3≤θ4<90°.

[0067] Specifically, please refer to Figure 6 and Figure 7 , the direction from the first groove 21 to the second groove 22 is the first direction. In this embodiment, along the first direction, the extension surface of the bottom of the first groove 21 along the first direction is the first extension surface 25, and the extension surface of the bottom of the second groove 22 along the first direction is the second extension surface 26, wherein the bottom of the first groove 21 and the second groove 22 refers to the side of the groove away from the light emitting surface. Figure 6 In the embodiment, when light is emitted from the top surface of the display panel 100, the bottom of the first groove 21 and the second groove 22 refers to the side of the groove close to the substrate 10. Figure 7 In the embodiment, when light is emitted from the bottom surface of the display panel 100 , the bottom of the first groove 21 and the second groove 22 refers to the side of the groove away from the substrate 10 .

[0068] In this embodiment, θ1≤θ3≤θ4<90° is set. Figure 6 and Figure 7 As shown, when the angle θ3 between the side wall 210 of the first groove 21 and the first extension surface 25 is less than or equal to the angle θ4 between the side wall of the second groove 22 and the second extension surface 26, the width of the first groove 21 close to the light-emitting surface is greater than or equal to the width of the second groove 22 close to the light-emitting surface, and the opening of the first groove 21 is larger than the opening of the second groove 22. In this way, the light-emitting area of ​​the first light-emitting unit 23 can be increased, and the forward light-emitting intensity of the first light-emitting unit 23 can be improved, thereby improving the light-emitting efficiency of the first light-emitting unit 23.

[0069] The inclination angle θ1 of the side wall of the first opening 32 is equal to the inclination angle θ2 of the side wall of the second opening 33. When θ1≤θ3≤θ4, the opening of the first groove 21 close to the light-emitting surface is smaller than the opening of the first opening 32 close to the light-emitting surface, and the opening of the second groove 22 close to the light-emitting surface is smaller than the opening of the second opening 33 close to the light-emitting surface. Figure 6 and Figure 7As shown, along the light emitting direction of the first light emitting unit 23 and the second light emitting unit 24, the light emitting area of ​​the first light emitting unit 23 and the second light emitting unit 24 gradually increases, which is beneficial to improving the forward light emitting intensity of the first light emitting unit 23 and the second light emitting unit 24, thereby improving the luminous efficiency of the first light emitting unit 23 and the second light emitting unit 24, which is beneficial to improving the brightness of the display panel 100, and further improving the display effect.

[0070] Optionally, refer to Figure 6-Figure 9 The extension surface of the bottom of the first groove 21 along the first direction is the first extension surface 25, and the extension surface of the bottom of the second groove 22 along the first direction is the second extension surface 26; the angle between the side wall 210 of the first groove 21 and the first extension surface 25 is θ3, and the angle between the side wall of the second groove 22 and the second extension surface 26 is θ4; wherein the first direction is the direction from the first groove 21 to the second groove 22; wherein the difference between θ1 and θ3 is equal to the difference between θ2 and θ4.

[0071] Specifically, please refer to Figure 6-Figure 9 , the direction from the first groove 21 to the second groove 22 is the first direction. In this embodiment, along the first direction, the extension surface of the bottom of the first groove 21 along the first direction is the first extension surface 25, and the extension surface of the bottom of the second groove 22 along the first direction is the second extension surface 26, wherein the bottom of the first groove 21 and the second groove 22 refers to the side of the groove away from the light emitting surface. Figure 6 In the embodiment, when light is emitted from the top surface of the display panel 100, the bottom of the first groove 21 and the second groove 22 refers to the side of the groove close to the substrate 10. Figure 7 In the embodiment, when light is emitted from the bottom surface of the display panel 100 , the bottom of the first groove 21 and the second groove 22 refers to the side of the groove away from the substrate 10 .

[0072] In the present embodiment, the difference between θ1 and θ3 is set to be equal to the difference between θ2 and θ4. When θ1 is equal to θ2, θ3 can be equal to θ4. The inclination angle of the side wall 210 of the first groove 21 is the same as the inclination angle of the side wall of the second groove 22. Then, the opening size of the first groove 21 is the same as the opening size of the second groove 22. In this way, when manufacturing the display panel 100, the first groove 21 and the second groove 22 can be formed simultaneously in one manufacturing process using the same mask plate, which is beneficial to simplify the manufacturing process and reduce the difficulty of manufacturing the display panel 100.

[0073] When θ1 is equal to θ2, θ3 may also be smaller than θ4, and the width of the first groove 21 on the side close to the light emitting surface is greater than or equal to the width of the second groove 22 on the side close to the light emitting surface, that is, the opening of the first groove 21 is larger than the opening of the second groove 22. In this way, the light emitting area of ​​the first light emitting unit 23 can be increased, and the forward light emitting intensity of the first light emitting unit 23 can be improved, thereby improving the light emitting efficiency of the first light emitting unit 23, and balancing the light emitting efficiency of the first light emitting unit 23 with the light emitting efficiency of the second light emitting unit 24, thereby improving the brightness uniformity of the display panel 100 and further improving the display effect.

[0074] Optionally, Fig.10 FIG. 2 is a schematic diagram showing a structure of a first groove 21 in a top-emitting display panel 100 provided in an embodiment of the present application. Fig.11 FIG. 2 is a schematic diagram of a structure of a first groove 21 in a bottom-emitting display panel 100 provided in an embodiment of the present application. Fig.10 and Fig.11 The side wall 210 of the first groove 21 at least includes a first side wall 212 and a second side wall 213, and the first side wall 212 is located between the second side wall 213 and the bottom of the first groove 21; the angle between the first side wall 212 and the first extension surface 25 is θ5, and the angle between the second side wall 213 and the first extension surface 25 is θ6, wherein θ5>θ6.

[0075] Specifically, please refer to Fig.10 and Fig.11 The bottom of the first groove 21 extends along the first direction as the first extension surface 25. The sidewall 210 of the first groove 21 includes a first sidewall 212 and a second sidewall 213. The first sidewall 212 is located between the second sidewall 213 and the bottom of the first groove 21. Here, the bottom of the first groove 21 refers to the side of the groove away from the light emitting surface. Fig.10 In the embodiment, when light is emitted from the top surface of the display panel 100, the bottom of the first groove 21 refers to the side of the groove close to the substrate 10. Fig.11 In the embodiment, when light is emitted from the bottom surface of the display panel 100 , the bottom of the first groove 21 refers to the side of the groove away from the substrate 10 .

[0076] In this embodiment, the included angle θ5 between the first side wall 212 and the first extension surface 25 is set to be greater than the included angle θ6 between the second side wall 213 and the first extension surface 25. Fig.10 and Fig.11As shown, along the light emitting direction of the first light emitting unit 23, the opening of the first groove 21 gradually increases, that is, the light emitting area of ​​the first light emitting unit 23 gradually increases. In this way, it is beneficial to improve the forward light intensity of the first light emitting unit 23, thereby improving the luminous efficiency of the first light emitting unit 23, making the luminous efficiency of the first light emitting unit 23 and the luminous efficiency of the second light emitting unit 24 balanced, thereby improving the brightness uniformity of the display panel 100 and improving the display effect.

[0077] Optionally, Fig.12 The top-emitting display panel 100 is shown in FIG. Figure 1 Another AA' cross-sectional view in FIG. Fig.13 The bottom-emitting display panel 100 is shown in FIG. Figure 1 Another AA' cross-section diagram in Fig.12 and Fig.13 , the opening 31 also includes a third opening 35, and the third opening 35 penetrates the barrier layer 30 along the direction perpendicular to the plane where the display panel 100 is located; the array layer 20 also includes a third groove 27, and the orthographic projection of the third groove 27 on the plane where the substrate 10 is located is located within the orthographic projection range of the third opening 35 on the plane where the substrate 10 is located; a third light-emitting unit 28 is arranged in the third groove 27, and the wavelength of the third light-emitting unit 28 is smaller than the wavelength of the first light-emitting unit 23 and larger than the wavelength of the second light-emitting unit 24; along the direction perpendicular to the plane where the display panel 100 is located, the distance from the side surface of the third light-emitting unit 28 close to the first surface 101 to the first surface 101 is h3, where h1 <h3<h2。

[0078] Specifically, please refer to Fig.12 and Fig.13 In this embodiment, a third groove 27 is provided on the array layer 20, a third opening 35 is provided on the blocking wall layer 30, and the orthographic projection of the third groove 27 on the plane where the substrate 10 is located is located within the orthographic projection range of the third opening 35 on the plane where the substrate 10 is located, and the light emitted by the third light-emitting unit 28 reaches the light-emitting surface of the display panel 100 through the third opening 35. In order to prevent the blocking wall layer 30 from blocking the propagation of light, the third opening 35 penetrates the blocking wall layer 30 in a direction perpendicular to the plane where the display panel 100 is located. In this way, there is no blocking wall 34 shielding layer to block the light on the light propagation path, which is conducive to reducing the amount of light loss and improving the light extraction efficiency, thereby improving the display effect of the display panel 100.

[0079] Please continue to refer to Fig.12 and Fig.13, since the wavelength of the third light-emitting unit 28 is less than that of the first light-emitting unit 23 and greater than that of the second light-emitting unit 24, the luminous efficiency of the first light-emitting unit 23 is lower than that of the third light-emitting unit 28, and the luminous efficiency of the third light-emitting unit 28 is lower than that of the second light-emitting unit 24. To balance the luminous efficiency between different light-emitting units, h1 < h3 < h2 is set in this embodiment. In this way, whether it is the bottom-emitting display panel 100 or the top-emitting display panel 100, the optical path of the first light-emitting unit 23 is less than that of the third light-emitting unit 28, and the optical path of the third light-emitting unit 28 is less than that of the second light-emitting unit 24. During the propagation of light, the light loss of the first light-emitting unit 23 is less than that of the third light-emitting unit 28, and the light loss of the third light-emitting unit 28 is less than that of the second light-emitting unit 24. This is conducive to improving the luminous efficiency of the first light-emitting unit 23 and the third light-emitting unit 28, balancing the luminous efficiency of the first light-emitting unit 23, the second light-emitting unit 24, and the third light-emitting unit 28, thereby improving the brightness uniformity of the display panel 100 and further improving the display effect.

[0080] Optionally, Fig.14 The figure shows a schematic structural diagram of a reflection metal provided in an embodiment of the present application on the side wall of the groove. Fig.15 The figure shows another schematic structural diagram of a reflection metal provided in an embodiment of the present application on the side wall of the groove. Please refer to Fig.14 and Fig.15 , at least part of the inner surface of the first groove 21 is covered with a first reflection metal 211, and the first reflection metal 211 is electrically connected to the first light-emitting unit 23; at least part of the inner surface of the second groove 22 is covered with a second reflection metal 221, and the second reflection metal 221 is electrically connected to the second light-emitting unit 24; at least part of the inner surface of the third groove 27 is covered with a third reflection metal 271, and the third reflection metal 271 is electrically connected to the third light-emitting unit 28.

[0081] Specifically, please refer to Fig.14 and Fig.15 , in this embodiment, the inner surfaces of the first groove 21, the second groove 22, and the third groove 27 are covered with a reflection metal. The reflection metal reflects the light emitted by the light-emitting unit, converges the light-emitting angle of the light-emitting unit, and reduces the light scattering amount, which is conducive to improving the light-emitting efficiency of the light-emitting unit, thereby improving the display brightness of the display panel 100 and improving the display effect.

[0082] In addition, please refer to Fig.14 and Fig.15In this embodiment, the first electrode of the first light-emitting unit 23 is electrically connected to the driving transistor 207 through the first reflective metal 211, and the second electrode of the first light-emitting unit 23 is electrically connected to the first voltage signal terminal 208 through the first reflective metal 211; the first electrode of the second light-emitting unit 24 is electrically connected to the driving transistor 207 through the first reflective metal 211, and the second electrode of the first light-emitting unit 23 is electrically connected to the first voltage signal terminal 208 through the second reflective metal 221; the first electrode of the third light-emitting unit 28 is electrically connected to the driving transistor 207 through the third reflective metal 271, and the second electrode of the third light-emitting unit 28 is electrically connected to the first voltage signal terminal 208 through the third reflective metal 271. The display panel 100 provides a voltage signal to each light-emitting unit through the reflective metal, and each light-emitting unit is driven to emit light according to the received voltage signal to realize picture display.

[0083] It should be noted that Fig.14 and Fig.15 It is only for schematic illustration that reflective metal is provided in the groove and is electrically connected to each light-emitting unit respectively, and does not represent the actual structure of the reflective metal. In actual application, the setting area of ​​the reflective metal can be specifically set as needed, and this application does not make any specific limitation on this.

[0084] Optionally, refer to Figure 2 and Figure 3 , the first light-emitting unit 23 is a red light-emitting unit, the second light-emitting unit 24 is a blue light-emitting unit, and the third light-emitting unit 28 is a green light-emitting unit. Specifically, under normal circumstances, the wavelength of red light is greater than the wavelength of green light, and the wavelength of green light is greater than the wavelength of blue light. The light-emitting efficiency of the red light-emitting unit is the lowest, and the light-emitting efficiency of the blue light-emitting unit is the highest. In order to balance the light-emitting efficiency of the red, green, and blue light-emitting units and make the display panel 100 display uniformly, in this embodiment, the first light-emitting unit 23 is set to be a red light-emitting unit, the second light-emitting unit 24 is a blue light-emitting unit, and the third light-emitting unit 28 is a green light-emitting unit, so that the optical path of the red light-emitting unit is smaller than the optical path of the green light-emitting unit, and the optical path of the green light-emitting unit is smaller than the optical path of the blue light-emitting unit. In this way, during the propagation of light, the light loss of the red light-emitting unit is smaller than the light loss of the green light-emitting unit, and the light loss of the green light-emitting unit is smaller than the light loss of the blue light-emitting unit, which is conducive to improving the light-emitting efficiency of the red light-emitting unit and the green light-emitting unit, so that the light-emitting efficiency of the red, green, and blue light-emitting units is balanced, thereby improving the brightness uniformity of the display panel 100, and then improving the display effect.

[0085] Optionally, refer to Figure 6 The barrier layer 30 is located on the side of the array layer 20 away from the substrate 10. In the direction perpendicular to the plane where the display panel 100 is located, the depth of the first groove 21 is d1, and the depth of the second groove 22 is d2, wherein d1 <d2。

[0086] Specifically, please refer to Figure 6 The barrier layer 30 is located on the side of the array layer 20 away from the substrate 10, and the display panel 100 emits light from the top surface. When the depth d1 of the first groove 21 is less than the depth d2 of the second groove 22, the distance h1 from the side of the first light-emitting unit 23 away from the substrate 10 to the first surface 101 is less than the distance h2 from the side of the second light-emitting unit 24 away from the substrate 10 to the first surface 101, and the optical path of the first light-emitting unit 23 is less than the optical path of the second light-emitting unit 24, which is beneficial to reducing the light loss of the first light-emitting unit 23, thereby improving the light-emitting efficiency of the first light-emitting unit 23, and balancing the light-emitting efficiency of the first light-emitting unit 23 and the second light-emitting unit 24, thereby improving the brightness uniformity of the display panel 100 and further improving the display effect.

[0087] Typically, the array layer 20 includes a buffer layer, a first gate insulating layer, a second gate insulating layer, an interlayer dielectric layer, an organic layer and a flat layer stacked in sequence on the substrate 10. When the display panel 100 is top-emitting, the first groove 21 and the second groove 22 can penetrate the organic layer 205 and the second gate insulating layer 203, respectively, or the first groove 21 and the second groove 22 penetrate the interlayer dielectric layer 204 and the first gate insulating layer 202, respectively. The present application does not limit which film layer the first groove 21 and the second groove 22 penetrate, as long as the depth of the first groove 21 is less than the depth of the second groove 22 when the display panel 100 is top-emitting.

[0088] Optionally, Fig.16 The bottom-emitting display panel 100 is shown in FIG. Figure 1 For another AA' cross-section diagram, please refer to Fig.16 The array layer 20 at least includes a buffer layer 201, a first gate insulating layer 202, a second gate insulating layer 203, an interlayer dielectric layer 204, an organic layer 205 and a planar layer 206 stacked in sequence on the substrate 10; the barrier layer 30 is located between the buffer layer 201 and the first gate insulating layer 202, and along the direction perpendicular to the plane where the display panel 100 is located, the depth of the first groove 21 is d3, and the depth of the second groove 22 is d4, wherein d3>d4.

[0089] Specifically, please refer to Fig.16The array layer 20 at least includes a buffer layer 201, a first gate insulating layer 202, a second gate insulating layer 203, an interlayer dielectric layer 204, an organic layer 205 and a flat layer 206 stacked in sequence on the substrate 10, and the barrier layer 30 is located between the buffer layer 201 and the first gate insulating layer 202. The display panel 100 emits light from the bottom surface. When the depth d3 of the first groove 21 is greater than the depth d4 of the second groove 22, the distance h1 from the side of the first light-emitting unit 23 away from the substrate 10 to the first surface 101 is less than the distance h2 from the side of the second light-emitting unit 24 away from the substrate 10 to the first surface 101, and the optical path of the first light-emitting unit 23 is less than the optical path of the second light-emitting unit 24, which is conducive to reducing the light loss of the first light-emitting unit 23, thereby improving the light-emitting efficiency of the first light-emitting unit 23, and making the light-emitting efficiency of the first light-emitting unit 23 and the light-emitting efficiency of the second light-emitting unit 24 reach a balance, thereby improving the brightness uniformity of the display panel 100 and improving the display effect.

[0090] It should be noted that, when the display panel 100 is bottom-emitting light, the barrier layer 30 is disposed between the buffer layer 201 and the first gate insulating layer 202, which is only one implementation in the present embodiment. In other embodiments, the barrier layer 30 may also be disposed at other positions, for example, the barrier layer 30 may be located at a side of the substrate 10 away from the array layer 20. The specific position of the barrier layer 30 may be selected according to actual needs, and the present application does not limit this.

[0091] Optionally, Fig.17 FIG. 2 is another schematic diagram of the structure of the first groove 21 in the top-emitting display panel 100 provided in the embodiment of the present application. Fig.17 The side wall 210 of the first groove 21 is stepped, and the stepped side wall 210 can reflect all scattered light at various angles, which is beneficial to improving the light extraction efficiency of the first light emitting unit 23. Fig.17 As shown, when the side wall 210 of the first groove 21 is set to be stepped, compared with the linear side wall, the opening of the first groove 21 close to the light emitting surface can be further enlarged, which is beneficial to further improve the light extraction efficiency of the first light emitting unit 23, so that the light emitting efficiency of the first light emitting unit 23 is balanced with the light emitting efficiency of the second light emitting unit 24, thereby improving the brightness uniformity of the display panel 100 and further improving the display effect.

[0092] Fig.18 FIG. 2 is another structural schematic diagram of the first groove 21 in the top-emitting display panel 100 provided in the embodiment of the present application. Please refer to FIG. Fig.18The side wall 210 of the first groove 21 is wavy, and the wavy side wall 210 can reflect light scattered at all angles, which is beneficial to improving the light extraction efficiency of the first light-emitting unit 23, and balancing the light-emitting efficiency of the first light-emitting unit 23 and the light-emitting efficiency of the second light-emitting unit 24, thereby improving the brightness uniformity of the display panel 100 and further improving the display effect.

[0093] Optionally, Fig.19 FIG. 2 is another structural schematic diagram of the first groove 21 in the top-emitting display panel 100 provided in the embodiment of the present application. Please refer to FIG. Fig.19 The first groove 21 is hemispherical, and the center of the hemispherical shape is located in the same plane as the surface of the array layer 20 away from the substrate 10.

[0094] Specifically, please refer to Fig.19 In this embodiment, the first groove 21 is hemispherical, and the side wall 210 of the first groove 21 is set as a curved surface, which can increase the reflection of the first groove 21 on the light emitted by the first light-emitting unit 23, which is beneficial to improving the light extraction efficiency of the first light-emitting unit 23, so that the light-emitting efficiency of the first light-emitting unit 23 is balanced with the light-emitting efficiency of the second light-emitting unit 24, thereby improving the brightness uniformity of the display panel 100 and further improving the display effect.

[0095] The hemispherical center 214 is located in the same plane as the surface of the array layer 20 away from the substrate 10. Fig.19 As shown, along the light emitting direction of the first light emitting unit, the opening of the first groove 21 gradually increases, which is beneficial to increase the light emitting area of ​​the first light emitting unit 23 and improve the forward light emitting intensity of the first light emitting unit 23, thereby improving the light emitting efficiency of the first light emitting unit 23.

[0096] Please refer to Fig.19 The positive and negative electrodes of the first light-emitting unit 23 are electrically connected to the driving transistor 207 and the first voltage signal terminal 208 respectively through the first reflective metal 211; the positive and negative electrodes of the second light-emitting unit 24 are electrically connected to the driving transistor 207 and the first voltage signal terminal 208 respectively through the second reflective metal 221. The display panel 100 provides a voltage signal to each light-emitting unit through the reflective metal, and each light-emitting unit is driven to emit light according to the received voltage signal to realize image display.

[0097] Based on the same inventive concept, the present application also provides a display device 200, see Fig. 20 , Fig. 20The display device 200 provided in the embodiment of the present application is a schematic diagram of the structure, and the display device 200 includes a display panel, and the display panel is any display panel 100 provided in the above embodiment of the present application. It should be noted that the embodiment of the display device 200 provided in the present application can refer to the embodiment of the above display panel 100, and the same parts are not repeated here. The display device 200 provided in the present application can be: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, etc.

[0098] It can be seen from the above embodiments that the present application has the following beneficial effects:

[0099] The display panel and display device provided in the present application are provided with a groove on the array layer, wherein the first light-emitting unit is located in the first groove, and the second light-emitting unit is located in the second groove, and the distance from the light-emitting surface of the first light-emitting unit away from the substrate 10 to the first surface is h1, and the distance from the light-emitting surface of the second light-emitting unit away from the substrate 10 to the first surface is h2. By providing different depths of the first groove and the second groove along the plane perpendicular to the display panel, it is ensured that the distance h1 from one side of the light-emitting surface of the first light-emitting unit to the first surface is smaller than the distance h2 from one side of the light-emitting surface of the second light-emitting unit to the first surface, so that the optical path of the first light-emitting unit is smaller than the optical path of the second light-emitting unit, and the light loss of the first light-emitting unit is reduced, thereby improving the light-emitting efficiency of the first light-emitting unit, and balancing the light-emitting efficiency of the first light-emitting unit with the light-emitting efficiency of the second light-emitting unit, thereby improving the brightness uniformity of the display panel, and further improving the display effect.

[0100] The above description shows and describes several preferred embodiments of the present application, but as mentioned above, it should be understood that the present application is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present application, and should be within the scope of protection of the claims attached to the present application.

Claims

1. A display panel, characterized in that: include: A substrate and an array layer, wherein the surface of the display panel close to the light emitting surface is a first surface; The array layer comprises a first groove and a second groove, wherein a first light emitting unit is disposed in the first groove, and a second light emitting unit is disposed in the second groove, wherein a wavelength of the first light emitting unit is greater than a wavelength of the second light emitting unit; In a direction perpendicular to the plane where the display panel is located, the distance from the side surface of the first light-emitting unit close to the first surface to the first surface is h1, and the distance from the side surface of the second light-emitting unit close to the first surface to the first surface is h2, where h1 <h2; Along the first direction, the bottom width of the first groove is L1, the bottom width of the second groove is L2, and L1=L2; wherein the first direction is the direction from the first groove to the second groove; The extending surface of the bottom of the first groove along the first direction is a first extending surface, and the extending surface of the bottom of the second groove along the first direction is a second extending surface; Along the first direction, the width of the first groove close to the light emitting surface is L3, and the width of the second groove close to the light emitting surface is L4, wherein L3>L4; and / or, An included angle between the side wall of the first groove and the first extension surface is θ3, and an included angle between the side wall of the second groove and the second extension surface is θ4, wherein θ3≤θ4<90°.

2. The display panel according to claim 1, characterized in that: It also includes a blocking wall layer, the blocking wall layer includes an opening and a blocking wall, wherein the opening includes a first opening and a second opening, and along a direction perpendicular to the plane where the display panel is located, the first opening and the second opening both penetrate the blocking wall layer; The orthographic projection of the first groove on the plane where the substrate is located is located within the orthographic projection range of the first opening on the plane where the substrate is located, and the orthographic projection of the second groove on the plane where the substrate is located is located within the orthographic projection range of the second opening on the plane where the substrate is located.

3. The display panel according to claim 2, characterized in that: The retaining wall includes a first bottom surface away from the first surface, the angle between the side wall of the first opening and the first bottom surface is θ1, and the angle between the side wall of the second opening and the first bottom surface is θ2; wherein θ1=θ2.

4. The display panel according to claim 3, characterized in that: An extending surface of the bottom of the first groove along the first direction is a first extending surface, and an extending surface of the bottom of the second groove along the first direction is a second extending surface; The included angle between the side wall of the first groove and the first extension surface is θ3, and the included angle between the side wall of the second groove and the second extension surface is θ4; wherein the first direction is the direction from the first groove to the second groove; A reflective layer is disposed on at least a portion of the sidewall of the first opening, θ3<θ1<θ4.

5. The display panel according to claim 3, characterized in that: An extending surface of the bottom of the first groove along the first direction is a first extending surface, and an extending surface of the bottom of the second groove along the first direction is a second extending surface; The included angle between the side wall of the first groove and the first extension surface is θ3, and the included angle between the side wall of the second groove and the second extension surface is θ4; wherein the first direction is the direction from the first groove to the second groove; Among them, θ1≤θ3≤θ4<90°.

6. The display panel according to claim 3, characterized in that: An extending surface of the bottom of the first groove along the first direction is a first extending surface, and an extending surface of the bottom of the second groove along the first direction is a second extending surface; The included angle between the side wall of the first groove and the first extension surface is θ3, and the included angle between the side wall of the second groove and the second extension surface is θ4; wherein the first direction is the direction from the first groove to the second groove; Among them, the difference between θ1 and θ3 is equal to the difference between θ2 and θ4.

7. The display panel according to claim 1, characterized in that: The side wall of the first groove at least includes a first side wall and a second side wall, and the first side wall is located between the second side wall and the bottom of the first groove; An included angle between the first side wall and the first extension surface is θ5, and an included angle between the second side wall and the first extension surface is θ6, wherein θ5>θ6.

8. The display panel according to claim 2, characterized in that: The opening further includes a third opening, and the third opening penetrates the barrier layer along a direction perpendicular to the plane where the display panel is located; The array layer further includes a third groove, the orthographic projection of the third groove on the plane where the substrate is located is located within the orthographic projection range of the third opening on the plane where the substrate is located; a third light-emitting unit is arranged in the third groove, and the wavelength of the third light-emitting unit is smaller than the wavelength of the first light-emitting unit and larger than the wavelength of the second light-emitting unit; Along the direction perpendicular to the plane where the display panel is located, the distance from the side surface of the third light emitting unit close to the first surface to the first surface is h3, where h1 <h3<h2。 9. The display panel according to claim 8, characterized in that: At least a portion of the inner surface of the first groove is covered with a first reflective metal, and the first reflective metal is electrically connected to the first light-emitting unit; At least a portion of the inner surface of the second groove is covered with a second reflective metal, and the second reflective metal is electrically connected to the second light-emitting unit; At least a portion of the inner surface of the third groove is covered with a third reflective metal, and the third reflective metal is electrically connected to the third light-emitting unit.

10. The display panel according to claim 8, characterized in that: The first light emitting unit is a red light emitting unit, the second light emitting unit is a blue light emitting unit, and the third light emitting unit is a green light emitting unit.

11. The display panel according to claim 2, characterized in that: The barrier layer is located on a side of the array layer away from the substrate. In a direction perpendicular to the plane where the display panel is located, the depth of the first groove is d1, and the depth of the second groove is d2, wherein d1 <d2。 12. The display panel according to claim 2, characterized in that: The array layer at least includes a buffer layer, a first gate insulating layer, a second gate insulating layer, an interlayer dielectric layer, an organic layer and a planar layer stacked in sequence on the substrate; The barrier layer is located between the buffer layer and the first gate insulating layer. In a direction perpendicular to the plane where the display panel is located, the depth of the first groove is d3, and the depth of the second groove is d4, wherein d3>d4.

13. The display panel according to claim 1, characterized in that: The side wall of the first groove is stepped or wavy.

14. The display panel according to claim 1, characterized in that: The first groove is hemispherical, and the center of the hemispherical shape is located in the same plane as the surface of the array layer away from the substrate.

15. A display device, characterized in that: A display panel comprising any one of claims 1-14.

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