Display panel and display device

Abstract

The present application discloses a display panel and a display device, belonging to the field of display technology. The display panel includes: a substrate, a pixel defining layer, a light-emitting device, and an optical adjustment layer. The attenuation rate of the light emitted by the first light-emitting device is higher than the attenuation rate of the light emitted by the second light-emitting device. Since the optical adjustment layer can adjust the emission angle of the light emitted by the first light-emitting device and / or the emission angle of the light emitted by the second light-emitting device, the attenuation rate of the light emitted by the first light-emitting device and the attenuation rate of the light emitted by the second light-emitting device can be kept as consistent as possible, thereby avoiding the phenomenon of inconsistent attenuation rates of light emitted by light-emitting devices of different colors under a larger viewing angle. This can avoid the phenomenon of color deviation when the display panel displays the picture at different viewing angles. The display effect of the display panel can be improved.

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] Active matrix organic light emitting device (AMOLED) is a current-type light-emitting device that is increasingly used in the field of high-performance displays due to its low power consumption, self-luminescence, high color saturation, fast response, wide viewing angle and flexibility.

[0003] At present, in order to reduce the reflectivity of the internal structure of the OLED display panel to the ambient light, the following two methods are usually adopted: the first method is to attach a circular polarizer to the light-emitting side of the OLED display panel. The circular polarizer can reduce the amount of ambient light entering the OLED display panel and then being reflected by the internal structure of the OLED display panel and then being emitted from the light-emitting surface. The second method is to encapsulate a color filter on the light-emitting side of the OLED display panel. Since the color filter can filter the light, it can also reduce the amount of ambient light entering the OLED display panel and then being reflected by the internal structure of the OLED display panel and then being emitted from the light-emitting surface. In addition, compared with circular polarizers, color filters have a higher transmittance to the light emitted by the OLED display panel, and the thickness of the OLED display panel integrated with the color filter is lower. Therefore, more and more OLED display panels are integrated with color filters.

[0004] However, in OLED display panels with integrated color filters, the attenuation rates of light emitted by different colored OLED devices vary at different viewing angles due to differences in the shape, size, and microcavity structure of the OLED devices. Consequently, the display panel may exhibit color shift when displaying images at different viewing angles. For example, when displaying white images on an OLED display panel, the image may appear bluish or pinkish, resulting in poor display quality. Summary of the Invention

[0005] The embodiments of the present application provide a display panel and a display device. The technical solution is as follows:

[0006] According to a first aspect of the present application, a display panel is provided, comprising: a substrate;

[0007] a pixel defining layer located on the substrate, wherein the pixel defining layer is used to divide the substrate into a plurality of pixel areas;

[0008] a light-emitting device located in the pixel area, wherein the plurality of light-emitting devices include a first light-emitting device and a second light-emitting device, wherein a decay rate of light emitted by the first light-emitting device is higher than a decay rate of light emitted by the second light-emitting device;

[0009] and an optical adjustment layer located on a side of the pixel defining layer away from the substrate;

[0010] In which, the optical adjustment layer is used to adjust the light emitted by the first light-emitting device to increase the emission angle of the light emitted by the first light-emitting device when it is emitted from the display panel, and / or to adjust the light emitted by the second light-emitting device to reduce the emission angle of the light emitted by the second light-emitting device when it is emitted from the display panel.

[0011] Optionally, the optical adjustment layer includes: a first sub-optical adjustment layer and a second sub-optical adjustment layer;

[0012] The first sub-optical adjustment layer has a first microstructure and / or a second microstructure, the orthographic projection of the first microstructure on the substrate at least partially overlaps with the orthographic projection of the first light-emitting device on the substrate, and the orthographic projection of the second microstructure on the substrate at least partially overlaps with the orthographic projection of the second light-emitting device on the substrate;

[0013] The second sub-optical adjustment layer covers the first microstructure and / or the second microstructure, and the refractive index of the second sub-optical adjustment layer is different from that of the first sub-optical adjustment layer.

[0014] Optionally, the first sub-optical adjustment layer has the first microstructure, the refractive index of the first sub-optical adjustment layer is greater than the refractive index of the second sub-optical adjustment layer, and the first microstructure includes at least one first groove, the first groove is located on a side of the first sub-optical adjustment layer close to the second sub-optical adjustment layer, and the groove surface of the first groove is a curved surface.

[0015] Optionally, the first sub-optical adjustment layer has the first microstructure, the refractive index of the first sub-optical adjustment layer is smaller than that of the second sub-optical adjustment layer, and the first microstructure includes at least one protrusion, and the protrusion has a curved surface facing the second sub-optical adjustment layer.

[0016] Optionally, the first sub-optical adjustment layer has the second microstructure, the refractive index of the first sub-optical adjustment layer is smaller than the refractive index of the second sub-optical adjustment layer, and the second microstructure includes at least one opening or at least one second groove;

[0017] When the second microstructure includes the at least one second groove, the second groove is located on a side of the first sub-optical adjustment layer close to the second sub-optical adjustment layer, and a groove surface of the second groove is a curved surface.

[0018] Optionally, when the second microstructure includes the at least one opening, the orthographic projection of the light-emitting device on the substrate is located within the orthographic projection of the opening on the substrate.

[0019] Optionally, the side surface of the opening is a slope, and the slope angle of the first sub-optical adjustment layer is an acute angle.

[0020] Optionally, the first sub-optical adjustment layer includes: at least two stacked insulating layers, and the display panel further includes: a touch layer located between any two of the insulating layers.

[0021] Optionally, the display panel further includes: an encapsulation layer, a black matrix and a color resist layer, the black matrix and the color resist layer are located on a side of the optical adjustment layer away from the substrate, and the encapsulation layer is located between the pixel defining layer and the color resist layer.

[0022] According to another aspect of the present application, a display device is provided, comprising: a power supply component, and a display panel according to any one of claims 1 to 9, wherein the power supply component is configured to supply power to the display panel.

[0023] The beneficial effects of the technical solutions provided in the embodiments of the present application include at least:

[0024] A display panel is provided, comprising: a substrate, a pixel defining layer, a light-emitting device, and an optical adjustment layer. The attenuation rate of light emitted by a first light-emitting device is higher than the attenuation rate of light emitted by a second light-emitting device. Because the optical adjustment layer can adjust the emission angle of light emitted by the first light-emitting device and / or the emission angle of light emitted by the second light-emitting device, the attenuation rate of light emitted by the first light-emitting device and the attenuation rate of light emitted by the second light-emitting device can be kept as consistent as possible, thereby avoiding the phenomenon of inconsistent attenuation rates of light emitted by light-emitting devices of different colors at larger viewing angles. This prevents color shift when displaying images on the display panel at different viewing angles, thereby improving the display quality of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0026] Figure 1 It is a structural diagram of a display panel;

[0027] Figure 2 yes Figure 1 A schematic diagram of the top view of the display panel provided;

[0028] Figure 3 It is a structural diagram of another display panel;

[0029] Figure 4 is a structural diagram of a display panel provided in an embodiment of the present application;

[0030] Figure 5 is a structural diagram of another display panel provided in an embodiment of the present application;

[0031] Figure 6 is a structural diagram of another display panel provided in an embodiment of the present application;

[0032] Figure 7 This is a schematic diagram of the L-Decay improvement effect of a first light-emitting device with a large horizontal viewing angle provided by an embodiment of the present application;

[0033] Figure 8 is a structural diagram of another display panel provided in an embodiment of the present application;

[0034] Figure 9 This is a schematic diagram of the L-Decay improvement effect of another first light-emitting device at a large horizontal viewing angle provided by an embodiment of the present application;

[0035] Figure 10 is a structural diagram of another display panel provided in an embodiment of the present application;

[0036] Figure 11 This is a schematic diagram of the L-Decay improvement effect of a second light-emitting device with a large horizontal viewing angle provided by an embodiment of the present application;

[0037] Figure 12 is a structural diagram of another display panel provided in an embodiment of the present application;

[0038] Figure 13 This is a schematic diagram of the L-Decay improvement effect of another second light-emitting device at a large horizontal viewing angle provided by an embodiment of the present application;

[0039] Figure 14 is a schematic diagram of a partial structure of an opening in the second microstructure provided in an embodiment of the present application;

[0040] Figure 15 is a schematic diagram of a partial structure of another type of opening in the second microstructure provided in an embodiment of the present application;

[0041] Figure 16 It is a white light wide viewing angle CIE locus diagram and a schematic diagram of the degree of white light color deviation of a reference device in the related art;

[0042] Figure 17 1. A CIE locus diagram of white light with a wide viewing angle and a schematic diagram of the degree of white light color deviation of a display panel provided in an embodiment of the present application;

[0043] Figure 18 This is a diagram of the white light wide viewing angle CIE locus and the degree of white light color deviation of another reference device in the related art;

[0044] Figure 19 This is a schematic diagram of a white light wide viewing angle CIE locus diagram and a white light color deviation degree diagram of another display panel provided in an embodiment of the present application;

[0045] Figure 20 is a structural diagram of another display panel provided in an embodiment of the present application;

[0046] Figure 21 yes Figure 20 A top view of the display panel is shown;

[0047] Figure 22 is a structural diagram of another display panel provided in an embodiment of the present application;

[0048] Figure 23 yes Figure 22 A top view of the display panel is shown;

[0049] Figure 24 is a structural diagram of another display panel provided in an embodiment of the present application;

[0050] Figure 25 yes Figure 24 A schematic diagram of the top view of the display panel shown;

[0051] Figure 26 2. This is a schematic diagram of the L-Decay improvement effect of a light-emitting device for emitting blue light in a horizontal direction with a large viewing angle provided by an embodiment of the present application;

[0052] Figure 272. This is a schematic diagram of the L-Decay improvement effect of a light-emitting device for emitting green light in a horizontal direction with a large viewing angle provided by an embodiment of the present application;

[0053] Figure 28 2. This is a schematic diagram of another display panel provided by an embodiment of the present application for improving the color deviation of horizontal white light with large viewing angles;

[0054] Figure 29 1 is a schematic diagram of the CIE1976 trajectory of another display panel provided in an embodiment of the present application;

[0055] Figure 30 is a structural diagram of another display panel provided in an embodiment of the present application;

[0056] Figure 31 is a structural diagram of another display panel provided in an embodiment of the present application;

[0057] Figure 32 yes Figure 31 A top view of the display panel is shown;

[0058] Figure 33 This is a schematic structural diagram of another display panel provided in an embodiment of the present application.

[0059] The above drawings provide clear examples of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific examples. DETAILED DESCRIPTION

[0060] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0061] In related art, please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the film structure of a display panel. Figure 2 yes Figure 1A schematic diagram of the top structure of the display panel is provided. The display panel 10 includes: a substrate 11, a light-emitting device functional layer 12 and an encapsulation layer 13. Among them, the light-emitting device functional layer 12 may include: a plurality of light-emitting devices for emitting red light, a plurality of light-emitting devices for emitting green light and a plurality of light-emitting devices for emitting blue light. That is, each pixel on this display panel is composed of a light-emitting device for emitting red light, a light-emitting device for emitting green light and a light-emitting device for emitting blue light, and the three primary colors are mixed to form the color displayed by each pixel, thereby enabling the display panel to provide a color picture. Due to the influence of the microcavity structure of the OLED device, the brightness attenuation rate of light-emitting devices of different colors at different viewing angles is inconsistent. Therefore, the display panel will exhibit color deviation when displaying pictures at different viewing angles.

[0062] like Figure 3 As shown, Figure 3 Figure 1 is a schematic diagram of another display panel's film structure. Display panel 10 may also include a touch layer 14 and a color filter 15. Because the thickness of color filter 15 (e.g., 5 microns) is significantly thinner than that of the polarizer (e.g., greater than or equal to 60 microns), it effectively reduces the thickness of the module stack, thereby improving the product's resistance to bending and curling. Furthermore, color filter 15 significantly increases light transmittance compared to polarizers. Therefore, displays integrating color filter 15 can achieve the same brightness with a lower drive current, effectively reducing power consumption.

[0063] However, in order to reduce the reflection of ambient light and improve the contrast, the color filter film 15 introduces a black matrix 16 in the non-pixel area, which causes the luminance decay (English: Luminance decay; abbreviated: L-Decay) of the light output of the light-emitting device 12 to increase with the increase of the viewing angle. Moreover, the differentiated design of the shape and aspect ratio of light-emitting devices of different colors causes the black matrix 16 to aggravate the L-Decay of light-emitting devices of different colors to different degrees. As a result, the display panel has the phenomenon of bluish or pinkish visual effects of white light at a large viewing angle. In order to improve the above phenomenon, the related art alleviates the L-Decay by changing the opening of the black matrix 16 of some light-emitting devices. However, increasing the opening of the black matrix 16 will cause the metal traces of the touch layer 14 underneath to be exposed, resulting in an increase in the reflection of ambient light in the off state, which in turn leads to a decrease in the contrast of the display panel.

[0064] Please refer to Figure 4 , Figure 4 FIG2 is a schematic diagram of a structure of a display panel provided by an embodiment of the present application. The display panel 20 may include: a substrate 21 , a pixel defining layer 22 , a light emitting device 23 and an optical adjustment layer 24 .

[0065] A pixel defining layer 22 may be located on the substrate 21 and may be used to divide the substrate 21 into a plurality of pixel regions 211. Light-emitting devices 23 may be located within the pixel regions 211. The plurality of light-emitting devices 23 may include a first light-emitting device 231 and a second light-emitting device 232. An optical adjustment layer 24 may be located on a side of the pixel defining layer 22 away from the substrate 21.

[0066] The attenuation rate of the light emitted by the first light-emitting device 231 is higher than the attenuation rate of the light emitted by the second light-emitting device 232. In this case, when the angle between the viewing direction of the human eye and the normal to the light-emitting surface of the display panel 20 is large (for example, an angle of 45 degrees to 60 degrees), at the same viewing angle, the brightness of the light emitted by the first light-emitting device 231 is lower than the brightness of the light emitted by the second light-emitting device 232, making it very easy to observe color shift on the screen, which in turn will lead to poor display quality of the display panel 20. Optionally, the color of the light emitted by the first light-emitting device 231 in the display panel 20 is different from the color of the light emitted by the second light-emitting device 232.

[0067] To this end, the optical adjustment layer 24 in the embodiment of the present application can be used to adjust the light emitted by the first light emitting device 231 to increase the emission angle of the light emitted by the first light emitting device 231 when it is emitted from the display panel 20, and / or adjust the light emitted by the second light emitting device 232 to reduce the emission angle of the light emitted by the second light emitting device 232 when it is emitted from the display panel 20. The emission angle can refer to the angle between the angle at which the light emitted by the light emitting device 23 is emitted from the display surface of the display panel and the normal to the display surface.

[0068] For example, the optical adjustment layer 24 can be used to adjust the light emitted by the first light-emitting device 231 to increase the exit angle of the light emitted by the first light-emitting device 231 when it is emitted from the display panel. Alternatively, the light emitted by the second light-emitting device 232 can be adjusted to reduce the exit angle of the light emitted by the second light-emitting device 232 when it is emitted from the display panel. Alternatively, the optical adjustment layer 24 can be used to adjust the light emitted by the second light-emitting device 232 while adjusting the light emitted by the first light-emitting device 231. While increasing the exit angle of the light emitted by the first light-emitting device 231 when it is emitted from the display panel, the exit angle of the light emitted by the second light-emitting device 232 when it is emitted from the display panel is reduced. It should be noted that, for ease of understanding, the embodiments of the present application are described in detail in the following sections. Figure 4 In the description, the optical adjustment layer 24 is used as an example to adjust the light emitted by the first light emitting device 231 and the second light emitting device 232 at the same time. Of course, the optical adjustment layer 24 can also adjust the light emitted by the first light emitting device 231 or the second light emitting device 232 separately.

[0069] In this way, the optical adjustment layer 24 can adjust the emission angle of the light emitted by the first light-emitting device 231 and / or the emission angle of the light emitted by the second light-emitting device 232 in the display panel 20 to ensure that the attenuation rate of the light emitted by the first light-emitting device 231 and the attenuation rate of the light emitted by the second light-emitting device 232 are as consistent as possible. This can prevent color shift when the display panel 20 displays images at different viewing angles, thereby improving the display quality of the display panel.

[0070] In summary, an embodiment of the present application provides a display panel comprising: a substrate, a pixel defining layer, a light-emitting device, and an optical adjustment layer. The attenuation rate of light emitted by the first light-emitting device is higher than the attenuation rate of light emitted by the second light-emitting device. Because the optical adjustment layer can adjust the emission angle of light emitted by the first light-emitting device and / or the emission angle of light emitted by the second light-emitting device, the attenuation rate of light emitted by the first light-emitting device and the attenuation rate of light emitted by the second light-emitting device can be kept as consistent as possible, thereby avoiding the phenomenon of inconsistent attenuation rates of light emitted by light-emitting devices of different colors at a larger viewing angle. This prevents color shift when displaying images on the display panel at different viewing angles, thereby improving the display quality of the display panel.

[0071] In the embodiments of this application, Figure 5 As shown, Figure 5 Schematic diagram of another display panel structure provided by an embodiment of the present application. The optical adjustment layer 24 may include: a first sub-optical adjustment layer 241 and a second sub-optical adjustment layer 242. The refractive index of the first sub-optical adjustment layer 241 and the second sub-optical adjustment layer 242 may be different. The first sub-optical adjustment layer 241 has a first microstructure 2411 and / or a second microstructure 2412. It should be noted that, for ease of understanding, the embodiment of the present application is Figure 5 In the description, the first optical sub-adjustment layer 241 including the first microstructure 2411 and the second microstructure 2412 is taken as an example. Of course, the first optical sub-adjustment layer 241 may also include only the first microstructure 2411 or the second microstructure 2412 .

[0072] The orthographic projection of the first microstructure 2411 on the substrate 21 at least partially overlaps with the orthographic projection of the first light-emitting device 231 on the substrate 21, and the orthographic projection of the second microstructure 2412 on the substrate 21 at least partially overlaps with the orthographic projection of the second light-emitting device 232 on the substrate. Furthermore, the second sub-optical adjustment layer 242 covers the first microstructure 2411 and / or the second microstructure 2412, allowing light passing through the first microstructure 2411 and / or the second microstructure 2412 to enter the second sub-optical adjustment layer 242. This ensures that light emitted by the first light-emitting device 231 can sequentially pass through the first microstructure 2411 and the second sub-optical adjustment layer 242 before exiting, thereby increasing the angle of light exiting from the display panel 20. Furthermore, light emitted by the second light-emitting device 232 can sequentially pass through the second microstructure 2412 and the second sub-optical adjustment layer 242 before exiting, thereby decreasing the angle of light exiting from the display panel 20.

[0073] For example, the orthographic projection of the first light-emitting device 231 on the substrate 21 is located within the orthographic projection of the first microstructure 2411 on the substrate 21. In this way, the first microstructure 2411 can diffuse the light emitted by the first light-emitting device 231 to reduce the rate at which the brightness of the light beam emitted by the first light-emitting device 231 decays at a wide viewing angle. This ensures that the viewing angle brightness decay rate of the light emitted by the first light-emitting device 231 is as consistent as possible with the viewing angle brightness decay rate of the light emitted by the second light-emitting device 232, thereby reducing the color shift of the display panel.

[0074] The orthographic projection of the second light-emitting device 232 on the substrate 21 is located within the orthographic projection of the second microstructure 2412 on the substrate 21. In this way, the second microstructure 2412 can converge the light emitted by the second light-emitting device 232, thereby increasing the rate at which the brightness of the light beam emitted by the second light-emitting device 232 decays at a wide viewing angle. This ensures that the viewing angle brightness decay rate of the light emitted by the second light-emitting device 232 is as consistent as possible with the viewing angle brightness decay rate of the light emitted by the first light-emitting device 231, thereby reducing color shift of the display panel.

[0075] There are many ways to implement the first microstructure 2411 of the first sub-optical adjustment layer 241 in the above embodiment. The present application uses the following two possible implementations as examples for schematic illustration:

[0076] The first possible way is to Figure 6 As shown, Figure 6This is a schematic diagram of the structure of another display panel provided by an embodiment of the present application. The first sub-optical adjustment layer 241 has a first microstructure 2411. The refractive index of the first sub-optical adjustment layer 241 is greater than that of the second sub-optical adjustment layer 24. The first microstructure 2411 includes at least one first groove A1. The first groove A1 is located on the side of the first sub-optical adjustment layer 241 near the second sub-optical adjustment layer 242, and the groove surface of the first groove A1 is curved. The second sub-optical adjustment layer 242 covers the first groove A1. As a result, the first groove A1 can diffuse the light emitted by the first light-emitting device 231.

[0077] like Figure 7 As shown, Figure 7 This is a schematic diagram of the L-Decay improvement effect of a first light emitting device with a large horizontal viewing angle provided by an embodiment of the present application. Figure 7 The horizontal axis in represents different viewing angles, for example, a positive viewing angle is a viewing angle on the right side of the display panel, and a negative viewing angle is a viewing angle on the left side of the display panel; Figure 7 The vertical axis in represents the normalized brightness. For this purpose, Figure 7 The curves C1 and C2 in the figure may represent the brightness attenuation curves of the first light emitting device at different viewing angles. Here, a photometer may be used to obtain the first brightness attenuation curve C1 of the first light emitting device and the first reference brightness attenuation curve C2 of the first light emitting device in the related art where no optical adjustment layer is provided. Figure 7 It can be seen that the brightness of the first light-emitting device decreases less with increasing viewing angle than in the related art. For example, at a viewing angle of 45 degrees, the brightness of the first light-emitting device in the related art decreases by 60%, while the brightness of the first light-emitting device in the embodiment of the present application decreases by 50%. This reduces the brightness decay rate of the first light-emitting device at wide viewing angles, thereby reducing the color shift of the display panel.

[0078] The second possible implementation method is Figure 8 As shown, Figure 8 This is a schematic diagram of the structure of another optical adjustment layer provided by an embodiment of the present application. The first sub-optical adjustment layer 241 has a first microstructure 2411. The refractive index of the first sub-optical adjustment layer 241 is lower than that of the second sub-optical adjustment layer 24. The first microstructure 2411 includes at least one protrusion A2, with the surface of the at least one protrusion A2 facing the second sub-optical adjustment layer 242 being curved. The at least one protrusion A2 can have a repeating periodic structure. The second sub-optical adjustment layer 242 covers the at least one protrusion A2. Thus, the at least one protrusion A2 can diffuse light emitted by the first light-emitting device 231.

[0079] like Figure 9 As shown, Figure 9This is a schematic diagram of the improvement effect of the horizontal large viewing angle L-Decay of another first light emitting device provided in an embodiment of the present application. Figure 9 The meaning of the horizontal and vertical coordinates can be referred to Figure 7 The meaning of the horizontal and vertical coordinates in the embodiment of the present application will not be repeated here. Figure 9 The curves C3 and C2 in the figure can represent the brightness attenuation curves of the first light emitting device at different viewing angles. Here, a photometer can be used to obtain the second brightness attenuation curve C3 of the first light emitting device and the first reference brightness attenuation curve C2 of the first light emitting device in the related art where the optical adjustment layer is not provided. Figure 9 As can be seen, the brightness of the first light-emitting device decreases less with increasing viewing angle than in the related art. For example, at a viewing angle of 45 degrees, the brightness of the first light-emitting device in the related art decreases by 60%, while the brightness of the first light-emitting device in the embodiment of the present application decreases by 57%. This reduces the brightness decay rate of the first light-emitting device at wide viewing angles, thereby reducing the color shift of the display panel.

[0080] There are many ways to implement the second microstructure 2412 of the first sub-optical adjustment layer 241 in the above embodiment. For example, the second microstructure 2412 may include at least one opening or at least one second groove. The present application uses the following two optional implementations as examples for schematic illustration:

[0081] The first optional implementation method is Figure 10 As shown, Figure 10 This is a schematic diagram of the structure of another display panel provided by an embodiment of the present application. The first sub-optical adjustment layer 241 includes a second microstructure 2412. The refractive index of the first sub-optical adjustment layer 241 is lower than that of the second sub-optical adjustment layer 24. When the second microstructure 2412 includes at least one second groove A4, the second groove A4 is located on the side of the first sub-optical adjustment layer 241 that is closer to the second sub-optical adjustment layer 242, and the groove surface of the second groove A4 is a curved surface. The second sub-optical adjustment layer 242 covers the at least one second groove A4. In this way, the at least one second groove A4 can converge light emitted by the second light-emitting device 232.

[0082] like Figure 11 As shown, Figure 11 This is a schematic diagram of the L-Decay improvement effect of a second light emitting device with a large horizontal viewing angle provided by an embodiment of the present application. Figure 11 The meaning of the horizontal and vertical coordinates can be referred to Figure 7 The meaning of the horizontal and vertical coordinates in the embodiment of the present application will not be repeated here. Figure 11Curves C4 and C5 in the figure can represent the brightness decay curves of the second light-emitting device at different viewing angles. A photometer can be used to obtain a third brightness decay curve C4 of the second light-emitting device, as well as a second reference brightness decay curve C5 of a second light-emitting device in the related art without an optical adjustment layer. It can be seen that as the viewing angle increases, the brightness decay of the second light-emitting device is greater than that of the second light-emitting device in the related art. For example, at a viewing angle of 45 degrees, the brightness decay value of the first light-emitting device in the embodiment of the present application increases by 4% compared to the brightness decay value of the first light-emitting device in the related art. This increases the brightness decay rate of the second light-emitting device at larger viewing angles, reducing the color shift of the display panel.

[0083] The second optional implementation method is Figure 12 As shown, Figure 12 This is a schematic diagram of the structure of another display panel provided by an embodiment of the present application. The first sub-optical adjustment layer 241 has a second microstructure 2412. The refractive index of the first sub-optical adjustment layer 241 is lower than that of the second sub-optical adjustment layer 24. The second microstructure 2412 includes at least one opening A3. The second sub-optical adjustment layer 242 covers the at least one opening A3. Thus, the at least one opening A3 can converge light emitted by the second light-emitting device 232.

[0084] like Figure 13 As shown, Figure 13 This is a schematic diagram of the L-Decay improvement effect of another second light emitting device in the horizontal direction with a large viewing angle provided by an embodiment of the present application. Figure 13 The meaning of the horizontal and vertical coordinates can be referred to Figure 7 The meaning of the horizontal and vertical coordinates in the embodiment of the present application will not be repeated here. Figure 13 Curves C6 and C5 in the figure can represent the brightness decay curves of the second light-emitting device at different viewing angles. Here, a photometer can be used to obtain a fourth brightness decay curve C6 of the second light-emitting device, as well as a second reference brightness decay curve C5 of a second light-emitting device in the related art without an optical adjustment layer. It can be seen that as the viewing angle increases, the brightness decay of the second light-emitting device is greater than that of the second light-emitting device in the related art. For example, at a viewing angle of 45 degrees, the brightness decay value of the first light-emitting device in the embodiment of the present application is greater than that of the first light-emitting device in the related art. This increases the brightness decay rate of the second light-emitting device at larger viewing angles, reducing the color shift of the display panel.

[0085] Alternatively, as Figure 12As shown, when the second microstructure 2412 includes at least one opening A3, the orthographic projection of the light-emitting device 23 on the substrate 21 is located within the orthographic projection of the opening A3 on the substrate 21. This allows more light beams emitted by the second light-emitting devices 232 to be incident on the at least one opening A3. This allows the light beams emitted by as many second light-emitting devices 232 as possible to be adjusted, thereby adjusting the brightness decay rate of the light beams emitted by the second light-emitting devices 232, thereby significantly reducing the color shift of the display panel.

[0086] Alternatively, as Figure 12 As shown, the side surface L3 of the opening A3 is an inclined surface, and the slope angle α of the first sub-optical adjustment layer 241 is an acute angle.

[0087] Further, such as Figure 14 and Figure 15 As shown, Figure 14 and Figure 15 The following are schematic diagrams of the partial structures of two types of openings in the second microstructure provided in embodiments of the present application. The refractive index of the first sub-optical adjustment layer 241 is 1.5, and the refractive index of the second sub-optical adjustment layer 242 is 1.7. For example, the incident angle of light s1 emitted by the second light-emitting device is θ. It is known that the critical condition for total internal reflection is a refractive angle of 90°. When light s1 is incident from the second sub-optical adjustment layer 24 onto the inclined surface L1 of the first sub-optical adjustment layer 241, according to sinθ / sin90°=1.5 / 1.7, the critical angle for total internal reflection of the inclined surface L1 is approximately 62°.

[0088] like Figure 14 As shown, when the incident angle θ of light s1 is 70° (greater than the critical angle), light s1 undergoes total reflection on the inclined surface of the first sub-optical adjustment layer 241. When the slope angle α adjacent to the total internal reflection interface is small (for example, the slope foot α is 30°), if light s1 does not undergo total internal reflection, its light output viewing angle θ1 is 80°. However, after total internal reflection, its light output viewing angle θ2 is reduced to 40°. The light output viewing angle is the angle between the emitted light and the normal H of the display surface.

[0089] like Figure 15 As shown, when the slope angle α adjacent to the total reflection interface is large (for example, the slope foot α is 60°), when the incident angle θ of the light s1 is 70° (greater than the critical angle), if the light s1 does not undergo total reflection, its light output angle θ1 is 50°, and after the light s1 undergoes total reflection, its light output angle θ2 is reduced to 10°. Similarly, when the slope angle is 70°, the light output angle of the light that does not undergo total reflection is 40°, and after total reflection, it can be converged in the direction of the normal of the display surface. That is, when the slope angle is large enough, the light emitted by the second light-emitting device can only be converged near the normal of the display surface after total reflection, thereby enhancing the light output near the normal of the display surface and improving the luminous efficiency.

[0090] Optionally, the first light-emitting device in the above embodiment may be a light-emitting device for emitting red light, and the second light-emitting device may be a light-emitting device for emitting blue light or a light-emitting device for emitting green light. For example, since the color shift of the display panel is caused by the faster viewing angle brightness decay rate of red light and the slower viewing angle brightness decay rate of blue or green light, the red light can be diffused by the first microstructure in the optical adjustment layer, and / or the blue or green light can be focused by the second microstructure in the optical adjustment layer. This ensures that the viewing angle decay rate of the red light emitted by the display panel is consistent with that of the blue or green light, thereby improving the color shift phenomenon of the display panel and further enhancing the display quality of the display panel.

[0091] Further, such as Figure 16 and Figure 17 As shown, Figure 16 It is a white light wide viewing angle CIE trajectory diagram and a schematic diagram of the degree of white light color deviation of a reference device in the related art. Figure 17 It is a white light wide viewing angle CIE trajectory diagram and a white light color deviation degree schematic diagram of the display panel in the embodiment of the present application. Among them, the CIE trajectory can be used to represent the color shift trajectory of the display panel in the embodiment of the present application in the color gamut diagram when displaying a white picture. Its horizontal coordinate Wx and vertical coordinate Wy respectively represent the chromaticity value. The white light color deviation degree schematic diagram can be used to represent the color shift curve of the display panel in the embodiment of the present application when displaying a white picture. The horizontal coordinate of the color shift curve represents the viewing angle of the display panel, and the vertical coordinate represents the color shift value, and the unit is JNCD. By Figure 16 It can be seen that the color of the display screen of the display panel in the related art becomes bluish as the viewing angle increases. The white light color deviation values are shown in Table 1 below:

[0092] Table 1 White light color deviation values in related technologies

[0093] Perspective 30° 45° 60° Color deviation degree (JNCD) 3.4 7.4 9.4

[0094] Among them, line C7 is the white light wide viewing angle CIE locus of the reference device, that is, the CIE locus. Ellipse g2, ellipse g3, and ellipse g4 represent white light color deviation values of 3, 4.5, and 6, respectively.

[0095] Depend on Figure 17 As can be seen, line C8 is the CIE locus of white light at a wide viewing angle for the embodiment of this application. As the viewing angle increases, the color of the display panel in this embodiment of the application first turns pink, then blue, and finally cyan. The white light color deviation is smaller than that of related technologies. This effectively improves the bluish color shift of the display panel at wide viewing angles. The white light color deviation values are shown in Table 2 below:

[0096] Table 2 White light color deviation values in related technologies

[0097] Perspective 30° 45° 60° Color deviation degree (JNCD) 1.2 2.6 3.8

[0098] The display substrate provided in the embodiment of the present application has a white light large viewing angle color deviation (JNCD) value that is significantly reduced compared to the reference device in the related art (for example, at 45 degrees, the JNCD value is reduced from 7.4 of the reference device to 2.6).

[0099] Optionally, the first light-emitting device may be a light-emitting device for emitting green light or a light-emitting device for emitting red light, and the second light-emitting device may be a light-emitting device for emitting blue light. For example, since color shift in a display panel is caused by the faster viewing angle brightness decay rate of green or red light and the slower viewing angle brightness decay rate of blue light, the first microstructure in the optical adjustment layer can be used to diffuse the green or red light, and / or the second microstructure in the optical adjustment layer can be used to converge the blue light. This ensures that the viewing angle decay rate of the green or red light emitted by the display panel is consistent with that of the blue light, thereby improving the color shift phenomenon of the display panel and, in turn, enhancing the display quality of the display panel.

[0100] Further, such as Figure 18 and Figure 19 As shown, Figure 18 This is a diagram showing the wide viewing angle CIE trajectory of white light and the degree of white light color deviation of another reference device in the related art. Figure 19 This is a schematic diagram of the white light wide viewing angle CIE trajectory diagram and the white light color deviation degree of another display panel in an embodiment of the present application. Figure 18 and Figure 19 The meaning of the horizontal and vertical coordinates in the above embodiment can be referred to. Figure 16 and Figure 17 The meaning of the horizontal and vertical coordinates in the embodiment of the present application will not be repeated here. Figure 18 It can be seen that the color of the display screen of the display panel in the related art becomes bluish as the viewing angle increases. The white light color deviation values are shown in Table 3 below:

[0101] Table 3 White light color deviation values in related technologies

[0102] Perspective 30° 45° 60° Color deviation degree (JNCD) 2.6 5.8 7.8

[0103] Line C9 is the white light wide-viewing angle CIE locus of the reference device. Ellipses C2, C3, and C4 represent white light color deviations of 3, 4.5, and 6, respectively.

[0104] Depend on Figure 19As can be seen, line C10 represents the wide-viewing angle CIE locus of white light in the embodiment of this application. As the viewing angle increases, the CIE locus of the display panel in this embodiment of this application becomes significantly shorter, and the bluish color tendency is significantly reduced. Starting at 45°, the color deviation of the visual angle decreases significantly. This white light color deviation is smaller than that of related technologies. This effectively improves the bluish color shift of the display panel at wide viewing angles. The white light color deviation values are shown in Table 4 below:

[0105] Table 4 White light color deviation values in related technologies

[0106] Perspective 30° 45° 60° Color deviation degree (JNCD) 2.7 3.0 1.5

[0107] The display substrate provided in the embodiment of the present application has a white light wide viewing angle color deviation (JNCD) value that is significantly reduced compared to the reference device in the related art (for example, at 60 degrees, the JNCD value is reduced from 7.8 of the reference device to 1.5).

[0108] Alternatively, as Figure 20 and Figure 21 As shown, Figure 20 is a structural diagram of another display panel provided in an embodiment of the present application. Figure 21 yes Figure 20 The display panel 20 may further include an encapsulation layer 26 , and the optical adjustment layer 24 may be located on a side of the encapsulation layer 26 facing away from the substrate 21 .

[0109] Alternatively, as Figure 22 and Figure 23 As shown, Figure 22 is a structural diagram of another display panel provided in an embodiment of the present application. Figure 23 yes Figure 22 The display panel 20 may further include an encapsulation layer 26 , and the optical adjustment layer 24 may be located on a side of the encapsulation layer 26 close to the substrate 21 .

[0110] It should be noted that the optical adjustment layer in the embodiments of the present application can be located on any film layer on the side of the light-emitting device facing away from the substrate, or the optical adjustment layer can be integrated with the existing film layer in the display panel. For example, the optical adjustment layer can be integrated with the touch layer or the color resist layer.

[0111] Alternatively, as Figure 24 As shown, Figure 24 This is a schematic diagram of the structure of another display panel provided by an embodiment of the present application. The first sub-optical adjustment layer 241 includes at least two stacked insulating layers (a first insulating layer 2413 and a second insulating layer 2414 are used as an example in this embodiment). The display panel 20 also includes a touch layer 25 located between any two insulating layers (the first insulating layer 2413 and the second insulating layer 2414).

[0112] The touch layer 25 may include a first touch metal layer 251 and a second touch metal layer 252. The first metal layer 251 may be composed of titanium (Ti) with a thickness of 0.03 microns, aluminum (Al) with a thickness of 0.3 microns, and titanium (Ti) with a thickness of 0.03 microns, stacked in sequence. The second touch metal layer 252 may have the same structure as the first touch metal layer 251.

[0113] The first sub-optical adjustment layer 241 may further include a third insulating layer 2415. The first insulating layer 2413 may be a buffer layer ("buffer"), which can be formed by wet coating and curing, or by full-surface deposition, and may have a thickness of 2 to 3 microns. The second insulating layer 2414 may be an interlayer dielectric ("ILD"), which can be formed by full-surface deposition, and may have a thickness of 2 to 3 microns. The third insulating layer 2415 may be a first protective layer ("overcoat 1" or "OC1"), which can be formed by full-surface deposition, and may have a thickness of 2 to 3 microns.

[0114] Furthermore, the first insulating layer 2413, the second insulating layer 2414, and the third insulating layer 2415 may be made of the same material. For example, the first insulating layer 2413, the second insulating layer 2414, and the third insulating layer 2415 may be made of the same PI material.

[0115] Alternatively, as Figure 24 As shown, the multiple light-emitting devices may include a light-emitting device 23B for emitting blue light, a light-emitting device 23G for emitting green light, and a light-emitting device 23R for emitting red light. When the rate of luminance decay (L-Decay) of the light beam emitted by the light-emitting device 23R for emitting red light is greater than the rate of luminance decay (L-Decay) of the light beam emitted by the light-emitting device 23B for emitting blue light and the light-emitting device 23G for emitting green light as the viewing angle increases, the first sub-optical adjustment layer 241 may be provided with a second microstructure on a side of the light-emitting device 23B for emitting blue light and the light-emitting device 23G for emitting green light away from the substrate 21. The second sub-optical adjustment layer 242 may cover the first and second openings A3B and A3G. The material of the second sub-optical adjustment layer 242 may be an optically clear adhesive (OCA). The refractive index of the optically clear adhesive is greater than that of the first sub-optical adjustment layer 241.

[0116] The dimensions of the first opening A3B and the second opening A3G in a direction parallel to the substrate 21 can increase as they move away from the substrate 21. Under the same etching process conditions, as the film thickness increases, the slope angle increases after etching. Therefore, as described above, the slope angle of the buffer, ILD, and OC1 is larger when etching as a whole compared to etching a single layer, making it easier to converge light through total internal reflection near the normal of the display panel (i.e., the normal viewing angle of the display panel). Specifically, when the incident angle of light is greater than the critical angle, total reflection can occur at the inclined surface of the first sub-optical adjustment layer 241. When the slope angle is equal to the incident angle of the light, light emitted by the light-emitting device can be converged through total internal reflection to the normal viewing angle of the display panel. For example, by setting the refractive index of the buffer, ILD, and OC1 to 1.3 and the refractive index of the OCA to 1.9, the critical angle can be reduced to approximately 43°. It is also possible to achieve a larger slope angle through overall etching of the buffer, ILD and OC1, so that the light that originally had a larger light output angle can be converged to a positive angle through total reflection. While improving the color deviation of white light with a large viewing angle, it can also improve luminous efficiency and reduce power consumption.

[0117] The orthographic projection of the blue-light emitting device 23B on the substrate 21 is located within the orthographic projection of the bottom surface of the first aperture A3B on the substrate 21. The distance between the edge of the bottom surface of the first aperture A3B and the edge of the orthographic projection of the blue-light emitting device 23B is greater than 5 microns. The orthographic projection of the green-light emitting device 23G on the substrate 21 is located within the orthographic projection of the bottom surface of the second aperture A3G on the substrate 21. The distance between the edge of the bottom surface of the second aperture A3G and the edge of the orthographic projection of the green-light emitting device 23G is greater than 5 microns.

[0118] In this way, more blue light can be incident on the first opening A3B, and green light can be incident on the second opening A3G. That is, in the light-emitting state, when at least part of the light emitted by the light-emitting device 23B for emitting blue light and the light-emitting device 23G for emitting green light passes through the second adjustment layer 242 with a higher refractive index and reaches the inclined surface of the first opening A3B and the second opening A3G, if the incident angle of the light is greater than the critical angle, total reflection will occur. This will reduce its light output angle. As a result, the light emitted by the light-emitting device 23B for emitting blue light and the light-emitting device 23G for emitting green light converge. The above technical solution effectively accelerates the wide-angle L-Decay of blue light and green light, thereby achieving wide-angle L-Decay matching of the three colors of red, green and blue, and improving the phenomenon of bluish white light at wide viewing angles of the display panel. And there is no need to change the film thickness of the display panel.

[0119] like Figure 25 As shown, Figure 25 yes Figure 24The touch layer 25 has a plurality of touch openings. The first opening A3B and the second opening A3G are respectively located within the orthographic projection of the corresponding touch openings on the substrate.

[0120] For example, the distance between adjacent light-emitting devices can be 18 to 23 microns, and the width of the metal pattern traces in the first and second metal layers of the touch layer 25 is 3 microns. Furthermore, the distance between the orthographic projection of the second adjustment portion on the substrate and the orthographic projection of the metal traces of the touch layer on the substrate is greater than 2 microns. The minimum distance between the edges of the projections of the first and second openings A3B and A3G on the substrate 21 and the edges of the corresponding touch openings is 2 microns. That is, the distance D1 between the first and second openings A3B and A3G in a direction parallel to the substrate 21 is greater than or equal to 7 microns. This prevents damage to the metal traces of the touch layer 25 during etching of the first adjustment layer 241.

[0121] like Figure 26 and Figure 27 As shown, Figure 26 This is a schematic diagram of the L-Decay improvement effect of a light-emitting device for emitting blue light in a horizontal direction with a large viewing angle provided by an embodiment of the present application. Figure 27 This is a schematic diagram of the L-Decay improvement effect of a light-emitting device for emitting green light in a horizontal direction with a large viewing angle provided by an embodiment of the present application. Figure 26 The meaning of the horizontal and vertical coordinates can be referred to above Figure 7 The meaning of the horizontal and vertical coordinates in . To this end, Figure 26 Curves C11 and C12 in can represent brightness attenuation curves of a light-emitting device for emitting blue light at different viewing angles. Figure 27Curves C13 and C14 in the figure represent the brightness decay curves of a light-emitting device emitting green light at different viewing angles. C11 is the brightness decay curve of the light-emitting device emitting green light in the embodiment of the present application, C12 is the reference brightness decay curve of a light-emitting device emitting green light in the related art without an optical adjustment layer, C13 is the brightness decay curve of the light-emitting device emitting blue light in the embodiment of the present application, and C14 is the reference brightness decay curve of a light-emitting device emitting blue light in the related art without an optical adjustment layer. It can be seen that as the viewing angle increases, the brightness of the light-emitting device emitting blue light and the light-emitting device emitting green light decays more than that of the blue reference light-emitting device and the green reference light-emitting device in the related art. For example, at a viewing angle of 30 degrees, the brightness of the blue reference device is 70% of its maximum brightness, the brightness of the light-emitting device emitting blue light in the embodiment of the present application is 60% of its maximum brightness, the brightness of the green reference device is 76% of its maximum brightness, and the brightness of the light-emitting device emitting green light in the embodiment of the present application is 65% of its maximum brightness. In this way, the brightness attenuation of the light emitting device for emitting blue light and the light emitting device for emitting green light at a larger viewing angle can be increased, so as to reduce the color shift of the display panel.

[0122] Figure 28 This is a schematic diagram illustrating the improvement of horizontal white light color deviation at large viewing angles provided by an embodiment of the present application. This diagram can be used to represent the color deviation curve of the display panel in the embodiment of the present application when displaying a white image. The abscissa of this color deviation curve represents the viewing angle of the display panel, and the ordinate represents the color deviation value, measured in JNCD. The reference device is a display substrate without an optical adjustment layer. The display substrate provided by the embodiment of the present application exhibits a significantly reduced JNCD value for large viewing angle color deviation in white light compared to the reference device (for example, at 60 degrees, the JNCD value is reduced from 4.1 for the reference device to 0.3).

[0123] Figure 29 It is a schematic diagram of the CIE1976 trajectory of another display panel provided in an embodiment of the present application. Here, the CIE1976 trajectory diagram can be used to represent the color shift trajectory of the display panel in the embodiment of the present application in the color gamut diagram when displaying a white picture. Its horizontal and vertical coordinates respectively represent the chromaticity values. Line C15 is the CIE1976 trajectory diagram of the reference device, and line C16 is the CIE1976 trajectory diagram of the display substrate provided in an embodiment of the present application. For the display substrate provided in an embodiment of the present application, the white light CIE trajectory first turns purple (0 degrees to 45 degrees) and then turns blue (45 degrees to 80 degrees) as the viewing angle increases, which can effectively alleviate the blue visual effect of the display panel at a large viewing angle.

[0124] Alternatively, as Figure 30 As shown, Figure 302 is a schematic diagram of the structure of another display panel provided by an embodiment of the present application. The display panel 20 may further include a black matrix 27 and a color resist layer 28. The black matrix 27 and the color resist layer 28 are located on the side of the optical adjustment layer away from the substrate 21. The encapsulation layer 26 is located between the pixel defining layer 22 and the color resist layer 28. The color resist layer 28 may be a color filter film and may be 3 microns thick. The black matrix 27 may be 1.3 microns thick.

[0125] Optionally, the display panel 20 further includes a second protective layer 29 disposed on the side of the black matrix 27 away from the backplane, which not only isolates water and oxygen but also prevents the display panel 20 from being damaged by natural or external forces. The thickness of the second protective layer 29 can be 2 to 3 microns.

[0126] Alternatively, as Figure 31 and Figure 32 As shown, Figure 31 is a structural diagram of another display panel provided in an embodiment of the present application. Figure 32 yes Figure 31 A top view of the display panel is shown. The multiple light-emitting devices 23 may include a light-emitting device 23B for emitting blue light, a light-emitting device 23G for emitting green light, and a light-emitting device 23R for emitting red light. When the rate of luminance decay (L-Decay) of the light beam emitted by the light-emitting device 23R for emitting red light as the viewing angle increases is less than the rate of luminance decay (L-Decay) of the light beam emitted by the light-emitting device 23B for emitting blue light and the light-emitting device 23G for emitting green light as the viewing angle increases, the first sub-optical adjustment layer 241 may be provided with a second microstructure on the side of the light-emitting device 23R for emitting red light away from the substrate 21. This second microstructure may be a third opening A3R. The second sub-optical adjustment layer 242 may cover the third opening A3R. The material of the second sub-optical adjustment layer 242 may be an optically transparent adhesive with a refractive index greater than that of the first sub-optical adjustment layer 241.

[0127] like Figure 33 As shown, Figure 33 2 is a schematic diagram of the structure of another display panel provided by an embodiment of the present application. Display panel 20 further includes an encapsulation layer 26, a black matrix 27, and a color resist layer 28. Black matrix 27 and color resist layer 28 are located on the side of optical adjustment layer 24 away from substrate 21, and encapsulation layer 26 is located between pixel definition layer 22 and color resist layer 28.

[0128] In summary, embodiments of the present application provide a display panel comprising: a substrate, a pixel defining layer, a light-emitting device, and an optical adjustment layer. The attenuation rate of light emitted by a first light-emitting device is higher than the attenuation rate of light emitted by a second light-emitting device. The optical adjustment layer can adjust the light emitted by either the first or second light-emitting device. Alternatively, the optical adjustment layer can adjust the light emitted by both the first and second light-emitting devices simultaneously. Therefore, the angle of emission of light emitted by the first light-emitting device from the display panel can be increased, or the angle of emission of light emitted by the second light-emitting device from the display panel can be decreased. Alternatively, the angle of emission of light emitted by the first light-emitting device from the display panel can be increased while the angle of emission of light emitted by the second light-emitting device from the display panel is decreased. This avoids the phenomenon of inconsistent attenuation rates of light emitted by OLED devices of different colors at wide viewing angles. This also prevents color shift when displaying images on the display panel at different viewing angles. This improves the display quality of the display panel.

[0129] According to another aspect of the present application, a display device is provided, comprising: a power supply component and a display panel, wherein the power supply component is configured to supply power to the display panel. The display panel may be any of the display panels described above.

[0130] In this application, the term "and / or" simply describes an association between related objects, indicating that three possible relationships exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0131] It should be noted that in the accompanying drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. It will also be understood that when an element or layer is referred to as being "on" another element or layer, it may be directly on the other element, or there may be an intermediate layer. In addition, it will be understood that when an element or layer is referred to as being "under" another element or layer, it may be directly under the other element, or there may be more than one intermediate layer or element. In addition, it will also be understood that when a layer or element is referred to as being "between" two layers or elements, it may be the only layer between the two layers or elements, or there may also be more than one intermediate layer or element. Similar reference numerals throughout the text indicate similar elements.

[0132] In this application, the terms "first", "second" and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless expressly limited otherwise.

[0133] The above description is merely an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A display panel, characterized in that: include: substrate; a pixel defining layer located on the substrate, wherein the pixel defining layer is used to divide the substrate into a plurality of pixel areas; a light-emitting device located in the pixel area, wherein the plurality of light-emitting devices include a first light-emitting device and a second light-emitting device, wherein a decay rate of light emitted by the first light-emitting device is higher than a decay rate of light emitted by the second light-emitting device; and an optical adjustment layer located on a side of the pixel defining layer away from the substrate; The optical adjustment layer is used to adjust the light emitted by the first light-emitting device to increase the emission angle of the light emitted by the first light-emitting device when it is emitted from the display panel, and the optical adjustment layer is also used to adjust the light emitted by the second light-emitting device to reduce the emission angle of the light emitted by the second light-emitting device when it is emitted from the display panel; The optical adjustment layer includes: a first sub-optical adjustment layer and a second sub-optical adjustment layer; wherein the first sub-optical adjustment layer has a first microstructure and a second microstructure; the orthographic projection of the first light-emitting device on the substrate is located within the orthographic projection of the first microstructure on the substrate; and the orthographic projection of the second light-emitting device on the substrate is located within the orthographic projection of the second microstructure on the substrate; the first microstructure is used to diffuse light emitted by the first light-emitting device, and the second microstructure is used to converge light emitted by the second light-emitting device; the second sub-optical adjustment layer covers the first and second microstructures, and the refractive index of the first sub-optical adjustment layer is less than the refractive index of the second sub-optical adjustment layer; The second microstructure includes at least one opening, wherein a dimension of the opening in a direction parallel to the substrate increases in a direction away from the substrate; a distance between an edge of an orthographic projection of a bottom surface of the opening on the substrate and an edge of an orthographic projection of a corresponding second light-emitting device on the substrate is greater than 5 microns; The first sub-optical adjustment layer comprises: three insulating layers stacked together, the three insulating layers being made of the same material, and the openings being formed by etching the entire three insulating layers; The display panel also includes: a touch layer located between any two of the insulating layers, the touch layer having a plurality of touch openings, the orthographic projections of the openings on the substrate being located within the orthographic projections of the corresponding touch openings on the substrate; and a distance between two adjacent openings in a direction parallel to the substrate being greater than or equal to 7 microns.

2. The display panel according to claim 1, wherein: The first sub-optical adjustment layer has the first microstructure, the refractive index of the first sub-optical adjustment layer is smaller than the refractive index of the second sub-optical adjustment layer, and the first microstructure includes at least one protrusion, and the protrusion has a curved surface facing the second sub-optical adjustment layer.

3. The display panel according to claim 1, wherein: The orthographic projection of the light emitting device on the substrate is located within the orthographic projection of the opening on the substrate.

4. The display panel according to claim 3, wherein: The side surface of the opening is an inclined surface, and the slope angle of the first sub-optical adjustment layer is an acute angle.

5. The display panel according to any one of claims 1 to 4, characterized in that: The display panel further includes: an encapsulation layer, a black matrix and a color resist layer. The black matrix and the color resist layer are located on a side of the optical adjustment layer away from the substrate. The encapsulation layer is located between the pixel defining layer and the color resist layer.

6. A display device, characterized in that: include: A power supply component, and the display panel according to any one of claims 1 to 5, wherein the power supply component is used to supply power to the display panel.

Images