Display panel and display device

Abstract

This application relates to a display panel and display device. It includes: a substrate; a light-emitting layer located on one side of the substrate, including a plurality of first light-emitting devices; a first optical coupling layer located on the side of the light-emitting layer facing away from the substrate, the first optical coupling layer having a first through-hole; an optical path adjustment layer located on the side of the first optical coupling layer facing away from the substrate, the optical path adjustment layer including a plurality of optical path adjustment components, the optical path adjustment components including a first dimming part and a second dimming part, the first dimming part being located within the first through-hole; the second dimming part being located on the side of the first dimming part facing away from the substrate; along the thickness direction of the substrate, the sidewall of the first dimming part is inclined towards the center away from the first through-hole, and the sidewall of the second dimming part is inclined towards the center close to the first through-hole; a second optical coupling layer located on the side of the first optical coupling layer facing away from the substrate; wherein the refractive index of the optical path adjustment component is greater than the refractive index of either the first optical coupling layer or the second optical coupling layer.

Description

Technical Field

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

[0002] With the continuous development of display technology, the demand for display panels is increasing. Currently, to improve the privacy protection effect, privacy screens typically reduce the pixel aperture of the pixel definition layer, resulting in a lower aperture ratio of the display panel. To ensure the lifespan of the display panel, the brightness of the display panel is reduced, affecting the display effect. Summary of the Invention

[0003] Based on this, embodiments of this application provide a display panel and a display device that can improve the display brightness of the display panel and enhance the display effect while ensuring the service life of the display panel.

[0004] On one hand, embodiments of this application provide a display panel, including:

[0005] substrate;

[0006] The light-emitting layer, located on one side of the substrate, includes multiple first light-emitting devices;

[0007] The first optical coupling layer is located on the side of the light-emitting layer away from the substrate, and the first optical coupling layer has a first through hole;

[0008] An optical path adjustment layer is located on the side of the first optical coupling layer away from the substrate. The optical path adjustment layer includes a plurality of optical path adjustment components. At least some of the optical path adjustment components are correspondingly disposed on the light output path of the first light-emitting device. The optical path adjustment components include a first dimming part and a second dimming part. The first dimming part is located inside the first through hole. The second dimming part is located on the side of the first dimming part away from the substrate. Along the thickness direction of the substrate, the sidewall of the first dimming part is inclined away from the center of the first through hole, and the sidewall of the second dimming part is inclined close to the center of the first through hole.

[0009] The second optical coupling layer is located on the side of the first optical coupling layer away from the substrate, and the second optical coupling layer covers the optical path adjustment component;

[0010] The refractive index of the optical path adjustment component is greater than that of either the first optical coupling layer or the second optical coupling layer.

[0011] On the other hand, embodiments of this application provide a display device, including the display panel provided in the foregoing embodiments of this application.

[0012] The display panel and display device provided in this application embodiment have an emissive layer on one side of a substrate, the emissive layer including a plurality of first light-emitting devices; thus, image display can be achieved by controlling the light emission of different first light-emitting devices; a first optical coupling layer is provided on the side of the emissive layer away from the substrate, and a first through hole is provided in the first optical coupling layer; an optical path adjustment layer is provided on the side of the first optical coupling layer away from the substrate, the optical path adjustment layer including a plurality of optical path adjustment components, at least some of the optical path adjustment components being disposed one-to-one on the light emission path of the first light-emitting devices; the optical path adjustment components include a first dimming part and a second dimming part, the first dimming part being located in the first through hole, and the second dimming part being located on the side of the first dimming part away from the substrate; along the thickness direction of the substrate, the sidewall of the first dimming part is set to be inclined toward the center away from the first through hole, and the sidewall of the second dimming part is set to be inclined toward the center close to the first through hole; a second optical coupling layer is provided on the side of the first optical coupling layer away from the substrate, the second optical coupling layer covering the optical path adjustment components, and the refractive index of the optical path adjustment components is set to be greater than the refractive index of either the first optical coupling layer or the second optical coupling layer. Thus, when the light emitted by the first light-emitting device illuminates the sidewall of the first dimming unit, it undergoes total internal reflection, thereby adjusting the light path of the light emitted by the first light-emitting device to propagate along the thickness direction of the substrate, reducing the divergence angle of the light emitted by the first light-emitting device. Furthermore, when the light emitted by the first light-emitting device illuminates the sidewall of the second dimming unit, the light travels from a medium with a high refractive index to a medium with a low refractive index, causing the light to deflect and refract along the thickness direction of the substrate, further reducing the divergence angle of the light emitted by the first light-emitting device. In other words, by adjusting the exit angle of the light emitted by the first light-emitting device through the first and second dimming units, the light emitted by the first light-emitting device is concentrated, reducing the amount of light blocked by the first light-emitting device and increasing the brightness of the light transmitted from the first light-emitting device through the display panel, thereby improving the overall display brightness and display effect of the display panel. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a display panel provided in some embodiments of this application.

[0014] Figure 2 This is a schematic diagram of another structure of the display panel provided in some embodiments of this application.

[0015] Figure 3 This is another structural schematic diagram of a display panel provided in some embodiments of this application.

[0016] Figure 4 This is another structural schematic diagram of a display panel provided in some embodiments of this application.

[0017] Figure 5 This is another structural schematic diagram of a display panel provided in some embodiments of this application.

[0018] Figure 6 This is another structural schematic diagram of a display panel provided in some embodiments of this application.

[0019] Figure 7 This is another structural schematic diagram of a display panel provided in some embodiments of this application.

[0020] Figure 8 This is a top view structural diagram of a display panel provided in some embodiments of this application.

[0021] Figure 9 This is a top view schematic diagram of another display panel structure provided in some embodiments of this application.

[0022] Explanation of reference numerals in the attached figures:

[0023] 10-Display panel;

[0024] 11-Substrate; 12-Pixel definition layer; 13-Emitting layer; 13a-Emitting unit; 14-First optical coupling layer; 15-Optical path adjustment layer; 15a-First microlens array; 15b-Second microlens array; 16-Second optical coupling layer; 17-First light blocking layer; 18-Second light blocking layer;

[0025] 121 - Pixel opening; 131 - First light-emitting device; 132 - Second light-emitting device; 141 - First through hole; 151 - Optical path adjustment component; 15a1 - First microlens; 15b1 - Second microlens; 171 - Second through hole; 181 - Third through hole;

[0026] 1511 - First dimming section; 1512 - Second dimming section. Detailed Implementation

[0027] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0028] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0029] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0032] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0033] Figure 1 This is a schematic diagram of the structure of a display panel provided in some embodiments of this application.

[0034] In some examples, refer to Figure 1 As shown, this application embodiment provides a display panel 10. The display panel 10 may include a substrate 11.

[0035] In some examples, substrate 11 can serve as a support base for display panel 10. Substrate 11 may include either glass substrate 11 or flexible substrate 11. Substrate 11 may be the same as, similar to or similar to substrate 11 in related technologies, as detailed in the related technologies, and will not be repeated here in the embodiments of this application.

[0036] In some examples, the display panel 10 may include a light-emitting layer 13. The light-emitting layer 13 may be located on one side of the display substrate 11.

[0037] In some examples, the light-emitting layer 13 may include a plurality of first light-emitting devices 131. The plurality of first light-emitting devices 131 may be arranged at intervals on one side of the display panel 10.

[0038] In some examples, the first light-emitting device 131 may include at least one of a light-emitting diode (LED), an organic light-emitting diode (OLED), or a micro light-emitting diode (Micro-LED).

[0039] In some examples, the emission color of multiple first light-emitting devices 131 may be the same.

[0040] In some examples, the emission colors of the multiple first light-emitting devices 131 may be different. For example, some of the first light-emitting devices 131 may emit red (R) light, some of the first light-emitting devices 131 may emit green (G) light, and another part of the first light-emitting devices 131 may emit blue (B) light.

[0041] It is understood that in some examples of the embodiments of this application, the emission color of the first light-emitting device 131 is only used as a specific example for illustration, and is not intended to limit the emission color of the first light-emitting device 131.

[0042] In some examples, with the diversification of requirements for display panel 10, refer to Figure 1 As shown, the display panel 10 may include a first light-blocking layer 17. The first light-blocking layer 17 may be located on the side of the light-emitting layer 13 opposite to the display panel 10.

[0043] In some instances, the first light-blocking layer 17 can be made of an opaque material. For example, the first light-blocking layer 17 can be a black matrix (BM).

[0044] In some examples, the first light-blocking layer 17 may have a second through hole 171, which may be disposed opposite to the first light-emitting device 131.

[0045] In some examples, the orthographic projection of the second through hole 171 onto the substrate 11 may overlap with the orthographic projection of the first light-emitting device 131 onto the substrate 11.

[0046] In some examples, the orthographic projection of the second through hole 171 onto the substrate 11 can cover the orthographic projection of the first light-emitting device 131 onto the substrate 11.

[0047] In some examples, the light emitted by the first light-emitting device 131 can pass through the second through hole 171 and be transmitted toward the outside of the display panel 10.

[0048] In some examples, the first light-blocking layer 17 can block the lines between adjacent first light-emitting devices 131, reduce the reflected light from the lines between adjacent first light-emitting devices 131, and improve the display effect of the display panel 10.

[0049] In some examples, refer to Figure 1 As shown, in order to adjust the light emission angle of the display panel 10, in some examples of embodiments of this application, the display panel 10 may include a second light-blocking layer 18. The second light-blocking layer 18 may be located on the side of the first light-blocking layer 17 that is away from the substrate 11.

[0050] In some examples, the material and arrangement of the second light-blocking layer 18 may be the same as, similar to or similar to the first light-blocking layer 17. For details, please refer to the detailed description of the first light-blocking layer 17 in the foregoing embodiments of this application. The embodiments of this application will not repeat the details.

[0051] In some examples, the second light-blocking layer 18 may have a third through-hole 181, which may be positioned opposite to the second through-hole 171.

[0052] In some examples, the third through hole 181 may overlap with the second through hole 171 along the thickness direction of the substrate 11. In other words, the orthographic projection of the third through hole 181 on the substrate 11 may overlap with the orthographic projection of the second through hole 171 on the substrate 11.

[0053] In some examples, the opening area of ​​the third through hole 181 may be less than or equal to the opening area of ​​the second through hole 171.

[0054] In some examples, the opening area of ​​the third through hole 181 can be equal to the opening area of ​​the second through hole 171.

[0055] In some examples, the opening area of ​​the third through hole 181 may be smaller than the opening area of ​​the second through hole 171.

[0056] In some examples, the light emitted by the first light-emitting device 131 can pass through the third through hole 181 and be transmitted outward to the display panel 10.

[0057] In some examples of embodiments of this application, a second light-blocking layer 18 is provided on the side of the first light-blocking layer 17 facing away from the substrate 11. In this way, the large-angle light emitted by the first light-emitting device 131 can be blocked by the second light-blocking layer 18, the light emission direction of the first light-emitting device 131 can be controlled, the large-angle light of the display panel 10 is reduced, and it is beneficial to control the viewing angle range of the display panel 10.

[0058] In some examples, to improve the blocking effect of the display panel 10 on wide-angle light and enhance the control over the viewing angle range of the display panel 10, it is usually necessary to reduce the size of the pixel aperture 121 of the pixel definition layer 12.

[0059] In some examples, the pixel definition layer 12 may be located on the substrate 11. The first light-emitting device 131 may be located within the pixel opening 121.

[0060] In some examples, the larger the opening area of ​​pixel aperture 121, the weaker the blocking effect of the second light-blocking layer 18 on light from a wide viewing angle. Conversely, the smaller the opening area of ​​pixel aperture 121, the stronger the blocking effect of the second light-blocking layer 18 on light from a wide viewing angle.

[0061] In some examples, the relationship between the radial dimension of pixel aperture 121 and the brightness at a 45° viewing angle is shown in the table below:

[0062] Opening radial dimension (μm) 11 12 13 14 15 16 45° viewing angle brightness 0.34% 0.29% 0.27% 1.24% 4.32% 7.23%

[0063] It can be seen that in order to effectively control the light from the wide viewing angle of the display panel 10, the aperture area of ​​the pixel aperture 121 is usually required to be less than or equal to 13μm.

[0064] It should be noted that the numerical values ​​and ranges involved in the embodiments of this application are approximate values. Due to the influence of the manufacturing process, there may be a certain range of errors, which can be considered negligible by those skilled in the art.

[0065] It is understandable that as the opening area of ​​pixel aperture 121 decreases, the light-emitting area of ​​the first light-emitting device 131 also decreases, affecting the display brightness of the display panel 10. To ensure the display brightness of the display panel 10, it is usually necessary to increase the current density of the display panel 10. However, increasing the current density may reduce the lifespan of the display panel 10, thus affecting its overall lifespan.

[0066] Figure 2 This is a schematic diagram of another structure of the display panel provided in some embodiments of this application.

[0067] In some examples, this is done to improve the display brightness of the display panel 10 and ensure its lifespan. (See reference...) Figure 2 As shown, in some examples of embodiments of this application, the display panel 10 may include a first optical coupling layer 14. The first optical coupling layer 14 may be located on the side of the light-emitting layer 13 facing away from the substrate 11.

[0068] In some examples, refer to Figure 2 As shown, the first optical coupling layer 14 can be located on the side of the first light blocking layer 17 away from the substrate 11. That is, the light emitted by the first light-emitting device 131 can be transmitted through the second through hole 171 to the first optical coupling layer 14, and then transmitted from the first optical coupling layer 14 toward the outside of the display panel 10.

[0069] In some examples, the first optical coupling layer 14 can be used as a planarization layer to planarize the second through-hole 171 of the first light blocking layer 17.

[0070] In some examples, refer to Figure 2 As shown, the display panel 10 may include a first microlens array 15a. The first microlens array 15a may be located on the side of the first optical coupling layer 14 facing away from the substrate 11.

[0071] In some examples, the first microlens array 15a may include a plurality of first microlenses 15a1. The plurality of first microlenses 15a1 may be configured in a one-to-one correspondence with a plurality of first light-emitting devices 131. That is, one first microlens 15a1 is disposed on the light-emitting side of each first light-emitting device 131. Thus, referring to... Figure 2 As shown, the sidewall of the first microlens 15a1 can refract the large-angle light emitted by the first light-emitting device 131 (e.g., Figure 2 The optical path shown by the middle arrow a) can increase the display brightness of the display panel 10 and extend the service life of the display panel 10.

[0072] In some examples, taking a pixel aperture 121 with a size of 10μm*10μm as an example, by setting a first microlens array 15a on the side of the first optical coupling layer 14 away from the substrate 11 to refract the large-angle light emitted by the first light-emitting device 131, the display brightness of the display panel 10 can be increased by 50.9% compared with the display panel 10 without the first microlens array 15a. The increased display brightness of the display panel 10 can extend the service life of the display panel 10 under the same display brightness.

[0073] In some examples, refer to Figure 2 As shown, although the first microlens array 15a can refract some of the large-angle light emitted by the first light-emitting device 131, some of the large-angle light is still blocked by the second light-blocking layer 18, which reduces the amount of light emitted by the first light-emitting device 131 and affects the display brightness of the display panel 10.

[0074] Figure 3 This is another structural schematic diagram of a display panel provided in some embodiments of this application.

[0075] In some examples, refer to Figure 3 As shown, the first optical coupling layer 14 may have a first through hole 141. The first through hole 141 may penetrate the first optical coupling layer 14 located within the second through hole 171.

[0076] In some examples, refer to Figure 3 As shown, the display panel 10 may include a second microlens array 15b layer. The second microlens array 15b layer may include a plurality of second microlenses 15b1. The second microlenses 15b1 may be disposed within the first through hole 141.

[0077] In some examples, multiple second microlenses 15b1 can be configured in a one-to-one correspondence with multiple first through holes 141. That is, a second microlens 15b1 can be disposed within a single first through hole 141. Thus, referring to... Figure 3 As shown, the sidewall of the second microlens 15b1 can perform total internal reflection of the large-angle light emitted by the first light-emitting device 131 (e.g., Figure 3 The optical path shown by the middle arrow c can increase the display brightness of the display panel 10 and extend the service life of the display panel 10.

[0078] In some examples, taking a pixel aperture 121 with a size of 10μm*10μm as an example, by setting a first through hole 141 in the first optical coupling layer 14, the first through hole 141 penetrates a portion of the first optical coupling layer 14 located in the second through hole 171, and a second microlens 15b1 is set in the first through hole 141, compared with the display panel 10 that does not use the first microlens array 15a and the second microlens array 15b layers, the display brightness of the display panel 10 can be increased by 96.0%, thus improving the display brightness of the display panel 10 and extending the service life of the display panel 10 under the same display brightness.

[0079] Figure 4 This is another structural schematic diagram of a display panel provided in some embodiments of this application.

[0080] In some examples, refer to Figure 4 As shown, in some examples of embodiments of this application, the display panel 10 may include an optical path adjustment layer 15. The optical path adjustment layer 15 may be at least one of the first microlens array 15a and the second microlens array 15b layers described in detail in the foregoing embodiments of this application.

[0081] In some examples, the optical path adjustment layer 15 may be located on the side of the first optical coupling layer 14 away from the substrate 11.

[0082] In some examples, refer to Figure 4 As shown, the optical path adjustment layer 15 may include a plurality of optical path adjustment components 151. At least some of the plurality of optical path adjustment components 151 may be disposed one-to-one on the light output optical path of the first light-emitting device 131. That is, one optical path adjustment component 151 may be provided on the light output optical path of one first light-emitting device 131.

[0083] In some examples, refer to Figure 4 As shown, the optical path adjustment component 151 may include a first dimming unit 1511. The first dimming unit 1511 may be located within the first through hole 141.

[0084] In some examples, the first dimming unit 1511 may be the same as, similar to or similar to the second microlens 15b1 described in detail in the foregoing embodiments of this application. For details, please refer to the detailed description of the second microlens 15b1 in the foregoing embodiments of this application. This application will not repeat the description in this embodiment.

[0085] In some examples, along the thickness direction of substrate 11 (e.g.) Figure 4(As shown by the y-axis), the sidewall of the first dimming part 1511 can be inclined toward the center away from the first through hole 141. In other words, in some examples of embodiments of this application, the overall shape of the first dimming part 1511 can be an inverted cone shape along the stacking direction of the substrate 11 and the light-emitting layer 13.

[0086] In some examples, refer to Figure 4 As shown, the optical path adjustment component 151 may include a second dimming unit 1512. The second dimming unit 1512 may be located on the side of the first dimming unit 1511 that is away from the substrate 11.

[0087] In some examples, the second dimming unit 1512 may be the same as, similar to or similar to the first microlens 15a1 described in detail in the foregoing embodiments of this application. For details, please refer to the detailed description of the first microlens 15a1 in the foregoing embodiments of this application. This application will not repeat the description in detail.

[0088] In some examples, refer to Figure 4 As shown, along the thickness direction of the substrate 11, the sidewall of the second dimming section 1512 can be inclined toward the axis close to the first through hole 141. In other words, in some examples of embodiments of this application, along the stacking direction of the substrate 11 and the light-emitting layer 13, the overall shape of the second dimming section 1512 can be conical.

[0089] In some examples, refer to Figure 4 As shown, the display panel 10 may include a second optical coupling layer 16. The second optical coupling layer 16 may be located on the side of the first optical coupling layer 14 that faces away from the substrate 11.

[0090] In some examples, refer to Figure 4 As shown, the second optical coupling layer 16 can cover the optical path adjustment component 151.

[0091] In some examples, the second optical coupling layer 16 may be the same as, similar to or similar to the first optical coupling layer 14. For details, please refer to the detailed description of the first optical coupling layer 14 in the foregoing embodiments of this application. The embodiments of this application will not repeat the details.

[0092] In some examples, the refractive index of the optical path adjustment component 151 can be greater than the refractive index of the first optical coupling layer 14 and the second optical coupling layer 16. Thus, referring to... Figure 4 The optical path indicated by the middle arrow d shows that the large-angle light emitted by the first light-emitting device 131 can undergo total internal reflection at the side wall of the first dimming section 1511. (Refer to...) Figure 4As indicated by the middle arrow e, the large-angle light emitted by the first light-emitting device 131 is refracted at the side wall of the second dimming section 1512. This allows the large-angle light emitted by the first light-emitting device 131 to be adjusted by the optical path dimming section before exiting through the third through hole 181 to the outside of the display panel 10, thereby increasing the brightness of the emitted light from the first light-emitting device 131 and improving the display brightness of the display panel 10.

[0093] In some examples, taking a pixel aperture 121 with a size of 10μm*10μm as an example, by setting the light path adjustment component 151 to adjust the light path of the large-angle light emitted by the first light-emitting device 131, the display brightness of the display panel 10 is increased by 144.6% compared to the display panel 10 without the light path adjustment layer 15. This increased display brightness extends the lifespan of the display panel 10 while maintaining the same display brightness.

[0094] The display panel 10 provided in this application embodiment has a light-emitting layer 13 disposed on one side of a substrate 11. The light-emitting layer 13 includes a plurality of first light-emitting devices 131. Thus, image display can be achieved by controlling the light emission of different first light-emitting devices 131. A first optical coupling layer 14 is disposed on the side of the light-emitting layer 13 away from the substrate 11, and a first through hole 141 is disposed in the first optical coupling layer 14. A light path adjustment layer 15 is disposed on the side of the first optical coupling layer 14 away from the substrate 11. The light path adjustment layer 15 includes a plurality of light path adjustment components 151, and at least some of the light path adjustment components 151 are correspondingly disposed on the light emission path of the first light-emitting devices 131. The light path adjustment component 151 includes a first dimming component. The first dimming part 1511 is located inside the first through hole 141, and the second dimming part 1512 is located on the side of the first dimming part 1511 away from the substrate 11. Along the thickness direction of the substrate 11, the sidewall of the first dimming part 1511 is inclined toward the center away from the first through hole 141, and the sidewall of the second dimming part 1512 is inclined toward the center close to the first through hole 141. A second optical coupling layer 16 is provided on the side of the first optical coupling layer 14 away from the substrate 11. The second optical coupling layer 16 covers the optical path adjustment component 151, and the refractive index of the optical path adjustment component 151 is set to be greater than the refractive index of either the first optical coupling layer 14 or the second optical coupling layer 16. Thus, when the light emitted by the first light-emitting device 131 illuminates the sidewall of the first dimming section 1511, total internal reflection can occur on the sidewall of the first dimming section 1511, thereby adjusting the light path of the light emitted by the first light-emitting device 131 to propagate along the thickness direction of the substrate 11, and reducing the divergence angle of the light emitted by the first light-emitting device 131.

[0095] In addition, when the light emitted by the first light-emitting device 131 illuminates the sidewall of the second dimming section 1512, the light enters the medium with a lower refractive index from the medium with a higher refractive index, causing the light to deflect and refract in the thickness direction of the substrate 11, which can reduce the divergence angle of the light emitted by the first light-emitting device 131.

[0096] In other words, the emission angle of the light emitted by the first light-emitting device 131 can be adjusted by the first dimming unit 1511 and the second dimming unit 1512, so that the light emitted by the first light-emitting device 131 is concentrated and emitted, which can reduce the light blocked by the first light-emitting device 131 and increase the brightness of the light emitted by the first light-emitting device 131 transmitted from the display panel 10, thereby improving the overall display brightness of the display panel 10 and improving the display effect of the display panel 10.

[0097] In some examples, the refractive indices of the first dimming unit 1511 and the second dimming unit 1512 may be the same, similar, or approximate.

[0098] In some examples, refer to Figure 4 As shown, the first dimming unit 1511 and the second dimming unit 1512 can be a single piece.

[0099] In some examples, in specific configurations, a first optical coupling layer 14 can be disposed on the side of the first light-blocking layer 17 facing away from the substrate 11, and a second through-hole 171 can be formed on the first optical coupling layer 14. Then, an optical path adjustment layer 15 is disposed on the side of the first optical coupling layer 14 facing away from the substrate 11. At this time, the first dimming part 1511 of the optical path adjustment layer 15 is located inside the second through-hole 171. Then, the optical path adjustment layer 15 is patterned to form a second dimming part 1512 on the side of the first dimming part 1511 facing away from the substrate 11.

[0100] In some examples of embodiments of this application, the refractive indices of the first dimming unit 1511 and the second dimming unit 1512 are set to be the same. This allows the first dimming unit 1511 and the second dimming unit 1512 to be integrated into a single unit, facilitating the placement of the light path adjustment component 151. Furthermore, it avoids light reflection or refraction loss at the interface between the first dimming unit 1511 and the second dimming unit 1512 due to the difference in refractive index, reducing the instantaneous light energy loss and effectively increasing the brightness of the light emitted by the first light-emitting device 131 at the point of transmission through the display panel 10, thus improving the overall display brightness of the display panel 10.

[0101] In some examples, the surface of the first dimming unit 1511 facing away from the substrate 11 may have a first orthographic projection on the substrate 11. The surface of the first dimming unit 1511 facing closer to the substrate 11 may have a second orthographic projection on the substrate 11.

[0102] In some examples, the area of ​​the first orthographic projection can be larger than the area of ​​the second orthographic projection. The first orthographic projection can cover the second orthographic projection. Thus, along... Figure 4 The direction indicated by the y-axis ensures that the sidewall of the first dimming part 1511 is inclined away from the center of the first through hole 141, so that the first dimming part 1511 can form an inverted conical structure. After the large-angle light emitted by the first light-emitting device 131 shines on the sidewall of the first dimming part 1511, the sidewall of the first dimming part 1511 can easily perform total internal reflection of the large-angle light emitted by the first light-emitting device 131.

[0103] In some examples, the surface of the second dimming unit 1512 facing away from the substrate 11 may have a third orthographic projection on the substrate 11. The surface of the second dimming unit 1512 near the substrate 11 may have a fourth orthographic projection on the substrate 11.

[0104] In some examples, the area of ​​the fourth orthographic projection can be larger than the area of ​​the third orthographic projection. The fourth orthographic projection can cover the third orthographic projection. Thus, along... Figure 4 The direction indicated by the y-axis ensures that the sidewall of the second dimming section 1512 is inclined towards the center of the first through hole 141, allowing the second dimming section 1512 to form a conical structure. After the large-angle light emitted by the first light-emitting device 131 shines on the sidewall of the second dimming section 1512, the sidewall of the second dimming section 1512 facilitates the refraction of the large-angle light emitted by the first light-emitting device 131.

[0105] In some examples, the area of ​​the second orthographic projection can be the area of ​​the fourth orthographic projection. The second orthographic projection covers the fourth orthographic projection.

[0106] In some examples of embodiments of this application, the area of ​​the second orthographic projection is set to be larger than the area of ​​the fourth orthographic projection, and the second orthographic projection covers the fourth orthographic projection. Thus, the first dimming unit 1511 and the second dimming unit 1512 can respectively adjust the large-angle light emission paths of the first light-emitting device 131 at different angles, enabling more large-angle light emission to be adjusted and transmitted from the third through-hole 181 to the outside of the display screen. This is beneficial for improving the display brightness of the display screen and extending the service life of the display panel 10.

[0107] In some examples, refer to Figure 4 As shown, along the thickness direction of the substrate 11, the size of the first dimming part 1511 can be the same as, similar to or approximate to the size of the first optical coupling layer 14.

[0108] In some examples, the size of the first dimming unit 1511 can be 2μm-3μm.

[0109] In some examples, the size of the first dimming unit 1511 can be 2.2μm-2.8μm.

[0110] In some examples, the size of the first optical coupling layer 14 can be 2μm-3μm.

[0111] In some examples, the size of the first optical coupling layer 14 can be 2.2 μm-2.8 μm.

[0112] In some examples of embodiments of this application, the dimensions of the first dimming section 1511 and the first optical coupling layer 14 are set to be the same along the basic thickness direction. Thus, during the manufacturing process of the display panel 10, when patterning the optical path adjustment layer 15, it is convenient to remove the optical path adjustment layer 15 from the surface of the first optical coupling layer 14, facilitating the optical path adjustment of the large-angle light emitted by the first light-emitting device 131, which is beneficial for improving the display brightness of the display panel 10.

[0113] In some examples, refer to Figure 4 As shown, along the thickness direction of the substrate 11, the size of the second dimming part 1512 can be smaller than the size of the second optical coupling layer 16.

[0114] In some examples, the size of the second dimming unit 1512 can be 2μm-3μm.

[0115] In some examples, the size of the second dimming unit 1512 may be the same as, similar to or similar to the size of the first dimming unit 1511.

[0116] In some examples of embodiments of this application, the size of the second dimming part 1512 is set to be smaller than the size of the second optical coupling layer 16 along the thickness direction of the substrate 11. This facilitates the second optical coupling layer 16 covering the second dimming part 1512, creating a refractive interface with a different refractive index between the second dimming part 1512 and the second optical coupling layer 16. This allows for the refraction of large-angle light incident from the second dimming part 1512 onto the second optical coupling layer 16, thereby adjusting the emission direction of the large-angle light and improving the display brightness of the display panel 10.

[0117] Furthermore, in some examples of embodiments of this application, the size of the second dimming unit 1512 is set to 2μm-3μm. This facilitates control over the thickness of the light path adjustment layer 15, and consequently, the thickness of the display panel 10.

[0118] Figure 5 This is another structural schematic diagram of a display panel provided in some embodiments of this application. Figure 6 This is another structural schematic diagram of a display panel provided in some embodiments of this application.

[0119] In some examples, refer to Figures 4-6 As shown, at least one of the first dimming unit 1511 and the second dimming unit 1512 may have a flat inclined wall as its sidewall.

[0120] In some examples, refer to Figure 5 As shown, the sidewall of the second dimming unit 1512 can be a flat, inclined wall. The sidewall of the first dimming unit 1511 can be an arc-shaped sidewall.

[0121] In some examples, refer to Figure 6 As shown, the sidewall of the first dimming unit 1511 can be a flat, inclined wall. The sidewall of the second dimming unit 1512 can be an arc-shaped sidewall.

[0122] In some examples, refer to Figure 4 As shown, the sidewalls of the first dimming unit 1511 and the second dimming unit 1512 can both be straight inclined walls.

[0123] In some examples of embodiments of this application, at least one of the first dimming unit 1511 and the second dimming unit 1512 is configured as a flat, inclined wall. In this way, the flat, inclined wall ensures that the light output direction of the adjusted light path at each position of the side wall of the first dimming unit 1511 is consistent. Similarly, the light output direction of the adjusted light path at each position of the side wall of the second dimming unit 1512 is consistent, thereby improving the consistency of the light output direction of the display panel 10 and increasing the display brightness of the display panel 10.

[0124] Figure 7 This is another structural schematic diagram of a display panel provided in some embodiments of this application.

[0125] In some examples, refer to Figures 5-7 As shown, at least a portion of the sidewall of at least one of the first dimming unit 1511 and the second dimming unit 1512 may be an arcuate sidewall. The arcuate sidewall may be an arcuate wall that bulges outward toward a direction away from the substrate 11.

[0126] In some examples, at least one of the first dimming unit 1511 and the second dimming unit 1512 has an arc-shaped sidewall.

[0127] In some examples, refer to Figure 5 As shown, the sidewall of the first dimming unit 1511 can be an arc-shaped sidewall.

[0128] In some examples, refer to Figure 6 As shown, the sidewall of the second dimming unit 1512 can be an arc-shaped sidewall.

[0129] In some examples, refer to Figure 7 As shown, the sidewalls of the first dimming unit 1511 and the second dimming unit 1512 can both be arc-shaped sidewalls.

[0130] In some examples of embodiments of this application, at least a portion of the sidewall of at least one of the first dimming section 1511 and the second dimming section 1512 is configured as an arc-shaped sidewall, wherein the arc-shaped sidewall is an arc-shaped wall that bulges outward toward the direction away from the substrate 11. Thus, after patterning the first through-hole 141 in the first optical coupling layer 14 and patterning the second dimming section 1512 in the optical path adjustment layer 15, there is no need to process the sidewalls of the first through-hole 141 and the second dimming section 1512, reducing the manufacturing process of the display panel 10 and lowering the difficulty of manufacturing the display panel 10.

[0131] In some examples, refer to Figure 4 As shown, the acute angle α formed between the sidewall of at least one of the first dimming section 1511 and the second dimming section 1512 and the plane where the substrate 11 is located can be 30°-70°.

[0132] In some examples, the acute angle formed between the sidewall of the first dimming unit 1511 and the plane of the substrate 11 can be 30°-70°.

[0133] In some examples, the acute angle formed between the sidewall of the first dimming unit 1511 and the plane where the substrate 11 is located can be 45°-55°.

[0134] In some examples, the acute angle formed between the sidewall of the second dimming unit 1512 and the plane of the substrate 11 can be 30°-70°.

[0135] In some examples, the acute angle formed between the sidewall of the second dimming unit 1512 and the plane of the substrate 11 can be 45°-55°.

[0136] In some examples of embodiments of this application, the acute angle between the sidewall of at least one of the first dimming part 1511 and the second dimming part 1512 and the plane where the substrate 11 is located is set to 30°-70°. Thus, when the large-angle light emitted by the first light-emitting device 131 illuminates the sidewall of the first dimming part 1511, it facilitates total internal reflection of the large-angle light towards the third through-hole 181; when the large-angle light emitted by the first light-emitting device 131 illuminates the sidewall of the second dimming part 1512, it facilitates refraction of the large-angle light towards the third through-hole 181, thereby increasing the amount of light emitted from the third through-hole 181, improving the display brightness of the display panel 10, and extending the service life of the display panel 10.

[0137] In some examples, the orthographic projection of the third through-hole 181 on the substrate 11 can cover the orthographic projection of the light path adjustment component 151 on the substrate 11. That is, the opening size of the third through-hole 181 can be larger than the maximum size of the light path adjustment component 151. In this way, the light adjusted by the light path adjustment component 151 can be transmitted from the third through-hole 181 to the outside of the display panel 10, increasing the amount of light transmitted through the third through-hole 181, improving the display brightness of the display panel 10, and helping to extend the service life of the display panel 10.

[0138] Figure 8 This is a top view structural diagram of a display panel provided in some embodiments of this application. Figure 9 This is a top view schematic diagram of another display panel structure provided in some embodiments of this application.

[0139] In some examples, refer to Figure 8 and Figure 9 As shown, the light-emitting layer 13 may include a second light-emitting device 132. The second light-emitting device 132 may be the same as, similar to or similar to the first light-emitting device 131. For details, please refer to the detailed description of the first light-emitting device 131 in the foregoing embodiments of this application. The embodiments of this application will not repeat the details.

[0140] In some examples, the second light-blocking layer 18 may have a fifth orthographic projection on the substrate 11. A first distance may exist between the fifth orthographic projection and the orthographic projection of the first light-emitting device 131 on the substrate 11. A second distance may exist between the fifth orthographic projection and the orthographic projection of the second light-emitting device 132 on the substrate 11.

[0141] In some examples, the first distance can be smaller than the second distance. That is, the blocking effect of the second light-blocking layer 18 on the large-angle light emitted by the second light-emitting device 132 is less than the blocking effect of the second light-blocking layer 18 on the large-angle light emitted by the first light-emitting device 131. Alternatively, in some examples, the second light-blocking layer 18 may not block the large-angle light emitted by the second light-emitting device 132. In this way, the light emitted by the second light-emitting device 132 can ensure that the display panel 10 has a large-angle display range, which can improve the viewing range of the display panel 10; in addition, the light emitted by the first light-emitting device 131 can be displayed within a small-angle range, which facilitates the control of the display angle range of the display panel 10, improves the application of the display panel 10 in different application scenarios, and expands the applicability of the display panel 10.

[0142] In some examples, refer to Figure 8 As shown, the light path adjustment component 151 may not be provided on the light output path of the second light-emitting device 132.

[0143] In some examples, refer to Figure 9As shown, some of the multiple light path adjustment components 151 can be correspondingly disposed on the light output path of the second light-emitting device 132. That is, in some examples of the embodiments of this application, a light path adjustment component 151 can be correspondingly disposed on the light output path of the second light-emitting device 132. In this way, the light output path of the second light-emitting device 132 can be adjusted by the light path adjustment component 151, thereby improving the uniformity of the display on the display panel 10.

[0144] In some examples, refer to Figure 8 and Figure 9 As shown, the light-emitting layer 13 may include a plurality of repeating light-emitting units 13a. Each light-emitting unit 13a may include a plurality of first light-emitting devices 131 and a plurality of second light-emitting devices 132.

[0145] In some examples, any one of the light-emitting units 13a may include a first light-emitting device 131 that emits light of different colors. For example, it may include a first light-emitting device 131 that emits red (R) light, green (G) light, and blue (B) light.

[0146] In some examples, any one light-emitting unit 13a may include multiple second light-emitting devices 132.

[0147] In some examples, any one of the light-emitting units 13a may include a second light-emitting device 132 that emits light of different colors. For example, it may include a second light-emitting device 132 that emits red (R) light, green (G) light, and blue (B) light.

[0148] In some examples, embodiments of this application provide a display device. The display device may include the display panel 10 provided in the foregoing embodiments of this application.

[0149] In some examples, the display device can be a laptop computer, mobile phone, wireless device, personal data assistant (PDA), handheld or portable computer, GPS receiver / navigator, camera, MP4 video player, camcorder, game console, watch, clock, calculator, TV monitor, flat panel display, computer monitor, automotive display (e.g., odometer display, etc.), navigator, cockpit controller and / or display, display of camera view (e.g., display of a rearview camera in a vehicle), electronic photograph, electronic billboard or sign, projector, packaging, etc.

[0150] It is understood that the display devices provided in some examples of the embodiments of this application may have the same or corresponding technical features as the display panel 10 provided in the foregoing embodiments of this application; therefore, the display devices provided in some examples of the embodiments of this application may have the same or similar technical effects as the display panel 10 provided in the foregoing embodiments of this application. For details, please refer to the detailed description of the foregoing embodiments of this application. The embodiments of this application will not repeat the details here.

[0151] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0152] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A display panel, characterized in that, include: substrate; A light-emitting layer, located on one side of the substrate, includes a plurality of first light-emitting devices; A first optical coupling layer is located on the side of the light-emitting layer opposite to the substrate, and the first optical coupling layer has a first through hole; An optical path adjustment layer is located on the side of the first optical coupling layer away from the substrate. The optical path adjustment layer includes a plurality of optical path adjustment components. At least a portion of the plurality of optical path adjustment components are correspondingly disposed on the light emission path of the first light-emitting device. The optical path adjustment components include a first dimming part and a second dimming part. The first dimming part is located inside the first through hole. The second dimming part is located on the side of the first dimming part away from the substrate. Along the thickness direction of the substrate, the sidewall of the first dimming part is inclined away from the center of the first through hole, and the sidewall of the second dimming part is inclined closer to the center of the first through hole. The second optical coupling layer is located on the side of the first optical coupling layer away from the substrate, and the second optical coupling layer covers the optical path adjustment component; The refractive index of the optical path adjustment component is greater than that of either the first optical coupling layer or the second optical coupling layer.

2. The display panel according to claim 1, characterized in that, The first dimming unit and the second dimming unit have the same refractive index.

3. The display panel according to claim 1, characterized in that, The side surface of the first dimming unit facing away from the substrate has a first orthographic projection on the substrate, and the side surface of the first dimming unit close to the substrate has a second orthographic projection on the substrate. The area of ​​the first orthographic projection is larger than the area of ​​the second orthographic projection, and the first orthographic projection covers the second orthographic projection. And / or, The second dimming unit has a third orthographic projection on the substrate on the side surface facing away from the substrate, and a fourth orthographic projection on the substrate on the side surface facing away from the substrate. The area of ​​the fourth orthographic projection is larger than the area of ​​the third orthographic projection, and the fourth orthographic projection covers the third orthographic projection. The area of ​​the second orthographic projection is larger than the area of ​​the fourth orthographic projection, and the second orthographic projection covers the fourth orthographic projection.

4. The display panel according to claim 1, characterized in that, Along the thickness direction of the substrate, the size of the first dimming part is the same as the size of the first optical coupling layer; The size of the first dimming unit is 2μm-3μm.

5. The display panel according to claim 1, characterized in that, Along the thickness direction of the substrate, the size of the second dimming section is smaller than the size of the second optical coupling layer; The size of the second dimming unit is 2μm-3μm.

6. The display panel according to claim 1, characterized in that, At least one of the first dimming unit and the second dimming unit has a flat, inclined sidewall.

7. The display panel according to claim 1, characterized in that, At least one of the first dimming unit and the second dimming unit has a sidewall that is at least partially arc-shaped, and the arc-shaped sidewall is an outwardly convex arc-shaped wall oriented away from the substrate.

8. The display panel according to claim 1, characterized in that, The acute angle between the sidewall of at least one of the first dimming unit and the second dimming unit and the plane of the substrate is 30°-70°.

9. The display panel according to any one of claims 1-8, characterized in that, The display panel further includes a first light-blocking layer, which is located between the light-emitting layer and the first light-coupled layer, and the first light-blocking layer has a second through hole; A portion of the first optical coupling layer is located in the second through hole, and the first through hole penetrates the first optical coupling layer located within the second through hole.

10. The display panel according to claim 9, characterized in that, The display panel further includes a second light-blocking layer, which is located on the side of the second optical coupling layer away from the substrate. The second light-blocking layer has a third through hole. Along the thickness direction of the substrate, the third through hole overlaps with the second through hole, and the opening area of ​​the third through hole is less than or equal to the opening area of ​​the second through hole.

11. The display panel according to claim 10, characterized in that, The orthographic projection of the third through hole on the substrate covers the orthographic projection of the optical path adjustment component on the substrate.

12. The display panel according to claim 10, characterized in that, The light-emitting layer further includes a second light-emitting device. The second light-blocking layer has a fifth orthographic projection on the substrate. There is a first distance between the fifth orthographic projection and the orthographic projection of the first light-emitting device on the substrate. There is a second distance between the fifth orthographic projection and the orthographic projection of the second light-emitting device on the substrate. The first distance is smaller than the second distance.

13. The display panel according to claim 12, characterized in that, At least some of the optical path adjustment components are respectively disposed on the light output path of the second light-emitting device.

14. The display panel according to claim 12, characterized in that, The light-emitting layer includes a plurality of repeating light-emitting units, and each light-emitting unit includes a plurality of first light-emitting devices and a plurality of second light-emitting devices.

15. A display device, characterized in that, Includes the display panel as described in any one of claims 1-14.

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