Display panel and display device
By using a first and second light-transmitting layer in the micro LED display panel, light is reflected and focused, solving the problem of reduced color gamut caused by light absorption by the black anti-reflective element and improving the display effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-02
- Publication Date
- 2026-03-27
AI Technical Summary
In miniature LED display panels, the black anti-reflective element absorbs light, resulting in a reduced color gamut and poor display quality.
The first light-transmitting layer is positioned correspondingly to the light-emitting device, and the light is reflected through the second light-transmitting layer, so that the light is focused, enhancing the light output effect of the light-emitting device and improving the display color gamut.
By focusing and reflecting light, the display panel's color gamut and display effect are improved, thus enhancing the display quality.
Smart Images
Figure CN121751865A_ABST
Abstract
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] Micro-LED (Micro-Light Emitting Diode) display panels have wide applications in outdoor fields such as wearable devices and automotive devices due to their advantages such as high brightness, high contrast, wide color gamut and wider viewing angle.
[0003] In related technologies, each micro-LED in a micro-LED display panel is provided with a black anti-reflection element between it and the adjacent micro-LED. The black anti-reflection element absorbs the light emitted by the micro-LED, resulting in a reduction in the display color gamut of the display panel and a poor display effect. Summary of the Invention
[0004] Therefore, it is necessary to propose a display panel and display device to address the problem of poor display performance of current display panels.
[0005] A display panel, comprising:
[0006] substrate;
[0007] A light-emitting device is located on one side of the substrate;
[0008] A first light-transmitting layer is disposed corresponding to the plurality of light-emitting devices, and the first light-transmitting layer is at least partially located on the side of the corresponding light-emitting device that is close to the adjacent light-emitting device;
[0009] A second light-transmitting layer is located between two adjacent light-emitting devices and, along the direction in which the light-emitting devices are arranged, at least partially covers the sidewall of the first light-transmitting layer.
[0010] The refractive index of the first light-transmitting layer is greater than that of the second light-transmitting layer.
[0011] This application also proposes a display device including the aforementioned display panel.
[0012] In this embodiment, the display panel and display device emit light from each light-emitting device. A portion of the light emitted illuminates adjacent light-emitting devices, while another portion illuminates the side of the light-emitting device facing away from the substrate. Since the first light-transmitting layer is correspondingly disposed with multiple light-emitting devices, and at least partially located on the side of the corresponding light-emitting device closest to its adjacent light-emitting device, the light emitted by one light-emitting device illuminating the adjacent light-emitting device will enter the portion of the first light-transmitting layer located on the side of the light-emitting device closest to its adjacent light-emitting device and pass through the first light-transmitting layer. Furthermore, since the second light-transmitting layer at least partially covers the sidewall of the first light-transmitting layer, and the refractive index of the first light-transmitting layer is greater than that of the second light-transmitting layer, the light emitted by one light-emitting device illuminating the adjacent light-emitting device, after passing through the portion of the first light-transmitting layer located on the side of the light-emitting device closest to its adjacent light-emitting device, will illuminate the contact surface between the first light-transmitting layer and the portion of the second light-transmitting layer between the first light-transmitting layer and the light-emitting device and its adjacent light-emitting device. At this contact surface, the light emitted by the first light-transmitting layer will be reflected back to the first light-transmitting layer and then converge with the light emitted by the light-emitting device illuminating the side facing away from the substrate. By reflecting the light emitted by the light-emitting device to the adjacent light-emitting device through the second light-transmitting layer, the light emitted by each light-emitting device to the adjacent light-emitting device converges with the light emitted by the light-emitting device to the side away from the substrate. This can enhance the light emission effect of the light-emitting device, improve the display color gamut of the display panel, and improve the display effect of the display panel.
[0013] In summary, the display panel and display device in this embodiment, through the above-described settings, can improve the display color gamut and display effect of the display panel. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments or exemplary embodiments of this application, the drawings used in the description of the embodiments or exemplary embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a top view of the display panel in one embodiment of this application.
[0016] Figure 2 for Figure 1 The cross-sectional view of the structure at point M1 in the display panel shown.
[0017] Figure 3 for Figure 1 The cross-sectional view of the structure at point M2 in the display panel shown.
[0018] Figure 4 for Figure 1The diagram shows a top view of a display panel whose first light-transmitting layer includes multiple first light-transmitting sections.
[0019] Figure 5 for Figure 4 The cross-sectional view of the structure at point M3 in the display panel shown.
[0020] Figure 6 for Figure 4 The cross-sectional view of the structure at point M4 in the display panel shown.
[0021] Figure 7 for Figure 4 The top view of the second light-transmitting section of the display panel shown includes multiple light-transmitting sub-sections.
[0022] Figure 8 for Figure 7 The cross-sectional view of the structure at point M5 in the display panel shown.
[0023] Figure 9 for Figure 7 The cross-sectional view of the structure at M6 in the display panel shown.
[0024] Figure 10 This is a top view of the display panel in one embodiment of this application.
[0025] Figure 11 for Figure 10 The cross-sectional view of the structure at M7 in the display panel shown.
[0026] Figure 12 for Figure 10 The cross-sectional view of the structure at M8 in the display panel shown.
[0027] Figure 13 This is a top view of a display device according to an embodiment of this application.
[0028] Figure label:
[0029] Display device 1;
[0030] Display panel 10;
[0031] substrate 100;
[0032] Light-emitting device 200, first surface 210, second surface 220, side surface 230;
[0033] First light-transmitting layer 300, first light-transmitting part 310;
[0034] Second light-transmitting layer 400, second light-transmitting part 410, light-transmitting sub-part 411;
[0035] First barrier layer 500, first through hole 510;
[0036] Second barrier layer 600, second through hole 610;
[0037] The third light-transmitting layer is 700. Detailed Implementation
[0038] 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.
[0039] 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.
[0040] 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.
[0041] 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.
[0042] 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.
[0043] 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.
[0044] Please see Figure 1 and Figure 2 , Figure 1 This diagram shows a top view of a display panel according to an embodiment of this application. An embodiment of this application provides a display panel 10, comprising: a substrate 100, light-emitting devices 200, a first light-transmitting layer 300, and a second light-transmitting layer 400. The light-emitting devices 200 are located on one side of the substrate 100. The first light-transmitting layer 300 is correspondingly disposed with respect to a plurality of light-emitting devices 200, and at least partially located on the side of the corresponding light-emitting device 200 closest to an adjacent light-emitting device 200. The second light-transmitting layer 400 is located between two adjacent light-emitting devices 200, and along the arrangement direction of the light-emitting devices 200, the second light-transmitting layer 400 at least partially covers the sidewall of the first light-transmitting layer 300. The refractive index of the first light-transmitting layer 300 is greater than the refractive index of the second light-transmitting layer 400.
[0045] In this embodiment, in the display panel 10, a portion of the light emitted by each light-emitting device 200 illuminates the adjacent light-emitting device 200, while another portion illuminates the side of the light-emitting device 200 facing away from the substrate 100. Since the first light-transmitting layer 300 is correspondingly disposed with the multiple light-emitting devices 200, and at least partially located on the side of the corresponding light-emitting device 200 closest to its adjacent light-emitting device 200, the light emitted by the light-emitting device 200 illuminating the adjacent light-emitting device 200 will penetrate the portion of the first light-transmitting layer 300 located on the side of the light-emitting device 200 closest to its adjacent light-emitting device 200, and pass through the first light-transmitting layer 300. Since the second light-transmitting layer 400 at least partially covers the sidewall of the first light-transmitting layer 300, and the refractive index of the first light-transmitting layer 300 is greater than that of the second light-transmitting layer 400, the light emitted by the light-emitting device 200 towards the adjacent light-emitting device 200, after passing through the portion of the first light-transmitting layer 300 located on the side of the light-emitting device 200 close to the adjacent light-emitting device 200, will illuminate the contact surface between the first light-transmitting layer 300 and the portion of the second light-transmitting layer 400 between the light-emitting device 200 and the adjacent light-emitting device 200, and will be reflected back to the first light-transmitting layer 300 at the contact surface, and then converge with the light emitted by the light-emitting device 200 towards the side away from the substrate 100. The second light-transmitting layer 400 reflects the light emitted by the light-emitting device 200 to the adjacent light-emitting device 200, so that the light emitted by each light-emitting device 200 to the adjacent light-emitting device 200 converges with the light emitted by the light-emitting device 200 to the side away from the substrate 100. This can enhance the light emission effect of the light-emitting device 200, improve the display color gamut of the display panel 10, and improve the display effect of the display panel 10.
[0046] In summary, the display panel 10 in this embodiment, through the above-described settings, can improve the display color gamut and enhance the display effect of the display panel 10.
[0047] Please see Figure 1 and Figure 2 In some embodiments, the first light-transmitting layer 300 encloses the corresponding light-emitting device 200; the second light-transmitting layer 400 surrounds the outer periphery of the plurality of first light-transmitting layers 300.
[0048] In this embodiment, the display panel 10, by enclosing the corresponding light-emitting device 200 through the first light-transmitting layer 300, allows all the light emitted by each light-emitting device 200 to pass through the first light-transmitting layer 300, and isolates each light-emitting device 200 from the external environment, preventing external moisture from contacting the light-emitting device 200 and preventing corrosion caused by external moisture. Furthermore, since the second light-transmitting layer 400 surrounds the periphery of the multiple first light-transmitting layers 300, the light emitted from the side of each light-emitting device 200 away from the adjacent light-emitting device 200, after passing through the first light-transmitting layer 300 surrounding the light-emitting device 200, will also be at least partially reflected back to the first light-transmitting layer 300 surrounding the light-emitting device 200 by the portion of the second light-transmitting layer 400 surrounding the first light-transmitting layer 300 corresponding to the light-emitting device 200.
[0049] By using a second light-transmitting layer 400 surrounding the periphery of multiple first light-transmitting layers 300, more light emitted from the sidewalls of each light-emitting device 200 can be reflected back to the first light-transmitting layer 300 surrounding the light-emitting device 200. In this way, the light emitted from the sidewalls of each light-emitting device 200 can be reflected by the second light-transmitting layer 400 and converge more with the light emitted from the side of the light-emitting device 200 away from the substrate 100, further improving the display color gamut of the display panel 10 and improving the display effect of the display panel 10.
[0050] It should be further noted that multiple first light-transmitting layers 300 are correspondingly arranged with multiple light-emitting devices 200, and the multiple first light-transmitting layers 300 and multiple light-emitting devices 200 are arranged in a one-to-one correspondence. Optionally, the first light-transmitting layer 300 includes a transparent substrate, in which nanoparticles are doped, and the material of the second light-transmitting layer 400 includes fluorinated organic materials.
[0051] Please see Figure 1 and Figure 2 In some embodiments, the second light-transmitting layer 400 includes a plurality of second light-transmitting portions 410, which are arranged at intervals; wherein, the plurality of second light-transmitting portions 410 are correspondingly disposed with a plurality of first light-transmitting layers 300, and the second light-transmitting portions 410 surround the outer periphery of the corresponding first light-transmitting layer 300.
[0052] In this embodiment, the light emitted from the sidewalls of each light-emitting device 200 in the display panel 10, after passing through the corresponding first light-transmitting layer 300 of the light-emitting device 200, is at least partially reflected back into the corresponding first light-transmitting layer 300 by the second light-transmitting portion 410 surrounding the outer periphery of the corresponding first light-transmitting layer 300.
[0053] Please see Figure 1 and Figure 2In some embodiments, the light-emitting device 200 includes a first surface 210, a second surface 220, and a side surface 230. The first surface 210 is located on the side of the light-emitting device 200 closest to the substrate 100, the second surface 220 is located on the side of the light-emitting device 200 furthest from the substrate 100, and the side surface 230 connects the first surface 210 and the second surface 220. The first light-transmitting layer 300 at least partially covers the second surface 220 and the side surface 230 corresponding to the light-emitting device 200.
[0054] In this embodiment, the light emitted from each side 230 of the light-emitting device 200 in the display panel 10 passes through the first light-transmitting layer 300 covering the side 230 as it illuminates an adjacent light-emitting device 200. After passing through the first light-transmitting layer 300, the light emitted from each side 230 of the light-emitting device 200 illuminates the portion of the second light-transmitting layer 400 between the light-emitting device 200 and the adjacent light-emitting device 200, and at the contact surface with the first light-transmitting layer 300 covering the side 230 of the light-emitting device 200, it is reflected back into the first light-transmitting layer 300 covering the side 230 of the light-emitting device 200 by the second light-transmitting layer 400. Thus, the light emitted from the second surface 220 and side 230 of each light-emitting device 200 can converge within the first light-transmitting layer 300 covering the second surface 220 and side 230 of the light-emitting device 200.
[0055] It should be noted that, optionally, the first light-transmitting layer 300 completely covers the second surface 220 and the side surface 230 of the corresponding light-emitting device 200.
[0056] Please see Figure 1 and Figure 2 In some embodiments, the first surface 210 and the side surface 230 are configured as light-emitting surfaces; the orthographic projection of the outline of the second surface 220 on the substrate 100 is located within the area enclosed by the orthographic projection of the outline of the first surface 210 on the substrate 100.
[0057] In this embodiment, the display panel 10 has a feature where the orthographic projection of the outer contour of the second surface 220 onto the substrate 100 lies within the area enclosed by the orthographic projection of the outer contour of the first surface 210 onto the substrate 100. Consequently, the side surface 230 of the light-emitting device 200 connecting the first surface 210 and the second surface 220 is tilted towards the center of the first surface 210. This causes the light emitted from the side surface 230 of the light-emitting device 200 to illuminate a direction away from the substrate 100, rather than towards the side of the substrate 100 closest to the light-emitting device 200. This enhances the light emission effect of the light-emitting device 200, improves the color gamut of the display panel 10, and enhances the display performance of the display panel 10.
[0058] Please see Figure 1 and Figure 2 In some embodiments, the distance H between the side surface 230 and the side of the substrate 100 near the light-emitting device 200 increases from the end of the side surface 230 connected to the first surface 210 to the end of the side surface 230 connected to the second surface 220.
[0059] In this embodiment, the display panel 10 has a progressively increasing distance H between the side surface 230 and the side of the substrate 100 closest to the light-emitting device 200, from the end where the side surface 230 connects to the first surface 210 to the end where the side surface 230 connects to the second surface 220. Therefore, the side surface 230 of the light-emitting device 200 can be configured as either a plane inclined towards the center of the light-emitting device 200 or a curved surface inclined towards the center of the light-emitting device 200. This ensures that the light emitted from the side surface 230 of the light-emitting device 200 illuminates more of the area away from the substrate 100, and does not illuminate the side of the substrate 100 closest to the light-emitting device 200. This enhances the light emission effect of the light-emitting device 200, improves the color gamut of the display panel 10, and enhances the display effect of the display panel 10.
[0060] Please see Figures 1 to 3 In some embodiments, the side surface 230 includes four sides, which surround the outer periphery of the center of the light-emitting device 200 and are connected end to end in sequence. Among the four side surfaces 230, two side surfaces 230 are arranged along the first direction V1 and two side surfaces 230 are arranged along the second direction V2; wherein the first direction V1, the second direction V2 and the thickness direction V3 of the substrate 100 intersect each other.
[0061] In this embodiment, the light emitted from each side 230 of the display panel 10 and the light-emitting device 200 passes through the first light-transmitting layer 300 covering the side 230 when it illuminates the light-emitting device 200 adjacent to the light-emitting device 200. Then it illuminates the contact surface between the second light-transmitting layer 400 and the first light-transmitting layer 300 covering the side 230, and is reflected back into the first light-transmitting layer 300 covering the side 230 by the second light-transmitting layer 400 at the contact surface.
[0062] Please see Figure 1 and Figure 2 In some embodiments, each of the two side surfaces 230 arranged along the first direction V1 is constructed as a plane. Furthermore, in the two side surfaces 230 arranged along the first direction V1, the angle between one side surface 230 and the first surface 210 is a first acute angle A, and the angle between the other side surface 230 and the first surface 210 is a second acute angle B; the first acute angle A is greater than or equal to the second acute angle B.
[0063] In this embodiment, the display panel 10 has two acute angles between the two side surfaces 230 arranged along the first direction V1 and the first surface 210. Therefore, the two side surfaces 230 of the light-emitting device 200 arranged along the first direction V1 are tilted towards the center of the first surface 210. By tilting the two side surfaces 230 along the first direction V1 towards the center of the first surface 210, it is ensured that the light emitted from the two side surfaces 230 of the light-emitting device 200 along the first direction V1 illuminates the side away from the substrate 100 and closer to the light-emitting device 200. Thus, the light emitted from the two side surfaces 230 of the light-emitting device 200 along the first direction V1 can, under the reflection of the second light-transmitting layer 400, illuminate the side of the second surface 220 of the light-emitting device 200 away from the substrate 100, and converge with the light emitted from the second surface 220, thereby enhancing the light emission effect of the light-emitting device 200.
[0064] Please see Figure 1 and Figure 2 In some embodiments, the first acute angle A = 90° - θ1, θ1 ≥ arcsin(n2 / n1), the second acute angle B = 90° - θ2, θ2 ≥ arcsin(n2 / n1), where the ratio of n2 to n1 is between 0.6 and 0.8, n1 is the refractive index of the first light-transmitting layer 300, and n2 is the refractive index of the second light-transmitting layer 400.
[0065] In this embodiment, θ1 is the angle of incidence of light S1 emitted from one of the two side surfaces 230 arranged along the first direction V1 on the display panel 10 at the contact surface between the second light-transmitting layer 400 and the first light-transmitting layer 300 covering the side surface 230. Arcsin(n2 / n1) refers to the angle of incidence required for the light rays illuminating the second light-transmitting layer 400 to be totally reflected by the second light-transmitting layer 400. With one of the two side surfaces 230 arranged along the first direction V1 on the light-emitting device 200 having an angle A = 90° - θ1 with the first surface 210, the incident angle θ1 of the light ray S1 emitted from this side surface 230 towards the second light-transmitting layer 400 is greater than or equal to the total internal reflection angle arcsin(n2 / n1) at the contact surface between the second light-transmitting layer 400 and the first light-transmitting layer 300. Thus, the light ray S1 emitted from this side surface 230 can be completely reflected back by the second light-transmitting layer 400 to the first light-transmitting layer 300 covering the side surface 230, and then converge with the light emitted from the first surface 210. This further enhances the light emission effect of the light-emitting device 200.
[0066] Similarly, by means of the two side surfaces 230 arranged along the first direction V1 on the light-emitting device 200, the angle B between the other side surface 230 and the first surface 210 is 90°-θ2. This allows the light emitted from that side surface 230 to be completely reflected back by the second light-transmitting layer 400 to the first light-transmitting layer 300 covering that side surface 230, thus converging with the light emitted from the first surface 210. This further enhances the light emission effect of the light-emitting device 200.
[0067] Please see Figure 1 and Figure 2 In some embodiments, both the first acute angle A and the second acute angle B are greater than or equal to 41 degrees. Optionally, the first acute angle A and the second acute angle B are equal.
[0068] Please see Figure 4 and Figure 5 In other embodiments, the first light-transmitting layer 300 includes a plurality of first light-transmitting portions 310. Among the plurality of first light-transmitting portions 310, two first light-transmitting portions 310 are correspondingly disposed with two side surfaces 230 arranged along the first direction V1 on the light-emitting device 200, and the two first light-transmitting portions 310 cover the corresponding side surfaces 230.
[0069] Please see Figure 5 In some examples, among the two side surfaces 230 arranged along the first direction V1 on the light-emitting device 200, the angle A between one side surface 230 and the first surface 210 is ≤90° - arcsin(n2 / n3), where n3 is the refractive index of the first light-transmitting portion 310 corresponding to the side surface 230, n2 is the refractive index of the second light-transmitting layer 400, and the ratio of n2 to n3 is between 0.6 and 0.8; the angle B between the other side surface 230 and the first surface 210 is ≤90° - arcsin(n2 / n4), where n4 is the refractive index of the first light-transmitting portion 310 corresponding to the side surface 230, n4 and n3 are not equal, and the ratio of n2 to n4 is between 0.6 and 0.8.
[0070] Please see Figure 7 and Figure 8 In some embodiments, the second light-transmitting portion 410 includes a plurality of light-transmitting sub-portions 411. Among the plurality of light-transmitting sub-portions 411, two light-transmitting sub-portions 411 are correspondingly disposed with respect to two side surfaces 230 arranged along the first direction V1 on the light-emitting device 200. Among the two side surfaces 230 arranged along the first direction V1, the first light-transmitting portion 310 and the light-transmitting sub-portions 411 corresponding to each side surface 230 are arranged sequentially in a direction away from the side surface 230. The refractive index of the first light-transmitting portion 310 is greater than the refractive index of the light-transmitting sub-portions 411.
[0071] Please see Figure 8In some embodiments, among the two side surfaces 230 arranged along the first direction V1, the included angle A between one side surface 230 and the first surface 210 is ≤90° - arcsin(n5 / n3), where n3 is the refractive index of the first light-transmitting portion 310 corresponding to the side surface 230, n5 is the refractive index of the light-transmitting sub-portion 411 corresponding to the side surface 230, and the ratio of n5 to n3 is between 0.6 and 0.8; the included angle B between the other side surface 230 and the first surface 210 is ≤90° - arcsin(n6 / n4), where n4 is the refractive index of the first light-transmitting portion 310 corresponding to the side surface 230, n6 is the refractive index of the light-transmitting sub-portion 411 corresponding to the side surface 230, and the ratio of n6 to n4 is between 0.6 and 0.8, and n5 / n3 and n6 / n4 are not equal. It should be further noted that, optionally, n6 and n5 are not equal, and n3 and n4 are not equal.
[0072] Please see Figure 1 and Figure 3 In some embodiments, the two side surfaces 230 arranged along the second direction V2 are constructed as planes. Furthermore, of the two side surfaces 230 arranged along the second direction V2, the angle between one side surface 230 and the first surface 210 is a third acute angle C, and the angle between the other side surface 230 and the first surface 210 is a fourth acute angle D; the third acute angle C is greater than or equal to the fourth acute angle D.
[0073] In this embodiment, the display panel 10 has two acute angles between the two side surfaces 230 arranged along the second direction V2 and the first surface 210. Therefore, the two side surfaces 230 of the light-emitting device 200 arranged along the second direction V2 are tilted towards the first surface 210, closer to the center of the first surface 210. By tilting the two side surfaces 230 along the second direction V2 towards the center of the first surface 210, it can be ensured that the light rays S3 emitted from one side surface 230 and the light rays S4 emitted from the other side surface 230 both illuminate the side of the light-emitting device 200 that is away from the substrate 100 and closer to the light-emitting device 200. In this way, the light emitted from the two side surfaces 230 of the light-emitting device 200 arranged along the second direction V2 can be reflected by the second light-transmitting layer 400 and illuminate the side of the second surface 220 of the light-emitting device 200 away from the substrate 100, and converge with the light emitted from the second surface 220 of the light-emitting device 200, thereby enhancing the light emission effect of the light-emitting device 200.
[0074] Please see Figures 1 to 3In some embodiments, the first acute angle A is equal to the third acute angle C. Optionally, the third acute angle C = 90° - θ3, θ3 ≥ arcsin(n2 / n1), and the fourth acute angle D = 90° - θ4, θ4 ≥ arcsin(n2 / n1), where the ratio of n2 to n1 is between 0.6 and 0.8, n1 is the refractive index of the first light-transmitting layer 300, and n2 is the refractive index of the second light-transmitting layer 400. With the above configuration, when light emitted from the two side surfaces 230 of the light-emitting device 200 arranged along the second direction V2 illuminates the second light-transmitting layer 400, it can be completely reflected back into the first light-transmitting layer 300 covering the side surface 230, and then converge with the light emitted from the first surface 210 of the light-emitting device 200. This further enhances the light emission effect of the light-emitting device 200. It should be noted that, of the two side surfaces 230 arranged along the second direction V2, the light emitted from one side surface 230 is S3, and the light emitted from the other side surface 230 is S4.
[0075] Please see Figure 4 and Figure 6 In other embodiments, among the plurality of first light-transmitting portions 310 of the first light-transmitting layer 300, two first light-transmitting portions 310 are correspondingly disposed with two side surfaces 230 arranged along the second direction V2 on the light-emitting device 200, and the two first light-transmitting portions 310 cover the corresponding side surfaces 230.
[0076] Please see Figure 6 In some embodiments, among the two side surfaces 230 arranged along the second direction V2 on the light-emitting device 200, the included angle C between one side surface 230 and the first surface 210 is ≤90° - arcsin(n2 / n7), where n7 is the refractive index of the first light-transmitting portion 310 corresponding to the side surface 230, n2 is the refractive index of the second light-transmitting layer 400, and the ratio of n2 to n7 is between 0.6 and 0.8; the included angle D between the other side surface 230 and the first surface 210 is ≤90° - arcsin(n2 / n8), where n8 is the refractive index of the first light-transmitting portion 310 corresponding to the side surface 230, n8 and n7 are not equal, and the ratio of n2 to n8 is between 0.6 and 0.8.
[0077] Please see Figure 7 and Figure 9 In other embodiments, among the plurality of light-transmitting sub-parts 411 of the second light-transmitting portion 410, two light-transmitting sub-parts 411 are correspondingly disposed with respect to two side surfaces 230 arranged along the second direction V2 on the light-emitting device 200. In the two side surfaces 230 arranged along the second direction V2, the first light-transmitting portion 310 and the light-transmitting sub-part 411 corresponding to each side surface 230 are arranged sequentially in a direction away from that side surface 230. The refractive index of the first light-transmitting portion 310 is greater than the refractive index of the light-transmitting sub-part 411.
[0078] Please see Figure 9 In some embodiments, among the two side surfaces 230 arranged along the second direction V2, the included angle C between one side surface 230 and the first surface 210 is ≤90° - arcsin(n9 / n7), where n7 is the refractive index of the first light-transmitting portion 310 corresponding to the side surface 230, n9 is the refractive index of the light-transmitting sub-portion 411 corresponding to the side surface 230, and the ratio of n9 to n7 is between 0.6 and 0.8; the included angle D between the other side surface 230 and the first surface 210 is ≤90° - arcsin(n10 / n8), where n8 is the refractive index of the first light-transmitting portion 310 corresponding to the side surface 230, n10 is the refractive index of the light-transmitting sub-portion 411 corresponding to the side surface 230, and the ratio of n10 to n8 is between 0.6 and 0.8, and n10 / n8 is not equal to n9 / n7. It should be further noted that, optionally, n10 and n9 are not equal, and n8 and n7 are not equal.
[0079] Please see Figures 7 to 9 In some embodiments, n10 / n8 is not equal to n6 / n4, and n10 / n8 is not equal to n5 / n3.
[0080] Please see Figures 1 to 3 In some embodiments, the first surface 210 is configured as a plane and is parallel to the stacking direction of the light-emitting device 200 and the substrate 100. Two side surfaces 230 arranged along the first direction V1 are symmetrically arranged about the axis S1 of the first surface 210; the axis S1 of the first surface 210 extends along the normal direction of the first surface 210 and passes through the center of the first surface 210.
[0081] In this embodiment, the display panel 10 has two side surfaces 230 arranged along the first direction V1, which are symmetrically arranged about the axis S1 of the first surface 210. Thus, the light emitted from the two side surfaces 230 arranged along the first direction V1 on the light-emitting device 200 can respectively illuminate the side of the second light-transmitting layer 400 closest to the side surface 230 with the same incident angle. Correspondingly, the second light-transmitting layer 400 can reflect the light emitted from the two side surfaces 230 to the same degree.
[0082] Please see Figures 1 to 3 In some embodiments, the two side surfaces 230 arranged along the second direction V2 are symmetrically arranged about the axis S1 of the first surface 210.
[0083] In this embodiment, the display panel 10 has two side surfaces 230 arranged along the second direction V2, which are symmetrically arranged about the axis S1 of the first surface 210. Thus, the light emitted from the two side surfaces 230 arranged along the second direction V2 on the light-emitting device 200 can respectively illuminate the side of the second light-transmitting layer 400 closest to the side surface 230 with the same incident angle. Correspondingly, the second light-transmitting layer 400 can reflect the light emitted from the two side surfaces 230 to the same degree.
[0084] Please see Figure 1 and Figure 2 In some embodiments, along the first direction V1, the distance between the second surface 220 of the light-emitting device 200, which is close to the side of the adjacent light-emitting device 200, and the portion of the second light-transmitting layer 400 located between the light-emitting device 200 and the adjacent light-emitting device 200 is a first distance D1. Along the first direction V1, the distance between the second surface 220 of the light-emitting device 200 and the second surface 220 of the adjacent light-emitting device 200 is a second distance D2; the ratio of the first distance D1 to the second distance D2 is between 1 / 4 and 1 / 6.
[0085] Please see Figures 1 to 3 In some embodiments, along the second direction V2, the distance between the second surface 220 of the light-emitting device 200, which is closer to the side of the adjacent light-emitting device 200, and the portion of the second light-transmitting layer 400 located between the light-emitting device 200 and the adjacent light-emitting device 200 is a third distance D3; the third distance D3 is equal to the first distance D1. Optionally, along the second direction V2, the distance between the second surface 220 of the light-emitting device 200 and the second surface 220 of the adjacent light-emitting device 200 is a fourth distance D4, and the fourth distance D4 is equal to the second distance D2.
[0086] Please see Figures 1 to 3 In some embodiments, the side of the first light-transmitting layer 300 facing away from the substrate 100 is flush with the side of the second light-transmitting layer 400 facing away from the substrate 100; the distance between the side of the first light-transmitting layer 300 facing away from the substrate 100 and the substrate 100 is a fourth distance D4. The distance between the second surface 220 and the substrate 100 is a fifth distance D5, D4-D5≥D1*tanθ; θ=arcsin(n2 / n1), arcsin(n2 / n1) is greater than or equal to 46°, n1 is the refractive index of the first light-transmitting layer 300, and n2 is the refractive index of the second light-transmitting layer 400.
[0087] In this embodiment, the display panel 10, by using D4-D5≥D1*tanθ, ensures that the light emitted from each area on the side 230 of the light-emitting device 200 can be reflected by the second light-transmitting layer 400 into the first light-transmitting layer 300 covering the first surface 210 and the side 230 of the light-emitting device 200, thereby converging with the light emitted from the first surface 210 of the light-emitting device 200. This further enhances the light emission effect of the light-emitting device 200.
[0088] Please see Figures 1 to 3 In some embodiments, the display panel 10 includes a first barrier layer 500 located on the side of the substrate 100 near the light-emitting device 200. The first barrier layer 500 has a plurality of first through holes 510 extending through it along its thickness direction. A plurality of second light-transmitting portions 410 are correspondingly disposed within the corresponding first through holes 510.
[0089] In this embodiment, when external light shines onto the substrate 100 from the side of the first barrier layer 500 away from the substrate 100, it is absorbed by the first barrier layer 500. By using the first barrier layer 500 to absorb the light shining onto the substrate 100, the reflectivity of the display panel 10 can be reduced, the amount of light reflected by the display panel 10 can be reduced, and the contrast and clarity of the displayed image can be improved. Optionally, the first barrier layer 500 includes an epoxy resin matrix, in which carbon powder is doped.
[0090] Please see Figures 10 to 12 In some embodiments, the display panel 10 includes a second barrier layer 600, which is located on the side of the second light-transmitting layer 400 facing away from the substrate 100. The second barrier layer 600 has a plurality of second through holes 610. The second through holes 610 penetrate the second barrier layer 600 along its thickness direction. The plurality of second through holes 610 are correspondingly disposed with a plurality of light-emitting devices 200. The orthographic projection of the light-emitting device 200 and the corresponding first light-transmitting layer 300 onto the substrate 100 is located within the area enclosed by the orthographic projection of the outer contour of the corresponding second through hole 610 onto the substrate 100.
[0091] In this embodiment, the light emitted by each light-emitting device 200 in the display panel 10 can pass through the first light-transmitting layer 300 corresponding to the light-emitting device 200 and through the second through-hole 610 corresponding to the light-emitting device 200 to illuminate the side of the second barrier layer 600 opposite to the substrate 100. Furthermore, the second barrier layer 600 can absorb external light illuminating the substrate 100 from the side of the second barrier layer 600 opposite to the substrate 100. By using the second barrier layer 600 to absorb the light illuminating the substrate 100, the reflectivity of the display panel 10 can be reduced, the reflected light from the display panel 10 can be reduced, and the contrast and clarity of the displayed image on the display panel 10 can be improved. Optionally, the second barrier layer 600 includes an epoxy resin matrix, in which carbon powder is doped.
[0092] Please see Figures 10 to 12 In some embodiments, the display panel 10 includes a plurality of third light-transmitting layers 700, which are correspondingly disposed with a plurality of second through holes 610; the third light-transmitting layer 700 is located in the corresponding second through hole 610 and fills the corresponding second through hole 610. The refractive index of the third light-transmitting layer 700 is greater than or equal to the refractive index of the first light-transmitting layer 300.
[0093] In this embodiment, the light emitted by each light-emitting device 200 in the display panel 10 can pass through the first light-transmitting layer 300 corresponding to the light-emitting device 200, and then through the third light-transmitting layer 700 in the second through hole 610 corresponding to the light-emitting device 200, and irradiate the side of the second blocking layer 600 away from the substrate 100.
[0094] Please see Figure 13 , Figure 13 A top view of a display device 1 according to an embodiment of this application is shown. This application also proposes a display device 1 including a display panel 10.
[0095] In the display device 1 of this embodiment, a portion of the light emitted by each light-emitting device 200 illuminates the adjacent light-emitting device 200, while another portion illuminates the side of the light-emitting device 200 facing away from the substrate 100. Since the first light-transmitting layer 300 is correspondingly disposed with the plurality of light-emitting devices 200, and the first light-transmitting layer 300 is at least partially located on the side of the corresponding light-emitting device 200 near the adjacent light-emitting device 200, the light emitted by the light-emitting device 200 illuminating the adjacent light-emitting device 200 will illuminate the portion of the first light-transmitting layer 300 located on the side of the light-emitting device 200 near the adjacent light-emitting device 200, and pass through the first light-transmitting layer 300. Since the second light-transmitting layer 400 at least partially covers the sidewall of the first light-transmitting layer 300, and the refractive index of the first light-transmitting layer 300 is greater than that of the second light-transmitting layer 400, the light emitted by the light-emitting device 200 towards the adjacent light-emitting device 200, after passing through the portion of the first light-transmitting layer 300 located on the side of the light-emitting device 200 close to the adjacent light-emitting device 200, will illuminate the contact surface between the first light-transmitting layer 300 and the portion of the second light-transmitting layer 400 between the light-emitting device 200 and the adjacent light-emitting device 200, and will be reflected back to the first light-transmitting layer 300 at the contact surface, and then converge with the light emitted by the light-emitting device 200 towards the side away from the substrate 100. The second light-transmitting layer 400 reflects the light emitted by the light-emitting device 200 to the adjacent light-emitting device 200, so that the light emitted by each light-emitting device 200 to the adjacent light-emitting device 200 converges with the light emitted by the light-emitting device 200 to the side away from the substrate 100. This can enhance the light emission effect of the light-emitting device 200, improve the display color gamut of the display panel 10, and improve the display effect of the display panel 10.
[0096] In summary, the display device 1 in this embodiment, through the above-mentioned settings, can improve the display color gamut of the display panel 10 and improve the display effect of the display panel 10.
[0097] 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.
[0098] 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, The display panel includes: substrate; A light-emitting device is located on one side of the substrate; A first light-transmitting layer is disposed corresponding to the plurality of light-emitting devices, and the first light-transmitting layer is at least partially located on the side of the corresponding light-emitting device that is close to the adjacent light-emitting device; A second light-transmitting layer is located between two adjacent light-emitting devices and, along the direction in which the light-emitting devices are arranged, at least partially covers the sidewall of the first light-transmitting layer. The refractive index of the first light-transmitting layer is greater than that of the second light-transmitting layer.
2. The display panel according to claim 1, characterized in that, The first light-transmitting layer encloses the corresponding light-emitting device; the second light-transmitting layer surrounds the outer periphery of the plurality of first light-transmitting layers.
3. The display panel according to claim 2, characterized in that, The second light-transmitting layer includes a plurality of second light-transmitting portions, which are arranged at intervals; wherein, the plurality of second light-transmitting portions are correspondingly disposed with respect to the plurality of first light-transmitting layers, and the second light-transmitting portions surround the outer periphery of the corresponding first light-transmitting layer.
4. The display panel according to any one of claims 1 to 3, characterized in that, The light-emitting device includes a first surface, a second surface, and a side surface. The first surface is located on the side of the light-emitting device closer to the substrate, the second surface is located on the side of the light-emitting device away from the substrate, and the side surface connects the first surface and the second surface. The first light-transmitting layer at least partially covers the second surface and the side surface corresponding to the light-emitting device.
5. The display panel according to claim 4, characterized in that, The first surface and the side surface are configured as light-emitting surfaces; the orthographic projection of the outline of the second surface on the substrate is located within the area enclosed by the orthographic projection of the outline of the first surface on the substrate.
6. The display panel according to claim 5, characterized in that, The distance between the side surface and the side of the substrate closest to the light-emitting device increases from the end where the side surface is connected to the first surface to the end where the side surface is connected to the second surface.
7. The display panel according to claim 6, characterized in that, The four sides are arranged around the outer periphery of the center of the light-emitting device and are connected end to end in sequence. Of the four sides, two sides are arranged along a first direction and two sides are arranged along a second direction; wherein the first direction, the second direction and the thickness direction of the substrate intersect each other.
8. The display panel according to claim 7, characterized in that, Of the two sides arranged along the first direction, each side is constructed as a plane; Furthermore, among the two sides arranged along the first direction, the angle between one side and the first surface is a first acute angle A, and the angle between the other side and the first surface is a second acute angle B; the first acute angle A is greater than or equal to the second acute angle B.
9. The display panel according to claim 8, characterized in that, The first acute angle A = 90° - θ1, θ1 ≥ arcsin(n2 / n1), the second acute angle B = 90° - θ2, θ2 ≥ arcsin(n2 / n1), where the ratio of n2 to n1 is between 0.6 and 0.8, n1 is the refractive index of the first light-transmitting layer, and n2 is the refractive index of the second light-transmitting layer.
10. The display panel according to claim 9, characterized in that, Both the first acute angle A and the second acute angle B are greater than or equal to 41 degrees.
11. The display panel according to claim 8, characterized in that, The two side surfaces arranged along the second direction are constructed as planes; Furthermore, among the two side surfaces arranged along the second direction, the angle between one side surface and the first surface is a third acute angle C, and the angle between the other side surface and the first surface is a fourth acute angle D; the third acute angle C is greater than or equal to the fourth acute angle D.
12. The display panel according to claim 11, characterized in that, The first acute angle A is equal to the third acute angle C.
13. The display panel according to claim 7, characterized in that, The first surface is configured as a plane, and the first surface is parallel to the stacking direction of the light-emitting device and the substrate; The two side surfaces arranged along the first direction are symmetrically arranged about the axis of the first surface; the axis of the first surface extends along the normal direction of the first surface and passes through the center of the first surface.
14. The display panel according to claim 13, characterized in that, The two side surfaces arranged along the second direction are symmetrical about the axis of the first surface.
15. The display panel according to claim 13, characterized in that, Along the first direction, the second surface of the light-emitting device is close to the side of the adjacent light-emitting device, and the distance between it and the second light-transmitting layer portion located between the light-emitting device and the adjacent light-emitting device is a first distance D1; Along the first direction, the distance between the second surface of the light-emitting device and the second surface of an adjacent light-emitting device is a second distance D2; the ratio of the first distance D1 to the second distance D2 is between 1 / 4 and 1 / 6.
16. The display panel according to claim 15, characterized in that, Along the second direction, the second surface of the light-emitting device is close to the side of the adjacent light-emitting device, and the distance between it and the second light-transmitting layer portion located between the light-emitting device and the adjacent light-emitting device is a third distance D3; the third distance D3 is equal to the first distance D1.
17. The display panel according to claim 4, characterized in that, The side of the first light-transmitting layer facing away from the substrate is flush with the side of the second light-transmitting layer facing away from the substrate; the distance between the side of the first light-transmitting layer facing away from the substrate and the substrate is a fourth distance D4; The distance between the second surface and the substrate is the fifth distance D5, D4-D5≥D1*tanθ; θ=arcsin(n2 / n1), arcsin(n2 / n1) is greater than or equal to 46°, n1 is the refractive index of the first light-transmitting layer, and n2 is the refractive index of the second light-transmitting layer.
18. The display panel according to claim 3, characterized in that, The display panel includes a first barrier layer located on the side of the substrate closer to the light-emitting device; the first barrier layer has a plurality of first through holes that penetrate the first barrier layer along its thickness direction. The plurality of second light-transmitting portions are correspondingly disposed with the plurality of first through holes, and the second light-transmitting portions are located within the corresponding first through holes.
19. The display panel according to claim 1, characterized in that, The display panel includes a second barrier layer located on the side of the second light-transmitting layer opposite to the substrate; the second barrier layer has a plurality of second through holes; the second through holes penetrate the second barrier layer along its thickness direction. The plurality of second through holes are correspondingly disposed with the plurality of light-emitting devices. The orthographic projection of the light-emitting device and the corresponding first light-transmitting layer on the substrate is located within the area enclosed by the orthographic projection of the outer contour of the second through hole corresponding to the light-emitting device on the substrate.
20. The display panel according to claim 19, characterized in that, The display panel includes a plurality of third light-transmitting layers, which are correspondingly disposed with the plurality of second through holes; the third light-transmitting layers are located in the corresponding second through holes and fill the corresponding second through holes; The refractive index of the third light-transmitting layer is greater than or equal to the refractive index of the first light-transmitting layer.
21. A display device, characterized in that, Includes the display panel described in any one of claims 1 to 20.