Light-emitting panel and display device

Abstract

The application discloses a light-emitting panel and a display device, comprising a first display area and a second display area surrounding the first display area, and further comprising a substrate and light-emitting elements, the first light-emitting elements being located in the first display area, and the second light-emitting elements being located in the second display area; the light-emitting elements comprise a first surface intersecting with the plane of the substrate; a first sub-first surface of the first light-emitting elements comprises oppositely arranged first and second sub-surfaces, and the included angle alpha1 between the first sub-surface and the substrate and the included angle alpha2 between the second sub-surface and the substrate satisfy alpha1=alpha2; a second sub-first surface of the second light-emitting elements comprises oppositely arranged third and fourth sub-surfaces, the third sub-surface is located on the side of the fourth sub-surface facing the first display area, and the included angle alpha3 between the third sub-surface and the substrate and the included angle alpha4 between the fourth sub-surface and the substrate satisfy alpha3>alpha4; the inclined first surface can improve the problem of the darker junction area of the light-emitting elements, and the fourth sub-surface with a small inclination can emit a large number of light rays, thereby improving the uniformity of the light-emitting panel.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more specifically, to a light-emitting panel and a display device. Background Technology

[0002] In the existing technology, when the light-emitting panel uses multiple light-emitting elements as light-emitting points for direct backlighting, it can achieve the function of local backlight adjustment compared to ordinary side-lit backlighting. Moreover, the light-emitting elements used usually have advantages such as high brightness, high contrast and wide color gamut. However, the light-emitting angle of each light-emitting element has a limit. Uneven brightness and darkness will occur in the boundary area between light-emitting elements and the edge of the light-emitting element arrangement area, which can easily lead to the light-emitting panel showing a starry sky effect and affect the display effect of the light-emitting panel. Summary of the Invention

[0003] In view of this, the present invention provides a light-emitting panel and a display device for weakening or avoiding the starry sky effect that occurs on the light-emitting panel.

[0004] In a first aspect, this application provides a light-emitting panel, including a first display area and a second display area that at least partially surrounds the first display area;

[0005] It includes a substrate and a plurality of light-emitting elements located on the side of the substrate facing the light-emitting surface of the light-emitting panel, wherein the light-emitting elements include a first light-emitting element located in the first display area and a second light-emitting element located in the second display area;

[0006] The light-emitting element includes a packaging cavity, the packaging cavity including a first surface, the first surface intersecting the plane of the substrate; the first surface is used to transmit at least a portion of the light.

[0007] The first surface of the first light-emitting element is a first sub-first surface, and the first surface of the second light-emitting element is a second sub-first surface;

[0008] Along the first direction, the first sub-first surface includes a first sub-surface and a second sub-surface disposed opposite to each other. The angle between the side of the first sub-surface facing the second sub-surface and the plane where the substrate is located is α1, and the angle between the side of the second sub-surface facing the first sub-surface and the plane where the substrate is located is α2, where α1=α2; wherein, the first direction is the arrangement direction of the first light-emitting element;

[0009] Along the direction from the second display area to the first display area, the second sub-first surface includes a third sub-surface and a fourth sub-surface disposed opposite to each other. The third sub-surface is located on the side of the fourth sub-surface facing the first display area. At least one of the third sub-surfaces facing the fourth sub-surface forms an angle α3 with the plane where the substrate is located, and at least one of the fourth sub-surfaces facing the third sub-surface forms an angle α4 with the plane where the substrate is located, where α3 > α4.

[0010] Secondly, this application provides a display device, the display device including the light-emitting panel.

[0011] Compared with the prior art, the light-emitting panel and display device provided by the present invention achieve at least the following beneficial effects:

[0012] This application provides a light-emitting panel and a display device. The light-emitting panel has a first display area and a second display area surrounding the first display area. The encapsulation cavity of the first light-emitting element located in the first display area includes a first sub-first surface intersecting the plane of the substrate, and the encapsulation cavity of the second light-emitting element located in the second display area includes a second sub-second surface intersecting the plane of the substrate. The second sub-second surface includes a third sub-surface and a fourth sub-surface that are oppositely arranged, with unequal angles to the plane of the substrate. The third sub-surface, with a larger angle to the plane of the substrate, is located on the side of the fourth sub-surface facing the first display area. This arrangement ensures that the fourth sub-surface of the second light-emitting element near the edge of the light-emitting panel... The larger area increases the light-emitting area of ​​the fourth sub-surface near the edge of the light-emitting panel, which helps to improve the brightness of the edge area of ​​the light-emitting panel and avoids the problem of dim light emission in the edge area of ​​the light-emitting panel. Furthermore, the light-emitting elements in this application all include a first surface that intersects with the plane of the substrate, which can increase the light-emitting area of ​​the inclined surface in the light-emitting element, thereby compensating for the brightness of the dark area in the light-emitting panel. That is, it avoids the problem of dim light emission in the boundary area between two adjacent light-emitting elements, and it can also avoid the problem of dim light emission in the boundary area enclosed by four adjacent light-emitting elements along the row and column direction. This solves the starry sky phenomenon that often occurs in the prior art, thereby improving the overall display effect of the light-emitting panel.

[0013] Of course, any product implementing this invention need not necessarily achieve all of the technical effects described above at the same time.

[0014] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0015] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0016] Figure 1 The image shown is a schematic diagram of a light-emitting panel provided in an embodiment of this application;

[0017] Figure 2 The image shown is provided in an embodiment of this application. Figure 1 A cross-sectional view of AA' in the light-emitting panel shown;

[0018] Figure 3 The diagram shown is another schematic diagram of the light-emitting panel provided in an embodiment of this application;

[0019] Figure 4 The image shown is provided in an embodiment of this application. Figure 3 A cross-sectional view of BB' in the light-emitting panel shown;

[0020] Figure 5 The image shown is provided in an embodiment of this application. Figure 3 A cross-sectional view of BB' in the light-emitting panel shown;

[0021] Figure 6 The image shown is provided in an embodiment of this application. Figure 2 An enlarged view of the first light-emitting element in a circuit;

[0022] Figure 7 The image shown is provided in an embodiment of this application. Figure 1 Another cross-sectional view of AA' in the light-emitting panel shown;

[0023] Figure 8 The image shown is provided in an embodiment of this application. Figure 1 Another cross-sectional view of AA' in the light-emitting panel shown;

[0024] Figure 9 The image shown is provided in an embodiment of this application. Figure 1 Another cross-sectional view of AA' in the light-emitting panel shown;

[0025] Figure 10 The diagram shown is another schematic diagram of the light-emitting panel provided in an embodiment of this application;

[0026] Figure 11 The image shown is provided in an embodiment of this application. Figure 2 Another enlarged view of the first light-emitting element;

[0027] Figure 12 The image shown is provided in an embodiment of this application. Figure 2 Another enlarged view of the first light-emitting element;

[0028] Figure 13 The image shown is provided in an embodiment of this application. Figure 2 Another enlarged view of the first light-emitting element;

[0029] Figure 14 The diagram shown is a cross-sectional schematic of one possible light-emitting element provided in an embodiment of this application;

[0030] Figure 15 The diagram shown is an alternative cross-sectional view of the light-emitting element provided in the embodiments of this application;

[0031] Figure 16 The diagram shown is a schematic representation of a display device provided in an embodiment of this application. Detailed Implementation

[0032] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0033] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0034] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0035] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0036] Various modifications and variations can be made to this invention without departing from its spirit or scope, as will be apparent to those skilled in the art. Therefore, this invention is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the embodiments provided in this invention can be combined with each other without contradiction.

[0037] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0038] In the existing technology, when the light-emitting panel uses multiple light-emitting elements as light-emitting points for direct backlighting, it can achieve the function of local backlight adjustment compared to ordinary side-lit backlighting. Moreover, the light-emitting elements used usually have advantages such as high brightness, high contrast and wide color gamut. However, the light-emitting angle of each light-emitting element has a limit. Uneven brightness and darkness will occur in the boundary area between light-emitting elements and the edge of the light-emitting element arrangement area, which can easily lead to the light-emitting panel showing a starry sky effect and affect the display effect of the light-emitting panel.

[0039] In view of this, the present invention provides a light-emitting panel and a display device for weakening or avoiding the starry sky effect that occurs on the light-emitting panel.

[0040] Figure 1 The image shown is a schematic diagram of a light-emitting panel provided in an embodiment of this application. Figure 2 The image shown is provided in an embodiment of this application. Figure 1 Please refer to a cross-sectional view of AA' in the light-emitting panel shown. Figure 1 and Figure 2 This application provides a light-emitting panel 100, including a first display area 11 and a second display area 12 that at least partially surrounds the first display area 11;

[0041] It includes a substrate 14 and a plurality of light-emitting elements 13 located on the side of the substrate 14 facing the light-emitting surface of the light-emitting panel 100. The light-emitting elements 13 include a first light-emitting element 131 located in the first display area 11 and a second light-emitting element 132 located in the second display area 12.

[0042] The light-emitting element 13 includes a package cavity 18, the package cavity 18 includes a first surface 17, the first surface 17 intersects the plane of the substrate 14; the first surface 17 is used to transmit at least part of the light.

[0043] The first surface 17 of the first light-emitting element 131 is a first sub-first surface 15, and the first surface 17 of the second light-emitting element 132 is a second sub-first surface 16;

[0044] Along the first direction X, the first sub-surface 15 includes a first sub-surface 151 and a second sub-surface 152 disposed opposite to each other. The angle between the side of the first sub-surface 151 facing the second sub-surface 152 and the plane where the substrate 14 is located is α1, and the angle between the side of the second sub-surface 152 facing the first sub-surface 151 and the plane where the substrate 14 is located is α2, where α1=α2; wherein, the first direction X is the arrangement direction of the first light-emitting element 131;

[0045] Along the direction from the second display area 12 to the first display area 11, the second sub-first surface 16 includes a third sub-surface 163 and a fourth sub-surface 164 disposed opposite to each other. The third sub-surface 163 is located on the side of the fourth sub-surface 164 facing the first display area 11. The angle between the side of at least one third sub-surface 163 facing the fourth sub-surface 164 and the plane where the substrate 14 is located is α3, and the angle between the side of at least one fourth sub-surface 164 facing the third sub-surface 163 and the plane where the substrate 14 is located is α4, where α3 > α4.

[0046] Specifically, this application provides a light-emitting panel 100, which includes a first display area 11 and a second display area 12. The second display area 12 can be optionally configured to at least partially surround the first display area 11, such as... Figure 1 As shown, for example, the second display area 12 can be configured to surround the entire first display area 11. Figure 1 , Figure 2 As shown, along the thickness direction of the light-emitting panel 100, the light-emitting panel 100 can optionally include a substrate 14 and light-emitting elements 13. The light-emitting elements 13 can be disposed on the side of the substrate 14 facing the light-emitting surface of the light-emitting panel 100. This application does not specifically limit the number of light-emitting elements 13 disposed in the light-emitting panel 100. Users can set the number of light-emitting elements 13 included in the light-emitting panel 100 according to actual needs. To clearly illustrate the configuration of the light-emitting panel 100 of this application, the light-emitting element 13 disposed in the first display area 11 is referred to as the first light-emitting element 131, and the light-emitting element 13 disposed in the second display area 12 is referred to as the second light-emitting element 132, as examples in the following description.

[0047] The light-emitting element 13 provided in this application includes an encapsulation cavity 18, which includes a first surface 17 for transmitting light. This first surface 17 can be configured to intersect the plane containing the substrate 14, meaning that the encapsulation cavity 18 of the light-emitting element 13 includes a first surface 17 that is not parallel to the plane containing the substrate 14. To clearly illustrate the configuration of the light-emitting element 13 in this application, the following description will use the first surface 17 corresponding to the first light-emitting element 131 as a first sub-first surface 15, and the first surface 17 corresponding to the second light-emitting element 132 as a second sub-first surface 16 as examples. This application does not specifically limit the number of first sub-first surfaces 15 included in the first light-emitting element 131. Users can select the number of first sub-first surfaces 15 required for each first light-emitting element 131 according to their own design requirements. Similarly, this application does not specifically limit the number of second sub-first surfaces 16 included in the second light-emitting element 132. Users can select the number of second sub-first surfaces 16 required for each second light-emitting element 132 according to their own design requirements.

[0048] One optional embodiment of the light-emitting panel 100 provided in this application is as follows: along the first direction X, the first sub-first surface 15 of the first light-emitting element 131 includes at least a set of first sub-surfaces 151 and second sub-surfaces 152 disposed opposite to each other. Furthermore, the angle between the side of the first sub-surface 151 facing the second sub-surface 152 and the plane containing the substrate 14 is set to α1, and the angle between the side of the second sub-surface 152 facing the first sub-surface 151 and the plane containing the substrate 14 is set to α2. α1 = α2 can be optionally set so that the tilt degrees of the oppositely disposed first sub-surfaces 151 and second sub-surfaces 152 of the first light-emitting element 131 relative to the substrate 14 are the same, so that when the first light-emitting element 131 is displayed, light is emitted through its first sub-surfaces. 151. The angle and quantity of light emitted from the second sub-surface 152 to its outer side can be the same, so that the adjacent first light-emitting elements 131 and the area enclosed by the adjacent first light-emitting elements 131 along the row and column can also have a certain amount of light, thereby improving the display brightness of the adjacent first light-emitting elements 131 and the area enclosed by the adjacent first light-emitting elements 131 along the row and column, and making the display brightness of the adjacent first light-emitting elements 131 and the area enclosed by the adjacent first light-emitting elements 131 along the row and column more uniform, so that the display brightness of each area in the first display area 11 of the light-emitting panel 100 is more uniform, and the phenomenon of starry sky display in the first display area 11 of the light-emitting panel 100 is avoided.

[0049] It should be noted that α1=α2 can be exactly the same, but it can also have a certain error, such as α1=α2±1°, α1=α2±3°, α1=α2±4°, etc. As long as the tilt of the first sub-surface 151 and the second sub-surface 152 in the first light-emitting element 131 is about the same, not perceptible to the user's eye, and used to make the display effect in the entire first display area 11 appear uniform to the user's eye.

[0050] Based on setting α1=α2 in the first display area 11, this application further proposes that, along the direction from the second display area 12 to the first display area 11, the second light-emitting element 132 includes at least one set of opposing third sub-surfaces 163 and fourth sub-surfaces 164, wherein the third sub-surface 163 is located on the side of the fourth sub-surface 164 facing the first display area 11, that is, the fourth sub-surface 164 is closer to the edge region of the second display area 12 of the light-emitting panel 100 away from the first display area 11; and further, the angle between the side of the third sub-surface 163 facing the fourth sub-surface 164 and the plane of the substrate 14 is set to α3, and the angle between the side of the fourth sub-surface 164 facing the third sub-surface 163 and the plane of the substrate 14 is set to α4. α3 can be optionally set to α4, so that the opposing third sub-surfaces 163 and fourth sub-surfaces 164 in the second light-emitting element 132 have different degrees of inclination relative to the substrate 14, and the fourth sub-surface 164 is set to α4. The angle between surface 164 and the plane containing the substrate 14 is smaller than that between the third sub-surface 163 and the third sub-surface 163. This allows the fourth sub-surface 164 to extend a greater length from the substrate 14 side toward the light-emitting surface of the light-emitting panel 100 when the thickness of the first surface 17 along the same range as the third sub-surface 163. In other words, under the same conditions, the setting of α3 > α4 makes the area of ​​the third sub-surface 163 smaller than that of the fourth sub-surface 164. When the second light-emitting element 132 is in the display state, this helps to ensure that the amount of light emitted outward through the fourth sub-surface 164 is greater than that emitted outward through the third sub-surface 163. This helps to compensate for the display brightness of the area near the edge of the light-emitting panel 100 in the second display area 12, avoiding the problem of dim light emission in the edge area of ​​the light-emitting panel 100 and improving the overall display effect of the light-emitting panel 100.

[0051] Furthermore, the second light-emitting element 132 is provided with a third sub-surface 163. The third sub-surface 163 may be provided with an angle α3 between the side facing the fourth sub-surface 164 and the plane where the substrate 14 is located. Combined with the arrangement of the first light-emitting element 131 having a first sub-surface 151 and a second sub-surface 152, it is possible to achieve that among the adjacent first light-emitting elements 131 and second light-emitting elements 132, the first light-emitting element 131 includes a light-emitting surface (such as the first sub-surface 151) facing the adjacent second light-emitting element 132, and the second light-emitting element 132 includes a light-emitting surface (third sub-surface 163) facing the adjacent first light-emitting element 131. This helps to avoid the problem of dark areas between the adjacent first light-emitting elements 131 and second light-emitting elements 132 and the area enclosed by four light-emitting elements 13 (such as two first light-emitting elements 131 and two second light-emitting elements 132) arranged adjacently along the row and column direction when the light-emitting panel 100 is in the display state, further improving the overall display effect of the light-emitting panel 100.

[0052] In summary, this application addresses the issue of uneven brightness on the light-emitting surface of the light-emitting element 13 by adjusting the angle of the light-emitting surface included in the encapsulation cavity 18 of the light-emitting panel 100, which intersects with the plane of the substrate 14. Furthermore, it addresses the issue of a relatively larger light-emitting area on the first surface 17 of the second light-emitting element 132 located near the edge of the light-emitting panel 100. This approach aims to weaken or eliminate dark areas between adjacent light-emitting elements 13 and within the area enclosed by four adjacent light-emitting elements 13 arranged along a row or column direction when the light-emitting panel 100 displays an image. It also weakens or eliminates dark areas near the edge of the light-emitting panel 100 when displaying an image. In other words, by adjusting the angle of the light-emitting surface included in the encapsulation cavity 18 of the light-emitting element 13, the application solves the problem of uneven brightness on the light-emitting surface of the light-emitting element 13 during display, thereby improving the display uniformity of the light-emitting panel 100.

[0053] Figure 3 The diagram shown is another schematic diagram of the light-emitting panel provided in an embodiment of this application. Figure 4 The image shown is provided in an embodiment of this application. Figure 3 Please refer to a cross-sectional view of BB' in the light-emitting panel shown. Figures 1-4 Optionally, the encapsulation cavity 18 further includes a second surface 19 parallel to the plane of the substrate 14, and the side of the first surface 17 away from the substrate 14 is in contact with the second surface 19; the second surface 19 is used to transmit at least part of the light.

[0054] The second surface 19 of the first light-emitting element 131 is a first sub-second surface 191, and the second surface 19 of the second light-emitting element 132 is a second sub-second surface 192;

[0055] The area of ​​at least one first sub-second surface 191 is S1, and the area of ​​at least one second sub-second surface 192 is S2, where S1 > S2.

[0056] Specifically, please combine Figure 1 , Figure 2 Reference Figure 3 , Figure 4 This application also provides an alternative implementation in which, in addition to the first surface 17 described above, the encapsulation cavity 18 of the light-emitting element 13 may further include a second surface 19. The second surface 19 is parallel to the plane of the substrate 14. The side of the first surface 17 away from the substrate 14 may be connected to the second surface 19. The second surface 19 and the first surface 17 may be used together for light transmission, that is, the second surface 19 may be selected as the top light-emitting surface of the light-emitting element 13. To clearly illustrate the configuration of the light-emitting element 13 in this application, the second surface 19 corresponding to the first light-emitting element 131 will be the first sub-second surface 191, and the second surface 19 corresponding to the second light-emitting element 132 will be the second sub-second surface 192, as an example. It may be selected that at least a portion of the area S1 of the first sub-second surface 191 is larger than the area S2 of the second sub-second surface 192, that is, it may be selected that at least a portion of the area of ​​the second surface 19 of the second light-emitting element 132 is smaller than the area of ​​the second surface 19 of the first light-emitting element 131. In this application, the second surface 19 of the second light-emitting element 132 located in the second display area 12 is smaller than the first light-emitting element 131 in the first display area 11. This allows for an increase in the area of ​​the first surface 17 of the second light-emitting element 132 within a limited area, particularly increasing the area of ​​the first surface 17 near the edge region of the second light-emitting element 132. This further enhances the brightness of the edge region of the light-emitting panel 100, avoids the problem of dim brightness in the edge region of the light-emitting panel 100, and improves the overall display effect of the light-emitting panel 100.

[0057] Figure 5 The image shown is provided in an embodiment of this application. Figure 3 Please refer to the cross-sectional view of BB' in the light-emitting panel shown below. Figures 1-5 Optionally, the light-emitting element 13 includes at least one light-emitting chip 20. In the first light-emitting element 131, the number of light-emitting chips 20 is D1; ​​in the second light-emitting element 132, the number of light-emitting chips 20 is D2; D1≤D2.

[0058] Specifically, the light-emitting element 13 further includes a light-emitting chip 20, which is used to realize the light-emitting function during the display stage of the light-emitting panel 100. This application does not make a specific limit on the number of light-emitting elements 13 included in each light-emitting element 13. Users can select the number of light-emitting chips 20 included in each light-emitting element 13 according to actual design requirements.

[0059] This application also provides an alternative implementation method, such as... Figure 4 As shown, the number D1 of light-emitting chips 20 included in the first light-emitting element 131 located in the first display area 11 is the same as the number D2 of light-emitting chips 20 included in the second light-emitting element 132 located in the second display area 12. At this time, the difference is only made by the different tilt angles of the first surfaces 17 of the first light-emitting element 131 and the second light-emitting element 132, and / or by the different areas of the second surfaces 19 of the first light-emitting element 131 and the second light-emitting element 132. This achieves the improvement of the luminous brightness between the boundary areas between the light-emitting elements 13 of the light-emitting panel 100 and the improvement of the luminous brightness of the edge areas of the light-emitting panel 100, thereby achieving the uniformity of the overall display effect of the light-emitting panel 100. Furthermore, the fact that the number of light-emitting chips 20 included in the light-emitting element 13 is the same can also reduce the variety of specifications required for the light-emitting element 13, thereby reducing the complexity of the manufacturing process and the related manufacturing costs of the light-emitting panel 100.

[0060] This application also provides an alternative implementation method, such as... Figure 5 As shown, the number D1 of light-emitting chips 20 included in the first light-emitting element 131 located in the first display area 11 is less than the number D2 of light-emitting chips 20 included in the second light-emitting element 132 located in the second display area 12. Since the second display area 12 is at least partially surrounding the first display area 11, the first light-emitting element 131 located in the first display area 11 has adjacent light-emitting elements 13 in multiple directions. These light-emitting elements 13 can be used together to achieve the display effect of the corresponding area. Therefore, under the same conditions, the display brightness of the area corresponding to the first light-emitting element 131 is relatively high, while the second light-emitting element 132 in the second display area 12 has less light-emitting chips 20. If a second light-emitting element 132 located in the edge region of the light-emitting panel 100 has no adjacent light-emitting element near the edge, the display brightness of the side of the second light-emitting element 132 facing the edge region of the light-emitting panel 100 is likely to be significantly low. Therefore, it is possible to choose to set more light-emitting chips 20 included in this type of second light-emitting element 132 to increase the light-emitting brightness of the second light-emitting element 132, thereby compensating for the display brightness of the edge region of the second light-emitting element 132 near the edge of the light-emitting panel 100, thereby weakening or eliminating the problem of dark areas at the edge of the light-emitting panel 100 and improving the overall display effect of the light-emitting panel 100.

[0061] Please refer to Figures 1-4Optionally, the encapsulation cavity 18 further includes a bottom plate 21 and a side plate 22. The bottom plate 21 is parallel to the plane of the substrate 14, and the side plate 22 is perpendicular to the bottom plate 21. The bottom plate 21 and the side plate 22 enclose the cavity to form an accommodating cavity, and the side of the first surface 17 away from the second surface 19 is in contact with the side plate 22 of the accommodating cavity.

[0062] The first surface 17, the second surface 19, and the accommodating cavity surround a accommodating space, and the light-emitting chip 20 is located within the accommodating space.

[0063] Specifically, in addition to the first surface 17 and the second surface 19 mentioned above, the encapsulation cavity 18 of the light-emitting element 13 may also include a base plate 21 and a side plate 22. The base plate 21 is parallel to the plane of the substrate 14, and the side plate 22 can be configured to be perpendicular to the base plate 21. The base plate 21 and the side plate 22 together form an accommodating cavity. The side of the first surface 17 of the encapsulation cavity 18 away from the second surface 19 is connected to the side of the side plate 22 away from the base plate 21. The other side of the first surface 17 is connected to the second surface 19 as described above, so that the first surface 17, the second surface 19, the base plate 21, and the side plate 22 can surround and form a closed accommodating cavity. The space refers to a three-dimensional shape that can be selected to form the encapsulation cavity 18. This application provides an optional implementation in which the light-emitting chip 20 of the light-emitting element 13 is disposed inside the accommodating space of the encapsulation cavity 18, so that the encapsulation cavity 18 can form a protection for the light-emitting chip 20 and reduce the risk of damage to the light-emitting chip 20 during installation and transportation. In addition, this application can optionally provide that at least part of the side plate 22 can also be used for light transmission. Then, the first surface 17, the second surface 19, and even at least part of the side plate 22 in the encapsulation cavity 18 can all allow the light emitted by the light-emitting chip 20 to pass through, so as to realize the display function of the light-emitting panel 100.

[0064] It should be added that this application does not specifically limit the placement of the light-emitting chip 20 in the packaging cavity 18. Users can place the light-emitting chip 20 in any position in the packaging cavity 18 according to their own needs. For example, the light-emitting chip 20 can be placed on at least one of the first surface 17, the second surface 19, the side plate 22, and the bottom plate 21.

[0065] Please continue to refer to Figures 1-4 Optionally, the light-emitting chip 20 emits light at least toward the interior of the receiving space;

[0066] The accommodating cavity includes a reflective structure 30;

[0067] The plane of the reflective structure 30 intersects the plane of the substrate 14, and the reflective structure 30 includes at least a reflective surface that emits light toward the first surface 17.

[0068] Specifically, this application also provides an alternative implementation in which, based on the premise that the light-emitting chip 20 is located inside the accommodating space of the packaging cavity 18, the light-emitting chip 20 can be further provided to include a light-emitting surface that emits light towards the interior of the accommodating space. In this case, in order to enable more of the light emitted by the light-emitting chip 20 to be emitted towards the light-emitting surface of the light-emitting panel 100, a reflective structure 30 can be provided inside the accommodating cavity of the packaging cavity 18. The plane of the reflective structure 30 can be set to intersect with the plane of the substrate 14, and the reflective structure 30 includes at least a reflective surface that emits light towards the first surface 17, so that the light emitted by the light-emitting chip 20 when it is working can be at least partially reflected by the reflective structure 30 to the first surface 17 for emission, so that the light-emitting element 13 includes light emitted from the first surface 17, thereby weakening or eliminating the dark area problem in the junction area between the light-emitting elements 13 and the edge area of ​​the light-emitting panel 100, making the display effect of the light-emitting panel 100 more uniform and improving the overall display effect of the light-emitting panel 100.

[0069] Figure 6 The image shown is provided in an embodiment of this application. Figure 2 Please refer to an enlarged view of the first light-emitting element. Figure 1 , Figure 2 and Figure 6 Furthermore, the reflective structure 30 may specifically include multiple alternately arranged first reflective sheets 31 and second reflective sheets 32. Adjacent first reflective sheets 31 and second reflective sheets 32 are connected together. The first reflective sheets 31 and second reflective sheets 32 are used to reflect as much light emitted by the light-emitting chip 20 as possible to the first surface 17 and second surface 19 of the packaging cavity 18, thereby achieving a more efficient display effect for the light-emitting element 13. The reflective structure 30 proposed here, including the first reflective sheet 31 and second reflective sheet 32, is only one optional arrangement provided in this application. This application is not limited to this. Users can configure the reflective structure 30 within the packaging cavity 18 of the light-emitting element 13 in detail according to their needs, as long as the reflective structure 30 can be used to reflect the light emitted by the light-emitting element 13 and improve light utilization. It should also be noted that the angle β1 between the side of the first reflective sheet 31 facing the substrate 14 and the side of the second reflective sheet 32 ​​facing the substrate 14, which are arranged adjacently, can be selected to be 80°-160°, for example, values ​​such as 80°, 105°, 130°, 160°, etc.; the angle β2 between the side of the first reflective sheet 31 or the second reflective sheet 32 ​​facing the side plate 22, which is connected to the side plate 22, and the side plate 22 can be selected to be 5°-60°, for example, values ​​such as 5°, 26°, 45°, 60°, etc.; by adjusting the tilt of the first reflective sheet 31 and the second reflective sheet 32, the reflection effect of the light emitted by the light-emitting chip 20 can be adjusted.

[0070] It should also be noted that the reflective structure 30 can be a reflective sheet with reflective function, or other reflective structural components can be selected; this application does not impose specific limitations on this. Of course, the higher the reflective effect of the selected reflective structure 30, the better. Among them, the material for making the reflective sheet can be selected to meet the requirements of high reflectivity and thinness, while ensuring its reflective effect and not occupying too much space, thus avoiding an increase in the overall volume of the light-emitting element 13.

[0071] Figure 7 The image shown is provided in an embodiment of this application. Figure 1 Another cross-sectional view of AA' in the light-emitting panel shown. Figure 8 The image shown is provided in an embodiment of this application. Figure 1 Please refer to another cross-sectional view of AA' in the light-emitting panel shown. Figures 1-8 Optionally, the light-emitting chip 20 is disposed on the first surface 17, and / or,

[0072] The light-emitting chip 20 is disposed on the second surface 19, and / or,

[0073] The light-emitting chip 20 is disposed on the side plate 22.

[0074] Specifically, the light-emitting element 13 provided in this application includes a packaging cavity 18 and a light-emitting chip 20. The light-emitting chip 20 is disposed inside the packaging cavity 18. The packaging cavity 18 includes at least a first surface 17, a second surface 19, a side plate 22, and a bottom plate 21. This application does not specifically limit the placement position of the light-emitting chip 20 inside the packaging cavity 18. The light-emitting chip 20 can be selectively placed on the first surface 17, and / or the second surface 19, and / or the side plate 22. Users can select and set the placement position of the light-emitting chip 20 inside the packaging cavity 18 according to their needs. For example, the position of the reflective surface of the reflective structure 30 set in the light-emitting element 13 and the specific position of the light-emitting surface of the light-emitting chip 20 can be combined to more finely and accurately improve the dark areas existing in the light-emitting panel 100.

[0075] This application provides an alternative embodiment, such as... Figure 7As shown, when the light-emitting chip 20 is disposed on the first surface 17, the area of ​​the light-emitting chip 20 in contact with the first surface 17 can be set to 1 / 10 to 1 / 3 of the total area of ​​the first surface 17, so as to avoid the light-emitting chip 20 occupying too much area of ​​the first surface 17, so that the light emitted by the light-emitting chip 20 can pass through a certain area of ​​the first surface 17 and be emitted to the light-emitting surface side of the light-emitting panel 100, so as to ensure that the first surface 17 of the light-emitting element 13 can emit a certain amount of light, thereby improving the dark areas at the edges and at the junctions in the light-emitting panel 100.

[0076] It should also be added that when the encapsulation cavity 18 of the light-emitting element 13 includes a first surface 17, a second surface 19, a side plate 22, and a bottom plate 21, it is also possible to choose that the bottom plate 21 and the side plate 22 are not capable of light transmission, and only the first surface 17 and the second surface 19 are transparent surfaces; for example Figure 8 As shown, when the side plate 22 is not emitting light, if the light-emitting chip 20 is placed on the side plate 22, the area occupied by the light-emitting chip 20 on the side plate 22 does not need to be considered, because the placement of the light-emitting chip 20 will not affect the light-transmitting area of ​​the light-emitting element 13. However, in order to ensure the space for the reflective structure 30 in the area enclosed by the side plate 22 and the bottom plate 21, it is also possible to choose to set the area occupied by the light-emitting chip 20 on the side plate 22 to be 1 / 10-9 / 10 of the total area of ​​the side plate 22, as long as it does not affect the placement of the reflective structure 30.

[0077] Figure 9 The image shown is provided in an embodiment of this application. Figure 1 Please refer to another cross-sectional view of AA' in the light-emitting panel shown. Figure 1 and Figure 9 Optionally, in the first display area 11, the light-emitting chip 20 is at least disposed on the second surface 19, and in the second display area 12, the light-emitting chip 20 is at least disposed on the first surface 17.

[0078] Specifically, for different areas of the light-emitting panel 100, this application also provides an alternative implementation in which, in the first display area 11, the light-emitting chip 20 is disposed on at least the second surface 19 of the light-emitting element 13 encapsulation cavity 18, and in the second display area 12, the light-emitting chip 20 is disposed on at least the first surface 17 of the light-emitting element 13 encapsulation cavity 18. Since the first surface 17 is an inclined surface relative to the light-emitting surface of the light-emitting panel 100, and the reflective structure 30 is also an inclined surface relative to the light-emitting surface of the light-emitting panel 100, when the light-emitting chip 20 in the second display area 12 is disposed on the first surface 17, the area of ​​the first surface 17 is larger than that of the second surface 19, allowing for the placement of a larger number of light-emitting chips 20, and the light emitted by the light-emitting chip 20... The light emitted by the first light-emitting element 132 can be reflected again by the reflective structure 30 onto the first surface 17 and then emitted, which greatly improves the brightness of the second light-emitting element 132 and increases the light-emitting area of ​​the second light-emitting element 132, so as to more efficiently improve the dark area problem at the edge of the light-emitting panel 100. The light-emitting chip 20 in the first light-emitting element 131 can be disposed on the second surface 19. The second surface 19 is parallel to the plane of the substrate 14, so the number of light-emitting elements 13 disposed on the second surface 19 will be less. In addition, the light emitted by the light-emitting element 13 disposed on the second surface 19 can also be partially reflected by the reflective structure 30 and emitted, improving the light utilization rate, so that the light emitted by the light-emitting chip 20 can improve the dark area problem at the junction of the light-emitting elements 13 in the light-emitting panel 100.

[0079] Furthermore, the first light-emitting element 131 located in the first display area 11 has adjacent light-emitting elements 13 in multiple directions to achieve the display effect of the corresponding area together. Therefore, under the same conditions, the display brightness of the area corresponding to the light-emitting element 13 is relatively high. However, in the second light-emitting element 132 in the second display area 12, there is no adjacent light-emitting element 13 on the edge side of the light-emitting panel 100. This application sets the light-emitting chip 20 in the first light-emitting element 131 to be located on the second surface 19 and the light-emitting chip 20 in the second light-emitting element 132 to be located on the first surface 17, so that more light-emitting chips 20 can be set in the second light-emitting element 132, thereby increasing the light-emitting brightness of the second light-emitting element 132, thereby balancing the brightness difference between the first display area 11 and the second display area 12, making the display effect of the light-emitting panel 100 more uniform and improving the overall display effect of the light-emitting panel 100.

[0080] In summary, this application can effectively improve the problems of starry sky and dark corners in the light-emitting panel 100 by setting a reflective structure 30 in the light-emitting element 13, adjusting the setting position of the light-emitting chip 20, and combining the setting of the surface of the encapsulation cavity 18 of the light-emitting element 13, thereby improving the display uniformity of the light-emitting panel 100.

[0081] It should also be noted that the light-emitting chip 20 provided in this application, except for the side that contacts the surface of the packaging cavity 18, also has the effect of emitting light on other surfaces, thereby maximizing the light-emitting area of ​​the light-emitting chip 20 and improving the display brightness of the light-emitting panel 100.

[0082] Please refer to Figure 1 and Figure 6 Optionally, along the direction perpendicular to the plane of substrate 14, the height of light-emitting element 13 is H1, and the height of accommodating cavity is H2. 1 / 3≤H2≤H1 2 / 3.

[0083] Specifically, this application also provides an optional configuration where, when the encapsulation cavity 18 of the light-emitting element 13 includes the aforementioned first surface 17, second surface 19, side plate 22, and bottom plate 21, the height of the light-emitting element 13 can be set to H1 and the height of the accommodating cavity can be set to H2 along the direction perpendicular to the plane of the substrate 14. 1 / 3≤H2≤H1 2 / 3. The encapsulation cavity 18, configured in this way, can effectively change the direction of light emitted by the light-emitting chip 20, reducing the concentration of light at the center of the light-emitting element 13. This allows the light to be dispersed to the sides (first surface 17) of the light-emitting element 13, enhancing the brightness of the unlit areas between adjacent light-emitting elements 13, thereby improving the starry sky effect of the light-emitting panel 100 and enhancing the display uniformity of the light-emitting panel 100. Furthermore, if the height occupied by the first surface 17 is too small along the direction perpendicular to the plane of the substrate 14, the area of ​​the light-emitting surface will be insufficient, resulting in poor improvement of dark areas. If the height occupied by the first surface 17 is too large, the light-emitting angle of the light-emitting elements 13 will be too large, causing severe mutual interference. Therefore, H1 can be selected as the optimal height. 1 / 3≤H2≤H1 2 / 3, in order to improve the dark area of ​​the light-emitting panel 100 without causing serious interference between the light-emitting elements 13.

[0084] Figure 10 The diagram shown is another schematic diagram of the light-emitting panel provided in the embodiment of this application. Please refer to... Figure 10 Optionally, the edge of the second display area 12 away from the first display area 11 includes an irregular edge.

[0085] Specifically, this application also provides an optional configuration in which the light-emitting panel 100 is an irregularly shaped light-emitting panel 100, that is, the edge of the second display area 12 away from the first display area 11 includes an irregular edge. For irregularly shaped light-emitting panels 100, dark areas are more likely to occur in the edge area of ​​the light-emitting panel 100. It is possible to increase the area of ​​the first surface 17 of the second light-emitting element 132 near the irregular edge by increasing the amount of light emitted into the second display area 12 near the irregular edge, thereby improving the dark area problem in the edge area of ​​the irregularly shaped light-emitting panel 100 and improving the overall display effect of the light-emitting panel 100.

[0086] Please refer to Figure 1 and Figure 2 , Figure 3 Optionally, in the direction perpendicular to the plane of the substrate 14, the projection of the second sub-first surface 16 includes a sub-edge, and at least a portion of the sub-edge disposed adjacent to the irregular edge extends in the same direction as the irregular edge.

[0087] Specifically, when the light-emitting panel 100 is an irregularly shaped light-emitting panel 100, this application also provides an optional setting method in which, in the direction perpendicular to the plane where the substrate 14 is located, the projection of the second sub-first surface 16 of the second light-emitting element 132 near the irregular edge can be selected to include the sub-edge. The extension direction of at least a portion of the sub-edge of the second light-emitting element 132 is set to be the same as the extension direction of the irregular edge, so that the distance between the sub-edge and the irregular edge can be made as equal as possible everywhere. Then, the light emitted from the second sub-first surface 16 can more uniformly improve the shadow problem in this edge area and more uniformly improve the overall display effect of the light-emitting panel 100.

[0088] Figure 11 The image shown is provided in an embodiment of this application. Figure 2 Please refer to another enlarged view of the first light-emitting element. Figure 1 , Figure 2 , Figure 11 Optionally, the first surface 17 and / or the second surface 19 include a light-diffusing structure 40.

[0089] Specifically, this application also provides an alternative implementation in which the first surface 17 and / or the second surface 19 of the light-emitting element 13 are provided with a light diffusion structure 40, so that the light emitted from inside the light-emitting element 13 to the first surface 17 and / or the second surface 19 can be further dispersed and emitted to the light-emitting surface side of the light-emitting panel 100. That is, the setting of the light diffusion structure 40 can make the light emitted to the light-emitting surface side of the light-emitting panel 100 more uniform and softer, so as to improve the user's viewing experience.

[0090] Please continue to refer to Figure 1, Figure 2 , Figure 11 Optionally, the light diffusion structure 40 includes diffusion particles 41;

[0091] In the first surface 17, the density of the diffusing particles 41 is ρ1; in the second surface 19, the density of the diffusing particles 41 is ρ2, where ρ1 ≥ ρ2.

[0092] Specifically, this application provides an optional embodiment in which the light diffusion structure 40 can be selected as diffusion particles 41. Multiple diffusion particles 41 can be selected to be provided on the first surface 17 and / or the second surface 19 of the light-emitting element 13 encapsulation structure, so that the light emitted from the light-emitting element 13 is diffused a second time on the light-emitting surface of the light-emitting element 13, making the light emitted by the light-emitting element 13 more uniform.

[0093] Furthermore, this application also provides an alternative implementation in which the density ρ1 of the diffusion particles 41 disposed on the first surface 17 of the light-emitting element 13 is set to be equal to the density ρ2 of the diffusion particles 41 disposed on the second surface 19. In this way, while ensuring that the light-emitting surface of the light-emitting element 13 is uniformly provided with diffusion particles 41, it is also beneficial to avoid the need for different partitions to be provided with diffusion particles 41, thus simplifying the manufacturing process of the light-emitting element 13. In addition, the density ρ1 of the diffusion particles 41 disposed on the first surface 17 of the light-emitting element 13 can be set to be greater than the density ρ2 of the diffusion particles 41 disposed on the second surface 19, so that the first surface 17 has a better light diffusion effect than the second surface 19, thereby further improving the light emission effect of the first surface 17, thereby better improving the dark area problem in the boundary area between the light-emitting elements 13 and the edge area of ​​the light-emitting panel 100, and improving the uniformity of the display surface of the light-emitting panel 100.

[0094] Figure 12 The image shown is provided in an embodiment of this application. Figure 2 Please refer to another enlarged view of the first light-emitting element. Figure 1 , Figure 2 , Figure 12 Optionally, the light diffusion structure 40 includes diffusion particles 41;

[0095] In the first surface 17, the diameter of the diffusing particle 41 is R1; in the second surface 19, the diameter of the diffusing particle 41 is R2, where R1 ≤ R2.

[0096] Specifically, this application also provides an alternative embodiment in which, when the light diffusion structure 40 is selected as diffusion particles 41, the diameter R1 of the diffusion particles 41 disposed on the first surface 17 of the light-emitting element 13 can be set to be equal to the diameter R2 of the diffusion particles 41 disposed on the second surface 19. In this way, while ensuring that the light-emitting surface of the light-emitting element 13 is uniformly provided with diffusion particles 41, it is also beneficial to avoid the need for different partitions to be set for the diffusion particles 41, thus simplifying the manufacturing process of the light-emitting element 13. In addition, the diameter R1 of the diffusion particles 41 disposed on the first surface 17 of the light-emitting element 13 can be set to be smaller than the diameter R2 of the diffusion particles 41 disposed on the second surface 19. The smaller the diameter of the diffusion particles 41, the better its light diffusion effect. Such a setting can further improve the light emission effect of the first surface 17, thereby better improving the dark area problem in the boundary area between the light-emitting elements 13 and the edge area of ​​the light-emitting panel 100, and improving the uniformity of the display surface of the light-emitting panel 100.

[0097] Figure 13 The image shown is provided in an embodiment of this application. Figure 2 Please refer to another enlarged view of the first light-emitting element. Figure 1 , Figure 2 , Figure 13 Optionally, in the first surface 17, the light diffusion structure 40 includes a serrated structure.

[0098] Specifically, this application also provides an alternative embodiment in which the light diffusion structure 40 can be optionally configured as a sawtooth structure, such as... Figure 13 As shown, the first surface 17 of the light-emitting element 13 encapsulation structure can be selectively configured to include a serrated light-diffusing structure 40, so that the first surface 17 has a better light-diffusing effect than the second surface 19, thereby further improving the light-emitting effect of the first surface 17, thereby better improving the dark area problem in the junction area between the light-emitting elements 13 and the edge area of ​​the light-emitting panel 100, and improving the uniformity of the display surface of the light-emitting panel 100.

[0099] Furthermore, this application is not limited to this. Users may also configure the first surface 17 and the second surface 19 of the light-emitting element 13 to include a sawtooth structure as needed. Users may also choose to configure the sawtooth structure in different regions to have different shapes and sizes. In addition, users may also choose to configure the first surface 17 and / or the second surface 19 of the light-emitting element 13 to have at least two different types of light diffusion structures 40, etc.

[0100] Figure 14 The diagram shown is a cross-sectional view of one possible light-emitting element provided in an embodiment of this application. Figure 15The diagram shown is an alternative cross-sectional view of the light-emitting element provided in this application embodiment. Please refer to... Figure 1 , Figure 2 and Figure 14 , Figure 15 Optionally, the first surface 17 is a plane or an arc surface.

[0101] Specifically, when the packaging structure of the light-emitting element 13 includes the first surface 17, this application also provides an alternative embodiment, such as... Figure 14 As shown, the first surface 17 is an arc surface. In this case, the light-emitting element 13 can be configured to include only the first surface 17, the side plate 22, and the bottom plate 21. The first surface 17 of the light-emitting element 13 can exist as the entire light-emitting surface of the light-emitting element 13. By making the light-emitting surface of the light-emitting element 13 into an arc shape, the light emitted by the light-emitting element 13 is reflected and mixed by the internal reflection structure 30, and then diffused twice through the light-emitting arc surface, so that the light emitted by the light-emitting element 13 is more uniform and the uniformity of the display surface of the light-emitting panel 100 is improved.

[0102] When the light-emitting element 13 includes a first surface 17 and a second surface 19, the first surface 17 can be set to be a plane or an arc surface. The user can select whether the first surface 17 of the light-emitting element 13 is a plane or an arc surface according to the specific shape of the second surface 19 or specific requirements. This application does not make specific limitations in this regard.

[0103] Please refer to Figure 1 and Figure 2 , Figure 2 The angles α1 and α2 between the two first surfaces of the first light-emitting element 131 and the plane where the substrate is located are shown, and the angles α3 and α4 between the two first surfaces of the second light-emitting element 132 and the plane where the substrate is located are shown. Optionally, the angle between the side of the first surface 17 facing the substrate 14 and the plane where the substrate 14 is located is θ, where 30°≤θ≤45°.

[0104] Specifically, this application also provides an alternative embodiment where, when the first surface 17 is a plane, the angle θ between the side of the first surface 17 facing the substrate 14 and the plane containing the substrate 14 can be set to a range of 30°-45°. For example, the value of θ can be 30°, 37°, 40°, 45°, etc. This configuration of the encapsulation cavity 18 can effectively change the direction of the light emitted by the light-emitting chip 20, reducing the concentration of light at the center of the light-emitting element 13, allowing the light to be dispersed to the side of the light-emitting element 13 (first surface 17), enhancing the brightness of the unlit areas between adjacent light-emitting elements 13, thereby improving the starry sky effect of the light-emitting panel 100 and enhancing the display uniformity of the light-emitting panel 100. It should be noted that any one of α1, α2, α3, and α4 mentioned above refers to the angle θ between the side of the first surface 17 facing the substrate 14 and the plane containing the substrate 14.

[0105] Figure 16 The diagram shown is a schematic representation of a display device provided in an embodiment of this application. Please refer to the provided text for further details. Figures 1-15 Reference Figure 16 Based on the same inventive concept, this application also provides a display device 200, which includes a light-emitting panel 100; the light-emitting panel 100 is any of the light-emitting panels 100 provided in this application.

[0106] It should be noted that the embodiments of the display device 200 provided in this application can refer to the embodiments of the light-emitting panel 100 described above, and the repeated parts will not be described again. The display device 200 provided in this application can be any product and component with display function, such as a mobile phone, tablet computer, television, monitor, laptop computer, vehicle display screen, or navigator.

[0107] As can be seen from the above embodiments, the light-emitting panel and display device provided by the present invention achieve at least the following beneficial effects:

[0108] This application provides a light-emitting panel and a display device. The light-emitting panel has a first display area and a second display area surrounding the first display area. The encapsulation cavity of the first light-emitting element located in the first display area includes a first sub-first surface intersecting the plane of the substrate, and the encapsulation cavity of the second light-emitting element located in the second display area includes a second sub-second surface intersecting the plane of the substrate. The second sub-second surface includes a third sub-surface and a fourth sub-surface that are oppositely arranged, with unequal angles to the plane of the substrate. The third sub-surface, with a larger angle to the plane of the substrate, is located on the side of the fourth sub-surface facing the first display area. This arrangement ensures that the fourth sub-surface of the second light-emitting element near the edge of the light-emitting panel... The larger area increases the light-emitting area of ​​the fourth sub-surface near the edge of the light-emitting panel, which helps to improve the brightness of the edge area of ​​the light-emitting panel and avoids the problem of dim light emission in the edge area of ​​the light-emitting panel. Furthermore, the light-emitting elements in this application all include a first surface that intersects with the plane of the substrate, which can increase the light-emitting area of ​​the inclined surface in the light-emitting element, thereby compensating for the brightness of the dark area in the light-emitting panel. That is, it avoids the problem of dim light emission in the boundary area between two adjacent light-emitting elements, and it can also avoid the problem of dim light emission in the boundary area enclosed by four adjacent light-emitting elements along the row and column direction. This solves the starry sky phenomenon that often occurs in the prior art, thereby improving the overall display effect of the light-emitting panel.

[0109] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A light emitting panel, characterized by The display panel comprises a first display area and a second display area at least partially surrounding the first display area. The display panel comprises a substrate and a plurality of light-emitting elements on a side of the substrate facing the light-emitting panel light-emitting surface, the light-emitting elements comprising first light-emitting elements in the first display area and second light-emitting elements in the second display area. The light-emitting elements comprise a package cavity, the package cavity comprising a first surface intersecting the plane of the substrate; the first surface is configured to transmit at least part of the light; The first surface of the first light-emitting element is a first sub-first surface, and the first surface of the second light-emitting element is a second sub-first surface; In a first direction, the first sub-first surface comprises oppositely arranged first and second sub-surfaces, the angle between the first sub-surface facing the second sub-surface and the plane of the substrate is α1, and the angle between the second sub-surface facing the first sub-surface and the plane of the substrate is α2, α1=α2; wherein the first direction is the arrangement direction of the first light-emitting element; In a direction of the second display area pointing to the first display area, the second sub-first surface comprises oppositely arranged third and fourth sub-surfaces, the third sub-surface is on the side of the fourth sub-surface facing the first display area, the angle between at least one of the third sub-surfaces facing the fourth sub-surface and the plane of the substrate is α3, and the angle between at least one of the fourth sub-surfaces facing the third sub-surface and the plane of the substrate is α4, α3>α4.

2. The light-emitting panel of claim 1, wherein The package cavity further comprises a second surface parallel to the plane of the substrate, the side of the first surface away from the substrate is connected to the second surface; the second surface is configured to transmit at least part of the light; The second surface of the first light-emitting element is a first sub-second surface, and the second surface of the second light-emitting element is a second sub-second surface; The area of at least one of the first sub-second surfaces is S1, and the area of at least one of the second sub-second surfaces is S2, S1>S2.

3. The light-emitting panel of claim 2, wherein At least one of the light-emitting elements comprises a light-emitting chip, the number of light-emitting chips in the first light-emitting element is D1, and the number of light-emitting chips in the second light-emitting element is D2; D1≤D2.

4. The light-emitting panel of claim 3, wherein The package cavity further comprises a bottom plate parallel to the plane of the substrate and a side plate perpendicular to the bottom plate, the bottom plate and the side plate form a receiving cavity, and the side of the first surface away from the second surface is connected to the side plate of the receiving cavity; The first surface, the second surface, and the receiving cavity surround a receiving space, and the light-emitting chip is located in the receiving space.

5. The light-emitting panel of claim 4, wherein The light-emitting chip emits light at least towards the inside of the receiving space; The receiving cavity comprises a reflective structure. The plane where the reflective structure is located intersects the plane where the substrate is located, and the reflective structure comprises at least a reflective surface which emits light towards the first surface.

6. The light emitting panel according to claim 5, wherein, the light emitting chip is disposed on the first surface, and / or, the light emitting chip is disposed on the second surface, and / or, the light emitting chip is disposed on the side plate.

7. The light emitting panel according to claim 6, wherein, in the first display area, the light emitting chip is disposed on at least the second surface, and in the second display area, the light emitting chip is disposed on at least the first surface.

8. The light emitting panel according to claim 5, wherein, In a direction perpendicular to a plane in which the substrate is present, a height of the light emitting element is H1, a height of the accommodating cavity is H2, H1 1 / 3≤H2≤H1 2 / 3.

9. The light emitting panel according to claim 1, wherein, the second display area comprises a special-shaped edge away from a side edge of the first display area.

10. The light emitting panel according to claim 9, wherein, in a direction perpendicular to the plane where the substrate is located, the projection of the second sub-first surface comprises a sub-edge, and at least part of the sub-edge is disposed adjacent to the special-shaped edge, and the extension direction of the at least part of the sub-edge is the same as the extension direction of the special-shaped edge.

11. The light emitting panel according to claim 2, wherein, the first surface and / or the second surface comprises a light diffusion structure.

12. The light emitting panel according to claim 11, wherein, the light diffusion structure comprises diffusion particles; in the first surface, the density of the diffusion particles is ρ1, and in the second surface, the density of the diffusion particles is ρ2, ρ1≥ρ2.

13. The light emitting panel according to claim 11, wherein, the light diffusion structure comprises diffusion particles; in the first surface, the diameter of the diffusion particles is R1, and in the second surface, the diameter of the diffusion particles is R2, R1≤R2.

14. The light emitting panel according to claim 11, wherein, in the first surface, the light diffusion structure comprises a sawtooth structure.

15. The light emitting panel according to claim 1, wherein, the first surface is a plane.

16. The light emitting panel according to claim 1, wherein, the angle between the side of the first surface facing the substrate and the plane where the substrate is located is θ, 30°≤θ≤45°.

17. A display device comprising: A light emitting panel according to any one of claims 1 to 16.

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