Display panel and display device

Abstract

Embodiments of the present application disclose a display panel and a display device, comprising a first display area and a second display area, the light transmittance of the first display area is greater than that of the second display area; the first light emitting element of the first display area comprises a first light emitting body, and the second light emitting element of the second display area comprises a second light emitting body; the first side light emitting surface of the first light emitting body comprises a first side light emitting point, and the second side light emitting surface of the second light emitting body comprises a second side light emitting point; along the thickness direction of the display panel, the relative position relationship between the first side light emitting point and the first side light emitting surface is the same as that between the second side light emitting point and the second side light emitting surface; the included angle between the tangent plane at the first side light emitting point and the substrate is smaller than that between the tangent plane at the second side light emitting point and the substrate. The technical scheme provided by the embodiments of the present application solves the problem of uneven brightness of the display panel in the viewing angle, and improves the display effect of the display panel.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of display panel, and particularly relate to a display panel and a display device. BACKGROUND

[0002] With the rapid development of display technology, people's requirements for the quality of display panels are also getting higher and higher. Many existing display devices adopt a camera under panel (CUP), and accordingly, the area is a transparent display area. Understandably, embedding the camera in the display panel can improve the screen ratio.

[0003] However, there is a difference in viewing angle brightness between the CUP area and other display areas, which affects the display effect of the display device. SUMMARY

[0004] The present application provides a display panel and a display device to solve the problem of uneven viewing angle brightness of the display panel and improve the display effect of the display panel.

[0005] In a first aspect, embodiments of the present application provide a display panel, comprising a first display area and a second display area, the light transmittance of the first display area is greater than that of the second display area, and the second display area surrounds at least part of the first display area.

[0006] The first display area comprises a first light emitting element, the first light emitting element comprises a first light emitting body, the second display area comprises a second light emitting element, and the second light emitting element comprises a second light emitting body.

[0007] The first light emitting body comprises a first side light emitting surface, the first side light emitting surface comprises a first side light emitting point, the second light emitting body comprises a second side light emitting surface, and the second side light emitting surface comprises a second side light emitting point; along the thickness direction of the display panel, the relative position relationship between the first side light emitting point and the first side light emitting surface is the same as the relative position relationship between the second side light emitting point and the second side light emitting surface.

[0008] The included angle between the tangent plane at the first side light emitting point and the substrate is smaller than the included angle between the tangent plane at the second side light emitting point and the substrate.

[0009] In a second aspect, embodiments of the present application also provide a display device comprising the display panel of the first aspect.

[0010] The technical scheme of the embodiment of the present application can make the large-view-angle luminance of the first display area lower than the large-view-angle luminance of the second display area, so that the luminance difference between the first display area and the second display area can be reduced, and the uniformity of the luminance of the display panel can be ensured.

[0011] It should be understood that the content described in this part is not intended to identify key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0013] Figure 1 A structural schematic diagram of a display panel provided by the embodiment of the present application is shown in the figure.

[0014] Figure 2 A structural schematic diagram of a display panel provided by the embodiment of the present application is shown in the figure. Figure 1 A sectional structure schematic diagram along the A-A' direction is shown in the figure.

[0015] Figure 3 A sectional structure schematic diagram along the A-A' direction is shown in the figure. Figure 2 A sectional structure schematic diagram along the A-A' direction is shown in the figure.

[0016] Figure 4 A sectional structure schematic diagram of another display panel provided by the embodiment of the present application is shown in the figure.

[0017] Figure 5 A sectional structure schematic diagram of another display panel provided by the embodiment of the present application is shown in the figure.

[0018] Figure 6 A sectional structure schematic diagram of another display panel provided by the embodiment of the present application is shown in the figure.

[0019] Figure 7 A sectional structure schematic diagram of another display panel provided by the embodiment of the present application is shown in the figure. Figure 6 A sectional structure schematic diagram of another display panel provided by the embodiment of the present application is shown in the figure.

[0020] Figure 8 FIG. 6 is a schematic view of a cross-sectional structure of a display panel according to an embodiment of the present application;

[0021] Figure 9 FIG. 6 is a schematic view of a cross-sectional structure of a display panel according to an embodiment of the present application;

[0022] Figure 10 FIG. 6 is a schematic view of a cross-sectional structure of a display panel according to an embodiment of the present application;

[0023] Figure 11 FIG. 6 is a schematic view of a cross-sectional structure of a display panel according to an embodiment of the present application;

[0024] Figure 12 FIG. 6 is a schematic view of a cross-sectional structure of a display panel according to an embodiment of the present application; Figure 11 FIG. 6 is a schematic view of a cross-sectional structure of a display panel according to an embodiment of the present application;

[0025] Figure 13 FIG. 6 is a schematic view of a cross-sectional structure of a display panel according to an embodiment of the present application; DETAILED DESCRIPTION

[0026] In order to make the personnel in the art better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by the personnel in the art without creative labor should belong to the scope of protection of the present application.

[0027] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device including a series of steps or units does not have to be limited to only those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to the process, method, product, or device.

[0028] Figure 1 FIG. 6 is a schematic view of a cross-sectional structure of a display panel according to an embodiment of the present application; Figure 2 FIG. 6 is a schematic view of a cross-sectional structure of a display panel according to an embodiment of the present application; Figure 1 FIG. 6 is a schematic view of a cross-sectional structure of a display panel according to an embodiment of the present application; Figure 1 and Figure 2As shown, the display panel includes a first display area 100 and a second display area 200. The light transmittance of the first display area 100 is greater than that of the second display area 200, and the second display area 200 surrounds at least a portion of the first display area 100. The first display area 100 includes a first light-emitting element 10, which includes a first light-emitting body 11. The second display area 200 includes a second light-emitting element 20, which includes a second light-emitting body 21. The first light-emitting body 11 includes a first side light-emitting surface 111. The light-emitting surface 111 includes a first side light-emitting point C, the second light-emitting body 21 includes a second side light-emitting surface 211, and the second side light-emitting surface 211 includes a second side light-emitting point D; along the thickness direction Z of the display panel, the relative positional relationship between the first side light-emitting point C and the first side light-emitting surface 111 is the same as the relative positional relationship between the second side light-emitting point D and the second side light-emitting surface 211; the angle θ1 between the tangent plane at the first side light-emitting point C and the substrate 140 is smaller than the angle θ2 between the tangent plane at the second side light-emitting point D and the substrate 140.

[0029] Among them, such as Figure 1 As shown, the specific positional relationship between the first display area 100 and the second display area 200 is not specifically limited in this embodiment of the invention. Figure 1 The illustration only shows a second display area 200 surrounding a first display area 100. The first display area 100 includes, but is not limited to, an under-display camera area or a fingerprint recognition area, and the second display area 200 includes, but is not limited to, the effective display area of ​​the display panel. Because the light transmittance of the first display area 100 is greater than that of the second display area 200, some photosensitive elements within the first display area 100, such as a camera or fingerprint sensor, can have better light sensitivity. However, this also results in a brightness difference between the first display area 100 and the second display area 200 at wide viewing angles, affecting the display effect of the display device.

[0030] like Figure 2 As shown, the first light-emitting element 10 and the second light-emitting element 20 can be fabricated in the same process during the manufacturing of the display panel to simplify the manufacturing process. However, in the thickness direction Z of the display panel, the distances of the first light-emitting element 10 and the second light-emitting element 20 from the substrate 140 can be different or the same. This embodiment of the invention does not limit this and can be set according to the actual situation. Figure 2 The schematic diagram illustrating the positional relationship between the first light-emitting element 10 and the second light-emitting element 20 is merely illustrative and is not limited thereto.

[0031] The first light-emitting element 10 and the second light-emitting element 20 include, but are not limited to, one or more of the following: red light-emitting element, green light-emitting element, blue light-emitting element, white light-emitting element, yellow light-emitting element, cyan light-emitting element, and magenta light-emitting element.

[0032] With reference to the foregoing Figure 2 As shown, the first light emitting element 10 and the second light emitting element 20 further comprise an anode layer 40 and a cathode layer 50 respectively located on both sides of the first light emitting body 11 and the second light emitting body 21, wherein the first light emitting body 11 and the second light emitting body 21 comprise a light emitting layer. It should be noted that the first light emitting body 11 and the second light emitting body 21 include but are not limited to being arranged in the pixel definition layer, and can also be other organic film layers, and the embodiments of the present application do not limit this.

[0033] In addition, in addition to the functional film layers shown above, the first light emitting element 10 and the second light emitting element 20 can further comprise an auxiliary light emitting layer for promoting the recombination of carriers in the light emitting layer, for example, the auxiliary light emitting layer can comprise one or more of a hole injection layer, a hole transport layer, a resistance barrier layer, a hole barrier layer, a hole transport layer, a hole injection layer, which is not limited here.

[0034] Further, the first light emitting element 10 is electrically connected with the pixel driving circuit 60, and the second light emitting element 20 is electrically connected with the pixel driving circuit 70. It can be understood that the pixel driving circuit 60 and the pixel driving circuit 70 comprise a thin film transistor T and other structures (only one thin film transistor T is exemplarily shown in the figure). In addition, the first light emitting element 10 and the second light emitting element 20 further comprise other film layers between the substrate 140, including but not limited to a buffer layer, an inorganic insulating layer and an organic insulating layer, etc.

[0035] With reference to the foregoing Figure 2 As shown, the first light emitting body 11 comprises a first side light emitting surface 111, and the second light emitting body 21 comprises a second side light emitting surface 211. The first side light emitting surface 111 and the second side light emitting surface 211 can be a plane, a curved surface or any other arbitrary shape, and the embodiments of the present application do not limit this, Figure 2 Only the first side light emitting surface 111 and the second side light emitting surface 211 are exemplarily given as smooth curved surface structures. In addition, along a first direction X parallel to the plane in which the substrate 140 is located, the two first side light emitting surfaces 111 of the first light emitting body 11 include but are not limited to a symmetrical structure, and by analogy, the two second side light emitting surfaces 211 of the second light emitting body 21 also include but are not limited to a symmetrical structure.

[0036] Further, along the thickness direction Z of the display panel, the relative positional relationship between the first side light emitting point C and the first side light emitting surface 111 is the same as the relative positional relationship between the second side light emitting point D and the second side light emitting surface 211. In other words, the specific position of the first side light emitting point C on the first side light emitting surface 111 is the same as the position of the second side light emitting point D on the second side light emitting surface 211. Specifically, it can be an end point, a center point or any other point of the light emitting surface, and the embodiments of the present application do not limit this.

[0037] For example, referring to Figure 2 As shown, along the thickness direction Z of the display panel, the first side light exit point C is located at 1 / 2 height of the first side light exit surface 111, and similarly, the second side light exit point D is also located at 1 / 2 height of the second side light exit surface 211. It should be noted that, along the thickness direction Z of the display panel, the height of the first side light exit surface 111 and the height of the second side light exit surface 211 can be the same or different, and the embodiments of the present application do not limit this, Figure 2 For example, only.

[0038] At this time, since the angle θ1 between the tangent plane where the first side light exit point C is located and the substrate 140 is smaller than the angle θ2 between the tangent plane where the second side light exit point D is located and the substrate 140, when the light rays in the same direction are incident on the first side light exit point C and the second side light exit point D, the propagation directions of the light rays will also be different.

[0039] For example, Figure 3 For Figure 2 The local cross-sectional structure diagram of the first light emitter and the second light emitter is shown in FIG. 2B. Figure 3 As shown, when the light ray G is incident on the first side light exit point C, since the angle θ1 between the tangent plane where the first side light exit point C is located and the substrate 140 is very small, the light ray G can be directly reflected at the first side light exit point C and exit from the light exit surface side of the display panel, and the finally emitted light ray is G1. When the light ray G in the same direction is incident on the second side light exit point D, since the angle θ2 between the tangent plane where the second side light exit point D is located and the substrate 140 is larger, generally total reflection does not occur and the film layer where the second light emitter 20 is generally located is a transparent organic film layer, so that the light ray G will be refracted in the transparent organic film layer, and then exit from the surface of the transparent organic film layer away from the substrate 140, and the finally emitted light ray is G2. From Figure 3 It can be seen that the light ray G1 has a smaller light exit viewing angle than the light ray G2, so that the first display area 100 has a smaller viewing angle luminance. Therefore, when the light transmittance of the first display area 100 is greater than that of the second display area 200, the luminance difference between the first display area 100 and the second display area 200 at a large viewing angle can be reduced by reducing the viewing angle luminance of the first display area 100, thereby improving the uniformity of the overall luminance of the display panel.

[0040] The display panel provided by the embodiment of the present application, in the case that the light transmittance of the first display area is greater than that of the second display area, the first light emitting body in the first display area comprises a first side light emitting surface, the second light emitting body in the second display area comprises a second side light emitting surface, the relative position relationship between the first side light emitting point on the first side light emitting surface and the first side light emitting surface is the same as the relative position relationship between the second side light emitting point on the second side light emitting surface and the second side light emitting surface, and the included angle between the tangent plane at the first side light emitting point and the substrate is smaller than the included angle between the tangent plane at the second side light emitting point and the substrate, so that the large-angle brightness of the first display area is lower than the large-angle brightness of the second display area, and thus the brightness difference between the first display area and the second display area can be reduced, and the uniformity of the brightness of the display panel is ensured.

[0041] Optionally, Figure 4 The cross-sectional structure diagram of another display panel provided by the embodiment of the present application is shown in FIG. 2, which shows that the display panel further comprises a pixel definition layer 80, the pixel definition layer 80 comprises a first pixel definition layer 81 located in the first display area 100 and a second pixel definition layer 82 located in the second display area 200, the first light emitting body 11 is arranged in the first pixel definition layer 81, and the second light emitting body 21 is arranged in the second pixel definition layer 82; along the thickness direction Z of the display panel, the thickness of the first pixel definition layer 81 is smaller than the thickness of the second pixel definition layer 82. Figure 4

[0042] The preparation material of the first pixel definition layer 81 and the second pixel definition layer 82 can comprise an organic material or an inorganic material, and the inorganic material comprises but is not limited to silicon oxide or silicon nitride, and the embodiment of the present application does not make any limitation in this regard. In addition, the first pixel definition layer 81 and the second pixel definition layer 82 can be prepared in the same layer or in different layers, and the embodiment of the present application does not make any limitation in this regard, and can be set according to the actual situation. Figure 4 Only for example.

[0043] Continuing to refer to Figure 3 and Figure 4 ​As shown, along the thickness direction Z of the display panel, the thickness d1 of the first pixel definition layer 81 is less than the thickness d2 of the second pixel definition layer 82, by setting the first light emitting body 10 in the first pixel definition layer 81 and the second light emitting body 21 in the second pixel definition layer 82, the thickness of the light emitting body can be adjusted by changing the thickness of the pixel definition layer. It can be understood that the smaller the thickness of the light emitting body, the smaller the inclination of the side light emitting surface of the light emitting body in the first direction X. In other words, when the thickness d1 of the first pixel definition layer 81 is less than the thickness d2 of the second pixel definition layer 82, correspondingly, the thickness of the first light emitting body 10 will also be less than the thickness of the second light emitting body 20, at this time, the included angle θ1 between the tangent plane at the first side light emitting point C and the substrate 140 will be smaller than the included angle θ2 between the tangent plane at the second side light emitting point D and the substrate 140. In this way, the light rays emitted through the first display area 100 will have a smaller viewing angle brightness than the light rays emitted through the second display area 200, thereby reducing the display brightness of the first display area 100 at a large viewing angle, and further reducing the brightness difference between the first display area 100 and the second display area 200, and improving the brightness uniformity of the display panel.

[0044] It should be noted that the specific values of the thickness d1 of the first pixel definition layer 81 and the thickness d2 of the second pixel definition layer 82 are not specially limited in the embodiment of the present application, and can be selectively set according to actual needs.

[0045] Optionally, Figure 5 Another cross-sectional structure schematic diagram of a display panel provided by the embodiment of the present application is shown in FIG. 4. Figure 5 As shown, the first light emitting body 11 includes a first light emitting surface 112 close to the substrate 140, and the second light emitting body 21 includes a second light emitting surface 212 close to the substrate; the area of the first light emitting surface 112 is less than the area of the second light emitting surface 212.

[0046] Specifically, along the thickness direction Z of the display panel, the first light emitting body 11 and the second light emitting body 21 have the same thickness, by reducing the area of the first light emitting surface 112, so that the area of the first light emitting surface 112 is less than the area of the second light emitting surface 212, the slope of the first side light emitting surface 111 can be made smaller than the slope of the second side light emitting surface 211, that is, the included angle θ1 between the tangent plane at the first side light emitting point C and the substrate 140 is smaller than the included angle θ2 between the tangent plane at the second side light emitting point D and the substrate 140, thereby the display brightness of the first display area 100 at a large viewing angle can be reduced, and the brightness difference between the first display area 100 and the second display area 200 can be reduced, thereby the brightness uniformity of the display panel can be improved.

[0047] It should be noted that the area of the light emitting surface of the first light emitting body 11 away from the substrate 140 (i.e. the third light emitting surface 113) in the embodiment can be the same as the area of the light emitting surface of the second light emitting body 20 away from the substrate 140 (i.e. the fourth light emitting surface 213), or the area of the light emitting surface of the first light emitting body 11 away from the substrate 140 is greater than the area of the light emitting surface of the second light emitting body 20 away from the substrate 140, which is not limited by the present application.

[0048] Optionally, continuing to refer to Figure 5 It is shown that the first light emitting body 11 includes a third light emitting surface 113 away from the substrate 140, and the second light emitting body 21 includes a fourth light emitting surface 213 away from the substrate; the area of the third light emitting surface 113 is greater than the area of the fourth light emitting surface 213.

[0049] It can be understood that along the thickness direction Z of the display panel, the first light emitting body 11 and the second light emitting body 21 have the same thickness, by increasing the area of the third light emitting surface 113, so that the area of the third light emitting surface 113 is greater than the area of the fourth light emitting surface 213, the slope of the first side light emitting surface 111 can also be smaller than the slope of the second side light emitting surface 211, that is, the included angle θ1 between the tangent plane at the first side light emitting point C and the substrate 140 is smaller than the included angle θ2 between the tangent plane at the second side light emitting point D and the substrate 140, thereby the display brightness of the first display area 100 under a large viewing angle can be reduced, the brightness difference between the first display area 100 and the second display area 200 can be reduced, and the brightness uniformity of the display panel can be improved.

[0050] It should be noted that the area of the light emitting surface of the first light emitting body 11 close to the substrate 140 (i.e. the first light emitting surface 112) in the embodiment can be the same as the area of the light emitting surface of the second light emitting body 20 close to the substrate 140 (i.e. the second light emitting surface 212), or the area of the light emitting surface of the first light emitting body 11 close to the substrate 140 is smaller than the area of the light emitting surface of the second light emitting body 20 close to the substrate 140, which is not limited by the present application.

[0051] Optionally, Figure 6 A cross-sectional structure schematic diagram of another display panel provided by the embodiment of the present application is shown in FIG. 6. Figure 7 A cross-sectional structure schematic diagram of another display panel provided by the embodiment of the present application is shown in FIG. 6. Figure 6 A cross-sectional structure schematic diagram of another display panel provided by the embodiment of the present application is shown in FIG. 6. Figure 6 A cross-sectional structure schematic diagram of another display panel provided by the embodiment of the present application is shown in FIG. 6. Figure 7 It can be understood that along the thickness direction Z of the display panel, the first light emitting body 11 and the second light emitting body 21 have the same thickness, by increasing the area of the third light emitting surface 113, so that the area of the third light emitting surface 113 is greater than the area of the fourth light emitting surface 213, the slope of the first side light emitting surface 111 can also be smaller than the slope of the second side light emitting surface 211, that is, the included angle θ1 between the tangent plane at the first side light emitting point C and the substrate 140 is smaller than the included angle θ2 between the tangent plane at the second side light emitting point D and the substrate 140, thereby the display brightness of the first display area 100 under a large viewing angle can be reduced, the brightness difference between the first display area 100 and the second display area 200 can be reduced, and the brightness uniformity of the display panel can be improved.

[0052] Specifically, since the included angle θ3 between the tangent plane at the first side light exit point C1 close to the substrate 140 and the substrate 140 is greater than the included angle θ4 between the tangent plane at the first side light exit point C2 far from the substrate 140 and the substrate 140, thus, the first side light exit surface 111 is a curved surface structure with a certain curvature, and the closer to the side of the substrate 140, the greater the included angle between the first side light exit surface 111 and the first direction X. Referring to Figure 6 As shown, the first side light exit surface 111 on both sides of the first light emitting body 11 forms a "inverted eight" cross-sectional view.

[0053] Continuing to refer to Figure 7 As shown, by making the included angle between the tangent plane at the first side light exit point C2 far from the substrate 140 on the first side light exit surface 111 and the substrate 140 smaller, the light ray G2 irradiated to the first side light exit point C2 far from the substrate 140 can be directly reflected to become a light ray G3, and then emitted by the light exit surface of the display panel. It can be understood that if the included angle between the tangent plane at the first side light exit point C2 far from the substrate 140 and the substrate 140 is relatively large, the light ray G2 cannot be totally reflected and directly enters the organic insulating film layer (such as the pixel definition layer), is emitted by the light ray transmission path G2-G2'-G2", and the light ray G2" deviates from the center of the first light emitting body compared with the light ray G3. Thus, by reducing the included angle between the tangent plane at the first side light exit point C2 far from the substrate 140 on the first side light exit surface 111 and the substrate 140, the viewing angle brightness of the first display area 100 is reduced.

[0054] At the same time, by making the included angle between the tangent plane at the first side light exit point C1 close to the substrate 140 on the first side light exit surface 111 and the substrate 140 larger, the light ray G1 irradiated to the first side light exit point C1 close to the substrate 140 can be directly refracted in the organic insulating film layer (such as the pixel definition layer), and then emitted by the light ray transmission path G1-G4-G5, the purpose is to avoid the light ray G1 from being totally reflected and emitted by the light ray G1' away from the center of the first light emitting body. Thus, by increasing the included angle between the tangent plane at the first side light exit point C1 close to the substrate 140 on the first side light exit surface 111 and the substrate 140, the viewing angle brightness of the first display area 100 is also reduced.

[0055] Therefore, by setting the included angle between the tangent plane at the plurality of first side light-emitting points on the first side light-emitting surface 111 and the substrate 140 gradually decreases along the thickness direction Z of the display panel, the light rays can be converged to the center of the first light-emitting body 11 after being refracted or reflected on the first side light-emitting surface 111, so as to reduce the large-angle luminance of the first display area 100, thereby reducing the luminance difference between the first display area 100 and the second display area 200 and improving the display effect of the display panel.

[0056] Optionally, Figure 8 Another cross-sectional structure of a display panel is provided for an embodiment of the present application, as shown in Figure 8 The display panel further includes a first color filter unit 91 and a second color filter unit 92; along the thickness direction Z of the display panel, the first color filter unit 91 at least partially overlaps the first light-emitting element 10, and the second color filter unit 92 at least partially overlaps the second light-emitting element 20; along the thickness direction Z of the display panel, the distance between the first color filter unit 91 and the first light-emitting element 10 is greater than the distance between the second color filter unit 92 and the second light-emitting element 20.

[0057] The first color filter unit 91 and the second color filter unit 92 include but are not limited to one or more of a red color filter unit, a green color filter unit, or a blue color filter unit. It can be understood that, according to the different colors of the first color filter unit 91 and the second color filter unit 92, the same color light can be transmitted.

[0058] It can be understood that, as shown in Figure 8 In the case where the first color filter unit 91 and the second color filter unit 92 have the same area, the distance between the first color filter unit 91 and the first light-emitting element 10 is greater than the distance between the second color filter unit 92 and the second light-emitting element 20, so that the light rays emitted from the center position of the light-emitting surface of the light-emitting body close to the substrate 140 to the end point of the color filter unit are light rays G6 and light rays G7, respectively. It can be seen that the included angle between the light rays G6 and the Z direction plane is smaller than the included angle between the light rays G7 and the Z direction plane. In this way, the viewing angle luminance of the first light-emitting element 10 is smaller than that of the second light-emitting element 20. Therefore, by setting the distance between the first color filter unit 91 and the first light-emitting element 10 to be greater than the distance between the second color filter unit 92 and the second light-emitting element 20, the viewing angle luminance of the first display area 100 can be made smaller than that of the second display area 200, thereby reducing the luminance difference between the first display area 100 and the second display area 200 and improving the display effect of the display panel.

[0059] It should be noted that the embodiment of the present application does not make any limitation on how to realize that the distance between the first color filter unit 91 and the first light emitting element 10 is greater than the distance between the second color filter unit 92 and the second light emitting element 20, for example, by adjusting the thickness of the film layer between the color filter unit and the light emitting element.

[0060] Optionally, continuing to refer to Figure 8 As shown, the display panel further comprises a first encapsulation structure 93 and a second encapsulation structure 94, along the thickness direction Z of the display panel, the first encapsulation structure 93 is located between the first light emitting element 10 and the first color filter unit 91, and the second encapsulation structure 94 is located between the second light emitting element 20 and the second color filter unit 92; the first encapsulation structure 93 comprises at least one first encapsulation layer 931, and the second encapsulation structure 94 comprises at least one second encapsulation layer 941; along the thickness direction Z of the display panel, the first encapsulation structure 93 and the first light emitting element 10 at least partially overlap, and the second encapsulation structure 94 and the second light emitting element 20 at least partially overlap; along the thickness direction Z of the display panel, the thickness d3 of the first encapsulation structure 93 is greater than the thickness d4 of the second encapsulation structure.

[0061] It can be understood that the first encapsulation structure 93 and the second encapsulation structure 94 can be stacked by a multi-layer film structure, which generally comprises at least one inorganic layer and at least one organic layer. The inorganic layer can act as a barrier layer to block water and oxygen, and the organic layer can act as a buffer layer to improve the flexibility of the encapsulation structure. Those skilled in the art can selectively set according to the actual situation, so that the first encapsulation layer 931 and the second encapsulation layer 941 can be inorganic encapsulation layers or organic encapsulation layers, and the embodiment of the present application does not make any limitation.

[0062] Specifically, by adjusting the thickness d3 of the first encapsulation structure 93 and the thickness d4 of the second encapsulation structure, so that d3 is greater than d4, the distance between the first color filter unit 91 and the first light emitting element 10 can be greater than the distance between the second color filter unit 92 and the second light emitting element 20, so as to reduce the viewing angle brightness of the first display area 100, reduce the brightness difference between the first display area 100 and the second display area 200, improve the brightness uniformity of the display panel, and make the display panel have better display effect.

[0063] Optionally, continuing to refer to Figure 8 As shown, the first encapsulation layer 931 comprises at least a first organic encapsulation layer, and the second encapsulation layer 941 comprises at least a second organic encapsulation layer; along the thickness direction Z of the display panel, the thickness of the first organic encapsulation layer is greater than the thickness of the second organic encapsulation layer.

[0064] The first encapsulation layer 931 can be a first organic encapsulation layer, and the second encapsulation layer 941 can be a second organic encapsulation layer, and the materials of the first organic encapsulation layer and the second organic encapsulation layer include but are not limited to organic transparent resin.

[0065] Specifically, by adjusting the thickness of the organic encapsulating layer in the first encapsulating layer 931 and the second encapsulating layer 941, the thickness of the first organic encapsulating layer is greater than the thickness of the second organic encapsulating layer, and then the thickness d3 of the first encapsulating structure 93 is greater than the thickness d4 of the second encapsulating structure, so that the distance between the first color filter unit 91 and the first light emitting element 10 is greater than the distance between the second color filter unit 92 and the second light emitting element 20, the viewing angle brightness of the first display area 100 is reduced, the brightness difference between the first display area 100 and the second display area 200 is reduced, and the display effect of the display panel is improved. Further, compared with inorganic materials, organic materials can achieve a greater thickness, that is, the first encapsulating layer 931 is set as the first organic encapsulating layer, and the second encapsulating layer 941 is set as the second organic encapsulating layer, and the scheme of adjusting the film layer thickness by organic materials is easier to realize, ensuring that the display panel preparation process is simple.

[0066] Optionally, in another embodiment, Figure 9 Another cross-sectional structure schematic diagram of a display panel provided by an embodiment of the present application is shown in FIG. 6. Figure 9 As shown, the first light emitting body 10 includes a first light emitting surface 112 close to one side of the substrate 140 and a third light emitting surface 113 away from one side of the substrate 140, and the second light emitting body 20 includes a second light emitting surface 212 close to one side of the substrate 140 and a fourth light emitting surface 213 away from one side of the substrate 140; along the thickness direction Z of the display panel, the distance between the first light emitting surface 112 and the substrate 140 is less than the distance between the second light emitting surface 212 and the substrate 140, and the distance between the third light emitting surface 113 and the substrate 140 is less than the distance between the fourth light emitting surface 213 and the substrate 140.

[0067] Specifically, the distance between the first light emitting surface 112 and the substrate 140 is less than the distance between the second light emitting surface 212 and the substrate 140, and the distance between the third light emitting surface 113 and the substrate 140 is less than the distance between the fourth light emitting surface 213 and the substrate 140, which can be understood as that the first light emitting body 10 is closer to the substrate 140 than the second light emitting body 20. At this time, when the first color filter unit 91 and the second color filter unit 92 are located at the same horizontal plane, the distance between the first color filter unit 91 and the first light emitting element 10 can be greater than the distance between the second color filter unit 92 and the second light emitting element 20, thereby reducing the viewing angle brightness of the first display area 100, reducing the brightness difference between the first display area 100 and the second display area 200, and improving the display effect of the display panel.

[0068] In addition, the side of the first light emitting element 10 and the second light emitting element 20 away from the substrate 140 is usually also provided with other organic film layers, such as a planarization layer 120, Figure 9 which is only given by way of example.

[0069] Optionally, with reference to the above Figure 9 As shown, the display panel further comprises a pixel definition layer 80 and at least one organic insulating layer 110 located on the side of the pixel definition layer 80 close to the substrate 140; at least part of the first light emitting body 10 is arranged in the organic insulating layer 110, and at least part of the second light emitting body 20 is arranged in the pixel definition layer 80.

[0070] The material of the organic insulating layer 110 includes but is not limited to organic transparent resin.

[0071] It can be understood that Figure 9 It is only exemplarily given that the first light emitting body 10 is arranged in both the pixel definition layer 80 and the organic insulating layer 110, and the second light emitting body 20 is arranged in the pixel definition layer 80, at this time, the anode layer in the second light emitting body 20 needs to be electrically connected with the metal layer where the anode layer 40 of the first light emitting body 10 is located through a via hole. Figure 9 It can be obviously seen that the distance between the first light emitting surface 112 and the substrate 140 is less than the distance between the second light emitting surface 212 and the substrate 140, and the distance between the third light emitting surface 113 and the substrate 140 is less than the distance between the fourth light emitting surface 213 and the substrate 140, so that the distance between the first color filter unit 91 and the first light emitting element 10 is greater than the distance between the second color filter unit 92 and the second light emitting element 20, thereby reducing the viewing angle brightness of the first display area 100, reducing the brightness difference between the first display area 100 and the second display area 200, and improving the display effect of the display panel.

[0072] It should be noted that in another embodiment, the second light emitting body 20 can also be arranged in both the pixel definition layer 80 and the organic insulating layer 110, and by adjusting the thickness of the first light emitting body 10 in the organic insulating layer 110 to be greater than the thickness of the second light emitting body 20 in the organic insulating layer 110, the distance between the first light emitting surface 112 and the substrate 140 can also be made less than the distance between the second light emitting surface 212 and the substrate 140, and the distance between the third light emitting surface 113 and the substrate 140 can also be made less than the distance between the fourth light emitting surface 213 and the substrate 140. In addition, in still another embodiment, the first light emitting body 10 can be arranged only in the organic insulating layer 110, and the second light emitting body 20 can be arranged in both the pixel definition layer 80 and the organic insulating layer 110, and the distance between the first light emitting surface 112 and the substrate 140 can also be made less than the distance between the second light emitting surface 212 and the substrate 140, and the distance between the third light emitting surface 113 and the substrate 140 can also be made less than the distance between the fourth light emitting surface 213 and the substrate 140. Here, no longer detailed, all can achieve the effect of reducing the viewing angle brightness of the first display area 100, reducing the brightness difference between the first display area 100 and the second display area 200, and improving the brightness uniformity of the display panel.

[0073] Optionally, Figure 10 Another cross-sectional structure schematic diagram of a display panel provided by an embodiment of the present application is shown in FIG. 6. Figure 10 As shown in FIG. 6, the display panel further includes a light shielding unit 130, which includes a first light shielding sub-unit 131 located in the first display area 100 and a second light shielding sub-unit 132 located in the second display area 200; the light shielding area of the first light shielding sub-unit 131 is smaller than the light shielding area of the second light shielding sub-unit 132 in unit area.

[0074] It can be understood that the light shielding unit 130 can be a light shielding metal layer or a black light shielding layer (BM) in the display panel, and the embodiments of the present application do not limit this. Since the transmittance of the first display area 100 is greater than that of the second display area 200, the first display area 100 can be a transparent display area, including but not limited to an under-screen camera area or a fingerprint recognition area, etc., and therefore it is necessary to set the light shielding area of the first light shielding sub-unit 131 to be smaller than the light shielding area of the second light shielding sub-unit 132 in unit area, so as to improve the transmittance of the first display area 100 and further improve the display effect of the display panel.

[0075] It should be noted that the embodiments of the present application do not make any limitation on the number and spacing gap of the first light shielding sub-unit 131 and the second light shielding sub-unit 132, as long as the light shielding area of the first light shielding sub-unit 131 is smaller than the light shielding area of the second light shielding sub-unit 132 in unit area.

[0076] Optionally, Figure 11 Another structure schematic diagram of a display panel provided by an embodiment of the present application is shown in FIG. 7. Figure 12 As shown in FIG. 7, Figure 11 A cross-sectional structure schematic diagram along the B-B' direction is shown in FIG. 7, in combination with Figure 11 and Figure 12 As shown in FIG. 7, the display panel further includes a third display area 300, the third display area 300 surrounds at least part of the first display area 100, and the second display area 200 surrounds at least part of the third display area 300; the third display area 300 includes a third light emitting element 30, the third light emitting element 30 includes a third light emitting main body 31, the third light emitting main body 31 includes a third side light emitting face 311, and the third side light emitting face 311 includes a third side light emitting point E; the relative positional relationship between the third side light emitting point E and the third side light emitting face 311 along the thickness direction Z of the display panel is the same as the relative positional relationship between the first side light emitting point C and the first side light emitting face 111; the included angle θ3 between the tangent plane at the third side light emitting point E and the substrate 140 is smaller than the included angle θ2 between the tangent plane at the second side light emitting point D and the substrate 140, and is greater than the included angle θ1 between the tangent plane at the first side light emitting point C and the substrate 140.

[0077] It can be understood that the specific positional relationship between the first display area 100, the second display area 200 and the third display area 300 is not limited in the embodiments of the present application. Figure 11 The third display area 300 is exemplarily shown as surrounding the first display area 100, and the second display area 200 surrounds the third display area 300. The third display area 300 can be a transition area between the first display area 100 and the second display area 200.

[0078] Further, the light transmittance of the first display area 100 is greater than that of the second display area 200, and the light transmittance of the third display area 300 can be between the light transmittance of the first display area 100 and the light transmittance of the second display area 200.

[0079] Further, the third light emitting element 30 can be prepared in the same process as the first light emitting element 10 and the second light emitting element 20, and has the same structure, which will not be described here.

[0080] Further, along the thickness direction Z of the display panel, the relative positional relationship between the third side light exit point E and the third side light exit surface 311 is the same as that between the first side light exit point C and the first side light exit surface 111; the included angle θ3 between the tangent plane at the third side light exit point E and the substrate 140 is smaller than the included angle θ2 between the tangent plane at the second side light exit point D and the substrate 140, and is greater than the included angle θ1 between the tangent plane at the first side light exit point C and the substrate 140, so that the viewing angle luminance between the first display area 100 and the second display area 200 is transitioned through the third display area 300, avoiding the appearance of obvious light-dark boundaries, so that the luminance uniformity of the display panel can be further improved, and the display effect of the display panel is improved.

[0081] Optionally, continuing to refer to Figure 12 As shown, the third light emitting body includes a fifth light emitting surface close to the substrate side and a sixth light emitting surface away from the substrate side, and the luminance uniformity of the display panel is improved by setting the area of the fifth light emitting surface greater than the area of the first light emitting surface and the area of the fifth light emitting surface smaller than the area of the second light emitting surface. The specific principle will not be described here.

[0082] In another embodiment, the luminance uniformity of the display panel can also be improved by setting the area of the sixth light emitting surface smaller than the area of the third light emitting surface and the area of the sixth light emitting surface greater than the area of the fourth light emitting surface. The specific principle will not be described here.

[0083] Optionally, the display panel further comprises a third color filter unit, the third color filter unit at least partially overlaps with the third light emitting element along the thickness direction of the display panel, the distance between the first color filter unit and the first light emitting element is greater than the distance between the third color filter unit and the third light emitting element along the thickness direction of the display panel, and the distance between the third color filter unit and the third light emitting element is greater than the distance between the second color filter unit and the second light emitting element.

[0084] It can be understood that the arrangement of the third light emitting element 30 in the third display area 300 is between the corresponding arrangements of the first display area 100 and the second display area 200 in terms of the thickness of the film layer, the change of the included angle between the side light exit surface and the substrate, the area of the light exit surface, or the arrangement of the distance between the substrate or the color filter unit, so as to realize the transition of the first display area 100 and the second display area 200, ensure the uniformity of the display brightness of the display panel, and improve the display effect.

[0085] Based on the same inventive concept, the embodiment of the present application also provides a display device comprising the display panel in any of the above embodiments, Figure 13 The structural schematic diagram of a display device provided by the embodiment of the present application is shown in Figure 13 The display device 1 comprises the display panel 2 of any embodiment of the present application, and therefore the display device 1 provided by the embodiment of the present application has the technical effects of the technical solutions in any of the above embodiments. The same or corresponding structures and explanations of terms are not repeated here. The display device 1 provided by the embodiment of the present application can be a mobile phone as shown in Figure 13 The display device 1 provided by the embodiment of the present application can be a mobile phone as shown in

[0086] Optionally, continuing to refer to Figure 13 The display device further comprises a photosensitive structure 400, and the photosensitive structure 400 is arranged corresponding to the first display area 100. The photosensitive structure 400 includes but is not limited to a fingerprint sensor, a camera, or other photosensitive sensors, etc.

[0087] The above specific embodiments do not constitute a limitation on the protection scope of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent replacement and improvement made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A display panel, characterized in that, It includes a first display area and a second display area, wherein the light transmittance of the first display area is greater than that of the second display area and the second display area surrounds at least a portion of the first display area; The first display area includes a first light-emitting element, the first light-emitting element includes a first light-emitting body, and the second display area includes a second light-emitting element, the second light-emitting element includes a second light-emitting body; The first light-emitting body includes a first side light-emitting surface, the first side light-emitting surface includes a first side light-emitting point, the second light-emitting body includes a second side light-emitting surface, the second side light-emitting surface includes a second side light-emitting point; along the thickness direction of the display panel, the relative positional relationship between the first side light-emitting point and the first side light-emitting surface and the relative positional relationship between the second side light-emitting point and the second side light-emitting surface are the same; The angle between the tangent plane at the first light-emitting point and the substrate is smaller than the angle between the tangent plane at the second light-emitting point and the substrate.

2. The display panel according to claim 1, characterized in that, The display panel further includes a pixel definition layer, which includes a first pixel definition layer located in the first display area and a second pixel definition layer located in the second display area. The first light-emitting body is disposed in the first pixel definition layer, and the second light-emitting body is disposed in the second pixel definition layer. Along the thickness direction of the display panel, the thickness of the first pixel definition layer is less than the thickness of the second pixel definition layer.

3. The display panel according to claim 1, characterized in that, The first light-emitting body includes a first light-emitting surface near the substrate, and the second light-emitting body includes a second light-emitting surface near the substrate. The area of ​​the first luminous surface is smaller than the area of ​​the second luminous surface.

4. The display panel according to claim 1, characterized in that, The first light-emitting body includes a third light-emitting surface on the side away from the substrate, and the second light-emitting body includes a fourth light-emitting surface on the side away from the substrate; The area of ​​the third luminous surface is greater than the area of ​​the fourth luminous surface.

5. The display panel according to claim 1, characterized in that, The first side light-emitting surface includes a plurality of first side light-emitting points; Of any two first side-emitting points, the angle between the tangent plane of the first side-emitting point closer to the substrate and the substrate is greater than the angle between the tangent plane of the first side-emitting point farther from the substrate and the substrate.

6. The display panel according to claim 1, characterized in that, The display panel further includes a first color filter unit and a second color filter unit; Along the thickness direction of the display panel, the first color filter unit and the first light-emitting element overlap at least partially, and the second color filter unit and the second light-emitting element overlap at least partially. Along the thickness direction of the display panel, the distance between the first color filter unit and the first light-emitting element is greater than the distance between the second color filter unit and the second light-emitting element.

7. The display panel according to claim 6, characterized in that, The display panel further includes a first encapsulation structure and a second encapsulation structure. Along the thickness direction of the display panel, the first encapsulation structure is located between the first light-emitting element and the first color filter unit, and the second encapsulation structure is located between the second light-emitting element and the second color filter unit. The first encapsulation structure includes at least one first encapsulation layer, and the second encapsulation structure includes at least one second encapsulation layer. Along the thickness direction of the display panel, the first encapsulation structure at least partially overlaps with the first light-emitting element, and the second encapsulation structure at least partially overlaps with the second light-emitting element; Along the thickness direction of the display panel, the thickness of the first encapsulation structure is greater than the thickness of the second encapsulation structure.

8. The display panel according to claim 7, characterized in that, The first encapsulation layer includes at least a first organic encapsulation layer, and the second encapsulation layer includes at least a second organic encapsulation layer; Along the thickness direction of the display panel, the thickness of the first organic encapsulation layer is greater than the thickness of the second organic encapsulation layer.

9. The display panel according to claim 6, characterized in that, The first light-emitting body includes a first light-emitting surface near the substrate and a third light-emitting surface away from the substrate; the second light-emitting body includes a second light-emitting surface near the substrate and a fourth light-emitting surface away from the substrate. Along the thickness direction of the display panel, the distance between the first emitting surface and the substrate is less than the distance between the second emitting surface and the substrate, and the distance between the third emitting surface and the substrate is less than the distance between the fourth emitting surface and the substrate.

10. The display panel according to claim 9, characterized in that, The display panel further includes a pixel definition layer and at least one organic insulating layer located on the side of the pixel definition layer near the substrate; At least a portion of the first light-emitting body is disposed in the organic insulating layer, and at least a portion of the second light-emitting body is disposed in the pixel definition layer.

11. The display panel according to claim 1, characterized in that, The display panel further includes a light-shielding unit, which includes a first light-shielding sub-unit located in the first display area and a second light-shielding sub-unit located in the second display area; Within a unit area, the light-blocking area of ​​the first light-blocking subunit is smaller than that of the second light-blocking subunit.

12. The display panel according to claim 1, characterized in that, The display panel further includes a third display area, the third display area surrounding at least a portion of the first display area, and the second display area surrounding at least a portion of the third display area; The third display area includes a third light-emitting element, the third light-emitting element includes a third light-emitting body, the third light-emitting body includes a third side light-emitting surface, the third side light-emitting surface includes a third side light-emitting point; Along the thickness direction of the display panel, the relative positional relationship between the third side light-emitting point and the third side light-emitting surface is the same as the relative positional relationship between the first side light-emitting point and the first side light-emitting surface; The angle between the tangent plane at the third light-emitting point and the substrate is smaller than the angle between the tangent plane at the second light-emitting point and the substrate, and larger than the angle between the tangent plane at the first light-emitting point and the substrate.

13. A display device, characterized in that, Includes the display panel as described in any one of claims 1-12.

14. The display device according to claim 13, characterized in that, The display device further includes a photosensitive structure, which is disposed corresponding to the first display area.

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