Display panel and display device

Abstract

An embodiment of the present invention discloses a display panel and a display device, wherein the curvature of the light-emitting surface of the first display area of ​​the display panel is greater than the curvature of the second display area: by adjusting the relationship between the angle α1 between the line connecting the first edge point of the first color filter layer in the first display area and the center of the first light-emitting element and the thickness direction of the display panel and the angle α2 between the line connecting the second edge point of the second color filter layer and the center of the second light-emitting element and the thickness direction of the display panel, so that α1>α2, the filtering efficiency of the first color filter layer in the curved display area for the first light-emitting element can be improved, the light emitting brightness of the first light-emitting element can be improved by utilizing the first color filter layer, the uniformity of the light emitting brightness of the first display area and the second display area can be ensured, and the normal display of the curved display panel can be ensured.

Description

Technical Field

[0001] Embodiments of the present invention relate to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] Currently, curved display panels offer a more immersive viewing experience than traditional flat-panel displays, resulting in an increasingly widespread adoption. However, the curvature of these panels causes relative movement of the film layers within them, resulting in differences in display quality between the flat and curved display areas. Summary of the Invention

[0003] Embodiments of the present invention provide a display panel and a display device, which ensure display uniformity in different areas of the display panel and the same display effect of the display panel by adjusting the position and thickness of the color filter layer in the curved display area.

[0004] In a first aspect, an embodiment of the present invention provides a display panel, comprising a first display area and a second display area, wherein a curvature of a light emitting surface of the first display area is greater than a curvature of a light emitting surface of the second display area.

[0005] The first display area includes a plurality of first light-emitting elements and a first color filter layer located on a light-emitting side of the first light-emitting elements; the first color filter layer includes a first color filter body and a first edge point located on an edge of the first color filter body, the first edge point being located on a side of the first color filter body away from the second display area and on a side of the first light-emitting element away from the substrate; an angle α1 is formed between a line connecting the first edge point and the center of the first light-emitting element and a thickness direction of the display panel;

[0006] The second display area includes a plurality of second light-emitting elements and a second color filter layer located on the light-emitting side of the second light-emitting element, the color of the second color filter layer is the same as the color of the first color filter layer; the second color filter layer includes a second color filter body and a second edge point located on the edge of the second color filter body, the second edge point is located on the side of the second color filter body away from the first display area, and is located on the side of the second light-emitting element away from the substrate; the angle between the line between the second edge point and the center of the second light-emitting element and the thickness direction of the display panel is α2, where α1>α2.

[0007] In a second aspect, an embodiment of the present invention further provides a display device, comprising the display panel provided in the first aspect.

[0008] The display panel provided by an embodiment of the present invention improves the filtering efficiency of the first color filter layer in the curved display area for the first light-emitting element by utilizing the first color filter layer to enhance the light output brightness of the first light-emitting element, thereby ensuring uniform light output brightness in the first display area and the second display area, and ensuring normal display of the curved display panel, by adjusting the relationship between the angle α1 between the line connecting the first edge point of the first color filter layer in the first display area and the center of the first light-emitting element and the thickness direction of the display panel, and the angle α2 between the line connecting the second edge point of the second color filter layer and the center of the second light-emitting element and the thickness direction of the display panel, so as to ensure α1>α2. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, although the drawings described below are some specific embodiments of the present invention, for those skilled in the art, the basic concepts of the device structure, driving method and manufacturing method disclosed and suggested by the various embodiments of the present invention can be expanded and extended to other structures and drawings. Undoubtedly, these should all be within the scope of the claims of the present invention.

[0010] Figure 1 It is a structural schematic diagram of a display panel in the related art;

[0011] Figure 2 A schematic structural diagram of a display panel provided by an embodiment of the present invention;

[0012] Figure 3 A schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0013] Figure 4 A schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0014] Figure 5 for Figure 2 A partial enlarged schematic diagram of the N3 and N4 regions;

[0015] Figure 6 for Figure 2 A partial enlarged schematic diagram of the N5 and N6 regions;

[0016] Figure 7 for Figure 3 A partially enlarged schematic diagram of the first color filter layer of the same color;

[0017] Figure 8 A schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0018] Figure 9A schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0019] Figure 10 A schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0020] Figure 11 A schematic structural diagram of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0021] To make the objectives, technical solutions, and advantages of the present invention more clear, the following will refer to the accompanying drawings of the embodiments of the present invention to clearly and completely describe the technical solutions of the present invention through implementation methods. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the basic concepts disclosed and suggested by the embodiments of the present invention, all other embodiments obtained by those skilled in the art are within the scope of protection of the present invention.

[0022] Figure 1 is a schematic diagram of the structure of a display panel in the related art, such as Figure 1 As shown, the display panel 100 includes a curved display area 11 and a flat display area 12. The curvature of the curved display area 11 at the light-emitting surface is greater than that of the flat display area 12. The curved display area 11 includes a plurality of first light-emitting elements 111 and a first color filter layer 112 located on the light-emitting side of the first light-emitting element 111. The flat display area 12 includes a plurality of second light-emitting elements 121 and a second color filter layer 122 located on the light-emitting side of the second light-emitting element 121. The light S0 emitted by the second light-emitting element 121 is filtered by the second color filter layer 122 to form a display image. The display panel 100 also includes a shading layer 123 located between two adjacent color filter layers. The color of the first color filter layer 112 is the same as that of the second color filter layer 122. Due to the greater curvature of the curved display area 11, the actual light-emitting area of ​​the first light-emitting element 111 in the curved display area 11 is easily reduced, and the luminous brightness of the first light-emitting element 111 itself is reduced; at the same time, the bending causes the relative position accuracy of the first light-emitting element 111 and its corresponding first color filter layer 112 to shift. As shown in the bending direction W in the figure, part of the light S1 emitted by the first light-emitting element 111 away from the flat display area 12 is blocked by the shading layer 123, and the luminous brightness of the display image formed after part of the light S2 emitted by the first light-emitting element 111 is filtered by its corresponding first color filter layer 112 is reduced, which makes the luminous brightness of the curved display area 11 relative to the flat display area 12 lower, and the display uniformity of the display panel is poor, which seriously affects the display effect of the display panel.

[0023] To solve the above technical problems, an embodiment of the present invention provides a display panel comprising a first display area and a second display area, wherein the curvature of a light-emitting surface of the first display area is greater than that of the second display area: the first display area comprises a plurality of first light-emitting elements and a first color filter layer located on a light-emitting side of the first light-emitting elements; the first color filter layer comprises a first color filter body and a first edge point located at an edge of the first color filter body, the first edge point being located on a side of the first color filter body away from the second display area and on a side of the first light-emitting elements away from the substrate; an angle α1 is formed between a line connecting the first edge point and the center of the first light-emitting element and the thickness direction of the display panel; the second display area comprises a plurality of second light-emitting elements and a second color filter layer located on a light-emitting side of the second light-emitting elements, the color of the second color filter layer being the same as the color of the first color filter layer; the second color filter layer comprises a second color filter body and a second edge point located at an edge of the second color filter body, the second edge point being located on a side of the second color filter body away from the first display area and on a side of the second light-emitting elements away from the substrate; an angle α2 is formed between a line connecting the second edge point and the center of the second light-emitting element and the thickness direction of the display panel, wherein α1>α2. By adopting the above technical solution, by adjusting the relationship between the angle α1 between the line connecting the first edge point of the first color filter layer located in the first display area and the center of the first light-emitting element and the thickness direction of the display panel, and the angle α2 between the line connecting the second edge point of the second color filter layer and the center of the second light-emitting element and the thickness direction of the display panel, so that α1>α2, the filtering efficiency of the first color filter layer on the first light-emitting element can be improved, and the brightness of the light output of the first light-emitting element can be improved by utilizing the first color filter layer, thereby ensuring uniform brightness of the light in the first display area and the second display area, and ensuring normal display of the curved display panel.

[0024] The above is the core concept of the present invention. The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0025] Figure 2 A schematic structural diagram of a display panel provided by an embodiment of the present invention is shown in FIG. Figure 3 A schematic structural diagram of another display panel provided by an embodiment of the present invention; Figure 4 A schematic diagram of the structure of another display panel provided by an embodiment of the present invention. Figure 2-Figure 4As shown, the display panel 200 provided by the embodiment of the present invention includes a first display area 21 and a first display area 22, and the curvature of the light-emitting surface of the first display area 21 is greater than the curvature of the first display area 22: the first display area 21 includes a plurality of first light-emitting elements 211 and a first color filter layer 212 located on the light-emitting side of the first light-emitting element 211; the first color filter layer 212 includes a first color filter body 2121 and a first edge point a located at the edge of the first color filter body 2121, the first edge point a is located on the side of the first color filter body 2121 away from the first display area 22, and is located on the side of the first light-emitting element 211 away from the substrate; the line between the first edge point a and the center of the first light-emitting element 211 is equal to the thickness of the display panel 200 The angle between the degrees direction (shown as the Z direction in the figure) is α1; the first display area 22 includes a plurality of second light-emitting elements 221 and a second color filter layer 222 located on the light-emitting side of the second light-emitting element 221, and the color of the second color filter layer 222 is the same as the color of the first color filter layer 212; the second color filter layer 222 includes a second color filter body 2221 and a second edge point b located on the edge of the second color filter body 2221, the second edge point b is located on the side of the second color filter body 2221 away from the first display area 21, and is located on the side of the second light-emitting element 221 away from the substrate; the angle between the line between the second edge point b and the center of the second light-emitting element 221 and the thickness direction of the display panel 200 is α2, wherein α1>α2.

[0026] Exemplarily, the display panel 200 includes a first display area 21 and a first display area 22. The curvature of the light-emitting surface of the first display area 21 is greater than that of the first display area 22. The first display area 21 is a flat area, i.e., the curvature of the first display area 21 is 0, and the first display area 22 is a curved area with a curvature greater than 0. The display panel 200 may include other numbers of first display areas 21 and first display areas 22. The embodiment of the present invention does not specifically limit the number of first display areas 21 and first display areas 22. The display panel 200 also includes a substrate 201, which may be a flexible material such as ultra-thin glass, metal foil, or polymer plastic material. The substrate 201 can block oxygen and moisture, preventing moisture or impurities from diffusing into the display panel 200 through the substrate 201. The first display area 21 includes a plurality of first light-emitting elements 211 and a first color filter layer 212 located on the light-emitting side of the first light-emitting elements 211. The second display area 22 includes a plurality of second light-emitting elements 221 and a second color filter layer 222 located on the light-emitting side of the second light-emitting elements 221. The color of the second color filter layer 222 is the same as that of the first color filter layer 212. The first light-emitting elements 211 and the second light-emitting elements 221 include organic light-emitting diodes (OLEDs), micro light-emitting diodes (Micro LEDs), active-matrix organic light-emitting diodes (AMOLEDs), quantum dot light-emitting diodes (QLEDs), etc. The first color filter layer 212 and the second color filter layer 222 can transmit light of a specified wavelength and only transmit light emitted by the light-emitting elements of the corresponding color. The first color filter layer 212 and the second color filter layer 222 can transmit light of a specified wavelength and only transmit light emitted by the light-emitting elements of the corresponding color. The first color filter layer 212, the second color filter layer 222, ... The first color filter layer 212 and the second color filter layer 222 are used to replace the traditional polarizer. On the one hand, the purity of the light emitted by the first light-emitting element 211 can be improved, the light emission efficiency of the display device can be effectively improved, and the imaging effect of the display panel 200 can be improved; on the other hand, the color filter layer can also be called color resistance, which can block other colors of light from the outside from entering the display panel 200, play a role in anti-reflection, and increase the display contrast of the display panel 200; on the other hand, the use of a thinner color filter layer to replace the polarizer can improve the bending characteristics of the display panel 200 and meet the bending requirements of the flexible display panel 200.

[0027] Furthermore, the first color filter layer 212 includes a first color filter body 2121 and a first edge point a located at the edge of the first color filter body 2121. The first edge point a is located on the side of the first color filter body 2121 away from the first display area 22 and on the side of the first light-emitting element 211 away from the substrate 201, that is, the upper right corner point of the first color filter body 2121 in the XZ plane in the figure. The angle between the line connecting the first edge point a and the center of the first light-emitting element 211 and the thickness direction of the display panel 200 (as shown in the Z direction in the figure) is α1; the second color filter layer 222 includes a second color filter body 2221 and a second edge point b located at the edge of the second color filter body 2221. The second edge point b is located on the side of the second color filter body 2221 away from the first display area 21, and is located on the side of the second light-emitting element 221 away from the substrate, that is, the upper right corner of the second color filter body 2221 in the XZ plane of the figure; the angle between the line connecting the second edge point b and the center of the second light-emitting element 221 and the thickness direction of the display panel 200 is α2. The light S0' emitted by the second light-emitting element 221 is filtered and purified by the second color filter layer 222 to form a normal display screen. By adjusting the position, thickness, and shape of the first color filter layer 212 so that α1 > α2, the first color filter layer 212 covers a larger area N1 of the light-emitting region of the first light-emitting element 211 away from the first display area 22 along the W bending direction, as viewed from the XZ plane in the figure. This structure allows all normal viewing angle light emitted by the first light-emitting element 211 to pass through the first color filter layer 212, increasing the filtering efficiency of the first color filter layer 212 for normal viewing angle light emitted by the first light-emitting element 211 and improving the energy utilization rate of the first light-emitting element 211. This solves the problem of the first color filter layer 212 being unable to filter a portion of the light S1 emitted by the first light-emitting element 211 due to the deviation in relative position accuracy between the first light-emitting element 211 and its corresponding first color filter layer 212 due to bending. This improves the brightness of the first display area 21, ensures uniform illumination between the first display area 21 and the first display area 22, and enhances the display quality of the display panel 200.

[0028] The display panel 200 also includes an encapsulation cover plate 202, which is attached to the side of the first and second color filter layers 212 and 222 that is away from the first and second light-emitting elements 211 and 221. During the manufacturing process of the display device 200, the first display area 21 is curved, while the first display area 22 is flat, matching the shape of the encapsulation cover plate 202. This allows the resulting display device to achieve a curved display effect.

[0029] It should be noted that the display panel 200 provided in the embodiment of the present invention also includes other metal film layers, which work together to achieve the normal operation of the display panel 200, such as a driving circuit layer located above the substrate (not shown in the figure). The driving circuit layer is used to drive the light-emitting elements to emit light, and they will not be listed and described one by one here.

[0030] In summary, the display panel provided by the embodiment of the present invention improves the filtering efficiency of the first color filter layer in the curved display area for the first light-emitting element by adjusting the relationship between the angle α1 between the line connecting the first edge point of the first color filter layer located in the first display area and the center of the first light-emitting element and the thickness direction of the display panel, and the angle α2 between the line connecting the second edge point of the second color filter layer and the center of the second light-emitting element and the thickness direction of the display panel, so that α1>α2, and utilizes the first color filter layer to enhance the light output brightness of the first light-emitting element, thereby ensuring uniform light emitting brightness in the first display area and the second display area, and ensuring normal display of the curved display panel.

[0031] Optional, continue to refer to Figure 2-Figure 4 As shown, along the thickness direction of the display panel (as shown in the Z direction in the figure), the first color filter layer 212 covers the first light emitting element 211.

[0032] Specifically, by adjusting the angle α1 between the line connecting the first edge point a of the first color filter layer 212 and the center of the first light-emitting element 211 and the Z direction in the figure, the first color filter layer 212 covers the first light-emitting element 211, ensuring that the light S2 emitted by the first light-emitting element 211 can be filtered by the first color filter layer 212, thereby improving the light purity and light efficiency of the first light-emitting element 211, improving the light brightness of the first display area 21, and ensuring the imaging effect of the display panel 200.

[0033] As a feasible implementation method, combined with Figure 2 As shown, the area of ​​the first color filter layer 212 is larger than the area of ​​the second color filter layer 222 .

[0034] Specifically, the area of ​​the first color filter layer 212 in the first display area 21 can be increased so that the area of ​​the first color filter layer 212 is larger than the area of ​​the second color filter layer 222. As shown in the X direction in the figure, the length of the first color filter layer 212 is greater than the length of the second color filter layer 222 of the same color, ensuring that the first color filter layer 212 can cover the first light-emitting element 211 along the Z direction in the figure. This compensates for the deviation in the relative positional accuracy of the first light-emitting element 211 and its corresponding first color filter layer 212 caused by bending, so that the light S2 emitted by the first light-emitting element 211 along the Z direction in the figure can be filtered by the first color filter layer 212, thereby improving the light output brightness of the first display area 21 and ultimately achieving consistent light output brightness in the first display area 21 and the second display area 22.

[0035] Figure 5 for Figure 2 A partial enlarged schematic diagram of the N3 and N4 regions in FIG. Figure 2 and Figure 5 As shown, optionally, the first color filter layer 212 includes a first color filter point c, the second color filter layer 222 includes a second color filter point d, the first light-emitting element 211 includes a first light-emitting point c1, and the second light-emitting element 221 includes a second light-emitting point d1; along the first direction (as shown in the X direction in the figure), the distance between the first color filter point c and the edge point e of the first color filter layer 212 on the side close to the first display area 22 is L1, and the distance between the second color filter point d and the edge point e1 of the second color filter layer 222 on the side away from the first display area 21 is L2, L1=L2, as shown in the figure. Figure 5 As shown; the first direction is parallel to the direction from the first display area 21 to the first display area 22 (as shown in the X direction in the figure); the relative position relationship between the first light-emitting point c1 and the first light-emitting element 211 is the same as the relative position relationship between the second light-emitting point d1 and the second light-emitting element 221; along the thickness direction of the display panel 200 (as shown in the Z direction in the figure), the second filter point d covers the second light-emitting point d1; the angle between the line between the first filter point c and the curved center o of the first display area 21 and the line between the first light-emitting point c1 and the curved center o of the first display area 21 is θ1, the first filter point d covers the second light-emitting point d1; the angle between the line between the first filter point c and the curved center o of the first display area 21 and the line between the first light-emitting point c1 and the curved center o of the first display area 21 is θ1, The curvature radius of the plane where the first color filter layer 212 is located is R, and the curvature radius of the plane where the first light-emitting element 211 is located is r, 0°<θ1<90°, r<R; the first color filter layer 212 includes a first color filter edge extending along the first direction (such as the first color filter layer 212 area from point e to point a in the figure), and the second color filter layer 222 includes a second color filter edge extending along the first direction (such as the second color filter layer 222 area from point e1 to point b in the figure); along the first direction (as shown in the X direction in the figure), the extension length of the first color filter edge is L3, and the extension length of the second color filter edge is L4; wherein,

[0036] Specific, combined Figure 2 and Figure 5 As shown, the first color filter layer 212 includes a first color filter point c, the second color filter layer 222 includes a second color filter point d, the first light-emitting element 211 includes a first light-emitting point c1, and the second light-emitting element 221 includes a second light-emitting point d1. Figure 5In the example, the first light-emitting point c1 is used as the central light-emitting point of the first light-emitting element 211, and the second light-emitting point d1 is used as the central light-emitting point of the second light-emitting element 221. The first light-emitting element 211 and the second light-emitting element 221 are light-emitting elements of the same color, for example, both are red light-emitting elements. The first filter point c of the first color filter layer 212 and the second filter point d of the second color filter layer 222 are selected as comparison points. The corresponding relationship is such that the distance L1 between the first filter point c and the edge point e of the first color filter layer 212 on the side close to the first display area 22 is equal to the distance L2 between the second filter point d and the edge point e1 of the second color filter layer 222 on the side away from the first display area 21. That is, along the X direction, the relative positional relationship between the first filter point c and the edge point e of the first color filter layer 212 is the same as the relative positional relationship between the second filter point d and the edge point e1 of the second color filter layer 222. The curvature radius r of the plane where the first light emitting element 211 is located is set to be smaller than the curvature radius R of the plane where the first color filter layer 212 is located, so that the first display panel 200 is bent in the negative direction of the Z axis. Figure 2-Figure 4 The W bending direction is shown in FIG. The extension length of the second color filter edge of the first display area 22 that is not bent along the X direction in the figure is L4. Due to the bending of the first display area 21, the relative distance between the first light-emitting element 211 and its corresponding first color filter layer 212 along the X direction in the figure is Therefore, the length L4 of the first color filter edge of the first color filter layer 212 can be increased in the X direction so that the first color filter edge of the first color filter layer 212 is extended by at least the corresponding offset along the X direction in the figure, within the range of and Between, that is, satisfy By increasing the length L4 of the first filter edge of the first color filter layer 212 along the X direction in the figure, the first color filter layer 212 can cover the first light-emitting element 211 along the Z direction in the figure, thereby compensating for the offset in the relative position accuracy of the first light-emitting element 211 and its corresponding first color filter layer 212 caused by bending, ensuring that the light S2 emitted by the first light-emitting element 211 along the Z direction in the figure can be filtered by the first color filter layer 212, thereby improving the light output brightness of the first display area 21, and ultimately ensuring that the light output brightness of the first display area 21 and the first display area 22 are consistent.

[0037] On the basis of the above embodiment, continue to refer to Figure 2 As shown, optionally, the display panel 200 includes multiple first color filter layers 212 of the same color; among any two first color filter layers 212, the area of ​​the first color filter layer 212 close to the first display area 22 is smaller than the area of ​​the first color filter layer 212 away from the first display area 22.

[0038] For details, please refer to Figure 2As shown, for example, the first display area 21 includes a first color filter layer 213 and a first color filter layer 214 of the same color. The first color filter layer 213 is located on a side of the first display area 22, and the first color filter layer 214 is located on a side of the first color filter layer 213 away from the first display area 22, and is curved along a W direction in the figure. Because the curvature of the first color filter layer 214 is greater than the curvature of the first color filter layer 213, the relative position offset between the first color filter layer 214 and its corresponding first light-emitting element 211 is greater than the relative position offset between the first color filter layer 213 and its corresponding first light-emitting element 211. If the first color filter layer 214 is not processed, the light output brightness of the first light-emitting element 211 corresponding to the first color filter layer 214 is lower than the light output brightness of the first light-emitting element 211 corresponding to the first color filter layer 213. Therefore, the light output brightness of the first light-emitting element 211 corresponding to the first color filter layer 214 can be improved by increasing the area of ​​the first color filter layer 214 so that the first color filter layer 214 covers the first light-emitting element 211. Specifically, by gradually increasing the area of ​​the first color filter layer 212 of the same color in the direction away from the first display area 22, the light S2 emitted by the first light-emitting element 211 along the Z direction in the figure can be filtered by the first color filter layer 212, thereby solving the problem of reduced light brightness due to the gradual increase in the relative position offset between the first color filter layer 212 and the corresponding first light-emitting element 211, and ensuring that the light brightness of the first display area 21 is uniform.

[0039] As a feasible implementation method, continue to refer to Figure 3 As shown, the area of ​​the first color filter layer 212 is the same as the area of ​​the second color filter layer 222 .

[0040] Specifically, the relative position of the first color filter layer 212 and the first light-emitting element 211 can be moved without increasing the area of ​​the first color filter layer 212, so as to ensure that the first color filter layer 212 can cover the first light-emitting element 211 along the Z direction in the figure, so as to compensate for the deviation in the relative position accuracy of the first light-emitting element 211 and its corresponding first color filter layer 212 caused by bending, thereby ensuring uniform light output brightness of the first display area 21 and consistent light output brightness of the first display area 21 and the first display area 22.

[0041] Figure 6 for Figure 3 A partial enlarged schematic diagram of the N5 and N6 regions in the middle. Figure 3 and Figure 6As shown, optionally, the first color filter layer 212 includes a third color filter point A, the second color filter layer 222 includes a fourth color filter point B, the first light-emitting element 211 includes a third light-emitting point C, and the second light-emitting element 221 includes a fourth light-emitting point D; the relative position relationship between the third color filter point A and the first color filter layer 212 is the same as the relative position relationship between the fourth color filter point B and the second color filter layer 222; the relative position relationship between the third light-emitting point C and the first light-emitting element 211 and the relative position relationship between the fourth light-emitting point D and the second light-emitting element 221 are the same. The angle between the line connecting the third filter point A and the center o of the bending circle of the first display area 21 and the line connecting the third light-emitting point C and the center o of the bending circle of the first display area 21 is θ2, the curvature radius of the plane where the first filter layer 212 is located is R, and the curvature radius of the plane where the first light-emitting element 211 is located is r, 0°<θ2<90°, r<R; along the thickness direction of the display panel 200, the fourth filter point B covers the fourth light-emitting point D; along the first direction, the distance ΔL between the third filter point A and the third light-emitting point C satisfies:

[0042]

[0043] Specific, combined Figure 3 and Figure 6 As shown, the area of ​​the first color filter layer 212 is set to be the same as the area of ​​the second color filter layer 222. The first color filter layer 212 can be translated along the X direction in the figure according to the offset of the relative position caused by the bending. Figure 6 In this example, the third filter point A of the first color filter layer 212 and the fourth filter point B of the second color filter layer 222 are selected as comparison points, with the third light-emitting point C being the center light-emitting point of the first light-emitting element 211 and the fourth light-emitting point D being the center light-emitting point of the second light-emitting element 221. The relative positional relationship between the third light-emitting point C and the first light-emitting element 211 is the same as the relative positional relationship between the fourth light-emitting point D and the second light-emitting element 221. The relative positional relationship between the third filter point A and the first color filter layer 212 is the same as the relative positional relationship between the fourth filter point B and the second color filter layer 222. For example, the distance along the X direction between the third filter point A and the edge point e of the first color filter layer 212 and the distance between the fourth filter point B and the edge point e1 of the second color filter layer 222 are both L0'. The first light-emitting element 211 and the second light-emitting element 221 are light-emitting elements of the same color, for example, both are red light-emitting elements. The curvature radius r of the plane where the first light emitting element 211 is located is set to be smaller than the curvature radius R of the plane where the first color filter layer 212 is located, so that the first display panel 200 is bent in the negative direction of the Z axis. Figure 6The extension length of the second color filter region along the X direction in the figure and the extension length of the first color filter region along the W bending direction are both L0. Due to the bending of the first display area 21, along the X direction in the figure, the relative distance ΔL between the first light-emitting element 211 and its corresponding first color filter layer 212 is to Therefore, the first color filter layer 212 can be translated at least ΔL along the X direction in the figure by translating the first color filter layer 212 in the positive X direction. Specifically, the first color filter layer 212 can be shifted by increasing the distance between the light-shielding layer 223 between two adjacent first color filter layers 212, that is, by increasing the area of ​​the light-shielding layer 223. By shifting the first color filter layer 212 along the X direction in the figure, it is ensured that the first color filter layer 212 can cover the first light-emitting element 211 along the Z direction in the figure. This can also compensate for the problem of offset in the relative position accuracy of the first light-emitting element 211 and its corresponding first color filter layer 212 due to bending. The light S2 emitted by the first light-emitting element 211 along the Z direction in the figure can all be filtered by the first color filter layer 212, which can ensure uniform brightness of the light emitted from the first display area 21 and ensure consistent brightness of the light emitted from the first display area 21 and the first display area 22.

[0044] Figure 7 for Figure 3 A partially enlarged schematic diagram of first color filter layers of the same color in the display panel. Based on the above embodiment, optionally, the display panel includes multiple first color filter layers of the same color; in any two first color filter layers, the distance in the first direction between the third color filter point and the third light-emitting point in the first color filter layer on the side closer to the first display area is smaller than the distance in the first direction between the third color filter point and the third light-emitting point in the first color filter layer on the side farther from the first display area.

[0045] Specifically, continue to combine Figure 3 and Figure 6-Figure 7 As shown, for example, the first display area 21 includes a first color filter layer 213 and a first color filter layer 214 of the same color. The first color filter layer 213 is close to the side of the first display area 22, and the first color filter layer 214 is located on the side of the first color filter layer 213 away from the first display area 22, and is in a W-bent state in the figure. Figure 7Taking the partially enlarged schematic diagram of the first color filter layer 213 and the first color filter layer 214 in FIG as an example, it is necessary that, since the bending curvature of the first color filter layer 214 is greater than the bending curvature of the first color filter layer 213, that is, θ4>θ3, the offset ΔL2 of the relative position of the first color filter layer 214 and its corresponding first light-emitting element 211 is greater than the offset ΔL1 of the relative position of the first color filter layer 213 and its corresponding first light-emitting element 211. If the first color filter layer 214 is not processed, the brightness of the light emitted by the first color filter layer 214 after filtering is lower than the brightness of the light emitted by the first color filter layer 213 after filtering. Therefore, according to the offset of the relative position, the translation amount of the first color filter layer 214 along the X direction can be set to be greater than the translation amount of the first color filter layer 213 along the X direction, and the following is obtained: Figure 3 As shown, the distance ΔL1 between the third filter point A and the third light-emitting point C in the first color filter layer 213 on the side near the first display area 22 is smaller than the distance ΔL2 between the third filter point A and the third light-emitting point C in the first color filter layer 214 on the side away from the first display area 22. This ensures that the first color filter layer 214 covers the first light-emitting element 211, thereby improving the brightness of the light emitted by the first light-emitting element 211 corresponding to the first color filter layer 214. Specifically, by gradually increasing the X-direction translation of the first color filter layer 212 of the same color away from the first display area 22, all light S2 emitted by the first light-emitting element 211 along the Z direction in the figure can be filtered by the first color filter layer 212. This solves the problem of reduced light brightness due to the gradually increasing relative positional offset between the first color filter layer 212 and its corresponding first light-emitting element 211, thereby ensuring uniform light brightness in the first display area 21.

[0046] On the basis of the above embodiment, continue to refer to Figure 4 As shown, optionally, the thickness d1 of the first color filter layer 212 is smaller than the thickness d2 of the second color filter layer 222 .

[0047] Specifically, the thickness d1 of the first color filter layer 212 can be reduced so that the thickness d1 of the first color filter layer 212 is smaller than the thickness d2 of the second color filter layer 222. While satisfying the function of the first color filter layer 212 as described in the above embodiment, the transmittance of the first color filter layer 212 to light can be further improved, and the luminous brightness of the first light-emitting element 211 can be increased, so as to achieve uniform luminescence of the first display area 21 and the first display area 22, thereby improving the imaging effect of the display panel 200.

[0048] Optionally, you can also Figure 2 The embodiment provides the method of increasing the area of ​​the first color filter layer 212 and Figure 3 The embodiments provided along Figure XOn the basis of directional shifting the first color filter layer 212, the thickness of the first color filter layer 212 is reduced. While ensuring that the first color filter layer 212 covers the first light-emitting element 211 along the Z direction in the figure, the transmittance of the first light-emitting element 211 corresponding to the first color filter layer 212 is further improved, thereby improving the light output brightness of the first light-emitting element 211.

[0049] On the basis of the above embodiment, continue to refer to Figure 4 As shown, optionally, the thickness of the first color filter layer 212 is d1, and the thickness of the second color filter layer 222 is d2, wherein 40% d2≤d1.

[0050] Specifically, the ratio of the thickness d1 of the first color filter layer 212 to the thickness d2 of the second color filter layer 222 can be controlled to satisfy 40% d2≤d1<d2, thereby improving the transmittance and light output brightness of the first light emitting element 211 while satisfying the color filtering of the first light emitting element 211.

[0051] On the basis of the above embodiment, continue to refer to Figure 4 As shown, optionally, the display panel includes multiple first color filter layers 212 of the same color; among any two first color filter layers 212, the thickness of the first color filter layer 212 close to the first display area 22 is greater than the thickness of the first color filter layer 212 away from the first display area 22.

[0052] Specific, combined Figure 4 As shown, the thickness of the first color filter layer 214 of the same color is gradually reduced in the direction away from the first display area 22, based on the rule that the relative position offset between the first color filter layer 214 and the corresponding first light-emitting element 211 of the same color gradually increases, so that the light output brightness of the first light-emitting element 211 of the same color is consistent. For example, the first display area 21 includes a first color filter layer 213 and a first color filter layer 214 of the same color. The first color filter layer 213 is closer to the first display area 22 than the first color filter layer 214, and the curvature of the first color filter layer 214 is greater than the curvature of the first color filter layer 213. The thickness d1 of the first color filter layer 213 is set to be greater than the thickness d3 of the first color filter layer 214 to further increase the transmittance of the first light-emitting element 211 corresponding to the first color filter layer 214, thereby improving the light output brightness of the first display area 21.

[0053] Figure 8 This is a schematic diagram of another display panel structure provided by an embodiment of the present invention. Figure 8As shown, optionally, the first color filter layer 212 includes a first color filter layer 2121, a second color filter layer 2122 and a third color filter layer 2123; the first light-emitting element 211 includes a first color light-emitting element 2111, a second color light-emitting element 2112 and a third color light-emitting element 2113; along the thickness direction of the display panel 200 (as shown in the Z direction in the figure), the first color light-emitting element 2111 and the first color filter layer 2121 at least partially overlap, and the second color light-emitting element 2112 and the second color filter layer 2122 at least partially overlap. There is a small part of overlap, and the third color light-emitting element 2113 and the third color filter layer 2123 at least partially overlap; the brightness attenuation rate of the first color light-emitting element 2111 is E1, the brightness attenuation rate of the second color light-emitting element 2112 is E2, and the brightness attenuation rate of the third color light-emitting element 2113 is E3; the thickness of the first color filter layer 2121 is d11, the thickness of the second color filter layer 2122 is d12, and the thickness of the third color filter layer 2123 is d13; E1>E2>E3, d11<d12<d13 are satisfied.

[0054] Specifically, such as Figure 8As shown, the first light-emitting element 211 includes a first color light-emitting element 2111, a second color light-emitting element 2112, and a third color light-emitting element 2113, such as a blue light-emitting element, a red light-emitting element, and a green light-emitting element. The first color filter layer 212 includes a first color filter layer 2121, a second color filter layer 2122, and a third color filter layer 2123, such as a blue filter layer, a red filter layer, and a green filter layer. Along the Z direction in the figure, by arranging the overlapping areas of each color filter layer and its corresponding light-emitting element, the first color filter layer 2121 filters and purifies the light emitted by the first color light-emitting element 2111, the second color filter layer 2122 filters and purifies the light emitted by the second color light-emitting element 2112, and the third color filter layer 2123 filters and purifies the light emitted by the third color light-emitting element 2113. Due to the different luminescent materials of the light-emitting elements, the energy of light emitted by one color of light-emitting element decays relatively quickly. For example, the energy decay rate of light emitted by a blue light-emitting element is greater than that of the red and green light-emitting elements. For example, the brightness decay rate E1 of the first color light-emitting element 2111 is greater than the brightness decay rate E2 of the second color light-emitting element 2112, and the brightness decay rate E3 of the third color light-emitting element 2113. By rationally reducing the thickness of the first color filter layer 2121 so that the thickness d11 of the first color filter layer 2121 is less than the thickness d12 of the second color filter layer 2122, and the thickness d13 of the third color filter layer 2123, the transmittance of the first color filter layer 2121 for light emitted by the first color light-emitting element 2111 can be increased, ensuring that the first color light-emitting element 2111, the second color light-emitting element 2112, and the third color light-emitting element 2113 emit the same brightness, thereby achieving a uniform brightness display effect in the first display area 21.

[0055] Figure 9 A schematic structural diagram of another display panel provided by an embodiment of the present invention; Figure 10 FIG1 is a schematic diagram of another display panel structure provided by an embodiment of the present invention. Figure 9 and Figure 10 Based on the above embodiment, optionally, the first color filter layer 212 includes a first surface P1 close to the substrate 201, a second surface P2 away from the substrate, and a side surface connecting the first surface and the second surface P2, and the side surface includes a first side surface P3 located on the side of the first color filter body 2121 away from the first display area 22; the angle ε between the first side surface P3 and the thickness direction of the display panel 200 is an acute angle.

[0056] Specifically, such as Figure 9 and Figure 10As shown, the first surface P1 of the first color filter layer 212 close to the substrate 201 and the second surface P2 away from the substrate 201 can be parallel planes, and there are at least four side surfaces connected to the first surface and the second surface P2. Since the first light-emitting element 211 is bent, after filtering by its corresponding first color filter layer 212, the light emitting efficiency of the outgoing light of the first light-emitting element 211 away from the first display area 22 is low, and the angle ε between the first side surface P3 of the first color filter body 2121 away from the first display area 22 and the Z direction in the figure is an acute angle, and the first side surface P3 is an inclined surface. Along the X direction in the figure, the length of the first surface P1 is not equal to the length of the second plane P2. Optionally, the area of ​​the first surface P1 is larger than the area of ​​the second surface P2 (such as Figure 9 Alternatively, the area of ​​the second surface P2 is greater than the area of ​​the first surface P1 (as shown in FIG. Figure 10 Along the Z direction in the figure, the thickness of the first side surface P3 region is less than the thickness of the first surface P1 region (not shown in the figure), or the thickness of the first side surface P3 region is less than the thickness of the second surface P2 region (not shown in the figure). By reducing the thickness of the first side surface P3 region of the first color filter layer 212, the transmittance of light in the first side surface P3 region can be improved, ensuring consistent brightness of light emitted by the corresponding first light-emitting elements, ensuring uniform light emission in the first display area 21, and ultimately ensuring the same display effect in the first display area 21 and the first display area 22 of the display panel 200100.

[0057] Based on the same inventive concept, an embodiment of the present invention further provides a display device. Figure 11 A schematic structural diagram of a display device provided by an embodiment of the present invention is shown in FIG. Figure 11 As shown, the display device includes the display panel 200 described in any embodiment of the present invention. Therefore, the display device provided by the embodiment of the present invention has the corresponding beneficial effects of the display panel 200 provided by the embodiment of the present invention, which will not be described in detail here. Exemplarily, the display device can be an electronic device such as a mobile phone, a computer, a smart wearable device (for example, a smart watch), and an in-vehicle display device, which is not limited in the embodiment of the present invention.

[0058] Note that the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, combinations, and substitutions are possible for those skilled in the art without departing from the scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A display panel, characterized in that: It includes a first display area and a second display area, wherein the curvature of the light-emitting surface of the first display area is greater than the curvature of the second display area. The first display area includes a plurality of first light-emitting elements and a first color filter layer located on a light-emitting side of the first light-emitting elements; the first color filter layer includes a first color filter body and a first edge point located on an edge of the first color filter body, the first edge point being located on a side of the first color filter body away from the second display area and on a side of the first light-emitting element away from the substrate; an angle α1 is formed between a line connecting the first edge point and the center of the first light-emitting element and a thickness direction of the display panel; The second display area includes a plurality of second light-emitting elements and a second color filter layer located on a light-emitting side of the second light-emitting elements, the color of the second color filter layer being the same as the color of the first color filter layer; the second color filter layer includes a second color filter body and a second edge point located on an edge of the second color filter body, the second edge point being located on a side of the second color filter body away from the first display area and on a side of the second light-emitting element away from the substrate; an angle α2 is formed between a line connecting the second edge point and a center of the second light-emitting element and a thickness direction of the display panel, where α1>α2; The first color filter layer includes a first surface close to the substrate, a second surface away from the substrate, and a side surface connecting the first surface and the second surface, wherein the side surface includes a first side surface located on a side of the first color filter body away from the second display area; An angle between the first side surface and the thickness direction of the display panel is an acute angle.

2. The display panel according to claim 1, wherein: Along the thickness direction of the display panel, the first color filter layer covers the first light emitting element.

3. The display panel according to claim 1, wherein: The area of ​​the first color filter layer is larger than that of the second color filter layer.

4. The display panel according to claim 3, wherein: The first color filter layer includes first color filter dots, the second color filter layer includes second color filter dots, the first light-emitting element includes first light-emitting dots, and the second light-emitting element includes second light-emitting dots; Along a first direction, a distance between the first filter dot and an edge point of the first color filter layer on a side close to the second display area is L1, and a distance between the second filter dot and an edge point of the second color filter layer on a side away from the first display area is L2, where L1=L2; the first direction is parallel to a direction from the first display area to the second display area; The relative positional relationship between the first light-emitting point and the first light-emitting element is the same as the relative positional relationship between the second light-emitting point and the second light-emitting element; Along the thickness direction of the display panel, the second filter dots cover the second light-emitting dots; The angle between the line connecting the first color filter point and the center of the curved circle of the first display area and the line connecting the first light-emitting point and the center of the curved circle of the first display area is θ1, the curvature radius of the plane where the first color filter layer is located is R, and the curvature radius of the plane where the first light-emitting element is located is r, 0°<θ1<90°, r<R; The first color filter layer includes a first color filter edge extending along the first direction, and the second color filter layer includes a second color filter edge extending along the first direction; Along the first direction, the extension length of the first color filter edge is L3, and the extension length of the second color filter edge is L4; in 5. The display panel according to claim 3, wherein: The display panel includes a plurality of first color filter layers of the same color; In any two of the first color filter layers, the area of ​​the first color filter layer on the side close to the second display area is smaller than the area of ​​the first color filter layer on the side away from the second display area.

6. The display panel according to claim 2, wherein: The area of ​​the first color filter layer is the same as the area of ​​the second color filter layer.

7. The display panel according to claim 6, wherein: The first color filter layer includes a third color filter dot, the second color filter layer includes a fourth color filter dot, the first light-emitting element includes a third light-emitting dot, and the second light-emitting element includes a fourth light-emitting dot; The relative position relationship between the third filter dots and the first filter layer is the same as the relative position relationship between the fourth filter dots and the second filter layer; The relative positional relationship between the third light-emitting point and the first light-emitting element is the same as the relative positional relationship between the fourth light-emitting point and the second light-emitting element; The angle between the line connecting the third color filter point and the curved center of the first display area and the line connecting the third light-emitting point and the curved center of the first display area is θ2, the curvature radius of the plane where the first color filter layer is located is R, and the curvature radius of the plane where the first light-emitting element is located is r, 0°<θ2<90°, r<R; Along the thickness direction of the display panel, the fourth filter dot covers the fourth luminous point; along the first direction, the distance ΔL between the third filter dot and the third luminous point satisfies: The first direction is parallel to the direction from the first display area to the second display area.

8. The display panel according to claim 7, wherein: The display panel includes a plurality of first color filter layers of the same color; In any two of the first color filter layers, the distance between the third color filter point and the third light-emitting point in the first color filter layer close to the second display area is smaller than the distance between the third color filter point and the third light-emitting point in the first direction in the first color filter layer away from the second display area.

9. The display panel according to claim 1, wherein: The thickness of the first color filter layer is smaller than that of the second color filter layer.

10. The display panel according to claim 9, wherein: The thickness of the first color filter layer is d1, the thickness of the second color filter layer is d2, Among them, 40% d2≤d1.

11. The display panel according to claim 9, wherein The display panel includes a plurality of first color filter layers of the same color; In any two of the first color filter layers, the thickness of the first color filter layer on the side close to the first display area is greater than the thickness of the first color filter layer on the side away from the first display area.

12. The display panel according to claim 9, wherein: The first color filter layer includes a first color filter layer, a second color filter layer and a third color filter layer; the first light-emitting element includes a first color light-emitting element, a second color light-emitting element and a third color light-emitting element; Along the thickness direction of the display panel, the first color light-emitting element at least partially overlaps with the first color filter layer, the second color light-emitting element at least partially overlaps with the second color filter layer, and the third color light-emitting element at least partially overlaps with the third color filter layer; the brightness attenuation rate of the first color light-emitting element is E1, the brightness attenuation rate of the second color light-emitting element is E2, and the brightness attenuation rate of the third color light-emitting element is E3; the thickness of the first color filter layer is d11, the thickness of the second color filter layer is d12, and the thickness of the third color filter layer is d13; It satisfies that E1>E2>E3, d11<d12<d13.

13. The display panel according to claim 1, wherein The area of ​​the first surface is greater than that of the second surface, or the area of ​​the second surface is greater than that of the first surface.

14. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 13.

Images