Curved display panel and display device

Abstract

The application provides a curved display panel and a display device. The curved display panel comprises a substrate, a driving circuit layer, a flat layer, a pixel definition layer, a light-emitting layer and an encapsulation layer which are sequentially stacked. The pixel definition layer is provided with a plurality of pixel openings on the side away from the flat layer, and the pixel openings are provided with pixel units, and the light-emitting layer comprises a plurality of pixel units. The bending direction of the curved display area away from the flat display area is defined as the folding direction of the curved display area, the curved display area comprises three first pixel units which are arranged adjacent to each other in the folding direction, the intervals between the adjacent first pixel units in the folding direction are sequentially defined as a first interval and a second interval in the folding direction, and the first interval is smaller than the second interval. The curved display panel provided by the application can improve the display color deviation problem in the curved display area under the viewing angle of the orthoview flat display area.

Description

Technical Field

[0001] The present application relates to the field of display, and in particular to a curved display panel and a display device. Background Art

[0002] As users' demands for a better visual experience continue to rise, narrow bezels are becoming a key goal for mobile phones, tablets, and other display devices. Curved display panels, as a way to achieve narrow bezels, are increasingly being adopted in various display devices.

[0003] However, due to the limitations of the curved structure itself, if the arrangement spacing of adjacent pixel units in the curved display panel in the bending direction remains unchanged, the actual arrangement spacing of adjacent pixel units in the curved display area will change when looking directly at the flat display area of ​​the curved display panel. This will cause inconsistent pixel density in the curved display area at this viewing angle, resulting in display color deviation problems and affecting the user's visual experience. Summary of the Invention

[0004] Embodiments of the present application provide a curved display panel and a display device, which can improve the display color shift problem in the curved display area when looking directly at the flat display area.

[0005] An embodiment of the present application provides a curved display panel, comprising:

[0006] A substrate, a driving circuit layer, a planar layer, a pixel definition layer, a light-emitting layer, and an encapsulation layer are stacked in sequence;

[0007] The pixel definition layer is provided with a plurality of pixel openings on a side away from the planar layer, pixel units are provided in the pixel openings, and the light emitting layer includes a plurality of the pixel units;

[0008] The curved display panel includes adjacent curved display areas and flat display areas, and the bending direction of the curved display area away from the flat display area is defined as the bending direction of the curved display area. The curved display area includes three first pixel units arranged adjacent to each other in the bending direction, and the spacing between adjacent first pixel units in the bending direction is defined in sequence as a first spacing and a second spacing, and the first spacing is smaller than the second spacing.

[0009] Optionally, in some embodiments of the present application, in the bending direction, the distance between adjacent first pixel units in the bending direction gradually increases.

[0010] Optionally, in some embodiments of the present application, the projection direction of the bending direction on the plane where the planar display area is located is a first direction, the second direction is perpendicular to the first direction within the plane where the planar display area is located, and multiple first pixel units are arranged in the second direction, and the spacing between adjacent first pixel units in the second direction remains unchanged.

[0011] Optionally, in some embodiments of the present application, in the planar display area, a plurality of second pixel units are arranged in the first direction, and a spacing between adjacent first pixel units in the bending direction is greater than a spacing between adjacent second pixel units in the first direction.

[0012] Optionally, in some embodiments of the present application, a spacing between adjacent first pixel units in the first direction is equal to a spacing between adjacent second pixel units in the first direction.

[0013] Optionally, in some embodiments of the present application, a plurality of second pixel units are arranged in the second direction, and a spacing between adjacent first pixel units in the second direction is equal to a spacing between adjacent second pixel units in the second direction.

[0014] Optionally, in some embodiments of the present application, in the bending direction, an elliptical through hole is provided between adjacent first pixel units, the short axis of the elliptical through hole is in the bending direction, and the elliptical through hole is provided in at least one layer of the flat layer and the pixel definition layer.

[0015] Optionally, in some embodiments of the present application, the short axis length of the elliptical through hole is less than or equal to the difference between the spacing between adjacent first pixel units in the bending direction and the spacing between adjacent second pixel units in the first direction, and the long axis length of the elliptical through hole is greater than 5 microns.

[0016] Optionally, in some embodiments of the present application, the planar display area includes a first edge, a second edge adjacent to the first edge, a third edge opposite to the first edge, and a fourth edge opposite to the second edge;

[0017] The curved display area includes four first curved display areas and four second curved display areas. The first edge, the second edge, the third edge and the fourth edge are each connected to one of the first curved display areas, and a second curved display area is connected between adjacent first curved display areas.

[0018] Correspondingly, an embodiment of the present application further provides a display device, comprising the curved display panel described in the above embodiment.

[0019] The curved display panel and display device provided in the embodiments of the present application have a curved display area including three first pixel units adjacently arranged in the bending direction, wherein the spacing between adjacent first pixel units in the bending direction is defined in sequence as a first spacing and a second spacing. Since the first spacing is smaller than the second spacing, the difference in the arrangement spacing of adjacent pixel units in the curved display area under the viewing angle of the front-view plane display area is reduced, thereby improving the display color deviation problem in the curved display area under the viewing angle of the front-view plane display area and enhancing the visual effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 2 is a schematic structural diagram of a curved display panel provided in one embodiment of the present application.

[0021] Figure 2 yes Figure 1 The diagram shows a curved display panel in a flattened state.

[0022] Figure 3 2 is a schematic structural diagram of a curved display panel provided in another embodiment of the present application.

[0023] Figure 4 yes Figure 3 The diagram shows a curved display panel in a flattened state.

[0024] Figure 5 yes Figure 4 The diagram shows a partial enlarged schematic diagram of point A of the curved display panel in a flattened state.

[0025] Figure 6 FIG. 1 is a top view of a curved display panel provided in accordance with an embodiment of the present application. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of this application. In addition, it should be understood that the specific embodiments described herein are only used to illustrate and explain the present application and are not used to limit the present application.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0028] The embodiments of the present application provide a curved display panel and a display device. These are described in detail below. It should be noted that the order in which the following embodiments are described does not limit the preferred order of the embodiments.

[0029] See also Figure 1 , the curved display panel 100 provided in one embodiment of the present application includes a substrate 10, a driving circuit layer 20, a flat layer 30, a pixel definition layer 40, and a light-emitting layer 50 which are stacked in sequence. The pixel definition layer 40 is provided with a plurality of pixel openings 41 on the side away from the flat layer 30, and a pixel unit UT is provided in the pixel opening 41, and the light-emitting layer 50 includes a plurality of pixel units UT. It can be understood that, although not shown in the figure, the curved display panel 100 may also include an encapsulation layer provided on the side of the pixel definition layer 40 and the light-emitting layer 50 away from the flat layer 30. It should be noted that the pixel unit referred to in this application is composed of a plurality of pixels of different colors from each other, such as a pixel unit composed of a red pixel, a green pixel, and a blue pixel. The specific shape of the pixel unit in the display plane can be selected according to actual needs, and this application does not impose any restrictions on this.

[0030] The curved display panel 100 includes an adjacent curved display area WA and a flat display area PA. The bending direction of the curved display area WA away from the flat display area PA is defined as the bending direction of the curved display area WA. The curved display area WA includes three first pixel units UT1 adjacently arranged in the bending direction, and the spacing between adjacent first pixel units UT1 in the bending direction is defined in sequence as a first spacing L1 and a second spacing L2, and the first spacing L1 is smaller than the second spacing L2. It should be noted that since the first spacing L1 is smaller than the second spacing L2, the difference in the arrangement spacing of adjacent pixel units in the curved display area when viewed from the front plane display area is reduced, thereby improving the display color deviation problem in the curved display area when viewed from the front plane display area.

[0031] In some other embodiments of the present application, the spacing between adjacent first pixel units UT1 in the bending direction gradually increases. It is understandable that, because the spacing between adjacent first pixel units UT1 in the curved display area WA gradually increases in the bending direction, the difference in the spacing between adjacent pixel units in the curved display area WA when viewed from the plane display area PA is reduced, thereby improving the color shift problem of the display in the curved display area WA when viewed from the plane display area PA, and enhancing the visual effect.

[0032] Please continue reading Figure 1 Within the planar display area PA, a plurality of second pixel units UT2 are arranged in the first direction X. The spacing between adjacent second pixel units UT2 in the first direction X is L3, and the spacing between adjacent first pixel units UT1 in the bending direction is greater than L3. With this arrangement, when viewed from the front of the planar display area PA, the difference in the spacing between adjacent pixel units in the curved display area WA and the planar display area PA is reduced, thereby improving the color shift problem between the curved display area WA and the planar display area PA when viewed from the front of the planar display area PA.

[0033] Optionally, the spacing between adjacent first pixel units UT1 in the bending direction can be adjusted so that the spacing L4 between adjacent first pixel units UT1 in the first direction X and the spacing L3 between adjacent second pixel units UT2 in the first direction X are equal. It can be understood that in this case, when viewed from the front view of the planar display area PA, the arrangement spacing between adjacent pixel units in the curved display area WA and the planar display area PA is consistent, further improving the display color shift problem between the curved display area WA and the planar display area PA when viewed from the front view of the planar display area PA.

[0034] See also Figure 2 ,exist Figure 1 In the flattened state of the curved display panel shown, the projection direction of the curved display area WA onto the plane where the flat display area PA resides is the first direction X. The second direction Y is perpendicular to the first direction X within the plane where the flat display area PA resides. Within the curved display area WA, multiple first pixel units UT1 are also arranged in the second direction Y, and the spacing D1 between adjacent first pixel units UT1 in the second direction Y remains unchanged. This arrangement ensures that the arrangement density of the first pixel units UT1 is nearly uniform when viewed directly from the flat display area PA, thereby significantly reducing the difference in color effects displayed within the curved display area WA when viewed directly from the flat display area PA.

[0035] Please continue reading Figure 2In the planar display area PA, a plurality of second pixel units UT2 are arranged in the second direction Y, and a spacing D1 between adjacent first pixel units UT1 and a spacing D2 between adjacent second pixel units UT2 in the second direction Y are equal. It can be understood that, when viewed from the front of the planar display area PA, the pixel arrangement density in the curved display area WA and the planar display area PA is nearly identical, thereby significantly reducing the difference in color effects displayed between the curved display area WA and the planar display area PA when viewed from the front of the planar display area PA.

[0036] See also Figures 3 to 5 In another embodiment of the present application, a curved display panel 100 is provided with an elliptical through-hole H between adjacent first pixel units UT1 in the bending direction of the curved display area WA. The minor axis M of the elliptical through-hole H is in the bending direction of the curved display area WA. Because the curved display area WA may produce wrinkles due to the bending of the curved surface, affecting the normal display of the curved display area WA, especially when the curved display area WA is located in a rounded corner area, the through-hole is provided between adjacent first pixel units UT1 in the curved display area WA to relieve the stress generated by the bending of the curved display area WA, thereby reducing the wrinkles in the curved display area WA. Furthermore, the through-hole is elliptical and its minor axis is arranged in the bending direction of the curved display area WA. This configuration reduces the opening area, thereby reducing the adverse effects of the through-hole in the curved display area WA on the various film layers of the display panel.

[0037] In this embodiment, the elliptical through hole H is provided in the pixel definition layer 40. In some other embodiments of the present application, the elliptical through hole H may also be provided in the planar layer 30, or in the planar layer 30 and the pixel definition layer 40. In other words, the elliptical through hole H may be provided in at least one of the planar layer 30 and the pixel definition layer 40. It should be noted that, since the inorganic film layer has poor performance in releasing bending stress, providing the elliptical through hole H in the inorganic film layer may increase the possibility of cracks in the inorganic film layer when the surface is bent. Therefore, providing the elliptical through hole H in an organic film layer such as the planar layer 30 and / or the pixel definition layer 40 can reduce wrinkles in the curved display area WA caused by curved surface bending, while reducing the risk of cracks in the inorganic film layer when the surface is bent.

[0038] Specifically, the length of the minor axis M of the elliptical through hole H can be less than or equal to the difference between the spacing between adjacent first pixel units UT1 in the bending direction of the curved display area WA and the spacing L3 between adjacent second pixel units UT2 in the first direction X. The length of the major axis N of the elliptical through hole H can be greater than 5 microns. This arrangement not only satisfies the requirement of relieving bending stress in the curved display area WA and reducing the generation of wrinkles, but also has little effect on the arrangement spacing between adjacent first pixel units UT1 in the curved display area WA when viewed from the front plane display area PA, thereby ensuring the display effect of the curved display panel 100 when viewed from the front plane display area PA.

[0039] See also Figure 6 , Figure 6 This is a top view of a curved display panel 100 provided in one embodiment of the present application. The planar display area PA includes a first edge ED1, a second edge ED2 adjacent to the first edge ED1, a third edge ED3 opposite the first edge ED1, and a fourth edge ED4 opposite the second edge ED2. The curved display area WA includes four first curved display areas WA1 and four second curved display areas WA2. Each of the first edge ED1, second edge ED2, third edge ED3, and fourth edge ED4 is connected to a first curved display area WA1. A second curved display area WA2 is connected between adjacent first curved display areas WA1.

[0040] It is understood that the curved display panel 100 provided in the above embodiment can be applied to various display devices to enhance their visual effects, including but not limited to smart watches, mobile phones, tablet computers, and laptop computers.

[0041] The above is a detailed introduction to a curved display panel and a display device provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for those skilled in the art, based on the ideas of the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A curved display panel, characterized in that: include: A substrate, a driving circuit layer, a planar layer, a pixel definition layer, a light-emitting layer, and an encapsulation layer are stacked in sequence; The pixel definition layer is provided with a plurality of pixel openings on a side away from the planar layer, pixel units are provided in the pixel openings, and the light emitting layer includes a plurality of the pixel units; The curved display panel includes an adjacent curved display area and a flat display area, wherein a bending direction of the curved display area away from the flat display area is defined as a bending direction of the curved display area, the curved display area includes three first pixel units adjacently arranged in the bending direction, and spacings between adjacent first pixel units in the bending direction are sequentially defined as a first spacing and a second spacing, wherein the first spacing is smaller than the second spacing; The planar display area includes a plurality of second pixel units arranged in a first direction, wherein a spacing between adjacent first pixel units in the bending direction is greater than a spacing between adjacent second pixel units in the first direction, wherein the first direction is a projection direction of the bending direction on the plane where the planar display area is located; In the bending direction, an elliptical through hole is provided between adjacent first pixel units, the short axis of the elliptical through hole is in the bending direction, and the elliptical through hole is provided in at least one of the planar layer and the pixel definition layer; The short axis length of the elliptical through hole is less than or equal to the difference between the spacing between adjacent first pixel units in the bending direction and the spacing between adjacent second pixel units in the first direction, and the long axis length of the elliptical through hole is greater than 5 microns.

2. The curved display panel according to claim 1, wherein: In the bending direction, the distance between adjacent first pixel units gradually increases.

3. The curved display panel according to claim 2, wherein: A direction perpendicular to the first direction in the plane where the planar display area is located is defined as a second direction. A plurality of first pixel units are arranged in the second direction, and a distance between adjacent first pixel units in the second direction remains unchanged.

4. The curved display panel according to claim 3, wherein: The distance between adjacent first pixel units in the first direction is equal to the distance between adjacent second pixel units in the first direction.

5. The curved display panel according to claim 4, wherein: A plurality of second pixel units are arranged in a second direction, and a distance between adjacent first pixel units in the second direction is equal to a distance between adjacent second pixel units in the second direction.

6. The curved display panel according to claim 5, wherein: The planar display area includes a first edge, a second edge adjacent to the first edge, a third edge opposite to the first edge, and a fourth edge opposite to the second edge; The curved display area includes four first curved display areas and four second curved display areas. The first edge, the second edge, the third edge and the fourth edge are each connected to one of the first curved display areas, and a second curved display area is connected between adjacent first curved display areas.

7. A display device, characterized in that: The device comprises a curved display panel as claimed in any one of claims 1 to 6.

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