Display panel and display device

Abstract

Embodiments of the present application provide a display panel and a display device. The display panel comprises a corner bending area, the corner bending area comprises a driving layer and a light-emitting pixel, wherein the light-emitting pixel is arranged on the driving layer, the light-emitting pixel comprises a plurality of pixel groups, adjacent pixel groups are arranged at intervals, and a plurality of opening structures are arranged on the driving layer corresponding to the interval area between the pixel groups. By arranging the light-emitting pixels at intervals and arranging the opening structures on the driving layer, the display effect of the display panel in the corner bending area is improved, and the quality of the display panel is improved.

Description

Technical Field

[0001] This invention relates to the field of display panel design and manufacturing technology, and specifically to a display panel and display device. Background Technology

[0002] With the development of flexible display technology, people have put forward higher requirements for the quality and performance of display panels and devices.

[0003] Organic light-emitting diodes (OLEDs) are widely used in numerous fields due to their advantages over traditional liquid crystal displays (LCDs), including lighter weight, wider viewing angles, and higher luminous efficiency. To enhance the market competitiveness of LCD panels, major LCD manufacturers have joined the development of flexible LCD panels. In particular, to improve the full-screen display technology, the edges of the display panel, especially the four corners, are typically optimized during fabrication, such as by creating curved or fan-shaped structures. However, currently available full-screen four-curved devices generally use Gaussian surfaces at the corners, exhibiting irregular curvature. This leads to a deterioration in the overall visual appeal of the display panel. Furthermore, the complex deformation of the Gaussian surface at the corners can easily affect the pixel structure in that area, further reducing the display quality and hindering the improvement of the panel's overall performance.

[0004] In summary, in the existing technology, when fabricating a full-screen curved display panel, the pixel structure in the four corner areas of the panel is prone to deformation, and the display effect in the four corner areas is poor, which is not conducive to improving the overall performance of the panel. Summary of the Invention

[0005] This invention provides a display panel and a display device to effectively improve the problem of unsatisfactory display effect in the four corner areas of the display panel.

[0006] To solve the above-mentioned technical problems, the technical methods provided by the embodiments of the present invention are as follows:

[0007] A first aspect of the present invention provides a display panel including a display area, the display area including a corner bending area, the corner bending area being located at the edge corner of the display area, the corner bending area including:

[0008] The driver layer; and,

[0009] The light-emitting pixel is disposed on the driving layer. The light-emitting pixel includes multiple pixel groups, and adjacent pixel groups are spaced apart.

[0010] According to one embodiment of the present invention, the display panel further includes openings, the openings being disposed on the driving layer corresponding to the spacing region between the pixel groups, and the plurality of openings being disposed in at least one row on the driving layer.

[0011] According to one embodiment of the present invention, the corner bending area is set to be arc-shaped, the boundary of the arc coincides with the boundary of the display area, and the arrangement direction of the opening is consistent with the radial direction of the arc.

[0012] According to one embodiment of the present invention, the diameter of the opening near the center of the arc is larger than the diameter of the opening away from the center of the arc.

[0013] According to one embodiment of the present invention, the opening depth of the opening near the center of the arc is greater than the opening depth of the opening away from the center of the arc.

[0014] According to one embodiment of the present invention, a plurality of pixel groups are arranged in an arc shape in the corner bending region, and the arrangement direction of the spacing between adjacent pixel groups is the same as the radial direction in the radial direction of the corner bending region.

[0015] According to one embodiment of the present invention, the widths of the intervals are different in the same radial direction.

[0016] According to one embodiment of the present invention, the corner bending area is set to be arc-shaped, and the light-emitting pixels are arranged along the radial direction of the arc.

[0017] According to one embodiment of the present invention, the display panel further includes an insulating layer and an encapsulation layer, wherein the insulating layer is disposed on the light-emitting pixels and the encapsulation layer is disposed on the insulating layer.

[0018] According to a second aspect of the present invention, a display device is also provided, the display device including a display panel, the display panel including a display area, the display area including a corner bending area, the corner bending area being located at an edge corner of the display panel, the corner bending area including:

[0019] Driver layer;

[0020] A light-emitting pixel is disposed on the driving layer. The light-emitting pixel includes multiple pixel groups, with adjacent pixel groups spaced apart. The driving layer has multiple openings corresponding to the spacing between the pixel groups.

[0021] An encapsulation layer is disposed on the light-emitting pixel.

[0022] In summary, the beneficial effects of the embodiments of the present invention are as follows:

[0023] This invention provides a display panel and a display device. The display panel includes a corner bending region, which includes a driving layer and light-emitting pixels. The light-emitting pixels are disposed on the driving layer and include multiple pixel groups. Adjacent pixel groups are spaced apart, and the driving layer corresponding to the space between pixel groups has multiple opening structures. By spaced the light-emitting pixels and providing opening structures on the driving layer, when the display panel bends or folds in the corner bending region, the spacing and opening structures can effectively reduce the internal stress of the panel, thereby improving the display effect of the display panel in the corner bending region and improving the quality of the display panel. Attached Figure Description

[0024] The technical solution and other beneficial effects of the present invention will become more apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0025] Figure 1 This is a schematic diagram of the planar structure of the display panel provided in the embodiments of this application;

[0026] Figure 2 This is a schematic diagram of the film layer structure of the display panel provided in the embodiments of this application;

[0027] Figure 3 A schematic diagram of the pixel arrangement at the corner bending area provided in an embodiment of this application;

[0028] Figure 4 This is another schematic diagram of the display panel structure provided in the embodiments of this application;

[0029] Figures 5-8 This is a schematic diagram of the film structure corresponding to the display panel fabrication process provided in the embodiments of this application. Detailed Implementation

[0030] The following description, in conjunction with the accompanying drawings of the embodiments of the present invention, provides different implementation methods or examples to realize different structures of the present invention. To simplify the present invention, the components and arrangements of specific examples are described below. Furthermore, the various specific processes and materials provided in the present invention are examples that those skilled in the art will recognize for the application of other processes. All other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present invention.

[0031] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. 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 technical features indicated.

[0032] With the continuous development of display panel manufacturing technology, people have placed higher demands on the performance and quality of display panels. The desired outcome is not only high-quality display panels but also superior overall performance. In existing full-screen display panels, the edges, especially the four corners, are often irregularly shaped. The internal environment of the various film layers within these irregular structures is complex. For example, bending in these areas can reduce display quality and cause significant internal stress, hindering further improvements in the overall performance of the display panel.

[0033] This application provides a display panel and a display device to effectively improve the structure of the four corner bending areas of the display panel and enhance its display effect.

[0034] like Figure 1 As shown, Figure 1 This is a schematic diagram of the planar structure of the display panel provided in this embodiment. Specifically, the display panel 100 may include a display area 12. When designing the display panel 100, to ensure a smooth feel, the non-straight parts of its outer contour are often set to arcs. For example, the four corners of the display panel 100 are designed with arcs or semicircles. Figure 1 As shown in the structure, the display area 12 includes a flat display area 120 and a corner bending area 121. The corner bending area 121 is located at the edge corner of the display panel 100, and preferably, the corner bending area 121 corresponds to the four corners of the display panel 100.

[0035] In this embodiment, when setting the corner bending areas 121 corresponding to the four corners, each corner bending area 121 can be set to the same shape, or the two corner bending areas 121 corresponding to the upper part of the display panel can be set to the same type, such as setting their shape and size to be the same, and setting the two corner bending areas 121 at the lower part of the display panel 100 to another type of the same. Preferably, in the following embodiments, when describing the corner bending areas 121, the structure within all corner bending areas 121 is set to be the same.

[0036] Specifically, such as Figure 2 As shown, Figure 2 This is a schematic diagram of the film layer structure of the display panel provided in this embodiment. The display panel 100 also includes a buffer layer 101, a driving layer 102, and light-emitting pixels 111. The driving layer 102 is disposed on the buffer layer 101, and the light-emitting pixels 111 are disposed on the driving layer 102. In this embodiment, both the buffer layer 101 and the driving layer 102 can be flexible layers. For example, the buffer layer 101 can be a flexible polyimide film layer, and the driving layer 102 can also be a flexible film layer. Various driving lines and other devices are correspondingly disposed within the driving layer 102. Furthermore, in this embodiment, the surface of the driving layer 102 can also be configured as a flexible substrate structure for subsequent processing of the driving layer 102. In this embodiment, by making the driving layer 102 a flexible film layer, the corner bending area 121 is more prone to bending during the fabrication of the display panel, thereby reducing the bending stress inside the film layer after bending and improving the reliability of the display panel.

[0037] Furthermore, the light-emitting pixels 111 are disposed on the driving layer 102. Due to the significant deformation within the corner bending region 121, in this embodiment, when setting the light-emitting pixels 111, the light-emitting pixels 111 include multiple pixel groups within the region corresponding to the corner bending region 121. Adjacent pixel groups are spaced apart, meaning they are not connected and have a certain gap distance. In this embodiment, the pixel group is illustrated using the first pixel group 109 and the second pixel group 110 as examples. Preferably, other numbers of light-emitting pixels and corresponding pixel groups can also be set within the corner bending region 121, with the same arrangement as the structure in this application, which will not be described in detail here.

[0038] In this embodiment, the pixel group can be arranged in an arc-shaped array on the driving layer, and the geometric center of the arc-shaped array is on the same side as the geometric center of the bend boundary contour line of the corner bending area of ​​the display panel. Specifically, as shown... Figure 3 As shown, Figure 3 This is a schematic diagram of the pixel arrangement at the corner bend area provided in an embodiment of this application. (Combined with...) Figure 2 The diagram in Figure 3 Each light-emitting pixel 111 is arranged in multiple rows within the corner bending area 121, and the light-emitting pixels 111 in different rows form an arc-shaped array.

[0039] In this embodiment, adjacent pixel groups are spaced apart. Preferably, a space 106 is provided between the first pixel group 109 and the second pixel group 110. Furthermore, an opening 107 or a groove of a certain depth is provided on the driving layer 102 corresponding to the space 106. Preferably, this embodiment uses the opening 107 structure as an example for explanation. When the opening is changed to a groove, its design and structure are the same as in this application; therefore, the design scheme of the groove will not be described in detail here. Multiple openings 107 can also be provided.

[0040] When setting each opening 107, the opening 107 can be set as a blind hole, that is, a blind hole formed by etching only a portion of the driving layer 102, or the opening 107 can be set as a through hole structure. When the display panel is bent in the corner bending area, the opening 107 can effectively reduce the stress problem generated on the panel film layer during the bending process, thereby improving the overall performance of the display panel.

[0041] See details Figure 3 When the light-emitting pixels 111 are arranged in an arc-shaped array within the corner bending area 121, multiple openings 107 are set between corresponding intervals 106, and the multiple openings 107 are arranged in at least one row. In order to ensure the effect of the openings 107 on the panel, the arrangement direction of the openings 107 is the same as the radial direction of the corner bending area 121.

[0042] Preferably, the spacing 106 within different rows can be set accordingly for the corresponding light-emitting pixels and spacing 106 within different rows. For example, on the center line O1 in the radial direction, the arrangement direction of the spacing 106 within different rows is the same as the extension direction of the center line O1. Furthermore, within different spacings 106, the openings 107 can also be set in multiple rows. For example, within the same spacing 106 area, in the direction towards the center line O1, the openings 107 are set in two rows.

[0043] Furthermore, when setting the opening 107, if corresponding openings 10 are set within the same interval 106, the panel experiences greater stress during bending. Therefore, the opening diameter near the center of the arc is larger than that away from the center. Simultaneously, the opening depth near the center can also be greater than that away from the center. Since the opening diameter and corresponding depth near the center of the panel are both greater than those near the edge, the effect of the opening near the center is superior to that of the opening at the edge. This effectively improves the performance of the display panel.

[0044] Preferably, when setting the corresponding light-emitting pixels in different rows and the pixel units corresponding to the light-emitting pixels, the width between the intervals 106 in different rows can be set to be different in the same radial direction, so that the light-emitting pixels in different rows are regularly distributed and form a shape structure of an arc array that is the same as or similar to the corner bending area 121 and distributed radially.

[0045] like Figure 4 As shown, Figure 4 This is another structural schematic diagram of the display panel provided in this application embodiment. When setting the light-emitting pixels 111 within the corner bending area 121, the arrangement direction of each pixel group within the light-emitting pixel 111 can also be the same as the radial direction of the corner bending area 121, such as... Figure 4 The pixels are arranged in a strip shape, and the direction of the strip is the same as the radial direction of the corner bending area 121. An opening 107 is provided between adjacent strip structures. The opening 107 can be provided in each gap area, or only in the middle area of ​​the corner bending area 121. In this embodiment, when multiple pixel SGNAIX strips are provided, the distance between each pixel strip can be set according to actual needs. For example, the spacing at the center of the corner bending area can be greater than the spacing on both sides of the corner bending area, thereby effectively ensuring the performance of the corner areas of the display panel.

[0046] Furthermore, in combination Figure 1 In this embodiment, the display panel further includes an insulating layer 104, a passivation layer 105, and an encapsulation layer 103. The insulating layer 104 is disposed on the light-emitting pixels 111, the passivation layer 105 is disposed on the insulating layer 104, and the encapsulation layer 103 is disposed on the passivation layer 105. The insulating layer 104, passivation layer 105, and encapsulation layer 103 seal the light-emitting pixels. Furthermore, when the panel in this area is bent during manufacturing, each pixel group is individually sealed, thus avoiding the problem of partial damage to the light-emitting pixels leading to structural failure, and effectively ensuring the performance of the corner bending area.

[0047] like Figure 5 As shown, Figure 5 This is a schematic diagram of the film layer structure corresponding to the display panel fabrication process provided in this application embodiment. When fabricating the display panel, a buffer layer 101 is first provided, and a driving layer 102 is formed on the buffer layer 101. In this application embodiment, the buffer layer 101 and the driving layer 102 are used to support the display panel.

[0048] After the driving layer 102 is fabricated, light-emitting pixels 111 are fabricated on the driving layer 102. Each light-emitting pixel 111 includes multiple pixel groups. Specifically, when fabricating the light-emitting pixels 111 within the corner bending region 121, the light-emitting pixels 111 are patterned and etched. This ensures that adjacent first pixel groups 109 and second pixel groups 110 are spaced apart. That is, a certain gap 106 is etched between the two pixel groups. In this embodiment, each pixel group includes multiple light-emitting sub-pixels, such as red, blue, and green sub-pixels of different colors. The aforementioned light-emitting sub-pixels of different colors are merely examples; other colors can also be used. In this embodiment, the aforementioned sub-pixels are arranged sequentially. Preferably, the number of light-emitting sub-pixels in each pixel group is not specifically limited and can be set according to the actual product.

[0049] See details Figure 6 An insulating layer 104 is then deposited on the light-emitting pixel 111. The insulating layer 104 can be prepared by a vapor deposition process. The insulating layer 104 is deposited on both the light-emitting pixel 111 disposed in the planar display area 120 and the corner bending area 121, and encapsulates the corresponding light-emitting pixel or pixel unit. In this embodiment, the insulating layer 104 can be an optical adhesive layer.

[0050] See details Figures 7-8 After the insulating layer 104 is prepared, a passivation layer 105 is prepared on the insulating layer 104. In this embodiment, the passivation layer 105 can be prepared on the insulating layer 104 by inkjet printing. After the inkjet printing is completed, the excess passivation layer 105 material in the gap 10 is etched away, and finally the passivation layer 105 corresponding to each light-emitting pixel 111 is retained.

[0051] After the passivation layer 105 is prepared, an encapsulation layer 103 is then formed on the passivation layer 105. Specifically, the encapsulation layer 103 can be prepared by chemical vapor deposition. During the preparation process, the encapsulation layer 103 is disposed in the area corresponding to each pixel group. After preparation, the excess encapsulation layer 103 within the interval 106 is etched, and the remaining encapsulation layer 103 encapsulates each light-emitting pixel 111, thereby forming a sealed protection for each pixel unit provided in this embodiment. In this embodiment, the protective film layers prepared above can be set according to the needs of the actual product, so that the display panel has good performance without increasing the total thickness of the product.

[0052] Furthermore, in this embodiment, after the preparation and encapsulation of each pixel group in the corner bending region 121 and the flat display region 120 are completed, the various film layers of the display panel are further processed. Specifically, openings are made in the driving layer 102 in the corner bending region 121.

[0053] An opening 107 is formed on the driving layer 102 corresponding to the interval 106 by photomask processing or other etching processes. The opening 107 is located between two adjacent pixel units, and there can be multiple openings 107 arranged in at least one row. In this embodiment, when etching to form the opening 107, each opening 107 can be configured as a blind hole, and the blind hole is etched to at least half the thickness of the driving layer 102, even if the depth of the blind hole is greater than half the thickness of the driving layer 102.

[0054] Furthermore, in this embodiment, when forming openings 107 within different intervals 106, the aperture of each opening can be set to be the same or different. When set to different apertures, the aperture of the opening 107 near the center of the display panel is larger than the aperture of the opening 107 far from the center of the display panel. This effectively improves the effect of the opening 107 on the display panel.

[0055] In this embodiment, the pixel unit arrangement in different regions is only an example. The pixel units in the corner bending region can also be arranged in other ways, and holes can be made in the driving layer corresponding to the gap between adjacent pixel groups. This effectively improves the bending performance and display effect of the display panel at the Gaussian surface at the four corners, and improves the overall performance of the display panel.

[0056] Furthermore, embodiments of the present invention also provide a display device, which includes a display panel, the display panel being the panel provided in the embodiments of the present invention. This display device has good overall performance.

[0057] The above provides a detailed description of a display panel and display device provided by the embodiments of the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of the present invention. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A display panel, characterized in that, include: The display area includes a corner bend area located at the edge corner of the display area. The corner bend area includes: The driver layer; and, The light-emitting pixel is disposed on the driving layer, and the light-emitting pixel includes multiple pixel groups, with adjacent pixel groups spaced apart. The corner bending area is set as an arc, the curved surface at the corner bending area is a Gaussian surface, the display panel also includes openings, the openings are set on the driving layer corresponding to the interval area between the pixel groups, and the plurality of openings are set in at least one row on the driving layer, and the arrangement direction of the openings is consistent with the radial direction of the arc.

2. The display panel according to claim 1, characterized in that, The boundary of the arc coincides with the boundary of the display area.

3. The display panel according to claim 1, characterized in that, The diameter of the opening near the center of the arc is larger than the diameter of the opening away from the center of the arc.

4. The display panel according to claim 1, characterized in that, The opening depth of the opening near the center of the arc is greater than the opening depth of the opening away from the center of the arc.

5. The display panel according to claim 1, characterized in that, The multiple pixel groups are arranged in an arc shape within the corner bending area, and the arrangement direction of the spacing between adjacent pixel groups is the same as the radial direction in the radial direction of the corner bending area.

6. The display panel according to claim 5, characterized in that, The widths of the intervals differ in the same radial direction.

7. The display panel according to claim 1, characterized in that, The corner bending area is set in an arc shape, and the light-emitting pixels are arranged along the radial direction of the arc.

8. The display panel according to claim 1, characterized in that, The display panel further includes an insulating layer and an encapsulation layer. The insulating layer is disposed on the light-emitting pixels, and the encapsulation layer is disposed on the insulating layer.

9. A display device, characterized in that, The display panel includes any one of claims 1-8, the display panel including a display area, the display area including a corner bending area, the corner bending area being located at the edge corner of the display panel, the corner bending area including: Driver layer; A light-emitting pixel is disposed on the driving layer. The light-emitting pixel includes multiple pixel groups, with adjacent pixel groups spaced apart. The driving layer has multiple openings corresponding to the spacing between the pixel groups. An encapsulation layer is disposed on the light-emitting pixel.

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