Display panel and display device

Abstract

This application discloses a display panel and a display device. The display panel includes a display area and a non-display area. The display area includes a first functional area and a second functional area surrounded by the first functional area. The light transmittance of the second functional area is higher than that of the first functional area. The non-display area is located on the side of the first functional area away from the second functional area. The non-display area includes a first sub-edge and a second sub-edge forming the edge of the display panel. The distance from the first sub-edge to the first functional area is less than the distance from the second sub-edge to the first functional area. The first sub-edge is positioned closer to the second functional area than the second sub-edge, which can prevent the portion of the non-display area bent to the backlight side of the display panel from blocking the second functional area and does not affect the light transmittance of the second functional area.

Description

Technical Field

[0001] This application belongs to the field of display technology, and in particular relates to a display panel and a display device. Background Technology

[0002] The size and weight of a display panel are important considerations for its application in display devices. To make electronic devices more aesthetically pleasing and increase the screen display area, it is necessary to minimize the bezel size of the display panel, a process known as narrow bezel design. Current technology can achieve this by bending the non-display area of ​​the substrate in a flexible display panel towards the backlight side of the display panel, thereby reducing the size of the bezel area.

[0003] The display panel has high light transmittance areas such as under-display camera and fingerprint recognition. When the non-display area is bent, it is easy to block the high light transmittance areas, reducing the light transmittance. Summary of the Invention

[0004] The purpose of this application is to provide a display panel and display device that aims to solve the problem that the high light transmittance area of ​​existing display devices is easily blocked, resulting in a decrease in light transmittance.

[0005] The first aspect of this application provides a display panel, including a display area and a non-display area. The display area includes a first functional area and a second functional area surrounded by the first functional area. The light transmittance of the second functional area is higher than that of the first functional area. The non-display area is located on the side of the first functional area away from the second functional area. The non-display area includes a first sub-edge and a second sub-edge forming the edge of the display panel. The distance from the first sub-edge to the first functional area is less than the distance from the second sub-edge to the first functional area, and the first sub-edge is disposed closer to the second functional area than the second sub-edge.

[0006] A second aspect of this application provides a display device including the aforementioned display panel.

[0007] Compared with the prior art, the light transmittance of the second functional area of ​​the display panel provided in this application embodiment is higher than that of the first functional area. The non-display area includes a first sub-edge and a second sub-edge forming the edge of the display panel. After the non-display area is bent, both the first sub-edge and the second sub-edge are located on the backlight side of the display panel. Since the distance from the first sub-edge to the first functional area is less than the distance from the second sub-edge to the first functional area, and the first sub-edge is set closer to the second functional area than the second sub-edge, the non-display area bent to the backlight side of the display panel can be prevented from blocking the second functional area, and the light transmittance of the second functional area is not affected. Attached Figure Description

[0008] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1 A schematic diagram showing the display panel in a flattened state as provided in the embodiments of this application;

[0010] Figure 2 This is a schematic diagram showing another display panel in a flattened state, provided for an embodiment of this application.

[0011] Figure 3 This is a cross-sectional structural diagram of a display panel provided in an embodiment of this application;

[0012] Figure 4 A schematic diagram illustrating a bent state of the display panel provided in this embodiment of the application;

[0013] Figure 5 A schematic diagram showing the display panel viewed from another angle when the display panel is in a bent state, as provided in the embodiments of this application;

[0014] Figure 6 This is a schematic diagram illustrating another display panel in a flattened state, provided as an embodiment of this application.

[0015] Figure 7 This is a partial schematic diagram of a display panel provided in an embodiment of this application;

[0016] Figure 8 Another schematic diagram of a display panel provided in an embodiment of this application;

[0017] Figure 9 This is a partial schematic diagram of a display panel provided in an embodiment of this application;

[0018] Figure 10 Another schematic diagram of a display panel provided in an embodiment of this application;

[0019] Figure 11 Another schematic diagram of a display panel provided in an embodiment of this application;

[0020] Figure 12 This is a partial schematic diagram of a display panel provided in an embodiment of this application;

[0021] Figure 13 Another schematic diagram of a display panel provided in an embodiment of this application;

[0022] Figure 14This is a partial schematic diagram of a display panel provided in an embodiment of this application;

[0023] Figure 15 Another schematic diagram of a display panel provided in an embodiment of this application;

[0024] Figure 16 This is a partial schematic diagram of a display panel provided in an embodiment of this application;

[0025] Figure 17 Another partial schematic diagram of a display panel provided in an embodiment of this application;

[0026] Figure 18 Another partial schematic diagram of a display panel provided in an embodiment of this application;

[0027] Figure 19 Another partial schematic diagram of a display panel provided in an embodiment of this application;

[0028] Figure 20 A schematic diagram of a display panel provided in an embodiment of this application;

[0029] Figure 21 Another schematic diagram of the display panel provided in an embodiment of this application;

[0030] Figure 22 This is another partial schematic diagram of a display panel provided in an embodiment of this application.

[0031] The attached icons are numbered as follows:

[0032] Display area AA; First functional area 11; Second functional area 12; First edge 1a; Second edge 1b; First end 121; Second end 122; Third end 123; Fourth end 124; Non-display area NA; First sub-non-display area 21; Second sub-non-display area 22; Third sub-non-display area 23; Fourth sub-non-display area 24; Fifth sub-non-display area 25; First sub-edge 2a; Second sub-edge 2b; Third sub-edge 2c; Fourth sub-edge 2d; First sub-bending area 26; Second sub-bending area 27; Binding Area 28; Crease 261; Third edge 2e; Fourth edge 2f; Step 29; Chip bonding area 281; FPC bonding area 282; First direction X; Second direction Y; First chip 31; Second chip 32; Signal line 40; Data signal line 41; First power signal line 42; Second power signal line 43; FPC 50; Bending area 60; Light-emitting side 71; Backlight side 72; Array substrate 81; Substrate 811; Array layer 812; Light-emitting device layer 82; Encapsulation layer 83; Light-emitting unit 821. Detailed Implementation

[0033] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of this application by way of example, but should not be used to limit the scope of this application, that is, this application is not limited to the described embodiments.

[0034] In the description of this application, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationships, are only for the convenience of describing this application 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 on this application. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. "Vertical" is not vertical in the strict sense, but within the allowable tolerance range. "Parallel" is not parallel in the strict sense, but within the allowable tolerance range.

[0035] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0036] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. It should also be noted in the description of this application that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0037] like Figure 1 , Figure 2 and Figure 3 As shown, Figure 1 This is a schematic diagram illustrating a flattened display panel as provided in an embodiment of this application. Figure 2 This is a schematic diagram of another display panel provided in an embodiment of the present application in a flattened state. Figure 3 This is a cross-sectional structural diagram of a display panel provided in an embodiment of this application.

[0038] The display panel includes a display area AA and a non-display area NA. The display area AA is the area where the image can be displayed and is equipped with pixel units. The non-display area NA is the area where the image cannot be displayed and is generally used for wiring, or for placing bonding terminals, test terminals, VSR circuits, etc.

[0039] Optionally, the non-display area NA can surround the display area AA circumferentially, or it can be set on any side or opposite sides of the display area AA. For example, the non-display area can be set at the bottom or side of the display panel. It should be noted that the bottom of the display panel refers to the area where chips are placed and chip traces are connected; the side of the display panel refers to the trace area of ​​the left and right bezels of the display panel.

[0040] The display panel includes an array substrate 81, a light-emitting device layer 82, and an encapsulation layer 83 stacked sequentially. The array substrate 81 includes a substrate 811 and an array layer 812. The substrate 811 can be a flexible substrate made of materials such as polyimide (PI) or polyethylene terephthalate (PET) to allow the non-display area NA of the display panel to be bent. The array layer 812 contains a driving circuit for controlling the light emission of the light-emitting device layer 82. The array layer 812 is generally composed of inorganic film layers such as metal layers, semiconductor layers (active layers), and insulating layers. By patterning these inorganic film layers, a driving circuit for controlling the light emission of the light-emitting device layer 82 can be formed. There are various ways to implement the specific circuit structure, which will not be elaborated here.

[0041] The light-emitting device layer 82 is located on the side of the array layer 812 away from the substrate 811. The light-emitting device layer 82 includes an anode layer, a light-emitting layer, and a cathode layer. The light-emitting layer further includes a light-emitting material layer, a hole transport layer, and an electron transport layer. When the anode layer and cathode layer are energized, electrons and holes migrate from the electron transport layer and hole transport layer to the light-emitting material layer, respectively, and meet in the light-emitting material layer to form excitons that excite the light-emitting molecules, thereby generating visible light to achieve the purpose of display.

[0042] The encapsulation layer 83 is located on the side of the light-emitting device layer 82 away from the substrate 811 and covers the light-emitting device layer 82 to protect it from corrosion and damage by moisture and oxygen. The encapsulation layer 83 can be a thin-film encapsulation layer 83, including an inorganic encapsulation layer 83, an organic encapsulation layer 83, and an inorganic encapsulation layer 83 stacked together, to block moisture and oxygen.

[0043] The display area AA includes a first functional area 11 and a second functional area 12 surrounded by the first functional area 11. The light transmittance of the second functional area 12 is higher than that of the first functional area 11. The side of the display panel that emits light is the light-emitting side 71, and the side opposite to the light-emitting side 71 is the backlight side 72. The light transmittance of the second functional area 12 is greater than that of the first functional area 11. This can be understood as the second functional area 12 allowing more external light to pass through the display panel from the light-emitting side 71 and exit from the backlight side 72 compared to the first functional area 11.

[0044] The light-emitting device layer includes multiple light-emitting units 821. The light-emitting units 821 in the second functional area 12 can be sparser than those in the first functional area 11, so that the spacing between adjacent light-emitting units 821 in the second functional area 12 is greater than that in the first functional area 11, thereby achieving a higher light transmittance in the second functional area 12 than in the first functional area 11. Alternatively, the size of the light-emitting units in the second functional area 12 can be smaller than that in the first functional area 11, so that the spacing between adjacent light-emitting units 821 in the second functional area 12 is the same as that in the first functional area 11, achieving a higher light transmittance in the second functional area 12 than in the first functional area 11. Compared to the first functional area 11, the second functional area 12, being on the side facing away from the light-emitting side 71 of the display panel, is more suitable for mounting photosensitive elements such as cameras and infrared sensors to sense light emitted from the backlight side 72 of the display panel through the light-emitting side. To achieve a full-screen design for the display device, light-receiving holes can be formed in the opaque layer of the display panel. In a direction perpendicular to the substrate, the light-receiving holes overlap with the projection of the photosensitive element. Specifically, the opaque layer can be an inorganic insulating layer in the array layer 812, or a pixel defining layer located on the array layer 812, etc.

[0045] In other embodiments, a through-hole can be formed in the second functional area 12 to allow more light to pass through the second functional area 12. In this case, the second functional area 12 cannot display an image.

[0046] Optionally, the orthographic projection of the second functional area 12 onto the display panel can be a circle, ellipse, rectangle, or other polygonal shape. The second functional area 12 can be as follows: Figure 1 In the illustrated embodiment, it is located on the side of the display area AA near the bottom of the display panel; alternatively, it can be as follows: Figure 2 In the illustrated embodiment, the display area AA is located on the side near the top of the display panel, the bending area 60 is located on the side of the display panel, and the non-display area NA is bent along the side of the display panel to the backlight side 72. It should be noted that the top of the display panel refers to the side of the display panel away from the bottom.

[0047] Optionally, the non-display area NA is located on the side of the first functional area 11 away from the second functional area 12. The non-display area NA includes a first sub-edge 2a and a second sub-edge 2b forming the edge of the display panel. When the display panel is in a flat state, the distance from the first sub-edge 2a to the first functional area 11 is less than the distance from the second sub-edge 2b to the first functional area 11, and the first sub-edge 2a is positioned closer to the second functional area 12 relative to the second sub-edge 2b. It should be noted that the first sub-edge 2a and the second sub-edge 2b can be located on the same side of the display panel or on opposite sides of the display panel. When the display panel is in a flat state, the first sub-edge 2a is positioned closer to the second functional area 12 relative to the second sub-edge 2b, that is, the distance from the first sub-edge 2a to the second functional area 12 is less than the distance from the second sub-edge 2b to the second functional area 12.

[0048] Figure 4 A schematic diagram illustrating a bent state of the display panel provided in this embodiment of the application; Figure 5 This is a schematic diagram showing the display panel viewed from another angle when it is in a bent state, according to an embodiment of this application.

[0049] It should be noted that the terms "flattened state" and "bent state" in this application refer to the bent and flattened states of the non-display area (NA) of the display panel, respectively. Specifically, as... Figure 4 and Figure 5 As shown, the non-display area of ​​the display panel is bent along the bending area 60, and part of the non-display area is bent to the backlight side. The bending direction is the extension direction of the first sub-edge 2a or the second sub-edge 2b. Figure 4 The viewing angle is from the light-emitting side of the display panel. Figure 5 The viewing angle is 72 on the backlight side of the display panel, and the non-display area can be used to obtain a narrow bezel display panel when bent.

[0050] In some embodiments, if the bending area 60 is located in the non-display area corresponding to the second sub-edge 2b, and the second sub-edge 2b bends to the backlight side 72 of the display panel, since the second sub-edge 2b is farther away from the second functional area 12 than the first sub-edge 2a, the non-display area corresponding to the second sub-edge 2b will not cover the second functional area 12. This avoids the non-display area bent to the backlight side 72 of the display panel from obscuring the second functional area 12 and does not affect the light transmittance of the second functional area 12. It should be noted that the non-display area corresponding to the second sub-edge 2b refers to the non-display area with the second sub-edge 2b as its edge.

[0051] Of course, in some other alternative embodiments of this application, such as Figure 6 As shown, Figure 6This is a schematic diagram of another display panel in a flattened state provided in an embodiment of this application. The bending area is located between the first sub-edge 2a and the display area AA. Since the distance from the first sub-edge 2a to the first functional area 11 is less than the distance from the second sub-edge 2b to the first functional area 11, even if both the first sub-edge 2a and the second sub-edge 2b are bent to the backlight side 72 of the display panel, after bending, the first sub-edge 2a has a certain distance from the edge of the second functional area 12, or is tangent to the edge of the second functional area 12. The non-display area NA portion bent to the backlight side of the display panel will not block the second functional area 12.

[0052] Furthermore, since the bending area 60 is located between the first sub-edge 2a and the second functional area 12, the bending area 60 passes through the non-display areas corresponding to the first sub-edge 2a and the second sub-edge 2b, respectively. The width of the bending area 60 along the extension direction of the first sub-edge 2a or the second sub-edge 2b is relatively large. With the number of signal lines 40 remaining unchanged, the wiring space of the bending area 60 is increased, which facilitates the arrangement of the signal lines 40 in the bending area 60 and ensures that the signal lines 40 in the bending area 60 are not restricted.

[0053] Optionally, the distance from the first sub-edge 2a to the bending area 60 is less than the distance from the bending area 60 to the second functional area 12, thus ensuring that after the non-display area NA is bent, the first sub-edge 2a and the second functional area 12 have a certain distance between them.

[0054] In this embodiment, by setting a first sub-edge 2a and a second sub-edge 2b in the non-display area NA, and limiting the distance from the first sub-edge 2a to the first functional area 11 to be less than the distance from the second sub-edge 2b to the first functional area 11, and setting the first sub-edge 2a closer to the second functional area 12 relative to the second sub-edge 2b, the non-display area NA of the display panel is not bent and blocks the second functional area 12 with a large light transmittance, thus preventing the light transmittance of the second functional area 12 from being affected.

[0055] In some embodiments, the display area AA has a first edge 1a and a second edge 1b arranged at relative intervals along the first direction X. The first edge 1a and the second edge 1b are located on opposite sides of the second functional area 12, and the first edge 1a and the second edge 1b can be arranged in parallel. The first sub-edge 2a and the second sub-edge 2b are located on the same side of the first edge 1a. The first sub-edge 2a and the second sub-edge 2b are both sub-edges of the area where the non-display area NA is arranged along the first edge 1a.

[0056] When the display panel is in the unfolded state, the distance from the first sub-edge 2a to the first functional area 11 is less than the distance from the second sub-edge 2b to the second functional area 12, and the first sub-edge 2a is closer to the first edge 1a than the second sub-edge 2b. When the display panel is bent, the first sub-edge 2a has a certain distance from the edge containing the second functional area 12, or is tangent to the edge of the second functional area 12. The second sub-edge 2b is far from the second functional area 12 and will not cover the second functional area 12, thus preventing the non-display area NA from blocking the second functional area 12 after bending, and preventing the light transmittance of the second functional area 12 from being affected. Moreover, the first sub-edge 2a and the second sub-edge 2b are located on the same side of the first edge 1a, which, compared to the scheme where the first sub-edge 2a and the second sub-edge 2b are located on opposite sides of the first edge 1a, can reduce the bezel size of the display panel and achieve a narrow bezel design.

[0057] Furthermore, in some embodiments, the distance from the first edge 1a to the second functional area 12 is less than the distance from the second edge 1b to the second functional area 12. That is, the second functional area 12 is positioned closer to the first edge 1a than the second edge 1b. After the non-display area NA located on one side of the first edge 1a is bent to the backlight side 72 of the display panel, the second sub-edge 2b is bent to the backlight side 72 of the display panel, or both the first sub-edge 2a and the second sub-edge 2b are bent to the backlight side 72 of the display panel. Since the first sub-edge 2a is closer to the second functional area 12 than the second sub-edge 2b, and the distance from the first sub-edge 2a to the second functional area 12 is less than the distance from the second sub-edge 2b to the second functional area 12, the non-display area portions corresponding to the first sub-edge 2a and the second sub-edge 2b will not obstruct the second functional area 12.

[0058] Optionally, the first edge is located near the bottom of the display panel. Since the chip is usually located at the bottom of the display panel, if the second functional area 12 is a transparent display area and the second functional area 12 is located near the first edge 1a, the length of the trace connecting the light-emitting unit 821 in the second functional area 12 to the chip can be reduced.

[0059] Figure 7 This is a partial schematic diagram of a display panel provided in an embodiment of this application. In some embodiments, the non-display area NA includes a first sub-non-display area 21 and a second sub-non-display area 22 arranged along a first edge 1a. The first sub-edge 2a is the edge of the first sub-non-display area 21, and the second sub-edge 2b is the edge of the second sub-non-display area 22. The first sub-non-display area 21 and the second sub-non-display area 22 are arranged sequentially along a second direction Y, which is perpendicular to the first direction X and parallel to the plane of the display panel.

[0060] In this embodiment, since the first sub-edge 2a is positioned closer to the second functional area 12 than the second sub-edge 2b, and the first sub-edge 2a is the edge of the first sub-non-display area 21, and the second sub-edge 2b is the edge of the second sub-non-display area 22, the first sub-non-display area 21 is positioned closer to the second functional area 12 than the second sub-non-display area 22. If the first sub-non-display area 21 is bent, its orthographic projection along the direction perpendicular to the display panel substrate 811 will not overlap with the second functional area 12, and the first sub-non-display area 21 will not obstruct the second functional area 12. Since the second sub-non-display area 22 is farther from the second functional area 12 than the first sub-non-display area 21, its orthographic projection along the direction perpendicular to the display panel substrate will also not overlap with the second functional area 12, and the second sub-non-display area 22 will not obstruct the second functional area 12. Therefore, the light transmittance of the second functional area 12 will not decrease. It is understandable that if the second sub-non-display area 22 is bent, the non-display area portion bent to the backlight side 72 of the display panel will not obstruct the second functional area 12.

[0061] Optionally, if the first sub-edge 2a and the second sub-edge 2b extend along the second direction Y, then the width of the first sub-non-display area 21 along the first direction X is smaller than the width of the second sub-non-display area 22 along the first direction X.

[0062] This embodiment improves the compatibility of the display panel by distributing the first sub-edge 2a and the second sub-edge 2b in two different sub-non-display areas, allowing for selection of the bending area as needed. Bending in the first sub-non-display area 21 results in a narrower bezel for the display panel. Bending in the second sub-non-display area 22, when a sub-non-display area is also provided on the edge side of the display area AA intersecting the first edge 1a, and this sub-non-display area also needs to be bent, avoids folding and accumulation at the intersecting corner area (the intersection area of ​​different edges of the display panel), reducing wrinkles and improving the fit of the corner area after bending. It should be noted that the edge side of the display area AA intersecting the first edge 1a refers to the other edge of the display area AA intersecting the first edge 1a. For example, sub-non-display areas are provided not only on the upper and lower bezels of the display panel, but also on the left and right bezels.

[0063] Optionally, the display panel also includes a first chip 31 and multiple signal lines 40 extending along the first direction X. Since the second sub-non-display area 22 is wider along the first direction X, the first chip 31 is placed in the second sub-non-display area 22, and the signal lines 40 are connected to the first chip 31. For the requirement that the second functional area 12 be close to the first edge 1a, in order to prevent the first sub-non-display area 21 and the second sub-non-display area 22 from obstructing the second functional area 12 after bending, the width of the first sub-non-display area 21 along the second direction Y must be greater than or equal to the width of the second functional area 12 along the second direction Y. Increasing the width of the first sub-non-display area 21 along the second direction Y will compress the width of the second sub-non-display area 22 along the second direction Y, which may result in the signal lines 40 in the non-display area NA not being able to be arranged, or the fan-out wiring in the corner area of ​​the display panel not being possible, or the number of signal lines 40 remaining the same, but the spacing between the signal lines 40 need to be reduced, increasing the manufacturing difficulty.

[0064] Figure 8 This is another partial schematic diagram of a display panel provided in an embodiment of this application. In some embodiments, such as Figure 8 As shown, the non-display area NA also includes a third sub-non-display area 23 located on the side of the second sub-non-display area 22 opposite to the first sub-non-display area 21. The first sub-non-display area 21, the second sub-non-display area 22, and the third sub-non-display area 23 are arranged sequentially along the first edge 1a. The third sub-non-display area 23 includes a third sub-edge 2c forming the edge of the display panel. The distance from the second sub-edge 2b to the first functional area 11 is less than the distance from the third sub-edge 2c to the first functional area 11. The width of the second sub-non-display area 22 along the first direction X is less than the width of the third sub-non-display area 23 along the first direction X. The second sub-edge 2b is positioned closer to the second functional area 12 relative to the third sub-edge 2c, that is, the second sub-non-display area 22 is positioned closer to the second functional area 12 relative to the third sub-non-display area 23.

[0065] In this embodiment, after the non-display area NA is bent, the second sub-edge 2b has a certain distance from the edge of the second functional area 12, or is tangent to the edge of the second functional area 12. The orthographic projection of the second sub-non-display area 22 along the direction perpendicular to the display panel substrate does not overlap with the second functional area 12. Therefore, the second sub-non-display area 22 will not block the second functional area 12. Since the third sub-non-display area 23 is farther away from the second functional area 12 than the second sub-non-display area 22, after the non-display area NA is bent, the orthographic projection of the third sub-non-display area 23 along the direction perpendicular to the display panel substrate does not overlap with the second functional area 12. The third sub-non-display area 23 will not block the second functional area 12, thus ensuring that the light transmittance of the second functional area 12 is not reduced, facilitating the arrangement of the signal lines 40, and ensuring that the arrangement of the signal lines 40 is not restricted.

[0066] Please refer to the following: Figure 9 and Figure 10 , Figure 9 This is a partial schematic diagram of a display panel provided in an embodiment of this application; Figure 10 This is another partial schematic diagram of a display panel provided in an embodiment of this application. In some embodiments, the non-display area NA further includes a first sub-bending area 26, at least a portion of which is located within the area of ​​the second sub-non-display area 22.

[0067] The crease 261 of the first sub-bending area 26 extends along the second direction Y. If the non-display area NA only has the first sub-non-display area 21 and the second sub-non-display area 22 on the first edge 1a side, then the first sub-bending area 26 is entirely located within the area of ​​the second sub-non-display area 22. If the non-display area NA has the first sub-non-display area 21, the second sub-non-display area 22, and the third sub-non-display area 23 on the first edge 1a side, then a portion of the first sub-bending area 26 is located within the area of ​​the second sub-non-display area 22, and another portion of the first sub-bending area 26 is located within the area of ​​the third sub-non-display area 23. That is to say, the first sub-bending area 26 does not pass through the first sub-non-display area 21. If a sub-non-display area is also provided on the edge side of the display area AA where the display panel intersects with the first edge 1a, and this sub-non-display area also needs to be bent, the corner area where they intersect can be prevented from folding and accumulating, reducing wrinkles and thus improving the fit of the corner area after bending.

[0068] Furthermore, in the above embodiments, after adding the third sub-non-display area 23, the first sub-bending area 26 can pass through the second sub-non-display area 22 and the third sub-non-display area 23 along the second direction Y respectively. Compared with the embodiment where only the first sub-non-display area 21 and the second sub-non-display area 22 are set along the second direction Y, and the first sub-bending area 26 is only set in the second sub-non-display area 22 along the second direction Y, the width of the first sub-bending area 26 along the second direction Y is increased in this embodiment. With the number of signal lines 40 remaining unchanged, the wiring space of the first sub-bending area 26 is increased, which facilitates the arrangement of the signal lines 40 in the first sub-bending area 26 and ensures that the signal lines 40 in the first sub-bending area 26 are not restricted.

[0069] Figure 11 This is another partial schematic diagram of a display panel provided in an embodiment of this application. In some embodiments, the non-display area NA includes a third edge 2e and a fourth edge 2f disposed opposite to each other along the second direction Y, and the third edge 2e and the fourth edge 2f are the edges of the display panel. In this embodiment, the non-display area NA is disposed circumferentially around the display area AA. In other embodiments, the non-display area may not be disposed along the second direction Y, in which case the third edge 2e and the fourth edge 2f are the edges of the display area AA.

[0070] The third edge 2e is located near the second functional area 12. The second functional area 12 has a first end 121 and a second end 122 formed along the first direction X. The first end 121 is located near the first edge 1a. In the first direction X, the distance from the second sub-edge 2b to the first sub-bending area 26 is less than or equal to the distance from the first sub-bending area 26 to the first end 121.

[0071] The first sub-bending area 26 is bent along the crease 261, which extends along the second direction Y. It should be noted that in this embodiment, the distance from the second sub-edge 2b to the first sub-bending area 26 refers to the component H1 of the distance from the second sub-edge 2b to the crease 261 along the first direction X, and the distance from the first sub-bending area 26 to the first end 121 refers to the component H2 of the distance from the crease 261 to the first end 121 along the first direction X.

[0072] In this embodiment, when the display panel is in a flattened state, H1≤H2. After the non-display area NA bends along the crease 261 of the first sub-bending area 26, the second sub-edge 2b is located on the backlight side 72 of the display panel. The second sub-edge 2b has a certain distance from the first end 121 or is in contact with the first end 121. The portion of the second sub-non-display area 22 that bends to the backlight side 72 of the display panel does not obstruct the second functional area 12.

[0073] Figure 12 This is a partial schematic diagram of a display panel provided in an embodiment of this application. Further, the non-display area NA includes a third edge 2e and a fourth edge 2f disposed opposite to each other along the second direction Y. The first direction X and the second direction Y are perpendicular to each other. The third edge 2e is disposed close to the second functional area 12. The second functional area 12 has a third end 123 and a fourth end 124 formed along the second direction Y. The third end 123 is disposed close to the third edge 2e. In the second direction Y, the distance from the third edge 2e to the second sub-non-display area 22 is greater than or equal to the distance from the third edge 2e to the fourth end 124.

[0074] It should be noted that the distance from the third edge 2e to the second sub-non-display area 22 refers to the component L1 of the distance from the third edge 2e to the second sub-non-display area 22 along the second direction Y, and the distance from the third edge 2e to the fourth end 124 refers to the component L2 of the distance from the third edge 2e to the fourth end 124 along the second direction Y. When the display panel is in a flattened state, L1≥L2. When the non-display area NA is bent along the crease 261 of the first sub-bending area 26, the side of the second sub-non-display area 22 closest to the third edge 2e has a certain distance from the fourth end 124, or is in contact with the fourth end 124, ensuring that the second sub-non-display area 22 bent to the backlight side 72 of the display panel will not cover or block the second functional area 12, and the light transmittance of the second functional area 12 is not affected.

[0075] Figure 13This is a partial schematic diagram of a display panel provided in an embodiment of this application. In some other embodiments, the non-display area NA further includes a third sub-non-display area 23 located on the side of the second sub-non-display area 22 opposite to the first sub-non-display area 21. The third sub-non-display area 23 includes a third sub-edge 2c forming the edge of the display panel. The distance from the second sub-edge 2b to the first functional area 11 is less than the distance from the third sub-edge 2c to the first functional area 11. The first sub-non-display area 21, the second sub-non-display area 22, and the third sub-non-display area 23 are arranged sequentially along the first edge 1a. The width of the second sub-non-display area 22 along the first direction X is less than the width of the third sub-non-display area 23 along the first direction X. In the second direction Y, the distance from the third edge 2e to the third sub-non-display area 23 is greater than or equal to the distance from the third edge 2e to the fourth end 124.

[0076] It should be noted that the distance from the third edge 2e to the third sub-non-display area 23 refers to the component L3 of the distance from the third edge 2e to the third sub-non-display area 23 along the second direction Y. When the display panel is in a flattened state, L3 ≥ L2. When the non-display area NA bends along the crease 261 of the first sub-bending area 26, the side of the third sub-non-display area 23 closest to the third edge 2e has a certain distance from the fourth end 124, or is in contact with the fourth end 124, preventing the third sub-non-display area 23 bent to the backlight side 72 of the display panel from covering or blocking the second functional area 12, and the light transmittance of the second functional area 12 is not affected.

[0077] Figure 14 This is a partial schematic diagram of a display panel provided in an embodiment of this application. Figure 14 As shown, in some embodiments, the display panel further includes a first chip 31, an FPC 50 (flexible printed circuit board), and multiple signal lines 40 extending along a first direction X. The first chip 31 and the FPC 50 are disposed in a second sub-non-display area 22. The signal lines 40 are connected to the first chip 31, which includes multiple input pins, each of which is electrically connected to wiring on the FPC 50. The first chip 31 and the FPC 50 provide driving signals to the pixel array in the display panel, thereby enabling image display.

[0078] The non-display area NA also includes a bonding area 28, which includes a chip bonding area 281 and an FPC bonding area 282. The first chip 31 is located in the chip bonding area 281, and the FPC 50 is located in the FPC bonding area 282. Since the second sub-non-display area 22 is wider along the first direction X, placing the bonding area 28 within the area of ​​the second sub-non-display area 22 facilitates the installation of the first chip 31 and the FPC 50.

[0079] Optionally, both the first sub-bending area 26 and the binding area 28 are located within the area of ​​the second sub-non-display area 22. When the display panel is in a flat state, the first sub-bending area 26 is located between the display area AA and the binding area 28. When the display panel is bent along the crease 261 of the first sub-bending area 26, the binding area 28 is located on the backlight side 72 of the display panel, reducing the bezel of the display panel and achieving a narrow bezel design.

[0080] Figure 15 This is a partial schematic diagram of a display panel provided in an embodiment of this application. In some other embodiments, the non-display area NA further includes a third sub-non-display area 23 located on the side of the second sub-non-display area 22 opposite to the first sub-non-display area 21. The third sub-non-display area 23 includes a third sub-edge 2c forming the edge of the display panel. The distance from the second sub-edge 2b to the first functional area 11 is less than the distance from the third sub-edge 2c to the first functional area 11. The first sub-non-display area 21, the second sub-non-display area 22, and the third sub-non-display area 23 are arranged sequentially along the first edge 1a. The width of the second sub-non-display area 22 along the first direction X is less than the width of the third sub-non-display area 23 along the first direction X. The first sub-bending area 26 passes through the second sub-non-display area 22 and the third sub-non-display area 23. The width of the first sub-bending area 26 along the second direction Y increases, which can ensure that the signal line 40 of the first sub-bending area 26 is unrestricted. The binding area 28 is located within the area of ​​the third sub-non-display area 23, and the first sub-bending area 26 is located between the display area AA and the binding area 28.

[0081] Figure 16 This is a partial schematic diagram of a display panel provided in an embodiment of this application, such as... Figure 16 As shown, in some embodiments, the first sub-edge 2a and the second sub-edge 2b extend along the second direction Y, and the first direction X and the second direction Y are perpendicular to each other.

[0082] The first sub-edge 2a and the second sub-edge 2b are arranged parallel to each other and extend along the second direction Y, which facilitates cutting and reduces the difficulty of the manufacturing process. The second sub-non-display area 22 also includes a fourth sub-edge 2d, through which the first sub-edge 2a and the second sub-edge 2b are connected. The fourth sub-edge 2d can be a straight line extending along the first direction X, that is, the fourth sub-edge 2d is perpendicular to the first sub-edge 2a and the second sub-edge 2b respectively, which facilitates cutting and reduces the difficulty of the manufacturing process.

[0083] Optionally, the fourth sub-edge 2d may also be tilted relative to the first direction X. For example, the fourth sub-edge 2d may be tilted away from the third edge 2e relative to the first direction X, to facilitate the fan-out of the second sub-non-display area 22. In other embodiments, the fourth sub-edge 2d may also be in the form of curves, arcs, or other shapes.

[0084] In other embodiments, the first sub-edge 2a and / or the second sub-edge 2b are inclined relative to the second direction Y in a direction away from the first functional area 11, and the first direction X and the second direction Y are perpendicular to each other.

[0085] Figure 17 This is another partial schematic diagram of a display panel provided in an embodiment of this application. Figure 17 In the illustrated embodiment, the first sub-edge 2a extends along the second direction Y, and the second sub-edge 2b is inclined relative to the second direction Y in a direction away from the first functional area 11. The second sub-non-display area 22 also includes a fourth sub-edge 2d disposed between the first sub-edge 2a and the second sub-edge 2b. The first sub-edge 2a and the second sub-edge 2b are connected by the fourth sub-edge 2d, which extends along the first direction X. The second sub-edge 2b is inclined from the fourth sub-edge 2d in a direction away from the first functional area 11. The end of the first sub-bending area 26 along the second direction Y is connected to the fourth sub-edge 2d. The second sub-edge 2b is located on the side of the first sub-bending area 26 away from the display area AA, so it does not affect the wiring of the first sub-bending area 26. Furthermore, the inclined arrangement of the second sub-edge 2b is beneficial for the fan-out pull wires below the first sub-bending area 26. Of course, in other embodiments, the first sub-edge 2a and the second sub-edge 2b can also be directly connected.

[0086] Figure 18 This is another partial schematic diagram of a display panel provided in an embodiment of this application. Figure 18 In the embodiment shown, the first sub-edge 2a is inclined away from the first functional area 11 relative to the second direction Y, the second sub-edge 2b extends along the second direction Y, and the second sub-non-display area 22 also includes a fourth sub-edge 2d disposed between the first sub-edge 2a and the second sub-edge 2b. The first sub-edge 2a and the second sub-edge 2b are connected by the fourth sub-edge 2d, the fourth sub-edge 2d extends along the first direction X, and the first sub-edge 2a is inclined away from the first functional area 11 along the direction pointing to the fourth sub-edge 2d, which facilitates the fan-out pull line in the corner area of ​​the display panel.

[0087] Figure 19 This is another partial schematic diagram of a display panel provided in an embodiment of this application. Figure 19In the illustrated embodiment, both the first sub-edge 2a and the second sub-edge 2b are inclined away from the first functional area 11 relative to the second direction Y. The first sub-edge 2a and the second sub-edge 2b are directly connected and both are inclined towards the first functional area 11 from the direction of the first sub-edge 2a towards the second sub-edge. The slopes of the first sub-edge 2a and the second sub-edge 2b are the same, increasing the winding space for the fan-out in the corner area. The first sub-bending area 26 is located within the area of ​​the second sub-non-display area 22. Since the shape of the first sub-bending area 26 is an inverted V-shape, the signal lines 40 of the first sub-bending area 26 can also be arranged in an inverted V-shape, which is beneficial for the fan-out wiring of the first sub-bending area 26. In other embodiments, the slopes of the first sub-edge 2a and the second sub-edge 2b may not be the same, or the first sub-edge 2a and the second sub-edge 2b may be indirectly connected.

[0088] Figure 20 This is a schematic diagram of a display panel provided in an embodiment of this application. In some embodiments, the non-display area NA further includes a fourth sub-non-display area 24 located on one side of the second edge 1b, and the first sub-non-display area 21 is disposed relative to the fourth sub-non-display area 24 and close to the second functional area 12. Some signal lines 40 can be arranged in the fourth sub-non-display area 24, thereby reducing the number of signal lines 40 arranged in the second sub-non-display area 22. Even if the width of the second sub-non-display area 22 is reduced along the second direction Y to avoid obstructing the second functional area 12, it can still be ensured that the second sub-non-display area 22 has sufficient space for wiring.

[0089] Figure 21 Another schematic diagram of a display panel provided in an embodiment of this application. For example... Figure 21 As shown, the non-display area NA also includes a fifth sub-non-display area 25 located on one side of the second edge 1b, and the width of the fourth sub-non-display area 24 along the first direction X is smaller than the width of the fifth sub-non-display area 25 along the first direction X.

[0090] The non-display area NA includes a first sub-bending area 26 and a second sub-bending area 27 extending along the second direction Y. The first sub-bending area 26 is located within the area of ​​the second sub-non-display area 22, and the second sub-bending area 27 is located within the area of ​​the fifth sub-non-display area 25. The second sub-non-display area 22 and the fifth sub-non-display area 25 can be bent to the backlight side 72 of the display panel through the first sub-bending area 26 and the second sub-bending area 27, respectively, thereby reducing the width of the display panel bezel and achieving a narrow bezel design.

[0091] Optionally, if a sub-non-display area NA is also provided on the edge side intersecting with the first edge 1a or the second edge 1b (such as the third edge 2e), and the sub-non-display area NA also needs to be bent, bending can be performed on the second sub-non-display area 22 and the fifth sub-non-display area 25 respectively. This can prevent folding and accumulation in the intersecting corner areas, reduce wrinkles, and thus improve the fit of the corner areas after bending.

[0092] In other embodiments, the first sub-bending area 26 may also pass through the first sub-non-display area 21 and the second sub-non-display area 22 respectively, and the second sub-bending area 27 may also pass through the fourth sub-non-display area 24 and the fifth sub-non-display area 25 respectively.

[0093] It is understandable that since the fifth sub-non-display area 25 is located on the second edge 1b side and far away from the second functional area 12, even if the fifth sub-non-display area 25 is bent, it will not interfere with the second functional area 12. Therefore, the component of the distance from the third edge 2e to the fifth sub-non-display area 25 along the second direction Y is not limited. It can be greater than L1, or less than or equal to L1.

[0094] In some embodiments, the display panel further includes a first chip 31, a second chip 32, and a plurality of signal lines 40 extending along a first direction X. The first chip 31 is disposed in a second sub-non-display area 22, the second chip 32 is disposed in a fifth sub-non-display area 25, some of the signal lines 40 are connected to the first chip 31, and other signal lines 40 are connected to the second chip 32.

[0095] Since the wiring space of the second sub-non-display area 22 is larger than that of the first sub-non-display area 21, and the wiring space of the fifth sub-non-display area 25 is larger than that of the fourth sub-non-display area 24, the first chip 31 is placed in the second sub-non-display area 22, and the second chip 32 is placed in the fifth sub-non-display area 25. Some chips extend along the first direction X and merge into the first chip 31, while other signal lines 40 extend along the first direction X and merge into the second chip 32, ensuring sufficient wiring space.

[0096] Optionally, the first chip 31 is located on the side of the first sub-bending area 26 opposite to the first functional area 11, and the second chip 32 is located on the side of the second sub-bending area 27 opposite to the second functional area 12. The first chip 31 can be bent along with the second sub-non-display area 22 to the backlight side 72 of the display panel, and the second chip 32 can be bent along with the fifth sub-non-display area 25 to the backlight side 72 of the display panel, thereby reducing the bezel size of the display panel and achieving a narrow bezel design.

[0097] Furthermore, in some embodiments, the multiple signal lines 40 include a first power signal line 42, a second power signal line 43, and a data signal line 41. The first power signal line 42 and the second power signal line 43 are connected to the first chip 31, and the data signal line 41 is connected to the second chip 32.

[0098] Since there are many data signal lines 41, and the width of the fifth sub-non-display area 25 along the second direction Y is not limited, all data signal lines 41 are merged into the second chip 32. However, the number of first power signal lines 42 and second power signal lines 43 is relatively small compared to the data signal lines 41, and the width of the second sub-non-display area 22 along the second direction Y is limited. Therefore, merging the first power signal lines 42 and second power signal lines 43 into the first chip 31 facilitates the routing of the second sub-non-display area 22 and ensures that the second sub-non-display area 22 does not obstruct the second functional area 12 after bending. Furthermore, the number of VSR signal lines is also relatively small compared to the data signal lines 41; therefore, the VSR signal lines can also be connected to the first chip 31.

[0099] Figure 22 This is another partial schematic diagram of a display panel provided in an embodiment of this application. For example... Figure 22 In the embodiment shown, the outline edge of the non-display area NA along the orthographic projection perpendicular to the display panel substrate is step 29, and the first sub-edge 2a and the second sub-edge 2b are partial edges of step 29, respectively.

[0100] In the manufacturing process of the display panel, the non-display area NA is cut from one side of the third edge 2e along the second direction Y and then along the first direction X to form a step 29, thereby obtaining the first sub-non-display area 21 and the second sub-non-display area 22.

[0101] Optionally, the non-display area NA can be cut twice along the second direction Y and then along the first direction X from one side of the third edge 2e to form two steps 29, resulting in the first sub-non-display area 21, the second sub-non-display area 22 and the third sub-non-display area 23.

[0102] The cutting method in this embodiment is simple and easy to operate. The step 29 formed by the cutting facilitates the bending of the non-display area NA. After bending, the non-display area NA will not block the second functional area 12 and will not affect the light transmittance of the second functional area 12.

[0103] In other embodiments, steps 29 are formed on the contour edges of the display panel at both opposite ends along the second direction Y. The steps 29 at both opposite ends along the second direction Y are symmetrically arranged to ensure that the stress is consistent when the steps 29 are bent, and bending cracks will not occur.

[0104] A second aspect of this application provides a display device including the aforementioned display panel. Since this display device employs all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon here.

[0105] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A display panel, characterized in that, include: The display area includes a first functional area and a second functional area surrounded by the first functional area, wherein the light transmittance of the second functional area is higher than that of the first functional area. A non-display area is located on the side of the first functional area away from the second functional area. The non-display area includes a first sub-edge and a second sub-edge forming the edge of the display panel. The first sub-edge and the second sub-edge are respectively disposed on the same side of the display panel along a first direction, and the first sub-edge and the second sub-edge are arranged along a second direction. The second functional area is disposed on the side of the display area close to the first sub-edge and the second sub-edge. The distance from the first sub-edge to the first functional area is less than the distance from the second sub-edge to the first functional area, and the first sub-edge is disposed closer to the second functional area than the second sub-edge. The first direction and the second direction intersect. When the display panel is in a bent state, the non-display area and the second functional area do not overlap.

2. The display panel according to claim 1, characterized in that, The display area has a first edge and a second edge that are relatively spaced apart along a first direction. The first edge and the second edge are located on opposite sides of the second functional area, and the first sub-edge and the second sub-edge are located on the same side of the first edge.

3. The display panel according to claim 2, characterized in that, The distance from the first edge to the second functional area is less than the distance from the second edge to the second functional area.

4. The display panel according to claim 2, characterized in that, The non-display area includes a first sub-non-display area and a second sub-non-display area arranged along the first edge, wherein the first sub-edge is the edge of the first sub-non-display area and the second sub-edge is the edge of the second sub-non-display area.

5. The display panel according to claim 4, characterized in that, The non-display area also includes a third sub-non-display area located on the side of the second sub-non-display area away from the first sub-non-display area. The third sub-non-display area includes a third sub-edge forming the edge of the display panel. The distance from the second sub-edge to the first functional area is less than the distance from the third sub-edge to the first functional area.

6. The display panel according to claim 4, characterized in that, The non-display area further includes a first sub-bending area, at least a portion of which is located within the area of ​​the second sub-non-display area.

7. The display panel according to claim 6, characterized in that, The non-display area includes a third edge and a fourth edge disposed opposite to each other along a second direction. The first direction and the second direction are perpendicular to each other. The third edge is disposed close to the second functional area. The second functional area is formed with a first end and a second end along a first direction. The first end is disposed close to the first edge. In the first direction, the distance from the second sub-edge to the first sub-bending area is less than or equal to the distance from the first sub-bending area to the first end.

8. The display panel according to claim 4, characterized in that, The non-display area includes a third edge and a fourth edge disposed opposite to each other along a second direction. The first direction and the second direction are perpendicular to each other. The third edge is disposed close to the second functional area. The second functional area has a third end and a fourth end formed along the second direction. The third end is disposed close to the third edge. In the second direction, the distance from the third edge to the second sub-non-display area is greater than or equal to the distance from the third edge to the fourth end.

9. The display panel according to claim 4, characterized in that, The non-display area also includes a binding area, which is located within the area of ​​the second sub-non-display area.

10. The display panel according to claim 4, characterized in that, The first sub-edge and the second sub-edge extend along the second direction, and the first direction and the second direction are perpendicular to each other.

11. The display panel according to claim 4, characterized in that, The first sub-edge and / or the second sub-edge are inclined relative to the second direction toward a direction away from the first functional area, and the first direction and the second direction are perpendicular to each other.

12. The display panel according to claim 4, characterized in that, The non-display area also includes a fourth sub-non-display area located on one side of the second edge, and the first sub-non-display area is positioned close to the second functional area relative to the fourth sub-non-display area.

13. The display panel according to claim 12, characterized in that, The non-display area also includes a fifth sub-non-display area located on one side of the second edge, wherein the width of the fourth sub-non-display area along the first direction is smaller than the width of the fifth sub-non-display area along the first direction.

14. The display panel according to claim 13, characterized in that, The display panel further includes a first chip, a second chip, and multiple signal lines extending along a first direction. The first chip is disposed in the second sub-non-display area, the second chip is disposed in the fifth sub-non-display area, some of the signal lines are connected to the first chip, and other parts of the signal lines are connected to the second chip.

15. The display panel according to claim 14, characterized in that, The multiple signal lines include a first power signal line, a second power signal line, and a data signal line. The first power signal line and the second power signal line are connected to the first chip, and the data signal line is connected to the second chip.

16. The display panel according to claim 1, characterized in that, The outline edge of the non-display area along the orthographic projection perpendicular to the display panel substrate is a step, and the first sub-edge and the second sub-edge are respectively partial edges of the step.

17. The display panel according to claim 16, characterized in that, The display panel has steps formed on the contour edges of its opposite ends along the second direction.

18. A display device, characterized in that, Includes the display panel according to any one of claims 1 to 17.

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