Display panel and display device

Abstract

Embodiments of the present application disclose a display panel and a display device, the display panel has a first area, a second area, a first bending area between the first area and the second area, and comprises a substrate and a functional layer on a second surface of the substrate, the substrate comprises a first groove provided on a first surface of the substrate, the first groove is provided correspondingly to the first bending area, the display panel in the first bending area is bent about a first bending axis, an extension direction of the first groove is parallel to an extension direction of the first bending axis, the first groove comprises a first side and a second side, the first side and the second side intersect on a side of the first groove close to the second surface, and in a first state, the first side and the second side are at least partially attached. By providing the first groove, the bending radius of the display panel in the first bending area is reduced, thereby reducing the frame width of the display panel and improving the screen-to-body ratio of the display panel.

Description

Technical Field

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

[0002] Currently, with the continuous development of display technology, increasing the screen-to-body ratio of display panels is a major development direction for display panels. However, the display panels of existing display devices (such as wearable display products) are mainly flat or slightly curved display panels, which have problems such as difficulty in reducing bezels, resulting in difficulty in improving the screen-to-body ratio.

[0003] Therefore, there is an urgent need for a display panel and display device to solve the above-mentioned technical problems. Summary of the Invention

[0004] This invention provides a display panel and display device that can alleviate the technical problem of difficulty in improving screen ratio caused by the difficulty in narrowing the bezel of current display panels.

[0005] This invention provides a display panel having a first area, a second area, and a first bending area located between the first area and the second area, the display panel comprising:

[0006] The substrate includes a first groove, which is disposed corresponding to the first bending region and is disposed on the first surface of the substrate.

[0007] A functional layer is located on the second surface of the substrate, with the first surface opposite to the second surface;

[0008] Wherein, the display panel in the first bending area is bent about the first bending axis, and the extension direction of the first groove is parallel to the extension direction of the first bending axis;

[0009] The first groove includes a first side and a second side, the first side and the second side intersect at the side of the first groove near the second surface, and in a first state, the first side and the second side are at least partially in contact.

[0010] Preferably, the display panel further includes a third area and a second bending area, the third area being located on the side of the first bending area closer to the second area, and the second bending area being located between the second area and the third area;

[0011] The substrate further includes a second groove, which is disposed corresponding to the second bending region and is disposed on the first surface;

[0012] Wherein, the display panel in the second bending area is bent about the second bending axis, and the extension direction of the second groove is parallel to the extension direction of the second bending axis;

[0013] The second groove includes a third side and a fourth side, the third side and the fourth side intersecting at the side of the second groove near the second surface.

[0014] Preferably, in the second state, the angle formed by the first side and the second side is less than or equal to 90 degrees; or,

[0015] The angle formed by the third side and the fourth side is less than or equal to 90 degrees.

[0016] Preferably, the first side and the second side are symmetrical about the first plane; or,

[0017] The third side and the fourth side are symmetrical about the second plane.

[0018] Preferably, in the second state, the first side is perpendicular to the second side, and the orthographic projection of the first groove onto the second surface covers the first bending area; or,

[0019] In the second state, the third side is perpendicular to the fourth side, and the orthographic projection of the second groove on the second surface covers the second bending area.

[0020] Preferably, the substrate further includes a third groove disposed on the first surface, the third groove being at least partially located within the first bend.

[0021] Preferably, the third groove is disposed on the side of the first groove away from the second surface. In the second state, the width of the orthographic projection of the third groove on the second surface is greater than or equal to the sum of the width of the first bending area, the width within the second bending area, and the width of the third area.

[0022] Preferably, the functional layer includes a first routing layer, the first routing layer includes a first routing trace, the first routing trace includes a plurality of through holes, and the through holes are located at least within the first bending area.

[0023] The present invention also provides a display device, the display device comprising a display panel as described above and a device body, wherein the display panel is rotatably fixed to the device body.

[0024] Preferably, the display device includes a functional component disposed on at least one side of the first area of ​​the display panel, and the functional component is disposed corresponding to a third recess of the display panel.

[0025] By setting the first groove, the present invention reduces the bending radius of the display panel in the first bending area, thereby reducing the bezel width of the display panel and increasing the screen ratio of the display panel. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the first structure of the display panel provided in an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the first structure of the display panel in the second state provided in an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the first structure of the display panel in the first state provided in an embodiment of the present invention;

[0030] Figure 4 This is a schematic diagram of the second structure of the display panel in the second state provided in an embodiment of the present invention;

[0031] Figure 5 This is a schematic diagram of the second structure of the display panel in the first state provided in an embodiment of the present invention;

[0032] Figure 6 This is a schematic diagram of the structure of the first trace of the display panel provided in an embodiment of the present invention;

[0033] Figure 7 This is a schematic diagram of the first structure of the display device provided in the embodiment of the present invention;

[0034] Figure 8 This is a schematic diagram of a second structure of the display device provided in an embodiment of the present invention;

[0035] Figure 9 This is a schematic diagram of a third structure of the display device provided in an embodiment of the present invention;

[0036] Figure 10 This is a schematic diagram of the fourth structure of the display device provided in the embodiments of the present invention;

[0037] Figure 11 This is a schematic diagram of the fifth structure of the display device provided in the embodiments of the present invention;

[0038] Figure 12 This is a schematic diagram of the sixth structure of the display device provided in the embodiments of the present invention;

[0039] Figure 13 This is a schematic diagram of the seventh structure of the display device provided in the embodiments of the present invention. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Furthermore, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present invention and are not intended to limit the present invention. In the present invention, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device. In the accompanying drawings, the thickness of layers, films, plates, regions, etc., may be enlarged for clarity and for better understanding and ease of description. It should be understood that when an element such as a layer, film, region, or substrate is referred to as "located on another element," it may be directly located on the other element or there may be inserted elements. It should be understood that although the terms “first,” “second,” etc., may be used in this invention to describe various components, these components should not be limited by these terms, which are used only to distinguish one component from another. The singular forms “a,” “an,” and “the” used herein are also intended to include the plural forms unless the context clearly indicates otherwise. It will also be understood that the terms “comprising” and / or “including” as used herein specify the presence of the said feature or component, but do not exclude the presence or addition of one or more other features or components. In the following examples, the x-axis, y-axis, and z-axis are not limited to the three axes of a Cartesian coordinate system and can be interpreted in a broader sense. The x-axis, y-axis, and z-axis may be perpendicular to each other, or may represent different directions that are not perpendicular to each other.

[0041] Currently, existing display devices suffer from technical challenges in reducing bezels and increasing screen-to-body ratio.

[0042] Please see Figures 1 to 6 This invention provides a display panel 100, which has a first region A1, a second region A2, and a first bending region BA1 located between the first region A1 and the second region A2. The display panel 100 includes:

[0043] The substrate 110 includes a first groove 101, which is correspondingly disposed to the first bending region BA1, and the first groove 101 is disposed on the first surface of the substrate 110.

[0044] Functional layer 120 is located on the second surface of the substrate 110, with the first surface opposite to the second surface;

[0045] Wherein, the display panel 100 in the first bending area BA1 is bent about the first bending axis, and the extension direction of the first groove 101 is parallel to the extension direction of the first bending axis.

[0046] The first groove 101 includes a first side 101a and a second side 101b. The first side 101a and the second side 101b intersect on the side of the first groove 101 near the second surface. In a first state, the first side 101a and the second side 101b are at least partially in contact.

[0047] By setting the first groove 101, the present invention reduces the bending radius of the display panel 100 in the first bending area BA1, thereby reducing the bezel width of the display panel 100 and increasing the screen ratio of the display panel 100.

[0048] The technical solution of the present invention will now be described in conjunction with specific embodiments.

[0049] Please see Figures 1 to 3 In this embodiment, the display panel 100 in the first area A1 has a display function for displaying images, and the first area A1 is the main display area of ​​the display panel 100. In the second state, the display panels 100 in the first area A1, the second area A2, and the first bending area BA1 are located in the same plane. The first area A1, the second area A2, and the first bending area BA1 of the display panel 100 extend in the first direction X. The first bending area BA1 is located between the first area A1 and the second area A2 in the second direction Y, which intersects the first direction X. In the first state, the display panel 100 in the first bending area BA1 is bent about a first bending axis. The extension direction of the first bending axis is parallel to the first direction X. At this time, the substrate 110 and the functional layer 120 in the first bending area BA1 are both bent about the first bending axis, so that the display panel 100 in the second area A2 is bent to the back side of the display panel 100 in the first area A1.

[0050] In some embodiments, the display panel 100 has a first region A1, at least one second region A2, and at least one first bending region BA1. For example, in the second state, along the second direction Y, the display panel 100 has the first region A1, the first bending region BA1, and the second region A2 sequentially connected. Alternatively, in the second state, along the second direction Y, the display panel 100 has the second region A2, the first bending region BA1, the first region A1, the first bending region BA1, and the second region A2 sequentially connected; that is, in this case, the display panel 100 includes two first bending regions BA1 located on opposite sides of the first region A1, and two second regions A2.

[0051] Please see Figures 1 to 5 In some embodiments, the display panel 100 further includes a third region A3 and a second bending region BA2. The third region A3 is located on the side of the first bending region BA1 near the second region A2, and the second bending region BA2 is located between the second region A2 and the third region A3. In the first state, the display panel 100 within the second bending region BA2 is bent about a second bending axis, the extension direction of which is parallel to the first direction X. The substrate 110 and the functional layer 120 within the second bending region BA2 are both bent about the second bending axis, so that the display panel 100 is bent about the first bending axis and the second bending axis, causing the display panel 100 within the second region A2 to bend to the back side of the display panel 100 within the first region A1. At this time, the display panel 100 has one first region A1, at least one second region A2, at least one first bending region BA1, at least one third region A3, and at least one second bending region BA2. For example, in the second state, along the second direction Y, the display panel 100 has a first area A1, a first bending area BA1, a third area A3, a second bending area BA2, and a second area A2 that are sequentially connected. Alternatively, in the second state, along the second direction Y, the display panel 100 has a second area A2, a second bending area BA2, a third area A3, a first bending area BA1, a first area A1, a first bending area BA1, a third area A3, a second bending area BA2, and a second area A2 that are sequentially connected; that is, the display panel 100 has two of each of the first bending area BA1, the third area A3, the second bending area BA2, and the second area A2, and they are located on opposite sides of the first area A1, respectively.

[0052] The first groove 101 is disposed on the first surface of the substrate 110, the second surface is opposite to the first surface, and the functional layer 120 is located on the side of the second surface away from the first surface.

[0053] The extension direction of the first groove 101 is parallel to the extension direction of the first bending axis, that is, the extension direction of the first groove 101 is parallel to the first direction X. In some embodiments, the first groove 101 extends through the substrate 110 in the extension direction of the first groove 101 to reduce the unevenness of the bending stress of the display panel 100 in the extension direction of the first groove 101, so as to facilitate the good bending of the display panel 100 in the first bending region BA1.

[0054] Please see Figures 2 to 5 The first groove 101 is correspondingly disposed to the first bending area BA1. The first groove 101 includes a first side surface 101a and a second side surface 101b, which intersect at the side of the first groove 101 near the second surface. In some embodiments, the first groove 101 and the first bending area BA1 are configured in a one-to-one correspondence, that is, one first bending area BA1 is corresponding to one first groove 101. By configuring the first groove 101 and the first bending area BA1 in a one-to-one correspondence, it is beneficial to control the bending degree of the first bending area BA1 by controlling the angle formed by the intersecting first side surface 101a and second side surface 101b, thereby obtaining a display panel 100 with a preset bending radius. In some embodiments, the orthographic projection of the first groove 101 on the second surface is located within the first bending area BA1; or, the orthographic projection of the first groove 101 on the second surface covers the first bending area BA1.

[0055] In some embodiments, a first intersection line is formed at the intersection of the first side surface 101a and the second side surface 101b. The first intersection line is parallel to the extending direction of the first groove 101. At this time, the included angle formed by the first side surface 101a and the second side surface 101b is the face-to-face angle between the first side surface 101a and the second side surface 101b.

[0056] In some embodiments, a first intersecting arc surface is formed at the intersection of the first side surface 101a and the second side surface 101b. The first intersecting arc surface protrudes from the second surface. In this case, the first intersecting arc surface has a first end connected to other parts of the first side surface 101a and a second end connected to other parts of the second side surface 101b. The included angle between the first side surface 101a and the second side surface 101b is the included angle between a first tangent line of the first intersecting arc surface passing through the first end and a second tangent line of the first intersecting arc surface passing through the second end.

[0057] In some embodiments, the first groove 101 is formed by the intersection of the first side surface 101a and the second side surface 101b.

[0058] Please see Figure 4 In some embodiments, in the second state, the first side 101a and the second side 101b are symmetrical about a first plane, the first plane being perpendicular to the second surface and parallel to the extension direction of the first groove 101, and the intersection of the first side 101a and the second side 101b lies within the first plane. At this time, the width of the orthographic projection of the first side 101a onto the second surface is equal to the width of the orthographic projection of the second side 101b onto the second surface. By symmetrically arranging the first side 101a and the second side 101b, when the display panel 100 within the first bending area BA1 is bent, it facilitates complete contact between the first side 101a and the second side 101b, thereby reducing the bending radius of the display panel 100 within the first bending area BA1 and improving the product quality of the display panel 100.

[0059] In some embodiments, in the second state, the angle formed by the first side 101a and the second side 101b is less than or equal to 90 degrees. This helps to control the degree of bending of the display panel 100 within the first bending area BA1 when the first side 101a and the second side 101b are in contact, thus preventing excessive bending of the display panel 100 within the first bending area BA1, which could lead to breakage of the film layer in the panel. Preferably, in the second state, the angle formed by the first side 101a and the second side 101b is equal to 90 degrees. When the display panel 100 is composed of the first area A1, the second area A2, and the first bending area BA1, in the second state, the angle formed by the first side 101a and the second side 101b is equal to 90 degrees. Therefore, when the display panel 100 is in the first state, the end of the display panel 100 in the first bending area BA1 closest to the first area A1 is perpendicular to the plane containing the display panel 100 in the first area A1, which helps to reduce the bezel of the display panel 100. When the display panel 100 is composed of the first area A1, the second area A2, the first bending area BA1, the third area A3, and the second bending area BA2, in the second state, the angle formed by the first side 101a and the second side 101b is equal to 90 degrees. Therefore, when the display panel 100 is in the first state, the end of the display panel 100 in the third area A3 closest to the first bending area BA1 is perpendicular to the plane containing the display panel 100 in the first area A1, which also helps to reduce the bezel of the display panel 100.

[0060] Please see Figure 4 In some embodiments, in the second state, when the first side 101a and the second side 101b are symmetrical about the first plane and the first side 101a and the second side 101b are perpendicular, the orthographic projection of the first groove 101 on the second surface covers the first bending area BA1. At this time, the orthographic projection of the first groove 101 on the second surface overlaps with the first bending area BA1, and the area of ​​the first bending area BA1 is minimized, which is beneficial to further reduce the bezel of the display panel 100.

[0061] Please see Figures 2 to 5In some embodiments, the substrate 110 further includes a second groove 102 disposed on the first surface, the second groove 102 extending parallel to the extending direction of the second bending axis. In some embodiments, the second groove 102 extends through the substrate 110 in its extending direction to reduce the unevenness of bending stress on the display panel 100 in the extending direction of the second groove 102, thereby facilitating good bending of the display panel 100 within the second bending region BA2.

[0062] In some embodiments, the second groove 102 is correspondingly disposed with the second bending area BA2. The second groove 102 includes a third side surface 102a and a fourth side surface 102b, which intersect at the side of the second groove 102 near the second surface. In a first state, the third side surface 102a and the fourth side surface 102b are at least partially in contact. In some embodiments, the second groove 102 and the second bending area BA2 are configured in a one-to-one correspondence, that is, one second bending area BA2 is corresponding to one second groove 102. By configuring the second groove 102 and the second bending area BA2 in a one-to-one correspondence, it is advantageous to control the degree of bending of the second bending area BA2 by controlling the angle formed by the intersecting third side surface 102a and the fourth side surface 102b, thereby obtaining a display panel 100 with a preset bending radius. In some embodiments, the orthographic projection of the second groove 102 on the second surface is located within the second bending area BA2; or, the orthographic projection of the second groove 102 on the second surface covers the second bending area BA2.

[0063] In some embodiments, a second intersection line is formed at the intersection of the third side surface 102a and the fourth side surface 102b. The second intersection line is parallel to the extending direction of the second groove 102. In this case, the included angle formed by the third side surface 102a and the fourth side surface 102b is the face-to-face angle between the third side surface 102a and the fourth side surface 102b.

[0064] In some embodiments, a second intersecting arc surface is formed at the intersection of the third side surface 102a and the fourth side surface 102b. The second intersecting arc surface protrudes from the second surface. In this case, the second intersecting arc surface has a third end connected to other parts of the third side surface 102a and a fourth end connected to other parts of the fourth side surface 102b. The included angle between the third side surface 102a and the fourth side surface 102b is the included angle between the third tangent line of the second intersecting arc surface passing through the third end and the fourth tangent line of the second intersecting arc surface passing through the fourth end.

[0065] In some embodiments, the second groove 102 is formed by the intersection of the third side surface 102a and the fourth side surface 102b.

[0066] In some embodiments, in the second state, the third side 102a and the fourth side 102b are symmetrical about a second plane, which is perpendicular to the second surface and parallel to the extension direction of the second groove 102. The intersection of the third side 102a and the fourth side 102b lies within the second plane. At this time, the width of the orthographic projection of the third side 102a onto the second surface is equal to the width of the orthographic projection of the fourth side 102b onto the second surface. By symmetrically arranging the third side 102a and the fourth side 102b, when the display panel 100 within the second bending area BA2 is bent, it facilitates complete contact between the third side 102a and the fourth side 102b, thereby reducing the bending radius of the display panel 100 within the second bending area BA2 and improving the product quality of the display panel 100.

[0067] Please see Figure 4 In some embodiments, in the second state, the third side 102a and the fourth side 102b are symmetrical about a second plane, which is perpendicular to the second surface and parallel to the extension direction of the second groove 102. The intersection of the third side 102a and the fourth side 102b lies within the second plane. At this time, the width of the orthographic projection of the third side 102a onto the second surface is equal to the width of the orthographic projection of the fourth side 102b onto the second surface. By symmetrically arranging the third side 102a and the fourth side 102b, when the display panel 100 within the second bending area BA2 is bent, it facilitates complete contact between the third side 102a and the fourth side 102b, thereby reducing the bending radius of the display panel 100 within the second bending area BA2 in the first state while improving the product quality of the display panel 100.

[0068] In some embodiments, in the second state, the angle formed by the third side 102a and the fourth side 102b is less than or equal to 90 degrees. This helps control the degree of bending of the display panel 100 within the second bending area BA2 when the third side 102a and the fourth side 102b are in contact, thus preventing excessive bending of the display panel 100 within the second bending area BA2, which could lead to breakage of the film layer in the panel. Preferably, in the second state, the angle formed by the third side 102a and the fourth side 102b is equal to 90 degrees. When the display panel 100 is composed of the first area A1, the second area A2, the first bending area BA1, the third area A3, and the second bending area BA2, in the second state, the angle formed by the third side 102a and the fourth side 102b is equal to 90 degrees. Then, when the display panel 100 is in the first state, the end of the display panel 100 in the third area A3 that is close to the second bending area BA2 is perpendicular to the plane where the display panel 100 in the first area A1 is located, which helps to reduce the bezel of the display panel 100.

[0069] In the second state, when the angle formed by the first side 101a and the second side 101b is 90 degrees, and the angle formed by the third side 102a and the fourth side 102b is 90 degrees, when the display panel 100 is in the first state, the display panel 100 in the third area A3 is perpendicular to the plane where the display panel 100 in the first area A1 is located, which helps to further reduce the bezel of the display panel 100. At this time, the display panels 100 in the first area A1 and the third area A3 can all have display functions, which helps to further reduce the bezel width of the display panel 100 in the second direction Y and improve the screen ratio of the display panel 100; or, the display panels 100 in the first area A1, the third area A3 and the second bending area BA2 can all have display functions and can be used for image display, which helps to remove the bezel of the display panel 100 in the second direction Y and further improve the screen ratio of the display panel 100.

[0070] Please see Figure 4In some embodiments, in the second state, when the third side 102a and the fourth side 102b are symmetrical about the second plane and the third side 102a and the fourth side 102b are perpendicular, the orthographic projection of the second groove 102 on the second surface covers the second bending area BA2. At this time, the orthographic projection of the second groove 102 on the second surface overlaps with the second bending area BA2, and the area of ​​the second bending area BA2 is minimized, which is beneficial to further reduce the bezel of the display panel 100.

[0071] Please see Figures 2 to 5 In some embodiments, the substrate 110 further includes a third groove 103 disposed on the first surface, the third groove 103 being at least partially located within the first bend. When the display panel 100 has one first bend area BA1, the third groove 103 can be one; when the display panel 100 has two first bend areas BA1, the third groove 103 can be one or two, wherein one third groove 103 is at least partially located within either first bend area BA1, or the two third grooves 103 are each at least partially located within one first bend area BA1. When the display panel 100 includes only the first area A1, the first bending area BA1, and the second area A2 along the second direction Y, the third groove 103 is located within the first bending area BA1 and the second area A2. When the display panel 100 includes only the first area A1, the first bending area BA1, the third area A3, the second bending area BA2, and the second area A2 along the second direction Y, the third groove 103 is located within the first bending area BA1, the third area A3, and the second bending area BA2. The third groove 103 is used to accommodate a functional device, such as a camera. When the functional device is a camera, in the first state, the area of ​​the orthographic projection of the third groove 103 onto the second surface is larger than the area of ​​the orthographic projection of the side of the camera closer to the third area A3 onto the second surface, so as to avoid affecting the normal operation of the camera. For example, when the outer diameter of the camera is 3.5 mm, the length and width of the orthographic projection of the third groove 103 onto the second surface are both greater than 3.5 mm.

[0072] In some embodiments, the third groove 103 communicates with the first groove 101, and / or the third groove 103 communicates with the second groove 102. The third groove 103 is disposed on the side of the first groove 101 away from the second surface. When the display panel 100 includes only the first area A1, the first bending area BA1, and the second area A2 in the second direction Y, in the second state, the width of the orthographic projection of the third groove 103 on the second surface is greater than or equal to the width of the first bending area BA1; when the display panel 100 includes only the first area A1, the first bending area BA1, the third area A3, the second bending area BA2, and the second area A2 in the second direction Y, in the second state, the width of the orthographic projection of the third groove 103 on the second surface is greater than or equal to the sum of the width within the first bending area BA1, the width of the second bending area BA2, and the width of the third area A3.

[0073] When in the second state, the angle formed by the first side 101a and the second side 101b is equal to 90 degrees, and the angle formed by the third side 102a and the fourth side 102b is equal to 90 degrees, when the display panel 100 is in the first state, the display panel 100 in the third area A3 is perpendicular to the plane where the display panel 100 in the first area A1 is located. This is beneficial for the display panel 100 in the third area A3 to be parallel to the side of the functional device (such as a camera) accommodated by the third groove 103 that is close to the third groove 103, thus avoiding the functional device being affected (such as the optical imaging effect of the camera being interfered with).

[0074] In the first state, the area covered by the orthographic projection of the functional device on the display panel 100 in the third region A3 can be used for image display, or it can be not used for image display.

[0075] In some embodiments, the sum of the depths of the first groove 101 and the third groove 103 is less than the thickness of the substrate 110; or, the sum of the depths of the second groove 102 and the third groove 103 is less than the thickness of the substrate 110. For example, when the thickness of the substrate 110 is 20 micrometers, the sum of the depths of the first groove 101 and the third groove 103 is less than 20 micrometers; or, the sum of the depths of the second groove 102 and the third groove 103 is less than 20 micrometers.

[0076] The substrate 110 may include various materials with flexible or bendable properties, such as polymer resins like polyimide, polyethersulfone, polyacrylate, polyetherimide, polyethylene naphthalate, polyethylene terephthalate, polyarylate, and polycarbonate. The substrate 110 may be a single layer or multiple layers. In some embodiments, the substrate 110 may include a first sub-substrate, an intermediate barrier layer, an adhesive layer, and a second sub-substrate. The intermediate barrier layer and the adhesive layer are located between the first sub-substrate and the second sub-substrate. The first sub-substrate and the second sub-substrate may be formed of the same material, such as polyimide. The intermediate barrier layer may be formed of at least one of silicon nitride or silicon oxide. The adhesive layer may be formed of hydrogenated amorphous silicon.

[0077] The first groove 101, the second groove 102, or the third groove 103 can be formed by coating a flexible material onto a patterned carrier plate to form the substrate 110.

[0078] The functional layer 120 may include a buffer layer, a thin film transistor layer, a planarization layer, a light-emitting element layer, and a pixel definition layer.

[0079] The buffer layer may include one or more sublayers comprising inorganic materials, such as silicon oxide or silicon nitride. The buffer layer serves to planarize the second surface of the substrate 110 and prevent impurities or moisture from penetrating from the substrate 110 into the light-emitting element layer. The buffer layer may be in direct contact with the second surface of the substrate 110, that is, the buffer layer may be directly formed on the second surface of the substrate 110.

[0080] The thin-film transistor layer is located on the side of the buffer layer away from the substrate 110.

[0081] In some embodiments, the thin-film transistor includes a semiconductor located on the side of the buffer layer away from the substrate 110, the semiconductor being in direct contact with the buffer layer, the semiconductor being formed of polysilicon, and the semiconductor being divided into a channel portion and source and drain portions located on both sides of the channel portion. The channel portion is polysilicon without conductive material doping, i.e., an intrinsic semiconductor; the drain and source portions are polysilicon doped with conductive material; the conductive material doped in the source and drain portions can be a P-type conductive material or an N-type conductive material.

[0082] The thin-film transistor layer further includes a first gate insulating layer located on the side of the semiconductor away from the substrate 110, the first gate insulating layer being able to directly contact the buffer layer and the semiconductor. The first gate insulating layer can be a single layer or multiple layers formed of inorganic materials, and the material of the first gate insulating layer can be selected from at least one of tetraethyl orthosilicate (TEOS), silicon nitride, and silicon oxide.

[0083] The thin-film transistor further includes a first gate located on the side of the first gate insulating layer away from the substrate 110, wherein the orthographic projection of the first gate on the substrate 110 overlaps with the orthographic projection of the channel portion on the substrate 110. The first gate may be a single layer or multiple layers comprising a low-resistance conductive material, and the material of the first gate may include at least one of Al, Ti, Mo, Cu, Ni, or alloys thereof.

[0084] The thin-film transistor layer further includes an interlayer insulating layer located on the side of the first gate away from the substrate 110. The interlayer insulating layer can be a single layer or multiple layers formed of inorganic materials, and the interlayer insulating layer can be selected from at least one of tetraethyl orthosilicate (TEOS), silicon nitride, and silicon oxide.

[0085] In some embodiments, the thin-film transistor layer further includes a second gate insulating layer and a second gate located between the first gate and the interlayer insulating layer. The second gate insulating layer is in direct contact with both the first gate and the first gate insulating layer. The second gate insulating layer can be a single layer or multiple layers formed of inorganic materials. The material of the first gate insulating layer can be selected from at least one of tetraethyl orthosilicate (TEOS), silicon nitride, and silicon oxide. The second gate is located between the second gate insulating layer and the interlayer insulating layer and is in direct contact with both. The orthographic projection of the second gate on the substrate 110 overlaps with the orthographic projection of the first gate on the substrate 110. The second gate can be a single layer or multiple layers comprising a low-resistance conductive material. The material of the second gate can include at least one of Al, Ti, Mo, Cu, Ni, or alloys thereof.

[0086] The thin-film transistor layer further includes a source and a drain, which are disposed on the same layer of the interlayer insulating layer away from the substrate 110. The source is connected to the source portion through a source contact hole, and the drain is connected to the drain portion through a drain contact hole. The source contact hole and the drain contact hole penetrate the interlayer insulating layer and the first gate insulating layer; or, the source contact hole and the drain contact hole penetrate the interlayer insulating layer, the first gate insulating layer, and the second gate insulating layer. The source and the drain can be a single layer or multiple layers of a conductive material with low resistance. The source and the drain can include at least one of Al, Ti, Mo, Cu, Ni, or alloys thereof. For example, the source or the drain can be a triple-overlapping structure of Ti / Cu / Ti, Ti / Ag / Ti, Ti / Al / Ti, or Mo / Al / Mo.

[0087] Please see Figure 2 , Figure 4 and Figure 6The source and drain are disposed on the same layer of the first wiring layer 121. The first wiring layer 121 includes a first wiring 122 located within the first bending region BA1. The first wiring 122 is used to provide signals from the IC (Integrated Circuit) to the display panel 100 within the first region BA1. The first wiring 122 includes a plurality of vias 123, which penetrate the first wiring 122. The vias 123 are located at least within the first bending region BA1. The presence of the vias 123 facilitates the deformation of the first wiring 122 within the first bending region BA1 through the vias 123 when the display panel 100 within the first bending region BA1 is bent along the first bending axis. This releases stress, prevents the first wiring 122 from breaking, and improves the product quality of the display panel 100. Furthermore, the via 123 avoids the problem that the bending radius is difficult to further reduce when bending in the first bending area BA1, which is necessary to prevent the metal trace in the bending area from breaking. This helps to further reduce the bending radius of the first bending area BA1. In some embodiments, the first trace 122 located in the second bending area BA2 is at least used to provide signals from the IC (Integrated Circuit) to the display panel 100 in the first area A1 and the display panel 100 in the third area A3. The via 123 is also located in the second bending area BA2. The first trace 122 in the second bending area BA2 deforms through the via 123, thereby releasing stress, preventing the first trace 122 from breaking, and improving the product quality of the display panel 100. In some embodiments, in the second state, the via 123 is continuously arranged along the first direction X, and / or, the via 123 is continuously arranged along the second direction Y.

[0088] The planarization layer is located on the side of the thin-film transistor layer away from the substrate 110, and the planarization layer is located on the side of the source and drain away from the substrate 110. The planarization layer includes vias that expose the drain, and the material of the planarization layer may be selected from organic insulating materials.

[0089] In some embodiments, the display panel 100 further includes a filling layer located within the through hole 123. The filling layer may be integrally disposed with the planarization layer, which facilitates stress relief of the through hole 123 while saving manufacturing processes.

[0090] In some embodiments, when the display panel 100 within the first bending region BA1 is not used for displaying images, the display panel 100 further includes a first opening located within the first bending region BA1. The first opening penetrates the film layer between the substrate 110 and the first wiring layer 121 within the first bending region BA1, and organic material is filled in the first opening to enhance the bending performance of the display panel 100.

[0091] In some embodiments, when the display panel 100 has the second bending region BA2, the display panel 100 further includes a second opening located within the second bending region BA2. The second opening penetrates the film layer between the substrate 110 and the first wiring layer 121 within the second bending region BA2, and an organic material is filled in the second opening to enhance the bending performance of the display panel 100.

[0092] The light-emitting element layer includes an anode, which is electrically connected to the drain through the via. The anode is located on the side of the planarization layer away from the substrate 110 and can be in direct contact with the planarization layer. The anode can be made of a transparent and / or reflective conductive material, such as magnesium (Mg), silver (Ag), gold (Au), calcium (Ca), lithium (Li), chromium (Cr), aluminum (Al), or alloys thereof, indium tin oxide, indium zinc oxide, zinc oxide, or indium oxide. For example, the anode can be a three-layer stacked structure composed of indium tin oxide / silver / indium tin oxide or indium zinc oxide / silver / indium zinc oxide.

[0093] The pixel definition layer is located on the side of the planarization layer away from the substrate 110. The pixel definition layer includes a pixel definition opening and a pixel definition portion surrounding the pixel definition opening. The pixel definition opening exposes a portion of the anode. The pixel definition layer may be formed of a resin-based material, such as polyacrylate, polyimide, etc.

[0094] The light-emitting element layer further includes a light-emitting layer located within the pixel definition opening. The light-emitting layer may include a hole injection layer, a hole transport layer, an emission material layer, an electron transport layer, and an electron transport layer stacked along a direction away from the substrate 110.

[0095] The light-emitting element layer also includes a cathode, which is located on the side of the light-emitting layer away from the substrate 110. The cathode, the light-emitting layer, and the anode constitute a light-emitting element.

[0096] In some embodiments, the display panel 100 further includes an encapsulation layer comprising alternating layers of one or more organic layers and one or more inorganic layers. The organic layers may be made of at least one material selected from polyethylene terephthalate, polyimide, polycarbonate, epoxy resin, polyethylene, and polyacrylate. The inorganic layers may be made of at least one material selected from silicon nitride, silicon oxide, aluminum oxide, and titanium oxide.

[0097] In some embodiments, the encapsulation layer may sequentially include a first inorganic layer, a first organic layer, and a second inorganic layer located on the cathode; or, the encapsulation layer may sequentially include a first inorganic layer, a first organic layer, a second inorganic layer, a second organic layer, and a third inorganic layer located on the cathode; or, the encapsulation layer may sequentially include a first inorganic layer, a first organic layer, a second inorganic layer, a second organic layer, a third inorganic layer, a third organic layer, and a fourth inorganic layer located on the cathode.

[0098] In some embodiments, the display panel 100 further includes a touch layer, which may include a plurality of touch electrodes and a plurality of touch traces. The touch electrodes may be arranged in the same layer or in different layers, and the touch traces may be arranged in the same layer or in different layers.

[0099] The display panel 100 provided in this embodiment of the invention reduces the bending radius of the display panel 100 within the first bending area BA1 by setting the first groove 101, thereby reducing the bezel width of the display panel 100 and increasing the screen ratio of the display panel 100.

[0100] Please see Figures 7 to 13 The present invention also provides a display device 10, including a display panel 100 and a device body 200 as described above, wherein the display panel 100 is rotatably fixed to the device body 200.

[0101] For the specific structure of the display panel 100, please refer to any of the above-mentioned embodiments and accompanying drawings of the display panel, which will not be repeated here.

[0102] In some embodiments, the display device 10 may be a wearable display device, such as a watch.

[0103] Please see Figures 7 to 13When the display device 10 is a watch, the main body 200 includes a dial 230 and a first strap 210 and a second strap 220 connected to opposite sides of the dial 230. The display panel 100 is rotatably fixed to the dial 230, and the rotation direction of the display panel 100 is parallel to the plane where the display panel 100 is located in the first area A1. The first strap 210 includes a buckle 211, and the second strap 220 includes a buckle groove 221. The first strap 210 and the second strap 220 are engaged with each other through the buckle 211 and the buckle groove 221 to fix them to the user's wrist.

[0104] Please see Figure 8 In some embodiments, the dial 230 is integrally formed with the first watch strap 210 and the second watch strap 220. The plane on which the display panel 100 is located in the first area A1 is parallel to the plane on which the dial 230 is located, and the display panel 100 in the first area A1 displays the image on the side away from the dial 230.

[0105] Please see Figure 7 , Figure 9 and Figures 12 to 13 When the display panel 100 includes the third area A3 and the second bending area BA2, the side of the display panel 100 in the third area A3 that is away from the dial 230 displays the image. In some embodiments, the display panel 100 in the first bending area BA1 can also be used for image display, and the side of the display panel 100 in the first bending area BA1 that is away from the dial 230 displays the image. When the display panel 100 in the third zone A3 displays an image, the images displayed by the display panel 100 in the first zone A1, the display panel 100 in the first bending zone BA1, and the display panel 100 in the third zone A3 can be continuous; or, the display panels 100 in the first zone A1 and the display panels 100 in the third zone A3 can be independent, in which case the display panel 100 in the first bending zone BA1 may not participate in the display; or, the display panel 100 in the first bending zone BA1 can be continuous with the display panel 100 in the first zone A1; or, the display panel 100 in the first bending zone BA1 can be continuous with the display panel 100 in the third zone A3.

[0106] The display panel 100 is rotatably fixed to the dial 230 via a pivot. The first end of the pivot is connected to the dial 230, and the second end of the pivot is connected to the display panel 100. The first end of the pivot is connected to the geometric center of the dial 230, and the second end of the pivot is connected to the geometric center of the display panel 100 within the first area A1.

[0107] The first end of the rotating shaft is rotatably connected to the side of the dial 230 near the display panel 100, and the second end of the rotating shaft is fixedly connected to the side of the display panel 100 near the dial 230. When the display panel 100 rotates relative to the dial 230, the rotating shaft also rotates relative to the dial 230.

[0108] Alternatively, the first end of the rotating shaft is fixedly connected to the side of the dial 230 near the display panel 100, and the second end of the rotating shaft is rotatably connected to the side of the display panel 100 near the dial 230. When the display panel 100 rotates relative to the dial 230, the rotating shaft does not rotate relative to the dial 230.

[0109] Please see Figure 3 and Figure 5 In some embodiments, the display device 10 includes a functional device 104 disposed on at least one side of the first area A1 of the display panel 100, and the functional device 104 is correspondingly disposed with respect to the third recess 103 of the display panel 100.

[0110] The first area A1 of the display panel 100 includes a first side and a second side, and a third side and a fourth side, which are opposite to each other, and the third side and the fourth side are connected between the first side and the second side.

[0111] The functional device 104 can be a camera. When the display device 10 is in a non-functional state, for example, when the display device 10 is in a state where it does not need to use the functional device 104, such as when it is not recording or taking pictures, the display panel 100 does not need to be rotated to adjust to a suitable position. At this time, the first side of the first area A1 is close to the first strap 210, and the second side of the first area A1 is close to the second strap 220.

[0112] Please see Figure 3 and Figure 5The display device 10 may include a functional device 104, which is disposed on either side of the first area A1 of the display panel 100. The functional device 104 is correspondingly disposed with one third groove 103 in the display panel 100. When the display device 10 is in a functional state, the functional device 104 can be moved to a target position to realize its function by rotating the display panel 100 to a certain angle (e.g., 45 degrees, 90 degrees, 180 degrees, 360 degrees, etc.).

[0113] The display device 10 includes two functional components 104, which are respectively disposed on opposite sides of the first area A1 of the display panel 100. The functional components 104 are correspondingly disposed with two third recesses 103 of the display panel 100. The two functional components 104 can be located on the first side and the second side of the first area A1, or they can be located on the third side and the fourth side of the first area A1, respectively. When the display device 10 is in a functional state, the functional components 104 can be moved to a target position to achieve their function by rotating the display panel 100 to a certain angle (e.g., 45 degrees, 90 degrees, etc.). Because the two functional components 104 are respectively located on opposite sides of the first area A1 of the display panel 100, the rotation angle of the display panel 100 can be reduced while moving the functional components 104 to the target position to achieve their function. For example, when the functional device 104 is a camera, four-sided surround camera can be achieved simply by rotating the display panel 100 90 degrees clockwise or counterclockwise.

[0114] The display device 10 provided in this embodiment of the invention reduces the bending radius of the display panel 100 in the first bending area BA1 by setting the first groove 101, thereby reducing the bezel width of the display panel 100 and increasing the screen ratio of the display panel 100.

[0115] This invention discloses a display panel and a display device. The display panel has a first region, a second region, and a first bending region located between the first region and the second region. It also includes a substrate and a functional layer located on the second surface of the substrate. The substrate includes a first groove disposed on the first surface of the substrate. The first groove is correspondingly disposed with respect to the first bending region. The display panel in the first bending region is bent about a first bending axis. The extension direction of the first groove is parallel to the extension direction of the first bending axis. The first groove includes a first side and a second side. The first side and the second side intersect at the side of the first groove near the second surface. In a first state, the first side and the second side are at least partially in contact. By setting the first groove, this invention reduces the bending radius of the display panel in the first bending region, thereby reducing the bezel width of the display panel and increasing the screen-to-body ratio of the display panel.

[0116] 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 method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A display panel, characterized in that, The display panel has a first area, a second area, and a first bent area located between the first area and the second area. The display panel includes: The substrate includes a first groove, which is disposed corresponding to the first bending region and is disposed on the first surface of the substrate. A functional layer is located on the second surface of the substrate, with the first surface opposite to the second surface; Wherein, the display panel in the first bending area is bent about the first bending axis, and the extension direction of the first groove is parallel to the extension direction of the first bending axis; The first groove includes a first side and a second side, the first side and the second side intersect at the side of the first groove near the second surface, and in a first state, the first side and the second side are at least partially in contact; The display panel further includes a third region and a second bending region. The third region is located on the side of the first bending region closer to the second region, and the second bending region is located between the second region and the third region. The substrate further includes a second groove, which is correspondingly disposed to the second bending region and is disposed on the first surface. The substrate further includes a third groove disposed on the first surface. The third groove is at least partially located within the first bending region and is disposed on the side of the first groove away from the second surface. In a second state, the width of the orthographic projection of the third groove onto the second surface is greater than or equal to the sum of the width of the first bending region, the width within the second bending region, and the width of the third region.

2. The display panel according to claim 1, characterized in that, in, The display panel within the second bending area is bent about the second bending axis, and the extension direction of the second groove is parallel to the extension direction of the second bending axis; The second groove includes a third side and a fourth side, the third side and the fourth side intersecting at the side of the second groove near the second surface, and in a first state, the third side and the fourth side are at least partially in contact.

3. The display panel according to claim 2, characterized in that, In the second state, the angle formed by the first side and the second side is less than or equal to 90 degrees; or, The angle formed by the third side and the fourth side is less than or equal to 90 degrees.

4. The display panel according to claim 3, characterized in that, The first side and the second side are symmetrical about the first plane; or, The third side and the fourth side are symmetrical about the second plane.

5. The display panel according to claim 4, characterized in that, In the second state, the first side is perpendicular to the second side, and the orthographic projection of the first groove on the second surface covers the first bending area; or... In the second state, the third side is perpendicular to the fourth side, and the orthographic projection of the second groove on the second surface covers the second bending area.

6. The display panel according to claim 1, characterized in that, The functional layer includes a first routing layer, the first routing layer includes a first routing trace, the first routing trace includes a plurality of through holes, and the through holes are located at least within the first bending area.

7. A display device, characterized in that, The display device includes a display panel and a device body as described in any one of claims 1 to 6, wherein the display panel is rotatably fixed to the device body.

8. The display device according to claim 7, characterized in that, The display device includes a functional component, which is disposed on at least one side of the first area of ​​the display panel and is correspondingly disposed with respect to the third recess of the display panel.

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