Cover plate and display device

Abstract

A cover plate (6) and a display device. The cover plate (6) comprises a main body portion (61) and an edge portion (62), wherein the main body portion (61) is provided with a main body inner surface (611) and a main body outer surface (612); the edge portion (62) is connected to the periphery of the main body portion (61), and is provided with an edge inner surface (621) and an edge outer surface (622), the edge inner surface (621) being closer to a display module (100) than the edge outer surface (622); and the roughness of at least part of the edge inner surface (621) is greater than the roughness of the main body inner surface (611), and / or the roughness of at least part of the edge outer surface (622) is greater than the roughness of the main body outer surface (612). The cover plate (6) can reduce the light leakage rate.

Description

Cover and display device Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a cover plate and a display device. Background Art

[0002] With the continuous development of intelligent technology, electronic products such as smartphones, smart wearable devices (smart watches, smart bracelets, smart glasses), and tablets have become widely used. In particular, smart wearable devices are widely used in various fields such as sports, medical care, and communications. They also improve people's quality of life and work efficiency by adding functions such as calls, message prompts, and activity monitoring. These display devices are equipped with a cover plate on the light-emitting surface of the display module to protect the display module. The cover plate is made of a transparent material.

[0003] However, light leakage often occurs at the edge of the cover during use, which causes a halo to appear around the outer periphery of the cover to the naked eye, thus affecting the display effect and user experience.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute prior art known to ordinary technicians in the field.

[0005] Summary of the Invention

[0006] The purpose of the present disclosure is to overcome the above-mentioned deficiencies of the prior art and to provide a cover plate and a display device.

[0007] According to one aspect of the present disclosure, there is provided a cover plate, comprising:

[0008] A main body portion having a main body inner surface and a main body outer surface;

[0009] An edge portion is connected to the periphery of the main body portion, the edge portion having an edge inner surface and an edge outer surface, the edge inner surface is closer to the display module than the edge outer surface; the roughness of at least part of the edge inner surface is greater than the roughness of the main body inner surface, and / or the roughness of at least part of the edge outer surface is greater than the roughness of the main body outer surface.

[0010] In an exemplary embodiment of the present disclosure, the edge portion is bent toward a side of the main body where the display module is provided, so that at least a portion of the edge portion is provided with a curved structure.

[0011] In an exemplary embodiment of the present disclosure, the edge outer surface comprises:

[0012] a first connecting surface connected to the main body, wherein the first connecting surface is configured as an arc surface convex toward a side away from the inner surface of the edge;

[0013] a second connecting surface connected to a side of the first connecting surface away from the main body, the second connecting surface being configured as an arc surface convex toward a side away from the inner surface of the edge;

[0014] a third connecting surface connected to a side of the second connecting surface away from the first connecting surface, wherein the third connecting surface is configured as a cylindrical surface;

[0015] The fourth connecting surface is connected to the side of the third connecting surface away from the second connecting surface. The side of the fourth connecting surface away from the third connecting surface is connected to the inner surface of the edge. The fourth connecting surface is configured as a rounded arc surface.

[0016] In an exemplary embodiment of the present disclosure, the outer edge surface is configured as a curved surface, and the outer edge surface is convex toward a side away from the inner edge surface.

[0017] In an exemplary embodiment of the present disclosure, the edge outer surface comprises:

[0018] a first connecting surface connected to the main body, wherein the first connecting surface is configured as an arc surface convex toward a side away from the inner surface of the edge;

[0019] The second connecting surface is connected to the side of the first connecting surface away from the main body, the side of the second connecting surface away from the first connecting surface is connected to the inner surface of the edge, and the second connecting surface is configured as a rounded arc surface.

[0020] In an exemplary embodiment of the present disclosure, a central cross-section of the first connecting surface in the second direction includes two symmetrically arranged spline curves, where the axis of symmetry is the central axis of the cover plate extending along the second direction; the spline curve includes a first point, a second point, a third point, and a fourth point; the first point is the connection point between the first connecting surface and the outer surface of the main body, and the fourth point is the connection point between the first connecting surface and the second connecting surface;

[0021] The distance between the second point and the first point in the first direction is greater than or equal to 2.1 mm and less than or equal to 2.3 mm, and the distance between the second point and the first point in the second direction is greater than or equal to 0.3 mm and less than or equal to 0.4 mm; the distance between the third point and the first point in the first direction is greater than or equal to 3.4 mm and less than or equal to 3.6 mm, and the distance between the third point and the first point in the second direction is greater than or equal to 1.15 mm and less than or equal to 1.25 mm, the first direction is parallel to the display surface of the display module, and the second direction is perpendicular to the display surface of the display module.

[0022] In an exemplary embodiment of the present disclosure, the edge outer surface comprises:

[0023] The first connecting surface is connected to the main body, and the side of the first connecting surface away from the main body is connected to the edge inner surface. The first connecting surface is configured as an arc surface convex toward the side away from the edge inner surface.

[0024] In an exemplary embodiment of the present disclosure, the roughness of a portion of the first connecting surface close to the inner surface of the edge is greater than the roughness of the outer surface of the main body.

[0025] In an exemplary embodiment of the present disclosure, a central cross-section of the first connecting surface in the second direction includes two symmetrically arranged spline curves, where the axis of symmetry is the central axis of the cover plate extending along the second direction; the spline curve includes a first point, a second point, a third point, and a fourth point; the first point is a connection point between the first connecting surface and the outer surface of the main body, and the fourth point is a connection point between the first connecting surface and the inner surface of the edge;

[0026] The distance between the second point and the first point in the first direction is greater than or equal to 2.1 mm and less than or equal to 2.3 mm, and the distance between the second point and the first point in the second direction is greater than or equal to 0.3 mm and less than or equal to 0.4 mm; the distance between the third point and the first point in the first direction is greater than or equal to 3.8 mm and less than or equal to 4 mm, and the distance between the third point and the first point in the second direction is greater than or equal to 1.55 mm and less than or equal to 1.65 mm, the first direction is parallel to the display surface of the display module, and the second direction is perpendicular to the display surface of the display module;

[0027] Alternatively, the distance between the second point and the first point in the first direction is greater than or equal to 1.8 mm and less than or equal to 2.15 mm, and the distance between the second point and the first point in the second direction is greater than or equal to 0.3 mm and less than or equal to 0.4 mm; the distance between the third point and the first point in the first direction is greater than or equal to 3.8 mm and less than or equal to 4 mm, and the distance between the third point and the first point in the second direction is greater than or equal to 1.55 mm and less than or equal to 1.65 mm, the first direction is parallel to the display surface of the display module, and the second direction is perpendicular to the display surface of the display module.

[0028] In an exemplary embodiment of the present disclosure, the edge outer surface comprises:

[0029] a first connecting surface connected to the main body, wherein the first connecting surface is configured as an arc surface convex toward a side away from the inner surface of the edge;

[0030] The second connecting surface is connected to the side of the first connecting surface away from the main body, the side of the second connecting surface away from the first connecting surface is connected to the inner surface of the edge, and the second connecting surface is set to be an inclined surface with a set angle to the display surface of the display module.

[0031] In an exemplary embodiment of the present disclosure, the roughness of at least one of the second connecting surface and a portion of the first connecting surface close to the second connecting surface is greater than the roughness of the outer surface of the main body.

[0032] In an exemplary embodiment of the present disclosure, a central cross-section of the first connecting surface in the second direction includes two symmetrically arranged spline curves, where the axis of symmetry is the central axis of the cover plate extending along the second direction; the spline curve includes a first point, a second point, and a third point; the first point is the connection point between the first connecting surface and the outer surface of the main body, and the third point is the connection point between the first connecting surface and the second connecting surface;

[0033] The distance between the second point and the first point in the first direction is greater than or equal to 2.1 mm and less than or equal to 2.3 mm, and the distance between the second point and the first point in the second direction is greater than or equal to 0.3 mm and less than or equal to 0.4 mm; the distance between the third point and the first point in the first direction is greater than or equal to 4.0 mm and less than or equal to 4.2 mm, and the distance between the third point and the first point in the second direction is greater than or equal to 1.65 mm and less than or equal to 1.75 mm, the first direction is parallel to the display surface of the display module, and the second direction is perpendicular to the display surface of the display module.

[0034] In an exemplary embodiment of the present disclosure, a set angle between the second connecting surface and the display surface of the display module is greater than or equal to 120 degrees and less than or equal to 140 degrees.

[0035] In an exemplary embodiment of the present disclosure, the edge inner surface comprises:

[0036] a first portion connected to the main body, wherein the first portion is configured to be a plane coplanar with an inner surface of the main body;

[0037] a second portion connected to a side of the first portion away from the main body, the second portion being configured as an arc surface concave toward one side of the outer surface of the edge;

[0038] A third portion is connected to a side of the second portion away from the first portion, and the third portion is configured as a rounded arc surface;

[0039] a fourth portion connected to a side of the third portion away from the second portion, the fourth portion being arranged as a plane parallel to the inner surface of the main body, and the side of the fourth portion away from the third portion being connected to the outer surface of the edge;

[0040] Among them, the ring width of the first part is greater than or equal to 1.5mm and less than or equal to 2.5mm; the second part is set to a circular arc surface, the central angle of the second part is greater than or equal to 85 degrees and less than or equal to 95 degrees, and the radius of the second part is greater than or equal to 0.9mm and less than or equal to 1.1mm; the third part is set to a circular arc surface, the central angle of the third part is greater than or equal to 85 degrees and less than or equal to 95 degrees, and the radius of the third part is greater than or equal to 0.09mm and less than or equal to 0.11mm; the ring width of the fourth part is greater than or equal to 0.8mm and less than or equal to 1.2mm.

[0041] In an exemplary embodiment of the present disclosure, the roughness of at least one of the second portion, the third portion, and the fourth portion is greater than the roughness of the inner surface of the body.

[0042] In an exemplary embodiment of the present disclosure, the edge inner surface comprises:

[0043] a first portion connected to the main body, wherein the first portion is configured to be a plane coplanar with an inner surface of the main body;

[0044] a second portion connected to a side of the first portion away from the main body, the second portion being configured as an arc surface concave toward one side of the outer surface of the edge;

[0045] A third portion is connected to a side of the second portion away from the first portion, and the third portion is configured as a rounded arc surface;

[0046] a fourth portion connected to a side of the third portion away from the second portion, the fourth portion being arranged as a plane parallel to the inner surface of the main body, and the side of the fourth portion away from the third portion being connected to the outer surface of the edge;

[0047] Among them, the ring width of the first part is greater than or equal to 1.5 mm and less than or equal to 2.5 mm; the second part is set to a circular arc surface, the central angle of the second part is greater than or equal to 85 degrees and less than or equal to 95 degrees, and the radius of the second part is greater than or equal to 0.9 mm and less than or equal to 1.1 mm; the third part is set to a circular arc surface, the central angle of the third part is greater than or equal to 85 degrees and less than or equal to 95 degrees, and the radius of the third part is greater than or equal to 0.09 mm and less than or equal to 0.11 mm; the ring width of the fourth part is greater than or equal to 1.1 mm and less than or equal to 1.55 mm.

[0048] In an exemplary embodiment of the present disclosure, the roughness of at least one of the second portion, the third portion, and the fourth portion is greater than the roughness of the inner surface of the body.

[0049] In an exemplary embodiment of the present disclosure, the edge portion includes:

[0050] A connecting ring connected to the main body, wherein the connecting ring is parallel to the inner surface of the main body;

[0051] The support tube is connected to a side of the connecting ring away from the main body, and the support tube is perpendicular to the inner surface of the main body.

[0052] In an exemplary embodiment of the present disclosure, the edge outer surface comprises:

[0053] a first connecting surface connected to the main body, wherein the first connecting surface is set as a plane parallel to the inner surface of the main body;

[0054] a second connecting surface connected to a side of the first connecting surface away from the main body, the second connecting surface being configured as a rounded arc surface;

[0055] a third connecting surface connected to a side of the second connecting surface away from the first connecting surface, wherein the third connecting surface is configured as a cylindrical surface;

[0056] The fourth connecting surface is connected to the side of the third connecting surface away from the second connecting surface, and the side of the fourth connecting surface away from the third connecting surface is connected to the inner surface of the edge. The fourth connecting surface is set to a rounded arc surface or a slope having a set angle with the display surface of the display module.

[0057] In an exemplary embodiment of the present disclosure, the roughness of at least one of the second connecting surface, the third connecting surface, and the fourth connecting surface is greater than the roughness of the outer surface of the main body.

[0058] In an exemplary embodiment of the present disclosure, the ring width of the first connecting surface is greater than or equal to 3.9 mm and less than or equal to 4.3 mm; the central angle of the second connecting surface is greater than or equal to 85 degrees and less than or equal to 95 degrees, and the radius of the second connecting surface is greater than or equal to 0.09 mm and less than or equal to 0.11 mm; the height of the third connecting surface in the second direction is greater than or equal to 2 mm and less than or equal to 3 mm; the central angle of the fourth connecting surface is greater than or equal to 85 degrees and less than or equal to 95 degrees, and the radius of the fourth connecting surface is greater than or equal to 0.09 mm and less than or equal to 0.11 mm, or, the angle between the fourth connecting surface and the display surface of the display module is greater than or equal to 120 degrees and less than or equal to 140 degrees, and the ring width of the fourth connecting surface is greater than or equal to 0.1 mm and less than or equal to 0.2 mm.

[0059] In an exemplary embodiment of the present disclosure, the edge inner surface comprises:

[0060] a first portion connected to the main body, the first portion being arranged as a plane coplanar with an inner surface of the main body, the first portion and the first connecting surface being included in the connecting ring;

[0061] a second portion connected to a side of the first portion away from the main body, the second portion being configured as a rounded arc surface;

[0062] a third portion connected to a side of the second portion away from the first portion, wherein the third portion is configured as a cylindrical surface;

[0063] A fourth portion is connected to a side of the third portion away from the second portion, and the fourth portion is configured as a rounded arc surface;

[0064] a fifth portion connected to a side of the fourth portion away from the third portion, the fifth portion being arranged as a plane parallel to the inner surface of the main body, the side of the fifth portion away from the fourth portion being connected to the outer surface of the edge, and at least the third portion, the fifth portion, and the third connecting surface being included in the support tube;

[0065] Among them, the ring width of the first part is greater than or equal to 1.5 mm and less than or equal to 2.5 mm; the central angle of the second part is greater than or equal to 85 degrees and less than or equal to 95 degrees, and the radius of the second part is greater than or equal to 0.09 mm and less than or equal to 0.11 mm; the height of the third part in the second direction is greater than or equal to 1 mm and less than or equal to 1.5 mm; the central angle of the fourth part is greater than or equal to 85 degrees and less than or equal to 95 degrees, and the radius of the second part is greater than or equal to 0.09 mm and less than or equal to 0.11 mm; the ring width of the fifth part is greater than or equal to 0.8 mm and less than or equal to 1.2 mm.

[0066] In an exemplary embodiment of the present disclosure, the roughness of at least one of the second portion, the third portion, the fourth portion, and the fifth portion is greater than the roughness of the inner surface of the body.

[0067] In an exemplary embodiment of the present disclosure, the arithmetic mean deviation Ra of the contour of at least part of the inner surface of the edge is greater than or equal to 0.1 and less than 1.6, and the arithmetic mean deviation Ra of the contour of at least part of the outer surface of the edge is greater than or equal to 0.1 and less than 1.6; or, the maximum height Rz of the contour of at least part of the inner surface of the edge is greater than or equal to 0.8 and less than 6.3, and the maximum height Rz of the contour of at least part of the outer surface of the edge is greater than or equal to 0.8 and less than 6.3.

[0068] In an exemplary embodiment of the present disclosure, the cover plate further includes:

[0069] A first light-shielding layer and / or a second light-shielding layer, wherein the first light-shielding layer is provided on at least a portion of the inner surface of the edge, and the second light-shielding layer is provided on at least a portion of the outer surface of the edge.

[0070] In an exemplary embodiment of the present disclosure, the thickness of the first light-shielding layer is greater than or equal to 0.1 mm and less than 0.5 mm, and the thickness of the second light-shielding layer is greater than or equal to 0.1 mm and less than 0.5 mm.

[0071] According to another aspect of the present disclosure, there is provided a display device, comprising:

[0072] Display module;

[0073] A cover plate is provided on the light-emitting side of the display module, and the cover plate is any one of the cover plates described above.

[0074] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] The accompanying drawings are incorporated into and constitute a part of this specification, illustrate embodiments consistent with the present disclosure, and together with the description, serve to explain the principles of the present disclosure. It is apparent that the drawings described below are merely some embodiments of the present disclosure, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0076] FIG1 is a schematic diagram of a three-dimensional structure of an exemplary embodiment of a cover plate disclosed herein.

[0077] FIG2 is a schematic diagram of the three-dimensional structure of another exemplary embodiment of the cover plate disclosed herein.

[0078] FIG3 is a schematic diagram of the three-dimensional structure of another exemplary embodiment of the cover plate disclosed herein.

[0079] FIG4 is a partial cross-sectional schematic diagram of a first exemplary embodiment of a cover plate according to the present disclosure.

[0080] FIG5 is a partial cross-sectional schematic diagram of the cover plate in FIG4 provided with a first light-shielding layer.

[0081] FIG6 is a partial cross-sectional schematic diagram of the cover plate in FIG4 provided with a second light-shielding layer.

[0082] FIG7 is a partial cross-sectional schematic diagram of the cover plate in FIG4 provided with a first light-shielding layer and a second light-shielding layer.

[0083] 8 and 9 are schematic diagrams of simulation of light leakage in the related art.

[0084] 10 and 11 are schematic diagrams of light leakage simulations according to the first exemplary embodiment of the present disclosure.

[0085] FIG12 is a partial cross-sectional schematic diagram of a second exemplary embodiment of a cover plate according to the present disclosure.

[0086] 13 and 14 are schematic diagrams of light leakage simulations according to a second exemplary embodiment of the present disclosure.

[0087] FIG15 is a partial cross-sectional schematic diagram of a third exemplary embodiment of a cover plate according to the present disclosure.

[0088] 16 and 17 are schematic diagrams of light leakage simulations according to the third exemplary embodiment of the present disclosure.

[0089] FIG18 is a partial cross-sectional schematic diagram of a fourth exemplary embodiment of a cover plate according to the present disclosure.

[0090] 19 and 20 are schematic diagrams illustrating simulations of light leakage according to a fourth exemplary embodiment of the present disclosure.

[0091] FIG21 is a partial cross-sectional schematic diagram of a fifth exemplary embodiment of a cover plate according to the present disclosure.

[0092] 22 and 23 are schematic diagrams illustrating simulations of light leakage according to a fifth exemplary embodiment of the present disclosure.

[0093] FIG24 is a partial cross-sectional schematic diagram of a sixth exemplary embodiment of a cover plate according to the present disclosure.

[0094] 25 and 26 are schematic diagrams of light leakage simulations according to a sixth exemplary embodiment of the present disclosure.

[0095] FIG27 is a schematic structural diagram of the display device disclosed herein.

[0096] FIG28 is a schematic structural diagram of the display panel in FIG27 .

[0097] FIG29 is a schematic diagram showing the structure of a smart watch in which the display device is provided.

[0098] FIG30 is a schematic diagram showing a comparison of the diameters of various areas of the cover and display module of a smart watch.

[0099] Explanation of reference numerals: 100, display module; 10, display panel; 20, polarizer; 30, adhesive layer; 40, heat dissipation backplane; 50, NFC module; 60, sensor; 1, base substrate; 2, driving substrate; 21, shielding layer; 22, buffer layer; 231, channel portion; 232, source connection portion; 233, drain connection portion; 24, gate insulating layer; 25, gate layer; 251, gate; 26, interlayer dielectric layer; 27, first connecting conductor layer; 271, source electrode; 272, drain electrode; 28, planarization layer; 3, light-emitting substrate; 31, first electrode; 32, pixel definition layer; 33, light-emitting layer group; 34, second electrode; 35, sub-pixel; 4, encapsulation layer group; 41, first inorganic layer; 42, organic layer; 43, second inorganic layer; 5, touch layer group; 6. Cover plate; 61. Main body; 611. Inner surface of the main body; 612. Outer surface of the main body; 62. Edge; 62a. Connecting ring; 62b. Support tube; 621. Inner surface of the edge; 6211. First part; 6212. Second part; 6213. Third part; 6214. Fourth part; 6215. Fifth part; 622. Outer surface of the edge; 6221. First connecting surface; 6222. Second connecting surface; 6223. Third connecting surface; 6224. Fourth connecting surface; 63. First shading layer; 64. Second shading layer; L. Spline curve; A. First point; B. Second point; C. Third point; D. Fourth point; X. First direction; Y. Second direction. DETAILED DESCRIPTION

[0100] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent identical or similar structures, and thus their detailed descriptions will be omitted. Furthermore, the figures are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale.

[0101] Although relative terms such as "upper" and "lower" are used in this specification to describe the relationship of one illustrated component to another, these terms are used herein for convenience only, such as in accordance with the orientation of the illustrations in the accompanying drawings. It will be understood that if the illustrated device were flipped upside down, the component described as "upper" would become the component "lower." When a structure is referred to as "on" another structure, this may mean that the structure is integrally formed with the other structure, that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via the other structure.

[0102] The terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to express open-ended inclusion and mean that additional elements / components / etc. may be present in addition to the listed elements / components / etc.; the terms "first", "second" and "third" etc. are used only as labels and are not intended to limit the quantity of their objects.

[0103] In this application, unless otherwise specified or limited, the term "connected" should be understood broadly. For example, "connected" can mean fixed, removable, or integrated; it can be directly connected or indirectly connected through an intermediary. "And / or" simply describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, or B exists alone. Additionally, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0104] An example embodiment of the present disclosure provides a cover plate 6, as shown in Figures 1 to 26, the cover plate 6 may include a main body portion 61 and an edge portion 62; the main body portion 61 has a main body inner surface 611 and a main body outer surface 612; the edge portion 62 is connected to the periphery of the main body portion 61, and the edge portion 62 has an edge inner surface 621 and an edge outer surface 622, and the edge inner surface 621 is closer to the display module 100 than the edge outer surface 622; the roughness of at least part of the edge inner surface 621 is greater than the roughness of the main body inner surface 611, and / or, the roughness of at least part of the edge outer surface 622 is greater than the roughness of the main body outer surface 612.

[0105] The cover plate 6 of the present disclosure increases the roughness of at least a portion of the edge inner surface 621 so that at least a portion of the edge inner surface 621 changes from the original mirror reflection to diffuse reflection, thereby reducing the reflection of light by the edge inner surface 621, and further reducing light leakage and the generation of halos; or, increases the roughness of at least a portion of the edge inner surface 621 so that at least a portion of the edge inner surface 621 changes from the original mirror reflection to diffuse reflection, thereby reducing the reflection of light by the edge inner surface 621, and further reducing light leakage and the generation of halos; or, increases the roughness of at least a portion of the edge outer surface 622 and the roughness of at least a portion of the edge inner surface 621 so that the reflection of light back and forth between the edge outer surface 622 and the edge inner surface 621 is reduced, thereby reducing light leakage and the generation of halos.

[0106] In this exemplary embodiment, the cover plate 6 may be made of a transparent material, for example, the cover plate 6 may be made of glass, sapphire, or other engineering plastics.

[0107] 1 to 3 , the cover plate 6 may include a main body 61 and an edge portion 62, wherein the edge portion 62 is connected to the periphery of the main body 61. The main body 61 may be configured in various shapes, such as a circle, a rounded rectangle, or an ellipse. The edge portion 62 may be configured in a ring shape that is compatible with the main body 61. For example, if the main body 61 is configured in a circle, the edge portion 62 may be configured in a circle shape; if the main body 61 is configured in a rounded rectangle shape, the edge portion 62 may be configured in a rounded rectangle ring shape; and if the main body 61 is configured in an elliptical shape, the edge portion 62 may be configured in an elliptical ring shape. Of course, the main body 61 and the edge portion 62 may also have other shapes, which are not described here.

[0108] It should be noted that, when the first connecting surface 6221 of the edge outer surface 622 of the edge portion 62 is set as an arc surface, the starting point of the first connecting surface 6221 is taken as the starting point of the edge portion 62; when the first connecting surface 6221 of the edge outer surface 622 of the edge portion 62 is set as a plane, and the thickness of a part of the edge portion 62 is the same as the thickness of the main body portion 61, the starting point of the edge portion 62 can be the edge of the display module 100 as a whole expanded outward by about 0.5 mm.

[0109] As shown in Figure 4, the main body 61 has an inner surface 611 and an outer surface 612. The inner surface 611 is closer to the display module 100 than the outer surface 612. The inner surface 611 can be bonded to the display module 100. Therefore, the inner surface 611 can be configured as a flat surface to ensure adhesion to the display module 100. The outer surface 612 can also be configured as a flat surface. Of course, the outer surface 612 can also be configured as a curved surface that convexly faces away from the inner surface 611, and this curved surface can be a circular arc.

[0110] When the main body 61 is set to be circular, the diameter of the main body 61 is greater than or equal to 38 mm and less than or equal to 42 mm. For example, the diameter of the main body 61 can be 38.5 mm, 39 mm, 39.5 mm, 40 mm, 40.5 mm, 41 mm, 41.5 mm, etc.

[0111] The thickness T1 of the main body 61 is greater than or equal to 1.1 mm and less than or equal to 1.3 mm. For example, the thickness T1 of the main body 61 may be 1.12 mm, 1.15 mm, 1.17 mm, 1.2 mm, 1.23 mm, 1.25 mm, 1.28 mm, etc.

[0112] The overall thickness T2 of the cover plate 6 is greater than or equal to 2.1 mm and less than or equal to 2.3 mm. For example, the overall thickness T2 of the cover plate 6 can be 2.12 mm, 2.15 mm, 2.17 mm, 2.2 mm, 2.23 mm, 2.25 mm, 2.28 mm, etc.

[0113] The edge portion 62 has an edge inner surface 621 and an edge outer surface 622. The edge inner surface 621 is closer to the display module 100 than the edge outer surface 622. The edge inner surface 621 is smoothly connected to the main body inner surface 611, together forming the inner surface of the cover plate 6. The edge outer surface 622 is smoothly connected to the main body outer surface 612, together forming the outer surface of the cover plate 6.

[0114] In this example embodiment, the roughness of at least a portion of the edge inner surface 621 is greater than the roughness of the main body inner surface 611. Specifically, the arithmetic mean deviation Ra of the profile of at least a portion of the edge inner surface 621 is greater than or equal to 0.1 and less than 1.6. For example, the arithmetic mean deviation Ra of the profile of at least a portion of the edge inner surface 621 can be 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 0.95, 1.0, 1.05, 1.1, 1.15, 1.2, 1.25, 1.3, 1.35, 1.4, 1.45, 1.5, 1.55, and the like.

[0115] Alternatively, the maximum height Rz of the profile of at least part of the edge inner surface 621 is greater than or equal to 0.8 and less than 6.3. For example, the maximum height Rz of the profile of at least part of the edge inner surface 621 can be 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, etc.

[0116] By increasing the roughness of at least a portion of the edge inner surface 621 , at least a portion of the edge inner surface 621 is changed from original specular reflection to diffuse reflection, thereby reducing the reflection of light by the edge inner surface 621 , thereby reducing light leakage and the generated halo.

[0117] In some other example embodiments of the present disclosure, the roughness of at least a portion of the edge outer surface 622 is greater than the roughness of the main body outer surface 612. Specifically, the arithmetic mean deviation Ra of the profile of at least a portion of the edge outer surface 622 is greater than or equal to 0.1 and less than 1.6. For example, the arithmetic mean deviation Ra of the profile of at least a portion of the edge outer surface 622 can be 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 0.95, 1.0, 1.05, 1.1, 1.15, 1.2, 1.25, 1.3, 1.35, 1.4, 1.45, 1.5, 1.55, and the like.

[0118] Alternatively, the maximum height Rz of the profile of at least part of the edge outer surface 622 is greater than or equal to 0.8 and less than 6.3. For example, the maximum height Rz of the profile of at least part of the edge outer surface 622 can be 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, etc.

[0119] By increasing the roughness of at least a portion of the edge outer surface 622 , at least a portion of the edge outer surface 622 is changed from original specular reflection to diffuse reflection, thereby reducing the reflection of light by the edge inner surface 621 , thereby reducing light leakage and the generated halo.

[0120] Of course, in some exemplary embodiments of the present disclosure, the roughness of at least a portion of the edge inner surface 621 is greater than the roughness of the main body inner surface 611, and the roughness of at least a portion of the edge outer surface 622 is greater than the roughness of the main body outer surface 612. That is, the roughness of at least a portion of the edge inner surface 621 and at least a portion of the edge outer surface 622 are both set to be relatively large. By increasing the roughness of at least a portion of the edge outer surface 622 and at least a portion of the edge inner surface 621, light reflections between the edge outer surface 622 and the edge inner surface 621 are reduced, thereby reducing light leakage and the generation of halos.

[0121] In this exemplary embodiment, as shown in FIG5 , a first light shielding layer 63 is provided on at least a portion of the edge inner surface 621 . The first light shielding layer 63 can block light, further reducing light leakage and halo generation.

[0122] Moreover, the first light-shielding layer 63 can be arranged in the part with large roughness of the edge inner surface 621, that is, the first light-shielding layer 63 is arranged in the area where the roughness of the edge inner surface 621 is greater than the roughness of the main body inner surface 611; by increasing the roughness of at least part of the edge inner surface 621, the adhesion between the first light-shielding layer 63 and the edge inner surface 621 can be increased, and the shedding of the first light-shielding layer 63 after long-term use can be reduced, thereby ensuring the light-shielding effect of the first light-shielding layer 63.

[0123] The thickness of the first light shielding layer 63 is greater than or equal to 0.1 mm and less than 0.5 mm. For example, the thickness of the first light shielding layer 63 may be 0.15 mm, 0.2 mm, 0.25 mm, 0.3 mm, 0.35 mm, 0.4 mm, 0.45 mm, etc.

[0124] The material of the first light shielding layer 63 may be black ink. Of course, the material of the first light shielding layer 63 may also be other black materials that can absorb photons.

[0125] In some other example embodiments of the present disclosure, as shown in FIG6 , a second light-shielding layer 64 is provided on at least a portion of the edge outer surface 622 , and the second light-shielding layer 64 can block light, further reducing light leakage and halo generation.

[0126] Moreover, the second shading layer 64 can be arranged in the part with large roughness of the edge outer surface 622, that is, the second shading layer 64 is arranged in the area where the roughness of the edge outer surface 622 is greater than the roughness of the main body outer surface 612; by increasing the roughness of at least part of the edge outer surface 622, the adhesion between the second shading layer 64 and the edge outer surface 622 can be increased, and the falling off of the second shading layer 64 after long-term use can be reduced, thereby ensuring the shading effect of the second shading layer 64.

[0127] The thickness of the second light shielding layer 64 is greater than or equal to 0.1 mm and less than 0.5 mm. For example, the thickness of the second light shielding layer 64 can be 0.15 mm, 0.2 mm, 0.25 mm, 0.3 mm, 0.35 mm, 0.4 mm, 0.45 mm, etc.

[0128] The material of the second light shielding layer 64 can be black ink. Of course, the material of the second light shielding layer 64 can also be other black materials that can absorb photons.

[0129] Of course, in some example embodiments of the present disclosure, as shown in FIG7 , a first light-shielding layer 63 is provided on at least a portion of the inner edge surface 621, and a second light-shielding layer 64 is provided on at least a portion of the outer edge surface 622. The first light-shielding layer 63 and the second light-shielding layer 64 can jointly block light, further reducing light leakage and reducing the generation of halos.

[0130] Furthermore, the first light-shielding layer 63 can be disposed on the roughest portion of the edge inner surface 621, i.e., the first light-shielding layer 63 is disposed in the region where the roughness of the edge inner surface 621 is greater than the roughness of the main body inner surface 611; and the second light-shielding layer 64 can be disposed on the roughest portion of the edge outer surface 622, i.e., the second light-shielding layer 64 is disposed in the region where the roughness of the edge outer surface 622 is greater than the roughness of the main body outer surface 612. By increasing the roughness of at least a portion of the edge inner surface 621, the adhesion between the first light-shielding layer 63 and the edge inner surface 621 can be increased, and by increasing the roughness of at least a portion of the edge outer surface 622, the adhesion between the second light-shielding layer 64 and the edge outer surface 622 can be increased, thereby reducing the shedding of the first and second light-shielding layers 63, 64 after prolonged use, thereby ensuring the light-shielding effect of the first and second light-shielding layers 63, 64.

[0131] In some exemplary embodiments of the present disclosure, as shown in Figures 1-7 , edge portion 62 is bent toward the side of main body 61 where display module 100 is provided, so that at least a portion of edge portion 62 is configured as a curved structure. Edge portion 62 can be used to cover display module 100. Of course, in other exemplary embodiments of the present disclosure, edge portion 62 can also be configured as a flat plate.

[0132] 4-7 , the edge outer surface 622 may include a first connection surface 6221, a second connection surface 6222, a third connection surface 6223, and a fourth connection surface 6224. Since the edge portion 62 is annular, the edge outer surface 622 is configured to be annular, so that the first connection surface 6221, the second connection surface 6222, the third connection surface 6223, and the fourth connection surface 6224 are all annular.

[0133] The first connecting surface 6221 is connected to the main body 61, and the first connecting surface 6221 is set to be an arc surface that bulges toward the side away from the edge inner surface 621; the central section of the first connecting surface 6221 in the second direction Y may include two symmetrically arranged spline curves L, and the symmetry axes of the two spline curves L are the central axis of the cover plate 6 extending along the second direction Y.

[0134] It should be noted that the central cross-section in the second direction Y is a cross-section passing through the central axis extending along the second direction Y, and this cross-section can symmetrically divide the cover plate 6; when the cover plate is circular, there are countless central cross-sections in the second direction Y; when the cover plate is a rounded rectangle or an ellipse, there are two central cross-sections in the second direction Y, as shown by the dotted line in Figure 2.

[0135] 4 to 7 , the spline curve L may include a first point A, a second point B, a third point C, and a fourth point D. The first point A is the connection point between the first connecting surface 6221 and the main body outer surface 612. The first connecting surface 6221 and the main body outer surface 612 are tangentially connected at the first point A, thereby allowing the first connecting surface 6221 and the main body outer surface 612 to be smoothly connected at the first point A. The fourth point D is the connection point between the first connecting surface 6221 and the second connecting surface 6222. The first connecting surface 6221 and the second connecting surface 6222 are tangentially connected at the fourth point D, thereby allowing the first connecting surface 6221 and the second connecting surface 6222 to be smoothly connected at the fourth point D.

[0136] A distance K1 between the second point B and the first point A in the first direction X is greater than or equal to 2.1 mm and less than or equal to 2.3 mm. For example, the distance K1 between the second point B and the first point A in the first direction X may be 2.13 mm, 2.15 mm, 2.18 mm, 2.2 mm, 2.22 mm, 2.25 mm, 2.27 mm, etc. A distance H1 between the second point B and the first point A in the second direction Y is greater than or equal to 0.3 mm and less than or equal to 0.4 mm. For example, the distance H1 between the second point B and the first point A in the second direction Y may be 0.32 mm, 0.35 mm, 0.37 mm, etc.

[0137] A distance K2 between the third point C and the first point A in the first direction X is greater than or equal to 3.4 mm and less than or equal to 3.6 mm. For example, the distance K2 between the third point C and the first point A in the first direction X may be 3.42 mm, 3.45 mm, 3.47 mm, 3.5 mm, 3.53 mm, 3.55 mm, 3.58 mm, etc. A distance H2 between the third point C and the first point A in the second direction Y is greater than or equal to 1.15 mm and less than or equal to 1.25 mm. For example, the distance H2 between the third point C and the first point A in the second direction Y may be 1.18 mm, 1.2 mm, 1.23 mm, etc.

[0138] It should be noted that in the present disclosure, the first direction X is parallel to the display surface of the display module 100. Therefore, the first direction X can be an infinite number of directions parallel to the display surface of the display module 100, only one of which is shown in the figure; the second direction Y is perpendicular to the display surface of the display module 100.

[0139] The second connecting surface 6222 is connected to the side of the first connecting surface 6221 away from the main body 61. The second connecting surface 6222 is configured as an arc surface that convexly extends away from the edge inner surface 621. Specifically, the second connecting surface 6222 can be configured as an arc surface. The radius of the second connecting surface 6222 is greater than or equal to 0.09 mm and less than or equal to 0.11 mm. For example, the radius of the second connecting surface 6222 can be 0.093 mm, 0.095 mm, 0.098 mm, 0.1 mm, 0.102 mm, 0.105 mm, 0.107 mm, etc. The central angle of the second connecting surface 6222 is approximately 30 degrees.

[0140] The third connecting surface 6223 is connected to the side of the second connecting surface 6222 away from the first connecting surface 6221. Furthermore, the third connecting surface 6223 and the second connecting surface 6222 are tangentially connected at the connection point, thereby achieving a smooth transition between the third connecting surface 6223 and the second connecting surface 6222 at the connection point. The third connecting surface 6223 can be configured as a cylindrical surface, that is, the third connecting surface 6223 is a cylindrical surface extending along the second direction Y, and the third connecting surface 6223 is perpendicular to the display surface of the display module 100. The height H3 of the third connecting surface 6223 in the second direction Y is greater than or equal to 0.35 mm and less than or equal to 0.45 mm. For example, the height H3 of the third connecting surface 6223 in the second direction Y can be 0.37 mm, 0.4 mm, 0.43 mm, etc.

[0141] The fourth connecting surface 6224 is connected to the side of the third connecting surface 6223 away from the second connecting surface 6222. Furthermore, the fourth connecting surface 6224 and the third connecting surface 6223 are tangentially connected at the connection point, thereby achieving a smooth transition between the fourth connecting surface 6224 and the third connecting surface 6223 at the connection point. The fourth connecting surface 6224 is configured as a rounded arc surface. Specifically, the fourth connecting surface 6224 is configured as an arc surface. The radius of the fourth connecting surface 6224 is greater than or equal to 0.09 mm and less than or equal to 0.11 mm. For example, the radius of the fourth connecting surface 6224 can be 0.093 mm, 0.095 mm, 0.098 mm, 0.1 mm, 0.102 mm, 0.105 mm, 0.107 mm, etc. The central angle of the fourth connecting surface 6224 is approximately 90 degrees.

[0142] The side of the fourth connecting surface 6224 away from the third connecting surface 6223 is connected to the edge inner surface 621, and the fourth connecting surface 6224 and the edge inner surface 621 are tangentially connected at the connection point, so that the fourth connecting surface 6224 and the edge inner surface 621 are smoothly transitioned and connected at the connection point.

[0143] 4 to 7 , the edge inner surface 621 may include a first portion 6211, a second portion 6212, a third portion 6213, and a fourth portion 6214. Since the edge portion 62 is annular, the edge inner surface 621 is configured to be annular, such that the first portion 6211, the second portion 6212, the third portion 6213, and the fourth portion 6214 are all annular.

[0144] The first portion 6211 is connected to the main body 61, specifically, the first portion 6211 is connected to the main body inner surface 611. The first portion 6211 is configured to be flat and coplanar with the main body inner surface 611. The ring width of the first portion 6211 is greater than or equal to 1.5 mm and less than or equal to 2.5 mm. For example, the ring width of the first portion 6211 can be 1.55 mm, 1.6 mm, 1.65 mm, 1.7 mm, 1.75 mm, 1.8 mm, 1.85 mm, 1.9 mm, 1.95 mm, 2.0 mm, 2.05 mm, 2.1 mm, 2.15 mm, 2.2 mm, 2.25 mm, 2.3 mm, 2.35 mm, 2.4 mm, 2.45 mm, etc.

[0145] The second portion 6212 is connected to the side of the first portion 6211 away from the main body 61. Furthermore, the second portion 6212 and the first portion 6211 are tangentially connected at the connection point, thereby achieving a smooth transition between the second portion 6212 and the first portion 6211 at the connection point. The second portion 6212 is configured as an arc surface that is recessed toward the edge outer surface 622. Specifically, the second portion 6212 is configured as an arc surface. The radius of the second portion 6212 is greater than or equal to 0.9 mm and less than or equal to 1.1 mm. For example, the radius of the second portion 6212 can be 0.93 mm, 0.95 mm, 0.98 mm, 1 mm, 1.02 mm, 1.05 mm, 1.07 mm, etc. The central angle of the second portion 6212 is greater than or equal to 85 degrees and less than or equal to 95 degrees. For example, the central angle of the second portion 6212 can be 88 degrees, 90 degrees, 92 degrees, etc.

[0146] The third portion 6213 is connected to the side of the second portion 6212 away from the first portion 6211. Furthermore, the third portion 6213 and the second portion 6212 are tangentially connected at the connection point, thereby achieving a smooth transition between the third portion 6213 and the second portion 6212 at the connection point. The third portion 6213 is configured as a rounded arc surface. Specifically, the third portion 6213 is configured as an arc surface. The radius of the third portion 6213 is greater than or equal to 0.09 mm and less than or equal to 0.11 mm. For example, the radius of the third portion 6213 can be 0.093 mm, 0.095 mm, 0.098 mm, 0.1 mm, 0.102 mm, 0.105 mm, 0.107 mm, etc. The central angle of the third portion 6213 is greater than or equal to 85 degrees and less than or equal to 95 degrees. For example, the central angle of the third portion 6213 can be 88 degrees, 90 degrees, 92 degrees, etc.

[0147] The fourth portion 6214 is connected to the side of the third portion 6213 away from the second portion 6212. Furthermore, the fourth portion 6214 and the third portion 6213 are tangentially connected at the connection point, thereby achieving a smooth transition between the fourth portion 6214 and the third portion 6213 at the connection point. The fourth portion 6214 is arranged as a plane parallel to the inner surface 611 of the main body. The ring width of the fourth portion 6214 is greater than or equal to 0.8 mm and less than or equal to 1.2 mm. For example, the ring width of the fourth portion 6214 can be 0.83 mm, 0.85 mm, 0.88 mm, 0.9 mm, 0.92 mm, 0.95 mm, 0.97 mm, 1 mm, 1.03 mm, 1.05 mm, 1.08 mm, 1.12 mm, 1.15 mm, 1.17 mm, etc.

[0148] The side of the fourth part 6214 away from the third part 6213 is connected to the edge outer surface 622. Specifically, the side of the fourth part 6214 away from the third part 6213 is connected to the fourth connecting surface 6224. Moreover, the fourth part 6214 and the fourth connecting surface 6224 are tangentially connected at the connection point, so that the fourth part 6214 and the fourth connecting surface 6224 are smoothly transitioned and connected at the connection point.

[0149] The fourth portion 6214 is used to bond to a bottom plate that fixes the display module 100 when forming a display device.

[0150] The inventors found that, referring to Figures 8 and 9, the second connecting surface 6222, the third connecting surface 6223 and the fourth connecting surface 6224 of the above-mentioned cover plate 6 are the main leakage light sources, and 80% to 90% of the leakage light is emitted from these three parts; the first connecting surface 6221 is the secondary leakage light source, and 10% to 20% of the leakage light is emitted from this part; the total light leakage rate is as high as 0.40% to 0.60%.

[0151] A receiver is provided on the plane where the fourth portion 6214 of the display device's cover plate 6 is located. The receiver is arranged in an annular shape, tightly fitting and surrounding the outer circumference of the cover plate 6. The receiver's annular width can be 1.5 to 3 times the diameter of the cover plate 6, and the receiver's receiving surface is the side with the cover plate. This planar receiver collects the leaked light to calculate the leakage power. A far-field receiver is provided. The diameter or side length of the far-field receiver can be 3 to 5 times the diameter of the cover plate 6, and the distance between the far-field receiver and the main outer surface 612 of the cover plate 6 can be 10 to 20 times the thickness of the cover plate 6. The receiving surface of the far-field receiver faces the cover plate 6. This far-field receiver collects all light emitted from the display device's cover plate 6 to calculate the total optical power. The leakage rate is defined as the ratio of the leakage power to the total optical power. The subsequent collection and calculation methods for the leakage rate are also used.

[0152] In this case, the roughness of the second connecting surface 6222, the third connecting surface 6223, and the fourth connecting surface 6224 is set to be relatively high. As shown in Figures 10 and 11, the surface of the second connecting surface 6222, the third connecting surface 6223, and the fourth connecting surface 6224 changes from specular reflection to diffuse reflection, and the intensity and amount of light leakage are suppressed. According to simulation testing, the light leakage rate can be reduced to 0.25% to 0.35%. Of course, in other exemplary embodiments of the present disclosure, the roughness of one or two of the second connecting surface 6222, the third connecting surface 6223, and the fourth connecting surface 6224 can also be set to be relatively high, which can also reduce the light leakage rate. Alternatively, the roughness of the entire edge outer surface 622 can be set to be relatively high.

[0153] In some other example embodiments of the present disclosure, the roughness of the second part 6212, the third part 6213 and the fourth part 6214 can be further set to be larger; so that the reflection of light between the second part 6212, the third part 6213 and the fourth part 6214 and the second connecting surface 6222, the third connecting surface 6223 and the fourth connecting surface 6224 is reduced, and the light leakage rate can be reduced to 0.20% to 0.30%.

[0154] Of course, in some other example embodiments of the present disclosure, the roughness of one or two surfaces of the second part 6212, the third part 6213 and the fourth part 6214 can also be set to be larger, which can also play a role in reducing the light leakage rate; the roughness of the entire edge inner surface 621 can also be set to be larger.

[0155] When a first light-shielding layer 63 is provided, the first light-shielding layer 63 can be provided on at least one surface of the first part 6211, the second part 6212, the third part 6213 and the fourth part 6214, and the light leakage rate can be further reduced by blocking the light through the first light-shielding layer 63.

[0156] When a second shading layer 64 is provided, the second shading layer 64 can be provided on at least one of the first connecting surface 6221, the second connecting surface 6222, the third connecting surface 6223 and the fourth connecting surface 6224, and the light leakage rate can be further reduced by blocking the light through the second shading layer 64.

[0157] 12-20 , in some example embodiments of the present disclosure, the edge outer surface 622 is configured as an arc surface, and the edge outer surface 622 protrudes toward the side away from the edge inner surface 621 , that is, the edge outer surface 622 does not have a cylindrical third connecting surface 6223 .

[0158] 12 , the edge outer surface 622 may include a first connection surface 6221 and a second connection surface 6222 . Since the edge portion 62 is annular, the edge outer surface 622 is configured to be annular, so that both the first connection surface 6221 and the second connection surface 6222 are annular.

[0159] The first connecting surface 6221 is connected to the main body 61, and the first connecting surface 6221 is set to be an arc surface that bulges toward the side away from the edge inner surface 621; the central section of the first connecting surface 6221 in the second direction Y may include two symmetrically arranged spline curves L, and the symmetry axes of the two spline curves L are the central axis of the cover plate 6 extending along the second direction Y.

[0160] The spline curve L may include a first point A, a second point B, a third point C, and a fourth point D. The first point A is the connection point between the first connecting surface 6221 and the main body outer surface 612. The first connecting surface 6221 and the main body outer surface 612 are tangentially connected at the first point A, thereby allowing the first connecting surface 6221 and the main body outer surface 612 to be smoothly connected at the first point A. The fourth point D is the connection point between the first connecting surface 6221 and the second connecting surface 6222. The first connecting surface 6221 and the second connecting surface 6222 are tangentially connected at the fourth point D, thereby allowing the first connecting surface 6221 and the second connecting surface 6222 to be smoothly connected at the fourth point D.

[0161] A distance K1 between the second point B and the first point A in the first direction X is greater than or equal to 2.1 mm and less than or equal to 2.3 mm. For example, the distance K1 between the second point B and the first point A in the first direction X may be 2.13 mm, 2.15 mm, 2.18 mm, 2.2 mm, 2.22 mm, 2.25 mm, 2.27 mm, etc. A distance H1 between the second point B and the first point A in the second direction Y is greater than or equal to 0.3 mm and less than or equal to 0.4 mm. For example, the distance H1 between the second point B and the first point A in the second direction Y may be 0.32 mm, 0.35 mm, 0.37 mm, etc.

[0162] A distance K2 between the third point C and the first point A in the first direction X is greater than or equal to 3.4 mm and less than or equal to 3.6 mm. For example, the distance K2 between the third point C and the first point A in the first direction X may be 3.42 mm, 3.45 mm, 3.47 mm, 3.5 mm, 3.53 mm, 3.55 mm, 3.58 mm, etc. A distance H2 between the third point C and the first point A in the second direction Y is greater than or equal to 1.15 mm and less than or equal to 1.25 mm. For example, the distance H2 between the third point C and the first point A in the second direction Y may be 1.18 mm, 1.2 mm, 1.23 mm, etc.

[0163] The second connecting surface 6222 is connected to the side of the first connecting surface 6221 away from the main body 61. The second connecting surface 6222 is configured as a rounded arc surface. Specifically, the second connecting surface 6222 can be configured as an arc surface. The radius of the second connecting surface 6222 is greater than or equal to 0.09 mm and less than or equal to 0.11 mm. For example, the radius of the second connecting surface 6222 can be 0.093 mm, 0.095 mm, 0.098 mm, 0.1 mm, 0.102 mm, 0.105 mm, 0.107 mm, etc. The central angle of the second connecting surface 6222 is greater than or equal to 85 degrees and less than or equal to 95 degrees. For example, the central angle of the second connecting surface 6222 can be 88 degrees, 90 degrees, 92 degrees, etc. The side of the second connecting surface 6222 away from the first connecting surface 6221 is connected to the edge inner surface 621, and the second connecting surface 6222 and the edge inner surface 621 are tangentially connected at the connection point, so that the second connecting surface 6222 and the edge inner surface 621 are smoothly transitioned and connected at the connection point.

[0164] The specific structure of the edge inner surface 621 is the same as that shown in FIG. 4 , and therefore, will not be described again here.

[0165] In this case, the roughness of the second portion 6212 , the third portion 6213 and the fourth portion 6214 can be set to be larger; the first light shielding layer 63 can be set in the second portion 6212 , the third portion 6213 and the fourth portion 6214 .

[0166] 13 and 14 , compared with FIG4 , a cylindrical third connecting surface 6223 is not provided, thereby reducing light leakage from the third connecting surface 6223 and causing the original light leakage to be totally reflected internally; and causing the light on the surfaces of the second portion 6212, the third portion 6213 and the fourth portion 6214 to be changed from mirror reflection to diffuse reflection, thereby suppressing the intensity and amount of the leakage light source. According to simulation detection, the light leakage rate can be reduced to 0.20% to 0.30%.

[0167] Of course, in other exemplary embodiments of the present disclosure, the roughness of one or two surfaces of the second portion 6212, the third portion 6213, and the fourth portion 6214 can also be set to a higher level, which can also help reduce light leakage. The roughness of the entire edge inner surface 621 can also be set to a higher level. The roughness of the second connecting surface 6222 can also be set to a higher level, so that the surface of the second connecting surface 6222 changes from specular reflection to diffuse reflection, thereby suppressing the intensity and amount of light leakage. The roughness of one or two surfaces of the second connecting surface 6222 and a portion of the first connecting surface 6221 near the second connecting surface 6222 (for example, the portion between the third point C and the fourth point D) can also be set to a higher level, which can also help reduce light leakage. The roughness of the entire edge outer surface 622 can also be set to a higher level.

[0168] When a second light-shielding layer 64 is provided, the second light-shielding layer 64 can be provided on at least one of the first connecting surface 6221 and the second connecting surface 6222, and the second light-shielding layer 64 can be provided on a portion of the first connecting surface 6221 (for example, the portion between the third point C and the fourth point D) and the second connecting surface 6222; the light leakage rate can be further reduced by blocking the light through the second light-shielding layer 64.

[0169] When a first light-shielding layer 63 is provided, the first light-shielding layer 63 can be provided on at least one surface of the first part 6211, the second part 6212, the third part 6213 and the fourth part 6214, and the light leakage rate can be further reduced by blocking the light through the first light-shielding layer 63.

[0170] 15 , the edge outer surface 622 may include a first connection surface 6221 . Since the edge portion 62 is annular, the edge outer surface 622 is configured to be annular, so that the first connection surface 6221 is annular.

[0171] The first connecting surface 6221 is connected to the main body 61 and is configured as an arcuate surface that convexly faces away from the edge inner surface 621. The central cross-section of the first connecting surface 6221 in the second direction Y may include two symmetrically arranged spline curves L, with the axes of symmetry of the two spline curves L being the central axis of the cover plate 6 extending along the second direction Y.

[0172] The spline curve L may include a first point A, a second point B, a third point C, and a fourth point D. The first point A is the connection point between the first connecting surface 6221 and the main body outer surface 612. The first connecting surface 6221 and the main body outer surface 612 are tangentially connected at the first point A, thereby achieving a smooth transition between the first connecting surface 6221 and the main body outer surface 612 at the first point A. The side of the first connecting surface 6221 away from the main body 61 is connected to the edge inner surface 621. Specifically, the fourth point D is the connection point between the first connecting surface 6221 and the edge inner surface 621.

[0173] A distance K1 between the second point B and the first point A in the first direction X is greater than or equal to 2.1 mm and less than or equal to 2.3 mm. For example, the distance K1 between the second point B and the first point A in the first direction X may be 2.13 mm, 2.15 mm, 2.18 mm, 2.2 mm, 2.22 mm, 2.25 mm, 2.27 mm, etc. A distance H1 between the second point B and the first point A in the second direction Y is greater than or equal to 0.3 mm and less than or equal to 0.4 mm. For example, the distance H1 between the second point B and the first point A in the second direction Y may be 0.32 mm, 0.35 mm, 0.37 mm, etc.

[0174] A distance K2 between the third point C and the first point A in the first direction X is greater than or equal to 3.8 mm and less than or equal to 4 mm. For example, the distance K2 between the third point C and the first point A in the first direction X may be 3.82 mm, 3.85 mm, 3.87 mm, 3.9 mm, 3.93 mm, 3.95 mm, 3.98 mm, etc. A distance H2 between the third point C and the first point A in the second direction Y is greater than or equal to 1.55 mm and less than or equal to 1.65 mm. For example, the distance H2 between the third point C and the first point A in the second direction Y may be 1.58 mm, 1.6 mm, 1.63 mm, etc.

[0175] The portion included in the edge inner surface 621 is the same as the portion included in the edge inner surface 621 shown in Figure 4, and therefore, it will not be repeated here; the difference is that the ring width of the fourth portion 6214 is larger, specifically, the ring width of the fourth portion 6214 is greater than or equal to 1.1 mm and less than or equal to 1.55 mm. For example, the ring width of the fourth portion 6214 can be 1.15 mm, 1.2 mm, 1.25 mm, 1.3 mm, 1.35 mm, 1.4 mm, 1.45 mm, 1.5 mm, etc.

[0176] In this case, the roughness of the second part 6212, the third part 6213 and the fourth part 6214 is set to be larger; the first light-shielding layer 63 can be set in the second part 6212, the third part 6213 and the fourth part 6214. After the display device is formed, the first light-shielding layer 63 is set inside, and there is no reliability problem such as the first light-shielding layer 63 being worn due to long-term exposure, thereby increasing the light leakage rate.

[0177] 16 and 17 , the arc-shaped change of the edge outer surface 622 causes almost all of the original leaked light to be totally reflected, thereby avoiding this part of the leaked light source, thereby reducing the light leakage rate. In addition, the light on the surfaces of the second part 6212, the third part 6213 and the fourth part 6214 is changed from mirror reflection to diffuse reflection, and the intensity and amount of the leaked light source are suppressed. According to simulation detection, the light leakage rate can be reduced to 0.07% to 0.08%.

[0178] In other exemplary embodiments of the present disclosure, the roughness of one or two surfaces of the second portion 6212, the third portion 6213, and the fourth portion 6214 can be set to a higher level, which can also help reduce light leakage. The roughness of the entire edge inner surface 621 can also be set to a higher level. The roughness of a portion of the first connecting surface 6221 near the second connecting surface 6222 (for example, the portion between the third point C and the fourth point D, or the portion between the second point B and the fourth point D) can also be set to a higher level, so that a portion of the surface of the first connecting surface 6221 changes from specular reflection to diffuse reflection, thereby suppressing the intensity and amount of light leakage. The roughness of the entire edge outer surface 622 can also be set to a higher level.

[0179] When a second light shielding layer 64 is provided, the second light shielding layer 64 can be provided on a portion of the first connecting surface 6221 (for example, the portion between the third point C and the fourth point D, or the portion between the second point B and the fourth point D); the light leakage rate can be further reduced by blocking the light through the second light shielding layer 64. Of course, the second light shielding layer 64 can also be provided on the entire first connecting surface 6221.

[0180] When a first light-shielding layer 63 is provided, the first light-shielding layer 63 can be provided on at least one surface of the first part 6211, the second part 6212, the third part 6213 and the fourth part 6214, and the light leakage rate can be further reduced by blocking the light through the first light-shielding layer 63.

[0181] 18 , the edge outer surface 622 may include a first connection surface 6221 . Since the edge portion 62 is annular, the edge outer surface 622 is configured to be annular, so that the first connection surface 6221 is annular.

[0182] The first connecting surface 6221 is connected to the main body 61 and is configured as an arcuate surface that convexly faces away from the edge inner surface 621. The central cross-section of the first connecting surface 6221 in the second direction Y may include two symmetrically arranged spline curves L, with the axes of symmetry of the two spline curves L being the central axis of the cover plate 6 extending along the second direction Y.

[0183] The spline curve L may include a first point A, a second point B, a third point C, and a fourth point D. The first point A is the connection point between the first connecting surface 6221 and the main body outer surface 612. The first connecting surface 6221 and the main body outer surface 612 are tangentially connected at the first point A, thereby achieving a smooth transition between the first connecting surface 6221 and the main body outer surface 612 at the first point A. The side of the first connecting surface 6221 away from the main body 61 is connected to the edge inner surface 621. Specifically, the fourth point D is the connection point between the first connecting surface 6221 and the edge inner surface 621.

[0184] A distance K1 between the second point B and the first point A in the first direction X is greater than or equal to 1.8 mm and less than or equal to 2.15 mm. For example, the distance K1 between the second point B and the first point A in the first direction X may be 1.83 mm, 1.85 mm, 1.88 mm, 1.9 mm, 1.92 mm, 1.95 mm, 1.97 mm, 2 mm, 2.03 mm, 2.05 mm, 2.08 mm, 2.1 mm, 2.12 mm, etc. A distance H1 between the second point B and the first point A in the second direction Y is greater than or equal to 0.3 mm and less than or equal to 0.4 mm. For example, the distance H1 between the second point B and the first point A in the second direction Y may be 0.32 mm, 0.35 mm, 0.37 mm, etc.

[0185] A distance K2 between the third point C and the first point A in the first direction X is greater than or equal to 3.8 mm and less than or equal to 4 mm. For example, the distance K2 between the third point C and the first point A in the first direction X may be 3.82 mm, 3.85 mm, 3.87 mm, 3.9 mm, 3.93 mm, 3.95 mm, 3.98 mm, etc. A distance H2 between the third point C and the first point A in the second direction Y is greater than or equal to 1.55 mm and less than or equal to 1.65 mm. For example, the distance H2 between the third point C and the first point A in the second direction Y may be 1.58 mm, 1.6 mm, 1.63 mm, etc.

[0186] In FIG18 , relative to the first connection surface 6221 in FIG15 , the position of the second point B is moved toward the central axis of the cover plate 6 along the first direction X by 0.15 mm to 0.30 mm.

[0187] The portion included in the edge inner surface 621 is the same as the portion included in the edge inner surface 621 shown in Figure 4, and therefore, it will not be repeated here; the difference is that the ring width of the fourth portion 6214 is larger, specifically, the ring width of the fourth portion 6214 is greater than or equal to 1.1 mm and less than or equal to 1.55 mm. For example, the ring width of the fourth portion 6214 can be 1.15 mm, 1.2 mm, 1.25 mm, 1.3 mm, 1.35 mm, 1.4 mm, 1.45 mm, 1.5 mm, etc.

[0188] In this case, the roughness of the second part 6212, the third part 6213 and the fourth part 6214 is set to be larger; the first light-shielding layer 63 can be set in the second part 6212, the third part 6213 and the fourth part 6214. After the display device is formed, the first light-shielding layer 63 is set inside, and there is no reliability problem such as the first light-shielding layer 63 being worn due to long-term exposure, thereby increasing the light leakage rate.

[0189] 19 and 20 , the arc-shaped change of the edge outer surface 622 causes almost all of the original leaked light to be totally reflected, thereby avoiding this part of the leaked light source, thereby reducing the light leakage rate. In addition, the light on the surfaces of the second part 6212, the third part 6213 and the fourth part 6214 is changed from mirror reflection to diffuse reflection, and the intensity and amount of the leaked light source are suppressed. After simulation detection, the light leakage rate can be reduced to 0.03% to 0.04%.

[0190] Of course, in other exemplary embodiments of the present disclosure, the roughness of one or two of the second portion 6212, the third portion 6213, and the fourth portion 6214 can also be set to a higher level, which can also help reduce light leakage. Alternatively, the roughness of the entire edge inner surface 621 can be set to a higher level. Alternatively, the roughness of a portion of the first connecting surface 6221 near the second connecting surface 6222 (e.g., the portion between the third point C and the fourth point D, or the portion between the second point B and the fourth point D) can be set to a higher level, so that a portion of the surface of the first connecting surface 6221 changes from specular reflection to diffuse reflection, thereby suppressing the intensity and amount of light leakage. Alternatively, the roughness of the entire edge outer surface 622 can be set to a higher level.

[0191] When a second light shielding layer 64 is provided, the second light shielding layer 64 can be provided on a portion of the first connecting surface 6221 (for example, the portion between the third point C and the fourth point D, or the portion between the second point B and the fourth point D); the light leakage rate can be further reduced by blocking the light through the second light shielding layer 64. Of course, the second light shielding layer 64 can also be provided on the entire first connecting surface 6221.

[0192] When a first light-shielding layer 63 is provided, the first light-shielding layer 63 can be provided on at least one surface of the first part 6211, the second part 6212, the third part 6213 and the fourth part 6214, and the light leakage rate can be further reduced by blocking the light through the first light-shielding layer 63.

[0193] 12 to 20 , the cylindrical portion of the edge outer surface 622 is removed, so that the edge outer surface 622 is all an arc surface convex toward the side away from the edge inner surface 621 , so that the originally leaked light is almost completely reflected, thereby avoiding this part of the leaked light source and reducing the light leakage rate.

[0194] As shown in Figure 21, in some other example embodiments of the present disclosure, the edge outer surface 622 may include a first connecting surface 6221 and a second connecting surface 6222. Since the edge portion 62 is annular, the edge outer surface 622 is set to be annular, so that the first connecting surface 6221 and the second connecting surface 6222 are both annular.

[0195] The first connecting surface 6221 is connected to the main body 61, and the first connecting surface 6221 is set to be an arc surface that bulges toward the side away from the edge inner surface 621; specifically, the central cross-section of the first connecting surface 6221 in the second direction Y may include two symmetrically arranged spline curves L, and the symmetry axes of the two spline curves L are the central axis of the cover plate 6 extending along the second direction Y.

[0196] The spline curve L may include a first point A, a second point B, and a third point C. The first point A is the connection point between the first connecting surface 6221 and the main body outer surface 612. The first connecting surface 6221 and the main body outer surface 612 are tangentially connected at the first point A, so that the first connecting surface 6221 and the main body outer surface 612 are smoothly connected at the first point A. The third point C is the connection point between the first connecting surface 6221 and the second connecting surface 6222.

[0197] A distance K1 between the second point B and the first point A in the first direction X is greater than or equal to 2.1 mm and less than or equal to 2.3 mm. For example, the distance K1 between the second point B and the first point A in the first direction X may be 2.13 mm, 2.15 mm, 2.18 mm, 2.2 mm, 2.22 mm, 2.25 mm, 2.27 mm, etc. A distance H1 between the second point B and the first point A in the second direction Y is greater than or equal to 0.3 mm and less than or equal to 0.4 mm. For example, the distance H1 between the second point B and the first point A in the second direction Y may be 0.32 mm, 0.35 mm, 0.37 mm, etc.

[0198] A distance K2 between the third point C and the first point A in the first direction X is greater than or equal to 4 mm and less than or equal to 4.2 mm. For example, the distance K2 between the third point C and the first point A in the first direction X may be 4.02 mm, 4.05 mm, 4.07 mm, 4.1 mm, 4.13 mm, 4.15 mm, 4.18 mm, etc. A distance H2 between the third point C and the first point A in the second direction Y is greater than or equal to 1.65 mm and less than or equal to 1.75 mm. For example, the distance H2 between the third point C and the first point A in the second direction Y may be 1.68 mm, 1.7 mm, 1.73 mm, etc.

[0199] The second connecting surface 6222 is connected to the side of the first connecting surface 6221 away from the main body 61. The second connecting surface 6222 is configured as an inclined surface with a set angle α with the display surface of the display module 100. The distance between the second connecting surface 6222 and the central axis of the cover plate 6 increases as the distance between the second connecting surface 6222 and the main body inner surface 611 decreases. In other words, the closer the second connecting surface 6222 is to the main body inner surface 611, the greater the distance between the second connecting surface 6222 and the central axis of the cover plate 6. Specifically, the set angle α between the second connecting surface 6222 and the display surface of the display module 100 is greater than or equal to 120 degrees and less than or equal to 140 degrees. For example, the set angle α between the second connecting surface 6222 and the display surface of the display module 100 can be 122 degrees, 125 degrees, 127 degrees, 130 degrees, 133 degrees, 135 degrees, 138 degrees, etc.

[0200] The ring width K3 of the second connecting surface 6222 is greater than or equal to 0.3 mm and less than or equal to 0.5 mm. For example, the ring width K3 of the second connecting surface 6222 can be 0.33 mm, 0.35 mm, 0.38 mm, 0.4 mm, 0.42 mm, 0.45 mm, 0.47 mm, etc.

[0201] A side of the second connecting surface 6222 away from the first connecting surface 6221 is connected to the edge inner surface 621 .

[0202] The specific structure of the edge inner surface 621 is the same as that shown in FIG. 4 , and therefore, will not be described again here.

[0203] In this case, the roughness of the second connecting surface 6222, the second part 6212, the third part 6213 and the fourth part 6214 is set to be larger; and the first shading layer 63 can be set in the second part 6212, the third part 6213 and the fourth part 6214; the second shading layer 64 can be set on the second connecting surface 6222. After the display device is formed, the second connecting surface 6222 and the second shading layer 64 are embedded in the outer shell, and there is no reliability problem such as the second shading layer 64 being worn out due to long-term exposure, thereby increasing the light leakage rate.

[0204] 22 and 23 , the arc-shaped change of the edge outer surface 622 causes almost all of the original leaked light to be totally reflected, thereby avoiding this part of the leaked light source, thereby reducing the light leakage rate. In addition, the light on the surface of the second connecting surface 6222, the second part 6212, the third part 6213 and the fourth part 6214 is changed from mirror reflection to diffuse reflection, and the intensity and amount of the leaked light source are suppressed. Even if there is some leaked light, it is absorbed by the first light-shielding layer 63 and the second light-shielding layer 64. After simulation detection, the light leakage rate can be reduced to 0.03% to 0.05%.

[0205] Of course, in other exemplary embodiments of the present disclosure, the roughness of one or two surfaces of the second portion 6212, the third portion 6213, and the fourth portion 6214 can be increased to reduce light leakage. Alternatively, the roughness of the entire edge inner surface 621 can be increased. Alternatively, the roughness of one or two surfaces of the second connecting surface 6222 and a portion of the first connecting surface 6221 near the second connecting surface 6222 (e.g., the portion between the third point C and the second point B) can be increased to reduce light leakage. Alternatively, the roughness of the entire edge outer surface 622 can be increased. The first light shielding layer 63 and the second light shielding layer 64 can also be omitted.

[0206] When a second light-shielding layer 64 is provided, the second light-shielding layer 64 can also be provided on a portion of the first connecting surface 6221 (for example, the portion between the third point C and the second point B) and the second connecting surface 6222; the light leakage rate can be further reduced by blocking the light through the second light-shielding layer 64.

[0207] When a first light-shielding layer 63 is provided, the first light-shielding layer 63 can be provided on at least one surface of the first part 6211, the second part 6212, the third part 6213 and the fourth part 6214, and the light leakage rate can be further reduced by blocking the light through the first light-shielding layer 63.

[0208] As shown in FIG. 24 , in some other exemplary embodiments of the present disclosure, the edge portion 62 may include a connecting ring 62a and a supporting tube 62b; the connecting ring 62a is connected to the main body 61 and is parallel to the main body inner surface 611; the supporting tube 62b is connected to a side of the connecting ring 62a away from the main body 61 and is perpendicular to the main body inner surface 611. The connecting ring 62a may include a first portion 6211 and a first connecting surface 6221, and the supporting tube 62b may include at least a third portion 6213, a fifth portion 6215, and a third connecting surface 6223.

[0209] Specifically, the edge outer surface 622 may include a first connection surface 6221, a second connection surface 6222, a third connection surface 6223, and a fourth connection surface 6224. Since the edge portion 62 is annular, the edge outer surface 622 is configured to be annular, so that the first connection surface 6221, the second connection surface 6222, the third connection surface 6223, and the fourth connection surface 6224 are all annular.

[0210] The first connection surface 6221 is connected to the main body 61. Specifically, the first connection surface 6221 is connected to the main body outer surface 612. The first connection surface 6221 is configured as a plane coplanar with the main body inner surface 611. When the main body outer surface 612 is a plane, the first connection surface 6221 is coplanar with the main body outer surface 612. The ring width K4 of the first connection surface 6221 is greater than or equal to 3.9 mm and less than or equal to 4.3 mm. For example, the ring width K4 of the first connection surface 6221 can be 3.93 mm, 3.95 mm, 3.98 mm, 4 mm, 4.02 mm, 4.05 mm, 4.07 mm, 4.1 mm, 4.13 mm, 4.15 mm, 4.18 mm, 4.2 mm, 4.22 mm, 4.25 mm, 4.27 mm, etc.

[0211] The second connecting surface 6222 is connected to the side of the first connecting surface 6221 away from the main body 61. Moreover, the second connecting surface 6222 and the first connecting surface 6221 are tangentially connected at the connection point, thereby achieving a smooth transition between the second connecting surface 6222 and the first connecting surface 6221 at the connection point. The second connecting surface 6222 is configured as a rounded arc surface. The radius of the second connecting surface 6222 is greater than or equal to 0.09 mm and less than or equal to 0.11 mm. For example, the radius of the second connecting surface 6222 can be 0.093 mm, 0.095 mm, 0.098 mm, 0.1 mm, 0.102 mm, 0.105 mm, 0.107 mm, etc. The central angle of the second connecting surface 6222 is greater than or equal to 85 degrees and less than or equal to 95 degrees. For example, the central angle of the second connecting surface 6222 can be 88 degrees, 90 degrees, 92 degrees, etc.

[0212] The third connecting surface 6223 is connected to the side of the second connecting surface 6222 away from the first connecting surface 6221. Furthermore, the third connecting surface 6223 and the second connecting surface 6222 are tangentially connected at the connection point, thereby achieving a smooth transition between the third connecting surface 6223 and the second connecting surface 6222 at the connection point. The third connecting surface 6223 is configured as a cylindrical surface. The height H4 of the third connecting surface 6223 in the second direction Y is greater than or equal to 2 mm and less than or equal to 3 mm. For example, the height H4 of the third connecting surface 6223 in the second direction Y can be 2.2 mm, 2.4 mm, 2.6 mm, 2.8 mm, etc.

[0213] The fourth connecting surface 6224 is connected to the side of the third connecting surface 6223 away from the second connecting surface 6222. Furthermore, the fourth connecting surface 6224 and the third connecting surface 6223 are tangentially connected at the connection point, thereby achieving a smooth transition between the fourth connecting surface 6224 and the third connecting surface 6223 at the connection point. The fourth connecting surface 6224 can be configured as a rounded arc surface, with a radius greater than or equal to 0.09 mm and less than or equal to 0.11 mm. For example, the radius of the fourth connecting surface 6224 can be 0.093 mm, 0.095 mm, 0.098 mm, 0.1 mm, 0.102 mm, 0.105 mm, 0.107 mm, etc. The central angle of the fourth connecting surface 6224 is greater than or equal to 85 degrees and less than or equal to 95 degrees. For example, the central angle of the fourth connecting surface 6224 can be 88 degrees, 90 degrees, 92 degrees, etc.

[0214] The side of the fourth connecting surface 6224 away from the third connecting surface 6223 is connected to the edge inner surface 621, and the fourth connecting surface 6224 and the edge inner surface 621 are tangentially connected at the connection point, so that the fourth connecting surface 6224 and the edge inner surface 621 are smoothly transitioned and connected at the connection point.

[0215] Of course, in some other exemplary embodiments of the present disclosure, the fourth connecting surface 6224 can be configured as an inclined surface having a set angle with the display surface of the display module 100, such that the fourth connecting surface 6224 forms a chamfered angle on the outer edge of the edge portion 62. Specifically, the set angle between the fourth connecting surface 6224 and the display surface of the display module 100 can be greater than or equal to 120 degrees and less than or equal to 140 degrees. For example, the set angle between the fourth connecting surface 6224 and the display surface of the display module 100 can be 122 degrees, 125 degrees, 127 degrees, 130 degrees, 133 degrees, 135 degrees, 138 degrees, etc. The ring width of the fourth connecting surface 6224 can be greater than or equal to 0.1 mm and less than or equal to 0.2 mm. For example, the ring width of the fourth connecting surface 6224 can be 0.13 mm, 0.15 mm, 0.18 mm, etc.

[0216] 24 , in this exemplary embodiment, the edge inner surface 621 may include a first portion 6211, a second portion 6212, a third portion 6213, a fourth portion 6214, and a fifth portion 6215. Since the edge portion 62 is annular, the edge inner surface 621 is configured to be annular, such that the first portion 6211, the second portion 6212, the third portion 6213, the fourth portion 6214, and the fifth portion 6215 are all annular.

[0217] The first portion 6211 is connected to the main body 61. Specifically, the first portion 6211 is connected to the main body inner surface 611. The first portion 6211 is configured to be flat and coplanar with the main body inner surface 611. The ring width W1 of the first portion 6211 is greater than or equal to 1.5 mm and less than or equal to 2.5 mm. For example, the ring width W1 of the first portion 6211 can be 1.6 mm, 1.8 mm, 2.0 mm, 2.2 mm, 2.4 mm, etc.

[0218] The second portion 6212 is connected to the side of the first portion 6211 away from the main body 61. Furthermore, the second portion 6212 and the first portion 6211 are tangentially connected at the connection point, thereby achieving a smooth transition between the second portion 6212 and the first portion 6211 at the connection point. The second portion 6212 is configured as a rounded arc surface. The radius of the second portion 6212 is greater than or equal to 0.09 mm and less than or equal to 0.11 mm. For example, the radius of the second portion 6212 can be 0.093 mm, 0.095 mm, 0.098 mm, 0.1 mm, 0.102 mm, 0.105 mm, 0.107 mm, etc. The central angle of the second portion 6212 is greater than or equal to 85 degrees and less than or equal to 95 degrees. For example, the central angle of the second portion 6212 can be 88 degrees, 90 degrees, 92 degrees, etc.

[0219] The third portion 6213 is connected to the side of the second portion 6212 away from the first portion 6211. Furthermore, the third portion 6213 and the second portion 6212 are tangentially connected at the connection point, thereby achieving a smooth transition between the third portion 6213 and the second portion 6212 at the connection point. The third portion 6213 is configured as a cylindrical surface. The height G1 of the third portion 6213 in the second direction Y is greater than or equal to 1 mm and less than or equal to 1.5 mm. For example, the height G1 of the third portion 6213 in the second direction Y can be 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, etc.

[0220] The fourth portion 6214 is connected to the side of the third portion 6213 away from the second portion 6212. Furthermore, the fourth portion 6214 and the third portion 6213 are tangentially connected at the connection point, thereby providing a smooth transition between the fourth portion 6214 and the third portion 6213 at the connection point. The radius of the fourth portion 6214 is greater than or equal to 0.09 mm and less than or equal to 0.11 mm. For example, the radius of the fourth portion 6214 can be 0.093 mm, 0.095 mm, 0.098 mm, 0.1 mm, 0.102 mm, 0.105 mm, 0.107 mm, etc. The central angle of the fourth portion 6214 is greater than or equal to 85 degrees and less than or equal to 95 degrees. For example, the central angle of the fourth portion 6214 can be 88 degrees, 90 degrees, 92 degrees, etc.

[0221] The fifth portion 6215 is connected to the side of the fourth portion 6214 away from the third portion 6213. Furthermore, the fifth portion 6215 and the fourth portion 6214 are tangentially connected at the connection point, thereby achieving a smooth transition between the fifth portion 6215 and the fourth portion 6214 at the connection point. The fifth portion 6215 is arranged as a plane parallel to the inner surface 611 of the main body. The ring width W2 of the fifth portion 6215 is greater than or equal to 0.8 mm and less than or equal to 1.2 mm. For example, the ring width W2 of the fifth portion 6215 can be 0.83 mm, 0.85 mm, 0.88 mm, 0.9 mm, 0.92 mm, 0.95 mm, 0.97 mm, 1 mm, 1.03 mm, 1.05 mm, 1.08 mm, 1.12 mm, 1.15 mm, 1.17 mm, etc.

[0222] The side of the fifth part 6215 away from the fourth part 6214 is connected to the edge outer surface 622. Specifically, the side of the fifth part 6215 away from the fourth part 6214 is connected to the fourth connecting surface 6224. Moreover, the fifth part 6215 and the fourth connecting surface 6224 are tangentially connected at the connection point, so that the fifth part 6215 and the fourth connecting surface 6224 are smoothly transitioned and connected at the connection point.

[0223] The fifth portion 6215 is used to bond to the bottom plate that fixes the display module 100 .

[0224] In this case, the roughness of the third part 6213, the fourth part 6214 and the fifth part 6215 can be set to be larger; the first light-shielding layer 63 can be set in the third part 6213, the fourth part 6214 and the fifth part 6215; the second light-shielding layer 64 can be set in the fourth connecting surface 6224. After the display device is formed, the fourth connecting surface 6224 and the second light-shielding layer 64 are embedded in the outer shell, and there is no reliability problem such as the second light-shielding layer 64 being worn due to long-term exposure, thereby increasing the light leakage rate.

[0225] 25 and 26 , the first connecting surface 6221 is set to be a plane, and the radius of the second portion 6212 is set to be smaller, almost forming a right angle, to prevent the first connecting surface 6221 from reflecting light to the second portion 6212. Most of the light reflected by the first connecting surface 6221 is absorbed by the first light-shielding layer 63 set in the fifth portion 6215, or is reflected by the fifth portion 6215 back to the front viewing angle to avoid light leakage, thereby reducing the light leakage rate to 0.1% to 0.15%.

[0226] Of course, in some other example embodiments of the present disclosure, the roughness of the fourth connecting surface 6224 can also be set to be larger, and the roughness of the second connecting surface 6222, the third connecting surface 6223 and the fourth connecting surface 6224 can also be set to be larger; the roughness of the second part 6212 can also be set to be larger; the first shading layer 63 can also be set in the second part 6212; the second shading layer 64 can also be set on the second connecting surface 6222 and the third connecting surface 6223.

[0227] In addition, the roughness of the edge inner surface 621 and the edge outer surface 622 can be set in other ways, and the first light shielding layer 63 and the second light shielding layer 64 can be set in other ways, which are not described here one by one. The first light shielding layer 63 and the second light shielding layer 64 can also be omitted.

[0228] Based on the same inventive concept, an exemplary embodiment of the present disclosure provides a display device, as shown in FIG27 , the display device may include a display module 100 and a cover plate 6; the cover plate 6 is arranged on the light-emitting side of the display module 100, and the cover plate 6 is any one of the cover plates 6 described above. The specific structure of the cover plate 6 has been described in detail above, so it will not be repeated here.

[0229] The display module 100 may include a display panel 10, which may be an OLED (Organic Electroluminescence Display) display panel 10, a QLED (Quantum Dot Light Emitting Diodes) display panel 10, etc., an LCD (Liquid Crystal Display), a Mini LED (Mini Light Emitting Diode) display panel 10, or a Mirco LED (Micro Light Emitting Diode) display panel 10; the display panel 10 has a light-emitting side and a non-light-emitting side, the light-emitting side and the non-light-emitting side are arranged opposite to each other, and a picture can be displayed on the light-emitting side, and the side that displays the picture is a display surface.

[0230] The following description will be made by taking the OLED display panel 10 as an example.

[0231] 28 , the display panel 10 may include a base substrate 1, a drive substrate 2, a light-emitting substrate 3, an encapsulation layer group 4, and a touch layer group 5. The material of the base substrate 1 may include an inorganic material, for example, the inorganic material may be glass, quartz, or metal. The material of the base substrate 1 may also include an organic material, for example, the organic material may be a resin material such as polyimide (PI), polycarbonate, polyacrylate, polyetherimide, polyethersulfone, polyethylene terephthalate, and polyethylene naphthalate. The base substrate 1 may be formed by a multilayer material layer, for example, the base substrate 1 may include a multilayer base material layer, and the material of the base material layer may be any of the above-mentioned materials. Of course, the base substrate 1 may also be set as a single layer, which may be any of the above-mentioned materials.

[0232] A shielding layer 21 can be provided on one side of the base substrate 1. Light incident from the base substrate 1 into the active layer generates photogenerated carriers in the active layer, significantly affecting the characteristics of the thin-film transistor (TFT), ultimately impacting the image quality of the display device. The shielding layer 21 can block light incident from the base substrate 1, thereby preventing it from affecting the characteristics of the TFT and thus the image quality of the display device. Depending on the type of TFT, the shielding layer 21 may be omitted.

[0233] A buffer layer 22 may also be provided on the side of the shielding layer 21 facing away from the base substrate 1. The buffer layer 22 serves to block moisture and impurity ions in the base substrate 1 (especially the organic material) and to add hydrogen ions to the subsequently formed active layer. The buffer layer 22 is made of an insulating material and can insulate the shielding layer 21 from the active layer. The buffer layer 22 may comprise silicon nitride, silicon oxide, or silicon oxynitride. Depending on the type of base substrate 1 or process conditions, the buffer layer 22 may be omitted.

[0234] An active layer is provided on the side of the buffer layer 22 facing away from the base substrate 1. The active layer may be made of polycrystalline silicon (P-Si) and may include a channel portion 231 and conductor portions provided at both ends of the channel portion 231. One of the two conductor portions is a source connection portion 232, and the other is a drain connection portion 233. A gate insulating layer 24 is provided on the side of the active layer facing away from the base substrate 1. A gate layer 25 is provided on the side of the gate insulating layer 24 facing away from the base substrate 1. The gate layer 25 may include a gate electrode 251 and a gate line (not shown in the figure).

[0235] An interlayer dielectric layer 26 is provided on the side of the gate layer 25 facing away from the base substrate 1, and a via is provided on the interlayer dielectric layer 26, which is connected to the source connection part 232 and the drain connection part 233; a first connecting conductor layer 27 is provided on the side of the interlayer dielectric layer 26 facing away from the base substrate 1, and the first connecting conductor layer 27 may include a source 271, a drain 272 and a data line (not shown in the figure), and the data line can be connected to the source 271, or it can be a part of the data line as the source 271; the source 271 is connected to the source connection part 232 through the via on the interlayer dielectric layer 26, and the drain 272 is connected to the drain connection part 233 through the via on the interlayer dielectric layer 26.

[0236] 28 , a planarization layer 28 is provided on the side of the first connection conductor layer 27 facing away from the substrate 1 . A via is provided on the planarization layer 28 , and the via is connected to the drain 272 . The channel portion 231 , the gate 251 , the source 271 , and the drain 272 form a thin film transistor.

[0237] It should be noted that the thin film transistors described in this specification are top-gate thin film transistors. In other exemplary embodiments of the present disclosure, the thin film transistors may also be bottom-gate or dual-gate thin film transistors, and their specific structures are not described in detail here. Furthermore, when using thin film transistors with opposite polarities or when the current direction changes during circuit operation, the functions of the "source electrode 271" and the "drain electrode 272" may be interchanged. Therefore, in this specification, the "source electrode 271" and the "drain electrode 272" may be interchanged.

[0238] 28 , a light-emitting substrate 3 is provided on the side of the planarization layer 28 facing away from the base substrate 1 . The light-emitting substrate 3 may include a first electrode 31 , a pixel definition layer 32 , a light-emitting layer group 33 and a second electrode 34 .

[0239] Specifically, a first electrode 31 is provided on the side of the planarization layer 28 facing away from the base substrate 1. The first electrode 31 is connected to the drain 272 of the driving backplane through a hole. The driving signal is provided to the first electrode 31 through the drain 272. The first electrode 31 can be an anode (pixel electrode).

[0240] A pixel definition layer 32 is provided on the side of the first electrode 31 facing away from the base substrate 1 . An opening is provided on the pixel definition layer 32 , which is connected to the first electrode 31 , so that at least part of the first electrode 31 is not covered by the pixel definition layer 32 .

[0241] A light-emitting layer group 33 is disposed on the side of the pixel definition layer 32 facing away from the substrate 1, with at least a portion of the light-emitting layer group 33 located within the opening. A second electrode 34 is disposed on the side of the light-emitting layer group 33 facing away from the substrate 1. The second electrode 34 can be a cathode (common electrode). Each light-emitting layer group 33 within an opening emits light to form a sub-pixel 35, such that the orthographic projection of the sub-pixel 35 on the substrate 1 is the orthographic projection of the light-emitting layer group 33 within the opening on the substrate 1. The display panel 10 may include multiple sub-pixels 35.

[0242] The light-emitting layer group 33 may include a hole injection layer, a hole transport layer, an organic light-emitting layer, an electron transport layer, and an electron injection layer stacked in sequence. The hole injection layer is in contact with the first electrode 31, and the electron injection layer is in contact with the second electrode 34. Of course, in other exemplary embodiments of the present disclosure, the light-emitting layer group 33 may include only the hole transport layer, the light-emitting layer, and the electron transport layer. The light-emitting layer group 33 may also have other structures, and its specific structure can be set as needed.

[0243] Holes are injected into the organic light-emitting layer from the first electrode 31 side, and electrons are injected into the organic light-emitting layer from the second electrode 34 side. Eventually, the holes and electrons recombine in the organic light-emitting layer to generate excitons. When the generated excitons relax from the excited state to the ground state, the OLED emits visible light.

[0244] In this exemplary embodiment, as shown in FIG. 28 , the display panel 10 may further include an encapsulation layer group 4, which is disposed on the side of the light-emitting substrate 3 facing away from the base substrate 1. For example, the encapsulation layer group 4 may include a first inorganic layer 41, an organic layer 42, and a second inorganic layer 43. The first inorganic layer 41 is disposed on the side of the second electrode 34 facing away from the base substrate 1. The first inorganic layer 41 may be made of silicon nitride (SiNx) or silicon oxynitride (SiNO), and may be formed on the side of the second electrode 34 facing away from the base substrate 1 by chemical vapor deposition (CVD). The organic layer 42 is disposed on the side of the first inorganic layer 41 facing away from the base substrate 1. The organic layer 42 may be made of an organic material such as acrylic or epoxy. The second inorganic layer 43 is disposed on the side of the organic layer 42 facing away from the base substrate 1. The second inorganic layer 43 can be made of silicon nitride (SiNx) or silicon oxynitride (SiNO), etc. The second inorganic layer 43 can be formed by chemical vapor deposition (CVD) on the side of the organic layer 42 facing away from the base substrate 1. The encapsulation layer group 4 can encapsulate the light-emitting layer group 33 to isolate it from corrosion caused by water / oxygen in the air.

[0245] In this exemplary embodiment, as shown in FIG. 28 , the display panel 10 may further include a touch layer group 5 . The touch layer group 5 is disposed on a side of the encapsulation layer group 4 facing away from the base substrate 1 .

[0246] The pixel arrangement of the display panel 10 includes, but is not limited to, a standard RGB arrangement, a PenTile arrangement, a Delta arrangement, a 2-in-1 arrangement, a Pearl arrangement, and a Diamond arrangement. The multiple sub-pixels 35 may include a red sub-pixel 35, a green sub-pixel 35, and a blue sub-pixel 35. The red sub-pixel 35 has an EL (electroluminescence) peak between 600 nm and 640 nm, the green sub-pixel 35 has an EL peak between 510 nm and 560 nm, and the blue sub-pixel 35 has an EL peak between 450 nm and 490 nm.

[0247] As shown in Figure 27, a polarizer 20 can be provided on the light-emitting side of the display panel 10. The polarizer 20 is bonded to the inner surface 611 of the main body of the cover plate 6 through an adhesive layer 30. The material of the adhesive layer 30 can be OCA (Optically Clear Adhesive) optical glue. A heat dissipation backplane 40 can be provided on the non-light-emitting side of the display panel 10. The heat dissipation backplane 40 can be a material having one or more properties of heat dissipation, light shielding, and buffering. An NFC (Near Field Communication) module 50 can be provided on the side of the heat dissipation backplane 40 away from the display panel 10. The NFC module 50 can be one or more combinations of NFC wireless transmission or wireless charging coils. A sensor 60 is provided on the side of the NFC module 50 away from the display panel 10. The sensor 60 can be one or more combinations of a temperature sensor, a camera, a pressure sensor, etc.

[0248] As shown in FIG29 , the display device may be a smartwatch, wherein the dial of the smartwatch is generally circular, the length G of the housing of the smartwatch is greater than or equal to 55 mm and less than or equal to 65 mm, and the thickness of the housing is greater than or equal to 8 mm and less than or equal to 10 mm. Of course, the smartwatch may also be configured as a rounded rectangle, an oval, or the like.

[0249] As shown in FIG30 , the outer diameter Φ1 of the dial cover 6 is greater than or equal to 42 mm and less than or equal to 46 mm, the inner diameter Φ2 of the dial cover 6 is greater than or equal to 38 mm and less than or equal to 42 mm, and the inner diameter Φ2 of the cover 6 is smaller than the outer diameter Φ1 of the cover 6. The diameter Φ3 of the display module 100 is greater than or equal to 37 mm and less than or equal to 41 mm, and the diameter Φ3 of the display module 100 is smaller than the inner diameter Φ2 of the cover 6. The diameter Φ4 of the display view area is greater than or equal to 36 mm and less than or equal to 40 mm, and the diameter Φ4 of the display view area (VA) is smaller than the diameter Φ3 of the display module 100. The difference (Φ4-Φ5) between the diameter Φ4 of the display view area and the diameter Φ5 of the display active area (AA) is greater than or equal to 0.05 mm and less than or equal to 0.35 mm.

[0250] Of course, the display device can also be electronic products such as smart phones, smart wearable devices (smart bracelets, smart glasses), and tablets.

[0251] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the appended claims.

Claims

1. A cover plate, wherein: include: A main body portion having a main body inner surface and a main body outer surface; An edge portion is connected to the periphery of the main body portion, the edge portion having an edge inner surface and an edge outer surface, the edge inner surface is closer to the display module than the edge outer surface; the roughness of at least part of the edge inner surface is greater than the roughness of the main body inner surface, and / or the roughness of at least part of the edge outer surface is greater than the roughness of the main body outer surface.

2. The cover plate according to claim 1, wherein: The edge portion is bent toward a side of the main body where the display module is disposed, so that at least a portion of the edge portion is configured as a curved structure.

3. The cover plate according to claim 2, wherein: The edge outer surface comprises: a first connecting surface connected to the main body, wherein the first connecting surface is configured as an arc surface convex toward a side away from the inner surface of the edge; a second connecting surface connected to a side of the first connecting surface away from the main body, the second connecting surface being configured as an arc surface convex toward a side away from the inner surface of the edge; a third connecting surface connected to a side of the second connecting surface away from the first connecting surface, wherein the third connecting surface is configured as a cylindrical surface; The fourth connecting surface is connected to the side of the third connecting surface away from the second connecting surface. The side of the fourth connecting surface away from the third connecting surface is connected to the inner surface of the edge. The fourth connecting surface is configured as a rounded arc surface.

4. The cover plate according to claim 2, wherein: The outer surface of the edge is configured as a curved surface, and the outer surface of the edge is convex toward a side away from the inner surface of the edge.

5. The cover plate according to claim 4, wherein: The edge outer surface comprises: a first connecting surface connected to the main body, wherein the first connecting surface is configured as an arc surface convex toward a side away from the inner surface of the edge; The second connecting surface is connected to the side of the first connecting surface away from the main body, the side of the second connecting surface away from the first connecting surface is connected to the inner surface of the edge, and the second connecting surface is configured as a rounded arc surface.

6. The cover plate according to claim 3 or 5, wherein: The central cross-section of the first connecting surface in the second direction includes two symmetrically arranged spline curves, and the axis of symmetry is the central axis of the cover plate extending along the second direction; the spline curve includes a first point, a second point, a third point, and a fourth point; the first point is the connection point between the first connecting surface and the outer surface of the main body, and the fourth point is the connection point between the first connecting surface and the second connecting surface; The distance between the second point and the first point in the first direction is greater than or equal to 2.1 mm and less than or equal to 2.3 mm, and the distance between the second point and the first point in the second direction is greater than or equal to 0.3 mm and less than or equal to 0.4 mm; the distance between the third point and the first point in the first direction is greater than or equal to 3.4 mm and less than or equal to 3.6 mm, and the distance between the third point and the first point in the second direction is greater than or equal to 1.15 mm and less than or equal to 1.25 mm, the first direction is parallel to the display surface of the display module, and the second direction is perpendicular to the display surface of the display module.

7. The cover plate according to claim 4, wherein: The edge outer surface comprises: The first connecting surface is connected to the main body, and the side of the first connecting surface away from the main body is connected to the edge inner surface. The first connecting surface is configured as an arc surface convex toward the side away from the edge inner surface.

8. The cover plate according to claim 7, wherein: The roughness of a portion of the first connecting surface close to the inner surface of the edge is greater than the roughness of the outer surface of the main body.

9. The cover plate according to claim 7, wherein: The central cross-section of the first connecting surface in the second direction includes two symmetrically arranged spline curves, and the axis of symmetry is the central axis of the cover plate extending along the second direction; the spline curve includes a first point, a second point, a third point, and a fourth point; the first point is the connection point between the first connecting surface and the outer surface of the main body, and the fourth point is the connection point between the first connecting surface and the inner surface of the edge; The distance between the second point and the first point in the first direction is greater than or equal to 2.1 mm and less than or equal to 2.3 mm, and the distance between the second point and the first point in the second direction is greater than or equal to 0.3 mm and less than or equal to 0.4 mm; the distance between the third point and the first point in the first direction is greater than or equal to 3.8 mm and less than or equal to 4 mm, and the distance between the third point and the first point in the second direction is greater than or equal to 1.55 mm and less than or equal to 1.65 mm, the first direction is parallel to the display surface of the display module, and the second direction is perpendicular to the display surface of the display module; Alternatively, the distance between the second point and the first point in the first direction is greater than or equal to 1.8 mm and less than or equal to 2.15 mm, the distance between the second point and the first point in the second direction is greater than or equal to 0.3 mm and less than or equal to 0.4 mm; the distance between the third point and the first point in the first direction is greater than or equal to 3.8 mm and less than or equal to 4 mm, the distance between the third point and the first point in the first direction is greater than or equal to 3.8 mm and less than or equal to 4 mm, The distance between the points in the second direction is greater than or equal to 1.55 mm and less than or equal to 1.65 mm. The first direction is parallel to the display surface of the display module, and the second direction is perpendicular to the display surface of the display module.

10. The cover plate according to claim 2, wherein: The edge outer surface comprises: a first connecting surface connected to the main body, wherein the first connecting surface is configured as an arc surface convex toward a side away from the inner surface of the edge; The second connecting surface is connected to the side of the first connecting surface away from the main body, the side of the second connecting surface away from the first connecting surface is connected to the inner surface of the edge, and the second connecting surface is set to be an inclined surface with a set angle to the display surface of the display module.

11. The cover plate according to claim 5 or 10, wherein: The roughness of at least one of the second connecting surface and a portion of the first connecting surface close to the second connecting surface is greater than the roughness of the outer surface of the main body.

12. The cover plate according to claim 10, wherein: The central cross-section of the first connecting surface in the second direction includes two symmetrically arranged spline curves, and the axis of symmetry is the central axis of the cover plate extending along the second direction; the spline curve includes a first point, a second point, and a third point; the first point is the connection point between the first connecting surface and the outer surface of the main body, and the third point is the connection point between the first connecting surface and the second connecting surface; The distance between the second point and the first point in the first direction is greater than or equal to 2.1 mm and less than or equal to 2.3 mm, and the distance between the second point and the first point in the second direction is greater than or equal to 0.3 mm and less than or equal to 0.4 mm; the distance between the third point and the first point in the first direction is greater than or equal to 4.0 mm and less than or equal to 4.2 mm, and the distance between the third point and the first point in the second direction is greater than or equal to 1.65 mm and less than or equal to 1.75 mm, the first direction is parallel to the display surface of the display module, and the second direction is perpendicular to the display surface of the display module.

13. The cover plate according to claim 10, wherein: A set included angle between the second connecting surface and the display surface of the display module is greater than or equal to 120 degrees and less than or equal to 140 degrees.

14. The cover plate according to any one of claims 3, 5 and 10, wherein: The inner surface of the edge comprises: a first portion connected to the main body, wherein the first portion is configured to be a plane coplanar with an inner surface of the main body; The second part is connected to the side of the first part away from the main body. Partially configured as an arc surface that is recessed toward one side of the outer surface of the edge; A third portion is connected to a side of the second portion away from the first portion, and the third portion is configured as a rounded arc surface; a fourth portion connected to a side of the third portion away from the second portion, the fourth portion being arranged as a plane parallel to the inner surface of the main body, and the side of the fourth portion away from the third portion being connected to the outer surface of the edge; Among them, the ring width of the first part is greater than or equal to 1.5 mm and less than or equal to 2.5 mm; the second part is set to a circular arc surface, the central angle of the second part is greater than or equal to 85 degrees and less than or equal to 95 degrees, and the radius of the second part is greater than or equal to 0.9 mm and less than or equal to 1.1 mm; the third part is set to a circular arc surface, the central angle of the third part is greater than or equal to 85 degrees and less than or equal to 95 degrees, and the radius of the third part is greater than or equal to 0.09 mm and less than or equal to 0.11 mm; the ring width of the fourth part is greater than or equal to 0.8 mm and less than or equal to 1.2 mm.

15. The cover plate according to claim 14, wherein: The roughness of at least one of the second portion, the third portion, and the fourth portion is greater than the roughness of the inner surface of the body.

16. The cover plate according to claim 7, wherein: The inner surface of the edge comprises: a first portion connected to the main body, wherein the first portion is configured to be a plane coplanar with an inner surface of the main body; a second portion connected to a side of the first portion away from the main body, the second portion being configured as an arc surface concave toward one side of the outer surface of the edge; A third portion is connected to a side of the second portion away from the first portion, and the third portion is configured as a rounded arc surface; a fourth portion connected to a side of the third portion away from the second portion, the fourth portion being arranged as a plane parallel to the inner surface of the main body, and the side of the fourth portion away from the third portion being connected to the outer surface of the edge; The ring width of the first portion is greater than or equal to 1.5 mm and less than or equal to 2.5 mm; the second portion is configured as an arc surface, the central angle of the second portion is greater than or equal to 85 degrees and less than or equal to 95 degrees, and the radius of the second portion is greater than or equal to 0.9 mm and less than or equal to 1.1 mm; the third portion is configured as an arc surface, the central angle of the third portion is greater than or equal to 85 degrees and less than or equal to 95 degrees, and the radius of the third portion is greater than or equal to 0.09 mm and less than or equal to 0.11 mm; The ring width of the fourth portion is greater than or equal to 1.1 mm and less than or equal to 1.55 mm.

17. The cover plate according to claim 16, wherein: The roughness of at least one of the second portion, the third portion, and the fourth portion is greater than the roughness of the inner surface of the body.

18. The cover plate according to claim 2, wherein: The edge portion includes: A connecting ring connected to the main body, wherein the connecting ring is parallel to the inner surface of the main body; The support tube is connected to a side of the connecting ring away from the main body, and the support tube is perpendicular to the inner surface of the main body.

19. The cover plate according to claim 18, wherein: The edge outer surface comprises: a first connecting surface connected to the main body, wherein the first connecting surface is set as a plane parallel to the inner surface of the main body; a second connecting surface connected to a side of the first connecting surface away from the main body, the second connecting surface being configured as a rounded arc surface; a third connecting surface connected to a side of the second connecting surface away from the first connecting surface, wherein the third connecting surface is configured as a cylindrical surface; The fourth connecting surface is connected to the side of the third connecting surface away from the second connecting surface, and the side of the fourth connecting surface away from the third connecting surface is connected to the inner surface of the edge. The fourth connecting surface is set to a rounded arc surface or a slope having a set angle with the display surface of the display module.

20. The cover plate according to claim 3 or 19, wherein: The roughness of at least one of the second connecting surface, the third connecting surface, and the fourth connecting surface is greater than the roughness of the outer surface of the main body.

21. The cover plate according to claim 19, wherein The ring width of the first connecting surface is greater than or equal to 3.9 mm and less than or equal to 4.3 mm; the central angle of the second connecting surface is greater than or equal to 85 degrees and less than or equal to 95 degrees, and the radius of the second connecting surface is greater than or equal to 0.09 mm and less than or equal to 0.11 mm; the height of the third connecting surface in the second direction is greater than or equal to 2 mm and less than or equal to 3 mm; the central angle of the fourth connecting surface is greater than or equal to 85 degrees and less than or equal to 95 degrees, and the radius of the fourth connecting surface is greater than or equal to 0.09 mm and less than or equal to 0.11 mm, or, the angle between the fourth connecting surface and the display surface of the display module is greater than or equal to 120 degrees and less than or equal to 140 degrees, and the ring width of the fourth connecting surface is greater than or equal to 0.1 mm and less than or equal to 0.2 mm.

22. The cover plate according to claim 19, wherein The inner surface of the edge comprises: a first portion connected to the main body, the first portion being arranged as a plane coplanar with an inner surface of the main body, the first portion and the first connecting surface being included in the connecting ring; a second portion connected to a side of the first portion away from the main body, the second portion being configured as a rounded arc surface; a third portion connected to a side of the second portion away from the first portion, wherein the third portion is configured as a cylindrical surface; A fourth portion is connected to a side of the third portion away from the second portion, and the fourth portion is configured as a rounded arc surface; a fifth portion connected to a side of the fourth portion away from the third portion, the fifth portion being arranged as a plane parallel to the inner surface of the main body, the side of the fifth portion away from the fourth portion being connected to the outer surface of the edge, and at least the third portion, the fifth portion, and the third connecting surface being included in the support tube; Among them, the ring width of the first part is greater than or equal to 1.5 mm and less than or equal to 2.5 mm; the central angle of the second part is greater than or equal to 85 degrees and less than or equal to 95 degrees, and the radius of the second part is greater than or equal to 0.09 mm and less than or equal to 0.11 mm; the height of the third part in the second direction is greater than or equal to 1 mm and less than or equal to 1.5 mm; the central angle of the fourth part is greater than or equal to 85 degrees and less than or equal to 95 degrees, and the radius of the second part is greater than or equal to 0.09 mm and less than or equal to 0.11 mm; the ring width of the fifth part is greater than or equal to 0.8 mm and less than or equal to 1.2 mm.

23. The cover plate according to claim 22, wherein: The roughness of at least one of the second portion, the third portion, the fourth portion, and the fifth portion is greater than the roughness of the inner surface of the body.

24. The cover plate according to claim 1, wherein The arithmetic mean deviation Ra of the contour of at least part of the inner surface of the edge is greater than or equal to 0.1 and less than 1.6, and the arithmetic mean deviation Ra of the contour of at least part of the outer surface of the edge is greater than or equal to 0.1 and less than 1.6; or, the maximum height Rz of the contour of at least part of the inner surface of the edge is greater than or equal to 0.8 and less than 6.3, and the maximum height Rz of the contour of at least part of the outer surface of the edge is greater than or equal to 0.8 and less than 6.

3.

25. The cover plate according to claim 1, wherein The cover plate further comprises: A first light-shielding layer and / or a second light-shielding layer, wherein the first light-shielding layer is provided on at least a portion of the inner surface of the edge, and the second light-shielding layer is provided on at least a portion of the outer surface of the edge.

26. The cover plate according to claim 25, wherein: The thickness of the first light-shielding layer is greater than or equal to 0.1 mm and less than 0.5 mm, and the thickness of the second light-shielding layer is greater than or equal to 0.1 mm and less than 0.5 mm.

27. A display device, wherein: include: Display module; A cover plate is provided on the light-emitting side of the display module, wherein the cover plate is the cover plate according to any one of claims 1 to 26.

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