Cover plate, display module and display device

Abstract

The invention discloses a cover plate, a display module and a display device.The cover plate comprises a cover plate body and a protruding part connected with the cover plate body, and the protruding part comprises an end face away from one side of the cover plate body, a side wall surrounding the end face and an inclined face connecting the end face and the side wall; the included angle between the side wall of the protruding part and the direction perpendicular to the cover plate body is an acute angle.

Description

Technical Field

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

[0002] In related technologies, such as Figure 1 and Figure 2 As shown, the boss design of the glass cover in the electronic watch can effectively increase the proportion of the display area (Active Area, AA for short) in the dial. Specifically, by overlapping part of the cover with the face frame, the face frame and the cover are bonded from the edge area of ​​the cover, so that only the design of the protruding part of the cover needs to be considered, without considering the impact on other structures in the display module.

[0003] However, the way the cover plate and the face frame are overlapped makes the display area and the protrusion highly overlap. In the process of preparing the cover plate, the cutting surface on the edge of the protrusion of the cover plate is usually polished to be relatively round due to process requirements, so that the cutting surface has a magnifying glass effect. When the light path passes through the rounded cutting surface, it is easy to be refracted. Figure 3 As shown, optical patterns similar to moiré patterns are formed on the cut surface, which may affect the display quality of the electronic watch. Summary of the invention

[0004] The embodiments of the present application provide a cover plate, a display module and a display device to improve optical patterns similar to moiré patterns that appear on a cut surface of a protruding portion of the cover plate when the cover plate is used in a display module.

[0005] According to a first aspect of an embodiment of the present application, a cover plate is provided for a display module, the cover plate comprising: a cover plate main body and a protrusion connected to the cover plate main body, the protrusion comprising an end face away from a side of the cover plate main body and a side wall surrounding the end face, and an inclined surface connecting the end face and the side wall, wherein the angle between the side wall of the protrusion and the direction perpendicular to the cover plate main body is an acute angle.

[0006] In some embodiments, the angle between the side wall of the protrusion and the direction perpendicular to the cover plate body is in the range of 3°-10°.

[0007] In some embodiments, in a direction extending from a central area of ​​the cover plate to an edge area of ​​the cover plate, a distance between the inclined surface and the cover plate body decreases sequentially.

[0008] In some embodiments, the inclined surface is a curved surface.

[0009] In some embodiments, the thickness of the cover plate body is 1 / 4-1 / 3 of the thickness of the protruding portion.

[0010] According to a second aspect of an embodiment of the present application, a display module is provided, comprising:

[0011] A display panel, including a display area and a non-display area;

[0012] A cover plate, arranged on the light-emitting side of the display panel, the cover plate comprising a cover plate body and a protrusion connected to the cover plate body, the protrusion comprising an end face away from one side of the cover plate body and a side wall surrounding the end face, and an inclined face connecting the end face and the side wall, and the angle between the side wall of the protrusion and the direction perpendicular to the cover plate body is an acute angle;

[0013] Wherein, the orthographic projection of the end surface of the protruding portion on the display panel at least covers the display area of ​​the display panel.

[0014] In some embodiments, the display module includes a light shielding layer, wherein the light shielding layer is disposed on a side of the cover plate close to the display panel and is disposed opposite to a non-display area of ​​the display panel.

[0015] In some embodiments, an orthographic projection of an end surface of the protrusion on the display panel covers a display area of ​​the display panel, and an orthographic projection of the light shielding layer on the display panel covers a non-display area of ​​the display panel.

[0016] In some embodiments, an orthographic projection of an end surface of the protrusion on the display panel covers a display area of ​​the display panel and a portion of the non-display area close to the display area.

[0017] In some embodiments, the orthographic projection of the light shielding layer on the display panel covers the non-display area of ​​the display panel; or

[0018] The orthographic projection of the light shielding layer on the display panel covers a portion of the non-display area of ​​the display panel, and the orthographic projection of the light shielding layer on the cover plate covers the inclined surface.

[0019] In some embodiments, the display module further includes a polarizing plate and an optical adhesive layer, wherein the polarizing plate is disposed on a side close to the display panel, and the optical adhesive layer is disposed on a side close to the cover plate.

[0020] According to a third aspect of the embodiments of the present application, a display device is provided, comprising the display module.

[0021] The cover plate provided in the embodiment of the present application adjusts the side wall of the protruding portion of the cover plate from being perpendicular to the cover plate body to being arranged at an acute angle to the direction perpendicular to the cover plate body, resulting in a reduction in the amount of light originally reflected by the side wall and then refracted from the inclined surface when the cover plate is applied to the light emitting surface side of the display panel of the display module, thereby effectively reducing the probability of moiré patterns appearing on the inclined surface, thereby improving the display problem of moiré patterns that appear when the cover plate is applied to the display module. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic structural diagram of an electronic watch in the related technology provided by this application;

[0023] Figure 2 A schematic cross-sectional view of a cover plate along AA in the related art provided by the present application;

[0024] Figure 3 A schematic diagram of a moiré pattern in a cutting area of ​​a cover plate in the related art provided by the present application;

[0025] Figure 4 A schematic partial structural cross-sectional view of a display module in the related art provided by the present application;

[0026] Figure 5 A schematic partial structural cross-sectional view of a cover plate provided in an embodiment of the present application;

[0027] Figure 6 A schematic partial structural cross-sectional view of another display module provided in an embodiment of the present application;

[0028] Figure 7 Provided for the embodiments of this application Figure 6 The optical path schematic diagram of the display module shown;

[0029] Figure 8 A schematic partial structural cross-sectional view of another display module provided in an embodiment of the present application;

[0030] Fig. 9 A schematic partial structural cross-sectional view of another display module provided in an embodiment of the present application;

[0031] Fig.10 Provided for the embodiments of this application Figure 8 A schematic diagram of the optical path in the cover plate of the display module shown;

[0032] Fig.11 Provided for the embodiments of this application Fig. 9 A schematic diagram of the light path in the cover plate of the display module. DETAILED DESCRIPTION

[0033] In order to better understand the technical solutions provided by the embodiments of this specification, the technical solutions of the embodiments of this specification are described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of this specification and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this specification, rather than limitations on the technical solutions of this specification. In the absence of conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.

[0034] In this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of more restrictions, the elements limited by the statement "comprise one..." do not exclude the existence of other identical elements in the process, method, article or equipment including the elements. The term "more than two" includes two or more than two situations.

[0035] In the related art, in order to reduce the size of the face frame of the electronic watch and increase the proportion of the display area, the face frame and the cover plate are usually overlapped. Under the premise of the same bonding width, the face frame can be designed to be narrower, so that the proportion of the display area can be increased. Among them, because the display area and the protruding part of the cover plate are highly overlapped, and there is a cutting area at the edge of the protruding part of the cover plate, such as Figure 4 As shown, theoretically, the cutting surface after cutting is a plane, that is, the end face 1 and the side wall 2 of the boss of the cover are connected by an inclined surface 3. However, due to the processing procedure of the cover and the requirements for appearance, the inclined surface 3 of the protruding part of the cover actually prepared is nearly arc-shaped, that is, the inclined surface 3 is an arc surface, and has a similar effect as a magnifying glass. When the display area of ​​the display panel in the electronic watch is illuminated, the light emitted by the display panel will be refracted through the inclined surface 3 of the protruding part of the cover to produce a magnifying effect, forming an optical pattern similar to a moiré pattern, which in turn affects the display quality of the electronic watch.

[0036] In view of this, the embodiments of the present application provide a cover plate, a display module and a display device, which can improve the display defects existing on the cut surface of the cover plate when the cover plate is applied to the display module.

[0037] In the first aspect of the embodiment of the present application, Figure 5As shown, a cover is provided, comprising: a cover body 100 and a protrusion 200 connected to the cover body, the protrusion 200 comprising an end face 210 away from one side of the cover body and a side wall 220 surrounding the end face, and an inclined surface 230 connecting the end face 210 and the side wall 220; wherein, an angle θ between the side wall 220 of the protrusion 200 and a direction perpendicular to the cover body 100 is an acute angle.

[0038] It can be understood that in this embodiment, the inclined surface 230 connecting the end surface 210 and the side wall 220 is a cutting surface formed after the edge area of ​​the end surface 210 is cut.

[0039] In this embodiment, by adjusting the side wall 220 of the protrusion 200 of the cover plate from the existing perpendicular to the cover plate body 100 to an acute angle with the direction perpendicular to the cover plate body 100, when the cover plate is applied to the display module and is arranged on the side of the light emitting surface of the display panel, the amount of light originally reflected by the side wall 220 and then refracted from the inclined surface 230 or the amount of light refracted by the inclined surface 230 is reduced, which can effectively reduce the probability of moiré patterns appearing on the inclined surface 230, thereby improving the display problem of moiré patterns that appear when the cover plate is applied to the display module.

[0040] In some embodiments, the angle between the side wall 220 of the protrusion 200 and the direction perpendicular to the cover plate body 100 is in the range of 3-10°.

[0041] In the present embodiment, the angle θ between the side wall 220 of the protrusion 200 and the direction perpendicular to the cover body 100 is in the range of 3°-10°. For example, the angle θ may be 4°, 5°, 6°, 7°, 8° or 9°, etc. It is understandable that if the angle θ between the side wall 220 of the protrusion 200 and the direction perpendicular to the cover body 100 is too small, then when the cover is applied to the display module, part of the light will still be reflected by the side wall 220 and then emitted from the inclined surface 230, thereby resulting in a high probability of moiré patterns appearing on the inclined surface of the cover. If the angle between the side wall 220 of the protrusion 200 and the direction perpendicular to the cover body 100 is too large, then the structure of the face frame above the cover needs to be adjusted to adapt to the structural changes of the side wall 220 of the protrusion 200, which will introduce new technical problems.

[0042] In this embodiment, by setting the angle θ between the side wall 220 of the protruding portion 200 and the direction perpendicular to the cover plate body 100 to be in the range of 3-10°, the display problem of moiré that occurs when the cover plate is applied to the display module can be improved. At the same time, since the angle adjustment range of the side wall 220 of the protruding portion 200 of the cover plate is small, there is no need to additionally adjust the structure of the face frame disposed above the cover plate. Preferably, the angle θ between the side wall 220 of the protruding portion 200 and the direction perpendicular to the cover plate body 100 is set to be in the range of 5-7°.

[0043] Further, in some embodiments, in a direction extending from the central area of ​​the cover plate to the edge area of ​​the cover plate, the distance between the inclined surface 230 and the cover plate body 100 decreases sequentially.

[0044] In this embodiment, the inclined surface 230 is a cutting surface formed by cutting the edge of the end surface 210 of the protruding portion 200, so the distance between the inclined surface 230 and the cover plate body 100 decreases in sequence in the direction extending from the central area of ​​the cover plate to the edge area of ​​the cover plate. Among them, the ratio of the area occupied by the edge of the end surface 210 of the protruding portion 200 used for cutting to form the inclined surface 230 to the area of ​​the end surface 210 of the protruding portion 200 is 1:100-1:20. It can be understood that if the area of ​​the formed inclined surface 230 is too large, when the cover plate is applied to the display module, it will cause the visual effect of the user to deteriorate.

[0045] Specifically, due to different cutting angles, the angle between the inclined surface 230 and the direction perpendicular to the cover body 100 will also be different, and the size of the angle between the inclined surface 230 and the direction perpendicular to the cover body 100 will affect the appearance of the prepared display device. For example, when the cover is used in an electronic watch, it will affect the appearance of the prepared electronic watch. In order not to affect the appearance of the prepared display device, the angle between the inclined surface 230 and the direction perpendicular to the cover body 100 is in the range of 30°-60°. Preferably, the angle between the inclined surface 230 and the direction perpendicular to the cover body 100 is 45°.

[0046] Further, in some embodiments, the thickness of the cover body 100 is 1 / 4-1 / 3 of the thickness of the protrusion 200 .

[0047] It is understandable that when the cover is applied to a display device, for example, when the cover is applied to an electronic watch, a face frame is also provided on the light-emitting side of the cover. If the thickness of the cover body 100 is too thin, when the edge area of ​​the cover body 100 contacts the face frame, the edge area of ​​the cover body 100 is easily damaged, resulting in poor quality of the prepared electronic watch. If the thickness of the cover body 100 is too thick, it will affect the installation of the face frame on the cover. At the same time, the thickness of the cover is the thickness of the cover body 100 plus the thickness of the protrusion 200. Since the thickness of the cover body 100 is thick, the thickness of the cover is also significantly increased. Therefore, when the cover is applied to an electronic watch, the thickness of the prepared electronic watch is also significantly increased, that is, it will affect the appearance of the prepared electronic watch. Therefore, in this embodiment, the thickness of the cover body 100 is set to 1 / 4-1 / 3 of the thickness of the protrusion 200 to avoid the aforementioned problem of poor quality or poor appearance of the display device when applied to the display device.

[0048] In addition, considering that during the process of assembling the cover plate with the face frame added on the light-emitting side of the cover plate, the overlapping area between the cover plate body 100 and the protruding portion 200 is also easily damaged by the gravity of the face frame, and in order to reduce the impact of the face frame and the cover plate on the overlapping area during the assembly process, as Figure 5 As shown, the surface 110 of the cover body 100 close to the protrusion 200 is connected to the side wall 220 of the protrusion 200 by an arc surface 300 to avoid the overlap area between the surface 110 of the cover body 100 and the side wall 230 of the protrusion 200 being broken due to gravity when the side wall 230 of the protrusion 200 is directly set at an angle to the surface 110 of the cover body 100, thereby effectively improving the service life of the cover.

[0049] It should be noted that, since the arc surface 300 is directly connected to the side wall 220 of the protruding portion 200, the setting of the arc surface 300 will affect the setting range of the angle θ between the side wall 220 of the protruding portion 200 and the direction perpendicular to the cover plate body 100. At the same time, the setting of the arc surface 300 will also affect the structure of the face frame matched with the cover plate, that is, the structure of the face frame needs to be adjusted to adapt to the arc surface 300. In this embodiment, in order to reduce the influence of the setting of the arc surface 300 on the setting range of the angle θ, and reduce the influence of the setting of the arc surface 300 on the structure of the face frame matched with the cover plate, the ratio of the radius of the arc surface 300 to the thickness of the cover plate body 100 is 2:1-1:1, and preferably, the ratio of the radius of the arc surface 300 to the thickness of the cover plate body 100 is 3:2.

[0050] In some embodiments, the inclined surface 230 is a curved surface.

[0051] Theoretically, since the inclined surface 230 is a cut surface formed by cutting the edge area of ​​the end surface 210 of the protrusion 200, the inclined surface 230 should be a plane obtained by cutting. However, in the actual processing process, after the corresponding ground grinding and polishing steps, the sharp corners of the intersection of the inclined surface 230 and the end surface 210 and the sharp corners of the intersection of the inclined surface 230 and the side wall 220 are all ground flat, thereby presenting an arc shape, that is, the inclined surface 230 is a curved surface.

[0052] In the second aspect of the embodiment of the present application, Figure 6 As shown, a display module is provided, comprising: a display panel 20 and a cover plate 10, wherein the display panel 20 comprises a display area 21 and a non-display area 22, the cover plate 10 is arranged on the light-emitting side of the display panel 20, the cover plate 10 comprises a cover plate body 100 and a protrusion 200 connected to the cover plate body 100, the protrusion 200 comprises an end face 210 away from a side of the cover plate body 100 and a side wall 220 surrounding the end face 210, and an inclined surface 230 connecting the end face 210 and the side wall 220, and the angle between the side wall 220 of the protrusion 200 and the direction perpendicular to the cover plate body 100 is an acute angle; wherein the orthographic projection of the end face 210 of the protrusion 200 on the display panel 20 at least covers the display area 21 of the display panel 20.

[0053] In this embodiment, since the side wall 220 of the protruding portion 200 of the cover plate 10 is arranged at an acute angle to the direction perpendicular to the cover plate body 100, when the cover plate 10 is applied to a display module and arranged on the light emitting surface side of the display panel 20, as shown in FIG. Figure 7 As shown, the light originally reflected by the side wall 220 and then refracted through the inclined surface 230 is twisted in its optical path after being reflected by the side wall 220 because the side wall 220 is set at an angle to the direction perpendicular to the cover body 100. Most of the light is no longer refracted through the inclined surface 230, but is mainly emitted through the end surface 210 of the protrusion 200, resulting in a reduction in the amount of light reflected by the side wall 220 and then refracted from the inclined surface 230, thereby effectively reducing the probability of moiré patterns appearing on the inclined surface 230, thereby improving display problems that occur when the cover 10 is used in a display module.

[0054] Further, in this embodiment, the orthographic projection of the end surface 210 of the protrusion 200 on the display panel 20 at least covers the display area 21 of the display panel 20, that is, the orthographic projection of the inclined surface 230 connecting the end surface 210 and the side wall 220 on the display panel 20 is located in the non-display area 22 of the display panel 20. It should be noted that Figure 6AA shown in is used to represent the display area 21 described in this embodiment. It can be understood that since the positive projection of the inclined surface 230 on the display panel 20 is located in the non-display area 22 of the display panel 20, that is, there is no light emitting point directly facing the inclined surface 230, in this embodiment, by reducing the amount of light passing through the inclined surface 230, the amount of light reflected by the side wall 220 and then refracted from the inclined surface 230 can also be effectively weakened, thereby effectively improving the display problem of moiré patterns on the inclined surface 230 when the cover plate is applied to the display module.

[0055] In some embodiments, the angle between the side wall 220 of the protrusion 200 and the direction perpendicular to the cover body 100 is in the range of 3°-10°.

[0056] In the present embodiment, the angle θ between the side wall 220 of the protrusion 200 and the direction perpendicular to the cover body 100 is in the range of 3°-10°. For example, the angle θ may be 4°, 5°, 6°, 7°, 8° or 9°, etc. It is understandable that if the angle θ between the side wall 220 of the protrusion 200 and the direction perpendicular to the cover body is too small, then when the cover is applied to the display module, part of the light will still be reflected by the side wall 220 and then emitted from the inclined surface 230, resulting in a high probability of moiré patterns appearing on the inclined surface of the cover. If the angle between the side wall 220 of the protrusion 200 and the direction perpendicular to the cover body 100 is too large, the structure of the face frame above the cover needs to be adjusted to adapt to the structural changes of the protrusion 200, which introduces new technical problems.

[0057] In this embodiment, by setting the angle θ between the side wall 220 of the protruding portion 200 and the direction perpendicular to the cover plate body 100 to be in the range of 3°-10°, the display problem of moiré that occurs when the cover plate is applied to the display module can be improved. At the same time, since the structural adjustment range of the side wall 220 of the protruding portion 200 of the cover plate is small, there is no need to additionally adjust the structure of the face frame arranged above the cover plate. Preferably, the angle θ between the side wall 220 of the protruding portion 200 and the direction perpendicular to the cover plate body 100 is set to be in the range of 5°-7°.

[0058] Furthermore, in a direction extending from the central area of ​​the cover plate to the edge area of ​​the cover plate, the distance between the inclined surface 230 and the cover plate body 100 decreases sequentially.

[0059] In this embodiment, the inclined surface 230 is a cutting surface formed by cutting the edge of the end surface 210 of the protruding portion 200, so the distance between the inclined surface 230 and the cover plate body 100 decreases in sequence in the direction extending from the central area of ​​the cover plate to the edge area of ​​the cover plate. Among them, the ratio of the area occupied by the edge of the end surface 210 of the protruding portion 200 used for cutting to form the inclined surface 230 to the area of ​​the end surface 210 of the protruding portion 200 is 1:100-1:20. It can be understood that if the area of ​​the formed inclined surface 230 is too large, when the cover plate is applied to the display module, it will cause the visual effect of the user to deteriorate.

[0060] Understandably, due to different cutting angles, the angle between the inclined surface 230 and the direction perpendicular to the cover body 100 will also be different, and the size of the angle between the inclined surface 230 and the direction perpendicular to the cover body 100 will affect the appearance of the prepared display device. For example, when the cover is used in an electronic watch, it will affect the appearance of the prepared electronic watch. In order not to affect the appearance of the prepared display device, the angle between the inclined surface 230 and the direction perpendicular to the cover body 100 is in the range of 30-60°. Preferably, the angle between the inclined surface 230 and the direction perpendicular to the cover body 100 is 45°.

[0061] In some embodiments, the thickness of the cover plate body 100 is 1 / 4-1 / 3 of the thickness of the protrusion 200 .

[0062] Understandably, in the present embodiment, when the cover is applied to a display device, for example, when the cover is applied to an electronic watch, a face frame is further provided on the light-emitting side of the cover. If the thickness of the cover body 100 is too thin, the edge area of ​​the cover body 100 is easily damaged when it contacts the face frame, resulting in poor quality of the prepared electronic watch. If the thickness of the cover body 100 is too thick, the installation of the face frame on the cover will be affected. At the same time, the thickness of the cover is the thickness of the cover body 100 plus the thickness of the protrusion 200. Since the thickness of the cover body 100 is thicker, the thickness of the cover is also significantly increased. Therefore, when the cover is applied to an electronic watch, the thickness of the prepared electronic watch is also significantly increased, which will affect the appearance of the prepared electronic watch. Therefore, in this embodiment, the thickness of the cover plate body 100 is set to 1 / 4-1 / 3 of the thickness of the protrusion 200 to avoid the aforementioned problems of poor quality or poor appearance of the display device when applied to the display device.

[0063] In addition, during the process of assembling the cover plate with the face frame on the light-emitting side of the cover plate, the overlapping area between the cover plate body 100 and the protruding portion 200 is also easily damaged by the gravity of the face frame. In order to reduce the impact of the face frame and the cover plate on the overlapping area during the assembly process, Figure 5As shown, the surface 110 of the cover body 100 close to the protrusion 200 is connected to the side wall 220 of the protrusion 200 by an arc surface 300 to avoid the overlap area between the surface 110 of the cover body 100 and the side wall 230 of the protrusion 200 being broken due to gravity when the side wall 230 of the protrusion 200 is directly set at an angle to the surface 110 of the cover body 100, thereby effectively improving the service life of the cover.

[0064] It should be noted that, since the arc surface 300 is directly connected to the side wall 220 of the protruding portion 200, the setting of the arc surface 300 will affect the setting range of the angle θ between the side wall 220 of the protruding portion 200 and the direction perpendicular to the cover plate body 100. At the same time, the setting of the arc surface 300 will also affect the structure of the face frame matched with the cover plate, that is, the structure of the face frame needs to be adjusted to adapt to the arc surface 300. In this embodiment, in order to reduce the influence of the setting of the arc surface 300 on the setting range of the angle θ, and reduce the influence of the setting of the arc surface 300 on the structure of the face frame matched with the cover plate, the ratio of the radius of the arc surface 300 to the thickness of the cover plate body 100 is 2:1-1:1, and preferably, the ratio of the radius of the arc surface 300 to the thickness of the cover plate body 100 is 3:2.

[0065] Furthermore, the inclined surface 230 is a curved surface.

[0066] Theoretically, since the inclined surface 230 is the cut surface formed by cutting the edge area of ​​the end surface 210 of the protrusion 200, the inclined surface 230 should be a plane formed by cutting. However, in the actual processing process, after the corresponding ground grinding and polishing steps, the sharp corners of the intersection of the inclined surface 230 and the end surface 210 and the sharp corners of the intersection of the inclined surface 230 and the side wall 220 are all ground flat, thereby presenting an arc shape, that is, the inclined surface 230 is a curved surface.

[0067] In some embodiments, Figure 6 As shown, the display module includes a light shielding layer 30 , wherein the light shielding layer 30 is disposed on a side of the cover plate 10 close to the display panel 20 and opposite to the non-display area 22 of the display panel 20 .

[0068] In this embodiment, the light shielding layer 30 disposed on the side of the cover plate 10 close to the display panel 20 is used to reduce the amount of light emitted from the display area 21 of the display panel 20 through the inclined surface 230 .

[0069] Furthermore, if Figure 6 As shown, the orthographic projection of the end surface 210 of the protrusion 200 on the display panel 20 covers the display area 22 of the display panel 20 , and the orthographic projection of the light shielding layer 30 on the display panel 20 covers the non-display area 22 of the display panel 20 .

[0070] In the present embodiment, the orthographic projection of the end face 210 of the protrusion 200 on the display panel 20 covers the display area 21 of the display panel 20, and the orthographic projection of the inclined surface 230 connecting the end face 210 and the side wall 220 on the display panel 20 is located in the non-display area 22 of the display panel 20. Since the orthographic projection of the inclined surface 230 on the display panel 20 is located in the non-display area 22 of the display panel 20, that is, there is no light emitting point directly facing the inclined surface 230, in the present embodiment, by reducing the amount of light passing through the inclined surface 230, the amount of light reflected by the side wall 220 and then refracted from the inclined surface 230 can be effectively weakened; at the same time, the shading layer 30 arranged on the side of the cover plate 10 close to the display panel 20 can also effectively reduce the amount of light emitted through the inclined surface 230, thereby improving the display problem of moiré on the inclined surface 230 when the cover plate is applied to the display module.

[0071] Furthermore, if Figure 8 or Fig. 9 As shown, the orthographic projection of the end surface 210 of the protrusion 200 on the display panel 20 covers the display area 21 of the display panel 20 and a portion of the non-display area 22 close to the display area 21 .

[0072] It should be noted that in Figure 8 and Fig. 9 AA is the abbreviation of Active Area, which means the display area 21 described in this embodiment, and VA is the abbreviation of View Area, which means the area not covered by the light shielding layer 30 in this embodiment, that is, the area through which light passes.

[0073] It can be understood that in the present embodiment, since the orthographic projection of the end surface 210 of the protrusion 200 on the display panel 20 covers the display area 21 of the display panel 20 and a portion of the non-display area 22 close to the display area 21, that is, in the horizontal direction, the distance between the orthographic projection of the inclined surface 230 connecting the end surface 210 and the side wall 220 on the display panel 20 and the display area 21 of the display panel 20 is greater than 0, therefore, the light emitted from the display area 21 of the display panel 20 is difficult to be refracted and emitted through the inclined surface 230, and most of the light in the display area 21 of the display panel 20 is emitted through the end surface 210 of the protrusion 200, thereby effectively improving the display problem of moiré patterns on the inclined surface 230 when the cover plate 10 is applied to the display module.

[0074] It should be noted that the distance between the orthographic projection of the inclined surface 230 on the display panel 20 and the display area 21 of the display panel 20 is usually 1-2 mm. If the distance between the orthographic projection of the inclined surface 230 on the display panel 20 and the display area 21 of the display panel 20 is too large, it indicates that the display area 21 of the display panel 20 is too small, which will lead to a decrease in the user experience of the prepared display device. For example, if the display area of ​​an electronic watch is too small, the user experience will be poor.

[0075] Furthermore, the orthographic projection of the shading layer 30 on the display panel 20 covers the non-display area 22 of the display panel 20, or the orthographic projection of the shading layer 30 on the display panel 20 covers part of the non-display area 22 of the display panel 20, and the orthographic projection of the shading layer 30 on the cover plate covers the inclined surface 230.

[0076] Among them, Figure 8 As shown, in the present embodiment, when the orthographic projection of the end surface 210 of the protrusion 200 of the cover plate 10 on the display panel 20 covers the display area 21 of the display panel 20 and a part of the non-display area 22 close to the display area 21, the orthographic projection of the light-shielding layer 30 on the display panel 20 covers the non-display area 22 of the display panel 20, that is, the display area 21 (AA area) of the display panel 20 coincides with the area (VA area) on the display panel 20 that is not covered by the light-shielding layer 30.

[0077] Accordingly, the optical path of the light emitted from the display area 21 of the display panel 20 through the cover plate 10 can be referred to Fig.10 As shown in the figure, on the one hand, because the side wall 220 of the protruding portion 200 of the cover plate 10 is arranged at an acute angle with the direction perpendicular to the cover plate body 100, the optical path of the light originally reflected by the side wall 220 and then refracted and emitted through the inclined surface 230 is twisted, and most of the light is no longer refracted through the inclined surface 230, but is mainly emitted through the end surface 210 of the protruding portion 200. On the other hand, because the orthographic projection of the inclined surface 230 on the display panel 20 is located in the non-display area 22 of the display panel 20, and a light shielding layer 30 is arranged at a relative position of the non-display area 22, that is, there is no light-emitting point facing the inclined surface 230, thereby effectively improving the display problem of moiré on the inclined surface 230 when the cover plate is applied to the display module.

[0078] Furthermore, if Fig. 9 As shown, the orthographic projection of the shading layer 30 on the display panel 20 covers a portion of the non-display area 22 of the display panel 20, and the orthographic projection of the shading layer 30 on the cover plate covers the inclined surface 230, that is, the display area 21 (AA area) of the display panel 20 does not overlap with the area (VA area) on the display panel 20 that is not covered by the shading layer 30.

[0079] Accordingly, the optical path of the light emitted from the display area 21 of the display panel 20 through the cover plate 10 can be referred to Fig.11 As shown in the figure, on the one hand, because the side wall 220 of the protruding portion 200 of the cover plate 10 is arranged at an acute angle with the direction perpendicular to the cover plate body 100, the optical path of the light originally reflected by the side wall 220 and then refracted and emitted through the inclined surface 230 is twisted, and most of the light is no longer refracted through the inclined surface 230, but is mainly emitted through the end surface 210 of the protruding portion 200. On the other hand, because the orthographic projection of the inclined surface 230 on the display panel 20 is located in the non-display area 22 of the display panel 20, and a light shielding layer 30 is arranged at a relative position of the non-display area 22, that is, there is no light-emitting point facing the inclined surface 230, thereby effectively improving the display problem of moiré on the inclined surface 230 when the cover plate is applied to the display module.

[0080] It should be noted that the distance between the edge of the VA area and the edge of the AA area is 0-1 mm. If the distance between the edge of the VA area and the edge of the AA area is too large, it will affect the display effect of the display device, that is, the non-display area set outside the effective display area is too large, which will affect the appearance of the product and the user experience.

[0081] In some embodiments, Figure 6 As shown, the display module further includes a polarizing plate 40 and an optical adhesive layer 50 , wherein the polarizing plate 40 is disposed on a side close to the display panel 20 , and the optical adhesive layer 50 is disposed on a side close to the cover plate 10 .

[0082] In this embodiment, the polarizing plate 40 can be used to adjust the light emitted by the display panel 20, and the optical adhesive layer 50 can be used to stably fix the cover plate 10 to one side of the polarizing plate 40. Preferably, the optical adhesive layer 50 is a heat-curing optically transparent hot-melt adhesive film layer.

[0083] According to a third aspect of the embodiments of the present application, a display device is provided, comprising: a display module as described in the second aspect.

[0084] It should be noted that the display device provided in the embodiments of the present application may be: electronic paper, electronic watches, mobile phones, tablet computers, televisions, monitors, laptop computers, wearable electronic devices, digital photo frames, navigators, and any other products or components with display functions, and the embodiments of the present application do not make specific limitations.

[0085] The cover plate provided in the embodiment of the present application adjusts the side wall of the boss of the cover plate from the existing vertical setting to a setting at an acute angle to the vertical direction, resulting in a reduction in the amount of light originally reflected by the side wall and then refracted from the inclined surface when the cover plate is applied to the light-emitting surface side of the display panel of the display module, thereby effectively reducing the probability of moiré patterns appearing on the inclined surface, thereby improving the display problem of moiré patterns that appear when the cover plate is applied to the display module.

[0086] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

[0087] Although the preferred embodiments of this specification have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of this specification.

[0088] Obviously, those skilled in the art can make various changes and modifications to this specification without departing from the spirit and scope of this specification. Thus, if these modifications and variations of this specification fall within the scope of the claims of this specification and their equivalents, this specification is also intended to include these modifications and variations.

Claims

1. A cover plate, characterized in that: The cover plate includes: a cover plate main body and a protruding portion connected to the cover plate main body, the protruding portion includes an end face away from one side of the cover plate main body and a side wall surrounding the end face, and an inclined surface connecting the end face and the side wall, wherein the angle between the side wall of the protruding portion and the direction perpendicular to the cover plate main body is an acute angle.

2. The cover plate according to claim 1, characterized in that: The angle between the side wall of the protrusion and the direction perpendicular to the cover plate body is in the range of 3°-10°.

3. The cover plate according to claim 1, characterized in that: In a direction extending from the central area of ​​the cover plate to the edge area of ​​the cover plate, the distance between the inclined surface and the cover plate body decreases successively.

4. The cover plate according to claim 3, characterized in that: The inclined surface is a curved surface.

5. The cover plate according to claim 1, characterized in that: The thickness of the cover plate body is 1 / 4-1 / 3 of the thickness of the protruding portion.

6. A display module, characterized in that: include: A display panel, including a display area and a non-display area; A cover plate, arranged on the light-emitting side of the display panel, the cover plate comprising a cover plate body and a protrusion connected to the cover plate body, the protrusion comprising an end face away from one side of the cover plate body and a side wall surrounding the end face, and an inclined face connecting the end face and the side wall, and the angle between the side wall of the protrusion and the direction perpendicular to the cover plate body is an acute angle; Wherein, the orthographic projection of the end surface of the protruding portion on the display panel at least covers the display area of ​​the display panel.

7. The display module according to claim 6, characterized in that: The display module includes a light shielding layer, wherein the light shielding layer is arranged on a side of the cover plate close to the display panel and is arranged opposite to a non-display area of ​​the display panel.

8. The display module according to claim 7, characterized in that: The orthographic projection of the end surface of the protrusion on the display panel covers the display area of ​​the display panel, and the orthographic projection of the light shielding layer on the display panel covers the non-display area of ​​the display panel.

9. The display module according to claim 7, characterized in that: The orthographic projection of the end surface of the protrusion on the display panel covers the display area of ​​the display panel and a portion of the non-display area close to the display area.

10. The display module according to claim 9, characterized in that: The orthographic projection of the light shielding layer on the display panel covers the non-display area of ​​the display panel; or The orthographic projection of the light shielding layer on the display panel covers a portion of the non-display area of ​​the display panel, and the orthographic projection of the light shielding layer on the cover plate covers the inclined surface.

11. The display module according to claim 10, characterized in that: The display module further includes a polarizing plate and an optical adhesive layer, wherein the polarizing plate is arranged on a side close to the display panel, and the optical adhesive layer is arranged on a side close to the cover plate.

12. A display device, characterized in that: Comprising the display module as described in claims 6-11.

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