Cover plate, display module and manufacturing method therefor, and display apparatus

Abstract

A cover plate (100), a display module and a manufacturing method therefor, and a display apparatus. The cover plate (100) comprises ultra-thin glass (101), a transparent optical adhesive layer (102) located on one side of the ultra-thin glass (101), and a flexible film layer (103) located on the side of the transparent optical adhesive layer (102) away from the ultra-thin glass (101). A side surface of the flexible film layer (103) is flush with a side surface of the transparent optical adhesive layer (102); a side surface of the ultra-thin glass (101) retracts inwards with respect to the side surface of the transparent optical adhesive layer (102), and a fault space (K) is formed between the side surface of the ultra-thin glass (101) and the surface of the transparent optical adhesive layer (102) close to the ultra-thin glass (101); the part of at least one surface of the ultra-thin glass (101) at least close to the fault space (K) is provided with a protection structure (104). The present application can reduce the probability of breakage of the ultra-thin glass (101).

Description

Cover plate, display module and manufacturing method thereof, and display device

[0001] This application claims priority to Chinese patent application number 202311801499.1, filed on December 25, 2023, and entitled “Cover and Display Device,” the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present application relates to a cover plate, a display module, a manufacturing method thereof, and a display device. Background Art

[0003] Flexible display devices, which can be folded, rolled, or bent, have attracted attention for their portability and convenience. These devices consist of a flexible display panel and a cover plate attached to the light-emitting surface of the flexible display panel. The cover plate, typically made of ultra-thin glass, enhances the panel's strength. Summary of the Invention

[0004] The present application provides a cover plate, a display module, a manufacturing method thereof, and a display device. The technical solution of the present application is as follows.

[0005] In a first aspect, a cover plate is provided, comprising: an ultra-thin glass, a transparent optical adhesive layer located on one side of the ultra-thin glass, and a flexible film layer located on a side of the transparent optical adhesive layer away from the ultra-thin glass;

[0006] The side surface of the flexible film layer is flush with the side surface of the transparent optical adhesive layer, and the side surface of the ultra-thin glass is retracted relative to the side surface of the transparent optical adhesive layer to form a fault space between the side surface of the ultra-thin glass and the surface of the transparent optical adhesive layer close to the ultra-thin glass. At least a portion of at least one surface of the ultra-thin glass close to the fault space has a protective structure.

[0007] Optionally, the flexible membrane layer includes a central area and a peripheral area surrounding the central area, and the cover plate further includes a light-shielding layer located in the peripheral area; the width of the fault space is smaller than the width of the light-shielding layer.

[0008] Optionally, the ultra-thin glass includes a first surface close to the transparent optical adhesive layer and a second surface away from the transparent optical adhesive layer; and the protective structure satisfies one or more of the following conditions:

[0009] The protective structure includes a first portion covering an area of ​​the first surface adjacent to the fault space;

[0010] The protective structure includes a second portion covering an area of ​​the second surface adjacent to the fault space;

[0011] The protective structure includes a third portion located in the fault space.

[0012] Optionally, the third portion wraps the side surface of the ultra-thin glass.

[0013] Optionally, the protective structure satisfies one or more of the following requirements:

[0014] The width of the first portion is no greater than the width of the light shielding layer;

[0015] The thickness of the first portion is smaller than the thickness of the transparent optical adhesive layer;

[0016] The width of the second portion is no greater than the width of the light shielding layer;

[0017] The thickness of the second portion is smaller than the thickness of the transparent optical adhesive layer;

[0018] The width of the third portion is no greater than the width of the fault space;

[0019] The thickness of the third portion is equal to the thickness of the ultra-thin glass.

[0020] Optionally, the protective structure satisfies one or more of the following requirements:

[0021] The width of the first portion is no greater than 500 μm (micrometers);

[0022] The thickness of the first portion is not greater than 5 μm;

[0023] The width of the second portion is no greater than 500 μm;

[0024] The thickness of the second portion is not greater than 5 μm;

[0025] The width of the third portion is no greater than 50 μm.

[0026] Optionally, the protective structure fills the fault space and covers the surface of the ultra-thin glass away from the transparent optical adhesive layer.

[0027] Optionally, the thickness of the protective structure is greater than the thickness of the ultra-thin glass.

[0028] Optionally, the material of the protective structure is the same as that of the transparent optical adhesive layer, and the protective structure and the transparent optical adhesive layer are an integrated structure.

[0029] Optionally, the material of the protection structure includes any one of the following: thermal conductive glue, polymer or optical clear resin (OCR) glue.

[0030] Optionally, the thermally conductive adhesive includes resin and filler, and the filler is a thermally conductive and insulating material.

[0031] Optionally, the filler includes one or more of the following combinations: aluminum nitride (AlN), boron nitride (BN), silicon nitride (Si3N4), aluminum oxide (Al2O3), magnesium oxide (MgO) or zinc oxide (ZnO).

[0032] Optionally, the polymer includes one or more of the following combinations: polyimide (PI), polyethylene terephthalate (PET), thermoplastic polyurethanes (TPU), polymethyl methacrylate (PMMA) or polyurethane (PU).

[0033] Optionally, the material of the transparent optical adhesive layer includes optically clear adhesive (OCA) or OCR adhesive.

[0034] Optionally, the thickness of the flexible film layer ranges from 20 μm to 200 μm;

[0035] The thickness of the transparent optical adhesive layer is in the range of 10 μm to 100 μm;

[0036] The thickness of the ultra-thin glass ranges from 10 μm to 100 μm.

[0037] Optionally, the cutting surface of the cover plate is located between the side surface of the ultra-thin glass and the side surface of the transparent optical adhesive layer.

[0038] In a second aspect, a method for manufacturing a display module is provided, the method comprising:

[0039] A display panel and a cover plate are provided. The cover plate includes ultrathin glass, a transparent optical adhesive layer located on one side of the ultrathin glass, and a flexible film layer located on a side of the transparent optical adhesive layer away from the ultrathin glass. The side surface of the flexible film layer is flush with the side surface of the transparent optical adhesive layer. The side surface of the ultrathin glass is retracted relative to the side surface of the transparent optical adhesive layer to form a fault space between the side surface of the ultrathin glass and a surface of the transparent optical adhesive layer proximal to the ultrathin glass. A protective structure is provided on at least one surface of the ultrathin glass, at least in a portion proximal to the fault space.

[0040] Adhere the cover plate to the light-emitting surface of the display panel so that the orthographic projection of the cutting line of the cover plate on the light-emitting surface coincides with the orthographic projection of the cutting line of the display panel on the light-emitting surface;

[0041] The cover plate and the display panel are cut along a cutting line of the cover plate.

[0042] Optionally, after cutting the cover plate and the display panel along the cutting line of the cover plate, the method further comprises: pasting a support structure on a surface opposite to the light emitting surface of the display panel.

[0043] For other features of the cover plate, please refer to the optional implementation of the first aspect, which will not be described in detail here.

[0044] In a third aspect, a display module is provided, comprising a display panel and a cover plate, wherein the cover plate is located on the light-emitting surface of the display panel, the cover plate comprising ultra-thin glass, a transparent optical adhesive layer located on one side of the ultra-thin glass, and a flexible film layer located on a side of the transparent optical adhesive layer away from the ultra-thin glass, the side surface of the flexible film layer is flush with the side surface of the transparent optical adhesive layer, the side surface of the ultra-thin glass is retracted relative to the side surface of the transparent optical adhesive layer to form a fault space between the side surface of the ultra-thin glass and the surface of the transparent optical adhesive layer close to the ultra-thin glass, and at least a portion of at least one surface of the ultra-thin glass close to the fault space has a protective structure.

[0045] For other features of the cover plate, please refer to the optional implementation of the first aspect, which will not be described in detail here.

[0046] In a fourth aspect, a display device is provided, comprising the display module provided in the third aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other embodiments can also be obtained based on these drawings.

[0048] FIG1 is a front view of a cover plate provided in an embodiment of the present application;

[0049] FIG2 is a cross-sectional view of a cover plate provided in an embodiment of the present application;

[0050] FIG3 is a cross-sectional view of another cover plate provided in an embodiment of the present application;

[0051] FIG4 is a cross-sectional view of another cover plate provided in an embodiment of the present application;

[0052] FIG5 is a cross-sectional view of another cover plate provided in an embodiment of the present application;

[0053] FIG6 is a cross-sectional view of another cover plate provided in an embodiment of the present application;

[0054] FIG7 is a cross-sectional view of another cover plate provided in an embodiment of the present application;

[0055] FIG8 is a cross-sectional view of another cover plate provided in an embodiment of the present application;

[0056] FIG9 is a cross-sectional view of another cover plate provided in an embodiment of the present application;

[0057] FIG10 is a cross-sectional view of another cover plate provided in an embodiment of the present application;

[0058] FIG11 is a cross-sectional view of another cover plate provided in an embodiment of the present application;

[0059] FIG12 is a cross-sectional view of another cover plate provided in an embodiment of the present application;

[0060] FIG13 is a flow chart of a method for manufacturing a display module according to an embodiment of the present application;

[0061] FIG14 is a schematic diagram of the cover plate shown in FIG2 after being attached to the light emitting surface of the display panel;

[0062] FIG15 is a schematic diagram of the cover plate shown in FIG3 after being attached to the light emitting surface of the display panel;

[0063] FIG16 is a schematic diagram showing the cover plate shown in FIG4 being attached to the light emitting surface of the display panel;

[0064] FIG17 is a schematic diagram of the cover plate shown in FIG5 after being attached to the light emitting surface of the display panel;

[0065] FIG18 is a schematic diagram of the cover plate shown in FIG6 after being attached to the light emitting surface of the display panel;

[0066] FIG19 is a schematic diagram of the cover plate shown in FIG7 after being attached to the light emitting surface of the display panel;

[0067] FIG20 is a schematic diagram of the cover plate shown in FIG8 after being attached to the light emitting surface of the display panel;

[0068] FIG21 is a schematic diagram of the cover plate shown in FIG9 after being attached to the light emitting surface of the display panel;

[0069] FIG22 is a schematic diagram of the cover plate shown in FIG10 after being attached to the light emitting surface of the display panel;

[0070] FIG23 is a schematic diagram of the cover plate shown in FIG11 after being attached to the light emitting surface of the display panel;

[0071] FIG24 is a schematic diagram of the cover plate shown in FIG12 after being attached to the light emitting surface of the display panel;

[0072] FIG25 is a schematic diagram of a display module provided in an embodiment of the present application;

[0073] FIG26 is a schematic diagram of another display module provided in an embodiment of the present application;

[0074] FIG27 is a schematic diagram of another display module provided in an embodiment of the present application;

[0075] FIG28 is a schematic diagram of another display module provided in an embodiment of the present application;

[0076] FIG29 is a schematic diagram of another display module provided in an embodiment of the present application;

[0077] FIG30 is a schematic diagram of another display module provided in an embodiment of the present application;

[0078] FIG31 is a schematic diagram of another display module provided in an embodiment of the present application;

[0079] FIG32 is a schematic diagram of another display module provided in an embodiment of the present application;

[0080] FIG33 is a schematic diagram of another display module provided in an embodiment of the present application;

[0081] FIG34 is a schematic diagram of another display module provided in an embodiment of the present application;

[0082] FIG35 is a schematic diagram of another display module provided in an embodiment of the present application. DETAILED DESCRIPTION

[0083] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field based on this application are within the scope of protection of this application.

[0084] The flexible display device includes a flexible display panel and a cover plate adhered to the light emitting surface of the flexible display panel. The cover plate is used to improve the strength of the flexible display panel and usually includes ultra-thin glass.

[0085] In order to meet the narrow frame requirement of the flexible display device, after the cover plate is affixed to the light-emitting surface of the flexible display panel, it is necessary to perform an integrated cutting of the peripheral area of ​​the flexible display panel and the peripheral area of ​​the cover plate (that is, the peripheral area of ​​the flexible display panel and the peripheral area of ​​the cover plate are cut at the same time). In order to avoid cutting the ultra-thin glass during the integrated cutting process and causing the ultra-thin glass to break, it is necessary to make the side surface of the ultra-thin glass retract a certain distance relative to the side surface of the flexible display panel during the process of affixing the cover plate to the light-emitting surface of the flexible display panel. However, in this way, the gap caused by the retraction of the side surface of the ultra-thin glass can easily lead to a fault space between the side surface of the ultra-thin glass and the surface of the flexible display panel close to the ultra-thin glass, and this fault space can easily cause the ultra-thin glass to break during the integrated cutting process.

[0086] Please refer to Figures 1 to 12. Figure 1 is a front view of a cover plate 100 provided in an embodiment of the present application, and any of Figures 2 to 12 is a cross-sectional view of the cover plate 100 shown in Figure 1 taken along section EE. As shown in Figures 1 to 12, the cover plate 100 includes an ultra-thin glass 101, a transparent optical adhesive layer 102 located on one side of the ultra-thin glass 101, and a flexible film layer 103 located on a side of the transparent optical adhesive layer 102 facing away from the ultra-thin glass 101. The side surface of the flexible film layer 103 is flush with the side surface of the transparent optical adhesive layer 102. The side surface of the ultra-thin glass 101 is indented relative to the side surface of the transparent optical adhesive layer 102, forming a fault space K between the side surface of the ultra-thin glass 101 and the surface of the transparent optical adhesive layer 102 proximal to the ultra-thin glass 101 (the fault space K is not shown in Figures 8 to 12; the fault space K in Figures 8 to 12 can be referred to in Figures 2 to 7). A protective structure 104 is provided on at least one surface of the ultra-thin glass 101, at least in a portion proximal to the fault space K. The protective structure 104 is used to protect the ultra-thin glass 101 and prevent it from breaking during the cutting process. For example, the protective structure 104 prevents the ultra-thin glass 101 from breaking during the cutting process of the cover plate 100 using a laser cutting process.

[0087] As shown in Figures 2 to 12, the cutting surface G1 of the cover plate 100 is located between the side surface of the ultra-thin glass 101 and the side surface of the transparent optical adhesive layer 102. The distance a between the side surface of the ultra-thin glass 101 and the side surface of the transparent optical adhesive layer 102 is greater than the distance c between the cutting surface G1 of the cover plate 100 and the side surface of the transparent optical adhesive layer 102. The distance a between the side surface of the ultra-thin glass 101 and the side surface of the transparent optical adhesive layer 102 is also referred to as the indentation of the side surface of the ultra-thin glass 101 or the width of the fault space K. The cutting surface G1 of the cover plate 100 is formed by cutting the cover plate 100 along the cutting line G in the thickness direction y of the cover plate 100. Because the cutting surface G1 of the cover plate 100 is located between the side surface of the ultra-thin glass 101 and the side surface of the transparent optical adhesive layer 102, the ultra-thin glass 101 will not be cut during the cutting process of the cover plate 100, thereby preventing the ultra-thin glass 101 from breaking during the cutting process. Since the cut surface G1 of the cover plate 100 is formed by cutting the cover plate 100 in the thickness direction of the cover plate 100, the flatness of the cut surface G1 is relatively good. It should be noted that the cover plate 100 shown in Figures 1 to 12 is the cover plate before cutting, and the cover plate 100 does not include the cut surface G1. For the convenience of description, the present embodiment introduces the concept of the cut surface G1.

[0088] In an optional embodiment, as shown in Figures 2 to 12, the flexible film layer 103 includes a central region 1031 and a peripheral region 1032 surrounding the central region 1031. The cover plate 100 also includes a light-shielding layer 105 located in the peripheral region 1032 of the flexible film layer 103. The width a of the fault space K is smaller than the width b of the light-shielding layer 105. The orthographic projection of the light-shielding layer 105 on the first surface of the ultra-thin glass 101 covers the orthographic projection of the fault space K on the first surface of the ultra-thin glass 101, and the orthographic projection of the light-shielding layer 105 on the first surface of the ultra-thin glass 101 covers the peripheral region of the ultra-thin glass 101. The first surface of the ultra-thin glass 101 is the surface of the ultra-thin glass 101 adjacent to the transparent optical adhesive layer 102. The central region 1031 of the flexible film layer 103 is a light-transmitting region, thus allowing light to pass through. The peripheral region 1032 of the flexible film layer 103 is provided with a light-shielding layer 105, thus preventing light from passing through the peripheral region 1032. The light-shielding layer 105 prevents light leakage from the edges of the cover plate 100. Because the width a of the fault space K is smaller than the width b of the light-shielding layer 105, after the cover plate 100 is subsequently cut, the width of the fault space remains smaller than the width of the light-shielding layer. The orthographic projection of the light-shielding layer on the first surface of the ultra-thin glass still covers the peripheral region of the ultra-thin glass, ensuring that all outgoing light must pass through the ultra-thin glass, the transparent optical adhesive layer, and the flexible film layer, reducing the risk of uneven light emission from the edges of the cover plate.

[0089] In one implementation of the present application, the ultra-thin glass 101 includes a first surface proximate to the transparent optical adhesive layer 102 and a second surface distal to the transparent optical adhesive layer 102, the first surface being opposite to the second surface and being parallel to each other. The protective structure 104 satisfies one or more of the following conditions: the protective structure 104 includes a first portion 1041, which covers an area proximate to the fault space K on the first surface of the ultra-thin glass 101; the protective structure 104 includes a second portion 1042, which covers an area proximate to the fault space K on the second surface of the ultra-thin glass 101; and the protective structure 104 includes a third portion 1043, which is located in the fault space K. That is, the protective structure 104 includes at least a portion of the first portion 1041, the second portion 1042, and the third portion 1043. When the protective structure 104 includes the first portion 1041, the first portion 1041 covers an area proximate to the fault space K on the first surface of the ultra-thin glass 101. When the protective structure 104 includes the second portion 1042 , the second portion 1042 covers an area on the second surface of the ultra-thin glass 101 near the fault space K. When the protective structure 104 includes the third portion 1043 , the third portion 1043 is located in the fault space K.

[0090] In one embodiment, as shown in FIG. 2 , the protection structure 104 includes a first portion 1041 , and the first portion 1041 covers an area near the fault space K on the first surface of the ultra-thin glass 101 .

[0091] In another embodiment, as shown in FIG. 3 , the protection structure 104 includes a second portion 1042 , and the second portion 1042 covers an area near the fault space K on the second surface of the ultra-thin glass 101 .

[0092] In another embodiment, as shown in FIG. 4 , FIG. 8 , FIG. 9 and FIG. 10 , the protective structure 104 includes a third portion 1043 , and the third portion 1043 is located in the fault space K.

[0093] In another embodiment, as shown in FIG5 , the protective structure 104 includes a first portion 1041 and a third portion 1043 , wherein the first portion 1041 covers an area on the first surface of the ultra-thin glass 101 near the fault space K, and the third portion 1043 is located in the fault space K.

[0094] In another embodiment, as shown in FIG6 , the protective structure 104 includes a second portion 1042 and a third portion 1043 , wherein the second portion 1042 covers an area on the second surface of the ultra-thin glass 101 near the fault space K, and the third portion 1043 is located in the fault space K.

[0095] In another embodiment, as shown in FIG7 , the protective structure 104 includes a first portion 1041, a second portion 1042, and a third portion 1043. The first portion 1041 covers an area on the first surface of the ultra-thin glass 101 near the fault space K, the second portion 1042 covers an area on the second surface of the ultra-thin glass 101 near the fault space K, and the third portion 1043 is located in the fault space K.

[0096] It should be noted that, as shown in Figures 2, 3, 4, 8, 9, or 12, when the protective structure 104 includes a portion of the first portion 1041, the second portion 1042, and the third portion 1043, the portion constitutes the protective structure 104. As shown in Figures 5, 6, or 7, when the protective structure 104 includes at least two of the first portion 1041, the second portion 1042, and the third portion 1043, the at least two portions are an integral structure. In an optional embodiment, when the protective structure 104 includes the third portion 1043, as shown in any of Figures 4 to 7 and 9 or 10, the third portion 1043 wraps around the side surface of the ultra-thin glass 101; or, as shown in Figure 8, a gap S exists between the third portion 1043 and the side surface of the ultra-thin glass 101. The side surface of the ultra-thin glass 101 intersects both the first surface and the second surface of the ultra-thin glass 101. In an optional embodiment, for the cover plate 100 shown in FIG8 , the protective structure 104 is mounted in the fault space K through a mounting process (for example, the protective structure 104 is mounted on the surface of the transparent optical adhesive layer 102 away from the flexible film layer 103 ). The gap S between the third portion 1043 and the side surface of the ultra-thin glass 101 is caused by mounting errors, and the width w of the gap S ranges from 0.1 mm to 0.2 mm (millimeter). For example, the width w of the gap S is 0.15 mm. The width w of the gap S is the dimension of the gap S in the first direction x, which is perpendicular to the thickness direction y of the cover plate 100. The width w of the gap S is also the distance between the side surface of the ultra-thin glass 101 and the side surface of the ultra-thin glass 101 on the side of the third portion 1043.

[0097] It should be noted that Figures 2 to 10 illustrate the example of a protective structure 104 located near the fault space K on at least one surface of the ultra-thin glass 101. In some embodiments, the protective structure 104 can be extended to other areas. For example, as shown in Figures 11 and 12 , the protective structure 104 extends to the second surface of the ultra-thin glass 101 (i.e., the surface of the ultra-thin glass 101 away from the transparent optical adhesive layer 102). Referring to Figures 11 and 12 , the protective structure 104 fills the fault space K and covers the second surface of the ultra-thin glass 101. For the cover plate 100 shown in Figures 11 and 12 , the thickness h of the protective structure 104 is greater than the thickness of the ultra-thin glass 101.

[0098] In an optional embodiment, the material of the protective structure 104 includes any of the following: thermally conductive adhesive, polymer, or optically clear resin (OCR) adhesive. For example, for the cover plate 100 shown in Figures 2 to 12, the material of the protective structure 104 is thermally conductive adhesive. For another example, for the cover plate 100 shown in Figures 2 to 7, the material of the protective structure 104 is thermally conductive adhesive; for the cover plates 100 shown in Figures 8, 9, and 11, the material of the protective structure 104 is polymer; and for the cover plates shown in Figures 10 and 12, the material of the protective structure 104 is OCR adhesive.

[0099] When the protective structure 104 is made of thermally conductive adhesive, the protective structure 104 has good thermal conductivity. During the laser cutting process of the cover plate 100, the protective structure 104 can dissipate the heat generated by the laser cutting, thereby preventing the heat generated by the laser cutting from affecting the ultra-thin glass 101.

[0100] In one embodiment, the material of the protective structure 104 is thermally conductive adhesive. As shown in FIG5 , the protective structure 104 includes a first portion 1041 and a third portion 1043. The first portion 1041 covers the area on the first surface of the ultra-thin glass 101 near the fault space K, while the third portion 1043 is located within the fault space K. The third portion 1043 also wraps around the side surfaces of the ultra-thin glass 101. Thus, the protective structure 104 wraps around the area on the first surface of the ultra-thin glass 101 near the fault space K and the side surfaces of the ultra-thin glass 101. The protective structure 104 can block the heat generated by laser cutting from propagating to the ultra-thin glass 101 and can quickly dissipate the heat generated by laser cutting. This can better protect the ultra-thin glass 101 and prevent it from cracking due to thermal stress.

[0101] In another embodiment, the material of the protective structure 104 is thermally conductive adhesive. As shown in FIG6 , the protective structure 104 includes a second portion 1042 and a third portion 1043. The second portion 1042 covers the area on the second surface of the ultra-thin glass 101 near the fault space K, and the third portion 1043 is located in the fault space K. The third portion 1043 also wraps around the side surface of the ultra-thin glass 101. Thus, the protective structure 104 wraps around the area on the second surface of the ultra-thin glass 101 near the fault space K and the side surface of the ultra-thin glass 101. The protective structure 104 can block the heat generated by laser cutting from propagating to the ultra-thin glass 101 and can quickly dissipate the heat generated by laser cutting. This can better protect the ultra-thin glass 101 and prevent the ultra-thin glass 101 from cracking due to thermal stress.

[0102] In another embodiment, the material of the protective structure 104 is thermally conductive adhesive. As shown in Figure 7, the protective structure 104 includes a first portion 1041, a second portion 1042 and a third portion 1043. The first portion 1041 covers the area near the fault space K on the first surface of the ultra-thin glass 101, the second portion 1042 covers the area near the fault space K on the second surface of the ultra-thin glass 101, and the third portion 1043 is located in the fault space K, and the third portion 1043 wraps the side surface of the ultra-thin glass 101. Thus, the protective structure 104 wraps the area near the fault space K on the first surface of the ultra-thin glass 101, the area near the fault space K on the second surface of the ultra-thin glass 101, and the side surface of the ultra-thin glass 101. The protective structure 104 completely wraps the portion of the ultra-thin glass 101 near the fault space K. The protective structure 104 can better block the propagation path of heat generated by laser cutting to the ultra-thin glass 101, and the protective structure 104 can better and quickly diffuse the heat generated by laser cutting. The protective structure 104 can better protect the ultra-thin glass 101 and prevent the ultra-thin glass 101 from being broken due to thermal stress.

[0103] Using Figures 5 to 7 as an example, the material of the protective structure 104 in the cover plate 100 shown in Figures 2 to 4 and 8 to 12 can also be thermally conductive adhesive. The protective structure 104 in the cover plate 100 shown in Figures 2 to 4 and 8 to 12 can also quickly dissipate the heat generated by laser cutting, preventing the ultra-thin glass 101 from being affected by thermal stress and cracking. In the embodiment of the present application, the primary function of the protective structure 104 is to protect the ultra-thin glass 101 and reduce the impact of the heat generated by laser cutting on the ultra-thin glass 101, thereby preventing the ultra-thin glass 101 from being cracked due to the heat generated by laser cutting. The portion of the ultra-thin glass 101 near the fault space K is the portion closest to the cutting surface G1 and is most susceptible to the heat generated by laser cutting. Therefore, in the embodiment of the present application, the protective structure 104 is provided on at least one surface of the ultra-thin glass 101, at least in the portion near the fault space K, to fully utilize the protective structure 104.

[0104] In an embodiment of the present application, the cover plate 100 and the display panel are cut as one piece after being assembled with the cover plate 100. The design of the shrinkage a of the side surface of the ultra-thin glass 101 (that is, the width of the fault space K) needs to take into account the tolerance a1 between the light-shielding layer 105 and the side surface of the ultra-thin glass 101, the tolerance a2 between the light-shielding layer 105 and the effective display area (Active Area, AA) of the display panel, the alignment accuracy a3 of the laser cutting, and the length d of the heat-affected zone of the laser cutting. Moreover, the smaller the width a of the fault space K, the better, so that the edge support strength of the cover plate 100 can be improved under the existing level. Usually, the shrinkage a of the side surface of the ultra-thin glass 101 is the square root of the sum of the squares of a1, a2 and a3 plus the length d of the heat-affected zone, that is, In the embodiment of the present application, since the protective structure 104 is provided, when the material of the protective structure 104 is a thermally conductive adhesive, the protective structure 104 can quickly diffuse the heat generated by the laser cutting. Therefore, when designing the indentation a of the side surface of the ultra-thin glass 101, the length d of the heat-affected zone of the laser cutting can be ignored. The width a of the fault space K can be the square root of the sum of the squares of a1, a2 and a3, that is, This helps to reduce the shrinkage of the side surface of the ultra-thin glass 101.

[0105] In an optional embodiment, referring to Figures 2 to 10 , the protective structure 104 satisfies one or more of the following conditions: the width d1 of the first portion 1041 is no greater than (i.e., less than or equal to) the width b of the light shielding layer 105; the thickness h1 of the first portion 1041 is less than the thickness of the transparent optical adhesive layer 102; the width d2 of the second portion 1042 is no greater than the width b of the light shielding layer 105; the thickness h2 of the second portion 1042 is less than the thickness of the transparent optical adhesive layer 105; the width d3 of the third portion 1043 is no greater than the width a of the fault space K (i.e., the third portion 1043 does not extend beyond the side surface of the transparent optical adhesive layer 102); and the thickness h3 of the third portion 1043 is equal to the thickness of the ultra-thin glass 101. For example, Figures 2, 5, and 7 illustrate a case where the width d1 of the first portion 1041 is less than the width b of the light shielding layer 105, and Figures 3, 6, and 7 illustrate a case where the width d2 of the second portion 1042 is less than the width b of the light shielding layer 105. Because the fault space K is formed by the side surface of the ultra-thin glass 101 being indented relative to the side surface of the transparent optical adhesive layer 102, the third portion 1043 is located within the fault space K. Furthermore, the width d3 of the third portion 1043 is no greater than the width a of the fault space K. Therefore, the third portion 1043 does not extend beyond the side surface of the transparent optical adhesive layer 102. Specifically, the width d1 of the first portion 1041 is the dimension of the first portion 1041 in the first direction x, and the thickness h1 of the first portion 1041 is the dimension of the first portion 1041 in the second direction y (i.e., the thickness direction of the cover plate 100). The width d2 of the second portion 1042 is the dimension of the second portion 1042 in the first direction x, and the thickness h2 of the second portion 1042 is the dimension of the second portion 1042 in the second direction y. The width d3 of the third portion 1043 is the dimension of the third portion 1043 in the first direction x, and the thickness h3 of the third portion 1043 is the dimension of the third portion 1043 in the second direction y. The width b of the light shielding layer 105 is the dimension of the light shielding layer 105 in the first direction x, the thickness of the transparent optical adhesive layer 102 is the dimension of the transparent optical adhesive layer 102 in the second direction y, and the thickness of the ultra-thin glass 101 is the dimension of the ultra-thin glass 101 in the second direction y.

[0106] In the embodiment of the present application, the first portion 1041 covers the area near the fault space K on the first surface of the ultra-thin glass 101, and the width d1 of the first portion 1041 is no greater than the width b of the light-shielding layer 105. This allows the entire perimeter of the cover plate 100 to appear graphite black, ensuring a consistent appearance. The thickness h1 of the first portion 1041 is less than the thickness of the transparent optical adhesive layer 102, allowing the protective structure 104 to protect the ultra-thin glass 101 without increasing the thickness of the cover plate 100, thereby facilitating a thinner and lighter cover plate 100. The second portion 1042 covers the area near the fault space K on the second surface of the ultra-thin glass 101, and the width d2 of the second portion 1042 is no greater than the width b of the light-shielding layer 105. This allows the entire perimeter of the cover plate 100 to appear graphite black, ensuring a consistent appearance. The thickness h2 of the second portion 1042 is less than the thickness of the transparent optical adhesive layer 105 , so that the protection structure 104 protects the ultra-thin glass 101 without increasing the thickness of the cover plate 100 , which is conducive to reducing the thickness of the cover plate 100 .

[0107] In an optional embodiment, referring to Figures 2 to 10 , the protective structure 104 satisfies one or more of the following conditions: the width d1 of the first portion 1041 is no greater than 500 μm (micrometers); the thickness h1 of the first portion 1041 is no greater than 5 μm; the width d2 of the second portion 1042 is no greater than 500 μm; the thickness h2 of the second portion 1042 is no greater than 5 μm; and the width d3 of the third portion 1043 is no greater than 50 μm. For example, the width d1 of the first portion 1041 is 500 μm, 450 μm, or 400 μm, and the thickness h1 of the first portion 1041 is 5 μm, 4.5 μm, or 4 μm. The width d2 of the second portion 1042 is 500 μm, 450 μm, or 400 μm, and the thickness h2 of the second portion 1042 is 5 μm, 4.5 μm, or 4 μm. The width d3 of the third portion 1043 is 50 μm, 45 μm, or 40 μm.

[0108] Because the first portion 1041 covers the area near the fault space K on the first surface of the ultra-thin glass 101, the first portion 1041 is easily affected by the heat generated by laser cutting. In the embodiment of the present application, the width d1 of the first portion 1041 is designed to be no greater than 500 μm. When the material of the protective structure 400 is thermally conductive adhesive, the first portion 1041 can minimize the impact of the heat generated by laser cutting on the ultra-thin glass 101, thereby preventing the ultra-thin glass 101 from cracking. Because the second portion 1042 covers the area near the fault space K on the second surface of the ultra-thin glass 101, the second portion 1042 is easily affected by the heat generated by laser cutting. In the embodiment of the present application, the width d2 of the second portion 1042 is designed to be no greater than 500 μm. When the material of the protective structure 400 is thermally conductive adhesive, the second portion 1042 can minimize the impact of the heat generated by laser cutting on the ultra-thin glass 101, thereby preventing the ultra-thin glass 101 from cracking. In addition, the thickness h1 of the first portion 1041 is no greater than 5 μm, which is beneficial to reducing the thickness of the cover plate 100. The thickness h2 of the second portion 1042 is no greater than 5 μm, which is beneficial to reducing the thickness of the cover plate 100. The third portion 1043 is the portion closest to the heat-affected zone of the laser cutting (for example, as shown in Figures 4 to 7), or the third portion 1043 is located in the heat-affected zone of the laser cutting (for example, as shown in Figures 8 to 10). When the material of the protective structure 400 is thermally conductive adhesive, the third portion 1043 can effectively absorb the heat generated by the laser cutting. The width d3 of the third portion 1043 is no greater than 50 μm, so that the third portion 1043 can not only effectively absorb the heat generated by the laser cutting, but also help save the material of the thermally conductive adhesive.

[0109] In an optional embodiment, the thermally conductive adhesive includes a resin and a filler, wherein the filler is a thermally conductive and insulating material. The resin is the base material of the thermally conductive adhesive and primarily serves as a curing agent. The filler is an insulating material with excellent thermal conductivity that primarily improves the thermal conductivity of the thermally conductive adhesive. The thermally conductive adhesive, composed of the resin and filler, allows the protective structure 104 fabricated using the thermally conductive adhesive to adhere well to the surface of the ultra-thin glass 101 and provide excellent heat dissipation capabilities.

[0110] In an optional embodiment, the filler in the thermally conductive adhesive includes one or more of the following: aluminum nitride (AlN), boron nitride (BN), silicon nitride (Si3N4), aluminum oxide (Al2O3), magnesium oxide (MgO), or zinc oxide (ZnO). In the case where the filler includes a combination of multiple materials, the multiple materials are only physically mixed and do not react with each other.

[0111] In an optional embodiment, the material of the protective structure 104 includes a polymer. For example, for the cover plate 100 shown in Figures 8, 9, and 11, the material of the protective structure 104 is all polymer. For the cover plate 100 shown in Figures 8, 9, and 11, the protective structure 104 will be cut during the integrated cutting process of the cover plate 100 and the display panel. This can reduce the risk of directly cutting into the air layer, thereby reducing defects such as rainbow patterns and reliability warping of the display panel. In addition, the flexible film layer 103 is bonded to the ultra-thin glass 101 via a transparent optical adhesive layer 102. During the integrated cutting process of the cover plate 100 and the display panel, the transparent optical adhesive layer 102 has a tendency to pull the flexible film layer 103 downward. If the fault space K is not filled properly, resulting in direct cutting into the air layer of the fault space K, the flexible film layer 103 is easily deformed during the cutting process, forming an external dent. Therefore, the cover plate 100 shown in Figures 8, 9, and 11 can also improve the problem of external dents on the flexible film layer 103 during the cutting process.

[0112] In an optional embodiment, the polymer includes one or more of the following combinations: polyimide (PI), polyethylene terephthalate (PET), thermoplastic polyurethanes (TPU), polymethyl methacrylate (PMMA), or polyurethane (PU). For example, for the cover plate 100 shown in FIG8 , the material of the protective structure 104 is a film material such as PI, PET, or TPU. The protective structure 104 is mounted in the fault space K through a mounting process. The gap S between the third portion 1043 (i.e., the protective structure 104) and the side surface of the ultra-thin glass 101 is caused by mounting errors. For another example, for the cover plate 100 shown in FIG9 , the material of the protective structure 104 is a liquid coating material such as PMMA or PU, and the protective structure 104 is formed by applying a liquid coating material such as PMMA or PU in the fault space K (for example, applying a liquid coating material such as PMMA or PU on the surface of the transparent optical adhesive layer 102 away from the flexible film layer 103), and curing the applied liquid coating material. The coating method can be needle coating, spray valve head dispensing coating, or inkjet printing. The curing method can be thermal curing or ultraviolet (UV) curing. For example, PMMA with a viscosity of 100 centipoise (cps) is used to form the protective structure 104 by spray valve head dispensing coating and UV curing. The tensile modulus of the protective structure 104 is approximately 3 GPa (gigapascals). The protective structure 104 formed by coating and curing can contact the side surface of the ultra-thin glass 101, without creating a gap S between the protective structure 104 and the side surface of the ultra-thin glass 101, which helps improve processing accuracy. The tensile modulus of the protective structure 104 is used to indicate the degree of deformation of the protective structure 104 under tensile stress and is used to indicate the stiffness and elastic properties of the protective structure 104.

[0113] Among them, PI is an organic polymer material with excellent high temperature resistance and a heat resistance temperature of over 400°C. Therefore, as the material of the protective structure 104, it is not easily deformed by heat and can play a good supporting role. PET is a polymer compound with excellent physical and mechanical properties in a wide temperature range and a heat resistance temperature of up to 120°C. It has good creep resistance, fatigue resistance, friction resistance, and dimensional stability. Therefore, as the material of the protective structure 104, it is not easily deformed by heat and can play a good supporting role, avoiding the display panel from producing rainbow lines and reliability warping during the cutting process. TPU has very good elasticity and flexibility, excellent rebound performance and fatigue life. It has very good elasticity and can be used in a wide temperature range. It also has excellent compressive resistance. Therefore, as the material of the protective structure 104, it can play a good supporting role, avoiding the display panel from producing rainbow lines and reliability warping during the cutting process. PMMA is a high molecular polymer, also known as acrylic or organic glass. It has advantages such as high transparency, low price, and easy machining. It also has high mechanical strength and good toughness, making it resistant to breakage. Therefore, as the material for protective structure 104, it can effectively improve the support strength at the fault space K, making the flexible film layer 103 less likely to deform during the cutting process. Due to its good toughness, it also reduces debris during the cutting process, preventing debris from entering the display panel and causing display panel defects. PU is a high molecular material with excellent flexibility and elasticity. Therefore, as the material for protective structure 104, it can provide excellent support, preventing the display panel from producing rainbow patterns and reliability warping during the cutting process.

[0114] In an optional embodiment, the material of the protective structure 104 includes OCR glue. For example, for the cover plates shown in Figures 10 and 12, the material of the protective structure 104 is both OCR glue. As shown in Figure 10, the protective structure 104 is filled in the fault space K (the fault space K is not marked in Figure 10, please refer to Figures 2 to 7 for the position of the fault space K), and the thickness of the protective structure 104 is equal to the thickness of the ultra-thin glass 101. As shown in Figure 12, the protective structure 104 fills the fault space K and covers the surface of the ultra-thin glass 101 away from the transparent optical adhesive layer 102 (that is, the second surface of the ultra-thin glass 101), and the thickness of the protective structure 104 is greater than the thickness of the ultra-thin glass 101. OCR glue is a liquid optical glue. When the material of the protective structure 104 is OCR glue, the protective structure 104 can be formed by inkjet printing. The protective structure 104 can be in close contact with the ultra-thin glass 101, so that the protective structure 104 can fill the fault space K. For the cover plate 100 shown in Figure 12, the protective structure 104 can also cover the surface of the ultra-thin glass 101 away from the transparent optical adhesive layer 102, and the protective structure 104 half-wraps the ultra-thin glass 101. The protective structure 104 is in close contact with the ultra-thin glass 101, and the protective structure 104 can also play a role in fixing the ultra-thin glass 101. After curing, the OCR glue is colorless and transparent, with a transmittance of more than 98%, and has little effect on the transmittance of the display panel. Therefore, OCR glue is used to form a protective structure 104 covering the second surface of the ultra-thin glass 101, so that the protective structure 104 half-wraps the ultra-thin glass 101, which better protects the ultra-thin glass 101. The protective structure 104 fills the fault space K, which can avoid defects such as rainbow patterns and reliability warping of the display panel during the cutting process. In addition, OCR glue also has the characteristics of low curing shrinkage and yellowing resistance.

[0115] In an optional embodiment, the flexible film layer 103 is a transparent organic film. The material of the flexible film layer 103 includes one or more of the following: PI, PET, cyclo olefin polymer (COP), and triacetyl cellulose (TAC).

[0116] In an optional embodiment, the thickness of the flexible film layer 103 ranges from 20 μm to 200 μm, the thickness of the transparent optical adhesive layer 102 ranges from 10 μm to 100 μm, and the thickness of the ultra-thin glass 101 ranges from 10 μm to 100 μm. For example, the thickness of the flexible film layer 103 is 50 μm, 75 μm, 100 μm, or 150 μm, the thickness of the transparent optical adhesive layer 102 is 35 μm, 50 μm, 75 μm, or 100 μm, and the thickness of the ultra-thin glass 101 is 25 μm, 30 μm, or 40 μm. Depending on the material of the flexible film layer 103, the thickness of the flexible film layer 103 also varies. Depending on the material of the transparent optical adhesive layer 102, the thickness of the transparent optical adhesive layer 102 also varies. The thickness of the ultra-thin glass 101 can be appropriately adjusted according to the thickness of the flexible film layer 103 and the thickness of the transparent optical adhesive layer 102, so that the thickness of the cover plate 100 is within an appropriate range, which can not only meet the thickness requirements of the cover plate 100, but also improve the mechanical properties of the cover plate 100, such as impact resistance.

[0117] In an optional embodiment, the tensile modulus of the transparent optical adhesive layer 102 at room temperature is greater than 20KPa (kilopascals) and less than 100KPa. The tensile modulus is used to characterize the degree of deformation of a material under tensile stress, and is used to characterize the stiffness and elastic properties of the material. If the tensile modulus of the transparent optical adhesive layer 102 at room temperature is less than 20KPa, the stiffness of the transparent optical adhesive layer 102 is too small, resulting in the stiffness of the cover plate 100 being too small, which in turn results in poor impact resistance of the cover plate 100. If the tensile modulus of the transparent optical adhesive layer 102 at room temperature is greater than 100KPa, the stiffness of the optical adhesive layer 102 is too large, resulting in the stiffness of the cover plate 100 being too large, which is not conducive to bending. Therefore, in the embodiment of the present application, the tensile modulus of the transparent optical adhesive layer 102 at room temperature is set to be greater than 20KPa and less than 100KPa, which ensures that the cover plate 100 can be bent well, and the stiffness of the cover plate 100 is greater, and the impact resistance of the cover plate 100 is higher. After the cover plate 100 is assembled with the display panel, the cover plate 100 can protect the display panel and reduce the risk of damage to the display panel under external impact, thereby reducing the risk of problems such as bright spots or packaging cracks in the display device and extending the service life of the display device.

[0118] In an optional embodiment, the material of the transparent optical adhesive layer 102 includes optically clear adhesive (OCA) or OCR adhesive. For example, for the cover plate 100 shown in Figures 2 to 12, the material of the transparent optical adhesive layer 102 is all OCA adhesive. Alternatively, for the cover plate 100 shown in Figures 2 to 9 and 11, the material of the transparent optical adhesive layer 102 is all OCA adhesive; for the cover plate 100 shown in Figures 10 and 12, the material of the transparent optical adhesive layer 102 is all OCR adhesive.

[0119] Among them, OCA glue is an adhesive used to bond transparent optical components (such as lenses). OCA glue is colorless and transparent, has good light transmittance (light transmittance is above 95%), good bonding strength, high adhesion, good water resistance, high temperature resistance, and UV resistance. It can be cured at room temperature or medium temperature, has low curing shrinkage, and will not yellow, peel, or deteriorate after long-term use. OCR glue is a liquid optical glue. OCR glue is colorless and transparent, has good light transmittance (light transmittance is above 98%), has low curing shrinkage, and is resistant to yellowing.

[0120] In an optional embodiment, the material of the protective structure 104 is the same as the material of the transparent optical adhesive layer 102, and the protective structure 104 and the transparent optical adhesive layer 102 are an integral structure. For example, as shown in Figures 10 and 12, the material of the protective structure 104 and the material of the transparent optical adhesive layer 102 are both OCR adhesive, and the protective structure 104 and the transparent optical adhesive layer 102 are an integral structure. In the case where the material of the protective structure 104 is the same as the material of the transparent optical adhesive layer 102, the protective structure 104 and the transparent optical adhesive layer 102 can be formed in one step. For example, the material of the protective structure 104 and the material of the transparent optical adhesive layer 102 are both OCR adhesive, and the protective structure 104 and the transparent optical adhesive layer 102 are formed in one step by inkjet printing. The one-step molding of the protective structure 104 and the transparent optical adhesive layer 102 can simplify the manufacturing process of the cover plate 100, and can reduce the process of intermediate splicing and alignment, which can improve the manufacturing accuracy on the one hand and improve the manufacturing efficiency on the other.

[0121] As shown in Figure 10, the materials of the protective structure 104 and the transparent optical adhesive layer 102 are both OCR adhesive. The transparent optical adhesive layer 102 and the protective structure 104 semi-wrap the ultra-thin glass 101. The transparent optical adhesive layer 102 and the protective structure 104 can both protect the ultra-thin glass 101, and can better protect the ultra-thin glass 101. The protective structure 104 is filled in the fault space K (the fault space K is not marked in Figure 10, please refer to Figures 2 to 7 for the position of the fault space K), which can avoid defects such as rainbow patterns and reliability warping of the display panel during the cutting process. As shown in Figure 12, the materials of the protective structure 104 and the transparent optical adhesive layer 102 are both OCR adhesive. The transparent optical adhesive layer 102 and the protective structure 104 fully wrap the ultra-thin glass 101. The transparent optical adhesive layer 102 and the protective structure 104 can both protect the ultra-thin glass 101, and can better protect the ultra-thin glass 101. The protective structure 104 is filled in the fault space K (the fault space K is not marked in Figure 12, please refer to Figures 2 to 7 for the position of the fault space K), which can avoid defects such as rainbow patterns and reliability warping of the display panel during the cutting process.

[0122] In an optional embodiment, as shown in Figures 1 to 12, the cover plate 100 further includes a first protective film 106 and a second protective film 107. The first protective film 106 is located on the side of the ultra-thin glass 101 away from the transparent optical adhesive layer 102. The first protective film 106 covers the second surface of the ultra-thin glass 101 (i.e., the surface of the ultra-thin glass 101 away from the transparent optical adhesive layer 102) and / or the surface of the protective structure 104 away from the transparent optical adhesive layer 102. The second protective film 107 is located on the side of the flexible film layer 103 away from the ultra-thin glass 101. The second protective film 107 covers the surface of the flexible film layer 103 away from the ultra-thin glass 101. For example, as shown in Figure 2, the first protective film 106 covers the second surface of the ultra-thin glass 101. For example, as shown in Figures 3 to 10, the first protective film 106 covers the second surface of the ultra-thin glass 101 and the surface of the protective structure 104 away from the transparent optical adhesive layer 102. For example, as shown in Figures 11 and 12, the first protective film 106 covers the surface of the protective structure 104 away from the transparent optical adhesive layer 102. The first protective film 106 can protect the second surface of the ultra-thin glass 101 and / or the surface of the protective structure 104 away from the transparent optical adhesive layer 102 to prevent scratches. The second protective film 107 can protect the surface of the flexible film layer 103 away from the ultra-thin glass 101 to prevent scratches. It should be noted that the first protective film 106 and the second protective film 107 are used to protect the cover plate 100 when the cover plate 100 exists independently. Before assembling the cover plate 100 with the display panel, for example, before pasting the cover plate 100 on the light-emitting surface of the display panel, the first protective film 106 and the second protective film 107 in the cover plate 100 can be peeled off. This embodiment of the present application does not limit this.

[0123] In an optional embodiment, as shown in Figures 2 to 12, the light-shielding layer 105 is located on the surface of the flexible film layer 103 near the transparent optical adhesive layer 102. The light-shielding layer 105 is made of a light-shielding material. The light-shielding layer 105 can be formed by coating the light-shielding material on the surface of the flexible film layer 103 near the transparent optical adhesive layer 102 in the peripheral area 1032 of the flexible film layer 103. This eliminates the need for regionalized manufacturing of the flexible film layer 103, simplifies the manufacturing process of the flexible film layer 103, and facilitates controlling the width of the light-shielding layer 105 by controlling the coating area, making it simple and easy to implement. In an optional embodiment, the light-shielding material includes, but is not limited to, ink. Ink has a good light-shielding effect and can prevent light leakage from the edges of the cover plate 100. The ink can be applied to the flexible film layer 103 by coating, inkjet printing, or other methods, making it simple and easy to apply. The optical density (OD) of the ink is greater than or equal to 2. The width of the light-shielding layer 105 is determined based on the product's visual area (VA) design.

[0124] The following specific embodiments are given to illustrate the present application.

[0125] Embodiment (I): As shown in FIG8 , the cover plate 100 includes an ultrathin glass 101, a transparent optical adhesive layer 102 located on one side of the ultrathin glass 101, a flexible film layer 103 located on the side of the transparent optical adhesive layer 102 away from the ultrathin glass 101, and a light-shielding layer 105 located in a peripheral region 1032 of the flexible film layer 103. The side surface of the flexible film layer 103 is flush with the side surface of the transparent optical adhesive layer 102. The side surface of the ultrathin glass 101 is indented relative to the side surface of the transparent optical adhesive layer 102, forming a fault space K between the side surface of the ultrathin glass 101 and the surface of the transparent optical adhesive layer 102 proximal to the ultrathin glass 101. The protective structure 104 is located in the fault space K. The flexible film layer 103 is made of PET and has a thickness of 75 μm. The light-shielding layer 105 is made of ink having an OD greater than 2. The width of the light-shielding layer 105 is determined based on the product's VA area design. The material of the transparent optical adhesive layer 102 is OCA adhesive, specifically acrylic OCA adhesive. The tensile modulus of the transparent optical adhesive layer 102 at room temperature is 30Kpa, and the thickness of the transparent optical adhesive layer 102 is 35μm. The thickness of the ultra-thin glass 101 is 30μm. The material of the protective structure 104 is a polymer, specifically PET, transparent polyimide (colorless polyimide, CPI), TPU and other film materials. The thickness of the protective structure 104 is equal to the thickness of the ultra-thin glass 101, and the protective structure 104 is distributed in the same layer as the ultra-thin glass 101. The protective structure 104 is mounted in the fault space K through a mounting process. Considering the mounting tolerance and the incoming material tolerance, the width w of the gap S between the protective structure 104 and the side surface of the ultra-thin glass 101 is in the range of 0.1mm-0.2mm.

[0126] In this embodiment (I), the material of the flexible film layer 103 is PET, the thickness of the flexible film layer 103 is 75 μm, the thickness of the ultra-thin glass 101 is 30 μm, the protective structure 104 is located in the fault space K, and the material of the protective structure 104 is a film material such as PET, PI or TPU. The thickness of the protective structure 104 is equal to the thickness of the ultra-thin glass 101. These designs are more conducive to controlling the thickness of the cover plate 100 within an appropriate range and improving the impact resistance of the cover plate 100. In addition, the protective structure 104 is located in the fault space K, which effectively compensates for the step difference caused by the inward shrinkage of the side surface of the ultra-thin glass 101. Since the protective structure 104 fills the fault space K, the air layer will not be cut during the integrated cutting process of the cover plate 100 and the display panel, which can avoid the appearance of rainbow lines and dents on the display panel due to cutting the air layer. The light-shielding layer 105 is made of ink with an OD greater than 2, which prevents light leakage from the edges of the cover plate 100. The transparent optical adhesive layer 102 is made of acrylic OCA adhesive, and has a tensile modulus of 30 kPa at room temperature. This ensures both good rigidity and flexibility, improving the impact resistance of the cover plate 100. The thickness of the transparent optical adhesive layer 102 is 35 μm, which helps to control the thickness of the cover plate 100 within an appropriate range.

[0127] Example (II): As shown in FIG9 , the cover plate 100 includes an ultrathin glass 101, a transparent optical adhesive layer 102 located on one side of the ultrathin glass 101, a flexible film layer 103 located on the side of the transparent optical adhesive layer 102 facing away from the ultrathin glass 101, and a light-shielding layer 105 located in a peripheral region 1032 of the flexible film layer 103. The side surface of the flexible film layer 103 is flush with the side surface of the transparent optical adhesive layer 102. The side surface of the ultrathin glass 101 is indented relative to the side surface of the transparent optical adhesive layer 102, forming a fault space K between the side surface of the ultrathin glass 101 and the surface of the transparent optical adhesive layer 102 proximal to the ultrathin glass 101. A protective structure 104 is located within the fault space K. The flexible film layer 103 is made of CPI and has a thickness of 50 μm. The light-shielding layer 1032 is made of ink having an OD greater than 2. The width of the light-shielding layer 105 is determined based on the product's VA zone design. The material of the transparent optical adhesive layer 102 is OCA glue, specifically acrylic OCA glue. The tensile modulus of the transparent optical adhesive layer 102 at room temperature is 35Kpa, and the thickness of the transparent optical adhesive layer 102 is 50μm. The thickness of the ultra-thin glass 101 is 30μm. The material of the protective structure 104 is a polymer, specifically a liquid coating material such as PMMA or PU. The thickness of the protective structure 104 is equal to the thickness of the ultra-thin glass 101. The protective structure 104 is distributed in the same layer as the ultra-thin glass 101, and the protective structure 104 is filled in the fault space K. The protective structure 104 is formed by applying a liquid coating material such as PMMA or PU in the fault space K, and curing the applied liquid coating material. The coating method can be needle coating or spray valve head dispensing coating, or inkjet printing. The curing method can be thermal curing or UV curing. For example, the protective structure 104 is formed using an acrylic material with a viscosity of 100 cps, via a dispensing coating method using a spray valve head and UV curing. The tensile modulus of the protective structure 104 is approximately 3 GPa. The protective structure 104 formed by the coating and curing methods can contact the side surface of the ultra-thin glass 101, and no gap S is generated between the protective structure 104 and the side surface of the ultra-thin glass 101.

[0128] In this embodiment (two), the material of the flexible film layer 103 is CPI, the thickness of the flexible film layer 103 is 50 μm, the thickness of the ultra-thin glass 101 is 30 μm, the protective structure 104 is located in the fault space K, the material of the protective structure 104 is a liquid coating material such as PMMA or PU, and the thickness of the protective structure 104 is equal to the thickness of the ultra-thin glass 101. These designs are conducive to controlling the thickness of the cover plate 100 within an appropriate range and improving the impact resistance of the cover plate 100. In addition, the protective structure 104 is located in the fault space K, which effectively compensates for the step difference caused by the inward shrinkage of the side surface of the ultra-thin glass 101. Since the protective structure 104 fills the fault space K, the air layer will not be cut during the integrated cutting of the cover plate 100 and the display panel, which can avoid the appearance of rainbow lines and dents on the display panel due to cutting the air layer. Since the protective structure 104 is formed by coating and curing, the protective structure 104 can be in close contact with the side surface of the ultra-thin glass 101, which is beneficial to improving the coating accuracy. The material of the light-shielding layer 105 is ink with an OD greater than 2, and the light-shielding layer 105 can prevent light leakage from the edge of the cover plate 100. The material of the transparent optical adhesive layer 102 is acrylic OCA adhesive. The tensile modulus of the transparent optical adhesive layer 102 at room temperature is 35Kpa, which makes the transparent optical adhesive layer 102 have good rigidity and good bendability, thereby improving the impact resistance of the cover plate 100. The thickness of the transparent optical adhesive layer 102 is 50μm, which is beneficial to control the thickness of the cover plate 100 within an appropriate range and improve the impact resistance of the cover plate 100.

[0129] Embodiment (three): As shown in FIG12 , the cover plate 100 includes an ultra-thin glass 101, a transparent optical adhesive layer 102 located on one side of the ultra-thin glass 101, a flexible film layer 103 located on the side of the transparent optical adhesive layer 102 away from the ultra-thin glass 101, and a light-shielding layer 105 located in a peripheral area 1032 of the flexible film layer 103. The side surface of the flexible film layer 103 is flush with the side surface of the transparent optical adhesive layer 102. The side surface of the ultra-thin glass 101 is indented relative to the side surface of the transparent optical adhesive layer 102, forming a fault space K between the side surface of the ultra-thin glass 101 and the surface of the transparent optical adhesive layer 102 close to the ultra-thin glass 101. The protective structure 104 fills the fault space K and covers the surface of the ultra-thin glass 101 away from the transparent optical adhesive layer 102 (i.e., the second surface of the ultra-thin glass 101). The flexible film layer 103 is made of TPU and has a thickness of 100 μm. The material of the light-shielding layer 1032 is ink, and the OD of the ink is greater than 2. The width of the light-shielding layer 105 is determined according to the design of the product VA area. The material of the transparent optical adhesive layer 102 and the material of the protective structure 104 are both OCR adhesive. The transparent optical adhesive layer 102 and the protective structure 104 are an integrated structure, and the transparent optical adhesive layer 102 and the protective structure 104 fully wrap the ultra-thin glass 101. Among them, the OCR adhesive can be an acrylic OCR adhesive. The tensile modulus of the transparent optical adhesive layer 102 at room temperature is 30Kpa. The thickness of the transparent optical adhesive layer 102 and the thickness of the part of the protective structure 104 covering the second surface of the ultra-thin glass 101 are both 50μm. The thickness of the ultra-thin glass 101 is 30μm. The transparent optical adhesive layer 102 and the protective structure 104 can be prepared by inkjet printing. The protective structure 104 prepared in this way can be in close contact with the side wall surface of the ultra-thin glass 101 and the second surface of the ultra-thin glass 101.

[0130] In this embodiment (three), the material of the flexible film layer 103 is TPU, the thickness of the flexible film layer 103 is 100μm, the thickness of the ultra-thin glass 101 is 30μm, and the ultra-thin glass 101 is fully wrapped by OCR glue (transparent optical adhesive layer 102 and protective structure 104). These designs make it unnecessary to fill the fault space K separately, which is conducive to simplifying the manufacturing process of the cover plate 100, and is conducive to controlling the thickness of the cover plate 100 within an appropriate range and improving the impact resistance of the cover plate 100. In addition, the ultra-thin glass 101 is fully wrapped by OCR glue, and the OCR glue effectively fills the fault space K. In the process of integrated cutting of the cover plate 100 and the display panel, the air layer will not be cut, which can avoid the defective appearance of rainbow lines and dents on the display panel caused by cutting the air layer. The transparent optical adhesive layer 102 and the protective structure 104 can be prepared by inkjet printing, so the transparent optical adhesive layer 102 and the protective structure 104 can be in close contact with the ultra-thin glass 101, which is conducive to improving the coating accuracy. The thickness of the transparent optical adhesive layer 102 and the portion of the protective structure 104 covering the second surface of the ultra-thin glass 101 are both 50 μm, which helps control the thickness of the cover plate 100 within an appropriate range. The transparent optical adhesive layer 102 has a tensile modulus of 30 kPa at room temperature, and the ultra-thin glass 101 is fully encapsulated with OCR adhesive. This ensures that the transparent optical adhesive layer 102 has good rigidity while also providing good bendability, thereby improving the impact resistance of the cover plate 100. The light-shielding layer 105 is made of ink with an OD greater than 2, which prevents light leakage from the edges of the cover plate 100.

[0131] Based on the same inventive concept, an embodiment of the present application provides a method for manufacturing a display module. Please refer to FIG13 , which shows a flow chart of a method for manufacturing a display module provided by an embodiment of the present application. As shown in FIG13 , the manufacturing method includes the following steps S1301 to S1303 .

[0132] S1301. Provide a display panel and a cover plate, the cover plate comprising an ultra-thin glass, a transparent optical adhesive layer located on one side of the ultra-thin glass, and a flexible film layer located on a side of the transparent optical adhesive layer away from the ultra-thin glass, the side surface of the flexible film layer is flush with the side surface of the transparent optical adhesive layer, the side surface of the ultra-thin glass is retracted relative to the side surface of the transparent optical adhesive layer to form a fault space between the side surface of the ultra-thin glass and the surface of the transparent optical adhesive layer close to the ultra-thin glass, and at least a portion close to the fault space on at least one surface of the ultra-thin glass has a protective structure.

[0133] Among them, the display panel can be a flexible display panel. The display panel includes a flexible substrate, a thin film transistor (TFT) circuit layer located on the flexible substrate, a display layer located on the side of the TFT circuit layer away from the flexible substrate, and an encapsulation structure located on the side of the display layer away from the flexible substrate. The display layer includes a display device, and the display device can be an organic light emitting diode (OLED) display device or a micro light emitting diode (microLED) display device. The encapsulation structure can be a thin film encapsulation structure, and the encapsulation structure can be a multilayer composite structure formed by stacking inorganic layers and organic layers. For example, the encapsulation structure is a three-layer composite structure formed by stacking a first inorganic layer, an organic layer, and a second inorganic layer in sequence. The material of the first inorganic layer can be silicon oxynitride (SiON), the material of the organic layer can be an acrylic material, and the material of the second inorganic layer can be silicon nitride (SiN). In an optional embodiment, the display panel also includes a touch layer located on the side of the encapsulation structure away from the flexible substrate. The material of the flexible substrate can be PI. In addition to the display device, the display layer can also include structures such as a protective film, a polarizer, or a color filter layer. The specific structure of the display panel does not fall within the scope of discussion in this application, so it will not be described in detail.

[0134] The cover plate may be the cover plate 100 shown in any one of Figures 1 to 12. In an optional embodiment, as shown in Figures 1 to 12, the cover plate 100 further includes a light-shielding layer 105 located in a peripheral region 1032 of the flexible film layer 103, a first protective film 106 located on a side of the ultra-thin glass 101 away from the transparent optical adhesive layer 102, and a second protective film 107 located on a side of the flexible film layer 103 away from the ultra-thin glass 101. For the specific structure of the cover plate 100, please refer to Figures 2 to 12 and will not be described in detail here.

[0135] S1302. Paste the cover plate on the light-emitting surface of the display panel so that the orthographic projection of the cutting line of the cover plate on the light-emitting surface coincides with the orthographic projection of the cutting line of the display panel on the light-emitting surface.

[0136] Among them, both the cover plate 100 and the display panel have cutting lines. In the process of pasting the cover plate 100 on the light-emitting surface of the display panel, the cover plate 100 and the display panel are aligned so that the cutting line of the cover plate 100 is aligned with the cutting line of the display panel, so that the orthographic projection of the cutting line of the cover plate 100 on the light-emitting surface of the display panel coincides with the orthographic projection of the cutting line of the display panel on the light-emitting surface of the display panel.

[0137] In an optional embodiment, the cover plate 100 further includes a first protective film 106 and a second protective film 107, which are used to protect the cover plate 100 when the cover plate 100 exists independently. Before the cover plate 100 is pasted on the light-emitting surface of the display panel, the first protective film 106 and the second protective film 107 in the cover plate 100 are peeled off.

[0138] Please refer to Figures 14 to 24, which show schematic diagrams of the cover plate 100 provided by the embodiments of the present application after being pasted on the light-emitting surface of the display panel 200. Figure 14 is a schematic diagram of the cover plate 100 shown in Figure 2 after being pasted on the light-emitting surface of the display panel 200. Figure 15 is a schematic diagram of the cover plate 100 shown in Figure 3 after being pasted on the light-emitting surface of the display panel 200. Figure 16 is a schematic diagram of the cover plate 100 shown in Figure 4 after being pasted on the light-emitting surface of the display panel 200. Figure 17 is a schematic diagram of the cover plate 100 shown in Figure 5 after being pasted on the light-emitting surface of the display panel 200. Figure 18 is a schematic diagram of the cover plate 100 shown in Figure 6 after being pasted on the light-emitting surface of the display panel 200. Figure 19 is a schematic diagram of the cover plate 100 shown in Figure 7 after being pasted on the light-emitting surface of the display panel 200. Figure 20 is a schematic diagram of the cover plate 100 shown in Figure 8 after being pasted on the light-emitting surface of the display panel 200. Figure 21 is a schematic diagram after the cover plate 100 shown in Figure 9 is pasted on the light-emitting surface of the display panel 200. Figure 22 is a schematic diagram after the cover plate 100 shown in Figure 10 is pasted on the light-emitting surface of the display panel 200. Figure 23 is a schematic diagram after the cover plate 100 shown in Figure 11 is pasted on the light-emitting surface of the display panel 200. Figure 24 is a schematic diagram after the cover plate 100 shown in Figure 12 is pasted on the light-emitting surface of the display panel 200. As shown in Figures 14 to 24, there is a first adhesive layer 300 between the cover plate 100 and the display panel 200, and the cover plate 100 is pasted on the light-emitting surface of the display panel 200 through the first adhesive layer 300. In addition, in the cover plate 100, the ultra-thin glass 101 is closer to the display panel 200 than the flexible film layer 103. The orthographic projection of the cutting line of the cover plate 100 on the light-emitting surface of the display panel 200 coincides with the orthographic projection of the cutting line of the display panel 200 on the light-emitting surface of the display panel 200. Thus, the cutting surface G1 of the cover plate 100 and the cutting surface of the display panel 200 (not marked in Figures 14 to 24, the cutting surface G1 in Figures 14 to 24 can also be considered as the cutting surface of the display panel 200) are coplanar.

[0139] The first adhesive layer 300 is a transparent optical adhesive layer, and the material of the first adhesive layer 300 is OCA adhesive or OCR adhesive, which is not limited in the embodiment of the present application.

[0140] S1303. Cut the cover plate and the display panel along the cutting line of the cover plate.

[0141] That is, the cover plate and the display panel are cut as a whole along the cutting line of the cover plate. For example, a laser cutting process is used to cut the cover plate and the display panel as a whole. Since the orthographic projection of the cutting line of the cover plate on the light-emitting surface of the display panel coincides with the orthographic projection of the cutting line of the display panel on the light-emitting surface, the cutting line of the cover plate is aligned with the cutting line of the display panel. Therefore, the cover plate and the display panel are cut as a whole along the cutting line of the cover plate, that is, the cover plate and the display panel are cut as a whole along the cutting line of the display panel. Usually, cutting starts from the side where the cover plate is located, so the embodiment of the present application is described as "cutting the cover plate and the display panel as a whole along the cutting line of the cover plate".

[0142] For example, as shown in Figures 14 to 24 , the cover plate 100 and display panel 200 are integrally cut along the cutting line of the cover plate 100 to form a cutting surface G1. The resulting structure after cutting can be the same as that of Figures 14 to 24 , except that the resulting structure after cutting does not include the portion outside the cutting surface G1. The side surface of the resulting structure after cutting is the cutting surface G1 in Figures 14 to 24 . Compared to the structure before cutting, the width of the fault space K and the width of the light shielding layer 105 are both reduced in the resulting structure after cutting, and the width of the peripheral area of ​​the display panel 200 and the width of the cover plate 100 are both reduced. It should be noted that, since in the cover plate 100 before cutting, the width a of the fault space K is smaller than the width b of the light-shielding layer 105, the orthographic projection of the light-shielding layer 105 on the first surface of the ultra-thin glass 101 covers the orthographic projection of the fault space K on the first surface of the ultra-thin glass 101, and the orthographic projection of the light-shielding layer 105 on the first surface of the ultra-thin glass 101 covers the peripheral area of ​​the ultra-thin glass 101, and the amount of reduction in the width a of the fault space K during the cutting process is the same as the amount of reduction in the width b of the light-shielding layer 105. Therefore, in the cover plate 100 after cutting, the width of the fault space K is still smaller than the width of the light-shielding layer 105, and the orthographic projection of the light-shielding layer 105 on the first surface of the ultra-thin glass 101 still covers the peripheral area of ​​the ultra-thin glass 101, so that the outgoing light needs to pass through the ultra-thin glass 101, the transparent optical adhesive layer 102 and the flexible film layer 103, thereby reducing the risk of uneven light emission at the edge of the cover plate.

[0143] In an optional embodiment, the display module further includes a support structure located on a surface opposite to the light-emitting surface of the display panel. After S1303, the support structure is affixed to the surface opposite to the light-emitting surface of the display panel. After affixing the support structure to the surface opposite to the light-emitting surface of the display panel, the display module can be obtained.

[0144] Please refer to Figures 25 to 35, which show schematic diagrams of the support structure 400 after being pasted on the opposite surface of the light-emitting surface of the display panel 200 provided in an embodiment of the present application. Among them, Figure 25 is a schematic diagram after the structure shown in Figure 14 is cut and the support structure 400 is pasted on the opposite surface of the light-emitting surface of the display panel 200. Figure 26 is a schematic diagram after the structure shown in Figure 15 is cut and the support structure 400 is pasted on the opposite surface of the light-emitting surface of the display panel 200. Figure 27 is a schematic diagram after the structure shown in Figure 16 is cut and the support structure 400 is pasted on the opposite surface of the light-emitting surface of the display panel 200. Figure 28 is a schematic diagram after the structure shown in Figure 17 is cut and the support structure 400 is pasted on the opposite surface of the light-emitting surface of the display panel 200. Figure 29 is a schematic diagram after the structure shown in Figure 18 is cut and the support structure 400 is pasted on the opposite surface of the light-emitting surface of the display panel 200. Figure 30 is a schematic diagram of the structure shown in Figure 19 after being cut and after the support structure 400 is pasted on the surface opposite to the light-emitting surface of the display panel 200. Figure 31 is a schematic diagram of the structure shown in Figure 20 after being cut and after the support structure 400 is pasted on the surface opposite to the light-emitting surface of the display panel 200. Figure 32 is a schematic diagram of the structure shown in Figure 21 after being cut and after the support structure 400 is pasted on the surface opposite to the light-emitting surface of the display panel 200. Figure 33 is a schematic diagram of the structure shown in Figure 22 after being cut and after the support structure 400 is pasted on the surface opposite to the light-emitting surface of the display panel 200. Figure 34 is a schematic diagram of the structure shown in Figure 23 after being cut and after the support structure 400 is pasted on the surface opposite to the light-emitting surface of the display panel 200. Figure 35 is a schematic diagram of the structure shown in Figure 24 after being cut and after the support structure 400 is pasted on the surface opposite to the light-emitting surface of the display panel 200.

[0145] It should be noted that, as shown in Figures 25 to 35, for ease of distinction, in the embodiments of the present application, reference numerals marked with "f" represent the structures obtained after cutting. For example, "100f" in Figures 25 to 35 represents the cover plate obtained after cutting the cover plate 100, "200f" in Figures 25 to 35 represents the display panel obtained after cutting the display panel 200, and "300f" in Figures 25 to 35 represents the adhesive layer obtained after cutting the first adhesive layer 300. Furthermore, in the embodiments of the present application, reference numerals marked with "f" are used to represent the various structures in the cover plate 100f. As shown in Figures 25 to 35, the cover plate 100f includes an ultra-thin glass 101f, a transparent optical adhesive layer 102f located on one side of the ultra-thin glass 101f, a flexible film layer 103f located on a side of the transparent optical adhesive layer 102f away from the ultra-thin glass 101f, and a light-shielding layer 105f located in a peripheral area of ​​the flexible film layer 103f. The side surface of the flexible film layer 103f is flush with the side surface of the transparent optical adhesive layer 102f. The side surface of the ultra-thin glass 101f is indented relative to the side surface of the transparent optical adhesive layer 102f, forming a fault space (not marked in Figures 25 to 35) between the side surface of the ultra-thin glass 101f and the surface of the transparent optical adhesive layer 102f near the ultra-thin glass 101f. A protective structure 104f is provided on at least one surface of the ultra-thin glass 101f, at least in the area near the fault space. For a detailed description of the cover plate 100f, please refer to the description of the cover plate 100 and will not be repeated here.

[0146] As shown in Figures 25 to 35 , a second adhesive layer 500 is provided between the support structure 400 and the display panel 200. The support structure 400 is adhered to the surface of the display panel 200 opposite the light-emitting surface via the second adhesive layer 500. The support structure 400 is a flexible support mechanism and can be made of a stainless steel (SUS) plate, a titanium (Ti) alloy plate, an aluminum (Al) alloy plate, or a carbon fiber plate. The second adhesive layer 500 is a transparent optical adhesive layer, and the material of the second adhesive layer 500 is either OCA adhesive or OCR adhesive, which is not limited in this embodiment of the present application.

[0147] It should be noted that Figures 27 to 30 illustrate an example in which the protective structure 104 is not cut during the integrated cutting of the cover plate 100 and display panel 200. In some embodiments, the protective structure 104 may be cut during the integrated cutting of the cover plate 100 and display panel 200 as shown in any of Figures 4 to 7, but this is not limited in this embodiment of the present application.

[0148] Based on the same inventive concept, an embodiment of the present application provides a display module, which includes a display panel and a cover plate. The cover plate is located on the light-emitting surface of the display panel. The cover plate includes ultra-thin glass, a transparent optical adhesive layer located on one side of the ultra-thin glass, and a flexible film layer located on the side of the transparent optical adhesive layer away from the ultra-thin glass. The side surface of the flexible film layer is flush with the side surface of the transparent optical adhesive layer. The side surface of the ultra-thin glass is retracted relative to the side surface of the transparent optical adhesive layer to form a fault space between the side surface of the ultra-thin glass and the surface of the transparent optical adhesive layer close to the ultra-thin glass. At least one surface of the ultra-thin glass has a protective structure at least in the portion close to the fault space. For example, the display module is shown in any one of Figures 25 to 35. In this display module, the cover plate 100f has good integrity and the ultra-thin glass 101f is not broken.

[0149] In an optional embodiment, the display module is manufactured using the method shown in FIG14 .

[0150] Based on the same inventive concept, embodiments of the present application provide a display device comprising the aforementioned display module. The display device may include, but is not limited to, a display screen, electronic paper, a monitor, a mobile phone, a tablet computer, a laptop computer, a television, a digital photo frame, a navigation system, or a wearable device, or any other product or component with a display function. Embodiments of the present application do not limit the type of display device.

[0151] It should be noted that, in this document, terms such as "first", "second", etc. are only used to distinguish one entity or operation from another entity or operation, and do not require or imply any relationship or order between these entities or operations. The terms "comprise", "include" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further limitations, an element defined by the sentence "comprises a..." does not exclude the presence of other identical elements in the process, method, article or device that includes the element.

[0152] Each embodiment in this specification is described in a related manner. The same or similar parts between the embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0153] The above description is only an optional embodiment of the present application and is not intended to limit the scope of protection of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application are included in the scope of protection of the present application.

Claims

1. A cover plate, comprising: An ultra-thin glass, a transparent optical adhesive layer located on one side of the ultra-thin glass, and a flexible film layer located on the side of the transparent optical adhesive layer away from the ultra-thin glass; The side surface of the flexible film layer is flush with the side surface of the transparent optical adhesive layer, and the side surface of the ultra-thin glass is retracted relative to the side surface of the transparent optical adhesive layer to form a fault space between the side surface of the ultra-thin glass and the surface of the transparent optical adhesive layer close to the ultra-thin glass, and at least a part of at least one surface of the ultra-thin glass close to the fault space has a protection structure.

2. The cover plate according to claim 1, wherein The flexible film layer includes a central region and a peripheral region surrounding the central region, and the cover plate further includes a light-shielding layer located in the peripheral region; The width of the fault space is smaller than the width of the light-shielding layer.

3. The cover plate according to claim 2, wherein, The ultra-thin glass includes a first surface close to the transparent optical adhesive layer and a second surface away from the transparent optical adhesive layer; The protection structure satisfies one or more of the following: The protection structure includes a first part that covers the area on the first surface close to the fault space; The protection structure includes a second part that covers the area on the second surface close to the fault space; The protection structure includes a third part that is located in the fault space.

4. The cover plate according to claim 3, wherein, The third part wraps the side surface of the ultra-thin glass.

5. The cover plate according to claim 3 or 4, wherein The protection structure satisfies one or more of the following: The width of the first part is not greater than the width of the light-shielding layer; The thickness of the first part is smaller than the thickness of the transparent optical adhesive layer; The width of the second part is not greater than the width of the light-shielding layer; The thickness of the second part is smaller than the thickness of the transparent optical adhesive layer; The width of the third part is not greater than the width of the fault space; The thickness of the third part is equal to the thickness of the ultra-thin glass.

6. The cover plate according to claim 5, wherein, The protection structure satisfies one or more of the following: The width of the first part is not greater than 500 μm; The thickness of the first part is not greater than 5 μm; The width of the second part is not greater than 500 μm; The thickness of the second part is not greater than 5 μm; The width of the third part is not greater than 50 μm.

7. The cover plate according to claim 1 or 2, wherein The protection structure fills the fault space and covers the surface of the ultra-thin glass away from the transparent optical adhesive layer.

8. The cover plate according to claim 7, wherein The thickness of the protection structure is greater than the thickness of the ultra-thin glass.

9. The cover plate according to claim 7 or 8, wherein, The material of the protection structure is the same as the material of the transparent optical adhesive layer, and the protection structure and the transparent optical adhesive layer are an integral structure.

10. The cover plate according to any one of claims 1 to 9, wherein, The material of the protection structure includes any one of the following: thermal conductive adhesive, polymer or optical transparent resin OCR adhesive.

11. The cover plate according to claim 10, wherein, The thermal conductive adhesive includes resin and filler, and the filler is a material with thermal conductivity and insulation.

12. The cover plate according to claim 11, wherein, The filler includes a combination of one or more of the following: aluminum nitride, boron nitride, silicon nitride, aluminum oxide, magnesium oxide or zinc oxide.

13. The cover plate according to claim 10, wherein, The polymer includes a combination of one or more of the following: polyimide, polyethylene terephthalate, thermoplastic polyurethane, polymethyl methacrylate or polyurethane.

14. The cover plate according to any one of claims 1 to 13, wherein, The material of the transparent optical adhesive layer includes OCA adhesive or OCR adhesive.

15. The cover plate according to any one of claims 1 to 14, wherein, The thickness of the flexible film layer ranges from 20 μm to 200 μm; The thickness of the transparent optical adhesive layer ranges from 10 μm to 100 μm; The thickness of the ultra-thin glass ranges from 10 μm to 100 μm.

16. The cover plate according to any one of claims 1 to 15, wherein, The cut surface of the cover plate is located between the side surface of the ultra-thin glass and the side surface of the transparent optical adhesive layer.

17. A manufacturing method of a display module, the method comprising: Providing a display panel and a cover plate, the cover plate comprising ultra-thin glass, a transparent optical adhesive layer located on one side of the ultra-thin glass, and a flexible film layer located on the side of the transparent optical adhesive layer away from the ultra-thin glass, the side surface of the flexible film layer being flush with the side surface of the transparent optical adhesive layer, the side surface of the ultra-thin glass being recessed relative to the side surface of the transparent optical adhesive layer to form a fault space between the side surface of the ultra-thin glass and the surface of the transparent optical adhesive layer close to the ultra-thin glass, and at least one surface of the ultra-thin glass having a protection structure at least in a portion close to the fault space; Pasting the cover plate on the light-emitting surface of the display panel so that the projection of the cutting line of the cover plate on the light-emitting surface coincides with the projection of the cutting line of the display panel on the light-emitting surface; Cutting the cover plate and the display panel along the cutting line of the cover plate.

18. The method according to claim 17, wherein, After cutting the cover plate and the display panel along the cutting line of the cover plate, the method further comprises: Pasting a support structure on the opposite surface of the light-emitting surface of the display panel.

19. A display module, comprising a display panel and a cover plate, the cover plate being located on the light-emitting surface of the display panel, the cover plate comprising ultra-thin glass, a transparent optical adhesive layer located on one side of the ultra-thin glass, and a flexible film layer located on the side of the transparent optical adhesive layer away from the ultra-thin glass, the side surface of the flexible film layer being flush with the side surface of the transparent optical adhesive layer, the side surface of the ultra-thin glass being recessed relative to the side surface of the transparent optical adhesive layer to form a fault space between the side surface of the ultra-thin glass and the surface of the transparent optical adhesive layer close to the ultra-thin glass, and at least one surface of the ultra-thin glass having a protection structure at least in a portion close to the fault space.

20. A display device, comprising the display module according to claim 19.

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