Glass cover plate, display module and manufacturing method of glass cover plate

Abstract

This disclosure relates to a glass cover plate, including a light-emitting surface and a side surface adjacent to the light-emitting surface. A first region on the side surface is provided with an anti-reflective structure, which includes a microcrystalline glass structure. By providing an anti-reflective structure in the first region of the side surface, abnormal reflections on the side of the glass cover plate are reduced. Furthermore, the anti-reflective structure, being a microcrystalline glass structure, effectively improves the edge strength of the cover plate and enhances the overall mechanical reliability. This disclosure also relates to a method for manufacturing a display module and a glass cover plate.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of display product manufacturing, and in particular to a glass cover plate, a display module, and a manufacturing method of a glass cover plate. BACKGROUND

[0002] Currently, terminal intelligent products using display modules have been widely popularized, and consumers have increasingly stringent requirements for various performances of the display modules. For example, the appearance is increasingly pursued to be exquisite, and the mechanical reliability is increasingly pursued to be strict. This puts forward higher requirements on the appearance and performance of the display module and its contained components. For wearable products with more severe use conditions, the above requirements are even more urgent.

[0003] For the appearance of the whole machine product, improving the screen-to-body ratio is undoubtedly one of the most discussed topics, and reducing the border can effectively improve the screen-to-body ratio. Due to the harshness of the use environment, wearable products use flange bosses to improve the overall mechanical reliability. In the narrow border design, the boss edge distance from the display area needs to be reduced. In actual samples, it is found that the boss side wall distance will have abnormal reflection, resulting in poor user experience. With the design of the narrow border being more and more extreme, this phenomenon may also occur in 2D cover plates. In addition, the edge of the wearable glass cover plate is its weak point, and its mechanical reliability is continuously improved. SUMMARY

[0004] To solve the above technical problems, the present disclosure provides a glass cover plate, a display module, and a manufacturing method of a glass cover plate, which solves the problem of abnormal reflection on the side surface of the glass cover plate.

[0005] To achieve the above purpose, the technical solution adopted by the embodiments of the present disclosure is: a glass cover plate, comprising a light exit surface and a side surface adjacent to the light exit surface, a first region on the side surface is provided with an anti-reflection structure, and the anti-reflection structure comprises a microcrystalline glass structure.

[0006] Optionally, the microcrystalline glass structure is formed by doping rare earth elements on the side surface to form rare earth silicate grains.

[0007] Optionally, the surface of the first region is a frosted surface.

[0008] Optionally, the frosted surface is formed by the rare earth silicate grains extending to the surface outside the first region.

[0009] Optionally, the glass cover plate comprises a light-transmitting region and a light-blocking region located at the periphery of the light-transmitting region, and a length S of the first region in a first direction is obtained by the following formula: S≥T-B*tanA, wherein T is a thickness of the glass cover plate in the first direction, B is a distance from the light-transmitting region to a boundary of the glass cover plate in a second direction, A is an angle between a visible reflected light ray reflected by the first region and the light-out surface, the first direction is a direction perpendicular to the light-out surface, and the second direction is a direction parallel to the light-out surface.

[0010] Optionally, the angle A between the visible reflected light ray reflected by the first region and the light-out surface is greater than or equal to 30 degrees.

[0011] Optionally, the glass cover plate comprises a light-in surface opposite to the light-out surface, and the light-in surface comprises a second region located at the light-blocking region, and the second region is provided with an ink layer.

[0012] Optionally, a cross section of the glass cover plate in a direction perpendicular to the light-out surface is rectangular; or,

[0013] the cross section of the glass cover plate in the direction perpendicular to the light-out surface is a convex structure, the glass cover plate comprises a first part and a second part stacked in a direction perpendicular to the light-out surface, an area of the first part is smaller than an area of the second part in a direction parallel to the light-out surface, and the side surface is located at the first part.

[0014] The embodiments of the present disclosure further provide a display module, comprising a display panel and the glass cover plate described above, and the glass cover plate is located at a light-out side of the display panel.

[0015] The embodiments of the present disclosure further provide a manufacturing method of a glass cover plate, used for manufacturing the glass cover plate described above, comprising the following steps:

[0016] providing a glass substrate;

[0017] spraying a rare earth oxide on a first region of a side surface of the glass substrate to form a rare earth oxide layer;

[0018] performing a heating treatment on the rare earth oxide layer to diffuse a rare earth element on the glass substrate and precipitate silicate grains.

[0019] Optionally, the method further comprises:

[0020] performing a cooling treatment on the silicate grains to grow the silicate grains and extend the silicate grains to outside of a surface of the first region, so that the surface of the first region forms a frosted surface.

[0021] The beneficial effects of this disclosure are: by setting an anti-reflective structure in the first area on the side, abnormal reflections on the side of the glass cover are reduced, and the anti-reflective structure is a microcrystalline glass structure, which can effectively improve the edge strength of the cover and improve the mechanical reliability of the whole machine. Attached Figure Description

[0022] Figure 1 A schematic diagram showing that the side of the flange boss cover plate in the relevant technology is mirror-like;

[0023] Figure 2 A schematic diagram illustrating that the side of a 2D cover plate in the related technology is mirror-like;

[0024] Figure 3 A schematic diagram showing the flange boss cover plate in an embodiment of this disclosure;

[0025] Figure 4 A schematic diagram showing a 2D cover plate in an embodiment of this disclosure;

[0026] Figure 5 A schematic diagram illustrating diffuse reflection of light on the microcrystalline glass structure in the flange boss cover plate of this disclosure embodiment;

[0027] Figure 6 A schematic diagram illustrating diffuse reflection of light on the microcrystalline glass structure in a 2D cover plate according to an embodiment of the present disclosure;

[0028] Figure 7 This is a schematic diagram illustrating the application of rare earth oxides to the side of the flange boss cover plate in an embodiment of this disclosure.

[0029] Figure 8 This is a schematic diagram illustrating the application of rare earth oxides to the side of a 2D cover plate in an embodiment of this disclosure.

[0030] Figure 9 A schematic diagram showing the area of ​​the visible region where abnormal light is reflected from the side of the flange boss cover plate in an embodiment of this disclosure;

[0031] Figure 10 A schematic diagram showing the area of ​​the visible region where abnormal light is reflected from the side of the cover plate in Embodiment 2D of this disclosure;

[0032] Figure 11 A schematic diagram showing the area range of the first region in the flange boss cover plate of this disclosure embodiment;

[0033] Figure 12 This diagram illustrates the area of ​​the first region in the cover plate of embodiment 2D of this disclosure.

[0034] Figure 13 A schematic diagram showing that the flange boss cover plate is circular;

[0035] Figure 14 A schematic diagram showing that the flange boss cover plate is square;

[0036] Figure 15 A schematic diagram showing that the 2D cover plate is circular;

[0037] Figure 16 A schematic diagram showing that the 2D cover plate is square;

[0038] Figure 17 This diagram illustrates the calculation principle of the distance between the extreme reflective point of the light-emitting surface of the flange boss cover plate, which is far from the glass cover plate, and the back surface of the glass cover plate, according to an embodiment of this disclosure. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0040] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an,” “a,” or “the,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “including,” “comprising,” or “containing,” and similar terms mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. The terms “connected,” “linked,” or similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” and “right,” etc., are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0041] The features such as "parallel," "perpendicular," and "identical" used in the embodiments of this disclosure include features in the strict sense of "parallel," "perpendicular," and "identical," as well as cases where "approximately parallel," "approximately perpendicular," and "approximately identical" include certain tolerances. Taking into account the measurement and the tolerances associated with the measurement of a specific quantity (e.g., limitations of the measurement system), they represent the acceptable deviation range for a specific value as determined by a person skilled in the art. For example, "approximately" can mean within one or more standard deviations, or within 3% or 5% of said value.

[0042] Figure 1 The optical path diagram of the flange boss cover plate in the relevant technology is shown. Figure 2 The diagram illustrates the optical path of a 2D cover plate in the relevant technology. The vertical sidewalls of both cover plates achieve a mirror-like finish through edge polishing. Normal light from the AA area of ​​the display panel (light ray 100 indicated by the dark blue arrow) is emitted in all directions. Some of this light illuminates the vertical sidewall of the cover plate 10, where it undergoes specular reflection, producing abnormal reflected light (light ray 200 indicated by the light blue arrow). The virtual image formed by this abnormal reflected light interferes with the normal display of the wearable smart terminal.

[0043] refer to Figures 3-6 To address the aforementioned issues, this embodiment provides a glass cover plate, including a light-emitting surface 1001 and a side surface 1002 adjacent to the light-emitting surface 1001. A first region on the side surface 1002 is provided with an anti-reflection structure, which includes a microcrystalline glass structure 1.

[0044] Microcrystalline glass refers to a base glass with a specific composition, either with or without a nucleating agent, which undergoes crystallization heat treatment at a certain temperature regime. This process causes a large number of tiny crystals to precipitate uniformly within the glass, forming a dense multiphase composite of microcrystalline and glass phases. As a special type of glass, microcrystalline glass outperforms ordinary glass in terms of material strength and scratch resistance. This embodiment utilizes these properties of microcrystalline glass to form a microcrystalline glass structure 1 on the side 1002 of the glass cover plate, creating an anti-reflective structure. The microcrystalline glass structure 1 can be formed both inside and on the surface (the surface of the first region) of the glass cover plate, improving the reflection phenomenon on the side 1002 of the glass cover plate and effectively enhancing the edge strength of the cover plate, thereby improving the overall mechanical reliability of the machine.

[0045] Figure 5 A schematic diagram showing a display module using a flange boss cover plate. Figure 6This is a schematic diagram illustrating a display module using a 2D cover plate. The display module includes a display panel, a glass cover plate 10 located on the light-emitting side of the display panel, and a frame 20 surrounding the display panel and the glass cover plate. In the light emitted from the AA area of ​​the display panel, normal light rays exit from the light-transmitting area of ​​the light-emitting surface 1001, while abnormal light rays are incident on the side surface 1002. After passing through the microcrystalline glass structure 1, diffuse reflection and transmission occur, relative to... Figure 1 and Figure 2 In this embodiment, the microcrystalline glass structure 1 is provided on the side 1002 to improve the problem of side reflection.

[0046] In an exemplary embodiment, the microcrystalline glass structure is formed by doping the side surface with rare earth elements to form rare earth silicate grains.

[0047] The raw material for glass covers is aluminosilicate glass. By doping with rare earth elements (such as Y, Sc, Dy, Er, and Gd), rare earth silicate grains can be formed, resulting in a microcrystalline glass structure. Rare earth elements diffuse and nucleate within the glass at suitable temperatures (rare earth silicates), and then these nuclei grow into grains. These grains are distributed both inside and on the surface of the glassy composition; that is, rare earth silicate grains are distributed throughout the interior and surface of the glass cover.

[0048] In an exemplary embodiment, the surface of the first region is a frosted surface.

[0049] In an exemplary embodiment, the frosted surface is formed by the rare earth silicate grains extending beyond the surface of the first region.

[0050] During growth, rare-earth silicate grains located on the surface of the first region extend beyond the surface, forming a grain-frosted surface. This grain-frosted surface effectively reduces the microscopic flatness of the glass cover surface, preventing it from becoming a mirror-like state. This causes abnormally reflected light to undergo diffuse reflection and transmission, improving the reflection problem on the sides of the glass cover.

[0051] In an exemplary embodiment, the glass cover includes a light-transmitting area and a light-shielding area located around the light-transmitting area. The length S of the first area in a first direction is obtained by the following formula: S≥TB*tanA, where T is the thickness of the glass cover in the first direction, B is the distance from the light-transmitting area to the boundary of the glass cover in the second direction, and A is the angle between the visible reflected light rays reflected in the first area and the light-emitting surface. The first direction is perpendicular to the light-emitting surface, and the second direction is parallel to the light-emitting surface.

[0052] In an exemplary embodiment, the angle A between the visible reflected light rays reflected from the first region and the light-emitting surface is greater than or equal to 30 degrees, but is not limited thereto.

[0053] Taking an example where the angle A between the visible reflected light rays reflected from the first region and the light-emitting surface is 30 degrees, the setting of the length of the first region in the first direction will be explained.

[0054] refer to Figures 9-12 The glass cover plate includes a first part 101 and a second part 102 stacked together. The cross-sections of the first part 101 and the second part 102 are convex. The overall thickness T of the glass cover plate is 1.2–2.5 mm, and the thickness of the second part is 0.3–0.5 mm. The glass cover plate includes a light-transmitting area and a light-shielding area located around the light-transmitting area. The light-transmitting area corresponds to the display area (AA area) of the display module. In the first direction, the distance B (i.e., the length EF) from the display area AA of the glass cover plate to the boundary of the first part is 0.1–0.5 mm. In the first direction, the abnormal light 1011, whose reflection position is closest to the light-emitting surface of the cover plate, is emitted from inside the AA area and reflected at the uppermost end of the side surface 1002. This reflection position always has abnormal light under different frame designs. The reflection position of the abnormal light ray 1012 of the light-emitting surface 1001 furthest from the cover plate is located in the lower rounded chamfer area (the connection between the first part 101 and the second part 102). According to the fact that the angle A between the visible reflected light ray reflected in the first area and the light-emitting surface is greater than or equal to 30 degrees, and the formula F = TB * tanA, the length F of the visible area of ​​the abnormal light ray in the first direction is 0.4 to 1.9 mm. Therefore, the length S of the first area in the first direction is greater than or equal to the length F of the visible area of ​​the abnormal light ray in the first direction. For example, S is 0.4 to 1.9 mm.

[0055] It should be noted that, as described above, the length F of the visible area of ​​the abnormal light ray in the first direction is obtained according to the formula F = TB * tanA. This calculation ignores the rounded corners formed by the rounding treatment at the connection between the first part 101 and the second part 102, and calculates the reflection position of the abnormal light ray 1012, which is furthest from the cover plate's light-emitting surface 1001, located on the vertical sidewall of the first part 101. To obtain a more accurate value, the rounded corners at the connection between the first part 101 and the second part 102 are taken into account, and the reflection position of the abnormal light ray 1012, which is furthest from the cover plate's light-emitting surface 1001, is located at the rounded corner. Specifically, refer to... Figure 17The calculation process of the distance h between the reflection point A of the abnormal ray 1012 (i.e., the extreme reflection ray whose reflection point is far from the light-emitting surface of the glass cover plate) and the back surface of the glass cover plate is specifically explained, with the angle A between the visible reflected ray reflected in the first region and the light-emitting surface being 30 degrees.

[0056] The overall thickness T of the glass cover is 1.2-2.5 mm, the thickness t of the second part is 0.3-0.5 mm, the radius r of the rounded corner at the connection between the first part 101 and the second part 102 is 0.4 mm, the angle between the limiting reflection normal 2000 and the horizontal line is α, the angle between the incident ray and the vertical line (i.e., the angle between the ray emitted from area AA and incident on point A and the direction of the side of the first part 101) ∠DAE is β, the vertical distance AC between the limiting reflection point A (i.e. the reflection point that produces the limiting anomalous ray 1012) and the side of the first part is b, the distance between the limiting reflection point A and the back of the cover (the side opposite to the light-emitting surface) is h (i.e., the length of AD is h), and the vertical distance between the boundary of the AA display area and the side of the first part (i.e., the length of FE) is B (0.1-0.5 mm).

[0057] refer to Figure 17 OB = OG = r, and OB and OG are perpendicular;

[0058] According to geometric principles, ∠CAD=α+(α+30°)+β=90°(1); In triangle DEA, (DF+FE) / AD=(B+b) / h=tanβ(2);

[0059] In triangle ABC, AC 2 +BC 2 =AB 2 (3);

[0060] The length of the chord AB corresponding to the central angle ∠BOC can be obtained from the formula for the length of a circle's chord:

[0061] AB = 2rsin(α / 2) (4);

[0062] In triangle AGH, GH 2 +AH 2 =AG 2 (5), where AH = AD - HD = ht, GH = OB = r;

[0063] From the formula for the length of a chord of a circle, the length of the chord AG corresponding to the central angle ∠AOG is: 2rsin[(90-α) / 2](6);

[0064] According to formulas (1)-(6), by solving, the distance h between the limit reflection point A and the back surface of the glass cover plate can be obtained: 0.6 < h < 0.8. Combining with the overall thickness T (1.2 - 2.5 mm) of the glass cover plate, the length F of the visible area of the extraordinary light in the first direction can be obtained as T - h, which is 0.4 - 1.9 mm. Combining Figure 9 、 Figure 11 和 Figure 17 , according to the length F of the visible area of the extraordinary light in the first direction, the length S of the first region in the first direction can be obtained. Exemplarily, S = F, which is 0.4 - 1.9 mm.

[0065] Exemplarily, the first region can completely cover the side surface 1002.

[0066] Reference Figure 4 、 Figure 10 和 Figure 12 , the thickness T value of the 2D cover plate is 0.4 - 0.8 mm. In the second direction, the value of B from the display area to the cover plate boundary (i.e., the distance from the light-transmitting area to the boundary of the cover plate) is 0.5 - 1.5 mm. In the first direction, the extraordinary light 1021 whose reflection position is closest to the light-emitting surface 1001 of the cover plate is emitted from the inside of the AA area and is reflected at the uppermost end of the side surface 1002. This reflection position always has extraordinary light under different frame designs. The extraordinary light 1022 whose reflection position is farthest from the light-emitting surface 1001 of the cover plate is emitted from the boundary of the ink layer Ink. According to the angle A between the extraordinary light and the display plane (i.e., the light-emitting surface of the glass cover plate) being ≥ 30°, it can be deduced that the distance F from this reflection position to the light-emitting surface of the glass cover plate is T - B × tan30°, that is, the visual reflection range (i.e., the length of the visible area of the extraordinary light in the first direction) F is 0 - 0.5 mm. The length S of the first region in the first direction is greater than or equal to the length F of the visible area of the extraordinary light in the first direction. Exemplarily, S is 0 - 0.8 mm, where the maximum range is that the entire side surface is doped.

[0067] It should be noted that the minimum grain micro-sand range (i.e., the range where the microcrystalline glass structure is set) of the flange boss cover plate and the 2D cover plate needs to be determined according to specific frame, chamfer and thickness designs.

[0068] In an exemplary embodiment, the glass cover plate includes a light-incident surface opposite to the light-emitting surface, and the light-incident surface includes a second region located in the light-shielding region, and an ink layer Ink is provided in the second region.

[0069] In an exemplary embodiment, the cross-section of the glass cover plate in the direction perpendicular to the light-emitting surface is rectangular, that is, the glass cover plate is a 2D cover plate; or,

[0070] The glass cover plate has a convex-shaped cross-section in the direction perpendicular to the light-emitting surface, that is, the glass cover plate is a flange boss cover plate. In the direction perpendicular to the light-emitting surface, the glass cover plate includes a first part 101 and a second part 102 stacked together. In the direction parallel to the light-emitting surface, the area of ​​the first part 101 is smaller than the area of ​​the second part 102. The side surface 1002 is located in the first part 101.

[0071] In an exemplary embodiment, the cross-section of the glass cover plate in the direction parallel to the light-emitting surface 1001 is circular, such as... Figure 13 and Figure 15 Or, the cross-section of the glass cover plate in the direction parallel to the light-emitting surface 1001 is square, such as... Figure 14 and Figure 16 However, this is not the limit.

[0072] This disclosure also provides a display module, including a display panel and the aforementioned glass cover, wherein the glass cover is located on the light-emitting side of the display panel.

[0073] This disclosure also provides a method for manufacturing a glass cover plate, which includes the following steps:

[0074] Provide glass substrates;

[0075] Rare earth oxides are sprayed onto a first region on the side of the glass substrate to form a rare earth oxide layer; specifically, a mask is used to cover the portion of the surface that does not require a frosted finish, and a rare earth oxide slurry with a particle size of 1–5 μm is sprayed onto the surface of the cover plate, with a spray thickness of 100–150 μm; Reference Figure 8 and Figure 9 .

[0076] The rare earth oxide layer is heat-treated to allow rare earth elements to diffuse onto the glass substrate and precipitate silicate grains. Specifically, the temperature is increased at a rate of 10°C / min to 650–750°C and held for 1–3 hours. This prolonged high-temperature holding allows the rare earth oxides on the surface to fully penetrate the cover plate; the actual effective depth of the rare earth oxides is approximately 300 μm, but this is not a limitation.

[0077] In an exemplary embodiment, the method for manufacturing the glass cover further includes:

[0078] The silicate grains are cooled to allow them to grow and extend beyond the surface of the first region, thereby forming a frosted surface on the surface of the first region.

[0079] The glass was cooled at a rate of 5°C / min. The resulting frosted surface was formed during the cooling phase following the high-temperature treatment. With sufficient penetration of rare earth elements, as the temperature gradually decreased, the rare earth elements combined with the silicates in the glass to form rare earth silicate nuclei. These nuclei then grew to form grains with sizes ranging from 0.02 to 50 μm, distributed on the surface of the first region and at a certain depth therein. Compared to the glassy composition, the grains exhibit a more ordered atomic arrangement and higher mechanical strength. Furthermore, the grain distribution within the glassy matrix represents a particle-reinforced structure, significantly enhancing the mechanical strength of the cover plate edges.

[0080] It should be noted that the cooling process specifically includes:

[0081] Cool down at a rate of 5℃ / min to 500-550℃;

[0082] Increase the cooling rate to 5-10℃ / min to cool down until the temperature is reduced to room temperature.

[0083] It should be noted that the cooling process employs a phased cooling method, with different cooling rates used in different stages. This is because a slower cooling rate is required during the nucleation and growth phases of the crystal to allow sufficient time for nucleation and growth. Once the temperature drops below the nucleation and growth temperature range, nucleation and growth hardly occur in the glass, and the cooling rate can be appropriately increased to improve production efficiency.

[0084] The reflectivity of the sidewalls (i.e., the sides) in a typical cover design is eliminated, resulting in an aesthetically pleasing, narrow-bezel wearable smart terminal without any intrusive or abnormal patterns. Furthermore, mechanical reliability results show that, compared to the original cover with smooth sidewall glass (i.e., a glass cover with a mirror-like surface on the sides), the glass cover in this embodiment features a microcrystalline glass structure in the first region, and the surface of the first region is frosted, significantly improving the sandpaper drop strength by more than 0.8m.

[0085] The display device can be any product or component with display function, such as an LCD TV, LCD monitor, digital photo frame, mobile phone, or tablet computer. The display device also includes a flexible circuit board, a printed circuit board, and a backplate.

[0086] The following points need to be explained:

[0087] (1) The accompanying drawings of the embodiments of this disclosure only involve the structures involved in the embodiments of this disclosure. Other structures can be referred to the general design.

[0088] (2) For clarity, the thickness of layers or regions is enlarged or reduced in the drawings used to describe embodiments of the present disclosure, i.e., these drawings are not drawn to actual scale. It will be understood that when an element such as a layer, film, region or substrate is referred to as being “above” or “below” another element, the element may be “directly” located “above” or “below” the other element or there may be intermediate elements.

[0089] (3) Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0090] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of this disclosure, and this disclosure is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and substance of this disclosure, and these modifications and improvements are also considered to be within the scope of protection of this disclosure.

Claims

1. A glass cover plate, characterized in that, It includes a light-emitting surface and a side surface adjacent to the light-emitting surface, wherein a first region on the side surface is provided with an anti-reflection structure, and the anti-reflection structure includes a microcrystalline glass structure; The glass cover includes a light-transmitting area and a light-blocking area located around the light-transmitting area. The length S of the first area in a first direction is obtained by the following formula: S≥TB*tanA, where T is the thickness of the glass cover in the first direction, B is the distance from the light-transmitting area to the boundary of the glass cover in the second direction, and A is the angle between the visible reflected light rays reflected in the first area and the light-emitting surface. The first direction is perpendicular to the light-emitting surface, and the second direction is parallel to the light-emitting surface.

2. The glass cover plate according to claim 1, characterized in that, The microcrystalline glass structure is formed by doping rare earth elements on the side surface to form rare earth silicate grains.

3. The glass cover plate according to claim 2, characterized in that, The surface of the first region is frosted.

4. The glass cover plate according to claim 3, characterized in that, The frosted surface is formed by the rare earth silicate grains extending to the outer surface of the first region.

5. The glass cover plate according to claim 1, characterized in that, The angle A between the visible reflected light rays reflected from the first region and the light-emitting surface is greater than or equal to 30 degrees.

6. The glass cover plate according to claim 1, characterized in that, The glass cover includes a light-incident surface disposed opposite to the light-emitting surface, and the light-incident surface includes a second region located in the light-shielding area, the second region being provided with an ink layer.

7. The glass cover plate according to claim 1, characterized in that, The glass cover plate has a rectangular cross-section in the direction perpendicular to the light-emitting surface; or... The glass cover plate has a convex shape in the cross section perpendicular to the light-emitting surface. In the direction perpendicular to the light-emitting surface, the glass cover plate includes a first part and a second part stacked together. In the direction parallel to the light-emitting surface, the area of ​​the first part is smaller than the area of ​​the second part, and the side is located in the first part.

8. A display module, characterized in that, It includes a display panel and a glass cover plate as described in any one of claims 1-7, wherein the glass cover plate is located on the light-emitting side of the display panel.

9. A method for manufacturing a glass cover plate, characterized in that, The method for manufacturing a glass cover plate according to any one of claims 1-7 comprises the following steps: Provide glass substrates; Rare earth oxides are sprayed onto a first region on the side of the glass substrate to form a rare earth oxide layer. The rare earth oxide layer is subjected to heat treatment to allow rare earth elements to diffuse onto the glass substrate and precipitate silicate grains.

10. The method for manufacturing a glass cover plate according to claim 9, characterized in that, Also includes: The silicate grains are cooled to allow them to grow and extend beyond the surface of the first region, thereby forming a frosted surface on the surface of the first region.

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