Glass shell, preparation method thereof and electronic equipment

Abstract

The invention provides a glass shell, a preparation method thereof and electronic equipment, and the preparation method of the glass shell comprises the following steps: carrying out an etching process on a glass substrate to form a plurality of first concave parts on the surface of the glass substrate to obtain etched glass; carrying out a die-casting process on the etched glass to form a plurality of second concave parts on the surface, with the first concave parts, of the etched glass so as to obtain a glass shell; and part of the first concave part is arranged on the peripheral wall of the second concave part.

Description

Technical Field

[0001] The present application belongs to the technical field of electronic equipment, and in particular, relates to a glass housing and a preparation method thereof and electronic equipment. Background Art

[0002] In the related art, etching textures can be produced by etching glass, thereby changing the appearance of the glass, which is beneficial for its use in electronic devices. However, the etching texture has a small variability, which makes the etching effect relatively simple, resulting in a small change in the appearance of the glass, and causing serious homogeneity in the appearance of electronic devices. Summary of the invention

[0003] In view of this, the present application provides a glass housing, a method for preparing the same, and an electronic device.

[0004] In a first aspect, the present application provides a method for preparing a glass casing, comprising:

[0005] Performing an etching process on a glass substrate to form a plurality of first recessed portions on a surface of the glass substrate to obtain etched glass;

[0006] The etched glass is subjected to a die-casting process to form a plurality of second recessed portions on the surface of the etched glass having the first recessed portion, thereby obtaining a glass shell; wherein part of the first recessed portion is arranged on the peripheral wall of the second recessed portion.

[0007] In a second aspect, the present application provides a glass shell, comprising a glass substrate, a plurality of first recessed portions and a plurality of second recessed portions, the glass substrate comprising a first surface, the second recessed portions being arranged on the first surface, a portion of the first recessed portions being arranged on the first surface, and a portion of the first recessed portions being arranged on the peripheral walls of the second recessed portions.

[0008] In a third aspect, the present application provides an electronic device, comprising a glass shell manufactured by the preparation method described in the first aspect or a glass shell described in the second aspect.

[0009] The present application obtains a glass shell having a first recessed portion and a second recessed portion through an etching process and a die-casting process, wherein the first recessed portion produced by the etching process is overall delicate, so that the glass shell has a microscopic texture visual effect, and the second recessed portions produced by the die-casting process are dispersed between the first recessed portions, so that the glass shell can have a macroscopic texture visual effect and a texture tactile feel, and the first recessed portion and the second recessed portion enhance the layering and three-dimensional sense of the texture effect of the glass shell, enrich the appearance of the glass shell, and facilitate its use in electronic devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the implementation modes of the present application, the drawings required for use in the implementation modes of the present application will be described below.

[0011] Figure 1 This is a flow chart of a method for preparing a glass shell according to one embodiment of the present application.

[0012] Figure 2 A schematic cross-sectional view of an etched glass provided in accordance with an embodiment of the present application.

[0013] Figure 3 A schematic cross-sectional view of a glass housing provided in accordance with an embodiment of the present application.

[0014] Figure 4 This is a flow chart of a method for preparing a glass shell according to another embodiment of the present application.

[0015] Figure 5 This is a flow chart of a method for preparing a glass shell provided in yet another embodiment of the present application.

[0016] Figure 6 This is a flow chart of a method for preparing a glass shell provided in yet another embodiment of the present application.

[0017] Figure 7 This is a schematic diagram of the appearance of a glass shell provided in one embodiment of the present application.

[0018] Figure 8 A schematic diagram of the structure of an electronic device provided in one embodiment of the present application.

[0019] Description of labels:

[0020] Glass substrate-11, first surface-111, first recessed portion-12, second recessed portion-13, peripheral wall-131, glass housing-100, etched glass-110, electronic device-200. DETAILED DESCRIPTION

[0021] The following are exemplary embodiments of the present application. It should be noted that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications are also considered to be within the scope of protection of the present application.

[0022] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the various specific processes and material examples provided by the present application, but those of ordinary skill in the art can appreciate the application of other processes and / or the use of other materials.

[0023] See also Figure 1 , is a flow chart of a method for preparing a glass shell provided in one embodiment of the present application, comprising:

[0024] S101: performing an etching process on a glass substrate to form a plurality of first recessed portions on a surface of the glass substrate to obtain etched glass.

[0025] S102: performing a die-casting process on the etched glass to form a plurality of second recessed portions on the surface of the etched glass having the first recessed portion, thereby obtaining a glass shell; wherein part of the first recessed portion is disposed on the peripheral wall of the second recessed portion.

[0026] The present application uses etching process and die-casting process to make the glass shell 100 have both an etched first recessed portion 12 and a die-cast second recessed portion 13. The first recessed portion 12 produced by the etching process is a relatively fine texture, which makes the glass shell 100 have a fine sand effect; the second recessed portion 13 produced by the die-casting process, part of the first recessed portion 12 will be arranged on the peripheral wall 131 of the second recessed portion 13, so the second recessed portion 13 is a large-sized texture, which can make the glass shell 100 have a macroscopic texture pattern effect, and the layering and three-dimensional sense are enhanced. The combination of the first recessed portion 12 and the second recessed portion 13 makes the glass shell 100 have a two-layer texture effect at the microscopic and macroscopic levels. The glass shell 100 has both a large-surface fine sand effect and a texture pattern visual appearance, and also has a texture touch, which greatly enriches the appearance of the glass shell 100, avoids homogenization, and is conducive to improving the product competitiveness of the glass shell 100. The product surface texture obtained by only etching is small, the three-dimensional sense, layering and touch are weak, and the homogenization phenomenon is serious; in the present application, not only etching but also die-casting is performed, so that the second recessed parts 13 with stronger three-dimensional sense are provided between the dispersed first recessed parts 12 on the glass shell 100, and the two textures are fused, so that the glass shell 100 has obvious three-dimensional texture in the macro sense and has a delicate fine sand effect in the micro sense, achieving a richer appearance.

[0027] In S101 , an etching process is performed on a glass substrate to obtain an etched glass 110 having a plurality of first recessed portions 12 .

[0028] In the present application, an etching liquid can be used to perform an etching process on the glass substrate. The etching liquid can be selected according to the material of the glass substrate, and can also be selected according to the etching effect. The glass substrate can be, but is not limited to, aluminosilicate glass, borosilicate glass, etc., which is beneficial to improving the mechanical properties and service life of the glass shell 100. In one embodiment of the present application, the glass substrate can be high-aluminosilicate glass. The mass content of aluminum oxide in high-aluminum glass is greater than 12%. The etching liquid can include low-flash etching liquid, snowflake etching liquid, flash sand etching liquid, etc., which can be selected according to the desired appearance effect. The texture effect produced by etching with the etching liquid is relatively fine, and it appears as a fine sand effect on a macro scale, without a sense of touch. In one embodiment of the present application, the etching solution includes 27 to 33 parts of ammonium bifluoride, 10 to 15 parts of fluorosilicate, 2 to 3 parts of viscosity modifier, 18 to 22 parts of hydrochloric acid, 3 to 7 parts of nitric acid, 3 to 7 parts of nitrate, and 23 to 27 parts of water, wherein the concentration of hydrochloric acid is 30wt% to 36wt%, and the concentration of nitric acid is greater than or equal to 95wt%. The etching solution can be used to obtain a pine needle-shaped first recessed portion 12, thereby improving the appearance of the etched glass 110. In one embodiment of the present application, the etching solution includes 8wt% to 15wt% of ammonium fluoride, 15wt% to 25wt% of ammonium bifluoride, 5wt% to 8wt% of potassium bifluoride, 5wt% to 10wt% of phosphoric acid, 10wt% to 20wt% of nitric acid, 0.5wt% to 3wt% of sodium sulfate, 2wt% to 6wt% of copper sulfate, 3wt% to 8wt% of sodium nitrate, 0.5wt% to 2wt% of sodium dihydrogen phosphate, 0.8wt% to 3wt% of ammonium chloride, 8wt% to 15wt% of starch, 5wt% to 10wt% of glycerol and 8wt% to 15wt% of water. The etching solution can be used to obtain a snowflake-shaped first recessed portion 12, thereby improving the appearance of the etched glass 110. In one embodiment of the present application, the etching solution includes 27 to 33 parts of ammonium bifluoride, 10 to 15 parts of fluorosilicate, 2 to 3 parts of viscosity modifier, 18 to 22 parts of hydrochloric acid, 8 to 12 parts of concentrated sulfuric acid, and 23 to 27 parts of water, wherein the concentration of hydrochloric acid is 30 wt % to 36 wt %, and the concentration of concentrated sulfuric acid is greater than or equal to 95 wt %. The etching solution can be used to obtain a first concave portion 12 in a polygonal pyramid shape, so that the etched glass 110 has a fine flash effect and presents a flash sand appearance. In one embodiment of the present application, the etching solution includes a first component and a second component. The first component includes 60 to 70 parts of ammonium bifluoride, 25 to 30 parts of ammonium fluorosilicate, 2 to 5 parts of sodium fluorosilicate, 2 to 5 parts of calcium fluorosilicate and 0.2 to 0.5 parts of a crystal form controller by weight; the second component includes 45 to 55 parts of water and 45 to 55 parts of nitric acid by weight.The etching liquid can obtain a pointed first depression 12, so that the etched glass 110 has a flashing effect and presents a flashing sand appearance. In one embodiment of the present application, the etching liquid includes 15wt% to 25wt% of ammonium bifluoride, 3wt% to 10wt% of sodium fluoride, 5wt% to 12wt% of aluminum fluoride, 8wt% to 20wt% of nitric acid, 12wt% to 25wt% of sulfuric acid, 2wt% to 8wt% of ammonium fluorosilicate, 5wt% to 8wt% of barium sulfate, 3wt% to 6wt% of sodium nitrate, 0.8wt% to 1.5wt% of zinc chloride, 3wt% to 5wt% of sucrose and 10wt% to 20wt% of water. The etching liquid can obtain a diamond-shaped first depression 12, so that the etched glass 110 has a flashing effect and presents a flashing sand appearance.

[0029] In one embodiment of the present application, the temperature of the etching process is 10°C to 30°C, and the time is 1min to 10min, which is more conducive to the formation of the first recessed portion 12, and the etching effect is more uniform, and a better fine sand effect can be obtained. Specifically, the temperature of the etching process can be but not limited to 10°C, 15°C, 17°C, 20°C, 22°C, 25°C or 30°C, and the time of the etching process can be but not limited to 1min, 3min, 5min, 8min, 9min or 10min, etc. Among them, the etching process can be performed on one surface of the glass substrate, and the etching process can also be performed on multiple surfaces of the glass substrate, and the surface that is not etched can also be protected.

[0030] In one embodiment of the present application, the first recessed portion 12 has at least one reflective surface, so that the etched glass 110 and the glass shell 100 can reflect light during the rotation process to produce bright spots and achieve a sparkling effect, so that the etched glass 110 and the glass shell 100 have a flashing sand effect in the macro sense, enriching the appearance effect. Specifically, the etched glass 110 with a flashing sand effect can be obtained by, but is not limited to, etching the glass 110 substrate with a flashing sand etching liquid, thereby helping to further enhance the richness of the appearance of the glass shell 100. In one embodiment of the present application, the first recessed portion 12 can be a polyhedral structure, such as a rectangular parallelepiped structure, a quasi-rectangular parallelepiped structure, a pyramid structure, a quasi-pyramid structure, a prism structure, a quasi-prism structure, etc. In one embodiment of the present application, the reflective surface can be a plane or a nearly plane. When the reflective surface is a plane, the reflection direction of the light is more consistent, and the flashing effect of the etched glass 110 is more obvious. Please refer to Figure 2, is a cross-sectional schematic diagram of an etched glass provided in one embodiment of the present application, wherein the surface of the etched glass 110 has a first recessed portion 12, and the first recessed portion 12 has at least one reflective surface. In one embodiment of the present application, the first recessed portion 12 has at least one reflective surface, and the acute angle between the reflective surface and the surface of the etched glass 110 is 10° to 45°, which helps to further enhance the reflection intensity of light and achieve a more obvious and smart flash sand visual effect. It can be understood that the surface of the etched glass 110 is a surface having a first recessed portion 12. Specifically, the acute angle between the reflective surface and the surface of the etched glass 110 can be, but is not limited to, 10°, 12°, 15°, 18°, 20°, 23°, 25°, 27°, 30°, 33°, 35°, 39°, 40°, 43° or 45°, etc. By providing a first recessed portion 12 having a reflective surface, the haze of the etched glass 110 can be increased, and the visual effect of the etched glass 110 can be further improved. In one embodiment of the present application, the haze of the etched glass 110 is greater than or equal to 70%, which enhances the hazy beauty of the etched glass 110. Specifically, the haze of the etched glass 110 may be, but is not limited to, greater than 70%, greater than 75%, greater than 78%, greater than 80%, greater than 82%, greater than 85%, etc. In one embodiment of the present application, the etched glass 110 may be an anti-glare glass, which is beneficial to expanding the application scenarios of the glass housing 100.

[0031] In one embodiment of the present application, the depth of the first recessed portion 12 is 6μm to 15μm, which can produce a fine sand effect and make the etched glass 110 have a smooth touch. Specifically, the depth of the first recessed portion 12 can be but is not limited to 6μm, 8μm, 9μm, 10μm, 11μm, 13μm, 14μm or 15μm, etc. In one embodiment of the present application, the depth of the first recessed portion 12 can be 6μm to 10μm, which can further enhance the delicate appearance of the etched glass 110. In another embodiment of the present application, the depth of the first recessed portion 12 can be 10μm to 15μm, which makes the fine sand effect of the etched glass 110 more obvious. In one embodiment of the present application, the maximum radial dimension of the first recessed portion 12 is 40μm to 100μm, so that the etched glass 110 has a fine sand effect and a smooth touch. The maximum radial dimension of the first recessed portion 12 is the maximum dimension of the orthographic projection of the first recessed portion 12 on the surface of the etched glass 110 having the first recessed portion 12. Specifically, the maximum radial dimension of the first recessed portion 12 may be, but is not limited to, 40 μm, 50 μm, 55 μm, 60 μm, 70 μm, 78 μm, 80 μm, 90 μm, 93 μm or 100 μm, etc.

[0032] In one embodiment of the present application, before etching the glass substrate, a photoresist can also be coated on the surface of the glass substrate, and a photoresist protective layer can be obtained after curing, exposure, and development. The glass substrate covered with the photoresist protective layer can avoid etching treatment, and the glass substrate not covered by the photoresist protective layer will be etched to produce a first recessed portion 12, so that the surface of the etched glass 110 has both an etching area of ​​the first recessed portion 12 and an unetched area, further enriching the appearance effect of the etched glass 110. In the present application, the photoresist can be a positive photoresist or a negative photoresist. In one embodiment of the present application, the curing temperature can be 80°C to 120°C, and the curing time can be 5min to 10min, which is conducive to improving the bonding performance of the cured photoresist and the glass substrate. In one embodiment of the present application, the thickness of the photoresist layer formed after curing can be 5μm to 10μm, so that the unetched part of the glass substrate can be better protected. During the exposure process, a light source (such as ultraviolet light) is irradiated on the photoresist layer, wherein the exposed portion of the photoresist layer formed by the positive photoresist will dissolve and disperse in the developer, and the unexposed portion will form a photoresist protective layer; the exposed portion of the photoresist layer formed by the negative photoresist will form a photoresist layer, and the unexposed portion will dissolve and disperse in the developer. In one embodiment of the present application, laser direct imaging can be used for exposure, thereby improving the accuracy of exposure. During the development process, the developer can be selected according to the components of the photoresist so that the exposed positive photoresist and the unexposed negative photoresist are dissolved therein. In one embodiment of the present application, the developer can be an alkaline solution, the pH value of the developer can be 8 to 14, and the development temperature can be 20°C to 40°C, which can obtain a better development effect. The setting position of the photoresist protective layer on the surface of the glass substrate can be selected as needed, and of course, the photoresist protective layer can be not set, and the entire surface of the glass substrate can be etched. After the etching is completed, the photoresist protective layer can be removed by a photolithography stripping liquid to obtain an etched glass 110. In the present application, a patterned photoresist protective layer can be achieved by controlling the exposure position. After the etching process, the first recessed portion 12 on the surface of the etched glass 110 appears patterned as a whole, so that the etched glass 110 not only has the fine sand effect brought by the first recessed portion 12 itself, but also has the patterned effect brought by all the first recessed portions 12 on a macro scale, further enriching the appearance of the etched glass 110.

[0033] The specific shape and size of the glass substrate in the present application can be adjusted according to actual product needs. For example, a large glass substrate can be selected as the raw material, and the large glass substrate can be cut after an etching process to obtain an etched glass 110 of a desired size. Of course, a glass substrate of a desired size can also be directly selected for etching.

[0034] In S102, a second recessed portion is formed on the etched glass by a die-casting process, and part of the first recessed portion is on the peripheral wall of the second recessed portion. In other words, the size of the second recessed portion is larger than that of the first recessed portion, that is, the first recessed portion 12 is relatively small, and the shape of a single first recessed portion 12 cannot be clearly identified, but multiple first recessed portions 12 can present an overall fine sand effect, and the second recessed portion 13 is relatively large, with a clear touch, and even the shape of a single second recessed portion 13 can be identified, which is conducive to enhancing the three-dimensional sense and layering of the glass shell 100.

[0035] In the present application, the etched glass 110 can be placed in a mold with convex patterns to perform a die-casting process, so as to obtain the second recessed portion 13. In one embodiment of the present application,

[0036] The etched glass 110 is placed in a mold, and the surface of the mold facing the etched glass 110 with the first recessed portion 12 is provided with raised patterns, and the raised patterns are complementary to the second recessed portions 13; after the die-casting process, a plurality of second recessed portions 13 are formed on the surface of the etched glass 110 with the first recessed portion 12. The raised patterns can be formed on the mold by processing (such as laser engraving, etc.), and the material of the mold can be processed, and the specific material of the mold can be, but not limited to, graphite, etc. The raised patterns on the surface of the mold are transferred to the etched glass 110 by the die-casting process, and the die-casting process is controlled so that the raised patterns can be transferred to the etched glass 110 to form the second recessed portions 13 during the die-casting process, and the morphology and distribution of the first recessed portions 12 will not be destroyed, so that the glass shell 100 has both the first recessed portion 12 and the second recessed portion 13, and the first recessed portion 12 can also be dispersed in the second recessed portion 13, thereby improving the overall appearance of the glass shell 100. The raised lines on the mold surface can be designed as needed, and there is no limitation on this. The size of the raised lines is larger than the size of the first recessed part 12, that is, the longitudinal size of the raised lines is larger than the longitudinal size of the first recessed part 12, and the radial size of the raised lines is larger than the radial size of the first recessed part 12, so that the first recessed part 12 on the glass shell 100 can be located on the peripheral wall 131 of the second recessed part 13. In one embodiment of the present application, the height of the raised lines is 20μm to 50μm, so that the longitudinal size of the second recessed part 13 formed after die casting can be large, compared with the first recessed part 12, and the degree of visibility to the naked eye is increased, thereby improving the macroscopic texture effect. Specifically, the height of the raised lines can be, but is not limited to, 20μm, 25μm, 28μm, 30μm, 33μm, 35μm, 39μm, 40μm, 44μm, 45μm, 48μm or 50μm, etc. In one embodiment of the present application, the maximum radial dimension of the raised pattern is greater than or equal to 200 μm, so that the structure of the second recessed portion 13 formed after die casting is obvious, with obvious touch and visual sense. The maximum radial dimension of the raised pattern is the maximum dimension of the positive projection of the raised pattern on the surface of the mold with the raised pattern. Specifically, the maximum radial dimension of the raised pattern can be, but is not limited to, 200 μm or more, 350 μm or more, 450 μm or more, 500 μm or more, 680 μm or more, 730 μm or more, 800 μm or more, 900 μm or more, 1000 μm or more, etc.

[0037] In one embodiment of the present application, the temperature of the die-casting process is 85°C to 135°C lower than the softening point of the etched glass 110, so that the second recessed portion 13 can be formed on the surface of the etched glass 110, while the original morphology and size of the first recessed portion 12 on the surface of the etched glass 110 will not be destroyed, so that the morphology and size of the first recessed portion 12 are still within the required range. It can be understood that the temperature of the die-casting process is higher than the strain point of the etched glass 110, ensuring that the etched glass 110 has a certain softening property and ensuring the progress of die-casting. Specifically, the temperature of the die-casting process is 85°C, 90°C, 93°C, 95°C, 97°C, 100°C, 105°C, 110°C, 115°C, 116°C, 125°C or 135°C lower than the softening point of the etched glass 110. In one embodiment of the present application, the temperature of the die-casting process can be 700°C to 850°C, which is higher than the strain point of the etched glass 110 and 85°C to 135°C lower than the softening point of the etched glass 110, ensuring the die-casting process without affecting the first recessed portion 12. Specifically, the temperature of the die-casting process can be, but is not limited to, 700°C, 720°C, 750°C, 775°C, 790°C, 800°C, 810°C, 835°C, 840°C or 850°C. In one embodiment, the temperature of the die-casting process can be 770°C to 800°C. For example, the etched glass 110 can be etched Corning GG5 glass, which has a softening point of 885°C. In one embodiment of the present application, the pressure of the die-casting process is 0.3MPa to 0.5MPa, ensuring that the second recessed portion 13 is formed on the surface of the etched glass 110, while not affecting the morphology and size of the first recessed portion 12. Specifically, the pressure of the die-casting process may be, but is not limited to, 0.3MPa, 0.35MPa, 0.38MPa, 0.4MPa, 0.43MPa, 0.45MPa, 0.48MPa or 0.5MPa, etc. In one embodiment of the present application, the die-casting process lasts for 5 to 10 minutes, so as to facilitate the die-casting and the maintenance of the first recessed portion 12. Specifically, the die-casting process lasts for, but is not limited to, 5 minutes, 6 minutes, 7 minutes, 8 minutes, 9 minutes or 10 minutes, etc.

[0038] The surface of the etched glass 110 is provided with a first recessed portion 12 and a second recessed portion 13 by a die-casting process, wherein the first recessed portion 12 makes the glass housing 100 present a fine sand effect, for example, a flashing sand effect, and the etching area can be controlled so that the distribution of the entire first recessed portion 12 is patterned, further enriching the appearance of the glass housing 100, and the second recessed portion 13 is a texture with obvious tactile and three-dimensional sense, so that the glass housing 100 has a textured feel, and the first recessed portion 12 and the second recessed portion 13 bring microscopic and macroscopic texture effects to the glass housing 100, and the layering is enhanced, which greatly enriches the visual effect of the glass housing 100 and improves the appearance expression. Please refer to Figure 3, is a cross-sectional schematic diagram of a glass shell provided in one embodiment of the present application, the glass shell 100 includes a glass substrate 11, a plurality of first recessed portions 12 and a plurality of second recessed portions 13, the glass substrate 11 includes a first surface 111, the second recessed portions 13 are arranged on the first surface 111, the second recessed portions 13 have a peripheral wall 131, a portion of the first recessed portions 12 are arranged on the first surface 111, and a portion of the first recessed portions 12 are arranged on the peripheral wall 131.

[0039] See also Figure 4 , is a flow chart of a method for preparing a glass shell provided in another embodiment of the present application, comprising:

[0040] S201: performing an etching process on a glass substrate to form a plurality of first recessed portions on a surface of the glass substrate to obtain etched glass.

[0041] S202: performing a die-casting process on the etched glass to form a plurality of second recessed portions on the surface of the etched glass having the first recessed portion, and part of the first recessed portions is disposed on the peripheral walls of the second recessed portions.

[0042] S203: After heat bending, a glass shell is obtained.

[0043] S201 and S202 may refer to the description of S101 and S102 above, which will not be repeated here.

[0044] In S203, the etched glass 110 after the die-casting process can be subjected to heat bending treatment to obtain a glass shell 100 with a curvature, thereby enhancing the smoothness of the glass shell 100 and further expanding its application scenarios. In one embodiment of the present application, the temperature of the heat bending treatment is 165°C to 205°C lower than the softening point of the etched glass 110, so that the etched glass 110 after the die-casting process can be bent without destroying the morphology and size of the surface texture. It can be understood that the temperature of the heat bending treatment is higher than the strain point of the etched glass 110, ensuring that the etched glass 110 has a certain softening property and can be bent. Specifically, the temperature of the heat bending treatment is 165°C, 170°C, 173°C, 175°C, 180°C, 185°C, 188°C, 190°C, 200°C or 205°C lower than the softening point of the etched glass 110. In one embodiment of the present application, the temperature of the hot bending treatment can be 680°C to 720°C, which is higher than the strain point of the etched glass 110 and 165°C to 205°C lower than the softening point of the etched glass 110, so as to ensure the hot bending treatment without affecting the surface texture. Specifically, the temperature of the hot bending treatment can be, but not limited to, 680°C, 685°C, 690°C, 695°C, 700°C, 703°C, 705°C, 710°C, 715°C or 720°C, etc. In one embodiment of the present application, the pressure of the hot bending treatment is 0.3MPa to 0.5MPa, so as to ensure the hot bending without affecting the surface texture. Specifically, the pressure of the hot bending treatment can be, but not limited to, 0.3MPa, 0.35MPa, 0.38MPa, 0.4MPa, 0.43MPa, 0.45MPa, 0.48MPa or 0.5MPa, etc. In one embodiment of the present application, the time of the heat bending treatment is 45s to 5min, so as to ensure the heat bending without affecting the surface texture. Specifically, the time of the heat bending treatment can be, but is not limited to, 1min, 2min, 2.5min, 3min, 3.5min or 4min. In one embodiment of the present application, processing (such as engraving, etc.) and polishing can be performed after the heat bending treatment, and the etched glass 110 after the heat bending can be further reshaped and surface treated to improve the smoothness of the appearance of the glass shell 100. In one embodiment of the present application, the glass shell 100 includes a glass substrate 11, a plurality of first recessed portions 12 and a plurality of second recessed portions 13, the glass substrate 11 includes a first surface 111, the second recessed portion 13 is arranged on the first surface 111, the second recessed portion 13 has a peripheral wall 131, part of the first recessed portion 12 is arranged on the first surface 111, and part of the first recessed portion 12 is arranged on the peripheral wall 131; the glass substrate 11 includes a main body and an extension portion arranged at the edge of the main body, and the extension portion is bent toward the main body.Among them, the first recessed portion 12 is distributed in the main portion of the glass substrate 11, and can also be distributed in the extended portion of the glass substrate 11, or in the main portion and the extended portion of the glass substrate 11; the second recessed portion 13 is distributed in the main portion of the glass substrate 11, and can also be distributed in the extended portion of the glass substrate 11, or in the main portion and the extended portion of the glass substrate 11.

[0045] See also Figure 5 , is a flow chart of a method for preparing a glass shell provided in another embodiment of the present application, comprising:

[0046] S301: performing an etching process on a glass substrate to form a plurality of first recessed portions on a surface of the glass substrate to obtain etched glass.

[0047] S302: performing a die-casting process on the etched glass to form a plurality of second recessed portions on the surface of the etched glass having the first recessed portion, and part of the first recessed portions is disposed on the peripheral walls of the second recessed portions.

[0048] S303: After strengthening treatment, a glass shell is obtained.

[0049] S301 and S302 may refer to the description of S101 and S102 above, which will not be repeated here.

[0050] In S303, the etched glass 110 after the die-casting process can improve the mechanical properties and service life of the glass shell 100 through strengthening treatment. In one embodiment of the present application, the etched glass 110 after the die-casting process is placed in molten salt for strengthening treatment. Specifically, the molten salt may include at least one of potassium molten salt and sodium molten salt, such as potassium nitrate, sodium nitrate, etc. In one embodiment of the present application, the temperature of the strengthening treatment may be 350°C to 400°C. Specifically, the temperature of the strengthening treatment may be, but is not limited to, 350°C, 360°C, 365°C, 370°C, 375°C, 380°C, 390°C or 400°C, etc. In one embodiment of the present application, a glass shell 100 is obtained after strengthening treatment, and the surface of the glass shell 100 has a stress layer, the thickness of the stress layer is 7μm to 9μm, and the surface compressive stress of the glass shell 100 is 950MPa to 1150MPa. The glass shell 100 has excellent mechanical properties, which is conducive to its use. Specifically, the thickness of the stress layer may be, but is not limited to, 7 μm, 7.3 μm, 7.5 μm, 7.8 μm, 8 μm, 8.5 μm, 8.8 μm or 9 μm, and the surface compressive stress of the glass housing 100 may be, but is not limited to, 950 MPa, 960 MPa, 975 MPa, 980 MPa, 1000 MPa, 1050 MPa, 1100 MPa, 1120 MPa or 1150 MPa.

[0051] See also Figure 6, is a flow chart of a method for preparing a glass shell provided in another embodiment of the present application, comprising:

[0052] S401: performing an etching process on a glass substrate to form a plurality of first recessed portions on a surface of the glass substrate to obtain etched glass.

[0053] S402: performing a die-casting process on the etched glass to form a plurality of second recessed portions on the surface of the etched glass having the first recessed portion, and part of the first recessed portions is disposed on the peripheral walls of the second recessed portions.

[0054] S403: After heat bending and strengthening treatment, a glass shell is obtained.

[0055] By performing etching, die-casting, heat bending and strengthening treatments on the etched glass 110, it is advantageous to obtain a glass shell 100 with excellent performance and rich appearance effects. The heat bending treatment may refer to the description in S203 above, and the strengthening treatment may refer to the description in S303 above, which will not be repeated here.

[0056] The present application provides a glass housing 100, comprising a glass substrate 11, a plurality of first recessed portions 12 and a plurality of second recessed portions 13, wherein the glass substrate 11 comprises a first surface 111, the second recessed portions 13 are arranged on the first surface 111, a portion of the first recessed portions 12 are arranged on the first surface 111, and a portion of the first recessed portions 12 are arranged on the peripheral wall 131 of the second recessed portions 13. The glass housing 100 can be prepared by any of the preparation methods in the above embodiments. Figure 3 This is an exemplary cross-sectional schematic diagram of the glass shell 100 provided in the present application. The first recessed portion 12 on the surface of the glass shell 100 is an etched texture, which is tiny, invisible to the naked eye and relatively smooth, presenting a fine sand effect as a whole; the second recessed portion 13 is a die-cast texture, which is relatively large, so that the first recessed portion 12 can be set on its peripheral wall 131, thereby bringing a more obvious and intuitive texture vision, and the superposition of the first recessed portion 12 and the second recessed portion 13 enhances the layering and three-dimensional sense of the texture effect of the glass shell 100, enriching its appearance effect.

[0057] In one embodiment of the present application, the peripheral wall 131 of the second recessed portion 13 includes a side wall; in this case, the first recessed portion 12 can be disposed on the side wall of the second recessed portion 13. In another embodiment of the present application, the peripheral wall 131 of the second recessed portion 13 includes a side wall and a bottom wall connected to the side wall; in this case, the first recessed portion 12 can be disposed on at least one of the side wall and the bottom wall.

[0058] In one embodiment of the present application, the first recessed portion 12 has at least one reflective surface, so that the glass housing 100 has a flashing effect, and the first recessed portion 12 can bring a flashing sand appearance, which greatly enriches the appearance of the glass housing 100. In one embodiment of the present application, the first recessed portion 12 is arranged on the first surface 111, and the acute angle between the reflective surface and the first surface 111 is 10° to 45°, which is conducive to further improving the reflection intensity of light and achieving a more obvious and smart flashing sand visual effect. Specifically, the acute angle between the reflective surface and the first surface 111 can be, but not limited to, 10°, 12°, 15°, 18°, 20°, 23°, 25°, 27°, 30°, 33°, 35°, 39°, 40°, 43° or 45°, etc. In another embodiment of the present application, when the first recessed portion 12 is disposed on the peripheral wall 131 of the second recessed portion 13, the acute angle between the reflective surface and the peripheral wall 131 is 10° to 45°, which is conducive to further improving the reflection intensity of light and achieving a more obvious and flexible flash sand visual effect. Specifically, the acute angle between the reflective surface and the peripheral wall 131 can be, but is not limited to, 10°, 12°, 15°, 18°, 20°, 23°, 25°, 27°, 30°, 33°, 35°, 39°, 40°, 43° or 45°, etc.

[0059] In one embodiment of the present application, the depth of the first recessed portion 12 is 6 μm to 15 μm, so that the glass shell 100 has a more delicate fine sand effect, and the smoothness of the area with only the first recessed portion 12 is good. In one embodiment of the present application, the maximum radial dimension of the first recessed portion 12 is 40 μm to 100 μm, so that the glass shell 100 has a better fine sand effect and smooth touch. In one embodiment of the present application, at least part of the first recessed portion 12 is patterned, so that the glass shell 100 also has a macroscopic patterned visual effect, enriching its appearance. In one embodiment of the present application, the spacing between adjacent first recessed portions 12 can be less than or equal to 10 μm, so that the fine sand effect on the surface of the glass shell 100 can be enhanced, and when the first recessed portion 12 has a reflective surface, the flash effect of the glass shell 100 is more concentrated and obvious. In the present application, the cross-section of the first recessed portion 12 along the thickness direction of the glass shell 100 can be a triangle, a quadrilateral, a semicircular arc surface, an irregular shape, etc.

[0060] In one embodiment of the present application, the depth of the second recessed portion 13 is 20 μm to 50 μm, which can enhance the tactile and visual sense of the surface texture of the glass shell 100, achieve a more obvious texture effect, and enrich its appearance. Specifically, the depth of the second recessed portion 13 can be, but is not limited to, 20 μm, 25 μm, 28 μm, 30 μm, 33 μm, 35 μm, 39 μm, 40 μm, 44 μm, 45 μm, 48 μm or 50 μm, etc. In one embodiment of the present application, the depth of the second recessed portion 13 can be 30 μm to 50 μm, which can further enhance the stereoscopic and tactile sense of the texture effect of the glass shell 100. In one embodiment of the present application, the maximum radial dimension of the second recessed portion 13 is greater than or equal to 200 μm, which further enhances the stereoscopic and tactile sense of the texture effect of the glass shell 100. The maximum radial dimension of the second recessed portion 13 is the maximum dimension of the orthographic projection of the second recessed portion 13 on the first surface 111. Specifically, the maximum radial dimension of the second recessed portion 13 may be, but is not limited to, 200 μm or more, 350 μm or more, 450 μm or more, 500 μm or more, 680 μm or more, 730 μm or more, 800 μm or more, 900 μm or more, 1000 μm or more, etc. In one embodiment of the present application, the extension direction of the second recessed portion 13 is linear or curved, which can further enhance the appearance of the glass shell 100. In one embodiment of the present application, the extension direction of the second recessed portion 13 is wavy, so that the surface of the glass shell 100 has wavy patterns, which can produce a visual effect similar to flowing water. At the same time, the setting of the first recessed portion 12 can fill the effect of the second recessed portion 13, so that the glass shell 100 has a visual effect similar to flowing water and also has a fine sand effect. In the present application, the spacing between adjacent second recessed portions 13 can be selected as needed. In one embodiment of the present application, the spacing between adjacent second recessed portions 13 varies, which can enhance the fluidity of the surface texture effect of the glass housing 100 and enrich its appearance. Figure 7 , is a schematic diagram of the appearance of a glass shell provided by an embodiment of the present application, wherein the second recessed portion 13 on the surface of the glass shell 100 is a wave pattern, the first recessed portion 12 has at least one reflective surface, and the glass shell 100 as a whole has a glittering fine sand effect, a strong sense of layering and three-dimensionality in appearance, and has the touch of the second recessed portion 13. In the present application, the cross-section of the second recessed portion 13 along the thickness direction of the glass shell 100 can be a triangle, a quadrilateral, a semicircular arc surface, an irregular shape, etc.; for example, the cross-section of the second recessed portion 13 can have a plane or a curved surface.

[0061] In one embodiment of the present application, the haze of the glass shell 100 is greater than or equal to 70%, so that the glass shell 100 has a hazy beauty. Specifically, the haze of the glass shell 100 may be, but is not limited to, greater than 70%, greater than 75%, greater than 78%, greater than 80%, greater than 82%, greater than 85%, etc. In one embodiment of the present application, the visible light transmittance of the glass shell 100 is less than or equal to 30%. Specifically, the visible light transmittance of the glass shell 100 may be, but is not limited to, less than 5%, less than 10%, less than 15%, less than 20%, less than 25%, etc.

[0062] In the present application, the thickness and shape of the glass shell 100 can be selected according to the application requirements. In one embodiment of the present application, the thickness of the glass shell 100 can be 0.5 mm to 0.7 mm, which not only ensures the mechanical properties of the glass shell 100, but also does not increase the weight and thickness too much, which is conducive to its use. The glass shell 100 can be flat or curved. In one embodiment of the present application, the glass substrate 11 includes a main body and an extension portion arranged at the edge of the main body, and the extension portion is bent toward the main body, so that the glass shell 100 is curved.

[0063] In one embodiment of the present application, the glass housing 100 may further include a decorative layer, which is disposed on a surface opposite to the first surface 111. The appearance of the glass housing 100 may be further enriched by providing the decorative layer. Specifically, the decorative layer may include, but is not limited to, a color layer, an optical film layer, etc.; for example, the color layer, the optical film layer, etc. may be formed by, but is not limited to, coating, deposition, lamination, etc.

[0064] The present application provides an electronic device 200, including the glass housing 100 in any of the above embodiments. It is understandable that the electronic device 200 can be, but is not limited to, a mobile phone, a tablet computer, a laptop computer, a watch, an MP3, an MP4, a GPS navigator, a digital camera, etc. Figure 8 , is a schematic diagram of the structure of an electronic device provided in one embodiment of the present application, wherein the electronic device 200 includes a glass housing 100. The glass housing 100 enables the electronic device 200 to have a rich appearance. In one embodiment of the present application, the electronic device 200 also includes a display device connected to the glass housing 100 to expand the use scenario of the electronic device 200.

[0065] The above is a detailed introduction to the contents provided in the implementation mode of the present application. This article explains and illustrates the principles and implementation modes of the present application. The above explanation is only used to help understand the method and core idea of ​​the present application. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation mode and application scope. In summary, the contents of this specification should not be understood as limiting the present application.

Claims

1. A method for preparing a glass shell, characterized in that: include: Performing an etching process on a glass substrate to form a plurality of first recessed portions on a surface of the glass substrate to obtain etched glass; The etched glass is subjected to a die-casting process to form a plurality of second recessed portions on the surface of the etched glass having the first recessed portion, thereby obtaining a glass shell; wherein part of the first recessed portion is arranged on the peripheral wall of the second recessed portion.

2. The preparation method according to claim 1, characterized in that The temperature of the die casting process is 85° C. to 135° C. lower than the softening point of the etched glass.

3. The preparation method according to claim 1 or 2, characterized in that: The temperature of the die-casting process is 700° C. to 850° C., the pressure is 0.3 MPa to 0.5 MPa, and the time is 5 min to 10 min.

4. The preparation method according to claim 1, characterized in that: The die-casting process is performed on the etched glass to form a plurality of second recessed portions on the surface of the etched glass having the first recessed portion, comprising: The etched glass is placed in a mold, wherein a surface of the mold facing the etched glass and having the first recessed portion is provided with raised patterns, and the raised patterns are complementary to the second recessed portion; After the die-casting process, a plurality of the second recessed portions are formed on the surface of the etched glass having the first recessed portion.

5. The preparation method according to claim 1, characterized in that: The die-casting process also includes a hot bending process, the temperature of the hot bending process is 680° C. to 720° C., and the pressure of the hot bending process is 0.3 MPa to 0.5 MPa.

6. A glass housing, characterized in that: The invention comprises a glass substrate, a plurality of first recessed parts and a plurality of second recessed parts. The glass substrate comprises a first surface. The second recessed parts are arranged on the first surface. Part of the first recessed parts are arranged on the first surface. Part of the first recessed parts are arranged on the peripheral walls of the second recessed parts.

7. The glass housing according to claim 6, wherein: The first recessed portion has at least one reflective surface; When the first recessed portion is disposed on the first surface, the acute angle between the reflective surface and the first surface is 10° to 45°; When the first recessed portion is disposed on the peripheral wall, the acute angle between the reflective surface and the peripheral wall is in a range of 10° to 45°.

8. The glass housing according to claim 6, wherein: The depth of the first recessed portion is 6 μm to 15 μm, and the maximum radial dimension of the first recessed portion is 40 μm to 100 μm; The depth of the second recessed portion is 20 μm to 50 μm, and the maximum radial dimension of the second recessed portion is greater than or equal to 200 μm.

9. The glass housing according to claim 6, wherein: The surface of the glass shell has a stress layer, the thickness of the stress layer is 7 μm to 9 μm, and the surface compressive stress of the glass shell is 950 MPa to 1150 MPa.

10. An electronic device, characterized in that: The invention comprises a glass shell prepared by the preparation method according to any one of claims 1 to 5 or a glass shell according to any one of claims 6 to 9.

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