Glass shell, preparation method thereof and electronic device

Abstract

The application provides a glass shell, a preparation method thereof and an electronic device, wherein the preparation method of the glass shell comprises: 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 an etched glass; and performing a die casting process on the etched glass to form a plurality of second recessed portions on a surface of the etched glass having the first recessed portions, to obtain a glass shell; and part of the first recessed portions are arranged on a peripheral wall of the second recessed portions.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of electronic equipment, and particularly relates to a glass shell and a preparation method thereof and an electronic equipment. BACKGROUND

[0002] In the related art, etching glass can produce etching textures, so as to change the appearance effect of the glass, which is conducive to its use in electronic equipment. However, the etching texture has small variability, so that the etching effect is relatively single, resulting in small variation of the appearance of the glass, and the homogenization phenomenon of the appearance effect of the electronic equipment is serious. SUMMARY

[0003] Therefore, the present application provides a glass shell and a preparation method thereof and an electronic equipment.

[0004] In a first aspect, the present application provides a preparation method of a glass shell, 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 an etched glass;

[0006] performing a die casting process on the etched glass to form a plurality of second recessed portions on a surface of the etched glass having the first recessed portions, to obtain a glass shell; and wherein part of the first recessed portions are arranged on a peripheral wall of the second recessed portions.

[0007] In a second aspect, the present application provides a glass shell, comprising a glass base body, a plurality of first recessed portions and a plurality of second recessed portions, wherein the glass base body comprises a first surface, the second recessed portions are arranged on the first surface, part of the first recessed portions are arranged on the first surface, and part of the first recessed portions are arranged on a peripheral wall of the second recessed portions.

[0008] In a third aspect, the present application provides an electronic equipment comprising the glass shell prepared by the preparation method of the first aspect or the glass shell of the second aspect.

[0009] The present application obtains a glass shell having first recessed portions and second recessed portions through an etching process and a die casting process. The first recessed portions produced by the etching process are overall delicate, so that the glass shell has a texture visual effect in a micro view. The second recessed portions produced by the die casting process are scattered between the first recessed portions, so that the glass shell can have a texture visual effect and a texture touch in a macro view. The first recessed portions and the second recessed portions enhance the level and the stereoscopic sense of the texture effect of the glass shell, enrich the appearance of the glass shell, and are conducive to its use in electronic equipment. BRIEF DESCRIPTION OF DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be described below.

[0011] Figure 1 The flow chart of the preparation method of the glass shell provided by an embodiment of the present application.

[0012] Figure 2 The cross-sectional schematic diagram of the etched glass provided by an embodiment of the present application.

[0013] Figure 3 The cross-sectional schematic diagram of the glass shell provided by an embodiment of the present application.

[0014] Figure 4 The flow chart of the preparation method of the glass shell provided by another embodiment of the present application.

[0015] Figure 5 The flow chart of the preparation method of the glass shell provided by still another embodiment of the present application.

[0016] Figure 6 The flow chart of the preparation method of the glass shell provided by still another embodiment of the present application.

[0017] Figure 7 The appearance schematic diagram of the glass shell provided by an embodiment of the present application.

[0018] Figure 8 The structural schematic diagram of the electronic device provided by an embodiment of the present application.

[0019] Label explanation:

[0020] Glass substrate 11, first surface 111, first recess 12, second recess 13, peripheral wall 131, glass shell 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 those skilled in the art, without departing from the principles of the present application, can make a number of improvements and refinements, these improvements and refinements are also considered to be within the scope of protection of the present application.

[0022] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For the purpose of simplifying the present application, the components 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 repeatedly refer to numbers and / or letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not in itself indicate a relationship between the various embodiments and / or settings being discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art can realize the application of other processes and / or the use of other materials.

[0023] Please refer to Figure 1 The flow chart of the preparation method of the glass shell provided by an embodiment of the present application comprises the following steps:

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

[0025] S102: performing a die casting process on the etched glass to form a plurality of second recesses on the surface of the etched glass having the first recesses, to obtain a glass shell; wherein part of the first recesses are arranged on the peripheral wall of the second recesses.

[0026] The present application, through the etching process and the die casting process, makes the glass shell 100 have both the etched first recesses 12 and the die cast second recesses 13. The first recesses 12 produced by the etching process are relatively fine textures, so that the glass shell 100 has a fine sand effect; the second recesses 13 produced by the die casting process, part of the first recesses 12 will be arranged on the peripheral wall 131 of the second recesses 13, so the second recesses 13 are textures with larger size, which can make the glass shell 100 have a macroscopic texture pattern effect, and the sense of hierarchy and stereoscopic sense are enhanced. The combination of the first recesses 12 and the second recesses 13 makes the glass shell 100 have two layers of texture effects in micro and macro, and the glass shell 100 not only has a large surface fine sand effect and a texture pattern visual appearance, but also has a texture touch, greatly enriching the appearance effect of the glass shell 100, avoiding homogenization, and being conducive to improving the product competitiveness of the glass shell 100. Only using the etching method to obtain the product surface texture is small, the stereoscopic sense, the sense of hierarchy and the touch are weak, and the homogenization phenomenon is serious; in the present application, not only etching is performed, but also die casting is performed, so that the second recesses 13 with stronger stereoscopic sense are arranged between the dispersed first recesses 12 on the glass shell 100, and the two textures are combined, so that the glass shell 100 has obvious stereoscopic texture in macro and delicate fine sand effect in micro, realizing a more rich appearance.

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

[0028] In the present application, the glass substrate can be etched by an etching solution. The etching solution can be selected according to the material of the glass substrate or the etching effect. The glass substrate can be, but is not limited to, aluminum-silicon glass, boron-silicon glass, etc. This is beneficial to improve the mechanical properties and service life of the glass shell 100. In an embodiment of the present application, the glass substrate can be high-aluminum-silicon glass. The mass content of aluminum oxide in the high-aluminum glass is greater than 12%. The etching solution can include low-flash etching solution, snowflake etching solution, flash sand etching solution, etc. The etching solution can be selected according to the required appearance effect. The texture effect produced by the etching solution is relatively small, and the etching glass 110 appears to be fine sand effect on a macroscopic scale, without a touch feeling. In an embodiment of the present application, the etching solution includes, by weight fraction, 27 to 33 parts of ammonium fluoride, 10 to 15 parts of fluorosilicate, 2 to 3 parts of viscosity regulator, 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. The concentration of the hydrochloric acid is 30 wt% to 36 wt%, and the concentration of the nitric acid is greater than or equal to 95 wt%. The first recess 12 in a pine needle shape can be obtained by using the etching solution, and the appearance effect of the etching glass 110 is improved. In an embodiment of the present application, the etching solution includes 8 wt% to 15 wt% of ammonium fluoride, 15 wt% to 25 wt% of ammonium bifluoride, 5 wt% to 8 wt% of potassium bifluoride, 5 wt% to 10 wt% of phosphoric acid, 10 wt% to 20 wt% of nitric acid, 0.5 wt% to 3 wt% of sodium sulfate, 2 wt% to 6 wt% of copper sulfate, 3 wt% to 8 wt% of sodium nitrate, 0.5 wt% to 2 wt% of sodium dihydrogen phosphate, 0.8 wt% to 3 wt% of ammonium chloride, 8 wt% to 15 wt% of starch, 5 wt% to 10 wt% of glycerol, and 8 wt% to 15 wt% of water. The first recess 12 in a snowflake shape can be obtained by using the etching solution, and the appearance effect of the etching glass 110 is improved. In an embodiment of the present application, the etching solution includes, by weight fraction, 27 to 33 parts of ammonium bifluoride, 10 to 15 parts of fluorosilicate, 2 to 3 parts of viscosity regulator, 18 to 22 parts of hydrochloric acid, 8 to 12 parts of concentrated sulfuric acid, and 23 to 27 parts of water. The concentration of the hydrochloric acid is 30 wt% to 36 wt%, and the concentration of the concentrated sulfuric acid is greater than or equal to 95 wt%. The first recess 12 in a multi-prism shape can be obtained by using the etching solution, so that the etching glass 110 has a fine flash effect and presents a flash sand appearance. In an embodiment of the present application, the etching solution includes a first component and a second component. The first component includes, by weight fraction, 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 crystal form control agent. The second component includes, by weight fraction, 45 to 55 parts of water and 45 to 55 parts of nitric acid.The first recess 12 can be obtained by the etching solution, so that the etched glass 110 has a sparkling effect and presents a sparkling sand appearance. In an embodiment of the present application, the etching solution comprises 15wt% to 25wt% of ammonium hydrogen fluoride, 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 first recess 12 can be obtained by the etching solution, so that the etched glass 110 has a sparkling effect and presents a sparkling sand appearance.

[0029] In an 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 recess 12, 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 is not limited to, 10°C, 15°C, 17°C, 20°C, 22°C, 25°C, or 30°C, etc., and the time of the etching process can be, but is not limited to, 1min, 3min, 5min, 8min, 9min, or 10min, etc. The etching process can be performed on one surface of the glass substrate, or the etching process can be performed on multiple surfaces of the glass substrate, or the surface not subjected to etching can be protected.

[0030] In an embodiment of the present application, the first recess 12 has at least one light-reflecting surface, so that the etched glass 110 and the glass shell 100 can reflect light during rotation to produce bright spots and achieve a sparkling effect, so that the etched glass 110 and the glass shell 100 have a sparkling sand effect in a macroscopic view and a rich appearance effect. Specifically, the etched glass 110 with a sparkling sand effect can be obtained by etching the glass substrate 110 with a sparkling sand etching solution, thereby facilitating further improvement of the appearance richness of the glass shell 100. In an embodiment of the present application, the first recess 12 can have a polyhedral structure, such as a cuboid structure, a cuboid-like structure, a pyramid structure, a pyramid-like structure, a prism structure, a prism-like structure, etc. In an embodiment of the present application, the light-reflecting surface can be a plane or an approximately plane. When the light-reflecting surface is a plane, the reflection direction of light is more consistent, and the sparkling effect of the etched glass 110 is more obvious. Please refer to Figure 2In an embodiment of the present application, the surface of the etched glass 110 has a first recessed portion 12 with at least one light-reflecting surface. In an embodiment of the present application, the first recessed portion 12 has at least one light-reflecting surface with an acute angle of 10° to 45° with the surface of the etched glass 110, which helps to further improve the reflection intensity of light and achieve a more obvious and dynamic sparkling sand visual effect. It can be understood that the surface of the etched glass 110 is the surface with the first recessed portion 12. Specifically, the acute angle of the light-reflecting surface with 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 the first recessed portion 12 with a light-reflecting surface, the haze of the etched glass 110 can be improved, and the visual effect of the etched glass 110 can be further improved. In an embodiment of the present application, the haze of the etched glass 110 is greater than or equal to 70%, which improves the hazy beauty of the etched glass 110. Specifically, the haze of the etched glass 110 can 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 an embodiment of the present application, the etched glass 110 can be an anti-glare glass, which is beneficial to expand the application scenarios of the glass shell 100.

[0031] In an embodiment of the present application, the depth of the first recessed portion 12 is 6 μm to 15 μm, 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, 6 μm, 8 μm, 9 μm, 10 μm, 11 μm, 13 μm, 14 μm or 15 μm, etc. In an embodiment of the present application, the depth of the first recessed portion 12 can be 6 μm to 10 μm, which can further improve the delicate feeling of the appearance effect of the etched glass 110. In another embodiment of the present application, the depth of the first recessed portion 12 can be 10 μm to 15 μm, which makes the fine sand effect of the etched glass 110 more obvious. In an embodiment of the present application, the maximum radial dimension of the first recessed portion 12 is 40 μm to 100 μm, which makes the etched glass 110 have 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 with the first recessed portion 12. Specifically, the maximum radial dimension of the first recessed portion 12 can 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 an embodiment of the present application, before etching the glass substrate, a photoresist can also be coated on the surface of the glass substrate, and after curing, exposure and development, a photoresist protective layer is obtained. The glass substrate covered with the photoresist protective layer can avoid etching treatment, and the glass substrate not covered with the photoresist protective layer will be etched to form a first recess 12, so that the surface of the etched glass 110 has not only the etching area of the first recess 12, but also the area not etched, 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 an embodiment of the present application, the curing temperature can be 80-120°C, and the curing time can be 5-10 min, which is beneficial to improve the bonding performance of the cured photoresist and the glass substrate. In an embodiment of the present application, the thickness of the photoresist layer formed after curing can be 5-10 μm, so that the non-etched part of the glass substrate can be better protected. In the exposure process, the photoresist layer is irradiated by a light source (such as ultraviolet light), and the part of the photoresist layer formed by the positive photoresist after exposure will dissolve and disperse in the developing solution, and the part not exposed will form a photoresist protective layer; the part of the photoresist layer formed by the negative photoresist after exposure will form a photoresist layer, and the part not exposed will dissolve and disperse in the developing solution. In an embodiment of the present application, laser direct imaging can be used for exposure, so as to improve the accuracy of exposure. In the developing process, the developing solution can be selected according to the components of the photoresist, so that the exposed positive photoresist and the unexposed negative photoresist can be dissolved therein. In an embodiment of the present application, the developing solution can be an alkali solution, the pH value of the developing solution can be 8-14, and the developing temperature can be 20-40°C, so as to obtain a better developing effect. The position of the photoresist protective layer on the surface of the glass substrate can be selected as required, and of course the photoresist protective layer can not be provided, and the entire surface of the glass substrate can be etched. After the etching is completed, the photoresist protective layer can be removed by using a photoresist stripping solution to obtain the etched glass 110. In the present application, the patterned photoresist protective layer can be realized by controlling the exposure position, and after the etching process, the first recess 12 on the surface of the etched glass 110 as a whole presents a patterned effect, so that the etched glass 110 not only has the fine sand effect brought by the first recess 12 itself, but also has the patterned effect brought by all the first recesses 12 in the macroscopic view, 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 the actual product needs, for example, a large piece of glass substrate can be selected as the raw material, and the large piece of glass substrate is etched to obtain the etched glass 110 of the required size after cutting, and of course the glass substrate of the required size can also be directly selected for etching.

[0034] In S102, the second recess is formed by a die casting process on the etched glass, and part of the first recess will be on the peripheral wall of the second recess. That is, the size of the second recess is larger than the size of the first recess, that is, the first recess 12 is relatively small, and the morphology of a single first recess 12 cannot be clearly identified, but a plurality of first recesses 12 can present an overall fine sand effect, while the second recess 13 is larger and has a distinct tactile sensation, and even the morphology of a single second recess 13 can be identified, which is beneficial to improve the three-dimensional and level of the glass shell 100.

[0035] In the present application, the die casting process can be performed by placing the etched glass 110 in a mold with raised lines to facilitate obtaining the second recess 13. In an embodiment of the present application,

[0036] The etched glass 110 is placed in a mold, the surface of the mold facing the etched glass 110 with the first recessed part 12 is provided with a raised texture complementary to the second recessed part 13; after the die casting process, a plurality of second recessed parts 13 are formed on the surface of the etched glass 110 with the first recessed part 12. The raised texture on the mold can be formed by machining (such as laser engraving, etc.), and the material of the mold can be graphite or the like according to the machining. The raised texture on the surface of the mold is transferred to the etched glass 110 by the die casting process, and by controlling the die casting process, the raised texture can be transferred to the etched glass 110 to form the second recessed part 13 during the die casting process, while the morphology and distribution of the first recessed part 12 are not damaged, so that the glass shell 100 has both the first recessed part 12 and the second recessed part 13, and the first recessed part 12 can also be dispersed in the second recessed part 13, improving the overall appearance of the glass shell 100. The raised texture on the surface of the mold can be designed as needed, and is not limited. The size of the raised texture is larger than the size of the first recessed part 12, that is, the longitudinal size of the raised texture is larger than the longitudinal size of the first recessed part 12, and the radial size of the raised texture 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 an embodiment of the present application, the height of the raised texture is 20-50 μm, so that the longitudinal size of the second recessed part 13 formed after die casting is large, has a clear tactile sensation compared to the first recessed part 12, and the visible degree is increased, improving the texture effect on the macroscopic. Specifically, the height of the raised texture can be 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 an embodiment of the present application, the maximum radial size of the raised texture is greater than or equal to 200 μm, so that the structure of the second recessed part 13 formed after die casting is obvious, and has a clear tactile sensation and visual sensation. The maximum radial size of the raised texture is the maximum size of the orthogonal projection of the raised texture on the surface of the mold with the raised texture. Specifically, the maximum radial size of the raised texture can be greater than 200 μm, greater than 350 μm, greater than 450 μm, greater than 500 μm, greater than 680 μm, greater than 730 μm, greater than 800 μm, greater than 900 μm, greater than 1000 μm, etc.

[0037] In an embodiment of the present application, the temperature of the die casting process is 85-135℃ lower than the softening point of the etched glass 110, so that the second recessed part 13 can be formed on the surface of the etched glass 110, while the original first recessed part 12 on the surface of the etched glass 110 is not damaged, and the morphology and size of the first recessed part 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, so that the etched glass 110 has a certain softening performance, and the die casting process can be ensured. Specifically, the temperature of the die casting process is 85℃, 90℃, 93℃, 95℃, 97℃, 100℃, 105℃, 110℃, 115℃, 116℃, 125℃ or 135℃ lower than the softening point of the etched glass 110. In an embodiment of the present application, the temperature of the die casting process can be 700-850℃, which is higher than the strain point of the etched glass 110 and 85-135℃ lower than the softening point of the etched glass 110, so that the die casting process can be ensured, while the first recessed part 12 is not affected. Specifically, the temperature of the die casting process can be but is not limited to 700℃, 720℃, 750℃, 775℃, 790℃, 800℃, 810℃, 835℃, 840℃ or 850℃. In an embodiment, the temperature of the die casting process can be 770-800℃. For example, the etched glass 110 can be etched Corning GG5 glass, and the softening point thereof is 885℃. In an embodiment of the present application, the pressure of the die casting process is 0.3-0.5MPa, so that the second recessed part 13 can be formed on the surface of the etched glass 110, while the morphology and size of the first recessed part 12 are not affected. Specifically, the pressure of the die casting process can be but is not limited to 0.3MPa, 0.35MPa, 0.38MPa, 0.4MPa, 0.43MPa, 0.45MPa, 0.48MPa or 0.5MPa. In an embodiment of the present application, the time of the die casting process is 5-10min, so that the die casting process can be ensured, and the first recessed part 12 can be maintained. Specifically, the time of the die casting process can be but is not limited to 5min, 6min, 7min, 8min, 9min or 10min.

[0038] The etched glass 110 has the first recessed part 12 and the second recessed part 13 by the die casting process, wherein the first recessed part 12 makes the glass shell 100 have a fine sand effect, for example, a sparkling sand effect, and the etched area can be controlled to make the distribution of the entire first recessed part 12 present a pattern, further enriching the appearance of the glass shell 100, and the second recessed part 13 is a texture with obvious tactile and stereoscopic feeling, so that the glass shell 100 has a textured hand feeling, and the first recessed part 12 and the second recessed part 13 bring the glass shell 100 a texture effect in micro and macro, and the level of the glass shell 100 is improved, greatly enriching the visual effect of the glass shell 100 and improving the appearance performance. Please refer to Figure 3A cross-sectional schematic view of a glass shell according to an embodiment of the present application is provided, the glass shell 100 includes a glass base 11, a plurality of first recesses 12 and a plurality of second recesses 13, the glass base 11 includes a first surface 111, the second recesses 13 are disposed on the first surface 111, the second recesses 13 have a peripheral wall 131, and part of the first recesses 12 are disposed on the first surface 111 and part of the first recesses 12 are disposed on the peripheral wall 131.

[0039] Referring to Figure 4 A flow chart of a method for preparing a glass shell according to another embodiment of the present application is provided, the method includes:

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

[0041] S202: performing a die casting process on the etched glass to form a plurality of second recesses on the surface of the etched glass having the first recesses, and part of the first recesses are disposed on the peripheral wall of the second recesses.

[0042] S203: obtaining a glass shell after a heat bending treatment.

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

[0044] In S203, the etched glass 110 after the die casting process can obtain the glass shell 100 with curvature through the heat bending treatment, improve the smoothness of the glass shell 100, and further expand the application scenarios. In an embodiment of the present application, the temperature of the heat bending treatment is 165-205°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, and the morphology and size of the surface texture will not be damaged. It can be understood that the temperature of the heat bending treatment is higher than the strain point of the etched glass 110, so that the etched glass 110 has a certain softening performance 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 an embodiment of the present application, the temperature of the heat bending treatment can be 680-720°C, which is higher than the strain point of the etched glass 110 and 165-205°C lower than the softening point of the etched glass 110, so that the heat bending treatment can be carried out without affecting the surface texture. Specifically, the temperature of the heat bending treatment can be but is not limited to 680°C, 685°C, 690°C, 695°C, 700°C, 703°C, 705°C, 710°C, 715°C or 720°C. In an embodiment of the present application, the pressure of the heat bending treatment is 0.3-0.5MPa, so that the heat bending treatment can be carried out without affecting the surface texture. Specifically, the pressure of the heat bending treatment can be but is not limited to 0.3MPa, 0.35MPa, 0.38MPa, 0.4MPa, 0.43MPa, 0.45MPa, 0.48MPa or 0.5MPa. In an embodiment of the present application, the time of the heat bending treatment is 45s-5min, so that the heat bending treatment can be carried out 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 an embodiment of the present application, after the heat bending treatment, processing (such as engraving) and polishing treatment can be carried out, so that the etched glass 110 after the heat bending treatment is further shaped and surface treated, and the smoothness of the shape of the glass shell 100 is improved. In an embodiment of the present application, the glass shell 100 includes a glass base 11, a plurality of first recesses 12 and a plurality of second recesses 13, the glass base 11 includes a first surface 111, the second recesses 13 are arranged on the first surface 111, the second recesses 13 have a peripheral wall 131, part of the first recesses 12 are arranged on the first surface 111, and part of the first recesses 12 are arranged on the peripheral wall 131; the glass base 11 includes a main body and an extension arranged at the edge of the main body, and the extension is bent towards the main body.The first recesses 12 are distributed in the main body of the glass base 11, and can also be distributed in the extension of the glass base 11, and can also be distributed in the main body and the extension of the glass base 11. The second recesses 13 are distributed in the main body of the glass base 11, and can also be distributed in the extension of the glass base 11, and can also be distributed in the main body and the extension of the glass base 11.

[0045] Please refer to Figure 5 The preparation method flow chart of the glass shell provided in another embodiment of the application comprises the following steps.

[0046] S301: performing an etching process on the glass substrate to form a plurality of first recesses on the surface of the glass substrate, and obtaining an etched glass.

[0047] S302: performing a die casting process on the etched glass to form a plurality of second recesses on the surface of the etched glass having the first recesses, and part of the first recesses are arranged on the peripheral wall of the second recesses.

[0048] S303: obtaining the glass shell after the strengthening treatment.

[0049] The steps S301 and S302 can refer to the description in the steps S101 and S102, and will not be described here.

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

[0051] Please refer to Figure 6A flow chart of a method for preparing the glass shell according to another embodiment of the present application is provided, which comprises:

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

[0053] S402: performing a die casting process on the etched glass to form a plurality of second recesses on the surface of the etched glass having the first recesses, and part of the first recesses are arranged on the peripheral wall of the second recesses.

[0054] S403: obtaining the glass shell after heat bending and strengthening treatment.

[0055] The etching process, the die casting process, the heat bending treatment and the strengthening treatment on the etched glass 110 are beneficial to obtain the glass shell 100 with excellent performance and rich appearance effect, wherein the heat bending treatment can refer to the description in S203 above, and the strengthening treatment can refer to the description in S303 above, which will not be described here again.

[0056] The present application provides a glass shell 100, which comprises a glass base body 11, a plurality of first recesses 12 and a plurality of second recesses 13, the glass base body 11 comprises a first surface 111, the second recesses 13 are arranged on the first surface 111, part of the first recesses 12 are arranged on the first surface 111, and part of the first recesses 12 are arranged on the peripheral wall 131 of the second recesses 13. The glass shell 100 can be prepared by the preparation method in any of the above embodiments. Wherein, Figure 3 An exemplary cross-sectional schematic view of the glass shell 100 provided by the present application is shown. The first recesses 12 on the surface of the glass shell 100 are etching textures, the first recesses 12 are small, invisible to the naked eye and relatively smooth, and the whole presents a fine sand effect; the second recesses 13 are die casting textures, the second recesses 13 are relatively large, so that the first recesses 12 can be arranged on the peripheral wall 131 thereof, so that more obvious and intuitive texture vision can be brought, and the superposition of the first recesses 12 and the second recesses 13 improves the sense of hierarchy and stereoscopic of the texture effect of the glass shell 100, and enriches the appearance effect thereof.

[0057] In an embodiment of the present application, the peripheral wall 131 of the second recess 13 comprises a side wall; at this time, the first recess 12 can be arranged on the side wall of the second recess 13. In another embodiment of the present application, the peripheral wall 131 of the second recess 13 comprises a side wall and a bottom wall connected with the side wall; at this time, the first recess 12 can be arranged on at least one of the side wall and the bottom wall.

[0058] In an embodiment of the present application, the first recess 12 has at least one light-reflecting surface, so that the glass shell 100 has a sparkling effect. All the first recesses 12 can bring a sparkling sand appearance, greatly enriching the appearance of the glass shell 100. In an embodiment of the present application, the first recess 12 is arranged on the first surface 111, and the acute angle between the light-reflecting surface and the first surface 111 is 10° to 45°, so as to further improve the reflection intensity of light and achieve a more obvious and dynamic sparkling sand visual effect. Specifically, the acute angle between the light-reflecting surface and the first surface 111 can be, but is 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 recess 12 is arranged on the peripheral wall 131 of the second recess 13, the acute angle between the light-reflecting surface and the peripheral wall 131 is 10° to 45°, so as to further improve the reflection intensity of light and achieve a more obvious and dynamic sparkling sand visual effect. Specifically, the acute angle between the light-reflecting 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 an embodiment of the present application, the depth of the first recess 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 recess 12 is good. In an embodiment of the present application, the maximum radial dimension of the first recess 12 is 40 μm to 100 μm, so that the glass shell 100 has a better fine sand effect and smooth touch. In an embodiment of the present application, at least part of the first recess 12 is distributed in a pattern, so that the glass shell 100 also has a macroscopic patterned visual effect, enriching its appearance. In an embodiment of the present application, the spacing between adjacent first recesses 12 can be less than or equal to 10 μm, so as to improve the fine sand effect of the surface of the glass shell 100, and when the first recess 12 has a light-reflecting surface, the sparkling effect of the glass shell 100 is more concentrated and obvious. In the present application, the cross section of the first recess 12 in the thickness direction of the glass shell 100 can be a triangle, a quadrilateral, a semicircular arc surface, an irregular shape, etc.

[0060] In an embodiment of the present application, the depth of the second recess 13 is 20-50 μm, which can improve the surface texture of the glass shell 100 and the visual effect, and achieve a more obvious texture effect and a richer appearance. Specifically, the depth of the second recess 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 an embodiment of the present application, the depth of the second recess 13 is 30-50 μm, which can further improve the three-dimensionality and the texture of the texture effect of the glass shell 100. In an embodiment of the present application, the maximum radial dimension of the second recess 13 is greater than or equal to 200 μm, which further improves the three-dimensionality and the texture of the texture effect of the glass shell 100. The maximum radial dimension of the second recess 13 is the maximum dimension of the orthographic projection of the second recess 13 on the first surface 111. Specifically, the maximum radial dimension of the second recess 13 can be, but is not limited to, greater than 200 μm, greater than 350 μm, greater than 450 μm, greater than 500 μm, greater than 680 μm, greater than 730 μm, greater than 800 μm, greater than 900 μm, greater than 1000 μm, etc. In an embodiment of the present application, the extension direction of the second recess 13 is linear or curved, which can further improve the appearance effect of the glass shell 100. In an embodiment of the present application, the extension direction of the second recess 13 is wavy, so that the surface of the glass shell 100 has a wavy pattern, which can produce a visual effect similar to flowing water. Meanwhile, the first recess 12 can fill the effect of the second recess 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 recesses 13 can be selected as needed. In an embodiment of the present application, the spacing between adjacent second recesses 13 varies, which can improve the flow of the texture effect on the surface of the glass shell 100 and enrich the appearance thereof. Please refer to Figure 7 FIG. 6 is a schematic view of the appearance of the glass shell according to an embodiment of the present application, in which the second recess 13 on the surface of the glass shell 100 is wavy, the first recess 12 has at least one reflective surface, the glass shell 100 as a whole has a sparkling fine sand effect, and has a strong appearance level and three-dimensionality, and has the texture of the second recess 13. In the present application, the cross section of the second recess 13 in the thickness direction of the glass shell 100 can be triangular, quadrangular, semicircular, irregular, etc. For example, the cross section of the second recess 13 can have a flat surface or a curved surface.

[0061] In an 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 can be, but is not limited to, 70% or more, 75% or more, 78% or more, 80% or more, 82% or more, 85% or more, etc. In an 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 can be, but is not limited to, 5% or less, 10% or less, 15% or less, 20% or less, 25% or less, etc.

[0062] In the present application, the thickness and shape of the glass shell 100 can be selected according to the application needs. In an embodiment of the present application, the thickness of the glass shell 100 can be 0.5mm to 0.7mm, which not only guarantees the mechanical properties of the glass shell 100, but also does not excessively increase the weight and thickness, which is beneficial to its use. The glass shell 100 can be planar or curved. In an embodiment of the present application, the glass base body 11 includes a main body portion and an extension portion provided at the edge of the main body portion, the extension portion is bent towards the main body portion, so that the glass shell 100 is curved.

[0063] In an embodiment of the present application, the glass shell 100 can further include a decorative layer provided on the surface opposite to the first surface 111. The decorative layer can further enrich the appearance of the glass shell 100. Specifically, the decorative layer can include, but is not limited to, a color layer, an optical film layer, etc.; for example, the color layer and the optical film layer can be formed by coating, deposition, lamination, etc.

[0064] The present application provides an electronic device 200 including the glass shell 100 in any of the above embodiments. It can be understood that the electronic device 200 can be, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a watch, an MP3, an MP4, a GPS navigator, a digital camera, etc. Please refer to Figure 8 The structure schematic diagram of the electronic device provided in an embodiment of the present application is shown, wherein the electronic device 200 includes the glass shell 100. The glass shell 100 makes the electronic device 200 have a rich appearance effect. In an embodiment of the present application, the electronic device 200 further includes a display device connected with the glass shell 100, so as to expand the use scenarios of the electronic device 200.

[0065] The above provides a detailed introduction to the content of the embodiments of the present application, and the principles and embodiments of the present application are described and explained in this paper. The above description 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, the specific embodiments and application range will be changed, and the above description should not be understood as a limitation of the present application.

Claims

1. A method of producing a glass shell, characterized by, The method comprises: performing an etching process on a glass substrate to form a plurality of first recesses on a surface of the glass substrate, to obtain an etched glass; placing the etched glass in a mold, the mold being provided with a raised pattern on a surface facing the etched glass having the first recesses, and forming a plurality of second recesses on the surface of the etched glass having the first recesses through a die casting process, to obtain a glass shell; wherein part of the first recesses are arranged on the peripheral wall of the second recesses, the raised pattern is complementary to the second recesses, and the height of the raised pattern is 20 μm to 50 μm.

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

3. The production method according to claim 1 or 2, characterized by, 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 production method according to claim 1, wherein The die casting process further comprises a heat bending treatment, the temperature of the heat bending treatment is 680 °C to 720 °C, and the pressure of the heat bending treatment is 0.3 MPa to 0.5 MPa.

5. A glass housing, characterized by, The glass shell is prepared by the preparation method of any one of claims 1-4, and comprises a glass matrix, a plurality of first recesses, and a plurality of second recesses, the glass matrix comprises a first surface, the second recesses are arranged on the first surface, part of the first recesses are arranged on the first surface, and part of the first recesses are arranged on the peripheral wall of the second recesses, and the depth of the second recesses is 20 μm to 50 μm.

6. The glass enclosure of claim 5, wherein, The first recesses have at least one light-reflecting surface; When the first recesses are arranged on the first surface, the acute angle between the light-reflecting surface and the first surface is 10° to 45°; When the first recesses are arranged on the peripheral wall, the acute angle between the light-reflecting surface and the peripheral wall is 10° to 45°.

7. The glass enclosure of claim 5, wherein, The depth of the first recesses is 6 μm to 15 μm, and the maximum radial dimension of the first recesses is 40 μm to 100 μm; The maximum radial dimension of the second recesses is greater than or equal to 200 μm.

8. The glass enclosure of claim 5, 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.

9. An electronic device, comprising: The glass shell prepared by the preparation method of any one of claims 1-4 or the glass shell of any one of claims 5-8.

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