Glass shell, preparation method thereof and electronic equipment

Abstract

The invention relates to the technical field of electronic equipment, in particular to a glass shell, a preparation method thereof and electronic equipment. The glass shell comprises a boss and a shell bottom surface surrounding the boss, the boss comprises a top surface and a slope, the slope is a curved surface, one end of the slope is smoothly connected with the top surface, and the other end of the slope is smoothly connected with the shell bottom surface; the shell bottom surface and the slope are integrally formed through acid etching, the roughness Ra1 of the shell bottom surface meets the condition that Ra1 is smaller than or equal to 0.2 mu m, and the roughness Ra2 of the slope meets the condition that Ra2 is smaller than or equal to 3.0 mu m. And the glass shell is good in appearance modeling.

Description

Technical Field

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

[0002] As users have higher and higher requirements for camera components of electronic devices, the size of camera components is getting larger and larger. Considering that the overall thickness of electronic devices should not be too large, more manufacturers choose to increase the thickness of the camera component area, so the shell needs to have a boss that can accommodate the camera component.

[0003] Currently, bosses are usually formed on the shell through CNC processing, but this modeling effect produces obvious knife marks on the surface, affecting the appearance. Summary of the invention

[0004] Based on this, the present application provides a glass housing and a preparation method thereof, and an electronic device.

[0005] In a first aspect, the present application provides a glass housing, and its technical solution is as follows:

[0006] A glass shell comprises a boss and a shell bottom surface surrounding the boss, wherein the boss comprises a top surface and a slope, wherein the slope is a curved surface, one end of which is smoothly connected to the top surface, and the other end of which is smoothly connected to the shell bottom surface;

[0007] The shell bottom surface and the slope are integrally formed by acid etching, and the roughness Ra1 of the shell bottom surface satisfies: Ra1≤0.2 μm, and the roughness Ra2 of the slope satisfies: Ra2≤3.0 μm.

[0008] The second aspect of the present application provides a method for preparing a glass shell, and the technical solution thereof is as follows:

[0009] A method for preparing a glass shell comprises the following steps:

[0010] Affixing an acid-resistant protective film to a preset position of the flat glass, wherein the preset position corresponds to the top surface of the boss of the glass shell;

[0011] The flat glass with the acid-resistant protective film attached thereto is rotated in the plane where it is located, and an acid etching liquid is sprayed onto the flat glass during the rotation process, and a relatively smaller one of two angles formed by the spray route of the acid etching liquid and the plane where the flat glass is located is defined as a spray angle, and the acid etching liquid is sprayed within a spray angle range of 0° to 15°, and a curved slope of the boss with a roughness Ra1 satisfying Ra1≤0.2μm and a roughness Ra2 satisfying Ra2≤3.0μm is integrally etched to form a curved slope surrounding the boss, one end of the slope is smoothly connected to the top surface of the boss, and the other end is smoothly connected to the shell bottom surface;

[0012] The acid-resistant protective film is removed.

[0013] The third aspect of the present application provides an electronic device, and its technical solution is as follows:

[0014] An electronic device comprises a display module, a circuit board and the glass housing as described above or a glass housing prepared by the preparation method as described above;

[0015] The display module and the glass shell are enclosed to form a receiving space;

[0016] The circuit board is located in the accommodating space.

[0017] This application has the following beneficial effects:

[0018] The glass shell of the present application is formed integrally with the shell bottom surface and the slope of the boss by acid etching, which can avoid the generation of CNC knife marks, and the roughness Ra1 of the shell bottom surface satisfies: Ra1≤0.2μm, and the roughness Ra2 of the slope satisfies: Ra2≤3.0μm. The formed surface is smooth and has a good appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application and to more completely understand the present application and its beneficial effects, the following is a brief introduction to the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0020] Figure 1 is a schematic structural diagram of a housing according to an embodiment;

[0021] Figure 2 for Figure 1 A schematic diagram of the structure of the A-A' section;

[0022] Figure 3 is a schematic structural diagram of a housing according to another embodiment;

[0023] Figure 4 A schematic diagram of a process for preparing a shell according to an embodiment;

[0024] Figure 5 A schematic diagram of attaching an acid-resistant protective film to a flat glass according to an embodiment;

[0025] Figure 6 is a schematic structural diagram of a flat glass according to an embodiment;

[0026] Figure 7 A schematic diagram of spin etching according to an embodiment;

[0027] Figure 8 A schematic diagram of the structure of an intermediate product after spin etching according to an embodiment. DETAILED DESCRIPTION

[0028] The present application will be further described in detail below in conjunction with specific embodiments. The present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thoroughly understood.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0030] the term

[0031] Unless otherwise specified or there is a contradiction, the terms and phrases used in this application have the following meanings:

[0032] In this application, "multiple" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In this application, "several" means at least one, such as one, two, etc., unless otherwise clearly and specifically defined.

[0033] In this application, "optionally", "optional" and "optional" refer to optional, that is, to any one of the two parallel schemes of "yes" or "no". If multiple "options" appear in a technical solution, unless otherwise specified and there is no contradiction or mutual restriction, each "optional" is independent.

[0034] In this application, in the "first aspect", "second aspect", "third aspect", "fourth aspect", etc., the terms "first", "second", "third", "fourth", etc. are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or quantity, nor can they be understood as implicitly indicating the importance or quantity of the indicated technical features. Moreover, "first", "second", "third", "fourth", etc. only serve the purpose of non-exhaustive enumeration and description, and it should be understood that they do not constitute a closed limitation on quantity.

[0035] In the present application, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] In the present application, when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time. It should also be understood that when explaining the connection relationship or positional relationship of elements, although not explicitly described, the connection relationship and positional relationship are interpreted as including an error range, which should be within the acceptable deviation range of a specific value determined by a person skilled in the art.

[0037] The first aspect of the present application provides a glass housing. In one embodiment, see Figure 1 and Figure 2 The glass housing 100 includes a boss 11 and a shell bottom surface 12 surrounding the boss 11. The boss 11 includes a top surface 111 and a slope 112. The boss 11 protrudes from the shell bottom surface 12. There is a height difference between the top surface 111 of the boss 11 and the shell bottom surface 12. The slope 112 is a curved surface. One end of the slope 112 is smoothly connected to the top surface 11, and the other end is smoothly connected to the shell bottom surface 12, so as to achieve a smooth transition between the top surface 111 of the boss 11 and the shell bottom surface 21.

[0038] The shell bottom surface 12 and the slope 112 are integrally formed by acid etching, and the roughness Ra1 of the shell bottom surface 12 satisfies: Ra1≤0.2μm, and the roughness Ra2 of the slope 112 satisfies: Ra2≤3.0μm. It can be understood that the roughness Ra1 of the shell bottom surface 12 includes but is not limited to 0.05μm, 0.1μm, 0.15μm, and 0.2μm. The roughness Ra2 of the slope 112 includes but is not limited to 0.05μm, 0.1μm, 0.2μm, 0.5μm, 1μm, 1.5μm, 2μm, 2.5μm, and 3μm.

[0039] The glass shell of this embodiment is formed integrally with the shell bottom surface and the slope of the boss by acid etching, which can avoid the generation of CNC knife marks, and the roughness Ra1 of the shell bottom surface satisfies: Ra1≤0.2μm, and the roughness Ra2 of the slope satisfies: Ra2≤3.0μm, so the formed surface is smooth and has a good appearance.

[0040] In this embodiment, the slope 112 is first steep and then gentle from the top surface 111 to the shell bottom surface 12. In this case, the shape is beautiful.

[0041] The protruding direction of the boss 11 is defined as the vertical direction, and the direction perpendicular to the vertical direction is defined as the horizontal direction. Optionally, the distance in the vertical direction from one end of the slope connected to the top surface to one end connected to the bottom surface of the shell is 1mm~1.5mm. For example, the vertical distance is 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm. Among them, the vertical distance is the protruding height of the boss 11, that is, there is a height difference between the top surface 111 and the bottom surface 12 of the shell. Optionally, the distance in the horizontal direction from one end of the slope connected to the top surface to one end connected to the bottom surface of the shell is 1.5mm~1.8mm. For example, the horizontal distance is 1.5mm, 1.6mm, 1.7mm, 1.8mm.

[0042] The surface where the shell bottom surface 12 is located is defined as the front surface of the glass shell 100, and the surface opposite to the front surface is the back surface of the glass shell 100. Optionally, the shortest distance between the shell bottom surface 12 and the back surface of the glass shell 100 is 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, or 1.5 mm.

[0043] In this embodiment, the shell bottom surface 12 is a plane. In other embodiments, the edge of the shell bottom surface away from the boss end is a curved surface. Figure 3 The glass shell 200 includes a boss 21 and a shell bottom surface 22 surrounding the boss 21. The edge of the shell bottom surface 22 away from one end of the boss 21 is a curved surface. The boss 21 includes a top surface 211 and a slope 212. The boss 21 protrudes from the shell bottom surface 22. There is a height difference between the top surface 211 of the boss 21 and the shell bottom surface 22. The slope 212 is a curved surface. One end of the slope 212 is smoothly connected to the top surface 21, and the other end is smoothly connected to the shell bottom surface 22, so as to achieve a smooth transition between the top surface 211 of the boss 21 and the shell bottom surface 22. The shell bottom surface 22 and the slope 212 are integrally formed by acid etching, and the roughness Ra1 of the shell bottom surface 22 satisfies: Ra1≤0.2μm, and the roughness Ra2 of the slope 212 satisfies: Ra2≤3.0μm.

[0044] The glass shell has a beautiful shape, provides a new idea for the differentiated design of the shell appearance and the diversification of CMF, and has a high degree of refinement, making the product highly competitive.

[0045] The second aspect of the present application provides a method for preparing a glass housing. In one embodiment, see Figure 4 , the preparation method of the glass shell comprises the following steps:

[0046] S10, attaching an acid-resistant protective film to a preset position of the flat glass.

[0047] It is understandable that before attaching the acid-resistant protective film, the large glass raw material can be cut, cleaned and dried to prepare the flat glass. The cutting can be done with a cutter wheel cutter, and the cleaning can be done in an ultrasonic cleaning machine, for example, in a 12-slot ultrasonic cleaning machine.

[0048] The above-mentioned preset position corresponds to the top surface of the boss of the glass shell. In this embodiment, the flat glass is subsequently etched with acid, and an acid-resistant protective film is attached to the position corresponding to the top surface of the boss of the glass shell to protect the glass at this position from being etched. In the subsequent acid etching process of the flat glass, the position of the flat glass not protected by the acid-resistant protective film is etched to form the slope and the bottom surface of the glass shell in one piece. Among them, the acid-resistant protective film can be a protective film of an acid-resistant etching solution commonly used in the art, which is not limited here.

[0049] In this embodiment, in order to integrally form the slope and the bottom surface of the glass shell by acid etching, and to ensure that the slope is a curved surface, one end of which is smoothly connected to the top surface of the boss of the glass shell, and the other end of which is smoothly connected to the bottom surface of the shell, the plane glass needs to be rotated during the acid etching process. In order to prevent the acid-resistant protective film from falling off or warping during the rotation etching process and damaging the top surface of the boss, optionally, after attaching the acid-resistant protective film and before rotating the plane glass, the following steps are further included:

[0050] The flat glass with the acid-resistant protective film attached thereto is subjected to a degassing treatment to remove bubbles between the acid-resistant protective film and the flat glass.

[0051] Through degassing treatment, residual bubbles are removed and the adhesion between the acid-resistant protective film and the flat glass is enhanced.

[0052] Optionally, the temperature of the degassing treatment is 50°C to 70°C. For example, the temperature of the degassing treatment is 50°C, 60°C, or 70°C. The time of the degassing treatment is 5min to 20min. For example, the time of the degassing treatment is 5min, 10min, or 20min. It is understood that the degassing treatment can be performed in a high-pressure degassing machine. Optionally, the degassing pressure of the degassing treatment is 10kg / cm 2 ~15kg / cm 2 For example, the degassing pressure is 10kg / cm 2 , 11kg / cm 2 , 12kg / cm 2 , 13kg / cm 2 、14kg / cm 2 、15kg / cm 2 .

[0053] Optionally, the flat glass includes several sub-processing units, and the size of each sub-processing unit corresponds to the size of the glass shell. The above method can obtain a glass shell through one processing. At this time, before attaching the acid-resistant protective film, the large glass raw material is cut into small pieces according to the size of a glass shell by a cutter wheel cutter. At the same time, the above method also allows multiple glass shells to be obtained at the same time through one processing to improve the processing efficiency. At this time, before attaching the acid-resistant protective film, the large glass raw material is cut into middle pieces corresponding to the sizes of multiple glass shells by a cutter wheel cutter. At this time, target positioning can be added to the middle piece according to the corresponding size of the glass shell, so that after acid etching, the middle piece can be cut into small pieces. It can be understood that the increase in target positioning can be completed using the ultraviolet picosecond laser equipment in the laser engraving machine, and the power of the equipment can be 25kW~35kW. For example, the power is 25kW, 30kW, and 35kW.

[0054] When the flat glass includes a plurality of sub-processing units, attaching the acid-resistant protective film at a preset position of the flat glass includes the following steps: attaching the acid-resistant protective film at a position corresponding to the top surface of the boss of the glass shell in each sub-processing unit.

[0055] See also Figure 5 In this embodiment, the flat glass 10 is 650 mm long and 550 mm wide, and includes a plurality of sub-processing units 10A. The size of each sub-processing unit 10A corresponds to the size of the glass shell. An acid-resistant protective film 20 is attached to the top surface of the boss of the glass shell in each sub-processing unit 10A.

[0056] In addition, if CNC is used to process flat glass to obtain a glass shell with a boss, generally speaking, in order to reduce time, a large knife wheel will be used for rough processing in the first stage, and a small knife wheel will be used for fine processing in the second stage. After fine processing, in order to eliminate knife marks and grinding wheel lines, a polishing process needs to be added, which causes a large loss of raw materials. Therefore, the industry needs to use glass with a thickness of more than 2.5mm as raw material, and the higher the thickness of the glass, the higher the cost, that is, the CNC processing method has a high cost problem. However, the glass shell with a boss is obtained by acid etching flat glass in this embodiment, and the raw material loss is small. A single piece of glass with a thickness of 2mm~2.5mm can be used as a raw material, and the cost can be saved by up to about 30%. Optionally, the flat glass is a single piece of glass with a thickness of 2mm~2.5mm. For example, 2mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, 2.5mm.

[0057] In order to further improve the processing efficiency, the method of this embodiment can process two pieces of glass at the same time. Figure 6The plane glass 10 includes a first plane glass 01, a second plane glass 02 and a spacer film 03, wherein the first plane glass 01 includes a front side and a back side opposite to each other, the second plane glass 02 includes a front side and a back side opposite to each other, and the spacer film 03 connects the back side of the first plane glass 01 and the back side of the second plane glass 02. At this time, attaching the acid-resistant protective film to a preset position of the plane glass includes the following steps: attaching the acid-resistant protective film to a preset position of the front side of the first plane glass; and attaching the acid-resistant protective film to a preset position of the front side of the second plane glass.

[0058] It can be understood that the length and width of the first plane glass and the second plane glass are the same so as to be processed simultaneously.

[0059] Optionally, the thickness of the spacer film is 0.05 mm to 0.2 mm, for example, the thickness of the spacer film is 0.05 mm, 0.1 mm, 0.15 mm, or 0.2 mm. In this embodiment, the spacer film is cellophane.

[0060] Optionally, the thickness of the first flat glass is 2 mm to 2.5 mm. For example, the thickness of the first flat glass is 2 mm, 2.1 mm, 2.2 mm, 2.3 mm, 2.4 mm, or 2.5 mm. In this case, the thickness of the first flat glass is relatively thin, and the cost is relatively low.

[0061] Optionally, the thickness of the second flat glass is 2 mm to 2.5 mm. For example, the thickness of the second flat glass is 2 mm, 2.1 mm, 2.2 mm, 2.3 mm, 2.4 mm, or 2.5 mm. In this case, the thickness of the second flat glass is relatively thin, and the cost is relatively low.

[0062] When the flat glass includes a first flat glass and a second flat glass, in order to fix the first flat glass and the second flat glass, optionally, before rotating the flat glass, the following step is further included: gluing an edge of the first flat glass to an edge of the second flat glass.

[0063] Optionally, bonding the edge of the first plane glass to the edge of the second plane glass comprises the following steps: arranging at least one circle of first adhesive at the indented position of the edge line of the first plane glass and / or the second plane glass; aligning and bonding the first plane glass and the second plane glass on which the first adhesive is arranged; curing the first adhesive to obtain a first cured adhesive; intermittently arranging a second adhesive at a position other than the first cured adhesive between the first plane glass and the second plane glass, and curing the second adhesive to obtain a second cured adhesive.

[0064] Optionally, the shortest inward retraction distance of the first adhesive relative to the edge of the first plane glass or the second plane glass is 1 mm to 2 mm. Optionally, the width of the first adhesive is 3 mm to 5 mm. The width of the first adhesive refers to the size of the first adhesive in the direction from the center of the first plane glass to the edge of the first plane glass, or the size of the first adhesive in the direction from the center of the second plane glass to the edge of the second plane glass.

[0065] Optionally, the second adhesive is arranged in a dispensing manner, for example, uniform dispensing.

[0066] Optionally, the first adhesive is selected from a heat-curing adhesive or a pressure-sensitive adhesive. In this embodiment, the first adhesive is provided by a double-sided adhesive, which includes a substrate and a pressure-sensitive adhesive and a release paper located on both sides of the substrate. Optionally, the second adhesive is an ultraviolet (UV) curing adhesive. For example, the glue model is UVF-896. In this embodiment, the energy used in the UV oven is 800mj / cm 2 ~1200mj / cm 2 (For example, the energy is 800mj / cm 2 、1000mj / cm 2 、1200mj / cm 2 ) to cure the UV glue, and the curing time is 3min~5min. It should be noted that the UV glue must be completely cured to avoid the acid etching liquid from penetrating during the acid etching process, which may cause abnormal appearance on the back of the glass shell.

[0067] S20, see Figure 7 , the flat glass 10 with the acid-resistant protective film is rotated in the plane where it is located, and the acid etching liquid is sprayed on the flat glass 10 during the rotation process.

[0068] The spray angle θ is defined as the smaller of the two angles formed by the spray path of the acid etching liquid and the plane where the flat glass 10 is located. The acid etching liquid is sprayed within the spray angle θ range of 0°~15°. Please refer to Figure 8 A shell bottom surface 12 with a roughness Ra1 satisfying: Ra1≤0.2μm and a curved slope 112 with a roughness Ra2 satisfying: Ra2≤3μm are integrally etched around the boss. One end of the slope 112 is smoothly connected to the top surface of the boss 11, and the other end is smoothly connected to the shell bottom surface 12.

[0069] It can be understood that when the spray angle θ is 0°, it means that the spray path of the acid etching solution coincides with the plane where the flat glass 10 is located. The spray angle θ can be 0°, 1°, 2°, 3°, 4°, 5°, 6°, 7°, 8°, 9°, 10°, 11°, 12°, 13°, 14°, 15°.

[0070] The acid etching liquid can be sprayed through the nozzle. Optionally, the acid etching liquid is uniformly sprayed within a spray angle θ range of 0° to 15°. The uniform spraying of the acid etching liquid can be achieved by controlling the position of the nozzle.

[0071] The flat glass 10 can be inserted into a special etching rack, and the rotation of the flat glass can be controlled by controlling the rotation of the special etching rack. The special etching rack with the flat glass 10 can be loaded into an etching chamber pre-equipped with a nozzle through a loading and unloading system, so that the flat glass 10 can be etched by spraying acid etching liquid while rotating. Figure 7 In the illustrated embodiment, the plane where the flat glass 10 is located is parallel to the direction of gravity, and the flat glass 10 rotates around its geometric center in the plane where it is located. At this time, the nozzles 30 are arranged on the top and side of the flat glass.

[0072] Optionally, the flat glass rotates around its geometric center in the plane where it is located, and the maximum displacement per second is 7 mm ± 0.5 mm. The maximum displacement per second refers to the linear distance moved by a point with the largest linear distance moved in one second.

[0073] Optionally, the spray pressure of the nozzle is set to 35Pa±3Pa, and the shortest spray path length of the acid etching solution is 300±50mm. For example, the spray pressure of the nozzle is 32Pa, 33Pa, 34Pa, 35Pa, 36Pa, 37Pa, 38Pa. The shortest spray path length of the acid etching solution is 250mm, 280mm, 300mm, 330mm, 350mm.

[0074] Optionally, the acid etching solution includes an acid agent and water, and optionally, the mass percentage of the acid agent in the acid etching solution is 30% to 50%. For example, the mass percentage is 30%, 40%, and 50%. Optionally, the acid agent includes at least one of HF, H2SO4, HCl, and HNO3. Optionally, the acid agent includes HF, H2SO4, and HCl, and the mass ratio of HF, H2SO4, and HCl is (5 to 7): (2 to 4): 1. For example, the mass ratio of HF, H2SO4, and HCl is 5:4:1, 6:3:1, and 7:2:1.

[0075] Optionally, the ambient temperature of the etching of the flat glass by the acid etching solution is 35°C±1°C.

[0076] Optionally, the etching rate of the flat glass under the action of the acid etching solution is 0.0045 mm / min±0.0005 mm / min.

[0077] Optionally, the etching time of the flat glass under the action of the acid etching solution is 4h±1h. For example, the etching time is 3h, 3.5h, 4h, 4.5h, or 5h.

[0078] It can be understood that the atomization degree of the acid etching solution after being sprayed from the nozzle can be controlled by controlling the frequency of the motor. Optionally, the frequency of the motor is 35HZ±5HZ.

[0079] S30. Remove the acid-resistant protective film.

[0080] After etching, the acid-resistant protective film is removed, and a boss including the top surface and the slope and the shell bottom surface surrounding the boss can be obtained.

[0081] When the flat glass includes a plurality of sub-processing units, and includes a first flat glass and a second flat glass, the method further includes the steps of slicing the first flat glass and the second flat glass, and cutting the lasing cracks of the first flat glass and the second flat glass into a plurality of small pieces along the target. It can be understood that the slicing can be performed in a flat cleaning machine, and the intermediate product can be cleaned while slicing.

[0082] In the case where the bottom surface of the shell is flat, the glass shell can be prepared according to the conventional process in the art, for example, the conventional process includes: inspecting the small piece, CNC machining the back to form a cavity, SPM (sulfuric acid and hydrogen peroxide mixed cleaning), back polishing, front polishing, inspection, strengthening, re-polishing, etc.

[0083] In the case where the bottom surface of the shell is a curved surface, the glass shell can be obtained by combining the conventional process in the art with the heat bending process. For example, after the cavity is formed by CNC processing on the back, a heat bending forming process is added to heat bend the edge of the bottom surface of the shell away from the boss into a curved surface.

[0084] The above method uses an acid etching liquid sprayed at a specific angle to etch and thin the flat glass during the rotation of the flat glass, and controls the above etching parameters, so as to obtain a shell bottom surface surrounding the boss and having a roughness Ra1 that satisfies: Ra≤0.2μm, and a roughness Ra2 that satisfies: Ra2≤3.0μm, and one end is smoothly connected to the top surface of the boss, and the other end is smoothly connected to the shell bottom surface, and the surface is a curved surface, and the direction from the top surface to the shell bottom surface is steep at first and then gentle. In addition, the slope of the shell glass obtained by the above method meets the following conditions: 1) The vertical distance from one end of the slope connecting the top surface to one end connecting the shell bottom surface is 1mm~1.5mm. 2) The horizontal distance from one end of the slope connecting the top surface to one end connecting the shell bottom surface is 1.5mm~1.8mm. In addition, the shortest distance between the shell bottom surface 12 of the shell glass obtained by the above method and the back of the glass shell 100 is 0.5mm~1.5mm. Beautiful shape and appearance advantage.

[0085] The above method provides a new idea for the differentiated design of the shell appearance and the diversification of CMF, improves the appearance expression of the product, and can also use thinner glass for production, reducing processing costs. At the same time, the shell glass formed is also more refined and has greater product competitiveness.

[0086] A third aspect of the present application provides an electronic device. In one embodiment, the electronic device includes a display module, a circuit board, and the glass housing as described above or the glass housing prepared by the preparation method as described above;

[0087] The display module and the glass shell are enclosed to form a receiving space;

[0088] The circuit board is located in the accommodating space.

[0089] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0090] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A glass housing, characterized in that: It includes a boss and a shell bottom surface surrounding the boss, the boss includes a top surface and a slope, the slope is a curved surface, one end of which is smoothly connected to the top surface, and the other end of which is smoothly connected to the shell bottom surface; The shell bottom surface and the slope are integrally formed by acid etching, and the roughness Ra1 of the shell bottom surface satisfies: Ra1≤0.2 μm, and the roughness Ra2 of the slope satisfies: Ra2≤3.0 μm.

2. The glass housing according to claim 1, characterized in that: From the top surface to the shell bottom surface, the slope is steep at first and then becomes gentle.

3. The glass housing according to any one of claims 1 to 2, characterized in that: Includes at least one of the following features: 1) The protruding direction of the boss is defined as a vertical direction, and the distance in the vertical direction from the end of the slope connected to the top surface to the end connected to the bottom surface of the shell is 1 mm to 1.5 mm; 2) The protruding direction of the boss is defined as the vertical direction, the direction perpendicular to the vertical direction is defined as the horizontal direction, and the distance in the horizontal direction from the end of the slope connected to the top surface to the end connected to the bottom surface of the shell is 1.5 mm to 1.8 mm; 3) The surface where the shell bottom is located is defined as the front surface of the glass shell, and the surface opposite to the front surface is defined as the back surface of the glass shell. The shortest distance between the shell bottom and the back surface is 0.5 mm to 1.5 mm.

4. A method for preparing a glass shell, characterized in that: The following steps are involved: Affixing an acid-resistant protective film to a preset position of the flat glass, wherein the preset position corresponds to the top surface of the boss of the glass shell; The flat glass with the acid-resistant protective film attached thereto is rotated in the plane where it is located, and an acid etching liquid is sprayed onto the flat glass during the rotation process, and a relatively smaller one of two angles formed by the spray route of the acid etching liquid and the plane where the flat glass is located is defined as a spray angle, and the acid etching liquid is sprayed within a spray angle range of 0° to 15°, and a curved slope of the boss with a roughness Ra1 satisfying Ra1≤0.2μm and a roughness Ra2 satisfying Ra2≤3μm is integrally etched to form a curved slope surrounding the boss, one end of the slope is smoothly connected to the top surface of the boss, and the other end is smoothly connected to the shell bottom surface; The acid-resistant protective film is removed.

5. The method for preparing a glass casing according to claim 4, characterized in that: The acid etching solution is sprayed uniformly within a spray angle range of 0° to 15°.

6. The method for preparing a glass casing according to claim 4, characterized in that: The flat glass rotates around its geometric center with a maximum displacement of 7 mm ± 0.5 mm per second.

7. The method for preparing a glass casing according to claim 4, characterized in that: The spraying pressure is 35Pa±3Pa, and the shortest spraying route length of the acid etching solution is 300±50mm.

8. The method for preparing a glass casing according to claim 4, characterized in that: The acid etching solution comprises an acid agent and water, and satisfies at least one of the following conditions: 1) The mass percentage of the acid agent in the acid etching solution is 30% to 50%; 2) The acid agent includes HF, H2SO4 and HCl, and the mass ratio of HF, H2SO4 and HCl is (5-7):(2-4):

1.

9. The method for preparing a glass casing according to claim 4, characterized in that: Includes at least one of the following features: 1) The ambient temperature of the etching of the flat glass by the acid etching solution is 35°C ± 1°C; 2) The etching rate of the flat glass under the action of the acid etching solution is 0.0045 mm / min±0.0005 mm / min; 3) The etching time of the flat glass under the action of the acid etching solution is 4h±1h.

10. The method for preparing a glass casing according to any one of claims 4 to 9, characterized in that: After the acid-resistant protective film is attached and before the flat glass is rotated, the following steps are also included: The flat glass with the acid-resistant protective film attached thereto is subjected to a degassing treatment to remove bubbles between the acid-resistant protective film and the flat glass.

11. The method for preparing a glass casing according to any one of claims 4 to 9, characterized in that: The flat glass comprises a plurality of sub-processing units, the size of each sub-processing unit corresponds to the size of the glass shell, and the acid-resistant protective film is attached to a preset position of the flat glass, comprising the following steps: The acid-resistant protective film is attached to a position corresponding to the top surface of the boss of the glass shell in each sub-processing unit.

12. The method for preparing a glass casing according to any one of claims 4 to 9, characterized in that: The flat glass comprises a first flat glass, a second flat glass and a spacer film, wherein the first flat glass comprises a front surface and a back surface opposite to each other, the second flat glass comprises a front surface and a back surface opposite to each other, the spacer film connects the back surface of the first flat glass and the back surface of the second flat glass, and the acid-resistant protective film is attached to a preset position of the flat glass, comprising the following steps: Affixing the acid-resistant protective film to a preset position on the front surface of the first flat glass; and The acid-resistant protective film is attached to a preset position on the front surface of the second flat glass.

13. The method for preparing a glass casing according to claim 12, characterized in that: Includes at least one of the following features: 1) The flat glass is a single piece of glass with a thickness of 2mm~2.5mm; 2) The thickness of the first flat glass is 2 mm to 2.5 mm; 3) The thickness of the second flat glass is 2 mm to 2.5 mm.

14. The method for preparing a glass casing according to claim 12, characterized in that: Before rotating the flat glass, the method further comprises the following steps: The edge of the first plane glass and the edge of the second plane glass are bonded together.

15. An electronic device, characterized in that: A display module, a circuit board, and a glass housing according to any one of claims 1 to 3 or a glass housing prepared by the preparation method according to any one of claims 4 to 14; The display module and the glass shell are enclosed to form a receiving space; The circuit board is located in the accommodating space.

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