Shell, preparation method thereof and electronic equipment

Abstract

The invention provides a shell, a preparation method thereof and electronic equipment. The shell of the embodiment of the invention comprises a shell part; the protruding part is arranged on one side of the shell part in a protruding mode, the protruding part is provided with a first surface and a second surface which are connected, the first surface is the surface, away from the shell part, of the protruding part, the second surface is the side wall of the protruding part, and the second surface is a concave arc surface; and the included angle alpha between the tangent plane of the second surface at the joint of the second surface and the first surface and the first surface is greater than or equal to 122 degrees and less than or equal to 132 degrees. The shell provided by the embodiment of the invention has a better appearance effect.

Description

Technical Field

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

[0002] With the development of technology and the improvement of living standards, people have put forward higher requirements for the appearance and visual effects of electronic devices (such as mobile phones). In order to make the battery back cover of the electronic device have a better appearance, a crater boss is usually set at the position of the back cover corresponding to the rear camera. However, the appearance effect of the existing crater boss is not ideal. Summary of the invention

[0003] The embodiment of the present application provides a housing having a better appearance.

[0004] A first aspect of the present application provides a housing, which includes:

[0005] a housing portion; and

[0006] A protrusion, wherein the protrusion is protruding from one side of the shell portion, and the protrusion has a first surface and a second surface that are connected, wherein the first surface is a surface of the protrusion that faces away from the shell portion, and the second surface is a side wall of the protrusion, and the second surface is a concave arc surface, and an angle α between a tangent surface of the second surface at a connection with the first surface and the first surface is in a range of 122°≤α≤132°.

[0007] A second aspect of the present application provides a method for preparing a housing, which includes:

[0008] Providing a substrate, wherein the substrate has a predetermined surface;

[0009] forming a protective layer on a portion of the predetermined surface of the substrate; and

[0010] The area on the preset surface of the substrate except the protective layer is thinned to obtain the shell, wherein the shell includes a shell portion and a protruding portion, the protruding portion is protruding on one side of the shell portion, the protruding portion has a first surface and a second surface connected to each other, the first surface is the surface of the protruding portion facing away from the shell portion, the second surface is the side wall of the protruding portion, the second surface is a concave arc surface, and the angle α between the tangent surface of the second surface at the connection with the first surface and the first surface is in the range of 122°≤α≤132°.

[0011] A third aspect of the present application provides an electronic device, comprising:

[0012] Display screen;

[0013] The housing described in the first aspect of the present application or the housing manufactured by the method for manufacturing the housing described in the second aspect of the present application, wherein the housing is disposed opposite to the display screen, and the protrusion is disposed away from the display screen; and

[0014] A processor, the processor is located between the housing and the display screen, the processor is electrically connected to the display screen, and is used to control the display screen to display. Display component;

[0015] The shell of the embodiment of the present application includes a shell part and a protrusion, the protrusion is protruding on one side of the shell part, the protrusion has a first surface and a second surface connected, the first surface is the surface of the protrusion away from the shell part, the second surface is the side wall of the protrusion, the second surface is a concave arc surface, and the angle α between the tangent of the second surface at the connection with the first surface and the first surface is in the range of 122°≤α≤132°. By designing the angle α between the tangent of the second surface at the connection with the first surface and the first surface, the ridges of the protrusion of the shell are made more upright and have a better appearance. In addition, the shell can be made easier to process and have a higher processing yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the planar structure of a shell according to an embodiment of the present application.

[0018] Figure 2 The shell of one embodiment of the present application is along Figure 1 Schematic diagram of the cross-sectional structure in the AA direction.

[0019] Figure 3 yes Figure 2 Enlarged view of the dotted box I in the middle.

[0020] Figure 4 It is a schematic diagram of the planar structure of a shell of another embodiment of the present application.

[0021] Figure 5 It is a schematic diagram of the process of a method for preparing a shell according to an embodiment of the present application.

[0022] Figure 6 It is a schematic flow chart of a method for preparing a shell according to another embodiment of the present application.

[0023] Figure 7 This application Figure 6 A schematic structural diagram of the process for preparing a shell in an embodiment.

[0024] Figure 8 It is a schematic flow chart of a method for preparing a shell according to another embodiment of the present application.

[0025] Fig. 9 It is a schematic flow chart of a method for preparing a shell according to another embodiment of the present application.

[0026] Fig.10 It is a schematic flow chart of a method for preparing a shell according to another embodiment of the present application.

[0027] Fig.11 It is a schematic flow chart of a method for preparing a shell according to another embodiment of the present application.

[0028] Fig.12 This application Fig.11 A schematic structural diagram of the process for preparing a shell in an embodiment.

[0029] Fig.13 This is a confocal microscope image of the outer periphery of the protrusion of the shell of Example 1 of the present application, where the magnification is 100 times.

[0030] Fig.14 This is a confocal microscope image of another part of the outer periphery of the protruding portion of the shell of Example 1 of the present application, where the magnification is 100 times.

[0031] Fig.15 This is a confocal microscope image of the outer periphery of the protrusion of the shell of Comparative Example 1 of the present application, wherein the magnification is 100 times.

[0032] Fig.16 This is a confocal microscope image of another part of the outer periphery of the protruding portion of the shell of Comparative Example 1 of the present application, wherein the magnification is 100 times.

[0033] Fig.17 It is a schematic diagram of the structure of an electronic device according to an embodiment of the present application.

[0034] Fig.18 It is a schematic diagram of a partial exploded structure of an electronic device according to an embodiment of the present application.

[0035] Fig.19 It is a circuit block diagram of an electronic device according to an embodiment of the present application.

[0036] Description of reference numerals:

[0037] 100-shell, 10-shell portion, 11-third surface, 20-protrusion, 21-first surface, 22-second surface, 23-section, 24-edge, 30-mounting hole, 100a-substrate, 10a-preset surface, 20a-shielding layer, 30a-protective layer, 40a-shielding cover, 700-electronic device, 710-display screen, 720-middle frame, 730-processor, 750-memory, 770-camera module. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0039] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices.

[0040] The technical solutions in the embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0041] It should be noted that, for the convenience of explanation, in the embodiments of the present application, the same figure marks represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments.

[0042] With the development of technology and the improvement of living standards, people have put forward higher requirements for the appearance and visual effects of electronic devices (such as mobile phones). In order to make the battery back cover of the electronic device have a better appearance, a crater boss is usually set at the position of the back cover corresponding to the rear camera. However, the appearance effect of the existing crater boss is not ideal.

[0043] In the related art, the battery back cover includes a shell body and a crater boss, the crater boss is convexly arranged on one side of the shell body, the surface of the crater boss away from the shell body is often smoothly transitioned to the crater boss (such as having an arc chamfer), or the design is unreasonable, so that the ridges of the crater boss are not straight enough, affecting the appearance of the battery back cover.

[0044] Figure 1 It is a schematic diagram of the planar structure of the housing 100 according to an embodiment of the present application. Figure 2 The housing 100 of one embodiment of the present application is Figure 1 Schematic diagram of the cross-sectional structure in the AA direction. Figure 3 yes Figure 2 Enlarged view of the dotted box I in the middle.

[0045] See also Figures 1 to 3 The embodiment of the present application provides a shell 100, which includes: a shell portion 10 and a protrusion 20, the protrusion 20 is protruding from one side of the shell portion 10, the protrusion 20 has a first surface 21 and a second surface 22 connected to each other, the first surface 21 is the surface of the protrusion 20 away from the shell portion 10, the second surface 22 is the side wall of the protrusion 20, the second surface 22 is a concave arc surface, and the angle α between the tangent surface 23 of the second surface 22 at the connection with the first surface 21 and the first surface 21 is in the range of 122°≤α≤132°.

[0046] The embodiment of the present application provides a housing 100, and the housing 100 of the present application can be applied to portable electronic devices such as mobile phones, tablet computers, laptop computers, desktop computers, smart bracelets, smart watches, e-readers, and game consoles.

[0047] It should be noted that when the housing 100 of the present application is applied to an electronic device, the protrusion 20 is arranged corresponding to the rear camera module of the electronic device.

[0048] Figure 4 It is a schematic diagram of the planar structure of a housing 100 according to another embodiment of the present application.

[0049] See also Figure 4 Optionally, the housing 100 has a mounting hole 30 that passes through the housing portion 10 and the protruding portion 20 , and the mounting hole 30 is used to set a camera module, a camera decoration, etc. of the electronic device.

[0050] Optionally, the number of mounting holes 30 may be one or more. When the number of mounting holes 30 is multiple, the multiple mounting holes 30 are arranged at intervals. The number of mounting holes 30 can be designed according to the number of components such as camera modules and flashlights of the electronic device using the housing 100, and this application does not make specific restrictions.

[0051] It can be understood that one end of the second surface 22 is connected to the first surface 21 , and the other end is connected to the surface of the housing portion 10 facing the protruding portion 20 .

[0052] It should be noted that the second surface 22 is a concave arc surface. It can be understood that the arc center of the concave arc surface is located on the side of the shell 100 having the protrusion 20 , that is, the arc center of the concave arc surface is away from the shell part 10 .

[0053] It should be noted that the second surface 22 has a cut surface 23 at the end portion connected to the first surface 21 , and the included angle α between the cut surface 23 and the first surface 21 is in the range of 122°≤α≤132°.

[0054] It should be noted that the angle α between the tangent plane 23 of the second surface 22 at the connection with the first surface 21 and the first surface 21 can be any value between 122° and 132°. Specifically, the angle α between the tangent plane 23 of the second surface 22 at the connection with the first surface 21 and the first surface 21 can be, but is not limited to, 122°, 123°, 124°, 125°, 126°, 127°, 128°, 129°, 130°, 131°, 132°, etc. If the angle α between the cut surface 23 of the second surface 22 at the connection with the first surface 21 and the first surface 21 is too small, the protrusion 20 is easy to break during processing. In addition, the arc surface of the second surface 22 near the first surface 21 is not easy to be polished, thereby reducing the manufacturing yield of the shell 100. Moreover, the periphery of the protrusion 20 is easy to have a scratchy feel, affecting the feel of the shell 100; the angle α between the cut surface 23 of the second surface 22 at the connection with the first surface 21 and the first surface 21 is too large, and the ridgeline at the connection between the second surface 22 and the first surface 21 is not straight enough, which reduces the appearance of the shell 100. In this embodiment, when the angle α between the cut surface 23 of the second surface 22 at the connection with the first surface 21 and the first surface 21 is in the range of 122°≤α≤132°, the ridgeline on the protrusion 20 of the shell 100 can be made more straight, with a better appearance, and the shell 100 can also have a higher processing yield.

[0055] The housing 100 of the embodiment of the present application includes a housing portion 10 and a protrusion 20, wherein the protrusion 20 is protruding from one side of the housing portion 10, and the protrusion 20 has a first surface 21 and a second surface 22 connected to each other, wherein the first surface 21 is the surface of the protrusion 20 away from the housing portion 10, and the second surface 22 is the side wall of the protrusion 20, and the second surface 22 is a concave arc surface, and the angle α between the cut surface 23 of the second surface 22 at the connection with the first surface 21 and the first surface 21 is in the range of 122°≤α≤132°. By designing the angle α between the cut surface 23 of the second surface 22 at the connection with the first surface 21 and the first surface 21, the ridgeline of the protrusion 20 of the housing 100 is made more upright, and has a better appearance effect. In addition, the housing 100 can also be made easier to process, and has a higher processing yield.

[0056] In some embodiments, the housing 100 is a glass housing 100 , the housing portion 10 is a glass housing portion 10 , the protrusion 20 is a glass protrusion 20 , and the housing portion 10 and the protrusion 20 are an integral structure.

[0057] It can be understood that in this embodiment, the housing 100 is formed by processing a whole piece of glass. The housing portion 10 and the protrusion 20 are two different parts of the same component. There is no interface, welding interface, splicing interface, etc. between the housing portion 10 and the protrusion 20.

[0058] In this embodiment, the shell portion 10 and the protruding portion 20 are an integrated structure, which can better simplify the assembly of the shell 100, so that it has a better sense of integration and a better appearance.

[0059] In some embodiments, a curvature radius of an end of the second surface 22 connected to the first surface 21 is smaller than a curvature radius of an end of the second surface 22 connected to the housing portion 10 .

[0060] It can be understood that the curvature radius of the second surface 22 at one end close to the first surface 21 is smaller than the curvature radius of the second surface 22 at one end close to the housing portion 10 .

[0061] Exemplarily, the curvature radius of one end of the second surface 22 connected to the first surface 21 is 2.814 mm, and the curvature radius of one end of the second surface 22 connected to the housing portion 10 is 3.691 mm.

[0062] In this embodiment, by making the curvature radius of one end of the second surface 22 connected to the first surface 21 smaller than the curvature radius of one end of the second surface 22 connected to the shell portion 10, the ridges of the protrusion 20 can appear more upright, thereby having a better appearance effect; in addition, it is also beneficial to the processing of the second surface 22 at the end close to the first surface 21 and the end close to the shell portion 10; furthermore, the end of the second surface 22 close to the shell portion 10 and the surface of the shell portion 10 facing the protrusion 20 can be made to transition more smoothly, thereby having a better appearance effect.

[0063] In some embodiments, the radius of curvature of the second surface 22 from one end connected to the first surface 21 to one end away from the first surface 21 first gradually decreases, and then gradually increases.

[0064] It can be understood that the curvature radius of the end of the second surface 22 connected to the first surface 21 and the curvature radius of the end of the second surface 22 connected to the shell portion 10 are both greater than the curvature radius of the second surface 22 near the middle position.

[0065] Exemplarily, the radius of curvature of the end of the second surface 22 connected to the first surface 21 is 2.814 mm, the minimum radius of curvature of the second surface 22 is 2.219 mm, and the radius of curvature of the end of the second surface 22 connected to the housing portion 10 is 3.691 mm. The radius of curvature of the second surface 22 from the end connected to the first surface 21 to the end away from the first surface 21 gradually decreases from 2.814 mm to 2.219 mm, and then gradually increases from 2.219 mm to 3.691 mm.

[0066] In this embodiment, by making the curvature radius of the second surface 22 gradually decrease from the end connected to the first surface 21 to the end away from the first surface 21, and then gradually increase, the curvature of the second surface 22 can be better transitioned, the three-dimensional sense of the protrusion 20 is stronger, and the shell 100 has a better appearance effect; in addition, by making the connection between the second surface 22 and the first surface 21 and the connection between the second surface 22 and the surface of the shell part 10 facing the protrusion 20 have a larger curvature radius, the second surface 22 has a smaller curvature radius near the middle position, which is beneficial to the processing of the second surface 22 and can better improve the processing yield of the shell 100.

[0067] In some embodiments, the minimum curvature radius R of the second surface 22 is in the range of 1.7 mm≤R≤2.7 mm.

[0068] It should be noted that the minimum curvature radius R of the second surface 22 refers to the curvature radius of the position on the second surface 22 where the curvature radius is the smallest.

[0069] It should be noted that the minimum curvature radius R of the second surface 22 can be any value between 1.7 mm and 2.7 mm. Specifically, the minimum curvature radius R of the second surface 22 can be, but is not limited to, 1.7 mm, 1.8 mm, 1.9 mm, 2.0 mm, 2.1 mm, 2.2 mm, 2.3 mm, 2.4 mm, 2.5 mm, 2.6 mm, 2.7 mm, etc.

[0070] In this embodiment, if the minimum curvature radius R of the second surface 22 is too large, the protrusion 20 will not be straight enough, thereby reducing the appearance of the shell 100; if the minimum curvature radius R of the second surface 22 is too small, the processing difficulty of the second surface 22 is increased, making it difficult to polish the second surface 22, thereby reducing the preparation yield of the shell 100.

[0071] Please see again Figure 1 and Figure 3 In some embodiments, the first surface 21 and the second surface 22 intersect to form an edge line 24 , and the step difference △h of the edge line 24 is in the range of 5μm≤△h≤15μm.

[0072] It can be understood that the step difference Δh of the outer periphery of the end of the protrusion 20 away from the housing portion 10 is in the range of 5 μm≤Δh≤15 μm.

[0073] It should be noted that the step difference of the edge 24 is used to characterize the flatness of the edge 24, that is, the height difference between the highest point and the lowest point on the edge 24. The smaller the step difference of the edge 24, the smoother or smoother the edge 24, the weaker the jagged feeling of the edge 24, and the better the feel and appearance.

[0074] It should be noted that the step difference △h of the ridge line 24 can be any value between 5μm and 15μm. Specifically, the step difference △h of the ridge line 24 can be, but is not limited to, 5μm, 6μm, 7μm, 8μm, 9μm, 10μm, 11μm, 12μm, 13μm, 14μm, 15μm, etc.

[0075] In this embodiment, the step difference Δh of the ridge line 24 is too small, which increases the difficulty of manufacturing the housing 100 and reduces the manufacturing yield of the housing 100; if the step difference Δh of the ridge line 24 is too large, the ridge line 24 has a strong sawtooth feeling, which affects the feel of the housing 100 and reduces the appearance of the housing 100. The ridge line 24 of the protrusion 20 of the housing 100 of the present application has a smaller step difference, so as to have a better feel and appearance.

[0076] Please see again Figure 2 and Figure 3In some embodiments, the surface of the shell portion 10 facing the protrusion 20 is the third surface 11, and the line width w of the orthographic projection of the second surface 22 on the third surface 11 is in the range of 2mm≤w≤2.4mm.

[0077] It should be noted that the first surface 21, the second surface 22 and the third surface 11 are sequentially connected, and the second surface 22 is between the first surface 21 and the third surface 11. Specifically, the second surface 22 is arranged around the periphery of the first surface 21, and the third surface 11 is arranged around the periphery of the second surface 22.

[0078] It should be noted that the orthographic projection of the second surface 22 on the third surface 11 is a ring structure, and the line width w of the ring structure is in the range of 2 mm≤w≤2.4 mm.

[0079] Optionally, the first surface 21 is parallel to the third surface 11. This makes the housing 100 have a better appearance as a whole.

[0080] It can be understood that the line width w of the orthographic projection of the second surface 22 on the third surface 11 can be any value between 2 mm and 2.4 mm. Specifically, the line width w of the orthographic projection of the second surface 22 on the third surface 11 can be, but is not limited to, 2 mm, 2.05 mm, 2.1 mm, 2.15 mm, 2.2 mm, 2.25 mm, 2.3 mm, 2.35 mm, 2.4 mm, etc.

[0081] In this embodiment, if the line width w of the orthographic projection of the second surface 22 on the third surface 11 is too small, the curvature transition of the second surface 22 of the protrusion 20 is not obvious, which reduces the appearance of the shell 100. In addition, the protrusion 20 is easy to scratch the hands, affecting the feel of the shell 100; if the line width w of the orthographic projection of the second surface 22 on the third surface 11 is too large, the area of ​​the second surface 22 is too large, which reduces the processing efficiency of the shell 100 and increases the preparation cost of the shell 100.

[0082] In some embodiments, along the arrangement direction of the housing portion 10 and the protrusion 20 , the height h of the protrusion 20 is in the range of 0.93 mm≤h≤1.03 mm.

[0083] It can be understood that, along the thickness direction of the housing 100 , the height h of the protrusion 20 is in the range of 0.93 mm ≤ h ≤ 1.03 mm.

[0084] It can be understood that, along the arrangement direction of the housing portion 10 and the protrusion 20, the height h of the protrusion 20 can be any value between 0.93 mm and 1.03 mm. Specifically, along the arrangement direction of the housing portion 10 and the protrusion 20, the height h of the protrusion 20 can be, but is not limited to, 0.93 mm, 0.94 mm, 0.95 mm, 0.96 mm, 0.97 mm, 0.98 mm, 0.99 mm, 1.00 mm, 1.01 mm, 1.02 mm, 1.03 mm, etc.

[0085] When the housing 100 is applied to an electronic device, the mounting hole 30 is used to set the components of the electronic device, and a camera module is provided at a position corresponding to the mounting hole 30. In this embodiment, along the arrangement direction of the housing portion 10 and the protrusion 20, the height h of the protrusion 20 is too small, then when the housing 100 is applied to the electronic device, the housing 100 is easy to interfere with the camera module, affecting the assembly of the camera module, in addition, the three-dimensional sense of the protrusion 20 is reduced, and the appearance effect of the housing 100 is reduced; along the arrangement direction of the housing portion 10 and the protrusion 20, the height h of the protrusion 20 is too large, then when the housing 100 is applied to the electronic device, when installing the components of the electronic device, it is necessary to dispense glue in the mounting hole 30 to bond the components, and the height of the protrusion 20 is too large, which increases the difficulty of dispensing glue in the mounting hole 30, so that the components are not firmly bonded.

[0086] In some embodiments, the first surface 21 is a smooth surface, and the second surface 22 and the third surface 11 are rough surfaces.

[0087] In other words, the first surface 21 is a glossy surface, and the second surface 22 and the third surface 11 are matte surfaces.

[0088] Optionally, the second surface 22 and the third surface 11 have a glittering sand structure, so that the second surface 22 and the third surface 11 can present a glittering effect.

[0089] Optionally, the flash sand structure may be, but is not limited to, at least one of low-sparkle flash sand, ordinary flash sand, soft-sand flash sand, high-sparkle flash sand, and the like.

[0090] In this embodiment, the first surface 21 is a glossy surface, and the second surface 22 and the third surface 11 are matte surfaces, thereby achieving glossy and matte uniformity on the housing 100 , and making the housing 100 have a better appearance.

[0091] The shell 100 of the embodiment of the present application can be prepared by the method described in the following embodiments of the present application. In addition, it can also be prepared by other methods. The preparation method of the embodiment of the present application is only one or more preparation methods of the shell 100 of the present application and should not be understood as a limitation on the shell 100 provided in the embodiment of the present application.

[0092] Figure 5 It is a schematic flow chart of a method for preparing a housing 100 according to an embodiment of the present application.

[0093] See also Figure 5 The present application also provides a method for preparing a housing 100, which includes:

[0094] S201, providing a substrate, wherein the substrate has a preset surface;

[0095] Optionally, the substrate may be, but is not limited to, a glass substrate. Optionally, the substrate may be, but is not limited to, a 2D structure, a 3D structure, etc.

[0096] S202, forming a protective layer on a portion of the predetermined surface of the substrate; and

[0097] It should be noted that the protective layer does not completely cover the preset surface, and another part of the preset surface is exposed from the protective layer.

[0098] S203 , performing a thinning process on the area on the preset surface of the substrate except the protective layer to obtain the housing 100 .

[0099] In which, the shell 100 includes a shell portion 10 and a protrusion 20, the protrusion 20 is protruding from one side of the shell portion 10, and the protrusion 20 has a first surface 21 and a second surface 22 connected to each other, the first surface 21 is the surface of the protrusion 20 facing away from the shell portion 10, the second surface 22 is the side wall of the protrusion 20, the second surface 22 is a concave arc surface, and the angle α between the cut surface 23 of the second surface 22 at the connection with the first surface 21 and the first surface 21 is in the range of 122°≤α≤132°.

[0100] Optionally, the thinning process may be computer numerically controlled surface reduction (referred to as CNC surface reduction). During the thinning process, the peripheral side wall of the substrate is polished at the same time to make the peripheral side wall of the substrate smoother.

[0101] It is understandable that the preset surface side of the substrate layer is thinned, and the position corresponding to the protective layer is not thinned, so that the shell 100 is formed as an unequal thickness structure, that is, the thickness is greater at the position corresponding to the protrusion 20. It is understandable that the surface of the substrate away from the preset surface is not thinned, that is, a local thinning process is performed.

[0102] It can be understood that after the substrate is thinned, a protrusion 20 is formed at a position of the substrate corresponding to the protective layer, and the rest of the substrate forms the shell 10 .

[0103] For detailed description of other aspects of the housing 100 , the housing portion 10 , the protruding portion 20 , the first surface 21 and the second surface 22 , please refer to the description of the corresponding parts of the above embodiments, which will not be repeated here.

[0104] Before the shell 100 of the embodiment of the present application performs thinning treatment on the substrate, a protective layer is first formed on the preset surface at the position corresponding to the protrusion 20, so that when thinning is performed, the preparation accuracy of the protrusion 20 can be improved, and the edge 24 of the protrusion 20 can be better prevented from being worn, so that the angle α between the cut surface 23 of the second surface 22 of the shell 100 at the connection with the first surface 21 and the first surface 21 is in the range of 122°≤α≤132°, thereby making the edge 24 of the protrusion 20 of the shell 100 more upright and having a better appearance effect. In addition, the shell 100 can also be made easier to process and have a higher processing yield.

[0105] Figure 6 It is a schematic flow chart of a method for preparing a shell 100 according to another embodiment of the present application. Figure 7 This application Figure 6 A structural schematic diagram of the preparation process of the housing 100 of the embodiment.

[0106] See also Figure 6 and Figure 7 The present application also provides a method for preparing a housing 100, which includes:

[0107] S201, providing a substrate 100a, wherein the substrate 100a has a preset surface 10a;

[0108] S202', forming a protective layer 20a on the surface of the substrate 100a away from the preset surface 10a;

[0109] Optionally, the material of the protective layer 20a may be, but is not limited to, acid-resistant protective ink.

[0110] Optionally, the thickness of the protective layer 20a is 30 μm to 50 μm. Specifically, the thickness of the protective layer 20a may be, but is not limited to, 30 μm, 35 μm, 40 μm, 45 μm, 50 μm, etc. If the thickness of the protective layer 20a is too thin, when the surface of the substrate 100a away from the mask layer is thinned and needs to be frosted so that the shell 100 has a flash sand effect, the acid resistance of the protective layer 20a is insufficient, which affects the frosting treatment; if the thickness of the protective layer 20a is too thick, the preparation cost of the shell 100 is increased.

[0111] In the embodiments of the present application, when a numerical value range from a to b is involved, unless otherwise specified, it means that the numerical value can be any numerical value between a and b, including the endpoint numerical value a and the endpoint numerical value b.

[0112] S202, forming a protective layer 30a on a portion of the predetermined surface 10a of the substrate 100a; and

[0113] It should be noted that there is no order of precedence between S202 and S202'. S202' may be first and S202 may be second, or S202 may be first and S202' may be second.

[0114] S203 , performing a thinning process on the predetermined surface 10a of the substrate 100a except for the protective layer 30a to obtain the housing 100 .

[0115] For detailed description of other aspects of S201, S202 and S203, please refer to the description of the corresponding parts of the above embodiment, which will not be repeated here.

[0116] Optionally, the protective layer 30a is acid-resistant and wear-resistant. The protective layer 30a has good wear resistance, so when the preset surface 10a side of the substrate 100a is thinned, polished, etc., the protective layer 30a can be better prevented from falling off; the protective layer 30a has good acid resistance, so when the substrate 100a is subjected to surface roughening treatment in an acidic solution such as frosting liquid, the protective layer 30a can be better prevented from falling off, thereby improving the preparation yield of the shell 100.

[0117] Optionally, the raw material components (i.e., protective ink) of the protective layer 30a include 40% to 60% of modified epoxy resin monomer, 10% to 20% of wear-resistant particles, and 2% to 5% of epoxy curing agent by mass fraction. After the modified epoxy resin monomer and the epoxy curing agent are cured, the epoxy resin formed can make the protective layer 30a have better acid resistance, and the addition of wear-resistant particles can make the protective layer 30a have more suitable hardness and surface smoothness, so that the protective layer 30a has better wear resistance.

[0118] Optionally, the wear-resistant particles may be, but are not limited to, particles with high wear resistance such as wax powder, matte powder, talcum powder, etc.

[0119] Optionally, the original components of the protective layer 30a also include 10% to 15% of a diluent and 1% to 2% of an auxiliary agent. The diluent can dilute the protective ink, which is beneficial to the screen printing and processing of the protective ink. Optionally, the auxiliary agent can be but is not limited to at least one of a defoamer and a leveling agent. The defoamer is beneficial to eliminate bubbles in the protective ink, and the leveling agent makes the protective ink have better leveling properties, so that the prepared protective layer 30a has better acid resistance and wear resistance.

[0120] In some embodiments, the pencil hardness of the protective layer 30a ranges from 2H to 3H.

[0121] The pencil hardness test in the embodiment of the present application adopts GB / T 6739-2006 to measure the 1 kg pencil hardness.

[0122] Specifically, the pencil hardness of the protective layer 30 a may be, but is not limited to, 2H, 3H, or the like.

[0123] In this embodiment, if the pencil hardness of the protective layer 30a is too small, the wear resistance of the protective layer 30a is insufficient, and the protective layer 30a is prone to fall off when the substrate 100a is subsequently subjected to thinning treatment, polishing treatment, etc.; if the pencil hardness of the protective layer 30a is too large, the brittleness of the protective layer 30a increases, making the protective layer 30a too brittle. When the substrate 100a is subsequently subjected to thinning treatment, polishing treatment, etc., the protective layer 30a is prone to edge collapse, thereby reducing the preparation yield of the shell 100.

[0124] In some embodiments, the thickness of the protection layer 30 a ranges from 30 μm to 60 μm.

[0125] It is understandable that the thickness of the protective layer 30a is any value between 30 μm and 60 μm. Specifically, the thickness of the protective layer 30a can be, but is not limited to, 30 μm, 35 μm, 40 μm, 45 μm, 50 μm, 55 μm, 60 μm, etc.

[0126] In this embodiment, if the thickness of the protective layer 30a is too thin, the wear resistance and acid resistance of the protective layer 30a are reduced, making the protective layer 30a prone to stratification or falling off in subsequent thinning, polishing and other processing steps, thereby reducing the protective effect of the protective layer 30a; if the thickness of the protective layer 30a is too thick, the cost of the protective layer 30a is increased, thereby increasing the preparation cost of the shell 100.

[0127] In some embodiments, the size of the protection layer 30 a is 2 mm to 3 mm larger than the size of the protrusion 20 .

[0128] It can be understood that the outer periphery of the protective layer 30a is 2mm to 3mm larger than the outer periphery of the protrusion 20. In other words, the outer periphery of the protrusion 20 is 2mm to 3mm smaller than the outer periphery of the protective layer 30a.

[0129] Specifically, the size of the protective layer 30a expanded outward from the size of the protruding portion 20 may be, but is not limited to, 2 mm, 2.2 mm, 2.4 mm, 2.6 mm, 2.8 mm, 3 mm, etc.

[0130] In this embodiment, if the size of the protective layer 30a is too small compared to the size of the protrusion 20, then during the thinning process, part of the edge of the protective layer 30a will also be removed, which increases the difficulty of grinding the edge of the protective layer 30a, so that too much of the edge of the protective layer 30a is removed, and the size of the obtained protrusion 20 is too small; if the size of the protective layer 30a is too large compared to the size of the protrusion 20, the area covered by the protective layer 30a is too large, which is easy to affect the processing of the substrate 100a layer on the protective layer 30a. In addition, if the size of the protective layer 30a is too small or too large compared to the size of the protrusion 20, it is easy to make the size of the obtained protrusion 20 too small or too large compared to the preset size, thereby reducing the preparation yield of the shell 100. When the size of the protective layer 30 a is 2 mm to 3 mm larger than the size of the protrusion 20 , after the substrate 100 a is thinned, the size of the protective layer 30 a and the size of the protrusion 20 can be closer to 1:1.

[0131] Figure 8 It is a schematic flow chart of a method for preparing a shell 100 according to another embodiment of the present application.

[0132] See also Figure 8 The present application also provides a method for preparing a housing 100, which includes:

[0133] S301, providing a substrate 100a, wherein the substrate 100a has a preset surface 10a;

[0134] S302, forming a protective layer 20a on a surface of the substrate 100a away from the preset surface 10a;

[0135] S303, forming a protective layer 30a on a portion of the predetermined surface 10a of the substrate 100a;

[0136] S304, performing a thinning process on the area on the predetermined surface 10a of the substrate 100a except for the protective layer 30a; and

[0137] For a detailed description of S301 to S304 , please refer to the description of the corresponding parts of the above embodiment, which will not be repeated here.

[0138] S305 , performing a peripheral edge scanning process (SPM process for short) on the peripheral sidewall of the substrate 100 a .

[0139] Optionally, the substrate 100a is subjected to SPM treatment to remove grinding wheel marks on the peripheral sidewalls of the substrate 100a, and the substrate 100a is polished to make the substrate 100a brighter.

[0140] Fig. 9 It is a schematic flow chart of a method for preparing a shell 100 according to another embodiment of the present application.

[0141] See also Fig. 9 The present application also provides a method for preparing a housing 100, which includes:

[0142] S401, providing a substrate 100a, wherein the substrate 100a has a preset surface 10a;

[0143] S402, forming a protective layer 20a on a surface of the substrate 100a away from the preset surface 10a;

[0144] S403, forming a protective layer 30a on a portion of the predetermined surface 10a of the substrate 100a;

[0145] S404, performing a thinning process on the area on the predetermined surface 10a of the substrate 100a except for the protective layer 30a;

[0146] S405, performing a circumferential edge sweeping process on the peripheral side wall of the substrate 100a to obtain a housing 100, wherein the housing 100 includes a housing portion 10 and a protruding portion 20;

[0147] For a detailed description of S401 to S405 , please refer to the description of the corresponding parts of the above embodiment, which will not be repeated here.

[0148] S406, disposing a shielding cover 40a on the protective layer 30a, wherein the shielding cover 40a is retracted by 0.1 mm to 0.5 mm compared to the protruding portion 20; and

[0149] Optionally, the dimension of the shielding cover 40a that is retracted relative to the protruding portion 20 may be, but is not limited to, 0.1 mm, 0.15 mm, 0.2 mm, 0.25 mm, 0.3 mm, 0.35 mm, 0.4 mm, 0.45 mm, 0.5 mm, etc.

[0150] Before polishing the surface of the housing 10 facing the protrusion 20 and the side wall of the protrusion 20 (i.e., the second surface 22), a shielding cover 40a is provided on the protective layer 30a, so that the protective layer 30a can be better prevented from being wiped off during the polishing process. In addition, after the shielding cover 40a is provided on the protrusion 20, there will be an assembly or setting tolerance between the shielding cover 40a and the protrusion 20. By making the shielding cover 40a retracted relative to the protrusion 20, it can be avoided that the shielding cover 40a shields part of the periphery of the protrusion 20 due to the assembly or setting tolerance, thereby affecting the subsequent polishing of the side wall of the protrusion 20 and affecting the appearance effect of the produced protrusion 20. Although the portion of the protective layer 30a protruding from the shielding cover 40a may be polished off during the subsequent polishing process, since the protective layer 30a has high hardness and wear resistance, the wear resistance of the protective layer 30a in this application can be relied upon to avoid the protective layer 30a protruding from the shielding cover 40a from being polished off.

[0151] S407 , polishing the surface of the shell portion 10 facing the protruding portion 20 and the side wall of the protruding portion 20 .

[0152] Optionally, the surface of the shell portion 10 facing the protrusion 20 and the side wall of the protrusion 20 are polished by mechanical polishing using a softer consumable material to polish the grinding wheel marks left by CNC surface reduction.

[0153] In this embodiment, a shielding cover 40a is provided before polishing the surface of the shell portion 10 facing the protrusion 20 and the side wall of the protrusion 20, and the shielding cover 40a is retracted relative to the protrusion 20, thereby better preventing the protective layer 30a from being thrown away during the polishing process. In addition, the polishing of the side wall of the protrusion 20 will not be affected.

[0154] Fig.10 It is a schematic flow chart of a method for preparing a shell 100 according to another embodiment of the present application.

[0155] See also Fig.10 The present application also provides a method for preparing a housing 100, which includes:

[0156] S501, providing a substrate 100a, wherein the substrate 100a has a predetermined surface 10a;

[0157] S502, forming a protective layer 20a on a surface of the substrate 100a away from the preset surface 10a;

[0158] S503, forming a protective layer 30a on a portion of the predetermined surface 10a of the substrate 100a;

[0159] S504, performing a thinning process on the area on the predetermined surface 10a of the substrate 100a except for the protective layer 30a;

[0160] For a detailed description of S501 to S504, please refer to the description of the corresponding parts of the above embodiment, which will not be repeated here.

[0161] S504', fine polishing the side wall of the protrusion 20 using a grinding rod, wherein the Rockwell hardness of the grinding rod ranges from 60° to 70°;

[0162] It should be noted that there is no order difference between S504' and S504, and S504' may be performed first and then S504, or S504 may be performed first and then S504'.

[0163] Optionally, the material of the grinding rod may be, but is not limited to, polyurethane.

[0164] It is understandable that the Rockwell hardness of the grinding rod is any value between 60° and 70°. Specifically, the Rockwell hardness of the grinding rod can be, but is not limited to, 60°, 61°, 62°, 63°, 64°, 65°, 66°, 67°, 68°, 69°, 70°, etc.

[0165] Optionally, the removal amount during fine polishing can be greater than or equal to 0.005 mm, so that the side wall of the protrusion 20 obtained can have better brightness and the subsequent polishing time can be better reduced.

[0166] In this embodiment, after CNC surface reduction, the side wall of the protrusion 20 is finely polished using a grinding rod, which can reduce the time for subsequent polishing and improve the appearance of the protrusion 20. If the Rockwell hardness of the grinding rod is too low, the amount of removal of the side wall of the protrusion 20 during fine polishing cannot meet the requirements, and it is impossible to shorten the subsequent polishing time and improve the appearance of the second surface 22 of the obtained protrusion 20; if the Rockwell hardness of the grinding rod is too high, it is difficult for the grinding rod to fit the side wall of the protrusion 20 well, which may cause the part to be unable to be polished, affecting the fine polishing effect of the side wall of the protrusion 20.

[0167] S505, performing a circumferential edge sweeping process on the peripheral side wall of the substrate 100a to obtain a housing 100, wherein the housing 100 includes a housing portion 10 and a protruding portion 20;

[0168] S506, disposing a shielding cover 40a on the protective layer 30a, wherein the shielding cover 40a is retracted by 0.1 mm to 0.5 mm compared to the protruding portion 20; and

[0169] S507 , polishing the surface of the shell portion 10 facing the protruding portion 20 and the side wall of the protruding portion 20 .

[0170] For a detailed description of S506 to S507, please refer to the description of the corresponding parts of the above embodiment, which will not be repeated here.

[0171] Fig.11 It is a schematic flow chart of a method for preparing a shell 100 according to another embodiment of the present application. Fig.12 This application Fig.11 A structural schematic diagram of the preparation process of the housing 100 of the embodiment.

[0172] See also Fig.11 and Fig.12 The present application also provides a method for preparing a housing 100, which includes:

[0173] S601, providing a substrate 100a, wherein the substrate 100a has a predetermined surface 10a;

[0174] S602, forming a protective layer 20a on a surface of the substrate 100a away from the preset surface 10a;

[0175] S603, forming a protective layer 30a on a portion of the predetermined surface 10a of the substrate 100a;

[0176] S604, performing a thinning process on the area on the predetermined surface 10a of the substrate 100a except for the protective layer 30a;

[0177] S604', fine polishing the side wall of the protrusion 20 using a grinding rod, wherein the Rockwell hardness of the grinding rod ranges from 60° to 70°;

[0178] S605, performing a circumferential edge sweeping process on the peripheral side wall of the substrate 100a to obtain a housing 100, wherein the housing 100 includes a housing portion 10 and a protruding portion 20;

[0179] S606, disposing a shielding cover 40a on the protective layer 30a, wherein the shielding cover 40a is retracted by 0.1 mm to 0.5 mm compared to the protruding portion 20;

[0180] S607, polishing the surface of the housing portion 10 facing the protruding portion 20 and the side wall of the protruding portion 20;

[0181] For a detailed description of S601 to S607, please refer to the description of the corresponding parts of the above embodiment, which will not be repeated here.

[0182] In some embodiments, after polishing and before surface roughening, the preparation method includes: forming a LOGO, such as screen printing a LOGO protective oil.

[0183] S608, performing a surface roughening treatment on the surface of the shell portion 10 facing the protrusion 20 and the side wall of the protrusion 20, so that the surface of the shell portion 10 facing the protrusion 20 and the second surface 22 are rough surfaces; and

[0184] Optionally, the surface roughening treatment may be, but is not limited to, frosting treatment, flash sand treatment (i.e., AG etching), etc. Specifically, frosting liquid is used for etching, so that the surface of the housing portion 10 facing the protrusion 20 and the side wall of the protrusion 20 form a flash sand structure, so that the second surface 22 and the third surface 11 have a flash effect, so that the housing 100 forms a structure in which the glossy surface and the matte surface are the same.

[0185] S609, removing the protection layer 30a and the cover layer 20a.

[0186] Optionally, the protective layer 30a and the mask layer 20a on the surface of the etched substrate 100a are removed, that is, stripping is performed, so as to obtain a matte housing 100 .

[0187] In some embodiments, the preparation method further comprises: performing chemical polishing and chemical strengthening by ion exchange.

[0188] For example, molten alkali metal ion salt is used to perform ion exchange on the shell 100 to strengthen the shell 100, thereby making the shell 100 have higher mechanical strength.

[0189] In the related art, when it is necessary to prepare a matte shell, a protective layer is usually set on one surface of a glass substrate, and the surface of the glass substrate away from the protective layer is partially CNC surface reduction treated to form an uneven thickness structure; then after SPM treatment, polishing and other processes, the shell body and the crater boss are simultaneously treated with flash sand; then the surface of the crater boss away from the shell body is flat-ground to remove the flash sand structure on the surface of the crater boss away from the shell body, so that the surface of the crater boss away from the shell body is a smooth surface, and the surface of the shell body facing the crater boss and the side wall of the crater boss are rough surfaces with a flash sand structure, thereby achieving matte uniformity. In addition, when flat grinding is used to remove the sand surface of the crater boss, there is a tolerance in the thickness of the glass, and it is easy for the sand to not be removed locally. Moreover, when flat grinding is used to remove the sand surface of the crater, it is easy for the bottom to be lifted up and worn by the flat grinding consumables, resulting in a poor appearance. Furthermore, the flat grinding process takes a long time (about 2500s to 3000s), which can easily cause poor process scratches, which are magnified by the chemical polishing process and reduce the yield of the shell. Furthermore, after the entire surface of the substrate is AG treated, the sand is completely applied to the ridge line of the protrusion. After flat grinding, the crystals at the ridge line of the protrusion will be destroyed and cut off, resulting in macro-serrations (the step difference at the ridge line can reach 30μm to 60μm).

[0190] In this embodiment, before the surface roughening treatment (i.e., flash sand treatment) is performed, the method of the embodiment of the present application sets an acid-resistant and wear-resistant protective layer 30a at the position where the boss part is away from the shell part 10, so that after the flash sand treatment, the surface of the boss part away from the shell part 10 does not have a flash sand structure, and there is no need to additionally grind the surface of the boss part away from the shell part 10, so that the first surface 21 can be a smooth surface. Compared with the solution in the related art that the surface of the shell body facing the crater boss and the entire surface of the crater boss are firstly subjected to flash sand treatment, and then the flash sand structure of the surface of the crater boss away from the shell body is flatly ground, the shell 100 prepared by the preparation method of the present application The ridges 24 of the protrusions 20 are more upright, with smaller step differences and no sawtooth phenomenon; in addition, when the thickness of the substrate 100a is determined, the protrusions 20 of the shell 100 prepared by the preparation method of the present application can be made higher (can be made 0.13mm higher), thereby making the shell 100 more three-dimensional and having a better appearance; furthermore, since the surface of the shell part 10 away from the protrusions 20 and the surface of the protrusions 20 away from the shell part 10 are protected by ink, during the manufacturing process, scratches can be better prevented, the shell 100 can be more effectively protected, and the yield of the shell 100 preparation can be improved. It has been verified that the yield can be increased by more than 5% and the cost can be reduced by about 2 yuan.

[0191] The housing 100 of the embodiment of the present application is further described below through specific embodiments.

[0192] Example 1

[0193] The housing 100 of this embodiment is prepared by the following steps:

[0194] (1) providing a glass substrate 100a, wherein the glass substrate 100a has a predetermined surface 10a;

[0195] (2) forming a protective layer 20a on a surface of the substrate 100a away from the predetermined surface 10a;

[0196] (3) forming a protective layer 30a on a portion of the predetermined surface 10a of the substrate 100a;

[0197] (4) performing a thinning process on the area on the predetermined surface 10a of the substrate 100a except for the protective layer 30a;

[0198] (5) performing a circumferential edge sweeping process on the peripheral side wall of the substrate 100a to obtain a housing 100, wherein the housing 100 includes a housing portion 10 and a protruding portion 20;

[0199] (6) a shielding cover 40a is provided on the protective layer 30a, wherein the shielding cover 40a is retracted by 0.2 mm compared to the protruding portion 20;

[0200] (7) polishing the surface of the housing portion 10 facing the protruding portion 20 and the side wall of the protruding portion 20;

[0201] (8) performing surface frosting and etching on the surface of the shell portion 10 facing the protrusion 20 and the side wall of the protrusion 20 to form a flash sand structure on the surface of the shell portion 10 facing the protrusion 20 and the second surface 22; and

[0202] (9) The protection layer 30a and the cover layer 20a are removed.

[0203] Comparative Example 1

[0204] The comparative example of this embodiment is prepared by the following steps:

[0205] (1) providing a glass substrate 100a, wherein the glass substrate 100a has a predetermined surface 10a;

[0206] (2) forming a protective layer 20a on a surface of the substrate 100a away from the predetermined surface 10a;

[0207] (3) performing a thinning process on a portion of the substrate 100a on the side of the predetermined surface 10a to form a housing 100, wherein the housing 100 includes a housing portion 10 and a protruding portion 20 protruding from the housing portion 10;

[0208] (4) performing edge sweeping on the peripheral sidewalls of the substrate 100a;

[0209] (5) polishing the surface of the housing portion 10 facing the housing portion 10 and the side wall of the protrusion 20;

[0210] (6) performing frosting etching to form a flash sand structure on the surface of the shell portion 10 facing the protrusion 20, the surface of the protrusion 20 facing away from the shell portion 10, and the side wall of the protrusion 20; and

[0211] (7) The flash sand structure of the surface of the protrusion 20 facing away from the housing portion 10 is smoothed off to make the surface of the protrusion 20 facing away from the housing portion 10 a smooth surface.

[0212] The images of the ridge 24 of the protrusion 20 of the shell 100 prepared in Example 1 and Comparative Example 1 were taken using a confocal microscope. The confocal microscope image of the outer periphery of the protrusion 20 of the shell 100 of Example 1 is as follows: Fig.13 and Fig.14 As shown, the confocal microscope image of the outer periphery of the protrusion 20 of the housing 100 of comparative example 1 is as shown in FIG. Fig.15 and Fig.16 shown.

[0213] It can be seen from the confocal microscope images of Example 1 and Comparative Example 1 that the step difference at the ridge 24 of the protrusion 20 of the shell 100 prepared by the preparation method of the present application is smaller, the ridge 24 of the protrusion 20 has a better standing effect, and the shell 100 has a better appearance effect.

[0214] See also Figures 17 to 19 The embodiment of the present application further provides an electronic device 700, which includes a display screen 710, a housing 100 described in the embodiment of the present application, and a processor 730. The housing 100 and the display screen 710 are disposed opposite to each other, and the protrusion 20 is disposed away from the display screen; the processor 730 is located between the housing 100 and the display screen 710, and the processor 730 is electrically connected to the display screen 710, and is used to control the display screen 710 to display.

[0215] The electronic device 700 of the embodiment of the present application may be, but is not limited to, a portable electronic device 700 such as a mobile phone, a tablet computer, a laptop computer, a desktop computer, a smart bracelet, a smart watch, an e-reader, a game console, etc.

[0216] For a detailed description of the housing 100 , please refer to the description of the corresponding part of the above embodiment, which will not be repeated here.

[0217] Optionally, the display screen 710 may be, but is not limited to, one or more of a liquid crystal display screen, a light emitting diode display screen (LED display screen), a micro light emitting diode display screen (Micro LED display screen), a sub-millimeter light emitting diode display screen (Mini LED display screen), an organic light emitting diode display screen (OLED display screen), etc.

[0218] Optionally, the processor 730 includes one or more general-purpose processors, wherein the general-purpose processor can be any type of device capable of processing electronic instructions, including a central processing unit (CPU), a microprocessor, a microcontroller, a main processor, a controller, and an ASIC, etc. The processor 730 is used to execute various types of digital storage instructions, such as software or firmware programs stored in a memory, which enables the computing device to provide a wide variety of services.

[0219] Optionally, the electronic device 700 of the present application further includes a memory 750. The memory 750 is electrically connected to the processor 730 and is used to store program codes required for the processor 730 to run, program codes required for controlling the display screen 710, display content of the display screen 710, and the like.

[0220] Optionally, the memory 750 may include a volatile memory (Volatile Memory), such as a random access memory (Random Access Memory, RAM); the memory 750 may also include a non-volatile memory (NVM), such as a read-only memory (Read-Only Memory, ROM), a flash memory (Flash Memory, FM), a hard disk drive (Hard Disk Drive, HDD) or a solid-state drive (SSD). The memory 750 may also include a combination of the above-mentioned types of memory.

[0221] In some embodiments, the electronic device 700 of the embodiment of the present application further includes a middle frame 720 and a camera module 770, wherein the middle frame 720 is disposed between the display screen 710 and the housing 100, and the side of the middle frame 720 is exposed to the housing 100 and the display screen 710. The middle frame 720 and the housing 100 enclose a housing space (not shown), and the housing space is used to accommodate the processor 730, the memory 750 and the camera module 770. The camera module 770 is electrically connected to the processor 730 for shooting under the control of the processor 730.

[0222] Optionally, the camera module 770 can take pictures through the protrusion 20 on the shell 100, that is, the camera module 770 in this embodiment is a rear camera module 770.

[0223] It can be understood that the electronic device 700 described in this embodiment is merely a form of electronic device 700 used by the shell 100, and should not be understood as a limitation on the electronic device 700 provided in this application, nor should it be understood as a limitation on the shell 100 provided in each embodiment of this application.

[0224] Mentioning "embodiment" and "implementation method" in this application means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrases in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments. In addition, it should also be understood that the features, structures or characteristics described in the various embodiments of the present application can be arbitrarily combined to form another embodiment that does not deviate from the spirit and scope of the technical solution of the present application, if there is no contradiction between them.

[0225] Finally, it should be noted that the above implementation modes are only used to illustrate the technical solution of the present application and are not intended to limit it. Although the present application has been described in detail with reference to the above preferred implementation modes, a person of ordinary skill in the art should understand that the technical solution of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present application.

Claims

1. A housing, characterized in that: include: Housing portion; as well as A protrusion, wherein the protrusion is protruding from one side of the shell portion, and the protrusion has a first surface and a second surface that are connected, wherein the first surface is a surface of the protrusion that faces away from the shell portion, and the second surface is a side wall of the protrusion, and the second surface is a concave arc surface, and an angle α between a tangent surface of the second surface at a connection with the first surface and the first surface is in a range of 122°≤α≤132°.

2. The housing according to claim 1, characterized in that A curvature radius of an end of the second surface connected to the first surface is smaller than a curvature radius of an end of the second surface connected to the housing portion.

3. The housing according to claim 1, characterized in that The curvature radius of the second surface from one end connected to the first surface to one end away from the first surface first gradually decreases and then gradually increases.

4. The housing according to claim 1, characterized in that The minimum curvature radius R of the second surface is in the range of 1.7 mm≤R≤2.7 mm.

5. The housing according to claim 1, characterized in that The first surface and the second surface intersect to form an edge line, and the step difference △h of the edge line is in the range of 5μm≤△h≤15μm.

6. The housing according to claim 1, characterized in that The surface of the shell portion facing the protruding portion is a third surface, and a line width w of an orthographic projection of the second surface on the third surface is in a range of 2 mm ≤ w ≤ 2.4 mm.

7. The housing according to any one of claims 1 to 6, characterized in that: Along the arrangement direction of the shell portion and the protruding portion, the height h of the protruding portion is in the range of 0.93 mm≤h≤1.03 mm.

8. The housing according to claim 6, characterized in that The first surface is a smooth surface, and the second surface and the third surface are rough surfaces.

9. A method for preparing a shell, characterized in that: include: Providing a substrate, wherein the substrate has a predetermined surface; forming a protective layer on a portion of the predetermined surface of the substrate; as well as The area on the preset surface of the substrate except the protective layer is thinned to obtain the shell, wherein the shell includes a shell portion and a protruding portion, the protruding portion is protruding on one side of the shell portion, the protruding portion has a first surface and a second surface connected to each other, the first surface is the surface of the protruding portion facing away from the shell portion, the second surface is the side wall of the protruding portion, the second surface is a concave arc surface, and the angle α between the tangent surface of the second surface at the connection with the first surface and the first surface is in the range of 122°≤α≤132°.

10. The method for preparing a housing according to claim 9, characterized in that: The pencil hardness of the protective layer ranges from 2H to 3H.

11. The method for preparing a housing according to claim 9, characterized in that: The thickness of the protective layer ranges from 30 μm to 60 μm, and the size of the protective layer is 2 mm to 3 mm larger than the size of the protruding portion.

12. The method for preparing a housing according to claim 9, characterized in that: After thinning the area on the predetermined surface of the substrate except for the protective layer, the preparation method further comprises: Disposing a shielding cover on the protective layer, wherein the shielding cover is retracted by 0.1 mm to 0.5 mm compared to the protruding portion; and The surface of the shell portion facing the protruding portion and the side wall of the protruding portion are polished.

13. The method for preparing a housing according to claim 12, characterized in that: After the thinning treatment is performed on the area on the predetermined surface of the substrate except for the protective layer, and before the polishing is performed on the surface of the shell part facing the protruding part and the side wall of the protruding part; The preparation method further comprises: The side wall of the protrusion is finely polished by a grinding rod, and the Rockwell hardness of the grinding rod ranges from 60° to 70°.

14. The method for preparing a housing according to claim 12, characterized in that: After thinning the area on the predetermined surface of the substrate except for the protective layer, the preparation method further comprises: Performing a surface roughening treatment on the surface of the shell portion facing the protruding portion and the side wall of the protruding portion, so that the surface of the shell portion facing the protruding portion and the second surface are rough surfaces; and The protective layer is removed.

15. An electronic device, characterized in that: include: Display screen; The shell according to any one of claims 1 to 8 or the shell made by the method for making the shell according to any one of claims 9 to 14, wherein the shell is arranged opposite to the display screen, and the protrusion is arranged away from the display screen; as well as A processor is located between the housing and the display screen, and the processor is electrically connected to the display screen to control the display screen to display.

Images