Glass shell, preparation method thereof and electronic equipment

Abstract

The invention provides a glass shell, a preparation method thereof and electronic equipment. The glass shell is provided with a plurality of glass concave parts, the plurality of glass concave parts are located on the same surface of the glass shell, the depths of the plurality of glass concave parts are gradually changed in the preset direction, and the preset direction is parallel to the direction of the plane where the glass shell is located. According to the embodiment of the invention, the depths of the plurality of glass concave parts of the glass shell are gradually changed, so that the texture pattern formed by the plurality of glass concave parts can present a margless gradual change effect from no to existence.

Description

Technical Field

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

[0002] As people's consumption level improves, people's requirements for the appearance of electronic devices such as mobile phones and tablet computers are becoming more and more diverse. However, the appearance of the shells of existing electronic devices is relatively simple and tends to be homogenized, which easily leads to aesthetic fatigue of consumers and poor user experience. Summary of the invention

[0003] In view of the above problems, an embodiment of the present application provides a glass shell, wherein the depths of a plurality of glass recesses vary gradually, so that a texture pattern composed of the plurality of glass recesses can present a borderless gradual effect from nothing to something.

[0004] A first aspect of the present application provides a glass shell, wherein the glass shell has a plurality of glass recessed portions, wherein the plurality of glass recessed portions are located on the same surface of the glass shell, and the depths of the plurality of glass recessed portions gradually change along a preset direction, wherein the preset direction is a direction parallel to the plane where the glass shell is located.

[0005] A second aspect of the present application provides a method for preparing a glass casing, which includes:

[0006] Providing a glass substrate having a surface to be etched;

[0007] forming a mask layer on the surface to be etched of the glass substrate, wherein the mask layer has a hollow portion so that the surface to be etched is partially exposed to the mask layer; and

[0008] The glass substrate with the mask layer is gradually immersed in an etching solution along a preset direction at a preset rate to etch the portion of the surface to be etched exposed to the mask layer to obtain the glass shell, wherein the glass shell has a plurality of glass recessed portions, the plurality of glass recessed portions are located on the same surface of the glass shell, and the depths of the plurality of glass recessed portions change gradually along a preset direction, wherein the preset direction is a direction parallel to the plane where the glass shell is located.

[0009] A third aspect of the present application provides an electronic device, comprising:

[0010] Display screen;

[0011] The glass housing according to the first aspect of the present application is arranged opposite to the display screen; and

[0012] A processor is located between the glass shell and the display screen, and the processor is electrically connected to the display screen to control the display screen to display.

[0013] The glass shell of the embodiment of the present application has a plurality of glass recessed parts, the plurality of glass recessed parts are located on the same surface of the glass shell, and the depths of the plurality of glass recessed parts change gradually along a preset direction, wherein the preset direction is a direction parallel to the plane where the glass shell is located. Thus, the texture pattern composed of the plurality of glass recessed parts can present a borderless gradual change effect from nothing to something, and can smoothly transition from nothing to something, enriching the texture pattern and texture effect of the glass shell and enhancing the three-dimensional effect of the appearance of the glass shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] 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.

[0015] Figure 1 Schematic diagram of the structure of a glass shell according to an embodiment of the present application.

[0016] Figure 2 The glass shell of an embodiment of the present application is Figure 1 Schematic diagram of the cross-sectional structure in the AA direction.

[0017] Figure 3 The glass shell of another embodiment of the present application is Figure 1 Schematic diagram of the cross-sectional structure in the AA direction.

[0018] Figure 4 It is a schematic diagram of the planar structure of a glass shell according to an embodiment of the present application.

[0019] Figure 5 It is a schematic diagram of the planar structure of a glass shell according to another embodiment of the present application.

[0020] Figure 6 The glass shell of another embodiment of the present application is Figure 1 Schematic diagram of the cross-sectional structure in the AA direction.

[0021] Figure 7 It is a schematic diagram of the planar structure of a glass shell according to another embodiment of the present application.

[0022] Figure 8 The glass shell of an embodiment of the present application is Figure 7 Schematic diagram of the cross-sectional structure in the BB direction.

[0023] Fig. 9 It is a schematic diagram of a process of preparing a glass shell according to an embodiment of the present application.

[0024] Fig.10 It is a structural schematic diagram of a preparation process of a glass shell according to an embodiment of the present application.

[0025] Fig.11 It is a schematic diagram of the process of a method for preparing a mask layer according to an embodiment of the present application.

[0026] Fig.12 It is a schematic structural diagram of an etching device according to an embodiment of the present application.

[0027] Fig.13 1 is a topographical diagram of a glass shell (upper diagram) and a depth gradient diagram of a glass recessed portion (lower diagram) according to an embodiment of the present application.

[0028] Fig.14 It is a topographical diagram of a glass shell (upper diagram) and a depth gradient diagram of a glass recessed portion (lower diagram) according to another embodiment of the present application.

[0029] Fig.15 It is a schematic diagram of the structure of an electronic device according to an embodiment of the present application.

[0030] Fig.16 It is a schematic diagram of a partial exploded structure of an electronic device according to an embodiment of the present application.

[0031] Fig.17 It is a circuit block diagram of an electronic device according to an embodiment of the present application.

[0032] Description of reference numerals:

[0033] 100-glass shell, 110-glass recessed portion, 111-reflective surface, 130-preset surface, 120-first end, 140-second end, 100'-glass substrate, 110'-surface to be etched, 130'-mask layer, 131'-hollow portion, 200'-etching equipment, 210'-etching groove, 220'-carrying platform, 230'-liquid storage tank, 240'-acid-resistant pump, 300-electronic device, 310-display screen, 320-middle frame, 330-processor, 350-memory, 370-camera module, 101-light-transmitting portion. DETAILED DESCRIPTION

[0034] 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.

[0035] 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.

[0036] The technical solutions in the embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0037] 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.

[0038] The etching of three-dimensional texture on the glass surface usually adopts yellow light etching process, first forming a photoresist layer with a hollow micro-pattern, and then chemical etching is performed to evenly reduce the thickness of the glass, and by controlling the rate of side etching, a large number of cone-shaped three-dimensional microstructures (i.e., 3D microstructures) are formed on the glass surface to form diffuse reflection, thereby forming a frosted effect. However, the microscopic texture formed on the glass surface by the existing three-dimensional etching technology is of equal depth, the texture depth is highly consistent, and the appearance is too flat.

[0039] In addition, when a gradual changing and disappearing (abbreviated as fading) texture effect is required on the glass surface, the visual fading texture effect is usually achieved by adjusting the size and density of the texture. However, due to the limitation of exposure accuracy and the consistency of texture depth everywhere, the fading effect produced by pattern gradient has an unnatural transition and cannot produce a borderless gradient effect from nothing to something.

[0040] In view of this, the embodiment of the present application provides a glass shell. The glass shell of the present application can be applied to portable electronic devices such as mobile phones, tablet computers, laptops, desktop computers, smart bracelets, smart watches, e-readers, game consoles, etc. The glass shell of the embodiment of the present application can be a 2D structure, a 2.5D structure, a 3D structure, etc. The glass shell of the present application can be a middle frame, a back cover (battery cover), a decorative piece, etc. of an electronic device. In the following embodiments of the present application, the glass shell is described in detail using the back cover of a mobile phone as an example, which should not be understood as a limitation on the glass shell of the embodiment of the present application.

[0041] See also Figures 1 to 3 The present invention provides a glass housing 100, wherein the glass housing 100 has a plurality of glass recessed portions 110, wherein the plurality of glass recessed portions 110 are located on the same surface of the glass housing 100, and the depths of the plurality of glass recessed portions 110 are increased along a preset direction (such as Figure 2 and Figure 3 The preset direction is a direction parallel to the plane where the glass shell 100 is located.

[0042] The term “plurality” refers to greater than or equal to two. The “depth of the glass recess 110 ” refers to the distance between the lowest point and the highest point of the glass recess along the thickness direction of the glass housing 100 .

[0043] It can be understood that the plurality of glass recessed portions 110 are obtained by etching on a surface to be processed of the glass substrate, so that the plurality of glass recessed portions 110 are located on the same surface of the glass housing 100 .

[0044] Optionally, the preset direction may be from one end to the other end of the glass housing 100, or between a position of the glass housing 100 away from the edge and the edge of the glass housing 100, or gradually changing between two positions spaced apart on the glass housing 100. It is understandable that the glass housing 100 may be provided with the glass recessed portion 110 on the entire surface, or only on a partial surface, and the design may be based on the appearance effect to be achieved by the glass housing 100, and the present application does not make any specific limitation.

[0045] Optionally, the gradual change includes at least one of gradually decreasing, gradually increasing, first gradually decreasing and then gradually increasing, and first gradually increasing and then gradually decreasing.

[0046] It can be understood that the multiple glass recessed parts 110 are arranged along a preset direction, and along the preset direction, from one end to the other end, the depth of the glass recessed parts 110 changes gradually, for example, along the preset direction: the depth of the multiple glass recessed parts 110 gradually decreases, the depth of the multiple glass recessed parts 110 gradually increases, and the depth of the multiple glass recessed parts 110 includes a gradually decreasing part and a gradually increasing part. It can also be understood that along the preset direction, the depths of different glass recessed parts 110 are different, and the depths change gradually; along the vertical preset direction, the depths of different glass recessed parts 110 can be the same or different.

[0047] In a specific embodiment, there are three sequentially arranged glass recesses 110 along a preset direction, and when the depths of the multiple glass recesses 110 gradually decrease along the preset direction, then along the preset direction: the depth of the first glass recess 110 is greater than the depth of the second glass recess 110, and the depth of the second glass recess 110 is greater than the depth of the third glass recess 110. In another embodiment, there are five sequentially arranged glass recesses 110 along the preset direction, and when the depths of the multiple glass recesses 110 first gradually decrease and then gradually increase along the preset direction, then along the preset direction: the depth of the first glass recess 110 is greater than the depth of the second glass recess 110, the depth of the second glass recess 110 is greater than the depth of the third glass recess 110, the depth of the third glass recess 110 is less than the depth of the fourth glass recess 110, and the depth of the fourth glass recess 110 is less than the depth of the fifth glass recess 110. In this application Figure 2 In the embodiment of the present invention, the depths of the plurality of glass recessed portions 110 gradually increase along the preset direction. Figure 3 In the embodiment, the depths of the plurality of glass recessed portions 110 along the preset direction first gradually increase and then gradually decrease.

[0048] The glass housing 100 of the embodiment of the present application has a plurality of glass recessed parts 110, which are located on the same surface of the glass housing 100, and the depths of the plurality of glass recessed parts 110 change gradually along a preset direction, wherein the preset direction is a direction parallel to the plane where the glass housing 100 is located. Thus, the texture pattern composed of the plurality of glass recessed parts 110 can present a borderless gradual change effect from nothing to something, and can smoothly transition from nothing to something, enriching the texture pattern and texture effect of the glass housing 100, and enhancing the three-dimensional effect of the appearance of the glass housing 100.

[0049] The texture of the shell is realized by using nano-imprinting or transfer technology on the substrate, but the texture formed by the transfer is prone to bubbles or whitening, and the texture layer and the substrate are prone to debonding after a period of use, and the transfer can only be performed on a flat shell (i.e., a 2D shell), and it is difficult to perform on a three-dimensional shell (3D shell). The glass recessed portion 110 of the glass shell 100 of the embodiment of the present application is directly formed on the surface of the glass substrate, which will not have problems such as whitening, bubbling or debonding, and has better light transmittance and better wear resistance, so that the glass shell 100 has a better appearance and service life; in addition, compared with the embossed or transferred texture, the glass recessed portion has a better flashing effect; furthermore, the glass recessed portion 110 of the present application can be directly formed on the three-dimensional structure, so that when the glass shell 100 is a 3D structure with a bent portion, the bent portion of the glass shell 100 also has a glass recessed portion 110, so that the glass shell 100 has a better appearance.

[0050] Optionally, the thickness of the glass shell 100 is 0.3mm to 1mm; specifically, the thickness of the glass shell 100 can be, but is not limited to, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, etc. When the glass shell 100 is too thin, it cannot play a good supporting and protective role, and the mechanical strength cannot meet the requirements of the electronic device shell. When the glass shell 100 is too thick, the weight of the electronic device is increased, the feel of the electronic device is affected, and the user experience is not good. In the embodiment of the present application, when it comes to the numerical range a to b, if not specifically 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.

[0051] Optionally, in some embodiments, the plurality of glass recessed portions 110 are dot-shaped textures (eg Figure 4 As shown), the plurality of glass recessed portions 110 are arranged at intervals, or the plurality of glass recessed portions 110 are connected to form a linear texture (as shown Figure 5 or a portion of the plurality of glass recessed portions 110 are connected to form a linear texture, and another portion of the plurality of glass recessed portions 110 are dot textures arranged at intervals.

[0052] It can be understood that when a plurality of glass recessed portions 110 are connected to form a linear texture, the number of the linear texture can be one or more, and the plurality of linear textures can be connected or separately arranged.

[0053] Optionally, the extension direction of the linear texture may be the same as or different from the preset direction, for example, the extension direction of the linear texture intersects the preset direction. It can be understood that the extension direction of the linear texture may include at least one of a straight line direction and a curved line direction. In other words, the linear texture may be at least one of a straight line texture and a curved line texture.

[0054] Optionally, the linear texture may be extended according to a preset rule, for example, a Fresnel texture, a CD texture, a parallel linear texture, a mesh texture, etc. The dot texture may be arranged in an array, randomly arranged, or arranged according to a preset rule, etc. The dot texture may be a snowflake texture, a hexagonal pyramid texture, a flash sand texture, etc. In addition, when the glass recessed portion 110 is a dot texture, the protrusion enclosed by the recessed glass recessed portion 110 may be designed to be a snowflake protrusion, a hexagonal pyramid protrusion, a flash sand protrusion, etc.

[0055] In this embodiment, through the design of dot texture and line texture, the multiple glass recessed portions 110 on the glass shell 100 can present more diverse gradient textures, and the clarity of the glass recessed portions 110 can change gradually along a preset direction, gradually changing between clarity and blur, thereby increasing the diversity of the texture pattern on the surface of the glass shell 100 and improving the appearance of the glass shell 100.

[0056] Please see again Figure 2 and Figure 3 Optionally, the glass shell 100 further comprises a reflective surface 111 enclosing the glass recessed portion 110, and the size of the reflective surface 111 of the multiple glass recessed portions 110 changes gradually along the preset direction. The glass shell 100 comprises a reflective surface 111, and the reflective surface 111 can reflect light (such as visible light), so that the glass recessed portion 110 presents a flashing texture effect, and the size of the reflective surface 111 gradually decreases or gradually increases, so that along the preset direction, the flashing degree of the multiple glass recessed portions 110 gradually decreases or gradually increases, and a gradual transition from a higher flashing degree to a lower flashing degree can be achieved, and finally a transition to a non-flashing state can be achieved.

[0057] Optionally, each of the glass recessed portions 110 has at least two reflective surfaces 111, and the at least two reflective surfaces 111 are connected to enclose the glass recessed portion 110. It can be understood that the concavity and convexity of the surface microstructure of the glass housing 100 are related to the selected reference plane. In the embodiment of the present application, the plane formed by the end surfaces of the multiple glass recessed portions 110 is taken as the reference plane, so it is called the glass recessed portion 110, and a convex portion is formed between adjacent glass recessed portions 110.

[0058] Optionally, the glass housing 100 further has a preset surface 130 facing away from the plurality of glass recessed portions 110, and the angle α between the reflective surface 111 and the preset surface 130 is in the range of 30°≤α≤60°. Specifically, the angle α between the reflective surface 111 and the preset surface 130 may be, but is not limited to, 30°, 35°, 40°, 45°, 50°, 55°, 60°, etc. When the angle α between the reflective surface 111 and the preset surface 130 is too small (i.e., the slope of the reflective surface 111 is too small), the flash of the glass recessed portion 110 is reduced, and during preparation, the etching liquid needs to be controlled to have a higher side etching rate on the glass substrate (i.e., the etching rate along the extended plane of the glass shell 100 or the etching rate perpendicular to the thickness direction), which increases the difficulty of process preparation; when the angle α between the reflective surface 111 and the preset surface 130 is too large (i.e., the slope of the reflective surface 111 is too large), it is close to vertical etching, which will also reduce the flash of the glass recessed portion 110, and at this time, the slope of the reflective surface 111 is steeper, which increases the scratching feel of the glass recessed portion 110. When the angle between the reflective surface 111 and the preset surface 130 is any value between 30° and 60°, the glass recessed portion 110 can have a higher flash, and in addition, the glass shell 100 can also have a better feel.

[0059] It can be understood that although the angle between the reflective surface 111 and the preset surface 130 can be any value between 30° and 60°, in this embodiment, when preparing the glass housing 100, the glass substrate is placed in the same system of etching liquid, and the ratio of the vertical etching rate to the side etching rate of the etching liquid on different parts of the glass substrate is equivalent, so the angles between the reflective surface 111 and the preset surface 130 of the multiple glass recessed parts 110 on the same glass housing 100 are basically consistent.

[0060] Optionally, along the preset direction, the reflectivity of the glass shell 100 at the positions of the multiple glass recesses 110 changes gradually; when the depth of the multiple glass recesses 110 gradually decreases along the preset direction, the reflectivity of the glass shell 100 at the positions of the multiple glass recesses 110 gradually decreases. It can be understood that when the depth of the multiple glass recesses 110 gradually increases along the preset direction, the reflectivity of the glass shell 100 at the positions of the multiple glass recesses 110 gradually increases.

[0061] When the depths of the multiple glass recessed portions 110 gradually decrease along a preset direction, the sizes of the reflective surfaces 111 of the multiple glass recessed portions 110 gradually decrease, and the reflectivity of the multiple glass recessed portions 110 to light (such as visible light) gradually decreases along the preset direction, so that the sparkle of the multiple glass recessed portions 110 gradually decreases along the preset direction, and a gradual change in the sparkle can be achieved on the same glass shell 100, that is, the sparkle gradually increases, or the sparkle gradually decreases, or the sparkle of the multiple glass recessed portions 110 includes both a gradually increasing part and a gradually decreasing part.

[0062] Optionally, the ends of the multiple glass recessed parts 110 away from the preset surface 130 are flush; the ends of the multiple glass recessed parts 110 close to the preset surface 130 are gradually spaced from the preset surface 130. In other words, the ends of the multiple glass recessed parts 110 away from the preset surface 130 are located in the same plane; the surface formed by the ends of the multiple glass recessed parts 110 close to the preset surface 130 is inclined to the preset surface 130.

[0063] It can be understood that the glass recessed portion 110 is a recessed texture, and the ends of the multiple glass recessed portions 110 facing away from the preset surface 130 are flush, which can be understood as the ends of the reflective surfaces 111 enclosing the multiple glass recessed portions 110 facing away from the preset surface 130 are located in the same plane or flush.

[0064] When the ends of the plurality of glass recesses 110 away from the preset surface 130 are not in the same plane, the surface of the glass housing 100 having the plurality of glass recesses 110 has a strong scratching feel. In this embodiment, the ends of the plurality of glass recesses 110 away from the preset surface 130 are flush, so that the surface of the glass housing 100 having the plurality of glass recesses 110 has a better feel and reduces the scratching feel caused by the glass recesses 110.

[0065] See also Figure 6 Optionally, along the preset direction, the depth h of the plurality of glass recesses 110 has a gradual change range of: 0<h≤20μm. It can be understood that the depth of the plurality of glass recesses 110 can be gradually changed between any two values ​​between 0 and 20μm.

[0066] For example, the depth of the plurality of glass recessed portions 110 along the preset direction gradually changes between 0 and 5 μm. For another example, the depth of the plurality of glass recessed portions 110 along the preset direction gradually changes between 0 and 8 μm. For another example, the depth of the plurality of glass recessed portions 110 along the preset direction gradually changes between 0 and 10 μm. For another example, the depth of the plurality of glass recessed portions 110 along the preset direction gradually changes between 0 and 13 μm. For another example, the depth of the plurality of glass recessed portions 110 along the preset direction gradually changes between 0 and 15 μm. For another example, the depth of the plurality of glass recessed portions 110 along the preset direction gradually changes between 0 and 18 μm. For another example, the depth of the plurality of glass recessed portions 110 along the preset direction gradually changes between 2 μm and 10 μm, etc.

[0067] In the present embodiment, the maximum value of the depths of the plurality of glass recesses 110 is too large (i.e., the depth of the glass recess 110 having the largest value among the depths of the plurality of glass recesses 110), which greatly increases the tolerance requirements for the photoresist, thereby increasing the difficulty of the etching process. In addition, the tolerance of the photoresist may not be able to meet the requirements of etching at such a large depth, and the photoresist may be completely peeled off from the glass substrate before the corresponding etching depth is reached, and etching at a greater depth cannot be achieved. Furthermore, the depths of the plurality of glass recesses 110 are too large, which reduces the mechanical strength of the glass housing 100.

[0068] See also Figure 7 and Figure 8 In some embodiments, the multiple glass recesses 110 are arranged in an array, and the glass shell 100 includes a first end 120 and a second end 140 that are spaced apart. Along the direction from the first end 120 to the second end 140, the depths of the multiple glass recesses 110 gradually become shallower and then gradually become deeper, wherein the preset direction is the direction from the first end 120 to the second end 140.

[0069] Optionally, the glass shell 100 has a long side or a short side, and the preset direction is parallel to or inclined with the long side or the short side. The inclination angle can be adjusted according to actual needs, so that the glass shell 100 with different inclination angles can be designed.

[0070] In this embodiment, the depth of the glass shell 100 gradually increases from a certain position away from the edge to both sides, so that the glass shell 100 presents a three-dimensional gradient flashing texture on both sides along one direction. In addition, by changing the positions of the first end 120 and the second end 140, the position and direction of the gradient area of ​​the glass shell 100 are adjusted, so that the glass shell 100 can have a variety of three-dimensional textures with gradients in different preset directions, so that the texture on the surface of the glass shell 100 can be more diversified and more designable.

[0071] Optionally, the minimum width w of the orthographic projection of the glass recessed portion 110 on the preset surface 130 is in the range of 5 μm ≤ w ≤ 10 μm. Specifically, the minimum width w of the orthographic projection of the glass recessed portion 110 on the preset surface 130 may be, but is not limited to, 5 μm, 5.5 μm, 6 μm, 6.5 μm, 7 μm, 7.5 μm, 8 μm, 8.5 μm, 9 μm, 9.5 μm, 10 μm, etc. When the minimum width of the orthographic projection of the glass recessed portion 110 on the preset surface 130 is too small, the area of ​​the reflective surface 111 surrounding the glass recessed portion 110 is too small, which reduces the overall flash effect of the glass shell 100. In addition, the difficulty of the exposure process is increased, and it may be difficult to achieve a lower exposure accuracy; when the minimum width of the orthographic projection of the glass recessed portion 110 on the preset surface 130 is too large, the width of the groove is too wide, even visible to the naked eye, and the texture fineness is poor, which affects the appearance effect of the surface texture of the glass shell 100.

[0072] Optionally, when the plurality of glass recessed portions 110 are arranged at intervals, the minimum spacing s between two adjacent glass recessed portions 110 is in the range of 40 μm ≤ s ≤ 60 μm. Specifically, the minimum spacing s between two adjacent glass recessed portions 110 may be, but is not limited to, 40 μm, 42 μm, 44 μm, 46 μm, 48 μm, 50 μm, 52 μm, 54 μm, 56 μm, 58 μm, 60 μm, etc. When the minimum spacing s between two adjacent glass recesses 110 is too large, the arrangement of the multiple glass recesses 110 is too dispersed, affecting the gradient effect of the multiple glass recesses 110 presenting the gradient flash texture, and reducing the density of the reflective surface 111 on the glass shell 100, thereby reducing the fineness of the texture and affecting the appearance of the glass shell 100; when the minimum spacing s between two adjacent glass recesses 110 is too small, although the density of the reflective surface 111 is large, the area of ​​each reflective surface 111 is too small, which also affects the flash effect of the glass shell 100.

[0073] Optionally, along the preset direction, the haze of the glass shell 100 changes gradually. It can be understood that the deeper the depth of the glass recessed portion 110 on the glass shell 100, the greater the haze of the glass shell 100. Conversely, the shallower the depth of the glass recessed portion 110 on the glass shell 100, the smaller the haze of the glass shell 100.

[0074] It can be understood that the gradual change of the haze of the glass shell 100 may include that the haze of the glass shell 100 gradually decreases along a preset direction, or the haze of the glass shell 100 gradually increases, or the haze of the glass shell 100 includes a gradually increasing portion and a gradually decreasing portion.

[0075] In this embodiment, the haze of the glass shell 100 changes gradually, so that when a color layer or other decorative film layer is provided on the surface of the glass shell 100 away from the plurality of glass recessed portions 110, the visibility of the color layer or the decorative film layer can be seen through the glass shell 100 and changes gradually, for example, gradually changes between clear and blurry.

[0076] Optionally, along the preset direction, the gradual change range of the haze Ha of the glass shell 100 is: 0<Ha≤70%. The gradual change range of the haze Ha of the glass shell 100 is: 1%≤Ha≤70%. It can be understood that the haze of the glass shell 100 can change between any two values ​​between 0 and 70%. Specifically, the haze Ha of the glass shell 100 can change gradually between any two values ​​of the following values, but is not limited to: 0, 5%, 10%, 20%, 25%, 30%, 35%, 40%, 50%, 60%, 70%, etc. For example, along the preset direction, the haze of the glass shell 100 changes gradually between 0 and 20%; for another example, along the preset direction, the haze of the glass shell 100 changes gradually between 0 and 30%; for another example, along the preset direction, the haze of the glass shell 100 changes gradually between 0 and 40%; for another example, along the preset direction, the haze of the glass shell 100 changes gradually between 0 and 50%; for another example, along the preset direction, the haze of the glass shell 100 changes gradually between 0 and 50%; For example, along the preset direction, the haze of the glass shell 100 changes gradually between 0% and 60%; for another example, along the preset direction, the haze of the glass shell 100 changes gradually between 0% and 70%; for another example, along the preset direction, the haze of the glass shell 100 changes gradually between 5% and 30%; for another example, along the preset direction, the haze of the glass shell 100 changes gradually between 10% and 40%; for another example, along the preset direction, the haze of the glass shell 100 changes gradually between 20% and 60%, etc.

[0077] In this embodiment, the haze of the glass shell 100 changes gradually between 0 and 70%, so that when a color layer or other decorative film layer is provided on the surface of the glass shell 100 away from the plurality of glass recessed parts 110, the clarity of the color layer or decorative film layer can be seen through the glass shell 100, which changes gradually, for example, gradually changes between clear and blurry, and can present more varied appearance effects, thereby improving the designability of the glass shell 100. The wider the gradual change range of the haze Ha of the glass shell 100, the smoother or smoother the gradual change from nothing to something of the texture pattern and the flash composed of the plurality of glass recessed parts 110 of the glass shell 100, so that the glass shell 100 has a better gradual texture and gradual flash effect. The narrower the gradual change range of the haze Ha of the glass shell 100, the stronger the sense of gradual gradient from nothing to something of the texture pattern and the flash composed of the plurality of glass recessed parts 110 of the glass shell 100, and the less smooth or smooth the gradual change of the texture and the flash, which affects the appearance effect of the glass shell 100. When the upper limit of the gradual change range of the haze of the glass housing 100 is too high, the overall appearance of the glass housing 100 is too hazy, resulting in poor visual effects.

[0078] Optionally, along the preset direction, the light transmittance of the glass shell 100 changes gradually. It can be understood that the deeper the depth of the glass recessed portion 110 on the glass shell 100, the greater the haze of the glass shell 100 and the lower the light transmittance. Conversely, the shallower the depth of the glass recessed portion 110 on the glass shell 100, the smaller the haze of the glass shell 100 and the greater the light transmittance.

[0079] In this embodiment, the light transmittance of the glass shell 100 changes gradually, so when a color layer or other decorative film layer is provided on the surface of the glass shell 100 away from the plurality of glass recessed portions 110, the visibility of the color layer or the decorative film layer can be seen through the glass shell 100 and changes gradually, for example, gradually changes between clear and blurred, thereby improving the designability of the appearance of the glass shell 100.

[0080] Optionally, along the preset direction, the light transmittance T of the glass housing 100 has a gradual change range of 30%≤T≤92%. Specifically, along the preset direction, the light transmittance T of the glass housing 100 may be gradually changed between any two values ​​such as but not limited to 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 92%, etc. The smaller the light transmittance T of the glass housing 100, the more foggy the overall appearance of the glass housing 100 is, and the poor visual effect. On the same glass shell 100 , the wider the gradual change range of the light transmittance T of the glass shell 100 , the smoother the gradual change from low light transmittance to high light transmittance of the glass shell 100 , and the better the gradual change effect; on the same glass shell 100 , the narrower the gradual change range of the light transmittance T of the glass shell 100 , the stronger the gradual change from low light transmittance to high light transmittance of the glass shell 100 , affecting the gradual change effect.

[0081] Optionally, along the preset direction, the roughness Ra of the surface of the glass shell 100 having the multiple glass recessed portions 110 changes gradually, and when the depth of the multiple glass recessed portions 110 gradually decreases along the preset direction, the roughness Ra of the surface of the glass shell 100 having the multiple glass recessed portions 110 gradually decreases along the preset direction. It can be understood that the deeper the depth of the glass recessed portion 110, the greater the roughness of the glass shell 100 at the corresponding position. Conversely, the shallower the depth of the glass recessed portion 110, the smaller the roughness of the glass shell 100 at the corresponding position.

[0082] It can be understood that the gradual change in the roughness of the glass shell 100 may include that the roughness of the glass shell 100 gradually decreases along a preset direction, or the roughness of the glass shell 100 gradually increases, or the roughness of the glass shell 100 includes a gradually increasing portion and a gradually decreasing portion.

[0083] In this embodiment, the roughness of the glass shell 100 changes gradually, so that the glitter of the texture pattern formed by the multiple glass recessed parts 110 changes gradually, and the feel of the surface of the glass shell 100 changes gradually, thereby improving the playability of the glass shell 100.

[0084] Optionally, the range of the roughness Ra of the surface of the glass shell 100 with the plurality of glass recessed parts 110 along the preset direction is: 0.04μm≤Ra≤6μm. Further, the range of the roughness Ra of the surface of the glass shell 100 with the plurality of glass recessed parts 110 along the preset direction is: 0.04μm≤Ra≤4μm. Specifically, along the preset direction, the roughness Ra of the surface of the glass shell 100 with the plurality of glass recessed parts 110 may be, but is not limited to, 0.04μm, 0.3μm, 0.6μm, 1.0μm, 1.3μm, 1.5μm, 1.8μm, 2μm, 2.2μm, 2.5μm, 2.7μm, 3μm, 3.5μm, 4μm, 4.5μm, 5μm, 5.5μm, 6μm, etc., and gradually changes between any two values. The wider the range of the gradual change of the roughness Ra of the surface with the multiple glass recesses 110 on the same glass shell 100, the smoother or smoother the gradual change from nothing to something of the texture pattern and the flash formed by the multiple glass recesses 110 of the glass shell 100, so that the glass shell 100 has a better gradual texture and gradual flash effect. The narrower the range of the gradual change of the roughness Ra of the surface with the multiple glass recesses 110 on the same glass shell 100, the stronger the sense of gradual gradient of the texture pattern and the flash formed by the multiple glass recesses 110 of the glass shell 100, the less smooth or smooth the gradual change of the texture and the flash, which affects the appearance of the glass shell 100. Along the preset direction, the upper limit of the gradual change of the roughness Ra of the surface of the glass shell 100 having the plurality of glass recessed portions 110 is not easy to be too large. When the roughness of the glass shell 100 away from the preset surface 130 is greater, the flash effect of the glass shell 100 is better. However, when the roughness of the preset surface 130 is too large, the scratching feeling of the preset surface 130 is increased. In addition, if the depth of the glass recessed portion 110 is too deep, the requirement for the etching liquid resistance of the photoresist is increased, which may not be achieved. Furthermore, if the roughness of the preset surface 130 is too large and the depth of the glass recessed portion 110 is too large, the mechanical strength of the glass shell 100 is reduced.

[0085] Optionally, the glass housing 100 is obtained by wet etching a glass substrate. The glass housing 100 is prepared by wet etching, which facilitates assembly line operation and improves the preparation efficiency of the glass housing 100.

[0086] Optionally, the glass housing 100 is made of a glass substrate through wet etching, including:

[0087] 1) disposing a mask layer on the surface to be etched of the glass substrate, wherein the mask layer has a hollow portion so that the surface to be etched is partially exposed to the mask layer; and

[0088] 2) gradually immersing the glass substrate in an etching solution at a preset rate along the preset direction to etch the portion of the surface to be etched exposed to the mask layer, so that the etching solution enters the hollow portion, and etches the position of the glass substrate corresponding to the hollow portion to obtain the multiple glass recessed portions 110, thereby obtaining the glass shell 100.

[0089] It can be understood that after the glass substrate with the mask layer is immersed in the etching solution, the etching solution passes through the hollow part and etches the position of the glass substrate corresponding to the hollow part to obtain the multiple glass recessed parts 110. When the glass substrate with the mask layer is gradually immersed in the etching solution at a preset rate, the etching time of the part of the glass substrate that is immersed in the etching solution first is longer, and the depth of the glass recessed part 110 formed by etching is deeper, and the etching time of the part of the glass substrate that is immersed in the etching solution later is shorter, and the depth of the glass recessed part 110 formed by etching is shallower, thereby making the depth of the multiple glass recessed parts 110 gradually change along the preset direction (for example, gradually become smaller). In this way, a glass shell 100 with a gradient texture and a texture fading effect can be obtained. In addition, the obtained glass recessed part 110 has a gradual and fading flashing effect along the preset direction.

[0090] The glass shell 100 of the embodiment of the present application can be prepared by the method described in the following embodiment of the present application, and 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 glass shell 100 of the present application, and should not be understood as limiting the glass shell 100 provided by the embodiment of the present application.

[0091] See also Fig. 9 and Fig.10 The present application also provides a method for preparing a glass housing 100, which includes:

[0092] S201, providing a glass substrate 100', wherein the glass substrate 100' has a surface 110' to be etched;

[0093] Optionally, the glass substrate 100 ′ may be, but is not limited to, at least one of silicate glass, borate glass, phosphate glass, and the like.

[0094] S202, forming a mask layer 130' on the surface 110' to be etched of the glass substrate 100', wherein the mask layer 130' has a hollow portion 131', so that the surface 110' to be etched is partially exposed by the mask layer 130'; and

[0095] It can be understood that the surface to be etched 110 ′ is partially exposed to the mask layer 130 ′ through the hollow portion 131 ′.

[0096] Optionally, the hollow portion 131' is a linear hollow portion 131' or a dot-shaped hollow portion 131', and the linear hollow portion 131' can be regarded as a plurality of dot-shaped hollow portions 131' connected together; when the hollow portion 131' is a dot-shaped hollow portion 131' and there are multiple of them, the multiple dot-shaped hollow portions 131' can be arranged at intervals.

[0097] S203, gradually immersing the glass substrate 100' having the mask layer 130' into an etching solution along a preset direction at a preset rate, so as to etch the portion of the surface 110' to be etched that is exposed from the mask layer 130', so as to obtain the glass housing 100, wherein the glass housing 100 has a plurality of glass recessed portions 110, and the plurality of glass recessed portions 110 are located on the same surface of the glass housing 100, and the depths of the plurality of glass recessed portions 110 change gradually along a preset direction, wherein the preset direction is a direction parallel to the plane where the glass housing 100 is located.

[0098] Optionally, before the glass substrate 100' is immersed in the etching solution, all surfaces of the glass substrate 100' except the surface to be etched 110' (i.e., surfaces other than the surface provided with the mask layer 130') are coated with a whole layer of etching liquid resistant layer without hollow portions 131' or through holes, such as an ink layer or a photoresist layer.

[0099] Optionally, the etching solution comprises, by mass fraction, 0.5% to 3% hydrofluoric acid (HF), 2% to 5% sulfuric acid (H2SO4) and 3% to 8% ammonium bifluoride (NH4F), with the remainder being water. In a specific embodiment, the etching solution comprises, by mass fraction, 1% hydrofluoric acid (HF), 3% sulfuric acid (H2SO4) and 5% ammonium bifluoride (NH4F), with the remainder being water.

[0100] It can be understood that after the glass substrate 100' with the mask layer 130' is immersed in the etching solution, the etching solution passes through the hollow portion 131' and etches the position of the glass substrate 100' corresponding to the hollow portion 131' to form the multiple glass recessed portions 110. When the glass substrate 100' with the mask layer 130' is gradually immersed in the etching solution at a preset rate, the etching time of the portion of the glass substrate 100' immersed in the etching solution first is longer, and the depth of the glass recessed portion 110 formed by etching is deeper, and the etching time of the portion of the glass substrate 100' immersed in the etching solution later is shorter, and the depth of the glass recessed portion 110 formed by etching is shallower, thereby making the depth of the multiple glass recessed portions 110 gradually change along the preset direction (for example, gradually become smaller).

[0101] In some embodiments, after S203 , the method for preparing the glass housing 100 of the embodiment of the present application further includes: stripping the mask layer 130 ′ so that the mask layer 130 ′ completely falls off from the glass housing 100 .

[0102] For detailed description of the same characteristic parts of this embodiment as those of the above embodiment, such as the glass housing 100 and the glass recessed portion 110 , please refer to the above embodiment, which will not be repeated here.

[0103] In the method for preparing the glass shell 100 of the embodiment of the present application, during preparation, the glass substrate 100' is gradually immersed in the etching solution along a preset direction and at a preset angle, so that the etching time of the portion of the glass substrate 100' immersed in the etching solution first is longer, and the depth of the glass recessed portion 110 formed by etching is deeper, and the etching time of the portion of the glass substrate 100' immersed in the etching solution later is shorter, and the depth of the glass recessed portion 110 formed by etching is shallower, thereby making the depths of the multiple glass recessed portions 110 gradually change along the preset direction, so that the texture pattern composed of the multiple glass recessed portions 110 of the glass substrate 100' can present a borderless gradual change effect from nothing to something, and can smoothly transition from nothing to something, thereby enriching the texture pattern and texture effect of the glass shell 100, and enhancing the three-dimensional effect of the appearance of the glass shell 100.

[0104] See also Fig.11 Optionally, in S202, a mask layer 130' is formed on the surface 110' to be etched of the glass substrate 100', wherein the mask layer 130' has a hollow portion 131', so that the surface 110' to be etched is partially exposed to the mask layer 130', including:

[0105] S2021, forming a photoresist layer on the surface to be etched of the glass substrate 100';

[0106] Optionally, a layer of photoresist is sprayed or coated on the surface to be etched of the glass substrate 100 ′, and soft baking is performed to remove the solvent in the photoresist to form a photoresist layer.

[0107] Optionally, the photoresist solution may be a positive photoresist solution or a negative photoresist solution. The positive photoresist solution may be, but not limited to, o-azidequinone photoresist; the negative photoresist solution may be, but not limited to, cinnamate photoresist.

[0108] S2022, partially exposing the photoresist layer;

[0109] Specifically, a photomask with a hollow pattern is disposed on the photoresist layer, and the photoresist layer is partially exposed by non-contact exposure.

[0110] S2023, developing the exposed photoresist layer to remove part of the photoresist layer to form a patterned photoresist layer; and

[0111] Optionally, the photoresist layer is developed with a developer to develop away a portion of the photoresist in the photoresist layer to form a patterned photoresist layer.

[0112] S2024 , hard baking (also called hardening) the patterned photoresist layer to obtain a mask layer 130 ′ having a hollow portion 131 ′.

[0113] Optionally, hard baking is performed at a temperature of 120° C. to 160° C. to solidify and cross-link the components in the patterned photoresist layer to stabilize the pattern on the patterned photoresist layer and form a mask layer 130 ′ having a hollow portion 131 ′.

[0114] Specifically, the hard baking temperature may be, but is not limited to, 120°C, 125°C, 130°C, 135°C, 140°C, 145°C, 150°C, 155°C, 160°C, etc. If the hard baking temperature is too low, the photoresist will not undergo sufficient cross-linking reaction, the degree of cross-linking will be insufficient, the acid resistance will be poor, and it will be easy to peel off or fall off prematurely during the etching process, and the required etching depth will not be achieved; if the hard baking temperature is too high, the photoresist will be easily deformed, and the edge of the photoresist layer near the hollow portion 131' will not be steep. After etching, the line width of the glass recessed portion 110 will be narrowed, the edge will be uneven, and other problems will occur, affecting the etching precision and accuracy.

[0115] It can be understood that in this embodiment, the entire photoresist layer is hard-baked, and the hard-baking temperature and hard-baking time at various locations on the photoresist layer are kept consistent. Therefore, the degree of curing at various locations on the formed mask layer 130' and the adhesion on the glass substrate 100' are equivalent or the same.

[0116] Optionally, in S203, the step of gradually immersing the glass substrate 100' having the mask layer 130' into an etching solution along a preset direction at a preset rate comprises:

[0117] At a preset rate V1 of 20 mm / min≤V1≤40 mm / min, the glass substrate 100 ′ having the mask layer 130 ′ is gradually immersed in the etching solution along a preset direction, so that the portion of the glass substrate 100 ′ soaked in the etching solution gradually increases.

[0118] In other words, the preset rate V1 is 2 cm / min≤V1≤4 cm / min.

[0119] Specifically, the preset rate V1 may be, but is not limited to, 20 mm / min, 23 mm / min, 25 mm / min, 28 mm / min, 30 mm / min, 33 mm / min, 35 mm / min, 38 mm / min, 40 mm / min, etc. If the preset rate is too high, the time for the glass substrate 100' to be immersed in the etching solution as a whole is too short, the gradual difference in the depth of the multiple glass recesses 110 formed is too small, and the gradually disappearing texture effect and the gradually disappearing flash effect formed are not obvious; when the preset rate is too low, the depth of the glass recess 110 formed by the first immersion end of the glass substrate 100' is too deep, which affects the mechanical strength of the manufactured glass shell 100. In addition, the gradual difference in the depth of the multiple glass recesses 110 formed is too large, and the gradient of the texture gradually disappearing effect and the flash gradually disappearing effect is large, which affects the visual effect of the glass shell 100.

[0120] Optionally, along the thickness direction of the glass substrate 100', the etching rate of the etching liquid on the glass substrate 100' (i.e., vertical etching rate) is V2; along the direction perpendicular to the thickness direction, the etching rate of the etching liquid on the glass substrate 100' (i.e., side etching rate or lateral etching rate) is V3, wherein 0.6≤V2 / V3≤1.7. In other words, during etching, the ratio of the ablation rate V2 of the glass substrate 100' in the thickness direction to the ablation rate V3 in the lateral direction is in the range of 0.6≤V2 / V3≤1.7.

[0121] It can be understood that the thickness direction is perpendicular to the preset direction.

[0122] Specifically, V2 / V3 can be, but is not limited to, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, etc.

[0123] In this embodiment, if the ratio V2 / V3 of the vertical etching rate to the side etching rate is too small, the angle α between the reflective surface 111 of the obtained glass recess 110 and the preset surface 130 is too small, which reduces the flash of the glass recess 110. In addition, if the vertical etching rate is too small, the depth of the obtained glass recess 110 is too shallow, and it takes a longer time to reach the same etching depth. The tolerance requirement of the photoresist is too high. When the required depth is reached, the photoresist layer may have fallen off, which affects the glass obtained. The morphology of the recessed portion 110 affects the fading texture and fading flash effect of the manufactured glass shell 100; if the ratio of the vertical etching rate to the side etching rate is too large, the angle α between the reflective surface 111 of the obtained glass recessed portion 110 and the preset surface 130 is too large, which also reduces the flash of the glass recessed portion 110. In addition, if the vertical etching rate is too large, the depth of the glass recessed portion 110 is etched too deeply, which reduces the mechanical strength of the glass shell 100 and improves the scratching feel of the glass shell 100.

[0124] Optionally, along the thickness direction of the glass substrate 100', the etching rate V2 of the etching solution on the glass substrate 100' is in the range of 1 μm / min≤V2≤3 μm / min. Specifically, the vertical etching rate V2 of the glass substrate 100' may be, but is not limited to, 1 μm / min, 1.2 μm / min, 1.5 μm / min, 1.8 μm / min, 2 μm / min, 2.2 μm / min, 2.5 μm / min, 2.8 μm / min, 3 μm / min, etc. If the vertical etching rate is too low, the depth of the obtained glass recessed portion 110 is too shallow, and it takes a longer time to reach the same etching depth. The tolerance requirement for the photoresist is too high. When the required depth is reached, the photoresist layer may have fallen off, affecting the morphology of the obtained glass recessed portion 110, thereby affecting the fading texture and fading flash effect of the obtained glass shell 100; if the vertical etching rate is too high, the angle α between the reflective surface 111 of the obtained glass recessed portion 110 and the preset surface 130 is too large, which also reduces the flash of the glass recessed portion 110. In addition, if the vertical etching rate is too high, the depth of the glass recessed portion 110 is etched too deep, which reduces the mechanical strength of the glass shell 100 and improves the scratching feel of the glass shell 100.

[0125] Optionally, in a direction perpendicular to the thickness direction, the etching rate V3 of the etching solution on the glass substrate 100' is in the range of 1.5 μm / min≤V3≤4 μm / min. Specifically, the side etching rate V3 of the glass substrate 100' may be, but is not limited to, 1.5 μm / min, 1.8 μm / min, 2.0 μm / min, 2.3 μm / min, 2.5 μm / min, 2.7 μm / min, 3.0 μm / min, 3.3 μm / min, 3.5 μm / min, 3.7 μm / min, 4 μm / min, etc. If the side etching rate is too low, the slope of the formed glass recessed portion 110 is too steep, and the angle between the reflective surface 111 and the preset surface 130 is too large, which reduces the flash effect of the glass recessed portion 110, affects the fading flash effect of the glass shell 100, and improves the scratching feel of the glass shell 100; if the side etching rate is too high, the slope of the formed glass recessed portion 110 is too small, which also reduces the flash effect of the glass recessed portion 110, and the photoresist layer is peeled off too quickly, which reduces the depth of the glass recessed portion 110.

[0126] In addition, when both the vertical etching rate and the side etching rate are too fast, it means that the glass substrate 100 ′ reacts too fast with the etching solution, and it is difficult to control the crystal stability of the protrusions formed between the glass recesses 110 , affecting the appearance of the manufactured glass housing 100 .

[0127] Optionally, the ratio V1 / V2 between the rate (ie, the preset rate) V1 of the glass substrate 100' being immersed in the etching solution and the vertical etching rate V2 of the glass substrate 100' is in the range of: 6.67×10 3 ≤V1 / V2≤40×10 3 Specifically, V1 / V2 may be, but is not limited to, 6.67×10 3 , 8×10 3 , 10×10 3 , 15×10 3 , 20×10 3 , 25×10 3 ,30×10 3 ,35×10 3 , 40×10 3If V1 / V2 is too small, it means that the immersion rate of the glass substrate 100' is too slow, and the depth of the glass recessed portion 110 formed at the first immersion end of the glass substrate 100' is too deep, which affects the mechanical strength of the manufactured glass shell 100. In addition, the gradient difference of the depths of the multiple glass recessed portions 110 formed is too large, and the gradient of the texture fading effect and the flash fading effect is large, which affects the visual effect of the glass shell 100; if V1 / V2 is too large, it means that the immersion rate of the glass substrate 100' is too fast, and the time for the entire glass substrate 100' to be immersed in the etching solution is too short, and the gradient difference of the depths of the multiple glass recessed portions 110 formed is too small, and the formed fading texture effect and fading flash effect are not obvious.

[0128] Optionally, the step of gradually immersing the glass substrate 100' having the mask layer 130' into an etching solution along a preset direction at a preset rate comprises:

[0129] The glass substrate 100 ′ having the mask layer 130 ′ is gradually immersed in an etching solution with a temperature T in the range of 15° C. ≤ T ≤ 25° C. along a preset direction at a preset rate.

[0130] Further, the temperature of the etching solution is in the range of 18°C≤T≤21°C. Specifically, the temperature of the etching solution may be, but is not limited to, 15°C, 16°C, 17°C, 18°C, 19°C, 20°C, 21°C, 22°C, 23°C, 24°C, 25°C, etc. If the temperature of the etching solution is too high, the glass substrate 100' reacts with the etching solution too quickly (i.e., both the vertical etching rate and the side etching rate are too fast), and it is difficult to control the stability of the crystal form of the protrusions formed between the formed glass recesses 110, and the solvent and hydrofluoric acid in the etching solution evaporate too quickly, causing the drug efficacy to fail too quickly, which is not conducive to the stable production of the glass shell 100; if the temperature of the etching solution is too low, it takes too long to reach the predetermined etching depth, and the energy consumption is too large, and the etching solution has a relatively low solubility in the reaction product, which adheres to the surface of the glass substrate 100', and it is easy to cause the produced glass shell 100 to have a local heterochromatic phenomenon, affecting the appearance of the glass shell 100.

[0131] Optionally, the etching time T of the glass substrate 100' is in the range of 4min≤T≤10min. Specifically, the etching time of the glass substrate 100' may be, but is not limited to, 4min, 5min, 6min, 7min, 8min, 9min, 10min, etc. If the etching time of the glass substrate 100' is too short, the etching depth is too shallow, and the texture effect and flash effect of the glass shell 100 are not obvious. If the etching time is too long, the depth of the glass recess 110 is too deep, affecting the mechanical strength of the glass, and the requirements for the photoresist layer are too high, and the photoresist layer may have been peeled off, and deeper texture etching cannot be achieved.

[0132] Optionally, the step of gradually immersing the glass substrate 100' having the mask layer 130' into the etching solution along a preset direction includes at least one of the following methods:

[0133] The glass substrate 100' having the mask layer 130' is placed in an etching tank, and an etching liquid is gradually injected into the etching tank so that the etching liquid gradually immerses the glass substrate 100' at a preset rate;

[0134] immersing one end of the glass substrate 100' having the mask layer 130' into the etching solution, and gradually tilting the glass substrate 100' having the mask layer 130' so that the glass substrate 100' is gradually immersed in the etching solution at a preset rate; and

[0135] The glass substrate 100' with the mask layer 130' is suspended in an etching tank, and one end of the glass substrate 100' with the mask layer 130' is immersed in the etching solution. The etching tank is moved so that the etching solution in the etching tank gradually immerses the glass substrate 100' at a preset rate.

[0136] In this embodiment, the glass substrate 100' is gradually immersed, so that the position where the glass substrate 100' is immersed in the etching liquid first has the longest reaction time and the deepest etching depth, and the position where the etching liquid is immersed later has a gradually decreasing reaction time and a gradually shallower etching depth, thereby forming a gradient texture in which the etching depth gradually becomes shallower along a preset direction (i.e., from one end to the other end of the glass substrate 100'). This method is simple, easy to operate, and has low cost, and does not increase the additional cost of the equipment for preparing the glass shell 100. In addition, the tilt angle of the glass substrate 100' can be controlled, so that the gradient area of ​​the manufactured glass shell 100 can be controlled at any position of the glass shell 100.

[0137] In some embodiments, using Fig.12The etching device 200' shown etches the glass substrate 100'. The etching device 200' comprises an etching tank 210', a supporting platform 220', a liquid storage tank 230' and an acid-resistant pump 240'; the etching tank 210' is used to place etching liquid to etch the glass substrate 100', the supporting platform 220' is arranged in the etching tank 210' and is used to carry the glass substrate 100', the liquid storage tank 230' is connected to the etching tank 210', the liquid storage tank 230' is used to temporarily store the etching liquid, and the acid-resistant pump 240' is used to drive the etching liquid to flow between the liquid storage tank 230' and the etching tank 210' to adjust the height of the etching liquid in the etching tank 210'. Before etching, the glass substrate 100' is set on the rack, and the rack with the glass substrate 100' is placed on the carrier 220' of the etching tank 210'. At this time, the etching liquid level is at the lower end of the glass substrate 100', and then the etching liquid in the storage tank 230' is slowly pumped into the etching tank 210' by the acid-resistant pump 240'. The liquid level of the etching liquid in the etching tank 210' rises slowly over time, and finally reaches the set position (i.e., the position where the glass substrate 100' is immersed at all required times), and then the etched glass substrate 100' is pulled out as a whole by the manipulator, and immersed in a clean water tank to wash away the acid. After the etching is completed, the acid-resistant pump 240' quickly pumps the etching liquid in the etching tank 210' back into the storage tank 230', and the liquid level drops to the initial position (i.e., below the carrier 220') so as to carry out the next round of etching. By gradually increasing the level of the etching solution, the bottom of the glass substrate 100' reacts with the etching solution for the longest time and has the deepest etching depth. As time goes by and the etching solution level rises, the top of the glass substrate 100' begins to gradually react and forms a deep and gradually concave texture from bottom to top. The morphology of the glass shell 100 made by the method of this embodiment is shown in FIG. Fig.13 As shown in the above figure and the depth gradient diagram of the glass recessed portion 110 of the glass shell 100 is as shown in Fig.13 As shown in the figure below.

[0138] In other embodiments, when it is necessary to prepare a glass housing 100 in which the depth of the glass recessed portion 110 gradually becomes shallower from one end to the other end and then gradually becomes deeper, the glass housing 100 may be formed by: Fig.12The etching device 200' shown is implemented by the following operations: before etching, the glass substrate 100' is placed on a rack (not shown), and the rack with the glass substrate 100' is placed on the carrier 220' of the etching tank 210'. At this time, the etching liquid level is at the lower end of the glass substrate 100', and then the etching liquid in the storage tank 230' is slowly pumped into the etching tank 210' by the acid-resistant pump 240'. The liquid level of the etching solution in the etching tank 210' slowly rises over time. When the etching solution submerges the middle position of the glass substrate 100', the injection of the etching solution is stopped, the etched glass substrate 100' is taken out, and the etching solution in the etching tank 210' is pumped back to the liquid storage tank 230' so that the liquid level of the etching tank 210' is located below the carrier 220'; then the glass substrate 100' with one side etched is turned over, and the unetched end is inserted into the insert rack and placed on the carrier 220', and the etching solution in the liquid storage tank 230' is slowly pumped into the etching tank 210' again through the acid-resistant pump 240'. The liquid level of the etching solution in the etching tank 210' slowly rises over time and finally reaches the middle position of the glass substrate 100', the injection of the etching solution is stopped, and the etched glass substrate 100' is taken out and cleaned to obtain the glass shell 100. In addition, the tilt angle of the glass substrate 100' and the infiltration height of the etching solution can be controlled, so that the gradient area of ​​the manufactured glass shell 100 can be controlled at any position and any direction of the glass shell 100, for example, the position of one corner of the glass shell 100. The morphology of the glass shell 100 manufactured by the method of this embodiment is shown in FIG. Fig.14 As shown in the above figure and the depth gradient diagram of the glass recessed portion 110 of the glass shell 100 is as shown in Fig.14 As shown in the figure below.

[0139] See also Figures 15 to 17 The embodiment of the present application further provides an electronic device 300, which includes a display screen 310, a glass housing 100 described in the embodiment of the present application, and a processor 330. The glass housing 100 and the display screen 310 are arranged opposite to each other; the processor 330 is located between the glass housing 100 and the display screen 310, and the processor 330 is electrically connected to the display screen 310 for controlling the display screen 310 to display.

[0140] The electronic device 300 of the embodiment of the present application may be, but is not limited to, a portable electronic device 300 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.

[0141] For a detailed description of the glass housing 100 , please refer to the description of the corresponding part of the above embodiment, which will not be repeated here.

[0142] Optionally, the display screen 310 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.

[0143] Optionally, the processor 330 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 330 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.

[0144] Optionally, the electronic device 300 of the present application further includes a memory 350. The memory 350 is electrically connected to the processor 330 and is used to store program codes required for the processor 330 to run, program codes required for controlling the display screen 310, display content of the display screen 310, and the like.

[0145] Optionally, the memory 350 may include a volatile memory (Volatile Memory), such as a random access memory (Random Access Memory, RAM); the memory 350 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 350 may also include a combination of the above-mentioned types of memory.

[0146] In some embodiments, the electronic device 300 of the embodiment of the present application further includes a middle frame 320 and a camera module 370, wherein the middle frame 320 is disposed between the display screen 310 and the glass shell 100, and the side of the middle frame 320 is exposed to the glass shell 100 and the display screen 310. The middle frame 320 and the glass shell 100 enclose a housing space (not shown), and the housing space is used to accommodate the processor 330, the memory 350 and the camera module 370. The camera module 370 is electrically connected to the processor 330, and is used to shoot under the control of the processor 330.

[0147] Optionally, the glass housing 100 has a light-transmitting portion 101, and the camera module 370 can shoot through the light-transmitting portion 101 on the glass housing 100, that is, the camera module 370 in this embodiment is a rear camera module 370. It can be understood that in other embodiments, the light-transmitting portion 101 can be set on the display screen 310, that is, the camera module 370 is a front camera module 370. In the schematic diagram of this embodiment, the light-transmitting portion 101 is illustrated as an opening. In other embodiments, the light-transmitting portion 101 may not be an opening, but a light-transmitting material, such as plastic, glass, etc.

[0148] It can be understood that the electronic device 300 described in this embodiment is only one form of the electronic device 300 used by the glass shell 100, and should not be understood as a limitation on the electronic device 300 provided in this application, nor should it be understood as a limitation on the glass shell 100 provided in each embodiment of this application.

[0149] 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 places 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, provided that there is no contradiction between them.

[0150] 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 glass housing, characterized in that: The glass shell has a plurality of glass recessed parts, the plurality of glass recessed parts are located on the same surface of the glass shell, and the depths of the plurality of glass recessed parts change gradually along a preset direction, wherein the preset direction is a direction parallel to the plane where the glass shell is located.

2. The glass housing according to claim 1, characterized in that: Along the preset direction, the depth h of the plurality of glass recessed portions gradually changes in a range of 0<h≤20 μm.

3. The glass housing according to claim 1, characterized in that: Along the preset direction, the haze of the glass shell changes gradually.

4. The glass housing according to claim 3, characterized in that: The gradual change range of the haze Ha of the glass shell is: 0<Ha≤70%.

5. The glass housing according to claim 1, wherein: Along the preset direction, the roughness Ra of the surface of the glass shell having the multiple glass recessed portions changes gradually. When the depth of the multiple glass recessed portions gradually decreases along the preset direction, the roughness Ra of the surface of the glass shell having the multiple glass recessed portions gradually decreases along the preset direction.

6. The glass housing according to claim 5, characterized in that: The range of the roughness Ra of the surface of the glass shell having the plurality of glass recessed portions along the preset direction is: 0.04 μm≤Ra≤6 μm.

7. The glass housing according to claim 1, characterized in that: Along the preset direction, the reflectivity of the glass shell at the positions of the multiple glass recessed parts changes gradually; when the depths of the multiple glass recessed parts gradually decrease along the preset direction, the reflectivity of the glass shell at the positions of the multiple glass recessed parts gradually decreases.

8. The glass housing according to claim 1, wherein: The glass shell has a preset surface away from the multiple glass recessed parts, and the minimum width w of the glass recessed part's orthographic projection on the preset surface is in the range of 5μm≤w≤10μm; the multiple glass recessed parts are arranged at intervals, and the minimum spacing s between two adjacent glass recessed parts is in the range of 40μm≤s≤6μm.

9. The glass housing according to any one of claims 1 to 8, characterized in that: The glass housing has a preset surface facing away from the plurality of glass recessed parts, and ends of the plurality of glass recessed parts facing away from the preset surface are flush.

10. The glass housing according to any one of claims 1 to 8, characterized in that: The multiple glass recessed portions are arranged in an array, and the glass shell includes a first end and a second end that are spaced apart. Along the direction from the first end to the second end, the depths of the multiple glass recessed portions first gradually become shallower and then gradually become deeper, wherein the preset direction is the direction from the first end to the second end.

11. The glass housing according to any one of claims 1 to 8, characterized in that: The glass shell is obtained by wet etching a glass substrate.

12. The glass housing according to claim 11, characterized in that: The glass shell is made of a glass substrate through wet etching and comprises: Disposing a mask layer on the surface to be etched of the glass substrate, wherein the mask layer has a hollow portion so that the surface to be etched is partially exposed to the mask layer; and The glass substrate is gradually immersed in an etching solution at a preset rate along the preset direction to etch the portion of the surface to be etched exposed to the mask layer to obtain the glass shell.

13. A method for preparing a glass housing, characterized in that: include: Providing a glass substrate having a surface to be etched; forming a mask layer on the surface to be etched of the glass substrate, wherein the mask layer has a hollow portion so that the surface to be etched is partially exposed to the mask layer; as well as The glass substrate with the mask layer is gradually immersed in an etching solution along a preset direction at a preset rate to etch the portion of the surface to be etched exposed to the mask layer to obtain the glass shell, wherein the glass shell has a plurality of glass recessed portions, the plurality of glass recessed portions are located on the same surface of the glass shell, and the depths of the plurality of glass recessed portions change gradually along the preset direction, wherein the preset direction is a direction parallel to the plane where the glass shell is located.

14. The method for preparing a glass casing according to claim 13, characterized in that: The step of gradually immersing the glass substrate having the mask layer in an etching solution along a preset direction at a preset rate comprises: At a preset rate V1 of 20 mm / min≤V1≤40 mm / min, the glass substrate with the mask layer is gradually immersed in the etching liquid along a preset direction, so that the portion of the glass substrate soaked in the etching liquid gradually increases.

15. The method for preparing a glass casing according to claim 14, characterized in that: The etching rate of the glass substrate by the etching liquid is V2 along the thickness direction of the glass substrate; the etching rate of the glass substrate by the etching liquid is V3 along the direction perpendicular to the thickness direction, wherein 0.6≤V2 / V3≤1.

7.

16. The method for preparing a glass casing according to claim 14, characterized in that: Along the thickness direction of the glass substrate, the etching rate V2 of the etching solution on the glass substrate is in the range of: 1 μm / min≤V2≤3 μm / min; In a direction perpendicular to the thickness direction, the etching rate V3 of the etching solution on the glass substrate is in the range of 1.5 μm / min≤V3≤4 μm / min.

17. The method for preparing a glass casing according to any one of claims 13 to 16, characterized in that: The step of gradually immersing the glass substrate having the mask layer in an etching solution along a preset direction at a preset rate comprises: The glass substrate with the mask layer is gradually immersed in an etching solution with a temperature T in the range of 15° C.≤T≤25° C. along a preset direction at a preset rate.

18. The method for preparing a glass casing according to claim 14, characterized in that: The step of gradually immersing the glass substrate having the mask layer into the etching solution along a preset direction includes at least one of the following methods: Placing the glass substrate with the mask layer in an etching tank, and gradually injecting etching liquid into the etching tank so that the etching liquid gradually immerses the glass substrate at a preset rate; Immersing one end of the glass substrate with the mask layer into the etching solution, and gradually tilting the glass substrate with the mask layer so that the glass substrate is gradually immersed in the etching solution at a preset rate; as well as The glass substrate with the mask layer is suspended in an etching tank, and one end of the glass substrate with the mask layer is immersed in the etching solution. The etching tank is moved so that the etching solution in the etching tank gradually immerses the glass substrate at a preset rate.

19. An electronic device, characterized in that: include: Display screen; The glass housing according to any one of claims 1 to 12, wherein the glass housing is disposed opposite to the display screen; as well as A processor is located between the glass shell and the display screen, and the processor is electrically connected to the display screen to control the display screen to display.

Images