CN114040615B

CN114040615B - Shell, preparation method thereof and electronic equipment

Info

Publication number: CN114040615B
Application number: CN202111364085.8A
Authority: CN
Inventors: 李云刚
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-11-17
Filing date: 2021-11-17
Publication date: 2023-11-10
Anticipated expiration: 2041-11-17
Also published as: CN114040615A

Abstract

The application provides a shell, a preparation method thereof and electronic equipment. The housing of the present application includes: the glass comprises a first glass layer, a second glass layer and a third glass layer which are sequentially laminated; the first glass layer comprises a first sub-main body part and a first sub-side part which are connected in a bending way; the second glass layer has at least one color and comprises a second sub-main body part and a second sub-side part which are connected in a bending way; the third glass layer comprises a third sub-main body part and a third sub-side part which are connected in a bending way; the first sub-main body part, the second sub-main body part and the third sub-main body part are sequentially stacked to form a main body part, the first sub-side part, the second sub-side part and the third sub-side part are sequentially stacked to form side parts, the side parts are connected with the main body part in a bending way, and the side parts are arranged around the outer periphery of the main body part; the thickness of at least part of the side portion is greater than the thickness of the main body portion along the lamination direction of the first glass layer, the second glass layer and the third glass layer. The shell of the application has color and has no color step difference between the main body part and the side part.

Description

Shell, preparation method thereof and electronic equipment

Technical Field

The application relates to the field of electronics, in particular to a shell, a preparation method thereof and electronic equipment.

Background

The glass has better glossiness, and better texture and hand feeling when being applied to the shell of the electronic equipment, so the glass is widely applied to the shell of the electronic equipment, such as a rear cover. In order to make the glass shell have more colors, a color layer or a coating layer is usually coated, however, when the glass shell is in a three-dimensional structure (3D structure), a black line often appears at the bending position, and the appearance effect of the electronic device is directly affected.

Disclosure of Invention

In view of the above, embodiments of the present application provide a housing having a color and no color level difference between a main body portion and a side portion.

The embodiment of the application provides a shell, which comprises a first glass layer, a second glass layer and a third glass layer which are sequentially laminated; the first glass layer comprises a first sub-main body part and a first sub-side part which are connected in a bending way; the second glass layer has at least one color and comprises a second sub-main body part and a second sub-side part which are connected in a bending way; the third glass layer comprises a third sub-main body part and a third sub-side part which are connected in a bending way; the first sub-main body part, the second sub-main body part and the third sub-main body part are sequentially stacked to form a main body part, the first sub-side part, the second sub-side part and the third sub-side part are sequentially stacked to form a side part, the side part is connected with the main body part in a bending way, and the side part is arranged around the outer periphery of the main body part; and at least part of the side part has a thickness greater than that of the main body part along the lamination direction of the first glass layer, the second glass layer and the third glass layer.

In addition, the embodiment of the application also provides a shell, which comprises:

a first glass layer;

the second glass layer is arranged on the surface of the first glass layer, and the second glass layer has at least one color; and

a third glass layer; the third glass layer is arranged on the surface, far away from the first glass layer, of the second glass layer;

the first glass layer, the second glass layer and the third glass layer are of an integrated structure, and the thermal expansion coefficient of the second glass layer is larger than that of the first glass layer and larger than that of the third glass layer.

In addition, the embodiment of the application also provides a shell preparation method, which comprises the following steps:

providing a first glass substrate, a second glass substrate and a third glass substrate, wherein the second glass substrate has at least one color; wherein the coefficient of thermal expansion of the second glass substrate is greater than the coefficient of thermal expansion of the first glass substrate and greater than the coefficient of thermal expansion of the third glass substrate; and

and sequentially overlapping the first glass substrate, the second glass substrate and the third glass substrate, and performing die casting molding to obtain the shell.

In addition, an embodiment of the present application provides an electronic device, including:

a display assembly;

the shell is provided with a containing space and is used for bearing the display assembly; and

the circuit board assembly is arranged in the accommodating space and is electrically connected with the display assembly and used for controlling the display assembly to display.

The shell of the embodiment comprises a main body part and a side part which are connected in a bending way; the side portion is disposed around an outer periphery of the main body portion; at least part of the side parts are thicker than the main body part, so that the shell has a stereoscopic transparent visual effect and better stereoscopic impression. In addition, because the casing falls or receives the striking, the atress of main part is positive atress, and the lateral part atress is the point atress, and when the striking power is the same, the pressure that receives when the lateral part striking is greater than the pressure that receives when the main part strikes, consequently, the thickness of lateral part is greater than the thickness of main part, can improve the holistic shock resistance and the anti performance that falls of casing. Furthermore, the second glass layer has at least one color, thereby making the produced housing colored, and the color of the housing can be designed by changing the color of the second glass layer. Furthermore, the casing body is including laminating in proper order setting up in first glass layer, second glass layer and third glass layer, first glass layer the second glass layer reaches the third glass layer constitutes main part portion with the lateral part, this makes the junction transition in main part portion and lateral part even, can not present the black line, does not have colour section difference, has better visual effect.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view of a housing according to an embodiment of the application.

Fig. 2 is a schematic cross-sectional view of a housing of an embodiment of the present application taken along the direction A-A in fig. 1.

Fig. 3 is a schematic top view of a housing according to a further embodiment of the application.

Fig. 4 is a cross-sectional view (a) of the housing of the embodiment of fig. 3 taken along the direction A-A and a cross-sectional view (B) taken along the direction B-B.

Fig. 5 is a schematic top view of a housing according to a further embodiment of the application.

Fig. 6 is a cross-sectional view (a) of the housing of the embodiment of fig. 5 taken along the direction A-A and a cross-sectional view (B) taken along the direction B-B.

Fig. 7 is a schematic cross-sectional view of a housing according to still another embodiment of the present application, taken along the direction A-A in fig. 1.

Fig. 8 is an enlarged schematic view of the dashed box I of the fig. 7 embodiment of the present application.

Fig. 9 is a schematic cross-sectional view of a housing according to still another embodiment of the present application taken along the direction A-A in fig. 1.

Fig. 10 is an enlarged schematic view of the dashed box II of the embodiment of fig. 9 according to the present application.

Fig. 11 is a schematic sectional view of a housing according to still another embodiment of the present application, taken along the direction A-A in fig. 1.

Fig. 12 is a schematic cross-sectional view of a housing of a further embodiment of the present application taken along the direction A-A in fig. 1.

Fig. 13 is a flow chart of a method for manufacturing a shell according to an embodiment of the application.

Fig. 14 is a flow chart of a method for manufacturing a shell according to still another embodiment of the present application.

Fig. 15 is a schematic structural view of a die casting die according to an embodiment of the present application.

Fig. 16 is a flow chart of a method for manufacturing a housing according to still another embodiment of the present application.

Fig. 17 is a flow chart of a method for manufacturing a shell according to still another embodiment of the present application.

Fig. 18 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Fig. 19 is a schematic view of a partially exploded structure of an electronic device according to an embodiment of the present application.

Fig. 20 is a circuit block diagram of an electronic device of an embodiment of the application.

Reference numerals illustrate:

100-shell, 20-main body, 40-side, 41-first part, 42-second part, 43-third part, 44-fourth part, 101-accommodation space, 401-first surface, 401 a-first end, 402-second surface, 402 a-second end, 10-first glass layer, 10 a-first body layer, 10 b-first strengthening layer, 11-first sub-main body, 13-first sub-side, 30-second glass layer, 31-second sub-main body, 33-second sub-side, 50-third glass layer, 50 a-second body layer, 50 b-second strengthening layer, 51-third sub-main body, 53-third sub-side; 1' -first glass substrate, 2' -second glass substrate, 3' -third glass substrate, 101' -end face, 100' -die casting mold, 10' -first sub mold, 11' -concave portion, 111' -bottom surface, 113' -side surface, 30' -second sub mold, 31' -convex portion; 500-electronic device, 510-display component, 530-circuit board component, 531-processor, 533-memory.

Detailed Description

In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The terms first, second and the like in the description and in the claims and in the above-described figures are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

It should be noted that, for convenience of explanation, like reference numerals denote like components in the embodiments of the present application, and detailed descriptions of the like components are omitted in the different embodiments for brevity.

The glass has better glossiness, and better texture and hand feeling when being applied to the shell of the electronic equipment, so the glass is widely applied to the shell of the electronic equipment, such as a rear cover. In order to make the glass shell have better appearance effect, provide more choices for consumers, improve the appearance expressive force of the glass shell, a color layer or an optical coating layer can be adhered to the surface of the glass shell. And the preparation process of the glass shell is increased, so that the preparation process of the shell is more complicated. In addition, when the shell is applied to the electronic equipment, when the electronic equipment falls or is impacted, the stress of the main body part is front stress, the stress of the edge part is approximately point stress, when the impact force is the same, the pressure applied to the edge part during impact is far greater than the pressure applied to the main body part during impact, and in general, the probability of the edge part being impacted is higher than that of the main body part during impact, so that the edge part of the electronic equipment is more easily damaged due to falling or impact compared with the main body part. In order to improve mechanical properties such as impact resistance of the case, the thickness of the edge portion of the case may be made larger than that of the body portion. When the thickness of the edge portion of the case is greater than that of the main body portion of the case, mechanical properties such as impact resistance of the case can be improved. In addition, the thickness of casing is thinner, and when the thickness of marginal portion and the thickness of main part equal, obvious stereoeffect is not observed to the casing, and when the thickness of marginal portion was greater than the thickness of casing, can make to have three-dimensional penetrating visual effect, has better third dimension. However, when the glass housing is of a three-dimensional structure (3D structure) and the thickness of the edge portion and the main body portion are not equal (in other words, the edge portion and the main body portion are not equal in thickness), a color level difference occurs at the connection between the edge portion and the main body portion, and a black line is formed at the connection between the edge portion and the main body portion from different angles, which greatly affects the visual effect of the glass housing.

Referring to fig. 1 and 2, the embodiment of the application further provides a housing 100, which includes a first glass layer 10, a second glass layer 30 and a third glass layer 50 stacked in sequence; the first glass layer 10 includes a first sub-main body 11 and a first sub-side 13 which are connected by bending; the second glass layer 30 has at least one color and includes a second sub-main body 31 and a second sub-side 33 connected by bending; the third glass layer 50 includes a third sub-main body 51 and a third sub-side 53 which are connected by bending; the first sub-main body 11, the second sub-main body 31, and the third sub-main body 51 are sequentially stacked to form a main body 20, the first sub-side 13, the second sub-side 33, and the third sub-side 53 are sequentially stacked to form a side 40, the side 40 is bent and connected to the main body 20, and the side 40 is disposed around the outer periphery of the main body 20; at least a portion of the side portion 40 has a thickness greater than that of the main body portion 20 in the lamination direction of the first glass layer 10, the second glass layer 30, and the third glass layer 50. The first glass layer 10, the second glass layer 30, and the third glass layer 50 are laminated in the thickness direction.

The term "at least one" in the present application means one or more than one.

The four-bar bending strength of the shell 100 prepared by the application is more than 450MPa; the Vickers hardness is more than 450HV and the Mohs hardness is more than 6; young's modulus of 50Gpa to 100GPa.

Alternatively, the color of the second glass layer 30 may be, but not limited to, one or more of red, green, blue, orange, yellow, cyan, violet, silver, gold, etc., and may be a gradient color, and the present application is not particularly limited.

The housing 100 of the present application may be applied to portable electronic devices such as mobile phones, tablet computers, notebook computers, desktop computers, smart bracelets, smart watches, electronic readers, game consoles, and the like. Alternatively, the case 100 of the present application may be a rear cover (battery cover), a middle frame, a decorative piece, or the like of an electronic device. The housing 100 of embodiments of the present application may be a 2D structure, a 2.5D structure, a 3D structure, etc.

The housing 100 of embodiments of the present application may be used to employ 5G communications; electromagnetic induction field communication; infrared and visible light band communication, and the like.

The housing 100 of the present embodiment includes a main body portion 20 and a side portion 40 connected by bending; the side portion 40 is disposed around the outer periphery of the main body portion 20; at least a portion of the side portion 40 has a thickness greater than that of the main portion 20, so that the housing 100 of the present application has a stereoscopic effect and a better stereoscopic effect. In addition, when the housing 100 falls or is impacted, the main body 20 is stressed in the front direction, while the side 40 is stressed in the point, and when the impact forces are the same, the pressure applied to the side 40 during the impact is far greater than the pressure applied to the main body 20 during the impact, so that the thickness of the side 40 is greater than the thickness of the main body 20, and the overall impact resistance and anti-falling performance of the housing 100 can be improved. Furthermore, the second glass layer 30 has at least one color, thereby making the manufactured case 100 have a color, and the color of the case 100 can be designed by changing the color of the second glass layer 30. Furthermore, the body of the housing 100 includes the first glass layer 10, the second glass layer 30 and the third glass layer 50 that are sequentially stacked, and the first glass layer 10, the second glass layer 30 and the third glass layer 50 form the main body portion 20 and the side portion 40, so that the transition at the connection between the main body portion 20 and the side portion 40 is uniform, no black line is displayed, no color level difference exists, and a better visual effect is achieved.

In a specific embodiment, the main body 20 may be a rear cover of the electronic device, and the side 40 may be a middle frame of the electronic device.

Alternatively, the thickness of the main body 20 is uniform, and the thickness d of the main body 20 satisfies the relationship: d is more than or equal to 0.5mm and less than or equal to 0.8mm; specifically, d may be, but is not limited to, 0.5mm, 0.55mm, 0.6mm, 0.65mm, 0.7mm, 0.75mm, 0.8mm, etc. When the main body 20 is too thin, the supporting and protecting functions cannot be well achieved, and the mechanical strength cannot well meet the requirements of the relational electronic equipment shell 100, when the main body 20 is too thick, the weight of the electronic equipment is increased, the hand feeling of the electronic equipment is affected, and the user experience is poor.

Alternatively, the thickness of the end of the side portion 40 connected to the main body portion 20 is equal to the thickness of the main body portion 20; at least a portion of the side portion 40 has a thickness gradually increasing from an end to which the main body portion 20 is connected to an end distant from the main body portion 20. This may allow for a more uniform thickness transition of the housing 100 between the junction of the body portion 20 and the side portion 40, with less color step, and better visual effect.

Referring to fig. 3 and 4, in some embodiments, the side portion 40 includes a first portion 41, a second portion 42, a third portion 43 and a fourth portion 44 connected end to end in sequence, the thickness of the second portion 42 and the thickness of the fourth portion 44 are equal to the thickness of the main body portion 20, the thickness of the first portion 41 gradually increases from the end connected to the main body portion 20 to the end far from the main body portion 20, and the thickness of the third portion 43 gradually increases from the end connected to the main body portion 20 to the end far from the main body portion 20. This provides the first portion 41 and the third portion 43 of the housing 100 with a sparkling and crystal clear visual effect and with a better mechanical strength, so that they are less prone to damage when impacted. Alternatively, the lengths of the first portion 41 and the third portion 43 may be greater than the lengths of the second portion 42 and the fourth portion 44; or the lengths of the first portion 41 and the third portion 43 may be greater than the lengths of the second portion 42 and the fourth portion 44; or the lengths of the first portion 41, the second portion 42, the third portion 43, and the fourth portion 44 are all equal, the present application is not particularly limited.

Referring to fig. 5 and 6, in other embodiments, the side portion 40 includes a first portion 41, a second portion 42, a third portion 43 and a fourth portion 44 connected end to end in sequence, and the thicknesses of the first portion 41, the second portion 42, the third portion 43 and the fourth portion 44 are gradually increased from one end connected with the main portion 20 to one end far away from the main portion 20, so that the periphery of the housing 100 (i.e. the first portion 41, the second portion 42, the third portion 43 and the fourth portion 44 of the side portion 40) has a crystal clear visual effect, and has better mechanical strength, so that the housing is less prone to damage when impacted.

Optionally, the thickness D of the side portion 40 satisfies the relationship: d is more than or equal to 0.5mm and less than or equal to 3.0mm. In some embodiments, the thickness of the side portion 40 gradually transitions. In other embodiments, the thickness of the partial side 40 is uniform, with the partial side 40 gradually transitioning in thickness. As the thickness of the side portion 40 gradually transitions, the thickness of the side portion 40 may gradually transition from 0.5mm to 1.0mm; or gradually transition from 0.6mm to 1.5mm; or 0.7mm gradually transitions to 2.0mm; or 0.75mm gradually transitions to 2.4mm; alternatively, 0.8mm gradually transitions to 3.0mm, etc.

Alternatively, at least a portion of the thickness of the end of the side portion 40 remote from the main body portion 20 differs from the thickness of the end of the side portion 40 connected to the main body portion 20 by 0.5mm to 2.5mm; specifically, it may be, but is not limited to, 0.5mm, 0.8mm, 1.0mm, 1.3mm, 1.5mm, 1.8mm, 2.0mm, 2.2mm, 2.5mm, etc. When the difference between the thickness of at least a portion of the end of the side portion 40 away from the main body portion 20 and the thickness of the end of the side portion 40 connected to the main body portion 20 is less than 0.5mm, the unequal thickness effect of the side portion 40 and the main body portion 20 is not obvious, the visual effect of sparkling and crystal-clear of the side portion 40 is not obvious, and when the difference between the thickness of at least a portion of the end of the side portion 40 away from the main body portion 20 and the thickness of the end of the side portion 40 connected to the main body portion 20 is greater than 2.5mm, the manufactured case 100 is too heavy, thereby increasing the weight of the electronic device using the case 100 and being disadvantageous for the slimness of the electronic device.

In some embodiments, the first glass layer, the second glass layer, and the third glass layer are a unitary structure. This makes the transition between the side portion 40 and the main body portion 20 more uniform, and does not appear as a black line, thereby overcoming the problem of color level difference at the junction of the side portion 40 and the main body portion 20, and having better visual effect.

In some embodiments, the second glass layer has a coefficient of thermal expansion that is greater than the coefficient of thermal expansion of the first glass layer and greater than the coefficient of thermal expansion of the third glass layer. The thermal expansion coefficient of the second glass layer 30 is larger than that of the first glass layer 10 and larger than that of the third glass layer 50, the volume shrinkage of the second glass layer 30 is larger than that of the first glass layer 10 in the process of cooling the shell 100 from high temperature to room temperature, the second glass layer 30 generates inward tensile stress on the first glass layer 10, the first glass layer 10 generates outward tensile resistance on the second glass layer 30, so that a compressive stress layer is generated between the first glass layer 10 and the second glass layer 30, and in the same way, a compressive stress layer is also generated between the second glass layer 30 and the third glass layer 50, thereby improving various mechanical strengths such as the impact strength and the like of the whole manufactured shell 100.

In one embodiment, the second glass layer 30 has a coefficient of thermal expansion of 75.2X10 ^-7 The coefficient of thermal expansion of the first glass layer 10 was 7.8X10 @ DEG.C ^-7 The third glass layer 50 has a coefficient of thermal expansion of 7.8X10 ^-7 /℃。

Referring to fig. 6 again, in some embodiments, the main body 20 and the side 40 enclose a receiving space 101, the side 40 includes a first surface 401 and a second surface 402 disposed opposite to each other, the first surface 401 faces the receiving space 101, and the second surface 402 faces away from the receiving space 101. Alternatively, the first glass layer 10 may face the accommodating space 101, and the third glass layer 50 faces away from the accommodating space 101; it is also possible that the first glass layer 10 faces away from the accommodation space 101 and the third glass layer 50 faces toward the accommodation space 101.

Optionally, the first surface 401 has a first end point 401a far away from the main body 20, and an angle θ1 between a tangent line of the first surface 401 at the first end point 401a and an extending direction of the main body 20 satisfies a relationship θ1+.90 °; specifically, the angle θ1 between the tangent line of the first surface 401 at the first end 401a and the extending direction of the main body 20 may be, but is not limited to, 90 °, 88 °, 86 °, 84 °, 82 °, 80 °, or the like. When θ1 is greater than 90 °, die casting is performed, which is disadvantageous in demolding the housing 100. When θ1 is less than or equal to 90 degrees, demolding can be better performed when die casting molding is performed.

Alternatively, the perpendicular distance s from the first end point 401a to the surface of the main body portion 20 facing the accommodating space 101 satisfies the relationship: s is more than or equal to 0.5mm and less than or equal to 8mm. In particular, s may be, but is not limited to, 0.5mm, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm. When s is less than 0.5mm, the side 40 is too small in size, the effect of the uneven thickness is not obvious, and the formed shell 100 can be used basically only as a rear cover, and an additional middle frame part is required to be prepared; when s is greater than 8mm, the thickness of the electronic device increases when the case 100 is applied to the electronic device, which is disadvantageous for the ultra-thin electronic device.

Optionally, the second surface 402 has a second end 402a far from the main body 20, and an angle θ2 between a tangent line of the second end 402a of the second surface 402 and the extending direction of the main body 20 satisfies a relationship θ2+.90 °; specifically, the angle θ2 of the tangent line of the first surface 401 at the first end point 401a and the extending direction of the main body portion 20 may be, but is not limited to, 90 °, 88 °, 86 °, 84 °, 82 °, 80 °, or the like. When θ2 is greater than 90 °, die casting is performed, which is disadvantageous in demolding the housing 100. When theta 2 is less than or equal to 90 degrees, demoulding can be better carried out when die casting forming is carried out.

Optionally, the first glass layer 10 is transparent. The colorless glass has mechanical properties stronger than that of the colored glass, and the colorless glass is used as the first glass layer, so that the shell 100 has better mechanical strength, drop resistance, impact resistance, bending resistance and the like.

Optionally, the first glass layer 10 is a chemically strengthened glass layer, so that the first glass layer 10 has better mechanical strength, drop strength, impact strength, bending strength, etc., and thus the housing 100 has better mechanical strength, drop strength, impact strength, bending strength, etc. For example, the first glass layer 10 is a glass layer reinforced with a melt of at least one of potassium nitrate or sodium nitrate. Alternatively, the first glass layer 10 is light in the wavelength range of 400nm to 750nmThe average transmittance of (a) is greater than 80%, and specifically may be, but is not limited to, 81%, 85%, 90%, 92%, 95%, 96%, 98%, 99%, etc. The first glass layer 10 may be, but is not limited to being, at least one of soda lime glass, alkali-containing aluminosilicate glass, alkali-containing borosilicate glass. In a specific embodiment, the first glass layer 10 may include, but is not limited to, components including the following parts by weight: siO (SiO) ₂ :55 parts to 70 parts; al (Al) ₂ O ₃ :5 parts to 13 parts; na (Na) ₂ O:0.5 to 5 parts; p (P) ₂ O ₅ :0.5 to 7 parts; li (Li) ₂ O:0.5 to 8 parts; mgO:0.5 to 3 parts; zrO (ZrO) ₂ :0.5 to 4 parts.

In the embodiments of the present application, when reference is made to the numerical ranges "a" to "b", unless otherwise indicated, all the terms including the endpoint a and including the endpoint b are used.

Referring to fig. 7 and 8, optionally, the first glass layer 10 includes a first body layer 10a and a first strengthening layer 10b that are stacked, the first body layer 10a is disposed on the surface of the second glass layer 30, the first strengthening layer 10b is disposed on the surface of the first body layer 10a away from the second glass layer 30, and the mechanical strength of the first strengthening layer 10b is greater than that of the first body layer 10 a. The first reinforcing layer 10b has a mechanical strength greater than that of the first body layer 10a, which allows the first glass layer 10 to have a better mechanical strength, thereby improving the mechanical strength of the case 100. Specifically, the first glass layer 10 is chemically strengthened such that the surface of the first glass layer 10 remote from the second glass layer 30 forms the first strengthening layer 10b, thereby providing the first glass layer 10 with better mechanical strength, and thus improving the mechanical strength of the case 100.

Alternatively, along the lamination direction of the first body layer 10a and the first reinforcing layer 10b (in other words, along the lamination direction of the first glass layer 10, the second glass layer 30, and the third glass layer 50, in other words, along the thickness direction of the case 100), the thickness h1 of the first reinforcing layer 10b satisfies the relationship: h1 is more than or equal to 40 mu m and less than or equal to 120 mu m; specifically, h1 may be, but is not limited to, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, 100 μm, 110 μm, 120 μm, etc. When the thickness of the first strengthening layer 10b is less than 40 μm, the improvement of the mechanical strength of the first glass layer 10 is limited, and the central tensile stress and the compressive stress are too small, and the mechanical strength is too low. In order to make the electronic device thinner and thinner when the case 100 is applied to the electronic device, the first glass layer 10 needs to be controlled within a certain thickness range, and when the thickness of the first reinforcement layer 10b is greater than 120 μm, the thickness of the first body layer 10a is too small, and both the central tensile stress and compressive stress of the first glass layer 10 are reduced, and the mechanical strength is also reduced.

Optionally, the compressive stress CS1 (i.e., the surface compressive stress, compressed Stress) of the first glass layer 10 satisfies the relationship: CS1 is more than 450MPa and less than 950MPa; specifically, but not limited to 451Mpa, 500Mpa, 600Mpa, 700Mpa, 800Mpa, 900Mpa, 949Mpa, etc. CS1 is too small, the mechanical strength of the first glass layer 10 is too low, CS1 is too large, so that the risk of spontaneous explosion of the first glass layer 10 is easy to occur, and the yield of the shell 100 is reduced.

Optionally, the central Tension CT1 (central tensile stress) of the first glass layer 10 satisfies the relationship: CT1 is more than 20MPa and less than 70MPa; specifically, it may be, but is not limited to, 21Mpa, 25Mpa, 30Mpa, 50Mpa, 40Mpa, 50Mpa, 60Mpa, 69.9Mpa, etc. When the central tension CT1 of the first glass layer 10 is too small (e.g., less than or equal to 20 Mpa), the strength of the first glass layer 10 is low, and the central tension CT1 of the first glass layer 10 is not too large, and when the central tension CT1 of the first glass layer 10 is too large (e.g., greater than 70 Mpa), the first glass layer is at risk of self-explosion.

Referring again to fig. 2, in some embodiments, the first sub-side portion 13 is disposed around the outer periphery of the first sub-body portion 11.

Alternatively, the thickness d1 of the first sub-body 11 satisfies the relationship: d1 is more than or equal to 0.1mm and less than or equal to 0.4mm; specifically, d1 may be, but is not limited to, 0.1mm, 0.15mm, 0.2mm, 0.25mm, 0.3mm, 0.35mm, 0.4mm, etc.

Alternatively, the thickness D1 of the first sub-side portion 13 satisfies the relationship in the lamination direction of the first glass layer 10, the second glass layer 30, and the third glass layer 50: d1 is more than or equal to 0.15mm and less than or equal to 1.5mm; specifically, D1 may be, but is not limited to, 0.15mm, 0.3mm, 0.5mm, 0.8mm, 1.0mm, 1.5mm, etc.

In some embodiments, when the side portions 40 are of unequal thickness, the thickness of the first sub-side portion 13 may gradually transition over any interval between 0.15mm and 1.5 mm. For example, the thickness of the first sub-body portion 13 gradually increases from 0.15mm to 1.0mm from the end connecting the first sub-body portion 11 to the end distant from the first sub-body portion 11. The thickness of the first sub-body 11 and the first sub-side 13 is too thin and the thickness of the first reinforcing layer 10b is also reduced, thereby reducing the mechanical strength of the first glass layer 10 and thus the mechanical strength of the case 100. The thickness of the main body of the case 100 is generally about 0.5mm to 0.7mm, and when the thickness of the first glass layer 10 is too thick, the thickness of the second glass layer 30 and the third glass layer 50 becomes thin, so that the glass laminate structure in the case 100 is asymmetric.

Optionally, the second glass layer 30 is a colored glass layer. The second glass layer 30 has an average transmittance of 40% to 80% for light having a wavelength ranging from 400nm to 800nm, and specifically may be, but not limited to, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 80%, etc. The second glass layer 30 may be, but is not limited to being, at least one of soda lime glass, alkali-containing aluminosilicate glass, alkali-containing borosilicate glass. In a specific embodiment, the second glass layer 30 may include, but is not limited to, components including the following parts by weight: siO (SiO) ₂ :50 to 70 parts; al (Al) ₂ O ₃ :10 parts to 20 parts; na (Na) ₂ O:0.5 to 12 parts; k (K) ₂ O:0.5 to 8 parts; mgO:3 parts to 7 parts; zrO (ZrO) ₂ :0.5 to 5 parts; coloring agent: 1 to 10 parts. Optionally, the colorant comprises MnO ₂ 、CoO、Co ₂ O ₃ 、FeO、Fe ₂ O ₃ 、CdS、CuO、CuO ₂ 、AuCl ₃ 、K ₂ Cr ₂ O ₇ 、Ag ₂ At least one of O. In some embodiments, the second glass layer 30 includes at least one colored glass layer disposed one upon the other. In other embodimentsThe second glass layer 30 includes a colored glass layer and a colorless glass layer alternately laminated in this order.

Alternatively, the second sub-side portion 33 is disposed around the outer periphery of the second sub-body portion 31, the second sub-body portion 31 is disposed on the surface of the first sub-body portion 11, and the second sub-side portion 33 is disposed on the surface of the first sub-side portion 13.

Alternatively, the thickness d2 of the second sub-body 31 satisfies the relationship: d2 is more than or equal to 0.2mm and less than or equal to 0.5mm; specifically, d2 may be, but is not limited to, 0.2mm, 0.25mm, 0.3mm, 0.35mm, 0.4mm, 0.45mm, 0.5mm, etc.

Alternatively, the thickness D2 of the second sub-side portion 33 satisfies the relation in the lamination direction of the first glass layer 10, the second glass layer 30, and the third glass layer 50: d2 is more than or equal to 0.2mm and less than or equal to 0.5mm; specifically, D2 may be, but is not limited to, 0.2mm, 0.25mm, 0.3mm, 0.35mm, 0.4mm, 0.45mm, 0.5mm, etc.

In some embodiments, when the side portions 40 are of unequal thickness, the thickness of the second sub-side portions 33 may gradually transition over any interval between 0.2mm and 0.5 mm. For example, the thickness of the second sub-body portion 33 gradually increases from 0.2mm to 0.3mm from the end connecting the second sub-body portion 31 to the end distant from the second sub-body portion 31. The color effect of the colored glass is related to the thickness of the colored glass, and when the thickness of the second sub-main body portion 31 and the second sub-side portion 33 is too thin, the color of the second glass layer 30 becomes light, so that the color effect of the second glass layer 30 is weakened, and when the thickness of the second sub-main body portion 31 and the second sub-side portion 33 is too thick, the thickness of the first glass layer 10 and the third glass layer 50 is extruded, and the mechanical strength of the whole manufactured housing 100 is affected.

Optionally, the third glass layer 50 is transparent. The colorless glass has mechanical properties stronger than that of the colored glass, and the colorless glass is used as the first glass layer, so that the shell 100 has better mechanical strength, drop resistance, impact resistance, bending resistance and the like.

The third glass layer 50 is chemically strongThe glass layers are formed such that the first glass layer 10 has better mechanical strength, drop resistance, impact resistance, bending resistance, etc., and thus the housing 100 has better mechanical strength, drop resistance, impact resistance, bending resistance, etc. For example, the third glass layer 50 is a glass layer reinforced with a melt of at least one of potassium nitrate and sodium nitrate. Alternatively, the third glass layer 50 has an average transmittance of more than 80% for light in the wavelength range of 400nm to 750nm, and in particular, may be, but not limited to, 81%, 85%, 90%, 92%, 95%, 96%, 98%, 99%, etc. The third glass layer 50 may be, but is not limited to being, at least one of soda lime glass, alkali-containing aluminosilicate glass, alkali-containing borosilicate glass. In a specific embodiment, the third glass layer 50 may include, but is not limited to, components including the following parts by weight: siO (SiO) ₂ :55 parts to 70 parts; al (Al) ₂ O ₃ :5 parts to 13 parts; na (Na) ₂ O:0.5 to 5 parts; p (P) ₂ O ₅ :0.5 to 7 parts; li (Li) ₂ O:0.5 to 8 parts; mgO:0.5 to 3 parts; zrO (ZrO) ₂ :0.5 to 4 parts.

Referring to fig. 9 and 10, optionally, the third glass layer 50 includes a second body layer 50a and a second strengthening layer 50b that are stacked, the second body layer 50a is disposed on a surface of the second glass layer 30 away from the first glass layer 10, the second strengthening layer 50b is disposed on a surface of the second body layer 50a away from the second glass layer 30, and the mechanical strength of the second strengthening layer 50b is greater than that of the second body layer 50 a. The second reinforcing layer 50b has a mechanical strength greater than that of the second body layer 50a, which allows the third glass layer 50 to have a better mechanical strength, thereby improving the mechanical strength of the case 100. Specifically, the third glass layer 50 is chemically strengthened such that the surface of the third glass layer 50 remote from the second glass layer 30 forms the second strengthening layer 50b, thereby providing the third glass layer 50 with better mechanical strength, and thus improving the mechanical strength of the case 100.

Alternatively, along the lamination direction of the second body layer 50a and the second reinforcing layer 50b (in other words, along the lamination direction of the first glass layer 10, the second glass layer 30, and the third glass layer 50, in other words, along the thickness direction of the case 100), the thickness h2 of the second reinforcing layer 50b satisfies the relationship: h2 is more than or equal to 40 mu m and less than or equal to 120 mu m; specifically, h2 may be, but is not limited to, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, 100 μm, 110 μm, 120 μm, etc. When the thickness of the second strengthening layer 50b is less than 40 μm, the improvement of the mechanical strength of the third glass layer 50 is limited, and the central tensile stress and the compressive stress are too small, and the mechanical strength is too low. In order to make the electronic device thinner when the case 100 is applied to the electronic device, the first glass layer 10 needs to be controlled within a certain thickness range, and when the thickness of the second reinforcing layer 50b is greater than 120 μm, the thickness of the second body layer 50a is too small, and the central tensile stress and compressive stress of the third glass layer 50 are both reduced, and the mechanical strength is also reduced.

Optionally, the compressive stress CS2 (i.e., the surface compressive stress, compressed Stress) of the third glass layer 50 satisfies the relationship: CS2 is more than 450MPa and less than 950MPa; specifically, but not limited to 451Mpa, 500Mpa, 600Mpa, 700Mpa, 800Mpa, 900Mpa, 949Mpa, etc. CS2 is too small, the mechanical strength of the first glass layer 10 is too low, and CS2 is too large, which easily makes the third glass layer 50 at risk of self-explosion, and reduces the yield of the manufacturing of the housing 100.

Optionally, the central Tension CT2 (central tensile stress) of the third glass layer 50 satisfies the relationship: CT2 is more than 20Mpa and less than 70Mpa; specifically, it may be, but is not limited to, 22Mpa, 25Mpa, 30Mpa, 50Mpa, 40Mpa, 50Mpa, 60Mpa, 69.9Mpa, etc. When the central tension CT2 of the third glass layer 50 is too small (e.g., less than or equal to 20 Mpa), the strength of the third glass layer 50 is low, and the central tension CT1 of the third glass layer 50 is not too large, and when the central tension CT1 of the third glass layer 50 is too large (e.g., greater than 70 Mpa), the third glass layer 50 is at risk of self-explosion.

In some embodiments, the third sub-side portion 53 is disposed around the outer periphery of the third sub-body portion 51. The third sub-body 51 is disposed on a surface of the second sub-body 31 away from the first sub-body 11, and the third sub-side 53 is disposed on a surface of the second sub-side 33 away from the first sub-side 13.

Alternatively, the thickness d3 of the third sub-body portion 51 satisfies the relationship: d3 is more than or equal to 0.1mm and less than or equal to 0.4mm; specifically, d3 may be, but is not limited to, 0.1mm, 0.15mm, 0.2mm, 0.25mm, 0.3mm, 0.35mm, 0.4mm, etc.

Alternatively, the thickness D3 of the third sub-side portion 53 in the lamination direction of the first glass layer 10, the second glass layer 30, and the third glass layer 50 satisfies the relationship: d3 is more than or equal to 0.15mm and less than or equal to 1.5mm; specifically, D3 may be, but is not limited to, 0.15mm, 0.3mm, 0.5mm, 0.8mm, 1.0mm, 1.5mm, etc.

In some embodiments, when the side portions 40 are of unequal thickness, the thickness of the third sub-side portion 53 may gradually transition over any interval between 0.15mm and 1.5 mm. For example, the thickness of the third sub-body portion 53 gradually increases from 0.15mm to 1.0mm from the end connecting the third sub-body portion 51 to the end distant from the third sub-body portion 51. The thickness of the second reinforcing layer 50b is also reduced when the thicknesses of the third sub-main body 51 and the third sub-side 53 are too thin, thereby reducing the mechanical strength of the first glass layer 10 and thus the mechanical strength of the case 100. The thickness of the main body of the case 100 is generally about 0.5mm to 0.7mm, and when the thickness of the third glass layer 50 is too thick, the thickness of the first glass layer 10 and the second glass layer 30 becomes thin, so that the glass laminate structure in the case 100 is asymmetric.

Referring to fig. 11, in some embodiments, the housing 100 of the present application further includes a bottom cover layer 70, and the bottom cover layer 70 is disposed on a surface of the first glass layer 10 away from the third glass layer 50 or on a surface of the third glass layer 50 away from the first glass layer 10. In other words, the bottom cover 70 is disposed on the surfaces of the main body 20 and the side 40 facing the accommodating space 101.

Alternatively, the cover substrate 70 may be, but is not limited to, a light blocking ink that absorbs or reflects light. Alternatively, the cover substrate 70 may be black, white, or gray. The bottom cover 70 is used for preventing the housing 100 from exposing components inside the electronic device away from the accommodating space 101 when the housing 100 is applied to the electronic device. Alternatively, the thickness of the cover base layer 70 is 5 μm to 50 μm, and in particular, the thickness of the cover base layer 70 may be, but is not limited to, 5 μm, 8 μm, 10 μm, 12 μm, 15 μm, 18 μm, 20 μm, 22 μm, 25 μm, 30 μm, 35 μm, 40 μm, 45 μm, 50 μm, etc. Alternatively, the cover substrate 70 may be one layer or may be a plurality of layers, such as 2 layers, 3 layers, 4 layers, or 5 layers. When the cover base layer 70 is a plurality of layers, it has a better shielding effect than one layer. Alternatively, the thickness of each cover substrate 70 is 8 μm to 12 μm, and in particular, may be, but not limited to, 8 μm, 9 μm, 10 μm, 11 μm, 12 μm, etc. Each cover substrate 70 may be formed by the steps of: the shading ink is coated on the surfaces of the main body part 20 and the side part 40 far away from the accommodating space 101, and baked at 70 ℃ to 80 ℃ for 30min to 60min to form the cover bottom layer 70.

Referring to fig. 12, an embodiment of the present application provides a housing 100, which includes a first glass layer 10, a second glass layer 30 and a third glass layer 50 stacked in sequence. The first glass layer 10, the second glass layer 30 and the third glass layer 50 are integrally formed, and the thermal expansion coefficient of the second glass layer 30 is greater than that of the first glass layer 10 and greater than that of the third glass layer 50.

The shell 100 according to the embodiment of the application includes the first glass layer 10, the second glass layer 30 and the third glass layer 50 which are sequentially stacked, wherein the second glass layer 30 has at least one color, so that the produced shell 100 has a color, the shell 100 can have various colors by changing the color of the second glass layer 30, meanwhile, the thermal expansion coefficient of the second glass layer 30 is larger than the thermal expansion coefficient of the first glass layer 10 and larger than the thermal expansion coefficient of the third glass layer 50, the first glass layer 10, the second glass layer 30 and the third glass layer 50 are in an integrated structure, the volume shrinkage of the second glass layer 30 is larger than the volume shrinkage of the first glass layer 10 in the process of cooling the shell 100 from high temperature to room temperature, the second glass layer 30 generates inward tensile stress on the first glass layer 10, the first glass layer 10 generates outward resistance to the second glass layer 30, so that a compressive stress layer is generated between the first glass layer 10 and the second glass layer 30, and the second glass layer 30 generates an integral structure, and the mechanical strength between the first glass layer 30 and the third glass layer 50 is also increased, and the mechanical strength between the first glass layer and the third glass layer 50 is increased.

Referring to fig. 2 again, in some embodiments, the first glass layer 10 includes a first sub-main body 11 and a first sub-side 13 connected by bending; the second glass layer 30 has at least one color and includes a second sub-main body 31 and a second sub-side 33 connected by bending; the third glass layer 50 includes a third sub-main body 51 and a third sub-side 53 which are connected by bending; the first sub-body 11, the second sub-body 31 and the third sub-body 51 are sequentially stacked to form a body 20, the first sub-side 13, the second sub-side 33 and the third sub-side 53 are sequentially stacked to form a side 40, the side 40 is bent and connected with the body 20, and the side 40 is disposed around the outer periphery of the body 20.

For the first glass layer 10, the second glass layer 30, and the third glass layer 50, the first sub-main body 11, the first sub-side 13, the second sub-main body 31, the second sub-side 33, the third sub-main body 51, the third sub-side 53, the main body 20, and the side 40 are described in detail in the corresponding parts of the above embodiments, and will not be repeated here.

Referring to fig. 7 again, in some embodiments, the first glass layer 10 includes a first body layer 10a and a first strengthening layer 10b that are stacked, the first body layer 10a is disposed on the surface of the second glass layer 30, the first strengthening layer 10b is disposed on the surface of the first body layer 10a away from the second glass layer 30, and the mechanical strength of the first strengthening layer 10b is greater than the mechanical strength of the first body layer 10 a. The first reinforcing layer 10b has a mechanical strength greater than that of the first body layer 10a, which allows the first glass layer 10 to have a better mechanical strength, thereby improving the mechanical strength of the case 100. Specifically, the first glass layer 10 is chemically strengthened such that the surface of the first glass layer 10 remote from the second glass layer 30 forms the first strengthening layer 10b, thereby providing the first glass layer 10 with better mechanical strength, and thus improving the mechanical strength of the case 100.

For detailed descriptions of the first body layer 10a and the first reinforcing layer 10b, please refer to the corresponding parts of the above embodiments, and the detailed descriptions are omitted herein.

Referring to fig. 9 again, in some embodiments, the third glass layer 50 includes a second body layer 50a and a second strengthening layer 50b that are stacked, the second body layer 50a is disposed on a surface of the second glass layer 30 away from the first glass layer 10, the second strengthening layer 50b is disposed on a surface of the second body layer 50a away from the second glass layer 30, and the mechanical strength of the second strengthening layer 50b is greater than the mechanical strength of the second body layer 50 a. The second reinforcing layer 50b has a mechanical strength greater than that of the second body layer 50a, which allows the third glass layer 50 to have a better mechanical strength, thereby improving the mechanical strength of the case 100. Specifically, the third glass layer 50 is chemically strengthened such that the surface of the third glass layer 50 remote from the second glass layer 30 forms the second strengthening layer 50b, thereby providing the third glass layer 50 with better mechanical strength, and thus improving the mechanical strength of the case 100.

For detailed descriptions of the second body layer 50a and the second strengthening layer 50b, please refer to the corresponding parts of the above embodiments, and the detailed descriptions are omitted herein.

The case 100 of the above embodiments of the present application may be prepared by the preparation method of the case 100 of the following embodiments of the present application.

Referring to fig. 13, an embodiment of the present application further provides a method for preparing a housing 100, which includes:

s201, providing a first glass substrate, a second glass substrate and a third glass substrate, wherein the second glass substrate has at least one color; and

optionally, a first glass substrateIs transparent, and the average transmittance of the first glass substrate at light rays in the wavelength range of 400nm to 750nm is more than 80%, and specifically may be, but is not limited to, 81%, 85%, 90%, 92%, 95%, 96%, 98%, 99%, etc. The first glass substrate may be, but is not limited to being, at least one of soda lime glass, alkali metal containing aluminosilicate glass, alkali metal containing borosilicate glass. In a specific embodiment, the first glass substrate includes, but is not limited to, components including, by weight: siO (SiO) ₂ :55 parts to 70 parts; al (Al) ₂ O ₃ :5 parts to 13 parts; na (Na) ₂ O:0.5 to 5 parts; p (P) ₂ O ₅ :0.5 to 7 parts; li (Li) ₂ O:0.5 to 8 parts; mgO:0.5 to 3 parts; zrO (ZrO) ₂ :0.5 to 4 parts.

Optionally, the second glass substrate is a colored glass substrate. The second glass substrate has an average transmittance of 40% to 80% for light in the wavelength range of 400nm to 800nm, and specifically may be, but not limited to, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 80%, etc. The second glass substrate may be, but is not limited to being, at least one of soda lime glass, alkali-containing aluminosilicate glass, alkali-containing borosilicate glass. In a specific embodiment, the second glass substrate includes, but is not limited to, components including, by weight: siO (SiO) ₂ :50 to 70 parts; al (Al) ₂ O ₃ :10 parts to 20 parts; na (Na) ₂ O:0.5 to 12 parts; k (K) ₂ O:0.5 to 8 parts; mgO:3 parts to 7 parts; zrO (ZrO) ₂ :0.5 to 5 parts; coloring agent: 1 to 10 parts. Optionally, the colorant comprises MnO ₂ 、CoO、Co ₂ O ₃ 、FeO、Fe ₂ O ₃ 、CdS、CuO、CuO ₂ 、AuCl ₃ 、K ₂ Cr ₂ O ₇ 、Ag ₂ At least one of O.

Optionally, the third glass substrate is transparent, and the third glass substrate has an average transmittance of greater than 80% for light in the wavelength range of 400nm to 750nm, and specifically may be, but is not limited to, 81%, 85%, 90%, 92%, 95%, 96%, 98%, 99%, etc. The third glass substrate may be, but is not limited to, soda lime glass, alkali metal containing aluminum At least one of silicate glass and borosilicate glass containing alkali metal. In a specific embodiment, the third glass substrate includes, but is not limited to, components including, by weight: siO (SiO) ₂ :55 parts to 70 parts; al (Al) ₂ O ₃ :5 parts to 13 parts; na (Na) ₂ O:0.5 to 5 parts; p (P) ₂ O ₅ :0.5 to 7 parts; li (Li) ₂ O:0.5 to 8 parts; mgO:0.5 to 3 parts; zrO (ZrO) ₂ :0.5 to 4 parts.

S202, sequentially overlapping the first glass substrate, the second glass substrate and the third glass substrate, and performing die casting molding to form a first glass layer 10 by the first glass substrate, a second glass layer 30 by the second glass substrate, and a third glass layer 50 by the third glass substrate, so as to obtain the shell 100, wherein the first glass layer 10 comprises a first sub-main body part 11 and a first sub-side part 13 which are connected in a bending way; the second glass layer 30 has at least one color and includes a second sub-main body 31 and a second sub-side 33 connected by bending; the third glass layer 50 includes a third sub-main body 51 and a third sub-side 53 which are connected by bending; the first sub-main body 11, the second sub-main body 31, and the third sub-main body 51 are sequentially stacked to form a main body 20, the first sub-side 13, the second sub-side 33, and the third sub-side 53 are sequentially stacked to form a side 40, the side 40 is bent and connected to the main body 20, and the side 40 is disposed around the outer periphery of the main body 20; at least a portion of the side portion 40 has a thickness greater than that of the main body portion 20 in the lamination direction of the first glass layer 10, the second glass layer 30, and the third glass layer 50.

Alternatively, the first glass layer 10 may face the accommodating space 101, the third glass layer 50 faces away from the accommodating space 101, or the first glass layer 10 may face away from the accommodating space 101, and the third glass layer 50 faces the accommodating space 101.

For detailed description of the housing 100, please refer to the description of the corresponding parts of the above embodiments, and the detailed description is omitted herein.

The detailed description of the same features of the present embodiment as those of the above embodiment is referred to the above embodiment, and will not be repeated here.

The housing 100 manufactured by the manufacturing method of the housing 100 of the present embodiment includes a main body portion 20 and a side portion 40 which are connected by bending; the side portion 40 is disposed around the outer periphery of the main body portion 20; at least a portion of the side portion 40 has a thickness greater than that of the main portion 20, so that the housing 100 of the present application has a stereoscopic effect and a better stereoscopic effect. In addition, when the housing 100 falls or is impacted, the main body 20 is stressed in the front direction, while the side 40 is stressed in the point, and when the impact forces are the same, the pressure applied to the side 40 during the impact is far greater than the pressure applied to the main body 20 during the impact, so that the thickness of the side 40 is greater than the thickness of the main body 20, and the overall impact resistance and anti-falling performance of the housing 100 can be improved. Furthermore, the second glass layer 30 has at least one color, thereby making the manufactured case 100 have a color, and the color of the case 100 can be designed by changing the color of the second glass layer 30. Furthermore, the body of the housing 100 includes the first glass layer 10, the second glass layer 30 and the third glass layer 50 that are sequentially stacked, and the first glass layer 10, the second glass layer 30 and the third glass layer 50 form the main body portion 20 and the side portion 40, so that the manufactured housing 100 has a color, and the transition at the connection between the main body portion 20 and the side portion 40 is uniform, no black line is formed, no color step is formed, and a better visual effect is achieved. Furthermore, after the shell 100 is molded, only the contour of the shell 100 is required to be machined, and the surface of the whole shell 100 is not required to be machined, so that the generation of surface microcracks can be avoided, and the reduction of mechanical strength caused by machining is avoided.

Referring to fig. 14, an embodiment of the present application further provides a method for preparing a housing 100, which includes:

s301, providing a first glass substrate 1', a second glass substrate 2' and a third glass substrate 3', wherein the second glass substrate 2' has at least one color;

for detailed descriptions of the first glass substrate 1', the second glass substrate 2' and the third glass substrate 3', please refer to the corresponding parts of the above embodiments, and the detailed descriptions are omitted herein.

S302, sequentially superposing the first glass substrate 1', the second glass substrate 2' and the third glass substrate 3' in a die-casting mold;

referring to fig. 15, optionally, the die casting mold 100' includes a first sub-mold 10' and a second sub-mold 30', wherein the first sub-mold 10' is a female mold, and the second sub-mold 30' is a male mold. The first sub-die 10 'has a recess 11' and the second sub-die 30 'has a protrusion 31', the protrusion 31 'cooperating with the recess 11' for die casting. The recess 11' includes a bottom surface 111' and a side surface 113' which are connected by bending, the side surface 113' is disposed around the outer periphery of the bottom surface 111', and the bottom surface 111' is used for disposing the first glass substrate 1', the second glass substrate 2', and the third glass substrate 3'.

Specifically, the sequentially laminating the first glass substrate 1', the second glass substrate 2', and the third glass substrate 3 'in the die casting mold 100' includes:

sequentially superposing the first glass substrate 1', the second glass substrate 2', and the third glass substrate 3 'on the bottom surface 111'; and closing the second sub-die 30' so that at least part of the projection 31' is located in the recess 11 '.

Optionally, the second sub-mold 30' and the first sub-mold 10' are graphite molds, and the average thermal expansion coefficients of the first glass substrate 1', the second glass substrate 2' and the third glass substrate 3' are larger than the average thermal expansion coefficients of the graphite molds. The first glass substrate 1', the second glass substrate 2', and the third glass substrate 3 'that are stacked together include an end face 101', and a distance Δl between the end face 101 'and the side surface 113' satisfies a relationship: delta L is more than or equal to 0.1mm and less than or equal to 4mm; specifically, it may be, but is not limited to, 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.8mm, 1.0mm, 1.5mm, 2mm, 2.5mm, 3.0mm, 3.5mm, 4mm, etc. When the preset distance DeltaL is too small, the glass melt expands beyond DeltaL during die casting, and the glass melt easily overflows out of the die casting mold 100', so that the thickness of the formed shell 100 is uneven; when the preset distance Δl is too large, the movement amount of the glass melt in the grinding tool is large during the die casting molding, so that more glass melt on one side of the die casting mold 100' and less glass melt on the other side are easily caused, and the thickness of the manufactured shell 100 is uneven. Since the thermal expansion coefficient of the glass is larger than that of the graphite mold, the first glass substrate 1', the second glass substrate 2', and the third glass substrate 3' which are stacked together have a predetermined distance from the side surface 113' of the recess 11', so that when the die casting is performed, the glass melt is extruded out of the gap between the second sub-mold 30' and the first sub-mold 10', and the thickness of the manufactured housing 100 is not uniform.

Alternatively, Δl may be calculated by the following formula: Δl= Δt× (α1×l1- α2×l2), where Δt is the temperature difference between the temperature at the time of die casting and room temperature, α1 is the average thermal expansion coefficient of the first glass substrate 1', the second glass substrate 2', and the third glass substrate 3', L1 is the length of the first glass substrate 1', the second glass substrate 2', and the third glass substrate 3' in the preset direction, the preset direction is parallel to the extending direction of the first glass substrate 1', α2 is the thermal expansion coefficient of the mold, and L2 is the length of the recess 11' of the mold in the preset direction.

In one embodiment, α1=78.8x10 ^-7 /℃，α2＝50×10 ^-7 L1=160 mm, l2=160 mm, Δt=973 ℃, Δl=973 ℃ x 160mm (78.8 x 10 ^-7 /℃-50×10 ^-7 /℃)＝0.448mm。

S303, gradually heating to a first temperature t1 to preheat;

optionally, the die casting mold 100' provided with the first glass substrate 1', the second glass substrate 2' and the third glass substrate 3' which are arranged in a superposed manner is placed in a continuous forming furnace, and the temperature of the die casting mold 100' is raised to the first temperature t1 for preheating through 1 to 6 preheating process stations. The first glass substrate 1', the second glass substrate 2' and the third glass substrate 3 'are gradually heated, so that the first glass substrate 1', the second glass substrate 2 'and the third glass substrate 3' have sufficient time to be heated, the temperatures of the positions of the first glass substrate 1', the second glass substrate 2' and the third glass substrate 3 'are as consistent as possible, and the temperature of the positions is not consistent when die casting is performed, so that the manufactured shell 100 is defective or the die casting mold 100' is damaged.

Specifically, the temperature rise and the preheating can be performed by 1, 2, 3, 4, 5, 6 and the like process stations, and the temperature of each preheating process station gradually increases. Specifically, when there are at least two process stations, the temperature of the first process station is 280 ℃ to 320 ℃ (e.g., may be 280 ℃, 300 ℃, 320 ℃, etc.), and the temperature of the last process station is 650 ℃ to 750 ℃ (e.g., may be 650 ℃, 680 ℃, 700 ℃, 750 ℃, etc.). In a specific embodiment, when the number of temperature raising process stations is 4, the temperature of the first temperature raising process station is 300 ℃, the temperature of the second temperature raising process station is 450 ℃, the temperature of the third temperature raising process station is 600 ℃, and the temperature of the fourth temperature raising process station is 750 ℃.

Alternatively, the first temperature t1 satisfies the relation: t1 is less than 850 ℃ and is more than or equal to 650 ℃; specifically, the first temperature t1 may be, but is not limited to, 650 ℃, 670 ℃, 690 ℃, 700 ℃, 630 ℃, 750 ℃, 770 ℃, 790 ℃, 800 ℃, 830 ℃, 849 ℃, etc. When the first temperature is too low (for example, lower than 650 ℃), the softening temperature of the glass is not reached yet, the softening degree of the glass is insufficient, the viscosity of the glass is high, the fluidity is poor, and when the forming is carried out to cause the non-uniform thickness, the forming of the non-uniform thickness area is easy to be insufficient; when the first temperature is too high (for example, higher than 850 ℃), the viscosity of the glass is low, the fluidity is high, and the gas is possibly trapped by the flowing before the die casting molding is not performed, so that the prepared shell 100 has appearance defects such as bad bubbles.

Alternatively, the preheating time of each preheating process station is 0.5min to 15min, specifically, but not limited to, 0.5min, 1min, 3min, 5min, 8min, 10min, 12min, 13min, 15min, etc. When the number of process stations is large, the preheating time per process station may be short, and when the number of process stations is small, the preheating time per process station may be long. The glass has poor heat conductivity, enough time is needed for heating, the glass is heated insufficiently after each preheating process station is short, and the forming efficiency is reduced after the time is longer than 15 min.

S304, gradually heating to a second temperature t2, and performing die casting molding, wherein the second temperature t2 is respectively greater than softening points of the first glass substrate 1', the second glass substrate 2' and the third glass substrate 3', and t2 is more than t1; and

optionally, the temperature of the die casting mold 100 'provided with the first glass substrate 1', the second glass substrate 2', and the third glass substrate 3' which are arranged in a superimposed manner is raised to a temperature higher than the softening point (i.e., the second temperature t 2) of each of the first glass substrate 1', the second glass substrate 2', and the third glass substrate 3 'by 1 to 3 melting process stations (specifically, 1, 2, or 3), so that the first glass substrate 1', the second glass substrate 2', and the third glass substrate 3' are softened to form a melt, and die casting molding is performed in a molding area. Alternatively, the heating time of each melting process station is 0.5min to 15min, specifically, but not limited to, 0.5min, 1min, 3min, 5min, 8min, 10min, 12min, 13min, 15min, etc. Before the die casting, the first glass substrate 1', the second glass substrate 2' and the third glass substrate 3' need to be heated to a softening point or higher than that of the first glass substrate 1', so that the first glass substrate 1', the second glass substrate 2' and the third glass substrate 3' flow under the action of extrusion force when the die casting is performed. The thermal conductivity of the glass is poor, enough time is needed for heating, the glass is heated insufficiently and melted incompletely in a short time at each melting process station, the die casting molding is not facilitated, and the molding efficiency is reduced in a time exceeding 15 min.

Optionally, the second temperature t2 satisfies a relation of 850 ℃ to t2 to 1200 ℃; specifically, it may be, but is not limited to, 850 ℃, 900 ℃, 950 ℃, 1000 ℃, 1050 ℃, 1100 ℃, 1150 ℃, 1200 ℃ and the like. When the glass is required to be formed in different thickness, the glass is required to have enough fluidity to enable the formation of the different thickness areas to be completed, and when the second temperature is lower than 850 ℃, the viscosity of the glass is too high, so that the glass in the different thickness areas is not easy to extrude to the different thickness areas, and the formation of the shell 100 is not easy to realize. When the second temperature is higher than 1200 ℃, although the viscosity of the glass is reduced and the fluidity becomes good, the stability of the molding equipment is not facilitated and the aging of the equipment is accelerated by the high temperature.

Optionally, the die casting is performed in a vacuum state, and the air pressure P (namely the air pressure of a forming area) in the die casting meets the relation that P is more than or equal to 10Pa and less than or equal to 100Pa; specifically, it may be, but is not limited to, 10Pa, 30Pa, 50Pa, 70Pa, 90Pa, 100Pa, etc. When the glass substrate is extruded to flow the glass melt, the residual gas in the die casting mold 100' can be removed as much as possible, the gas wrapped in the glass melt can be better reduced or avoided, the smaller the air pressure is, the more favorable the elimination of bubbles in the glass melt is, the more favorable the reduction of bubbles in the prepared shell 100 is, and the mechanical strength of the shell 100 is improved. When the air pressure of the die casting is too high (for example, more than 100 Pa), air bubbles are easily wrapped in the glass melt body during the die casting, so that air bubbles are generated in the manufactured shell 100, the mechanical strength of the shell 100 is reduced, and when the air pressure of the die casting is too low (for example, less than 10 Pa), the requirement on vacuum equipment is high, and the manufacturing cost of the shell 100 is not reduced.

Optionally, the extrusion force F received by the die casting mold 100' satisfies the relation 0.2 MPa-F-0.9 MPa; specifically, it may be, but is not limited to, 0.2MPa, 0.3MPa, 0.4MPa, 0.5MPa, 0.6MPa, 0.7MPa, 0.8MPa, 0.9MPa, etc. When the extrusion force F is 0.2MPa to 0.9MPa, the glass melt can be fully extruded, and when the housing 100 with unequal thickness needs to be prepared, enough glass melt flows to the side (namely the unequal thickness area), extrusion transition can be well prevented, and the melt overflows the die-casting die 100'. When the pressing force is too small, the pressing force for the glass melt is insufficient, and when it is necessary to prepare the unequal thickness case 100, there is insufficient melt flow to the side portion, unequal thickness molding of the side portion is insufficient, and the yield of the case 100 is lowered. When the extrusion force is too large, the melt is excessively extruded, so that the melt is easy to overflow to the outer side of the die casting mold 100', and the yield of the shell 100 is reduced.

Optionally, the time of die casting is 0.5min to 15min; specifically, it may be, but is not limited to, 0.5min, 1min, 3min, 5min, 8min, 10min, 12min, 13min, 15min, etc. When the time of die casting is too short, when the shell 100 with different thickness needs to be prepared, the glass melt does not flow to the side part of the shell 100 sufficiently, the side part is not molded sufficiently, and the yield of the shell 100 is reduced; when the molding time is too long, the production efficiency of the case 100 is too low, wasting resources.

S305, gradually cooling to a third temperature t3 to anneal, wherein t3 is less than t2.

Optionally, the temperature of the die casting mold 100 'provided with the first glass substrate 1', the second glass substrate 2 'and the third glass substrate 3' which are arranged in a superposed manner is reduced to a third temperature t3 by 3 to 10 annealing process stations (in particular, 3, 5, 8 or 10 annealing process stations) so as to reduce the internal stress of the shell 100 after molding in a slow cooling manner. It will be appreciated that the third temperature t3 is the temperature of the last annealing process station, and the temperature of each annealing process station gradually decreases, for example, when the annealing process stations are 4, the temperature of the first annealing process station is 900 ℃, the temperature of the second annealing process station is 750 ℃, the temperature of the third annealing process station is 600 ℃, and the temperature of the fourth annealing process station is 500 ℃. Alternatively, the annealing time of each annealing process station is 0.5min to 15min, specifically, but not limited to, 0.5min, 1min, 3min, 5min, 8min, 10min, 12min, 13min, 15min, etc. The annealing time is too short, and internal stress in the manufactured shell 100 cannot be well eliminated, and the annealing time is too long, so that the forming efficiency of the shell 100 is reduced.

Optionally, the third temperature t3 satisfies the relation 450 ℃ to t3 to 550 ℃; specifically, it may be, but is not limited to, 450 ℃, 480 ℃, 500 ℃, 520 ℃, 550 ℃, etc. If the third temperature is too high, the temperature difference between the annealing process station and the cooling process station is too large, so that the produced shell 100 is easy to remain internal stress, and the internal stress of the produced shell is not reduced.

Referring to fig. 16, in some embodiments, the method for manufacturing the housing 100 according to the embodiment of the present application further includes:

s306, cooling to obtain the shell 100.

Optionally, the temperature of the die casting mold provided with the first glass substrate, the second glass substrate and the third glass substrate, which are disposed in a superimposed manner, is rapidly cooled to room temperature by 3 to 7 annealing process stations (in particular, 3, 4, 5 or 7 may be used) to obtain the housing 100.

Alternatively, the cooling time of each cooling process station is 0.5min to 15min, specifically, but not limited to, 0.5min, 1min, 3min, 5min, 8min, 10min, 12min, 13min, 15min, etc. The cooling time is too short, and the temperature of the housing 100 cannot be well reduced, and the cooling time is too long, so that the molding efficiency of the housing 100 is reduced.

In some embodiments, the method for manufacturing the housing 100 according to the embodiment of the present application further includes: the housing 100 is machined (computerized numerically controlled precision machining, CNC machining) and polished.

Specifically, the shell 100 is subjected to computer digital control precision machining to remove excess material at the edge of the shell 100, and the surface of the shell 100 is subjected to mechanical polishing and mechanochemical polishing, so that the surface roughness Ra of the shell 100 after polishing satisfies the relationship: ra is more than or equal to 0.1nm and less than or equal to 50 nm.

Referring to fig. 17, an embodiment of the present application further provides a method for preparing a housing 100, which includes:

s401, providing a first glass substrate, a second glass substrate and a third glass substrate, wherein the second glass substrate has at least one color;

s402, sequentially overlapping the first glass substrate, the second glass substrate and the third glass substrate in a die-casting die;

S403, gradually heating to a first temperature t1 to preheat;

s404, gradually heating to a second temperature t2, and performing die casting molding, wherein the second temperature t2 is respectively greater than softening points of the first glass substrate, the second glass substrate and the third glass substrate, and t2 is more than t1;

s405, gradually cooling to a third temperature t3 to anneal, wherein t3 is less than t2;

s406, cooling; and

s407, performing chemical strengthening.

Optionally, the chemically strengthening the housing 100 includes: a first reinforcement and a second reinforcement. The first strengthening comprises preheating the shell 100 at 370-390 ℃ for 60min, and chemically strengthening in sodium nitrate (NaNO 3) melt at 430-450 ℃ for 70-180 min; the second strengthening includes preheating the casing 100 at 370-390 ℃ for 60min, and performing chemical strengthening in a potassium nitrate (KNO 3) melt at 410-450 ℃ for 70-150 min, so that a first strengthening layer 10b is formed on the surface of the first glass layer 10, and a third strengthening layer is formed on the surface of the third glass layer 50, thereby improving various mechanical properties of the casing 100, such as strength and hardness. When the chemical strengthening is performed, the large radius ions in sodium nitrate and potassium nitrate are replaced with the small radius ions in the glass, so that the mechanical strength of the resulting housing 100 is increased, for example: the lithium ions in the glass are replaced with sodium ions in sodium nitrate, and the sodium ions in the glass are replaced with potassium ions in potassium nitrate.

Alternatively, the temperature of the first strengthening may be, but is not limited to, 430 ℃, 435 ℃, 440 ℃, 445 ℃, 450 ℃, and the like. The first strengthening time is 70min, 80min, 100min, 120min, 140min, 160min, 180min, etc. Alternatively, the temperature of the second strengthening may be, but is not limited to, 410 ℃, 420 ℃, 430 ℃, 435 ℃, 440 ℃, 445 ℃, 450 ℃, and the like. The second strengthening time is 70min, 80min, 100min, 120min, 140min, 150min, etc.

The housing 100 of the present application is further described below by way of specific examples.

Example 1

The case 100 of the present embodiment is prepared by the steps of:

1) Providing a first glass substrate, a second glass substrate and a third glass substrate, wherein the second glass substrate is colored glass; the first glass substrate and the second glass substrate are colorless glass;

2) The first glass substrate, the second glass substrate and the third glass substrate are sequentially overlapped and arranged in a die-casting die;

3) Heating the temperature to 750 ℃ by adopting 3 preheating process stations, wherein the temperature of the first preheating process station is 300 ℃, the temperature of the second process station is 500 ℃, and the temperature of the third process station is 750 ℃;

4) Heating the temperature to 1000 ℃ by adopting 2 melting process stations, wherein the temperature of the first melting process station is 850 ℃, and the temperature of the second melting process station is 1000 ℃;

5) Annealing is carried out by adopting three annealing process stations, wherein the temperature of the first annealing process station is 900 ℃, the temperature of the second annealing process station is 700 ℃, and the temperature of the third annealing process station is 500 ℃;

6) Three cooling process stations are used to cool to room temperature, wherein the temperature of the first cooling process station is 350 ℃, the temperature of the second cooling process station is 200 ℃, and the temperature of the third cooling process station is 20 ℃.

7) After reinforcing for 120min at 380 ℃ by using sodium nitrate melt and reinforcing for 120min at 430 ℃ by using potassium nitrate melt, a shell 100 is obtained, wherein the thickness of the first sub-main body part 11 and the thickness of the second sub-main body part 31 of the prepared shell 100 are 0.2mm, the thickness of the third sub-main body part 51 is 0.2mm, the thickness of the side part is gradually transited from 0.7mm to 2.3mm, the thickness of the first sub-side part 13 is gradually transited from 0.2mm to 0.9mm, the thickness of the second sub-side part 33 is gradually transited from 0.3mm to 0.5mm, and the thickness of the third sub-side part 53 is gradually transited from 0.2mm to 0.9mm.

Comparative example 1

The case 100 of this comparative example was prepared by the following steps:

1) Using planar colored glass, and machining (CNC machining) the colored glass to obtain a 3D shell 100 with unequal thickness; wherein the thickness of the main body portion of the housing 100 is 0.7mm, and the thickness of the side portion gradually transitions from 0.7mm to 2.3mm.

Comparative example 2

The case 100 of this comparative example was prepared by the following steps:

1) Providing colored glass and colorless tempered glass;

2) Welding colorless reinforced glass on the surface of colored glass, and surrounding the outer periphery of the colored glass;

3) Machining (CNC machining) to obtain a 3D shell 100 with different thicknesses; wherein the thickness of the main body portion of the housing 100 is 0.7mm, and the thickness of the side portion gradually transitions from 0.7mm to 2.3mm.

The shells 100 obtained in the above example 1, comparative example 1 and comparative example 2 were subjected to ball drop height test, and the test results are shown in table 1 below.

Ball drop height test method (impact test): the housing 100 is manufactured as a flat sheet with dimensions of 150mm x 73 mm; the samples of the above examples and comparative examples were respectively supported on jigs (jigs with heights of 3mm were supported on four sides of the casing 100, and the middle was suspended), and stainless steel balls with weights of 110g were used to freely fall from a certain height to the surface of the casing 100 to be measured, and the center points of the casings 100 were measured respectively, and the average value was taken 5 times in total, until the casings 100 were broken, and the height when the casings 100 were broken was the falling ball height. The higher the drop height, the higher the impact strength and toughness of the housing 100, and the less likely it is to fracture.

Table 1 performance parameters of each example and comparative example

Example	Example 1	Comparative example 1	Comparative example 2
				Ball drop height (cm)	140	90	80
Color effect	No colour level difference	No colour level difference	Colored segment difference

As is apparent from the test results of example 1, comparative example 1 and comparative example 2 of table 1, the impact strength of the colored shell 100 manufactured by the method of the example of the present application is far higher than that of the shell 100 manufactured by the CNC processing method and the welding method. The shells prepared in comparative examples 1 and 2 all require large-area CNC processing of the surface to obtain the required size, and the large-area CNC processing forms a large number of microcracks on the surface of the shell, and although some microcracks can be eliminated after polishing, more microcracks still exist, so that the mechanical strength of the shell is reduced. In addition, the expansion ratio between the casing colorless glass and the colored glass of comparative example 2 is generally different, cracks are easily generated at the welded part, the mechanical strength of the casing is reduced, and furthermore, the joint between the colored glass and the colorless glass has obvious color break and poor appearance effect.

Referring to fig. 18 to 20, an embodiment of the present application further provides an electronic device 500, which includes: display assembly 510, housing 100 according to an embodiment of the present application, and circuit board assembly 530. The display component 510 is used for displaying; the housing 100 is configured to carry the display assembly 510; the circuit board assembly 530 is disposed between the display assembly 510 and the housing 100, and is electrically connected to the display assembly 510, for controlling the display assembly 510 to display. In some embodiments, the housing 100 has a receiving space 101, the circuit board assembly 530 is located in the receiving space 101, and the display assembly 510 is further used to close the receiving space 101; in other words, the housing 100 and the display assembly 510 enclose a closed accommodating space 101.

The electronic device 500 of the embodiment of the present application may be, but is not limited to, a portable electronic device such as a mobile phone, a tablet computer, a notebook computer, a desktop computer, a smart band, a smart watch, an electronic reader, a game console, and the like.

Alternatively, the display component 510 may be, but is not limited to, one or more of a liquid crystal display component, a light emitting diode display component (LED display component), a micro light emitting diode display component (micro LED display component), a sub-millimeter light emitting diode display component (MiniLED display component), an organic light emitting diode display component (OLED display component), and the like.

Referring to fig. 20, optionally, the circuit board assembly 530 may include a processor 531 and a memory 533. The processor 531 is electrically connected to the display module 510 and the memory 533, respectively. The processor 531 is configured to control the display unit 510 to display, and the memory 533 is configured to store program codes required for the processor 531 to operate, program codes required for controlling the display unit 510, display contents of the display unit 510, and the like.

Alternatively, the processor 531 includes one or more general-purpose processors 531, wherein the general-purpose processor 531 may be any type of device capable of processing electronic instructions, including a central processing unit (Central Processing Unit, CPU), microprocessor, microcontroller, main processor, controller, ASIC, and the like. The processor 531 is operable to execute various types of digitally stored instructions, such as software or firmware programs stored in the memory 533, that enable the computing device to provide a wide variety of services.

Alternatively, the Memory 533 may include a Volatile Memory (Volatile Memory), such as a random access Memory (Random Access Memory, RAM); the Memory 533 may also include a Non-volatile Memory (Non-VolatileMemory, NVM), such as a Read-Only Memory (ROM), a Flash Memory (FM), a Hard Disk (HDD), or a Solid State Drive (SSD). The memory 533 may also include a combination of the above types of memory.

Reference in the specification to "an embodiment," "implementation" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the described embodiments of the application may be combined with other embodiments. Furthermore, it should be understood that the features, structures or characteristics described in the embodiments of the present application may be combined arbitrarily without any conflict with each other, to form yet another embodiment without departing from the spirit and scope of the present application.

Finally, it should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present application and not for limiting the same, and although the present application has been described in detail with reference to the above-mentioned preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present application without departing from the spirit and scope of the technical solution of the present application.

Claims

1. The shell is characterized by comprising a first glass layer, a second glass layer and a third glass layer which are sequentially laminated; the first glass layer comprises a first sub-main body part and a first sub-side part which are connected in a bending way; the second glass layer is a colored glass layer, has at least one color and comprises a second sub-main body part and a second sub-side part which are connected in a bending way; the third glass layer comprises a third sub-main body part and a third sub-side part which are connected in a bending way; the first sub-main body part, the second sub-main body part and the third sub-main body part are sequentially stacked to form a main body part, the first sub-side part, the second sub-side part and the third sub-side part are sequentially stacked to form a side part, the side part is connected with the main body part in a bending way, and the side part is arranged around the outer periphery of the main body part; and at least part of the side part has a thickness greater than that of the main body part along the lamination direction of the first glass layer, the second glass layer and the third glass layer.

2. The housing of claim 1, wherein the thickness of the main body portion is uniform, and the thickness of the end of the side portion connected to the main body portion is equal to the thickness of the main body portion; at least a portion of the side portion has a thickness that gradually increases from an end to which the main body portion is connected to an end that is distant from the main body portion.

3. The housing of claim 1, wherein the first glass layer, the second glass layer, and the third glass layer are a unitary structure, the second glass layer having a coefficient of thermal expansion that is greater than the coefficient of thermal expansion of the first glass layer and greater than the coefficient of thermal expansion of the third glass layer.

4. The housing of claim 1, wherein the first glass layer comprises a first body layer and a first strengthening layer that are stacked, the first body layer being disposed on a surface of the second glass layer, the first strengthening layer being disposed on a surface of the first body layer that is remote from the second glass layer, the first strengthening layer having a mechanical strength that is greater than a mechanical strength of the first body layer; the third glass layer comprises a second body layer and a second reinforcing layer which are arranged in a laminated mode, the second body layer is arranged on the surface, far away from the first glass layer, of the second glass layer, the second reinforcing layer is arranged on the surface, far away from the second glass layer, of the second body layer, and the mechanical strength of the second reinforcing layer is larger than that of the second body layer.

5. The housing of claim 4, wherein a thickness h1 of the first reinforcement layer along a layer-to-layer direction of the first body layer and the first reinforcement layer satisfies a relationship: h1 is more than or equal to 40 mu m and less than or equal to 120 mu m; the thickness h2 of the second reinforcing layer satisfies the relation: h2 is more than or equal to 40 mu m and less than or equal to 120 mu m; the compressive stress CS1 of the first glass layer satisfies the relationship: 450MPa < CS1 < 950MPa, and the central tension CT1 of the first glass layer satisfies the relation: CT1 is more than 20MPa and less than 70MPa; the compressive stress CS2 of the third glass layer satisfies the relationship: the central tension CT2 of the third glass layer satisfies the relation between 450MPa and CS2 and 950 MPa: CT2 is less than 70MPa and 20 MPa.

6. The housing of claim 1, wherein the first glass layer and the second glass layer are each transparent, and the first glass layer and the third glass layer are each chemically strengthened glass layers.

7. The case according to claim 1, wherein the thickness d of the body portion satisfies a relationship: d is more than or equal to 0.5mm and less than or equal to 0.8mm; the thickness d1 of the first sub-main body portion satisfies the relation: d1 is more than or equal to 0.1mm and less than or equal to 0.4mm; the thickness d2 of the second sub-body portion satisfies the relation: d2 is more than or equal to 0.2mm and less than or equal to 0.5mm; the thickness d3 of the third sub-main body portion satisfies the relation: d3 is more than or equal to 0.1mm and less than or equal to 0.4mm.

8. The case according to claim 1, wherein the thickness D of the side portion satisfies a relation: d is more than or equal to 0.5mm and less than or equal to 3.0mm; the thickness D1 of the first sub-side portion satisfies the relation: d1 is more than or equal to 0.15mm and less than or equal to 1.5mm; the thickness D2 of the second sub-side portion satisfies the relation: d2 is more than or equal to 0.2mm and less than or equal to 0.5mm; the thickness D3 of the third sub-side portion satisfies the relation: d3 is more than or equal to 0.15mm and less than or equal to 1.5mm.

9. The housing of claim 1, wherein the main body portion and the side portion enclose a receiving space, the side portion includes a first surface and a second surface disposed opposite to each other, the first surface faces the receiving space, the second surface faces away from the receiving space, the first surface has a first end point far away from the main body portion, and an angle θ1 between a tangent line of the first surface at the first end point and an extending direction of the main body portion satisfies a relationship θ1 being equal to or less than 90 °; the second surface is provided with a second end point far away from the main body part, the angle theta 2 between the tangent line of the second end point and the extending direction of the main body part of the second surface meets the relation theta 2 which is less than or equal to 90 degrees, and the perpendicular distance s between the first end point and the surface of the main body part facing the accommodating space meets the relation: s is more than or equal to 0.5mm and less than or equal to 8mm.

10. A method of manufacturing a housing, comprising:

providing a first glass substrate, a second glass substrate and a third glass substrate, wherein the second glass substrate has at least one color; and

sequentially overlapping the first glass substrate, the second glass substrate and the third glass substrate, and performing die casting molding to form a first glass layer on the first glass substrate, a second glass layer on the second glass substrate and a third glass layer on the third glass substrate to obtain the shell, wherein the first glass layer comprises a first sub-main body part and a first sub-side part which are connected in a bending way; the second glass layer is a colored glass layer, has at least one color and comprises a second sub-main body part and a second sub-side part which are connected in a bending way; the third glass layer comprises a third sub-main body part and a third sub-side part which are connected in a bending way; the first sub-main body part, the second sub-main body part and the third sub-main body part are sequentially stacked to form a main body part, the first sub-side part, the second sub-side part and the third sub-side part are sequentially stacked to form a side part, the side part is connected with the main body part in a bending way, and the side part is arranged around the outer periphery of the main body part; and at least part of the side part has a thickness greater than that of the main body part along the lamination direction of the first glass layer, the second glass layer and the third glass layer.

11. The method of manufacturing a housing according to claim 10, wherein the sequentially laminating the first glass substrate, the second glass substrate, and the third glass substrate, and performing die casting molding includes:

sequentially superposing the first glass substrate, the second glass substrate and the third glass substrate in a die-casting die;

gradually heating to a first temperature t1 to preheat;

gradually heating to a second temperature t2, and performing die casting forming, wherein the second temperature t2 is respectively greater than softening points of the first glass substrate, the second glass substrate and the third glass substrate, and t2 is more than t1; and

gradually cooling to a third temperature t3 to anneal, wherein t3 is less than t2.

12. The method of manufacturing a housing according to claim 11, wherein the die casting mold includes a first sub-mold and a second sub-mold; the first sub-die is provided with a concave part, the concave part comprises a bottom surface and a side surface which are connected in a bending way, and the side surface is arranged around the outer periphery of the bottom surface; the second sub-die is provided with a convex part; the sequentially overlapping the first glass substrate, the second glass substrate and the third glass substrate in the die casting mold comprises:

Sequentially superposing the first glass substrate, the second glass substrate and the third glass substrate on the bottom surface; wherein, the first glass substrate, the second glass substrate and the third glass substrate that coincide and set up include the terminal surface, the terminal surface with the distance DeltaL of side surface satisfies relational expression: delta L is more than or equal to 0.1mm and less than or equal to 4mm; and

and closing the second sub-die so that at least part of the convex part is positioned in the concave part.

13. The method of manufacturing a shell according to claim 11 or 12, wherein the first temperature t1 satisfies the relation: the temperature of the second temperature t2 is more than or equal to 650 ℃ and less than or equal to 850 ℃, the temperature of the second temperature t2 is more than or equal to 850 ℃ and less than or equal to 1200 ℃, the temperature of the third temperature t3 is more than or equal to 450 ℃ and less than or equal to 550 ℃, the pressure P of the die casting molding is more than or equal to 10Pa and less than or equal to 100Pa, and the extrusion force F of the die casting mold is more than or equal to 0.2MPa and less than or equal to F and less than or equal to 0.9MPa.

14. An electronic device, comprising:

a display assembly;

the housing of any one of claims 1 to 9 for carrying the display assembly; and

the circuit board assembly is arranged between the shell and the display assembly and is electrically connected with the display assembly and used for controlling the display assembly to display.