CN107734892B

CN107734892B - Shell manufacturing method, shell and electronic equipment

Info

Publication number: CN107734892B
Application number: CN201711052686.9A
Authority: CN
Inventors: 杨光明; 张涛; 孙文峰
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2017-10-30
Filing date: 2017-10-30
Publication date: 2020-04-10
Anticipated expiration: 2037-10-30
Also published as: CN107734892A

Abstract

The embodiment of the application discloses a shell manufacturing method, a shell and electronic equipment, wherein the shell manufacturing method comprises the following steps: providing a shell substrate, and polishing the outer surface of the shell substrate; carrying out oxidation treatment on the outer surface of the polished shell substrate to form an oxide layer on the outer surface of the shell substrate; and carrying out primary paint spraying treatment on the outer surface of the shell substrate after the oxidation treatment, spraying a self-luminous material on the outer surface of the shell substrate, and forming a first paint layer and a self-luminous layer on the oxidation layer to form an integral shell structure. The paint layer is located the outermost layer of casing surface, can make casing surface smooth and flat, difficult finger print that glues, can keep the casing surface clean and tidy.

Description

Shell manufacturing method, shell and electronic equipment

Technical Field

The application relates to the technical field of electronic equipment, in particular to a shell manufacturing method, a shell and electronic equipment.

Background

At present, the raw materials for preparing and processing the shell of electronic equipment, such as a mobile phone and a tablet personal computer, are usually aluminum materials, and the commercially available aluminum materials cannot be directly used due to the problems of hardness and the like. The raw aluminum material needs to be processed for multiple times to form the required shell structure. However, after the shell in the prior art is processed, fingerprint marks are easily adhered to the outer surface of the shell.

Disclosure of Invention

The embodiment of the application provides a shell manufacturing method, a shell and electronic equipment, which can reduce fingerprint sticking on the outer surface of the shell.

In a first aspect, an embodiment of the present application provides a method for manufacturing a housing, where the housing is applied to an electronic device, and the method for manufacturing the housing includes:

providing a shell substrate;

polishing the outer surface of the shell substrate;

carrying out oxidation treatment on the outer surface of the polished shell substrate to form an oxide layer on the outer surface of the shell substrate;

and carrying out first paint spraying treatment on the outer surface of the oxidized shell substrate, spraying a self-luminous material on the outer surface of the shell substrate, and forming a first paint layer and a self-luminous layer on the oxide layer.

In a second aspect, embodiments of the present application further provide a housing, where the housing is formed by using the housing manufacturing method described above.

In a third aspect, embodiments of the present application further provide a housing applied to an electronic device, where the housing includes an inner surface and an outer surface that are disposed opposite to each other, the housing further includes an oxide layer, a first paint layer, and a self-luminous layer, the oxide layer is formed on the outer surface of the housing, and the first paint layer and the self-luminous layer are formed on the oxide layer.

In a fourth aspect, an embodiment of the present application further provides an electronic device, which includes a housing, where the housing is the housing described above.

The method for manufacturing the shell comprises the steps of firstly, providing a shell substrate, and polishing the outer surface of the shell substrate; carrying out oxidation treatment on the outer surface of the polished shell substrate to form an oxide layer on the outer surface of the shell substrate; and carrying out primary paint spraying treatment on the outer surface of the shell substrate after the oxidation treatment, spraying a self-luminous material on the outer surface of the shell substrate, and forming a first paint layer and a self-luminous layer on the oxidation layer to form an integral shell structure. The self-luminous layer has light absorption characteristic when being illuminated and has light emission characteristic when not being illuminated, and the self-luminous layer can emit light to generate light under the condition of no illumination at night, so that a user can search for the electronic equipment with the shell to prevent the electronic equipment from being damaged by being pressed or touched on the ground. And the paint layer is positioned on the outermost layer of the outer surface of the shell, so that the surface of the shell is smooth and flat, fingerprints are not easy to stick, and the outer surface of the shell can be kept clean.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a housing according to an embodiment of the present application.

Fig. 3 is a schematic structural diagram of a rear cover according to an embodiment of the present application.

Fig. 4 is a cross-sectional view in the direction a-a of fig. 3.

Fig. 5 is another cross-sectional view in the direction a-a of fig. 3.

Fig. 6 is another cross-sectional view in the direction a-a of fig. 3.

Fig. 7 is another cross-sectional view in the direction a-a of fig. 3.

Fig. 8 is another cross-sectional view in the direction a-a of fig. 3.

Fig. 9 is another cross-sectional view in the direction a-a of fig. 3.

Fig. 10 is another schematic structural diagram of a rear cover according to an embodiment of the present application.

Fig. 11 is a cross-sectional view of fig. 10 in the direction B-B.

Fig. 12 is a schematic structural diagram of a back cover outer surface subjected to sand blasting according to an embodiment of the present application.

Fig. 13 is another schematic structural diagram of a rear cover according to an embodiment of the present application.

Fig. 14 is a cross-sectional view in the direction of C-C of fig. 13.

Fig. 15 is another cross-sectional view in the direction a-a of fig. 3.

Fig. 16 is another schematic structural diagram of the housing according to the embodiment of the present application.

Fig. 17 is another schematic structural diagram of a rear cover according to an embodiment of the present application.

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

Fig. 19 is a schematic flow chart of a method for manufacturing a rear cover according to an embodiment of the present application.

Fig. 20 is a schematic flow chart of a painting process according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

The embodiment of the application provides a shell manufacturing method, a shell and electronic equipment. The details will be described below separately.

In the present embodiment, the method for manufacturing the rear cover will be described in terms of a method for manufacturing the rear cover, which may form a housing that may be provided in an electronic device, such as a mobile phone, a tablet computer, a Personal Digital Assistant (PDA), and the like.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure. The electronic device 1 comprises a housing 10, a display 20, a printed circuit board 30, and a battery 40.

Referring to fig. 2, fig. 2 is a schematic structural diagram of a housing according to an embodiment of the present disclosure. Wherein, the casing 10 may include a cover plate 11, a middle frame 12 and a rear cover 13, the cover plate 11, the middle frame 12 and the rear cover 13 are combined with each other to form the casing 10, and the casing 10 has a closed space formed by the cover plate 11, the middle frame 12 and the rear cover 13 to accommodate the display screen 20, the printed circuit board 30, the battery 40 and the like. In some embodiments, the cover plate 11 is covered on the middle frame 12, the rear cover 13 is covered on the middle frame 12, the cover plate 11 and the rear cover 13 are located on opposite sides of the middle frame 12, the cover plate 11 and the rear cover 13 are oppositely arranged, and the closed space of the housing 10 is located between the cover plate 11 and the rear cover 13.

The cover plate 11 may be a transparent glass cover plate. In some embodiments, the cover plate 11 may be a glass cover plate made of a material such as sapphire. The middle frame 12 may be a metal casing, such as an aluminum alloy middle frame 12. It should be noted that the material of the frame 12 in the embodiment of the present application is not limited to this, and other manners may also be adopted, such as: the middle frame 12 can be a ceramic middle frame or a glass middle frame. For another example: the middle frame 12 may be a plastic middle frame. Also for example: the middle frame 12 may be a structure in which metal and plastic are matched with each other, and the plastic part may be formed by injection molding on a metal plate. Wherein the rear cover 13 may be a metal rear cover, such as an aluminum alloy rear cover.

Referring to fig. 3, fig. 3 is a schematic structural diagram of a rear cover according to an embodiment of the present disclosure. The rear cover 13 may include an inner surface 131 and an outer surface 132 opposite to each other, the inner surface 131 of the rear cover 13 is close to the middle frame 12 and the cover plate 11 to form an inner surface of the housing 10, and the outer surface 132 of the rear cover 13 is far from the middle frame 12 and the cover plate 11 to form an outer surface of the housing 10. The rear cover 13 may further include an opening 133, and the opening 133 may be mounted with a camera.

In some embodiments, the rear cover 13 includes a first side 111, a second side 112, a third side 113, and a fourth side 114 that are connected end-to-end, wherein the first side 111 and the third side 113 are opposite, and the second side 112 and the fourth side 114 are opposite. In some embodiments, the second side 112 may be located at the bottom of the electronic device 1, the fourth side 114 may be located at the top of the electronic device 1, and the first side 111 and the third side 113 may be located at both sides of the electronic device 1. Wherein the opening 133 may be located at the fourth side 114.

Referring to fig. 4, fig. 4 is a cross-sectional view taken along a-a direction of fig. 3. The rear cover 13a may include a rear cover substrate 137, an oxide layer 134, and a paint layer 136.

The rear cover substrate 137 may be made of aluminum, such as aluminum alloy. The rear cover substrate 137 includes an inner surface 131 and an outer surface 132, the inner surface of the rear cover substrate 137 may be understood as an inner surface of the rear cover 13, and the outer surface of the rear cover substrate 137 may be understood as an outer surface before the rear cover is not oxidized, painted, or the like. The rear cover substrate 137 has the same first side 111, second side 112, third side 113, and fourth side 114 as the rear cover 13 a.

Wherein an oxide layer 134 is formed on the outer surface 132 of the back cover substrate 137. The oxide layer 134 may be formed by a single oxidation to form an oxide layer 134. Such as: the oxide layer 134 is formed by monochromatic oxidation, and may be formed by coloring after the oxidation process. It should be noted that in some embodiments, a multi-layer oxide layer may also be formed by two or more oxidations.

Such as: referring to fig. 5, fig. 5 is another cross-sectional view taken along a-a direction of fig. 3. Fig. 5 differs from fig. 4 in that: the oxide layer 134 of the back cover 13b includes two layers, i.e., a first oxide layer 1341 and a second oxide layer 1342. A first oxide layer 1341 is formed on the outer surface 132 of the back cover substrate 137 and a second oxide layer 1342 is formed on the first oxide layer 1341, which may cover only a portion of the first oxide layer in some embodiments. The first oxide layer 1341 and the second oxide layer 1342 may increase the bonding force with the paint layer 136. The multi-layer structure of the oxide layer is not illustrated here. In some embodiments, the first oxide layer may be a colored oxide layer, and the second oxide layer may also be a colored oxide layer. The color of the first oxide layer may be different from or the same as the color of the second oxide layer.

Wherein the paint layer 136 is formed on the oxide layer 134, and the oxide layer 134 is located between the paint layer 136 and the back cover substrate 137. In some embodiments, the paint layer 136 may be formed by spraying a layer of paint on the oxide layer 134. The paint layer 136 is located on the outermost layer of the outer surface of the rear cover 13, and the surface of the paint layer is smooth and flat, so that fingerprint is not easy to stick on the paint layer, and the outer surface of the rear cover can be kept clean and smooth.

It is noted that in some embodiments, two or more layers of paint may be sprayed on the oxide layer 134 to form two or more paint layers. Such as: referring to fig. 6, fig. 6 is another cross-sectional view taken along a-a direction of fig. 3. Fig. 6 differs from fig. 4 in that: the paint layers 136 of the rear cover 13c include a first paint layer 1361 and a second paint layer 1362. The first paint layer 1361 is formed on the oxide layer 134 and the second paint layer 1362 is formed on the first paint layer 1361. In some embodiments, the thickness of the second paint layer 1362 is greater than the thickness of the first paint layer 1361, and further, the thickness of the second paint layer 1362 is twice the thickness of the first paint layer 1361, such as the thickness of the second paint layer 1362 is 10um and the thickness of the first paint layer 1361 is 5 um. It should be noted that there may be some error value in the production process, such as an error value of 0.5um, for example, between the second paint layer 1362 and the first paint layer 1361. The setting of second paint layer and first paint layer thickness can provide better protection to the back lid surface, makes the bonding inseparabler moreover between the two-layer paint layer.

For another example: referring to fig. 7, fig. 7 is another cross-sectional view taken along a-a direction of fig. 3. Fig. 7 differs from fig. 4 in that: the paint layers 136 of the rear cover 13d include a first paint layer 1361, a second paint layer 1362 and a third paint layer 1363. The first paint layer 1361 is formed on the oxide layer 134, the second paint layer 1362 is formed on the first paint layer 1361, and the third paint layer 1363 is formed on the second paint layer 1362. Forming two or three paint layers on the oxide layer 134 may increase the bonding force between the oxide layer and the paint layer, and may provide better protection for the rear cover. In some embodiments, the thickness of the third paint layer 1363 is greater than the thickness of the second paint layer 1362, and the thickness of the second paint layer 1362 is greater than the thickness of the first paint layer 1361. Further, the thickness of the third paint layer 1363 is twice the thickness of the second paint layer 1362, the thickness of the second paint layer 1362 is twice the thickness of the first paint layer 1361, for example, the thickness of the third paint layer 1363 is 8um, the thickness of the second paint layer 1362 is 4um, and the thickness of the first paint layer 1361 is 2 um.

In some embodiments, the thicknesses of the third paint layer 1363, the second paint layer 1362, and the first paint layer 1361 are sequentially reduced by equal thickness, such as the thickness of the third paint layer 1363 is 9um, the thickness of the second paint layer 1362 is 6um, and the thickness of the first paint layer 1361 is 3 um. The setting of third paint layer, second paint layer and first paint layer thickness can provide better protection to the back lid surface, makes bonding more inseparabler between the three-layer paint layer moreover.

In some embodiments, the paint layer may be provided transparently. It should be noted that when the paint layers are at least two layers, at least one of the paint layers may be disposed to be transparent. Further, all paint layers are arranged in a transparent mode. The back cover oxide layer is the color of the outer surface of the back cover.

To increase the bonding force between the paint layer 136 and the oxide layer 134, in some embodiments, please refer to fig. 8, which is another cross-sectional view of fig. 3 along the direction a-a. Fig. 8 differs from fig. 4 in that: the rear cover 13e may further include a bonding layer 135. The bonding layer 135 is formed on the oxide layer 134, and the paint layer 136 is formed on the bonding layer 135. In some embodiments, the bonding layer 135 may be formed on the oxide layer 134 by PVD (Physical Vapor Deposition). The bonding layer 135 is positioned between the oxide layer 134 and the paint layer 136, and may increase the bonding force between the oxide layer 134 and the paint layer 136. It should be noted that, in the embodiments of the present application, the bonding layer may also be formed on the oxide layer in other manners to increase the bonding force between the oxide layer and the paint layer.

In some embodiments, referring to fig. 9, fig. 9 is another cross-sectional view taken along a-a direction of fig. 3, where fig. 9 differs from fig. 4 in that: back lid 13f back lid base plate 137's surface forms sandblast layer 1371 that has the concave-convex structure, and the concave-convex structure on this sandblast layer 1371 can adopt the mode of sandblast to form through the sandblast machine for back lid base plate 137 surface is clean, coarse, and then can increase the cohesion that forms between oxide layer 134 and the paint layer 136 on this sandblast layer 1371. In some embodiments, the sandblasted layer 1371 covers the entire outer surface of the back cover substrate 137. It should be noted that the sandblasted layer 1371 may also be a protruding structure or a recessed structure.

In some embodiments, please refer to fig. 10, and fig. 10 is a schematic structural diagram of a rear cover according to an embodiment of the present disclosure. The outer surface of the rear cover 13g includes two pre-blasting regions 115, and the two pre-blasting regions 115 are spaced apart from each other. Specifically, two pre-sandblasting areas 115 are respectively adjacent to the first side 111 and the third side 113. Namely, a pre-blasting area 115 is disposed adjacent to the first edge 111, or a pre-blasting area 115 is disposed adjacent to the first edge 111; another pre-sandblasting area 115 is located adjacent to the third edge 113, or one pre-sandblasting area 115 is located adjacent to the third edge 113.

In some embodiments, the pre-blasting region 115 may be treated by blasting with a blasting machine to form the concave-convex structure in the pre-blasting region 115. Specifically, referring to fig. 11, fig. 11 is a cross-sectional view taken along the direction B-B in fig. 10. A sandblasted layer 1373 having a concave-convex structure is formed in the pre-sandblasted region 115, and the sandblasted layer 1373 has two portions, i.e., a first sandblasted layer 1371 and a second sandblasted layer 1372. Wherein the first sandblasting layer 1371 is formed on one of the pre-sandblasting areas 115, and the first sandblasting layer 1371 is adjacent to the first side 111. Wherein the second blasting layer 1372 is formed on the other pre-blasting region 115, the second blasting layer 1372 being adjacent to the third side 113. The first blasting layer 1371 and the second blasting layer 1372 are spaced apart from each other. It should be noted that the sandblasting layer 1373 may also be a protruding structure or a recessed structure.

In some embodiments, please refer to fig. 12, fig. 12 is a schematic structural view illustrating a sandblasting process performed on an outer surface of a rear cover according to an embodiment of the present disclosure. The distance between the second side 112 and the fourth side 114 is H1, the sandblasting layer 1373 is close to the second side 112, and the height of the sandblasting layer 1373 in the direction from the second side 112 to the fourth side 113 is H2, wherein 2/5H1< H2<4/5H 1. It should be noted that in some other embodiments, the height of the sandblasting layer 1373 can be set according to actual requirements.

The width of the sandblasting layer 1373 in the direction from the first side 111 to the third side 113 is W, wherein W is more than 1cm and less than 2 cm. It should be noted that the width of the sandblasting layer 1373 can be set according to actual requirements.

In some embodiments, the blasting layer 1373 may be an arc-shaped structure, and a bending direction of the arc-shaped structure may be a direction from the first side 111 to the third side 113.

It should be noted that, in the process of holding the electronic device 1, the area where the user holds the electronic device 1 for a long time is the outer surface of the housing of the electronic device 1, specifically, the user holds the electronic device 1 to the two side edges of the rear cover of the housing. More specifically, the width of the outer surface of the back cover in the width direction is 1-2cm, and the width of the fingers is 1-2 cm. In addition, the height duration for the user to hold the electronic apparatus 1 with the hand is more than half of the height of the electronic apparatus 1. Therefore, according to the habit of holding the electronic device 1 by a user, the region and the like, the sandblasting treatment is performed at the two side edge positions of the rear cover, and a sandblasting layer with a concave-convex structure can be formed, so that the friction force can be increased, and the anti-skid effect can be increased.

It should be noted that the pre-blasting area 115 according to the embodiment of the present application is not limited thereto, and may be one. Specifically, referring to fig. 13 and 14, fig. 13 is another structural schematic view of a rear cover according to an embodiment of the present application, and fig. 14 is a cross-sectional view of fig. 13 in a direction C-C. The differences between fig. 13 and 14 and fig. 10 and 11 are that: the pre-blasting area 115 is one, and the pre-blasting area 115 is close to the first edge 111, or the pre-blasting area 115 is adjacent to the first edge 111.

It should be noted that, when there is one pre-blasting region 115, one pre-blasting region 115 may be disposed near the third side 113.

It should be noted that the paint layer may be formed on the entire outer surface of the rear cover, or may be formed on the sandblast layer. When the paint layer is formed on the blasting layer, the paint layer may overlap the blasting layer. When the paint layers are two or more, one of the paint layers may be disposed on the sandblasted layer, or one or more of the paint layers may be disposed on the entire outer surface of the rear cover.

In some embodiments, please refer to fig. 15, fig. 15 is another cross-sectional view in the direction a-a of fig. 3. This fig. 15 differs from fig. 6 in that: a self-luminescent layer 138 is disposed between the first paint layer 1361 and the second paint layer 1362. Specifically, a self-luminous material may be sprayed between the first paint layer 1361 and the second paint layer 1362 to form the self-luminous layer 138, the self-luminous layer 138 may have a light absorbing property when illuminated and a light emitting property when not illuminated, and the self-luminous layer 138 may emit light to generate brightness when not illuminated at night, so that a user may find an electronic device having the housing to prevent the electronic device from being damaged by being pressed or touched to the ground. It should be noted that a third paint layer may also be provided on the second paint layer 1362.

In addition, in the embodiments of the present application, a self-light-emitting layer may be provided on a structure having a paint layer. Such as: the self-luminous material is sprayed into the paint layer, and specifically, the self-luminous material can be doped into the paint and then sprayed onto the outer surface of the rear cover substrate. It is to be understood that the paint layer may also be two or more layers in such a manner that the self-luminous material is disposed within the paint layer.

It should be noted that the self-light emitting layer may be formed on the oxide layer, and the paint layer may be formed on the self-light emitting layer. Such as: the self-luminous material is arranged in the adhesive and sprayed on the oxide layer, the self-luminous layer is formed by drying, and then transparent paint can be sprayed on the self-luminous layer.

The self-luminous material may include phosphor.

When two paint layers are arranged, the thickness of the second paint layer at the outer side is larger than the sum of the thicknesses of the first paint layer at the inner side and the self-luminous layer.

It should be noted that the structure of the rear cover is not limited to this, for example: the rear cover may include two or more oxide layers, two or more paint layers. For another example: the rear cover may include two or more oxide layers, two or more paint layers, and an anchor layer. For another example: the rear cover may include two or more oxide layers, two or more paint layers, and a sandblast layer. For another example: the rear cover may include two or more oxide layers, two or more paint layers, and a self-luminescent layer. It should be noted that the number of layers between the oxide layer, the bonding layer, the sandblasting layer, the self-luminous layer and the paint layer is within the protection scope of the embodiments of the present application, and will not be illustrated herein.

It should be noted that the structure of the housing according to the embodiment of the present application is not limited to this, for example, please refer to fig. 16, and fig. 16 is another schematic structural diagram of the housing according to the embodiment of the present application. Among them, a case 10a shown in fig. 16 includes a cover plate 16 and a rear cover 17. In some embodiments, the cover plate 16 is directly covered on the rear cover 17, the cover plate 16 and the rear cover 17 are combined with each other to form the housing 10a, and the housing 10a has a closed space formed by the cover plate 16 and the rear cover 17 to accommodate the display 20, the printed circuit board 30, the battery 40, and the like. Compared with the housing 10 shown in fig. 2, the housing 10a does not include the middle frame, or the middle frame 12 and the rear cover 13 in fig. 2 are integrally formed to form a rear cover 17 structure (of course, the middle frame structure may be named herein). Specifically, please refer to fig. 17, fig. 17 is another schematic structural diagram of the rear cover according to the embodiment of the present application. In some embodiments, the rear cover 17 includes an inner surface 171 and an outer surface 172, with the inner surface 171 and the outer surface 172 being oppositely disposed to form the entire surface of the rear cover 17. The various layers of the rear cover 17 can be referred to as the rear cover 13, and are not described in detail here.

The printed circuit board 30 is installed in the housing 10, the printed circuit board 30 may be a main board of the electronic device 1, and functional components such as an antenna, a motor, a microphone, a camera, a light sensor, a receiver, and a processor may be integrated on the printed circuit board 30. In some embodiments, the printed circuit board 30 is secured within the housing 10. Specifically, the printed circuit board 30 may be screwed to the middle frame 12 by screws, or may be snapped to the middle frame 12 by a snap-fit manner. It should be noted that the way of fixing the printed circuit board 30 to the middle frame 12 is not limited to this, and other ways, such as a way of fixing by a snap and a screw, may also be used.

Wherein the battery 40 is mounted in the housing 10, and the battery 40 is electrically connected to the printed circuit board 30 to supply power to the electronic device 1. The case 10 may serve as a battery cover of the battery 40. The case 10 covers the battery 40 to protect the battery 40, and particularly, the rear cover 13 covers the battery 40 to protect the battery 40, reducing damage to the battery 40 due to a collision, a fall, or the like of the electronic apparatus 1.

Wherein the display screen 20 is installed in the housing 10, and at the same time, the display screen 20 is electrically connected to the printed circuit board 30 to form a display surface of the electronic device 1. The display screen 20 includes a display area 14 and a non-display area 15. The display area 14 may be used to display a screen of the electronic device 1 or provide a user with touch control. The top area of the non-display area 15 is provided with an opening for transmitting sound and light, and the bottom of the non-display area 15 can be provided with functional components such as a fingerprint module, a touch key and the like. The cover plate 11 is mounted on the display screen 20 to cover the display screen 20, and forms the same display area and non-display area as the display screen 20, which can be referred to specifically as the display area and the non-display area of the display screen 20.

The structure of the display screen 20 is not limited to this. For example, the display screen may be a full-screen or an opposite-type screen, specifically, please refer to fig. 18, and fig. 18 is another schematic structural diagram of the electronic device according to the embodiment of the present application. The electronic device in fig. 18 differs from the electronic device in fig. 1 in that: the non-display area 15a is directly formed on the display screen 20a, for example, the non-display area 15a of the display screen 20a is provided with a transparent structure so that an optical signal can pass through, or the non-display area of the display screen 20a is directly provided with an opening or a notch for light conduction, and the like, and a front camera, a photoelectric sensor, and the like can be arranged at the position of the non-display area so that the front camera can take a picture and the photoelectric sensor can detect. The display area 14a is spread over the entire surface of the electronic apparatus 1 a. It should be noted that the components of the housing 10, the printed circuit board 30, the battery 40, and the like in the electronic device 1a can refer to the above contents, and are not described herein again.

It should be noted that the display screen may also be displayed in full screen without setting the non-display area.

In order to further describe the housing structure of the embodiments of the present application, a housing manufacturing method is taken as an example and described in detail below. The manufacturing method of the housing may specifically include a rear cover manufacturing method and a middle frame manufacturing method. The following description will be made by taking a method for manufacturing a case and a method for manufacturing a rear cover as an example, and it is to be understood that the method for manufacturing a case in the embodiment of the present application is not limited to the rear cover.

Referring to fig. 19, fig. 19 is a schematic flow chart illustrating a method for manufacturing a rear cover according to an embodiment of the present disclosure. The manufacturing method of the rear cover comprises the following steps:

in step 101, a back cover substrate is provided. The rear cover substrate may be a metal material, such as aluminum, and further, such as aluminum alloy. The rear cover substrate may be purchased as it is, or may be obtained by processing a plate material, for example, by performing processes such as forging and aging on an aluminum alloy plate material. It should be noted that the back cover substrate may include the same first side, second side, third side and fourth side as the back cover, which can be referred to above.

The rear cover substrate may include an inner surface and an outer surface that are oppositely disposed, and the rear cover substrate and the inner surface and the outer surface thereof may refer to the above contents, which are not described herein again.

In step 102, a polishing process is performed on an outer surface of the back cover substrate. So that the outer surface of the back cover substrate is flat.

In some embodiments, the outer surface of the back cover substrate may be polished mechanically, chemically, electrochemically, ultrasonically, or the like. So that the surface roughness of the back cover substrate is reduced to obtain a bright and flat surface of the outer surface of the back cover substrate. The chemical polishing mode is to regularly dissolve the outer surface of the back cover substrate to achieve smoothness and flatness. The electrochemical polishing mode is that the outer surface of the back cover substrate is used as an anode, insoluble metal is used as a cathode, the two electrodes are immersed into an electrolytic tank at the same time, and direct current is conducted to generate selective anode solution, so that the brightness of the outer surface of the back cover substrate is increased. The mechanical polishing is carried out by cutting the outer surface of the rear cover substrate, and the polished convex part is removed by plastic deformation of the outer surface of the rear cover substrate to obtain a smooth surface. The ultrasonic polishing mode is that the back cover substrate is put into the abrasive suspension and placed in an ultrasonic field together, and the abrasive is ground and polished on the surface of a workpiece under the oscillation action of ultrasonic waves.

In some embodiments, before polishing the outer surface of the rear cover substrate, the outer surface of the rear cover substrate may be polished, and then the outer surface of the rear cover substrate after polishing is polished, so that the polishing effect is better, and the outer surface of the rear cover substrate is smoother. Here, it should be noted that the grinding process is understood as a rough process before the polishing process. That is, the outer surface of the rear cover substrate may be subjected to rough polishing once and then to fine polishing once, thereby completing the polishing process.

In step 103, the outer surface of the polished rear cover substrate is oxidized to form an oxide layer on the outer surface of the rear cover substrate.

In some embodiments, the polished outer surface of the back cover substrate may be subjected to at least one oxidation process to form an oxide layer, or oxide film. Each oxidation may be colored during the oxidation process to provide the desired appearance color. Such as: the outer surface of the polished rear cover substrate may be subjected to a primary oxidation process to form an oxide layer, and a coloring process after the oxidation process to form a desired color, such as red, blue, etc.

In some embodiments, the polished outer surface of the rear cover substrate may be oxidized twice or more to form at least two oxide layers, and the oxide layers may be colored during the oxidation process to form a desired appearance color. The protective effect on the outer surface of the rear cover substrate is better through two or more times of oxidation treatment, and the bonding force between at least two layers formed after two or more times of oxidation and the paint layer is better.

In some embodiments, the oxide layer covers an outer surface of the back cover substrate.

In step 104, a first paint spraying process is performed on the outer surface of the oxidized rear cover substrate, and a self-luminous material is sprayed on the outer surface of the rear cover substrate, so that a first paint layer and a self-luminous layer are formed on the outer surface of the rear cover substrate. The first paint layer and the self-luminous layer are formed on the oxide layer to form an integral rear cover structure.

The self-luminous material may include phosphor.

After the oxidation treatment, the outer surface of the rear cover substrate may be subjected to oxidation treatment one or more times. In some embodiments, a paint layer may be formed by performing a painting process on the oxide layer once, or two or more paint layers may be formed by performing a painting process on the oxide layer twice or more. When the oxide layer has only one layer or two or more layers, a paint layer may be formed by directly performing one-time painting treatment on the oxide layer, or two or more paint layers may be formed by performing two or more times of painting treatment on the oxide layer.

In some embodiments, after the at least one paint spraying process is performed on the outer surface of the oxidized rear cover substrate, the outer surface of the rear cover substrate may be subjected to at least one baking process, and a high temperature baking may be employed to dry the paint sprayed on the outer surface of the rear cover substrate to form a paint layer. For example, the outer surface of the rear cover substrate is baked at a baking temperature of 80 ℃ for 1 hour. It should be noted that, after each paint spraying treatment, a baking treatment may be performed. The primary painting process will be described as an example.

In some embodiments, the outer surface of the oxidized rear cover substrate is subjected to a first paint spraying treatment, and a self-luminous material is sprayed on the outer surface of the oxidized rear cover substrate during the first paint spraying treatment; and carrying out primary baking treatment on the outer surface of the rear cover substrate after primary paint spraying treatment and self-luminous material spraying, forming a first paint layer on the oxide layer, and forming a self-luminous layer in the first paint layer. Specifically, the self-luminous material may be doped into the paint to form a first paint, and the first paint may be sprayed onto the outer surface of the oxidized rear cover substrate. And then, carrying out baking treatment to form a first paint layer and a self-luminous layer on the oxide layer.

The self-luminous material can also be doped on other adhesives, the adhesive with the self-luminous material is directly sprayed on the oxide layer, the adhesion is realized, and the self-luminous layer is formed after drying. And then performing primary paint spraying treatment on the self-luminous layer.

The self-luminous material can be sprayed on the paint to realize adhesion, and then the baking treatment is carried out. Thereby forming a self-luminescent layer on the first paint layer. Specifically, the outer surface of the oxidized rear cover substrate is subjected to primary paint spraying treatment; spraying a self-luminous material on the outer surface of the rear cover substrate subjected to the first paint spraying treatment; and carrying out primary baking treatment on the outer surface of the rear cover substrate after the self-luminous material is sprayed and treated, forming a first paint layer on the oxide layer, and forming a self-luminous layer on the first paint layer.

This first paint layer can be located the outmost of back lid surface, and its surface is smooth and level, and is difficult for gluing the fingerprint, can keep back lid surface clean smooth.

It is to be noted that the second painting treatment or more painting treatments may be performed after the above first painting treatment and the painting of the self-luminous material. Referring to fig. 20, fig. 20 is a schematic flow chart of a painting process according to an embodiment of the present application. The process of the paint spraying treatment comprises the following steps:

in step 1041, a first paint spraying process is performed on the outer surface of the oxidized rear cover substrate. And spraying paint for the first time on the outer surface of the oxidized rear cover substrate, and spraying a layer of transparent paint.

In some embodiments, the first painting process may be performed on the entire outer surface of the rear cover substrate, that is, the first painting process may be performed on the entire outer surface of the rear cover substrate.

In step 1042, a first baking process is performed on the outer surface of the rear cover substrate after the first paint spraying process, so as to form a first paint layer on the outer surface of the rear cover substrate. The first painting process and the baking process may increase the bonding force of the oxide layer and the first paint.

In some embodiments, the first paint layer may cover the entire outer surface of the rear cover substrate.

It should be noted that, the manner of spraying the self-luminous material in the first paint spraying process can refer to the above contents, and is not described herein again.

In step 1043, a second paint spraying process is performed on the outer surface of the rear cover substrate after the first baking process. And carrying out secondary paint spraying treatment on the outer surface of the rear cover substrate subjected to the primary baking treatment, and spraying transparent paint.

In some embodiments, the second painting process may be performed over the entire outer surface of the back cover substrate.

It should be noted that, in the first painting process and the second painting process, at least one painting process is performed to cover the entire outer surface of the rear cover substrate. The two-time paint spraying treatment process can be used for performing paint spraying treatment on the sand blasting layer at one time and performing paint spraying treatment on the whole outer surface of the rear cover substrate at one time. Or the whole outer surface of the rear cover substrate can be painted twice.

In step 1044, the second baking process is performed on the outer surface of the rear cover substrate after the second paint spraying process, and a second paint layer is formed on the outer surface of the rear cover substrate, so as to form an integral rear cover structure.

Wherein the second paint layer may be formed on the first paint layer. The second paint layer may also be formed on the oxide layer and the first paint layer. In some embodiments, at least one of the first and second paint layers covers the entire outer surface of the rear cover substrate.

In some embodiments, the first and second paint layers are both formed of clear paint. It should be noted that one of the first and second paint layers may be a transparent paint layer.

It should be noted that three paint spraying treatments and three baking treatments may also be performed, and are not described herein again. The thickness relationship among the paint layers can be referred to above, and is not described herein again. Further, the painting treatment and the baking treatment may be performed three or more times.

In some embodiments, the outer surface of the oxidized substrate may be subjected to a physical vapor deposition process prior to the painting process to form a bonding layer on the outer surface of the substrate. And then carrying out paint spraying treatment on the outer surface of the rear cover substrate subjected to physical vapor deposition treatment.

Specifically, after the oxidation treatment, in order to increase the bonding force between the paint layer and the oxide layer, a bonding layer may be formed on the oxide layer by physical vapor deposition, and then a paint spraying treatment may be performed on the bonding layer to form the paint layer on the bonding layer. The bonding layer can increase the bonding force of the oxide layer and the paint layer, and the protective effect on the outer surface of the rear cover substrate is better.

In summary, the method for manufacturing the rear cover provided by the embodiment of the application can sequentially form at least one oxide layer, a self-luminous layer and one or two or more paint layers on the outer surface of the rear cover, the paint layers are formed on the outermost layer of the outer surface of the rear cover, the surface of the paint layers is high and transparent, so that the surface of the paint layers is smooth and flat, fingerprints are not easy to stick, and the outer surface of the rear cover can be kept clean.

Those skilled in the art will appreciate that the structure of the electronic device 1 shown in fig. 1 does not constitute a limitation of the electronic device 1. The electronic device 1 may comprise more or fewer components than shown, or some components may be combined, or a different arrangement of components. The electronic device 1 may further include a memory, a bluetooth module, etc., which will not be described herein.

The above detailed description is provided for the housing manufacturing method, the housing and the electronic device provided in the embodiments of the present application, and the principle and the implementation of the present application are described in this document by applying specific examples, and the description of the above embodiments is only used to help understanding the present application. Meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. A shell manufacturing method is applied to electronic equipment, and is characterized by comprising the following steps:

providing a shell substrate, wherein the shell substrate comprises a first edge, a second edge, a third edge and a fourth edge which are sequentially connected, the first edge is the top end of a display picture of the electronic equipment, the shell substrate comprises two preset sand blasting areas, one preset sand blasting area is close to the first edge, the other preset sand blasting area is close to the third edge, and the distance between the second edge and the fourth edge is H1;

polishing the outer surface of the shell substrate;

performing sand blasting treatment on the preset sand blasting area close to the first edge to form a first sand blasting layer with an uneven structure in the preset sand blasting area, and performing sand blasting treatment on the preset sand blasting area close to the third edge to form a second sand blasting layer with an uneven structure in the preset sand blasting area, wherein the heights of the first sand blasting layer and the second sand blasting layer from the second edge to the fourth edge are both H2, 2/5H1 is less than H2<4/5H1, the widths of the first sand blasting layer and the second sand blasting layer from the first edge to the third edge are both W, and 1cm is less than W <2 cm;

carrying out oxidation treatment on the outer surface of the polished shell substrate to form an oxide layer on the outer surface of the shell substrate, wherein the oxide layer is formed on the sand blasting layer;

carrying out at least three times of paint spraying treatment on the outer surface of the shell substrate after the oxidation treatment, spraying a self-luminous material on the outer surface of the shell substrate in at least three times of paint spraying treatment processes, forming a first paint layer, a self-luminous layer, a second paint layer and a third paint layer on the oxidation layer, wherein the first paint layer, the second paint layer and the third paint layer are sequentially stacked, at least two layers of the first paint layer, the second paint layer and the third paint layer are arranged on the self-luminous layer, and at least one layer of the first paint layer, the second paint layer and the third paint layer is formed on the first sand spraying layer and the second sand spraying layer;

the thicknesses of the third paint layer, the second paint layer and the first paint layer are sequentially decreased in an equal thickness mode; or

The thickness of the third paint layer is twice the thickness of the second paint layer, which is twice the thickness of the first paint layer, to prevent fingerprint sticking on the outer surface of the housing.

2. The housing manufacturing method according to claim 1, wherein the steps of performing at least three painting processes on the outer surface of the housing substrate after the oxidation process and spraying a self-luminous material on the outer surface of the housing substrate during the at least three painting processes include:

performing primary paint spraying treatment on the outer surface of the shell substrate subjected to the oxidation treatment;

spraying a self-luminous material on the outer surface of the shell substrate subjected to the first paint spraying treatment;

carrying out primary baking treatment on the outer surface of the shell substrate after the treatment of spraying the self-luminous material, forming a first paint layer on the oxide layer, and forming a self-luminous layer on the first paint layer;

carrying out secondary paint spraying treatment on the outer surface of the shell subjected to the primary baking treatment;

carrying out secondary baking treatment on the outer surface of the shell subjected to the secondary paint spraying treatment, and forming a second paint layer on the outer surface of the shell, wherein the second paint layer is formed on the self-luminous layer;

carrying out third paint spraying treatment on the outer surface of the shell subjected to the second baking treatment;

and carrying out third baking treatment on the outer surface of the shell subjected to the third paint spraying treatment, so as to form a third paint layer on the outer surface of the shell, wherein the third paint layer is formed on the second paint layer.

3. The housing manufacturing method according to claim 1, wherein the steps of performing at least three painting processes on the outer surface of the housing substrate after the oxidation process and spraying a self-luminous material on the outer surface of the housing substrate during the at least three painting processes include:

carrying out first paint spraying treatment on the outer surface of the shell substrate subjected to the oxidation treatment, and spraying a self-luminous material on the outer surface of the shell substrate subjected to the oxidation treatment in the first paint spraying treatment process;

carrying out first baking treatment on the outer surface of the shell substrate after the first paint spraying treatment and the self-luminous material spraying treatment, forming a first paint layer on the oxide layer, and forming a self-luminous layer in the first paint layer;

carrying out second baking treatment on the outer surface of the shell subjected to the second paint spraying treatment, and forming a second paint layer on the outer surface of the shell, wherein the second paint layer is formed on the first paint layer;

4. The housing manufacturing method according to claim 3, wherein the steps of performing at least three painting processes on the outer surface of the housing substrate after the oxidation process and spraying a self-luminous material on the outer surface of the housing substrate after the oxidation process in the first painting process during the at least three painting processes include:

doping a self-luminous material into the paint to form a first paint;

and spraying the first paint on the outer surface of the shell substrate after the oxidation treatment.

5. The housing manufacturing method according to claim 1, wherein the steps of performing at least three painting processes on the outer surface of the housing substrate after the oxidation process and spraying a self-luminous material on the outer surface of the housing substrate during the at least three painting processes include:

spraying a self-luminous material on the outer surface of the shell substrate after the oxidation treatment;

performing first paint spraying treatment on the outer surface of the shell substrate sprayed with the self-luminous material;

carrying out primary baking treatment on the outer surface of the shell substrate subjected to the primary paint spraying treatment, forming a self-luminous layer on the oxide layer, and forming a first paint layer on the self-luminous layer;

6. The method of manufacturing a housing according to any of claims 1 to 5, wherein the thickness of the third paint layer is 8um, the thickness of the second paint layer is 4um, and the thickness of the first paint layer is 2 um.

7. The method of manufacturing a housing according to any of claims 1 to 5, wherein the thickness of the third paint layer is 9um, the thickness of the second paint layer is 6um, and the thickness of the first paint layer is 3 um.

8. The method for making a housing according to any one of claims 1 to 5, wherein at least one of said first, second and third paint layers is a transparent paint layer.

9. The housing production method according to any one of claims 1 to 5, wherein, before the step of subjecting the outer surface of the housing substrate to polishing treatment, the housing production method further comprises:

polishing the outer surface of the shell substrate;

the step of performing a polishing process on the outer surface of the housing substrate includes:

and polishing the outer surface of the shell substrate after the grinding treatment.

10. The housing manufacturing method according to any one of claims 1 to 5, wherein before the steps of performing at least three painting treatments on the outer surface of the housing substrate after the oxidation treatment and spraying a self-luminous material on the outer surface of the housing substrate after the oxidation treatment in at least three painting treatments, the housing manufacturing method further comprises:

carrying out physical vapor deposition treatment on the outer surface of the shell substrate subjected to oxidation treatment to form a bonding layer on the oxidation layer;

the steps of performing at least three times of paint spraying treatment on the outer surface of the casing substrate after the oxidation treatment and spraying the self-luminous material on the outer surface of the casing substrate in at least three times of paint spraying treatment processes include:

and performing at least three times of paint spraying treatment on the outer surface of the shell substrate subjected to the physical vapor deposition treatment, spraying a self-luminous material on the outer surface of the shell substrate in at least three times of paint spraying treatment processes, and forming a first paint layer, a self-luminous layer, a second paint layer and a third paint layer on the bonding layer.

11. A housing for use in an electronic device, wherein the housing is formed by a method according to any one of claims 1 to 10.

12. A shell is applied to electronic equipment and is characterized in that the shell comprises a first edge, a second edge, a third edge and a fourth edge which are sequentially connected, the first edge is the top end of a display picture of the electronic equipment, the distance between the second edge and the fourth edge is H1, the shell comprises an inner surface and an outer surface which are oppositely arranged, the shell further comprises a first sand blasting layer, a second sand blasting layer, an oxidation layer, a first paint layer, a self-luminous layer, a second paint layer and a third paint layer, the first sand blasting layer and the second sand blasting layer are both provided with concave-convex structures, the first sand blasting layer and the second sand blasting layer are both formed in preset sand blasting areas of the shell, one preset sand blasting area is close to the first edge, the other preset sand blasting area is close to the third edge, and the heights of the first sand blasting layer and the second sand blasting layer from the second edge to the fourth edge are both H2, 2/5H1< H2<4/5H1, the width of the first sand-blasting layer and the second sand-blasting layer in the direction from the first edge to the third edge is W, wherein 1cm < W <2cm, the oxide layer is formed on the outer surface of the shell, the oxide layer is formed on the first sand-blasting layer and the second sand-blasting layer, the first paint layer, the self-luminescent layer, the second paint layer and the third paint layer are formed on the oxide layer, at least two layers of the first paint layer, the second paint layer and the third paint layer are arranged on the self-luminescent layer, and at least one layer of the first paint layer, the second paint layer and the third paint layer is formed on the first sand-blasting layer and the second sand-blasting layer.

13. The housing of claim 12, wherein the self-emissive layer is formed within the first paint layer.

14. The housing of claim 12, wherein the self-luminous layer is formed on the first paint layer.

15. The housing according to claim 12, wherein the self-luminous layer is formed on the oxide layer, and the first paint layer is formed on the self-luminous layer.

16. The housing according to any of the claims 12 to 15, characterized in that the thickness of the third paint layer is 8um, the thickness of the second paint layer is 4um and the thickness of the first paint layer is 2 um.

17. The housing according to any of claims 12 to 15, characterized in that the thickness of the third paint layer is 9um, that of the second paint layer is 6um, and that of the first paint layer is 3 um.

18. The housing according to any one of claims 12 to 15, wherein at least one of the first, second and third paint layers is a transparent paint layer.

19. An electronic device characterized by comprising a housing as claimed in any one of claims 11 to 18.