CN107683037A - Shell manufacturing method, shell and electronic device - Google Patents

Abstract

The embodiment of the present application discloses a kind of method for producing shell, housing and electronic equipment, wherein, method for producing shell includes：One substrate is provided, successively the outer surface to substrate be polished, sandblasting and oxidation processes, the local surfaces spraying shielding layer of outer surface of substrate after the oxidation processes, to form shaded areas and non-obstructing region, spray painting processing is carried out to the whole outer surface of substrate after the local surfaces spraying shielding layer, to form the skin of paint for including silver powder, the shielding layer is removed, so that the silver powder in the sandblasting face and non-obstructing region that shaded areas is presented in the outer surface of substrate highlights face.The sandblasting face of the application can cause the regional area of housing outer surface to have certain cleannes and different roughness, silver powder, which highlights face, can cause highlighted, smooth, the not easy to stick fingerprint of the regional area silver powder of housing outer surface, and housing outer surface can be kept clean and tidy.

Description

Shell manufacturing method, shell and electronic device

technical field

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

Background technique

At present, the raw materials for the preparation and processing of electronic equipment, such as mobile phones and tablet computers, are usually aluminum materials, while commercially purchased aluminum materials cannot be used directly due to their own hardness and other problems. The raw aluminum material needs to be processed multiple times to form the required shell structure. However, after the casing in the prior art is processed, the outer surface of the casing is easy to stick fingerprints.

Contents of the invention

Embodiments of the present application provide a method for manufacturing a casing, a casing and an electronic device, which can reduce sticking of fingerprints on the outer surface of the casing.

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

providing a substrate;

polishing the outer surface of the substrate;

Sandblasting the outer surface of the polished substrate;

Oxidizing the outer surface of the substrate after the blasting treatment;

Spraying a shielding layer on the partial surface of the outer surface of the substrate after the oxidation treatment to form a shielded area and a non-shielded area;

Spraying paint on the entire outer surface of the substrate after spraying the masking layer on the local surface to form a paint layer covering the masking area and the non-masking area, wherein the paint layer includes a silver powder paint layer;

The shielding layer is removed, so that the outer surface of the substrate presents a sandblasted surface in the shielded area and a silver powder high-gloss surface in the non-shielded area.

In a second aspect, the embodiment of the present application further provides a casing, which is formed by using the casing manufacturing method as described above.

In a third aspect, the embodiment of the present application also provides a casing, which is applied to an electronic device, and is applied to an electronic device. The casing includes an inner surface and an outer surface oppositely arranged, and the outer surface of the casing includes The first area and the second area, wherein, the first area is formed with a sandblasted surface, and the second area is formed with a silver powder high-gloss surface.

In a fourth aspect, the embodiment of the present application further provides an electronic device, which includes a casing, and the casing is the above-mentioned casing.

In the shell manufacturing method provided in the embodiment of the present application, firstly, a substrate is provided, and the outer surface of the substrate is polished, and the polished outer surface of the substrate is sandblasted, and the sandblasted Carry out oxidation treatment on the outer surface of the substrate, spray a masking layer on the partial surface of the outer surface of the substrate after the oxidation treatment, to form a shielding area and a non-shielding area, and spray paint on the entire outer surface of the substrate after spraying the masking layer on the partial surface , to form a paint layer that covers the masked area and the non-masked area, wherein the paint layer includes a silver powder paint layer, and the masked layer is removed so that the outer surface of the substrate presents the sandblasted surface of the masked area and the non-masked Areas of silver powder highlighting. A part of the sandblasting oxide layer is exposed on the shielded area of the outer surface of the shell to form a sandblasting surface, which can make the local area of the outer surface of the shell have a certain degree of cleanliness and different roughness, and the silver powder paint layer is located on the non-shielding area of the outer surface of the shell The outermost layer of the area is to form a high-gloss surface of silver powder, which can make the local area of the outer surface of the shell bright, smooth and flat, and is not easy to stick fingerprints, and can keep the outer surface of the shell clean. The special effect of silver powder high gloss surface.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can also be obtained based on these drawings without any creative effort.

FIG. 1 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.

FIG. 2 is a schematic structural diagram of a casing provided by an embodiment of the present application.

FIG. 3 is a schematic structural diagram of a back cover provided by an embodiment of the present application.

FIG. 4 is another structural schematic diagram of the back cover provided by the embodiment of the present application.

Fig. 5 is a cross-sectional view of Fig. 3 along the direction A-A.

Fig. 6 is another cross-sectional view of Fig. 3 along the direction A-A.

Fig. 7 is another cross-sectional view of Fig. 3 along the direction A-A.

FIG. 8 is another cross-sectional view of FIG. 3 along the direction A-A.

Fig. 9 is another cross-sectional view of Fig. 3 along the direction A-A.

Fig. 10 is another cross-sectional view of Fig. 3 along the direction A-A.

Fig. 11 is another cross-sectional view of Fig. 3 along the direction A-A.

FIG. 12 is another perspective view of the rear cover provided in FIG. 3 .

Fig. 13 is another cross-sectional view of Fig. 3 along the direction A-A.

FIG. 14 is another structural schematic diagram of the casing provided by the embodiment of the present application.

FIG. 15 is another schematic structural view of the rear cover provided by the embodiment of the present application.

FIG. 16 is another schematic structural diagram of an electronic device provided by an embodiment of the present application.

FIG. 17 is a schematic flowchart of a method for manufacturing a back cover provided by an embodiment of the present application.

FIG. 18 is a schematic flow chart of the oxidation treatment of the rear cover according to the embodiment of the present application.

FIG. 19 is a schematic diagram of the masking process provided by the embodiment of the present application.

Fig. 20 is a process schematic diagram of the painting treatment provided in the embodiment of the present application.

Fig. 21 is a schematic flow chart of the painting treatment provided by the embodiment of the present application.

Fig. 22 is another schematic diagram of the painting process provided by the embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Apparently, the described embodiments are only some of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of this application.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation indicated by rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as limiting the application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of said features. In the description of the present application, "plurality" means two or more, unless otherwise specifically defined.

In the description of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected, or electrically connected, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediary, and it can be the internal communication of two components or the interaction of two components relation. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.

In this application, unless otherwise expressly specified and limited, a first feature being "on" or "under" a second feature may include direct contact between the first and second features, and may also include the first and second features Not in direct contact but through another characteristic contact between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. "Below", "beneath" and "under" the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

The following disclosure provides many different implementations or examples for implementing different structures of the present application. To simplify the disclosure of the present application, components and arrangements of specific examples are described below. Of course, they are examples only and are not intended to limit the application. Furthermore, the present application may repeat reference numerals and/or reference letters in various instances, such repetition is for simplicity and clarity and does not in itself indicate a relationship between the various embodiments and/or arrangements discussed. In addition, various specific process and material examples are provided herein, but one of ordinary skill in the art may recognize the use of other processes and/or the use of other materials.

Embodiments of the present application provide a casing manufacturing method, casing and electronic equipment. The details will be described respectively below.

In this embodiment, it will be described from the perspective of the manufacturing method of the back cover. The manufacturing method of the casing can form a casing, and the casing can be arranged in an electronic device, such as a mobile phone, a tablet computer, a PDA (Personal Digital Assistant, PDA) )Wait.

Please refer to 1. FIG. 1 is a schematic structural diagram of an electronic device provided in an embodiment of the present application. The electronic device 1 includes a casing 10 , a display screen 20 , a printed circuit board 30 , and a battery 40 .

Please refer to FIG. 2 . FIG. 2 is a schematic structural diagram of a housing provided in an embodiment of the present application. Wherein, the housing 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 to form the housing 10, and the housing 10 has a The enclosed space formed by the frame 12 and the rear cover 13 is used to accommodate components such as the display screen 20 , the printed circuit board 30 , and the battery 40 . In some embodiments, the cover plate 11 is set on the middle frame 12, and the back cover 13 is set on the middle frame 12. The cover plate 11 and the back cover 13 are located on the opposite sides of the middle frame 12. The cover plate 11 and the back cover 13 Relatively, the closed space of the casing 10 is located between the cover plate 11 and the rear cover 13 .

Wherein, 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 materials such as sapphire. Wherein, the middle frame 12 may be a metal shell, such as the 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 thereto, and other methods may also be used, for example, the middle frame 12 may be a ceramic middle frame or a glass middle frame. Another example: the middle frame 12 may be a plastic middle frame. For another example, the middle frame 12 can be a structure in which metal and plastic cooperate with each other, and the plastic part can be formed by injection molding on a metal plate. Wherein, the back cover 13 may be a metal back cover, such as an aluminum alloy back cover.

Please refer to FIG. 3 and FIG. 4 together. FIG. 3 and FIG. 4 are schematic structural diagrams of the rear cover provided by the embodiment of the present application. The back cover 13 may include an inner surface 131 and an outer surface 132 oppositely arranged. The inner surface 131 of the back cover 13 is close to the middle frame 12 and the cover plate 11 to form the inner surface of the casing 10. The outer surface 132 of the back cover 13 The outer surface 132 of the casing 10 is formed away from the middle frame 12 and the cover 11 . The back cover 13 can also include a crater 133, and the crater 133 can install a camera. Wherein, the outer surface 132 of the casing 10 further includes a first area 132a and a second area 132b. As shown in FIG. 3 , the colors of the first region 132 a and the second region 132 b may be the same; as shown in FIG. 4 , the colors of the first region 132 a and the second region 132 b may be different.

Please also refer to FIG. 5 . FIG. 5 is a cross-sectional view of FIG. 3 along the direction A-A. The rear cover 13 a may include a rear cover substrate 137 , an oxide layer 134 and a paint layer 136 .

Wherein, the rear cover substrate 137 can 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 can be understood as the inner surface of the rear cover 13, and the outer surface of the rear cover substrate 137 can be understood as the unoxidized, painted surface of the rear cover. etc. before the outer surface.

Wherein, the oxide layer 134 is formed on the outer surface 132 of the rear cover substrate 137 . The oxide layer 134 can be oxidized once to form an oxide layer 134 . For example, the oxide layer 134 is formed by monochromatic oxidation, which can be specifically formed by coloring after an oxidation process. It should be noted that, in some embodiments, two oxidations or more than two oxidations may also be used to form a multilayer oxide layer.

Wherein, the outer surface 132 of the back cover substrate 137 includes a first region 132a and a second region 132b, the oxide layer 134 includes a first oxide layer 134a and a second oxide layer 134b, and the first oxide layer 134a is formed on the back cover. On the first region 132a of the outer surface 132 of the substrate 137, the second oxide layer 134b is formed on the second region 132b of the outer surface 132 of the rear cover substrate 137, and the paint layer 136 is formed on the second oxide layer 134b . The areas of the first region 132a and the second region 132b may be the same or different. In some embodiments, the paint layer 136 may be a silver powder paint layer, and an oxidized surface may be formed on the first region 132a, and a silver powder highlight surface may be formed on the second region 132b.

For example: Please refer to FIG. 6, which is another cross-sectional view of FIG. 3 along the direction A-A. The difference between FIG. 6 and FIG. 5 is that the oxide layer 134 of the back cover 13b includes two layers, namely, the first oxide layer 1341 and the second oxide layer 1342 . The first oxide layer 1341 is formed on the outer surface 132 of the rear cover substrate 137, and the second oxide layer 1342 is formed on the first oxide layer 1341. In some embodiments, the second oxide layer 1342 may only cover the first oxide layer. Part of layer 1341. The first oxide layer 1341 and the second oxide layer 1342 can increase the bonding force between the oxide layer 134 and the paint layer 136 . Wherein, the multi-layer structure of the oxide layer will not be illustrated one by one here. In some embodiments, the first oxide layer 1341 may be a colored oxide layer, and the second oxide layer 1342 may also be a colored oxide layer. The color of the first oxide layer 1341 may be different from that of the second oxide layer 1342, or may be the same. 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 rear cover substrate 137 . In some embodiments, a layer of paint can be sprayed on the oxide layer 134 to form the paint layer 136 . The paint layer 136 is located at the outermost layer of the outer surface of the back cover 13, and its surface is smooth and smooth, not easy to stick fingerprints, and can keep the outer surface of the back cover clean and smooth.

Wherein, the outer surface 132 of the rear cover substrate 137 includes a first region 132a and a second region 132b, the oxide layer 134 includes a first layer oxide layer 1341 and a second layer oxide layer 1342, and the first layer oxide layer 1341 includes a first layer oxide layer Oxide layer 1341a and second first layer oxide layer 1341b, the second layer oxide layer 1342 includes first layer oxide layer 1342a and second layer oxide layer 1342b, the first first layer oxide layer 1341a is formed on the rear cover substrate 137 On the first region 132a of the outer surface 132, the first first oxide layer 1342a is formed on the first first oxide layer 1341a, and the second first oxide layer 1341b is formed on the outer surface 132 of the rear cover substrate 137 On the second region 132b, the second secondary oxide layer 1342b is formed on the second primary oxide layer 1341b, and the paint layer 136 is formed on the second secondary oxide layer 1342b. In some embodiments, the paint layer 136 may be a silver powder paint layer, and an oxidized surface may be formed on the first region 132a, and a silver powder highlight surface may be formed on the second region 132b.

It should be noted that, in some embodiments, two layers of paint or more than two layers of paint may also be sprayed on the oxide layer 134 to form two layers of paint or multiple layers of paint. For example: Please refer to FIG. 7, which is another cross-sectional view of FIG. 3 along the direction A-A. The difference between FIG. 7 and FIG. 5 is that: the paint layer 136 of the back cover 13c includes a first paint layer 1361 and a second paint layer 1362 . The first paint layer 1361 is formed on the second oxide layer 134 b of 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, further, the thickness of the second paint layer 1362 is twice the thickness of the first paint layer 1361, such as the second paint layer 1362 The thickness of the first paint layer 1361 is 10um, and the thickness of the first paint layer 1361 is 5um. It should also be noted that there may be a certain error value between the second paint layer 1362 and the first paint layer 1361 during the production process, for example, the error value is 0.5um. The setting of the thickness of the second paint layer and the first paint layer can provide better protection for the outer surface of the back cover, and make the adhesion between the two paint layers more compact. In some embodiments, at least one layer of silver powder paint layer is included in the first paint layer 1361 and the second paint layer 1362, then an oxidized surface can be formed in the first region 132a, and a silver powder layer can be formed in the second region 132b. Glossy.

Another example: Please refer to FIG. 8 , which is another cross-sectional view of FIG. 3 along the direction A-A. The difference between FIG. 8 and FIG. 5 is that: the paint layer 136 of the back cover 13d includes 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 second oxide layer 134b of 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 can increase the bonding force between the oxide layer and the paint layer, and the protection effect on the back cover is better.

In some embodiments, the third paint layer 1363 is thicker than the second paint layer 1362 , and the second paint layer 1362 is thicker than the first paint layer 1361 . Further, the thickness of the third paint layer 1363 is twice the thickness of the second paint layer 1362, and 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 2um.

In some embodiments, the thicknesses of the third paint layer 1363, the second paint layer 1362 and the first paint layer 1361 are successively reduced in equal thickness, for example, the thickness of the third paint layer 1363 is 9um, and the thickness of the second paint layer 1362 is 6um , the thickness of the first paint layer 1361 is 3um. The setting of the thicknesses of the third paint layer, the second paint layer and the first paint layer can provide better protection for the outer surface of the back cover, and make the adhesion between the three paint layers tighter.

In some embodiments, the paint layer can be provided transparently. It should be noted that when there are at least two paint layers, at least one of the paint layers can be set transparently. Furthermore, all paint layers are set to be transparent. The oxide layer of the back cover is the color of the outer surface of the back cover.

In some embodiments, the paint layer may be a colored paint layer. It should be noted that when there are at least two paint layers, at least one paint layer may be a colored paint layer, such as a silver powder paint layer.

In some embodiments, the first paint layer 1361 may be a primer layer, the second paint layer 1362 may be a silver powder paint layer, and the third paint layer 1363 may be a top paint layer. Wherein, the primer layer and the top coat layer can be provided transparently, so an oxidized surface can be formed in the first region 132a, and a silver powder high-gloss surface can be formed in the second region 132b. Wherein, the second area 132 b is covered with a primer layer 1361 , a silver powder paint layer 1362 and a top paint layer 1363 , and the silver powder paint layer 1362 is located between the primer layer 1361 and the top paint layer 1362 . The rear cover 13d further includes an oxide layer 134, the oxide layer 134 includes a first oxide layer 134a and a second oxide layer 134b, the first region 132a is covered with the first oxide layer 134a, and the second region 132b is covered with the second layer in turn. Dioxide layer 134b, primer layer 1361, silver powder paint layer 1362 and top paint layer 1363.

In order to increase the bonding force between the paint layer 136 and the oxide layer 134, in some embodiments, please refer to FIG. 9, which is another cross-sectional view of FIG. 3 along the direction A-A. The difference between FIG. 9 and FIG. 5 is 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, physical vapor deposition), and the bonding layer 135 may be a PVD coating. The bonding layer 135 is located between the oxide layer 134 and the paint layer 136 and can 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, a bonding layer may also be formed on the oxide layer in other ways, so as to increase the bonding force between the oxide layer and the paint layer.

Wherein, the bonding layer 135 includes a first bonding layer 135a and a second bonding layer 135b, the first bonding layer 135a is formed on the first oxide layer 134a, the second bonding layer 135b is formed on the second oxide layer 134b, the A paint layer 136 is formed on the second bonding layer 135b. In some embodiments, the paint layer 136 may be a silver powder paint layer, and an oxidized surface may be formed on the first region 132a, and a silver powder highlight surface may be formed on the second region 132b.

In some embodiments, please refer to FIG. 10. FIG. 10 is another cross-sectional view of FIG. 5 in the direction of A-A. The difference between FIG. 10 and FIG. The concave-convex structure 1371 can be formed by sandblasting with a sandblasting machine, so that the outer surface of the rear cover substrate 137 is clean and rough, thereby increasing the bonding force between the oxide layer 134 and the paint layer 136 formed on the concave-convex structure 1371 . Wherein, the first oxide layer 134 a and the second oxide layer 134 b of the oxide layer 134 are formed on the concave-convex structure 1371 , and the paint layer 136 is formed on the second oxide layer 134 b. The first oxide layer 134a formed on the concave-convex structure is located in the first area 132a of the outer surface 132 of the back cover 13f, which can make the local area of the outer surface of the back cover have a certain degree of cleanliness and different roughness. The paint layer 136 is located on the back cover. The outermost layer of the second area 132 of the outer surface can make the local area of the outer surface of the back cover bright, smooth and flat, and is not easy to stick fingerprints, and can keep the outer surface of the shell clean, and at the same time realize a part of the outer surface of the shell. Sandblasting surface, Part of the special effect of highlighting. In some embodiments, the paint layer 136 may be a silver powder paint layer, and an oxidized surface may be formed on the first region 132a, and a silver powder highlight surface may be formed on the second region 132b.

In some embodiments, please refer to FIG. 11 , which is another cross-sectional view of FIG. 3 along the direction A-A. The difference between FIG. 11 and FIG. 3 is that the paint layer 136 of the back cover 13g includes 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 second oxide layer 134b of 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 can increase the bonding force between the oxide layer and the paint layer, and the protection effect on the back cover is better. Wherein, the outer surface 132 of the rear cover substrate 137 of the rear cover 13g also forms a concave-convex structure 1371, and the concave-convex structure 1371 can be formed by sandblasting with a sandblasting machine, so that the outer surface of the rear cover substrate 137 is clean and rough, thereby increasing the formation The bonding force between the oxide layer 134 and the paint layer 136 on the concave-convex structure 1371.

In some embodiments, the paint layer may be provided transparently. It should be noted that when there are at least two paint layers, at least one of the paint layers can be set transparently. Furthermore, all paint layers are set to be transparent. The oxide layer of the back cover is the color of the outer surface of the back cover.

In some embodiments, the paint layer may be a colored paint layer. It should be noted that when there are at least two paint layers, at least one paint layer may be a colored paint layer, such as a silver powder paint layer.

In some embodiments, the first paint layer 1361 may be a primer layer, the second paint layer 1362 may be a silver powder paint layer, and the third paint layer 1363 may be a top paint layer. Wherein, the primer layer and the top coat layer can be provided transparently, then a sandblasted surface can be formed on the first region 132a, and a silver powder high-gloss surface can be formed on the second region 132b. Wherein, the second area 132 b is covered with a primer layer 1361 , a silver powder paint layer 1362 and a top paint layer 1363 , and the silver powder paint layer 1362 is located between the primer layer 1361 and the top paint layer 1362 . The rear cover 13d also includes an oxide layer 134 and a concave-convex structure 1371 formed by sandblasting. The oxide layer 134 includes a first oxide layer 134a and a second oxide layer 134b. The first region 132a is covered with the concave-convex structure 1371 and the second oxide layer. On the first oxide layer 134a, the second region 132b is covered with the concave-convex structure 1371, the second oxide layer 134b, the primer layer 1361, the silver powder paint layer 1362 and the top paint layer 1363 in sequence.

Please also refer to FIG. 12 , which is another perspective view of the rear cover provided in FIG. 3 . The back cover 13 may include an inner surface 131 and an outer surface 132 oppositely arranged. The inner surface 131 of the back cover 13 is close to the middle frame 12 and the cover plate 11 to form the inner surface of the casing 10. The outer surface 132 of the back cover 13 The outer surface 132 of the casing 10 is formed away from the middle frame 12 and the cover 11 . The back cover 13 can also include a crater 133, and the crater 133 can install a camera. Wherein, the outer surface 132 of the casing 10 further includes a first area 132a and a second area 132b. The first region 132a and the second region 132b may have the same color, and the first region 132a and the second region 132b may have different colors. Wherein, a highlight chamfer 139 is formed on the outer surface 132 of the rear cover 13 . The highlight chamfer 139 can be processed by CNC (Computer numerical control, computer numerical control machine tool) on the edge of the outer surface of the back cover to form a chamfer with a high gloss edge. The chamfer 139 may include an R angle or a C angle.

In some embodiments, please refer to FIG. 13 . FIG. 13 is another cross-sectional view along the direction A-A of FIG. 3 . The difference between FIG. 13 and FIG. 11 is that the outermost layer of the back cover 13h has an outer oxide layer 140 formed by secondary oxidation. The outer oxide layer 140 covers the entire outer surface of the rear cover, and the outer oxide layer 140 formed through secondary oxidation can make the highlight chamfers 139 of the rear cover 13 present different colors.

It should be noted that the structure of the back cover is not limited thereto, for example: the back cover may include two or more layers of oxide, two or more layers of paint. Another example: the back cover may include two or more layers of oxide, two or more layers of paint and a bonding layer. Another example: the back cover may include two or more layers of oxide, two or more layers of paint and a bonding layer. It should be noted that changes in the number of layers among the oxide layer, bonding layer, and paint layer are all within the protection scope of the embodiments of the present application, and will not be illustrated here one by one.

It should be noted that the structure of the housing in the embodiment of the present application is not limited thereto. For example, please refer to FIG. 14 , which is another schematic structural diagram of the housing provided in the embodiment of the present application. Wherein, the casing 10 a shown in FIG. 14 includes a cover plate 16 and a rear cover 17 . In some embodiments, the cover plate 16 is directly set on the rear cover 17, the cover plate 16 and the rear cover 17 are combined 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 screen 20, the printed circuit board 30, the battery 40 and other components. Compared with the housing 10 shown in FIG. 2, the housing 10a does not include a 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, it can also be Named as the middle frame structure). Specifically, please refer to FIG. 15 , which is another schematic structural diagram of the rear cover provided by the embodiment of the present application. In some embodiments, the rear cover 17 includes an inner surface 171 and an outer surface 172 , and the inner surface 171 and the outer surface 172 are oppositely disposed to form the entire surface of the rear cover 17 . The structure of each layer of the back cover 17 can refer to the back cover 13 , and will not be repeated here.

Wherein, the printed circuit board 30 is installed in the casing 10, the printed circuit board 30 can be the main board of the electronic device 1, and the printed circuit board 30 can be integrated with an antenna, a motor, a microphone, a camera, a light sensor, a receiver And functional components such as processors. In some embodiments, the printed circuit board 30 is fixed inside the housing 10 . Specifically, the printed circuit board 30 can be screwed to the middle frame 12 by screws, or can be snapped to the middle frame 12 by buckling. It should be noted that, the method of fixing the printed circuit board 30 to the middle frame 12 in the embodiment of the present application is not limited to this, and other methods can also be used, such as fixing together by buckles and screws.

Wherein, the battery 40 is installed in the housing 10 , and the battery 40 is electrically connected to the printed circuit board 30 to provide power to the electronic device 1 . The case 10 may serve as a battery cover for the battery 40 . The casing 10 covers the battery 40 to protect the battery 40 , specifically, the back cover 13 covers the battery 40 to protect the battery 40 , so as to reduce the damage of the battery 40 due to collision and drop of the electronic device 1 .

Wherein, the display screen 20 is installed in the casing 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 can be used for displaying the screen of the electronic device 1 or for the user to perform touch manipulation and the like. The top area of the non-display area 15 is provided with openings for sound and light transmission, and the bottom of the non-display area 15 can be provided with functional components such as fingerprint modules and touch buttons. Wherein the cover plate 11 is installed on the display screen 20 to cover the display screen 20 to form the same display area and non-display area as the display screen 20 , for details, please refer to the display area and non-display area of the display screen 20 .

It should be noted that, the structure of the display screen 20 is not limited thereto. For example, the display screen may be a full screen or a heterosexual screen. For details, please refer to FIG. 16 , which is another schematic structural diagram of an electronic device provided by an embodiment of the present application. The difference between the electronic equipment in FIG. 16 and the electronic equipment in FIG. 1 is 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 set as a transparent structure so that light signals pass through , or directly set up structures such as openings or gaps for light transmission in the non-display area of the display screen 20a, the front camera, photoelectric sensor, etc. can be arranged in the non-display area, so that the front camera can take pictures and the photoelectric sensor . The display area 14a covers the entire surface of the electronic device 1a. It should be noted that, for components such as the housing 10 , the printed circuit board 30 and the battery 40 in the electronic device 1 a , reference can be made to the above content, and details will not be repeated here.

In order to further describe the shell structure of the embodiment of the present application, the method for making the shell is taken as an example to describe in detail below. It should be noted that the manufacturing method of the housing may specifically include a manufacturing method of the back cover and a manufacturing method of the middle frame. The manufacturing method of the housing is described below as an example of the manufacturing method of the rear cover. It can be understood that the manufacturing method of the housing in the embodiment of the present application is not limited to the rear cover.

Please also refer to FIG. 17 . FIG. 17 is a schematic flow chart of the manufacturing method of the back cover provided by the embodiment of the present application. The manufacturing method of the back cover includes the following steps:

In step 101, a rear cover is provided. The back cover can be made of metal material, such as aluminum material, further, such as aluminum alloy. It should be noted that the back cover can be purchased directly, or can be obtained by processing the plate, such as forging and aging the aluminum alloy plate. Wherein, the rear cover may be a substrate material.

Wherein, the back cover may include an inner surface and an outer surface oppositely arranged, and the back cover and the inner surface and the outer surface may refer to the above content, which will not be repeated here.

In step 102, the outer surface of the rear cover is polished. Make the outer surface of the back cover flat.

Wherein, the outer surface of the back cover can be polished by mechanical, chemical, electrochemical or ultrasonic methods. In order to reduce the surface roughness of the back cover to obtain a bright and smooth outer surface of the back cover. Among them, the chemical polishing method is to regularly dissolve the outer surface of the back cover to achieve smoothness. Among them, the electrochemical polishing method is to use the outer surface of the back cover as the anode and the insoluble metal as the cathode. The two electrodes are immersed in the electrolytic cell at the same time, and a direct current is passed to generate a selective anode solution, thereby increasing the brightness of the outer surface of the back cover. The way of mechanical polishing is to cut the outer surface of the back cover, so that the outer surface of the back cover is plastically deformed to remove the polished convex part to obtain a smooth surface. Among them, the ultrasonic polishing method is to put the back cover into the abrasive suspension and place them together in the ultrasonic field, and rely on the oscillation of the ultrasonic wave to make the abrasive grind and polish the surface of the workpiece.

In some embodiments, before polishing the outer surface of the back cover, the outer surface of the back cover can be polished first, and then the polished outer surface of the back cover can be polished to make the polishing effect better , making the outer surface of the rear cover more smooth. Here, it should be noted that the grinding treatment can be understood as rough machining before the polishing treatment. That is, the outer surface of the back cover may be firstly subjected to a rough grinding, and then a fine grinding to complete the polishing treatment.

In step 103, sandblasting is performed on the polished outer surface of the back cover.

In some embodiments, sandblasting may be performed on the polished outer surface of the back cover to form a concave-convex structure. Make the outer surface of the back cover clean and rough.

In step 104, oxidation treatment is performed on the polished outer surface of the back cover.

Wherein, monochromatic oxidation treatment may be performed on the outer surface of the rear cover after sandblasting to form an oxide layer, or an oxide film. After oxidation treatment, each oxidation can be colored to form the desired appearance color. At least one oxide layer can be formed on the concave-convex structure obtained after sandblasting, and the concave-convex structure can increase the bonding force between the oxide layer and the ink layer, and has a better protection effect on the outer surface of the back cover.

It should be noted that, in some embodiments, two or more oxidation treatments may be performed on the outer surface of the rear cover after sandblasting to form at least two oxide layers, thereby forming a desired appearance color. For example: the outer surface of the rear cover after sand blasting can be oxidized twice to form two layers of oxide layers, and then colored after the oxidation to form the desired appearance color. Specifically, please refer to FIG. 18 , which is a schematic flowchart of the oxidation treatment of the rear cover according to the embodiment of the present application. The two oxidation treatments specifically include:

In step 1041, the first oxidation treatment is performed on the outer surface of the rear cover after sandblasting to form a first oxidation layer. After the first oxidation treatment, coloring treatment can also be performed to form the appearance color of the outer surface of the back cover, such as black and white.

In step 1042, mechanical processing is performed on the outer surface of the back cover after the first oxidation treatment. Specifically, CNC (Computer numerical control, computer numerical control machine tool) can be used to process a high-gloss edge of equal width on the edge of the outer surface of the back cover.

In step 1043, a second oxidation treatment is performed on the outer surface of the rear cover after machining to form a secondary oxide layer. Specifically, a second oxidation treatment can be performed on the high-gloss side to form a sub-layer oxide layer on the high-gloss side, which can protect the outer surface of the back cover. It is also possible to carry out coloring treatment after the second oxidation treatment to form the desired color, such as black, blue, etc., at the position of the high-gloss edge. In some embodiments, the colors of the first oxide layer and the second oxide layer may be the same or different.

The double oxidation treatment not only has a better protection effect on the outer surface of the back cover, but also has a better bonding force between the secondary oxide layer formed after the two oxidations and the paint layer. It should be noted that, in some embodiments, the polished outer surface of the rear cover may also be oxidized three times or more.

In step 105, a masking layer is sprayed on a partial surface of the outer surface of the oxidized rear cover to form a masking area and a non-masking area.

Wherein, the shielding layer may be an ink layer. An ink layer is sprayed on a partial surface of the outer surface of the oxidized back cover to form a shielding area, wherein a non-shielding area is formed on a partial surface where the ink layer is not sprayed.

For example, as shown in FIG. 19 , FIG. 19 is a schematic diagram of the masking process provided by the embodiment of the present application. A back cover 137 is provided, and the outer surface 132 of the back cover 137 is polished so that the roughness of the outer surface 132 of the back cover 137 is reduced to obtain a bright, flat surface of the back cover outer surface; The outer surface 132 of the rear cover 137 is subjected to sandblasting to form a concave-convex structure 1371; the outer surface 132 of the rear cover 137 after the sandblasting is subjected to oxidation treatment, that is, a layer is formed on the concave-convex structure 1371 obtained after the sandblasting Oxide layer 134; spray a shielding layer on the partial surface of the outer surface 132 of the back cover 137 after oxidation treatment to form a shielding area, that is, on the first oxide layer 134a formed on the first region 132a of the outer surface 132 of the back cover 137 The masking layer 138 is sprayed to form a masking area in the first area 132a, and correspondingly, a masking area is formed in the second area 132b where no masking layer is sprayed.

In step 106, spray paint on the entire outer surface of the back cover after spraying the masking layer on the partial surface to form a paint layer covering the masked area and the non-masked area, wherein the paint layer includes a silver powder paint layer. The paint layer is formed on the oxide layer. The paint layer is located on the outermost layer of the outer surface of the back cover, and its surface is smooth and flat, which is not easy to stick fingerprints, and can keep the outer surface of the back cover clean and smooth.

For example, as shown in FIG. 20 , FIG. 20 is a schematic diagram of the painting process provided by the embodiment of the present application. A back cover 137 is provided, and the outer surface 132 of the back cover 137 is polished so that the roughness of the outer surface 132 of the back cover 137 is reduced to obtain a bright, flat surface of the back cover outer surface; The outer surface 132 of the rear cover 137 is subjected to sandblasting to form a concave-convex structure 1371; the outer surface 132 of the rear cover 137 after the sandblasting is subjected to oxidation treatment, that is, a layer is formed on the concave-convex structure 1371 obtained after the sandblasting Oxide layer 134; spray a shielding layer on the partial surface of the outer surface 132 of the back cover 137 after oxidation treatment to form a shielding area, that is, on the first oxide layer 134a formed on the first region 132a of the outer surface 132 of the back cover 137 The masking layer 138 is sprayed to form a masking area in the first area 132a. After the masking layer is sprayed on the partial surface including the masking area 132 a and the non-masking area 132 b , the entire outer surface of the rear cover is sprayed to form a paint layer 136 . That is, a part of the ink layer 136 is formed on the unshielded portion of the oxide layer 134b, and another portion of the ink layer 136 is formed on the shielded portion of the oxide layer 134a. Wherein, the paint layer 136 may be a silver powder paint layer.

It should be noted that the oxide layer may include only one oxide layer, or may include two oxide layers; that is, at least three paint layers may be directly formed on one oxide layer, or may be formed on two oxide layers.

It should also be noted that, in some embodiments, one paint spraying treatment may be performed on the oxide layer after masking treatment to form a paint layer, or two paint spraying treatments may be performed on the oxide layer after masking treatment to form Two coats of paint.

In some embodiments, during the process of painting the outer surface of the back cover after masking treatment, the outer surface of the back cover can be baked, and high temperature baking can be used to dry the paint sprayed on the outer surface of the back cover to form layers of paint. For example, the baking temperature is 80 degrees and the baking time is 1 hour to bake the outer surface of the back cover. The following takes three painting treatments as an example for illustration, please refer to FIG. 21 , which is a schematic flowchart of the painting treatment provided by the embodiment of the present application. The process of painting treatment includes:

In step 1061, the first painting treatment is performed on the entire outer surface of the back cover after the masking layer is sprayed on the partial surface. After the masking treatment, the outer surface of the back cover that exposes the masking layer and part of the oxidized layer is sprayed for the first time, and the transparent paint is sprayed.

In step 1062, the first baking treatment is performed on the outer surface of the back cover after the first painting treatment, and a first paint layer is formed on the outer surface of the back cover, wherein the first paint layer covers the masked area and the outer surface of the back cover. Primer coat on non-masked areas. The first painting treatment and baking treatment can increase the bonding force between the oxide layer and the first painting.

In step 1063, a second painting treatment is performed on the outer surface of the back cover after the first baking treatment. Carry out the second painting treatment on the outer surface of the back cover after the first baking treatment, and spray transparent paint.

In step 1064, a second baking treatment is performed on the outer surface of the back cover after the second painting treatment, and a second paint layer is formed on the outer surface of the back cover, wherein the second paint layer is formed on the primer The silver powder paint layer, the second paint layer is formed on the first paint layer.

In step 1065, a third painting treatment is performed on the outer surface of the back cover after the second baking treatment. Carry out the third painting treatment on the outer surface of the back cover after the second baking treatment, and spray transparent paint.

In step 1066, a third baking treatment is carried out on the outer surface of the back cover after the third painting treatment, and a third paint layer is formed on the outer surface of the back cover, wherein the third paint layer is on the silver powder paint layer The topcoat layer is formed, and the third paint layer is formed on the second paint layer.

For example, as shown in FIG. 22 , FIG. 21 is another schematic diagram of the painting process provided by the embodiment of the present application. A back cover 137 is provided, and the outer surface 132 of the back cover 137 is polished so that the roughness of the outer surface 132 of the back cover 137 is reduced to obtain a bright, flat surface of the back cover outer surface; The outer surface 132 of the rear cover 137 is subjected to sandblasting to form a concave-convex structure 1371; the outer surface 132 of the rear cover 137 after the sandblasting is subjected to oxidation treatment, that is, a layer is formed on the concave-convex structure 1371 obtained after the sandblasting Oxide layer 134; spray a shielding layer on the partial surface of the outer surface 132 of the back cover 137 after oxidation treatment to form a shielding area, that is, on the first oxide layer 134a formed on the first region 132a of the outer surface 132 of the back cover 137 The masking layer 138 is sprayed to form a masking area in the first area 132a. After the masking layer is sprayed on the partial surface including the masking area 132 a and the non-masking area 132 b , the entire outer surface of the rear cover is sprayed to form a paint layer 136 . The paint layer 136 includes a first paint layer 1361 , a second paint layer 1362 and a third paint layer 1363 .

In some embodiments, the first paint layer 1361 may be a primer layer, the second paint layer 1362 may be a silver powder paint layer, and the third paint layer 1363 may be a top paint layer.

In step 107, the shielding layer is removed, so that the outer surface of the back cover presents a sandblasted surface in the shielded area and a silver powder highlighted surface in the non-shielded area.

Wherein, after baking to form the ink layer, the masking layer can be removed, so that the oxide layer originally covered by the masking layer is exposed, so that the outer surface of the rear cover forms a surface structure with a part of the sandblasting oxide layer and a part of the paint layer. Wherein, a part of the sandblasting oxide layer is exposed in the shielded area of the outer surface of the shell, which can make the local area of the outer surface of the shell have a certain degree of cleanliness and different roughness, and the paint layer is located at the outermost of the non-shielded area of the outer surface of the shell. layer, which can make the local area of the outer surface of the shell bright, smooth and flat, and not easy to stick fingerprints, and can keep the outer surface of the shell clean, and at the same time realize the special effect of a part of the outer surface of the shell being sandblasted and a part of the high-gloss surface. For example, when the paint layer includes a silver powder paint layer, the outer surface of the back cover presents a special effect of a part of the sandblasting surface and a part of the silver powder highlighting surface. The specific molding structure of the back cover can refer to any structure in FIG. 2 to FIG. 11 .

In some embodiments, a highlight chamfer may be formed on the outer surface of the rear cover.

Wherein, the highlight chamfering can be processed by CNC (Computer numerical control, computer numerical control machine tool) on the edge of the outer surface of the rear cover to form a chamfer with a high gloss edge. The chamfer 139 may include an R angle or a C angle. The structure of the back cover can be referred to in FIG. 12 .

In some embodiments, it also includes performing secondary oxidation on the highlight chamfer to make it appear in different colors.

In some embodiments, physical vapor deposition may be performed on the outer surface of the oxidized back cover to form a bonding layer, and the bonding layer is formed on at least one oxide layer. Then spray paint at least three times on the bonding layer to form at least three paint layers on the bonding layer. The combination layer can increase the binding force between the oxide layer and the paint layer, and has a better protection effect on the outer surface of the back cover.

In summary, the back cover manufacturing method provided in the embodiment of the present application can sequentially form at least one oxide layer, one or two or more paint layers on the outer surface of the back cover, and the paint layer is formed on the outer surface of the back cover without shielding. The outermost layer of the area has a bright and transparent surface, making the surface smooth and flat, not easy to stick fingerprints, and can keep the outer surface of the back cover clean. Wherein, the oxide layer is formed on the sandblasted concave-convex structure to form a sandblasted oxide layer. The concave-convex structure can increase the bonding force between the paint layer and the oxide layer, and increase the protection for the outer surface of the back cover. A part of the sandblasting oxide layer is exposed on the shielded area of the outer surface of the shell to form a sandblasted surface, which can make the local area of the outer surface of the shell have a certain degree of cleanliness and different roughness, and the paint layer is located on the non-shielding area of the outer surface of the shell The outermost layer of the area is used to form a paint surface, which can make the local area of the outer surface of the shell bright, smooth and flat, and is not easy to stick fingerprints, and can keep the outer surface of the shell clean. At the same time, a part of the outer surface of the shell is sandblasted and a part is highlighted face special effects. Wherein, when the paint layer includes a silver powder paint layer, the special effect of a part of the outer surface of the shell being sandblasted and a part of the silver powder highlighting surface can be realized.

Those skilled in the art can understand that the structure of the electronic device 1 shown in FIG. 1 does not constitute a limitation to the electronic device 1 . The electronic device 1 may include more or fewer components than shown, or combine certain components, or have a different arrangement of components. The electronic device 1 may also include a memory, a Bluetooth module, etc., which will not be repeated here.

The method for making the shell provided by the embodiment of the present application, the shell and the electronic device have been introduced in detail above. In this paper, specific examples are used to illustrate the principle and implementation of the present application. The description of the above embodiment is only for helping understanding this application. At the same time, for those skilled in the art, based on the idea of this application, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be construed as limiting the application.

Claims (17)

1. a kind of method for producing shell, the housing is applied in electronic equipment, it is characterised in that the method for producing shell bag Include：

One substrate is provided；

The outer surface of the substrate is processed by shot blasting；

Blasting treatment is carried out to the outer surface of substrate after the polishing；

Oxidation processes are carried out to the outer surface of substrate after the blasting treatment；

The local surfaces spraying shielding layer of outer surface of substrate after the oxidation processes, to form shaded areas and non-obstructing area Domain；

Spray painting processing is carried out to the whole outer surface of substrate after the local surfaces spraying shielding layer, the masking is covered to be formed Region and the skin of paint in non-obstructing region, wherein, the skin of paint includes silver powder skin of paint；

The shielding layer is removed, so that the silver powder that the sandblasting face and non-obstructing region of shaded areas is presented in the outer surface of substrate is high Bright face.

2. method for producing shell according to claim 1, it is characterised in that the shielding layer is removed described, so that institute After the highlighted face of silver powder for stating shaded areas is presented in outer surface of substrate sandblasting face and non-obstructing region, in addition to：

Highlighted chamfering is formed in the outer surface of substrate.

3. method for producing shell according to claim 2, it is characterised in that also include secondary to the highlighted chamfering progress Aoxidize so that different colors is presented in it.

4. the method for producing shell according to Claims 2 or 3, it is characterised in that the chamfering includes R angles or C angles.

5. method for producing shell according to claim 1, it is characterised in that after the local surfaces spraying shielding layer Whole outer surface of substrate carries out spray painting processing, to form the skin of paint for covering the shaded areas and non-obstructing region, wherein, institute Stating skin of paint includes silver powder skin of paint, including：

At least spray painting processing three times is carried out to the whole outer surface of substrate after the local surfaces spraying shielding layer, in the substrate Outer surface forms at least three layers of skin of paint, wherein, at least three layers of skin of paint include one layer of silver powder skin of paint.

6. method for producing shell according to claim 5, it is characterised in that after the local surfaces spraying shielding layer Whole outer surface of substrate carries out at least spray painting processing three times, and at least three layers of skin of paint, wherein institute are formed in the outer surface of substrate Stating at least three layers of skin of paint includes one layer of silver powder skin of paint, including：

First time spray painting processing is carried out to the whole outer surface of substrate after the local surfaces spraying shielding layer；

Outer surface of substrate after handling the first time spray painting carries out first time baking processing, is formed in the outer surface of substrate First skin of paint, wherein first skin of paint is the covering shaded areas and the prime coat in non-obstructing region；

Outer surface of substrate after handling the first time baking carries out second of spray painting processing；

Outer surface of substrate after handling second of spray painting carries out second of baking processing, is formed in the outer surface of substrate Second skin of paint, wherein second skin of paint is the silver powder skin of paint formed on the priming paint；

Outer surface of substrate after handling second of baking carries out third time spray painting processing；

Outer surface of substrate after handling the third time spray painting carries out third time baking processing, is formed in the outer surface of substrate 3rd skin of paint, wherein the 3rd skin of paint is the top coat layer formed on the silver powder skin of paint.

7. method for producing shell according to claim 1, it is characterised in that the shielding layer is ink layer.

8. method for producing shell according to claim 1, it is characterised in that the outer surface to the substrate is thrown Before the step of light processing, the method for producing shell also includes：

Grinding process is carried out to the outer surface of the substrate；

The step of outer surface to the substrate is processed by shot blasting specifically includes：

Outer surface of substrate after the grinding process is processed by shot blasting.

9. method for producing shell according to claim 1, it is characterised in that outside the substrate to after the polishing Surface carries out blasting treatment, including

Blasting treatment is carried out to the outer surface of substrate after the polishing, being formed in the outer surface of substrate has concaveconvex structure Sandblasting face.

10. method for producing shell according to claim 1, it is characterised in that the substrate after the oxidation processes The local surfaces of outer surface form shielding layer, with before forming shaded areas and non-obstructing region, in addition to：

Outer surface of substrate after the oxidising treat-ment carries out physical vapour deposition (PVD) process, is combined with being formed in the outer surface of substrate Layer；

The local surfaces of the outer surface of substrate after the oxidation processes form shielding layer, to form shaded areas and non-screening Region is covered, including：

The local surfaces spraying shielding layer of outer surface of substrate after the physical vapour deposition (PVD) process, with formed shaded areas and Non-obstructing region.

11. a kind of housing, applied in electronic equipment, it is characterised in that the housing is used as any in claim 1 to 10 The item method for producing shell is formed.

12. a kind of housing, applied in electronic equipment, it is characterised in that the housing includes the inner surface that is oppositely arranged and outer Surface, the outer surface of the housing include first area and second area, wherein, the first area is formed with sandblasting face, institute State second area and highlight face formed with silver powder.

13. housing according to claim 12, it is characterised in that covered with prime coat, silver powder oil on the second area Enamelled coating and top coat layer, and the silver powder skin of paint is between the prime coat and top coat layer.

14. housing according to claim 13, it is characterised in that the housing also includes oxide layer, the oxide layer bag Include the first oxide layer and the second oxide layer, covered with the first oxide layer on the first area, covered successively on the second area It is stamped the second oxide layer, prime coat, silver powder skin of paint and top coat layer.

15. housing according to claim 14, it is characterised in that the housing also includes concaveconvex structure, the concavo-convex knot It is configured to be formed on the concaveconvex structure with second oxide layer in the housing outer surface, first oxide layer.

16. according to the housing described in any one of claim 12 to 15, it is characterised in that the housing also includes binder course, institute Stating binder course includes the first binder course and the second binder course, and first binder course is formed in first oxide layer, described Second binder course is formed in second oxide layer, and the prime coat is formed on second binder course.

17. a kind of electronic equipment, it is characterised in that including housing, the housing is as described in any one of claim 11 to 16 Housing.