Shell and electronic equipment

Abstract

The embodiment of the invention provides a shell and electronic equipment, the shell comprises a metal plate, a middle layer and a first texture layer which are stacked, and the middle layer is located between the metal plate and the first texture layer; and the middle layer contains more than 80% by mass of acrylic resin. According to the shell provided by the embodiment of the invention, the shell has metal ice-cold hand feeling, colorful texture appearance on the outer surface and seamless delicacy, and the appearance richness and competitiveness of a product are improved.

Description

Housing and electronic equipment

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on February 7, 2023, with application number 202310145274.9 and application name “Casing and electronic device”, and claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on June 7, 2023, with application number 202310674065.3 and application name “Casing and electronic device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of terminal technology, and in particular to a housing and an electronic device. Background Art

[0003] Electronic devices such as tablets and laptops have become inseparable from our lives and can be found everywhere, greatly improving people's living standards. With the rapid development of communication equipment technology, users have higher requirements for the appearance of electronic devices.

[0004] Currently, tablet computers often use metal casings, often using anodized finishes. This results in significant homogeneity and limited aesthetics. Others utilize fiberglass, composite panels, or PU leather. While these achieve a premium look, they lose the inherent cool feel of metal and introduce gaps, reducing refinement.

[0005] Summary of the Invention

[0006] The present application provides a housing and an electronic device, which realizes that the housing has a cool metallic feel, a colorful textured appearance on the outer surface, and seamless refinement, thereby improving the richness and competitiveness of the product appearance.

[0007] In a first aspect, the present application provides a shell, comprising a stacked metal plate, an intermediate layer and a first texture layer, wherein the intermediate layer is located between the metal plate and the first texture layer; the intermediate layer contains more than 80% by mass of acrylic resin.

[0008] The shell provided by the present application is obtained by arranging an intermediate layer on one side of a metal plate and arranging a first texture layer on the intermediate layer, wherein the intermediate layer is prepared by applying paint on one surface of the metal plate and thermally curing, wherein the paint component includes acrylic resin, that is, the component of the intermediate layer includes acrylic resin, and the intermediate layer serves as a primer layer on one side of the metal plate, and the intermediate layer is used to improve the adhesion between the texture layer and the metal surface and to mask the original color of the metal surface of the metal plate. Through the above-mentioned stacked metal plates, intermediate layers and first texture layers, the shell has a metallic cool feel, and the outer surface of the shell has a colorful texture appearance, which enhances the richness and competitiveness of the product appearance. Secondly, the stacked arrangement of the metal plates, intermediate layers and first texture layers achieves seamless refinement. Therefore, the shell provided by the embodiment of the present application solves the problem that the shell in the related art cannot have both a metallic cool feel, a colorful texture appearance on the outer surface and seamless refinement.

[0009] In a possible embodiment, the acrylic resin is obtained by reacting 60%-90% by mass of a modified acrylic resin and 10%-40% by mass of a polyester acrylic resin, and the modified acrylate includes silane-modified acrylate and / or hydroxypropyl-modified acrylate.

[0010] In a possible implementation, the intermediate layer further includes additives, and the additives include colorants and fillers.

[0011] In a possible embodiment, the intermediate layer is formed by coating a mixture of 60% to 90% by mass of modified acrylic resin, 10% to 40% by mass of polyester acrylic resin, a curing agent, and the additive on the metal plate and thermally curing the mixture.

[0012] In a possible implementation manner, the method further includes: a first coating layer, wherein the first coating layer is located on a side of the first texture layer facing away from the intermediate layer.

[0013] In a possible embodiment, the invention further includes: a hardening layer and a first bonding layer, wherein the first bonding layer is located between the first coating layer and the hardening layer;

[0014] The first bonding layer is used to connect the first coating layer and the hardening layer.

[0015] In a possible implementation, the method further includes: a second texture layer, wherein the second texture layer is located between the first bonding layer and the hardening layer.

[0016] In a possible implementation manner, the method further includes: a second coating layer, wherein the second coating layer is located between the second texture layer and the hardening layer.

[0017] In a possible implementation manner, the method further includes: a second bonding layer, wherein the second bonding layer is located between the second coating layer and the hardening layer.

[0018] In a possible implementation, the first texture layer and the second texture layer both include a UV adhesive layer and a film with a texture structure, and the UV adhesive layer is made of glue mainly composed of polyurethane acrylic resin.

[0019] In a possible implementation, the hardened layer includes at least one of a textured UV texture layer and a non-textured hard film layer, and the hardness of the hardened layer is greater than that of the first texture layer.

[0020] In a possible embodiment, the first bonding layer and the second bonding layer are adhesive layers formed of any one of polyurethane, polyester, and epoxy resin.

[0021] In a possible implementation manner, the thickness of the intermediate layer is 10-35 μm.

[0022] In a possible implementation manner, the thickness of the second texture layer and the first texture layer is 10-25 μm.

[0023] In a possible implementation manner, the thickness of the hardened layer is 10-25 μm.

[0024] In a possible implementation manner, the thickness of the second coating layer and the first coating layer is 50-150 nm.

[0025] In a possible implementation manner, the thickness of the second bonding layer and the first bonding layer is 6-10 μm.

[0026] In a possible implementation manner, the first coating layer and the second coating layer include one or more of SiO, ZrO2, Ti3O5 and SiO2.

[0027] In a possible implementation manner, an outer edge of the housing has a chamfered surface.

[0028] In a possible implementation, the chamfered plane extends simultaneously on the metal plate, the intermediate layer, and the first texture layer.

[0029] In a possible implementation manner, the corresponding width of the chamfered plane in the metal layer is greater than or equal to 0.5 mm and less than or equal to 3 mm.

[0030] In a second aspect, the present application provides an electronic device, comprising: any of the above-mentioned housings.

[0031] In a possible implementation, the electronic device includes a display screen and a middle frame, the middle frame is disposed between the display screen and the housing, and a side of the metal plate of the housing facing away from the metal plate faces the middle frame.

[0032] In a possible implementation, the electronic device is a tablet computer. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] FIG1 is a schematic diagram of the overall structure of an electronic device provided in an embodiment of the present application;

[0034] FIG2 is another schematic diagram of the overall structure of an electronic device provided in an embodiment of the present application;

[0035] FIG3 is a schematic diagram of the disassembled structure of an electronic device provided in an embodiment of the present application;

[0036] FIG4A is a schematic diagram of a disassembled structure of a housing;

[0037] FIG4B is a schematic diagram of the disassembled structure of the housing provided in an embodiment of the present application;

[0038] FIG5 is another schematic diagram of the disassembled structure of the housing provided in an embodiment of the present application;

[0039] FIG6 is another schematic diagram of the disassembled structure of the housing provided in an embodiment of the present application;

[0040] FIG7 is a schematic diagram of a partial structure of a housing provided in an embodiment of the present application.

[0041] Explanation of the accompanying drawings: 100-electronic device; 100a-laptop computer; 100b-tablet computer; 110-back cover; 110a-housing; 111-metal plate; 112-middle layer; 113-first texture layer; 114-first coating layer; 115-first bonding layer; 116-hardening layer; 117-second texture layer; 118-second coating layer; 119-second bonding layer; 120-display screen; 130-middle frame; 140-housing; 150-first housing; 160-second housing; 161-keyboard; 170-chamfered plane; 180-laminated structure. DETAILED DESCRIPTION

[0042] The terms used in the implementation section of this application are only used to explain the specific embodiments of this application and are not intended to limit this application. The implementation of the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0043] Unless the context requires otherwise, throughout the specification and claims, the term "comprise" and its other forms, such as the third person singular form "comprises" and the present participle form "comprising", are to be interpreted as open and inclusive, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example" or "some examples" are intended to indicate that the particular features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the particular features, structures, materials or characteristics may be included in any one or more embodiments or examples in any appropriate manner.

[0044] In addition, in the embodiments of the present application, directional terms such as "front" and "rear" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they can change accordingly according to changes in the orientation of the components in the drawings.

[0045] In the embodiments of the present application, "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0046] An embodiment of the present application provides an electronic device. It is understandable that the electronic device can be a mobile terminal device such as a tablet computer, a mobile phone, a laptop computer, a personal digital assistant (PDA), a smart wearable device, a point of sales (POS) terminal, etc., or the electronic device can also be a fixed terminal device such as a smart TV, a router, a server, a switch, etc., and this embodiment does not limit this.

[0047] In some examples, referring to FIG1 , the electronic device 100 in the embodiments of the present application can be described using a laptop computer 100a as an example. Referring to FIG1 , the electronic device 100 can include: a display screen 120, a first housing 150, and a second housing 160. The display screen 120 is connected to the first housing 150, and the first housing 150 and the second housing 160 are rotatably connected to each other. The second housing 160 is provided with a keyboard 161. The display screen 120 can be electrically connected to a circuit board disposed in the second housing 160 via a flexible circuit board or a conductive element (not shown). Components such as a battery can also be disposed in the second housing 160. The first housing 150 and the second housing 160 can both be metal housings.

[0048] In other examples, referring to FIG2 , the electronic device 100 in the embodiment of the present application can be illustrated by taking a tablet computer 100b as an example. As shown in FIG2 , the electronic device 100 may include a display screen 120 and a housing 140 , wherein the display screen 120 is connected to the housing 140 and encloses an internal accommodating cavity, and components such as a circuit board and a battery can be arranged in the accommodating cavity.

[0049] In the embodiment of the present application, the display screen 120 may be an organic light-emitting diode (OLED) display screen 120 or a liquid crystal display (LCD) display screen 120. It should be understood that the display screen 120 may be a touch screen. Furthermore, the display screen 120 may include a display and a touch control device, wherein the display is used to output display content to the user, and the touch control device is used to receive touch events input by the user on the display screen 120.

[0050] FIG3 shows the disassembled structure of the electronic device 100 ( 100b ). Referring to FIG3 , the housing 140 may include a middle frame 130 and a rear housing 110 . The middle frame 130 may be disposed between the display screen 120 and the rear housing 110 . The battery may be disposed on the side of the middle frame 130 facing the rear housing 110 (as shown in FIG2 ). The rear housing 110 may be disposed between the middle frame 130 and the rear housing 110 , and the rear housing 110 and the middle frame 130 may be connected. It is understood that the connection between the rear housing 110 and the middle frame 130 forms a hollow interior space, and the battery may be installed in the interior space.

[0051] The middle frame 130 and the rear shell 110 may be metal parts.

[0052] It should be noted that, in some embodiments, the rear shell 110 of the electronic device 100 (eg, tablet computer 100 b ) may be connected to the middle frame 130 to form an integrally formed (unibody) shell 140 .

[0053] It should be understood that the structures illustrated in the embodiments of the present application do not constitute a specific limitation on the electronic device 100. In other embodiments of the present application, the electronic device 100 (e.g., tablet computer 100b) may include more or fewer components than shown, or may combine or separate certain components, or arrange the components differently. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

[0054] With the continuous development of electronic devices 100, the requirements for the appearance of the shell (such as the first shell 150, the second shell 160 or the back shell 110) of the electronic device 100 (such as a tablet computer 100b or a laptop computer 100a) are becoming higher and higher. In the related art, the shell of the electronic device 100 is mostly made of a metal, such as aluminum alloy, stainless steel or titanium alloy, or made of fiberglass board, composite board, or polyurethane skin. In recent years, with the emergence of high-gloss appearance effects of electronic device exterior parts and the development trend of exquisite appearance design, shells with higher strength, higher gloss effects and maintaining a metal feel have become a development hotspot. However, the shells of electronic devices are highly homogenized, and the richness of appearance effects is also relatively limited. It may not be possible to meet the problem of both achieving a high-end appearance of the electronic device shell and maintaining the cool feel of the metal shell itself.

[0055] FIG4A is a schematic structural diagram of a housing of an electronic device. Referring to FIG4A , in order to achieve the texture effect of the housing, the housing includes a metal plate 11 and a textured thin film diaphragm 14 provided on the metal plate 11. When setting, a textured thin film diaphragm 14 is often prepared in advance. The thin film diaphragm 14 can be formed by, for example, setting a texture layer 13 on a bearing layer 12. The bearing layer 12 can be a thin film layer. A groove 15 is provided on one side of the metal plate 11. The thin film diaphragm 14 is placed in the groove 15, and the thin film diaphragm 14 and the thin film diaphragm 14 are pressed and bonded together by a concave-convex mold. In this way, in terms of the manufacturing process, it is necessary to prepare the thin film diaphragm 14 in advance, and press the thin film diaphragm 14 and the metal plate 11 together by a concave-convex mold, which is a cumbersome process. In addition, when the thin film diaphragm 14 is provided in the groove 15 of the metal plate 11, there is often a fitting gap between the outer edge of the thin film diaphragm 14 and the groove wall of the groove 15, which reduces the refinement of the housing.

[0056] To address the above-mentioned issues, the present invention provides a housing, which can be a first housing 150, a second housing 160, an outer shell 140, or a rear shell 110. The housing provided in the present invention allows the electronic device housing to combine a metallic, cool feel with a colorful, textured exterior and seamless sophistication, effectively enhancing the product's appearance and competitiveness. The specific structure of the housing provided in the present invention is described below in conjunction with the accompanying drawings.

[0057] 4B , the housing 110 a provided in the embodiment of the present application is specifically a back cover 110 for illustration. As shown in FIG4B , the housing 110 a may include: a metal plate 111, an intermediate layer 112, and a first texture layer 113. The metal plate 111, the intermediate layer 112, and the first texture layer 113 may be stacked. In the embodiment of the present application, the intermediate layer 112 may be located between the metal plate 111 and the first texture layer 113.

[0058] The metal plate 111 may have a metal surface, and the intermediate layer 112 may be located on the metal surface of the metal plate 111. In one possible embodiment, the first texture layer 113 is connected to the metal surface of the metal plate 111 through the intermediate layer 112. The intermediate layer 112 may be a base layer (e.g., a primer layer) coated on the metal surface of the metal plate 111. It should be noted that the intermediate layer 112 is mainly composed of paint, and the main component of the paint may be a thermosetting resin material. It is understood that the main function of the intermediate layer 112 is to improve the adhesion between the first texture layer 113 and the metal surface of the metal plate 111. It should be noted that the adhesion can be determined by subjecting the shell 110a to a water boiling test, wherein the water boiling test may refer to a moisture and heat resistance test after coating. For example, if the intermediate layer 112 does not fall off after the shell 110a is boiled in water at 98° for two hours, it can be determined that the standard is met. In addition, in a possible embodiment, the color of the intermediate layer 112 may be black, so that the intermediate layer 112 can play a role in shielding the original color of the metal surface of the metal plate 111 .

[0059] Based on the above embodiment, the intermediate layer 112 can be a primer layer formed by coating a paint on the metal surface of the metal plate 111, and can be prepared through a thermal curing process. The paint can contain at least 80% by weight of an acrylic resin. For example, the intermediate layer 112 can contain at least 80% by weight of an acrylic resin.

[0060] The intermediate layer 112 can be produced by spraying paint onto the metal surface of the metal plate 111 and then baking and curing it onto the metal surface of the metal plate 111, thereby masking the original color of the metal plate 111 and serving as a base color. Depending on the desired effect of the tablet computer's back cover 110, the intermediate layer 112 can be produced by applying and baking multiple times, for example, two coats and two bakes, three coats and three bakes, four coats and four bakes, or five coats and five bakes.

[0061] In one possible embodiment, the acrylic resin can be obtained by reacting 60%-90% by mass of a modified acrylic resin and 10%-40% by mass of a polyester acrylic resin. For example, the acrylic resin can be obtained by reacting a modified acrylic resin and a polyester acrylic resin, and the ratio of the modified acrylic resin to the polyester acrylic resin can be (6-9): (1-4). For example, the ratio of the modified acrylic resin to the polyester acrylic resin can be 9:1 or 7:3. Among them, the modified acrylic ester includes silane-modified acrylate and / or hydroxypropyl-modified acrylate. Silane-modified acrylate is obtained by adding a silane modifier to the acrylic resin, and hydroxypropyl-modified acrylate is obtained by adding a hydroxypropyl resin modifier to the acrylic resin. In the embodiment of the present application, the modified acrylic resin is modified by adding a silane additive or a hydroxypropyl resin to the acrylic resin.

[0062] Based on the above embodiment, the intermediate layer 112 may further include additives, wherein the additives may include colorants and fillers.

[0063] Based on the above embodiment, the intermediate layer 112 is formed by mixing 60%-90% by weight of a modified acrylic resin, 10%-40% by weight of a polyester acrylic resin, a curing agent, and additives, which is then coated on the metal plate 111 and thermally cured. It should be noted that during the thermal curing process, the modified acrylic resin and polyester acrylic resin are dissolved in a solvent (diluent), the curing agent and additives are then added and mixed, and the entire mixture is then coated on the metal plate 111 and thermally cured. During the entire heating process, the monomers of the modified acrylic resin and polyester acrylic resin react with each other to form a macromolecular film.

[0064] It should be noted that the first texture layer 113 can achieve different texture colors and light and shadow effects. For example, the textures that can be formed include but are not limited to CD texture (an effect similar to the texture of a CD disc obtained by removing material from the metal surface using a precision CD texture machine), diamond texture, three-dimensional texture, etc.

[0065] Based on the above embodiment, the first texture layer 113 can be obtained by spraying UV glue with polyurethane acrylic resin as the main body onto the surface, then laminating a film with a textured structure, and then curing it with light to obtain a UV layer with a texture, thereby achieving different visual and tactile effects. Therefore, in the embodiment of the present application, the first texture layer 113 can include a UV glue layer and a film with a textured structure, wherein the UV glue layer is made of glue with polyurethane acrylic resin as the main body.

[0066] In one possible embodiment, the manufacturing process of the first texture layer 113 can be coated by spraying, silk-screening or curtain coating, and then covered with a textured film for rubbing, and then cured by light. Among them, the first texture layer 113 can be made by mixing a prepolymer, a solvent, a curing agent and an additive and then reacting. It should be noted that the first texture layer 113 is not a film layer formed by mixing and heat-curing a modified acrylic resin with a mass percentage of 60%-90%, a polyester acrylic resin with a mass percentage of 10%-40%, a solvent, a curing agent and an additive. It should be noted that the prepolymer in the first texture layer 113 can be selected from polyurethane acrylic resin, polyester acrylic resin and epoxy acrylic resin. In the embodiment of the present application, the prepolymer in the first texture layer 113 can be prepared from polyurethane acrylic resin, and the content of the prepolymer can be about 40-65%. In addition, additives need to be added with wear-resistant additives, AF additives, etc. to improve its wear resistance, hardness and anti-oil performance.

[0067] In the embodiment of the present application, the first texture layer 113 may be an outer texture layer to achieve a frosted feel, wherein the outermost texture layer in the film structure may be the outer texture layer.

[0068] Therefore, the shell 110a provided in the embodiment of the present application can set an intermediate layer 112 on one of the metal surfaces of the metal plate 111, and then set a first texture layer 113 with texture and color on the intermediate layer 112, so as to directly form a laminated appearance with texture and color on one of the metal surfaces of the metal plate 111, avoiding the preparation of a textured diaphragm in advance and simplifying the process.

[0069] In the embodiment of the present application, an intermediate layer 112 and a first textured layer 113 with textures and colors are printed on one of the metal surfaces of the metal plate 111 through a lamination process, achieving a seamless and refined effect between the metal plate 111, the intermediate layer 112, and the first textured layer 113. This avoids the problem in the related art of placing a pre-prepared thin film diaphragm 14 in the groove 15 of the metal plate 11, which results in a fit gap between the outer edge of the thin film diaphragm 14 and the groove wall of the groove 15, thereby reducing the refinement of the housing. Therefore, the housing 110a provided in the embodiment of the present application achieves seamless fit between the various layer structures on the outer surface of the housing 110a, improving the refinement of the housing 110a.

[0070] Therefore, the shell 110a provided in the embodiment of the present application has the effects of a cool metallic feel, a colorful textured appearance on the outer surface, and seamless sophistication, effectively improving the richness and competitiveness of the product appearance, and solving the problem that the metal shell in the existing tablet computer cannot have a cool metallic feel, a colorful textured appearance on the outer surface, and seamless sophistication.

[0071] To further achieve the effect of combining the cool metallic feel, the colorful textured appearance, and the seamless refinement of the tablet computer's rear shell 110, and to provide the tablet computer's rear shell 110 with a more colorful textured appearance, the present embodiment may further provide a housing 110a having a laminated surface structure. The specific structure of the housing 110a provided in the present embodiment is described below in conjunction with the accompanying drawings.

[0072] In one possible implementation, as shown in FIG5 , based on the above embodiment, the housing 110a may further include: a first coating layer 114, wherein the first coating layer 114 may be located on the side of the first texture layer 113 facing away from the intermediate layer 112. It should be noted that the first coating layer 114 may be produced using an optical physical vapor deposition (OPVD) process, wherein the primary function of the first coating layer 114 is to achieve metallic luster, color, and light and shadow effects. Specifically, the thickness of the first coating layer 114 is determined based on the desired appearance.

[0073] Based on the above embodiment, the first coating layer 114 can be manufactured by electron gun evaporation or magnetron sputtering to deposit a target material onto the surface of the first texture layer 113, thereby achieving a better gloss effect. In one possible embodiment, the first coating layer 114 can be a multi-layer oxide film structure. For example, in some examples, the first coating layer 114 can include one or more of SiO, ZrO2, Ti3O5, and SiO2. The film structure can be adjusted according to the ID effect.

[0074] Based on the above embodiment, the surface of the first coating layer 114 can have a metallic luster. In one possible embodiment, the first coating layer 114 can be primarily composed of a metal oxide, which is not limited in this embodiment of the present application. The first coating layer 114 has different colors due to its refractive index, and the first coating layer 114 is light-transmissive, thereby achieving a reflective effect.

[0075] Based on the above embodiment, since the first texture layer 113 has different texture colors and light and shadow effects, and the first coating layer 114 can have different colors due to its refractive index, it should be noted that the first coating layer 114 does not cover the color of the first texture layer 113. In addition, the first texture layer 113 and the first coating layer 114 can jointly achieve the desired color effect.

[0076] Continuing to refer to Figure 5, on the basis of the above embodiment, the shell 110a may further include: a hardening layer 116 and a first bonding layer 115, wherein the first bonding layer 115 may be located between the first coating layer 114 and the hardening layer 116. In one possible embodiment, the first bonding layer 115 may be used to connect the first coating layer 114 and the hardening layer 116. The main component of the first bonding layer 115 may be any one of polyurethane, polyester, and epoxy resin, and the first bonding layer 115 may be prepared by a thermal curing process. In the embodiment of the present application, the first bonding layer 115 may be prepared by epoxy resin. It can be understood that the main function of the first bonding layer 115 is to connect the first coating layer 114 and the hardening layer 116.

[0077] Based on the above embodiment, a first bonding layer 115 is provided between the first coating layer 114 and the hardening layer 116. The first bonding layer 115 may have a certain adhesive effect, allowing the first bonding layer 115 to support the first coating layer 114 and the hardening layer 116. In one possible embodiment, the first bonding layer 115 may be provided as a logo layer or as an ink layer. When the first bonding layer 115 is an ink layer, the first bonding layer 115 may contain a solvent, thereby allowing the first bonding layer 115 to form a chemical bond. Combined with the chemical action, the first bonding layer 115 can better adhere to and support the first coating layer 114 and the hardening layer 116.

[0078] The first bonding layer 115 can be manufactured by spraying or silk-screening, where ink is applied on the first coating layer 114 , and then baked and cured to obtain the first bonding layer 115 , which serves to connect the first coating layer 114 and the hardening layer 116 .

[0079] Based on the above embodiment, the hardening layer 116 may include at least one of a textured hardening layer and a non-textured hardcoat layer. The textured hardening layer in the hardening layer 116 may be a UV outer texture layer. In one possible embodiment, the hardening layer 116 may be primarily composed of glue, and the specific structure of the hardening layer 116 may be similar to that of the first texture layer 113. It should be noted that the hardness of the hardening layer 116 is greater than that of the first texture layer 113. In the embodiment of the present application, the hardening layer 116 may include a UV glue layer and a solvent, wherein the UV glue layer is made of glue primarily composed of polyurethane acrylic resin.

[0080] Based on the above embodiment, different hardening layers 116 can be selected based on the desired appearance. For example, if a frosted or tactile appearance is desired, a textured hardening layer 116 can be selected. If a glossy or matte appearance with a smooth feel is desired, a non-textured hardening layer 116 can be selected.

[0081] Therefore, based on the above embodiment, a laminated structure of a first texture layer 113 and a first coating layer 114 is adopted to further satisfy the color effect of the tablet computer back cover 110. The shell 110a provided in this embodiment of the application also combines the effects of a metallic cool feel, a colorful textured outer surface appearance, and seamless sophistication, effectively enhancing the product's appearance and competitiveness, and solving the problem that the metal back covers 110 in existing tablet computers cannot achieve the same combination of a metallic cool feel, a colorful textured outer surface appearance, and seamless sophistication.

[0082] To further achieve the effect of combining the cool metallic feel, the colorful textured appearance, and the seamless refinement of the tablet computer's rear shell 110, and to provide the tablet computer's rear shell 110 with a more colorful textured appearance, the present embodiment may further provide a housing 110a having a laminated surface structure. The specific structure of the housing 110a provided in the present embodiment is described below in conjunction with the accompanying drawings.

[0083] In one possible implementation, as shown in FIG6 , based on the above embodiment, the housing 110a may further include: a second texture layer 117, wherein the second texture layer 117 may be located between the first adhesive layer 115 and the hardening layer 116. It should be noted that the manufacturing process of the second texture layer 117 may be the same as that of the first texture layer 113. The second texture layer 117 may also be formed by spraying UV glue with a polyurethane acrylic resin as the main component onto the surface, then laminating a film with a textured structure, and then curing the surface with light to obtain a textured UV layer, thereby achieving different visual and tactile effects. Therefore, in the embodiment of the present application, the second texture layer 117 may also include a UV glue layer and a film with a textured structure, wherein the UV glue layer is made of glue with a polyurethane acrylic resin as the main component.

[0084] In one possible embodiment, the manufacturing process of the second texture layer 117 can be coated by spraying, silk-screening or pouring, and then covered with a textured film for rubbing, and then cured by light. The components of the second texture layer 117 may include prepolymers, solvents, curing agents and additives. It should be noted that the prepolymer can be selected from polyurethane acrylic resin, polyester acrylic resin and epoxy acrylic resin. In the embodiment of the present application, the prepolymer in the second texture layer 117 can be prepared from polyurethane acrylic resin, and the content of the prepolymer can be about 40-65%. In addition, additives need to be added with wear-resistant additives, AF additives, etc., in order to improve its wear resistance, hardness and anti-oil performance.

[0085] It should be noted that the second texture layer 117 has a different polyurethane acrylic resin system than the first texture layer 113. The second texture layer 117 can also achieve various textures, colors, and lighting effects. For example, the textures that can be formed include, but are not limited to, CD grain (a CD-like texture created by removing material from a metal surface using a precision CD grain machine), diamond grain, and three-dimensional grain.

[0086] In this embodiment of the present application, the first texture layer 113 can be an inner texture layer, creating light, shadow, and color effects, while the second texture layer 117 can be an outer texture layer, creating a frosted feel. The outermost texture layer in the film structure can be the outer texture layer, while the innermost texture layer can be the inner texture layer. The textures of the first texture layer 113 and the second texture layer 117 are different.

[0087] In one possible implementation, referring to FIG. 6 , based on the above embodiment, the housing 110a may further include a second coating layer 118, wherein the second coating layer 118 may be located between the second texture layer 117 and the hardening layer 116. It should be noted that the manufacturing process of the second coating layer 118 may be the same as that of the first coating layer 114, and the second coating layer 118 may also be manufactured by an optical physical vapor deposition (OPVD) process. The main function of the second coating layer 118 is also to achieve metallic gloss, color, and light and shadow effects. Specifically, the thickness of the second coating layer 118 is determined according to the desired appearance.

[0088] Based on the above embodiment, the second coating layer 118 can also be manufactured by electron gun evaporation or magnetron sputtering to deposit the target material onto the surface of the second texture layer 117, thereby achieving a better gloss effect. In one possible embodiment, the second coating layer 118 can be a multi-layer oxide film structure. For example, in some examples, the second coating layer 118 can include one or more of SiO, ZrO2, Ti3O5, and SiO2. The film structure can be adjusted according to the ID effect.

[0089] Based on the above embodiment, the surface of the second coating layer 118 can have a metallic luster. In one possible embodiment, the second coating layer 118 can also be primarily composed of a metal oxide, which is not limited in this embodiment of the present application. The second coating layer 118 has different colors due to its refractive index, and the second coating layer 118 is light-transmissive, thereby achieving a reflective effect.

[0090] On the basis of the above embodiment, since the second texture layer 117 has different texture colors and light and shadow effects, and the second coating layer 118 can have different colors through the refractive index, it should be noted that the second coating layer 118 will not cover the color of the second texture layer 117. In addition, the second texture layer 117 and the second coating layer 118 can jointly achieve the desired color effect. Continuing to refer to Figure 6, on the basis of the above embodiment, the shell 110a may further include: a second bonding layer 119, wherein the second bonding layer 119 can be located between the second coating layer 118 and the hardening layer 116. In one possible embodiment, the second bonding layer 119 can be used to connect the second coating layer 118 and the hardening layer 116. It should be noted that the composition of the second bonding layer 119 can be the same as the composition of the first bonding layer 115. Among them, the main component of the second bonding layer 119 can also be any one of polyurethane, polyester, and epoxy resin, and the second bonding layer 119 can be prepared by a thermal curing process. It can be understood that the main function of the second bonding layer 119 is to connect the second coating layer 118 and the hardening layer 116.

[0091] Based on the above embodiment, a second bonding layer 119 is provided between the second coating layer 118 and the hardening layer 116. The second bonding layer 119 may have a certain adhesive effect, so that the second bonding layer 119 can support the second coating layer 118 and the hardening layer 116. In one possible embodiment, the second bonding layer 119 can be provided as a logo layer or as an ink layer. When the second bonding layer 119 is an ink layer, the second bonding layer 119 may contain a solvent, thereby allowing the second bonding layer 119 to form a chemical bond. Combined with the chemical action, it can better adhere to and support the second coating layer 118 and the hardening layer 116.

[0092] Among them, the production process of the second bonding layer 119 can also adopt a spraying or silk screen method, applying ink on the second coating layer 118, and then baking and curing to obtain the second bonding layer 119, which plays the role of supporting the second coating layer 118 and the hardening layer 116.

[0093] Therefore, based on the above embodiment, a laminated structure with two texture layers and two coating layers is adopted to further meet the color effects of the tablet computer rear shell 110. The shell 110a provided in this embodiment of the application also combines the effects of a metallic cool feel, a colorful textured outer surface appearance, and seamless sophistication, effectively enhancing the product's appearance and competitiveness, and solving the problem that the metal shells of existing tablet computers cannot achieve the combined effects of a metallic cool feel, a colorful textured outer surface appearance, and seamless sophistication.

[0094] In one possible implementation, the thickness of the intermediate layer 112 is 10-35 μm. For example, the thickness of the intermediate layer 112 may be 11 μm or 34 μm.

[0095] In one possible embodiment, the thickness of the second texture layer 117 and the first texture layer 113 is 10-25 μm. The thickness of the second texture layer 117 and the first texture layer 113 can be the same or different. For example, the thickness of the second texture layer 117 and the first texture layer 113 can be 11 μm or 24 μm.

[0096] In a possible implementation, the thickness of the hardened layer 116 is 10-25 μm. The thickness of the hardened layer 116 can be 11 μm or 24 μm.

[0097] In one possible embodiment, the thickness of the second coating layer 118 and the first coating layer 114 is 50-150 nm. The thickness of the second coating layer 118 and the first coating layer 114 can be the same or different. For example, the thickness of the second coating layer 118 and the first coating layer 114 can be 60 nm or 140 nm. In one possible embodiment, when the thickness of the second coating layer 118 and the first coating layer 114 is required to be thicker, the thickness of the second coating layer 118 and the first coating layer 114 can be 300-500 nm. For example, the thickness of the second coating layer 118 and the first coating layer 114 can be 310 nm or 490 nm.

[0098] In one embodiment, the thickness of the second bonding layer 119 and the first bonding layer 115 is 6-10 μm. The thickness of the second bonding layer 119 and the first bonding layer 115 can be the same or different. For example, the thickness of the second bonding layer 119 and the first bonding layer 115 can be 7 μm or 9 μm.

[0099] The first coating layer 114 and the second coating layer 118 may include one or more of SiO, ZrO 2 , Ti 3 O 5 and SiO 2 .

[0100] In an embodiment of the present application, the shell 110a may further include a LOGO layer (not shown). The LOGO layer may be located between the first coating layer 114 and the hardening layer 116, or may be located between the second coating layer 118 and the hardening layer 116. The LOGO layer may be combined with the first bonding layer 115 or the second bonding layer 119 to form a layer structure.

[0101] When the housing 110a provided in the embodiment of the present application is used in the electronic device 100, as shown in FIG7 , the outer edge of the housing 110a has a chamfered surface 170. As shown in FIG7 , the corresponding width L of the chamfered surface 170 in the metal layer is greater than or equal to 0.5 mm and less than or equal to 3 mm. For example, the width L can be 1 mm or 2 mm.

[0102] It can be understood that the laminated structure 180 in Figure 7 can be a laminated structure consisting of an intermediate layer 112 and a first texture layer 113, or a laminated structure consisting of an intermediate layer 112, a first texture layer 113, a first coating layer 114, a first bonding layer 115 and a hardening layer 116, or a laminated structure consisting of an intermediate layer 112, a first texture layer 113, a first coating layer 114, a first bonding layer 115, a second texture layer 117, a second coating layer 118, a second bonding layer 119 and a hardening layer 116.

[0103] Among them, in the manufacturing process of the shell 110a, when coating each layer structure (such as the intermediate layer 112, the first texture layer 113, the first coating layer 114, the first bonding layer 115 or the hardening layer 116) on the metal plate 111, glue overflow may occur at the place where the two surfaces of the shell 110a interact. In order to ensure the aesthetic appearance of the shell 110a, the part of the shell 110a where the glue overflow occurs can be cut off to form a chamfered plane 170. By setting the chamfered plane 170, excess glue overflow can be removed without affecting the appearance of the shell 110a. In addition, anodizing can be performed at the chamfered plane 170 to prevent the chamfered plane 170 from being easily corroded after the glue overflow is removed, and to improve the metal hardness, wear resistance and refinement.

[0104] It is understood that in some examples, as shown in Figure 7, the chamfered surface 170 extends simultaneously across the metal plate 111, the intermediate layer 112, and the first texture layer 113, resulting in a highlighted chamfered surface at chamfered surface 170. Therefore, in the embodiment of the present application, by including the aforementioned housing 110a and combining it with the highlighted chamfered surface 170, the back cover 110 combines a cool metallic feel with a colorful textured exterior and seamless sophistication, effectively enhancing the product's appearance and competitiveness.

[0105] In the description of the embodiments of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to a fixed connection, an indirect connection via an intermediate medium, internal communication between two components, or an interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on specific circumstances.

[0106] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the embodiments of this application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

Claims

1. A housing, characterized in that: It comprises a metal plate, an intermediate layer and a first texture layer which are stacked, wherein the intermediate layer is located between the metal plate and the first texture layer; The intermediate layer contains more than 80% by mass of acrylic resin.

2. The housing according to claim 1, characterized in that The acrylic resin is obtained by reacting 60%-90% by mass of a modified acrylic resin and 10%-40% by mass of a polyester acrylic resin; The modified acrylate includes silane-modified acrylate and / or hydroxypropyl-modified acrylate.

3. The housing according to claim 1 or 2, characterized in that: The intermediate layer further comprises additives, and the additives comprise colorants and fillers.

4. The housing according to claim 3, characterized in that: The intermediate layer is formed by coating the mixed modified acrylic resin (60% to 90% by mass), polyester acrylic resin (10% to 40% by mass), a curing agent and the additive on the metal plate and then thermally curing the mixed layer.

5. The housing according to any one of claims 1 to 4, characterized in that: Also includes: A first coating layer, wherein the first coating layer is located on a side of the first texture layer facing away from the intermediate layer.

6. The housing according to claim 5, characterized in that Also includes: A hardening layer and a first bonding layer, wherein the first bonding layer is located between the first coating layer and the hardening layer; The first bonding layer is used to connect the first coating layer and the hardening layer.

7. The housing according to claim 6, characterized in that Also includes: A second texture layer is located between the first bonding layer and the hardening layer.

8. The housing according to claim 7, characterized in that Also includes: A second coating layer, wherein the second coating layer is located between the second texture layer and the hardening layer.

9. The housing according to claim 8, characterized in that Also includes: The second bonding layer is located between the second coating layer and the hardening layer.

10. The housing according to any one of claims 7 to 9, characterized in that: The first texture layer, the second texture layer and the hardening layer are all UV adhesive layers, and the UV adhesive layers include polyurethane acrylic resin.

11. The housing according to any one of claims 6 to 9, characterized in that: The hardened layer includes at least one of a textured UV texture layer and a non-textured hard film layer, and the hardness of the hardened layer is greater than the hardness of the first texture layer.

12. The housing according to claim 9, characterized in that The first bonding layer and the second bonding layer are adhesive layers formed of any one of polyurethane, polyester, and epoxy resin.

13. The housing according to any one of claims 1 to 12, characterized in that: The thickness of the intermediate layer is 10-35 μm.

14. The housing according to any one of claims 7 to 9, characterized in that: The thickness of the second texture layer and the first texture layer is 10-25 μm.

15. The housing according to any one of claims 6 to 9, characterized in that: The thickness of the hardened layer is 10-25 μm.

16. The housing according to claim 8, characterized in that The thickness of the second coating layer and the first coating layer is 50-150 nm.

17. The housing according to claim 9, characterized in that The thickness of the second bonding layer and the first bonding layer is 6-10 μm.

18. The housing according to claim 8 or 9, characterized in that: The first coating layer and the second coating layer include one or more of SiO, ZrO2, Ti3O5 and SiO2.

19. The housing according to any one of claims 1 to 12, characterized in that: The outer edge of the housing has a chamfered surface.

20. The housing according to claim 19, characterized in that The chamfered plane extends simultaneously on the metal plate, the intermediate layer and the first texture layer.

21. The housing according to claim 20, characterized in that The corresponding width in the chamfered plane metal layer is greater than or equal to 0.5 mm and less than or equal to 3 mm.

22. An electronic device, characterized in that: A shell comprising any one of claims 1-21.

23. The electronic device according to claim 22, characterized in that: The electronic device comprises a display screen and a middle frame, wherein the middle frame is arranged between the display screen and the shell, and a side of a metal plate of the shell facing away from the metal plate faces the middle frame.

24. The electronic device according to claim 22 or 23, characterized in that: The electronic device is a tablet computer.

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