WO2020259359A1 - 壳体组件及其制备方法、电子设备 - Google Patents

壳体组件及其制备方法、电子设备 Download PDF

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Publication number
WO2020259359A1
WO2020259359A1 PCT/CN2020/096476 CN2020096476W WO2020259359A1 WO 2020259359 A1 WO2020259359 A1 WO 2020259359A1 CN 2020096476 W CN2020096476 W CN 2020096476W WO 2020259359 A1 WO2020259359 A1 WO 2020259359A1
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WO
WIPO (PCT)
Prior art keywords
layer
housing assembly
soft substrate
color
appearance
Prior art date
Application number
PCT/CN2020/096476
Other languages
English (en)
French (fr)
Inventor
武鑫
毕四鹏
侯体波
Original Assignee
Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to EP20832821.1A priority Critical patent/EP3955714B1/en
Publication of WO2020259359A1 publication Critical patent/WO2020259359A1/zh
Priority to US17/531,376 priority patent/US20220078935A1/en

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0217—Mechanical details of casings
    • H05K5/0243—Mechanical details of casings for decorative purposes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/02—Printing inks
    • C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
    • C09D11/037—Printing inks characterised by features other than the chemical nature of the binder characterised by the pigment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/16—Layered products comprising a layer of synthetic resin specially treated, e.g. irradiated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/14—Printing or colouring
    • B32B38/145—Printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • B32B7/023—Optical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C5/00—Processes for producing special ornamental bodies
    • B44C5/04—Ornamental plaques, e.g. decorative panels, decorative veneers
    • B44C5/0407—Ornamental plaques, e.g. decorative panels, decorative veneers containing glass elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0262—Details of the structure or mounting of specific components for a battery compartment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/0279—Improving the user comfort or ergonomics
    • H04M1/0283—Improving the user comfort or ergonomics for providing a decorative aspect, e.g. customization of casings, exchangeable faceplate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/402—Coloured
    • B32B2307/4023—Coloured on the layer surface, e.g. ink
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/406—Bright, glossy, shiny surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/414—Translucent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/546—Flexural strength; Flexion stiffness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/732—Dimensional properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C3/00—Processes, not specifically provided for elsewhere, for producing ornamental structures
    • B44C3/02—Superimposing layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C5/00—Processes for producing special ornamental bodies
    • B44C5/04—Ornamental plaques, e.g. decorative panels, decorative veneers

Definitions

  • This application relates to the field of electronic equipment, in particular, to a housing assembly and a preparation method thereof, and electronic equipment.
  • the glass material has the characteristics of good light transmission, corrosion resistance, heat resistance and easy processing.
  • the diaphragm decoration has the characteristics of easy processing, low price, and diversified appearance. Therefore, it is made of transparent substrate and decorative diaphragm.
  • Electronic equipment casings have been widely used.
  • the battery back cover of many mobile phones uses a glass shell and a method of attaching a diaphragm to achieve the appearance effect.
  • this application proposes a housing assembly.
  • the housing assembly includes: a housing base, the housing base has a bottom surface, and a side wall connected to the bottom surface, and a bending angle between the side wall and the bottom surface Greater than 70 degrees; and an appearance film, the appearance film is disposed on one side of the housing base, the appearance film includes: a soft substrate; and a mirror silver layer, the mirror silver layer is disposed on the On one side of the soft substrate, wherein the elastic modulus of the soft substrate is 800-2000 MPa.
  • the housing assembly has a relatively large arc, and the appearance of the diaphragm and the housing base is tightly attached.
  • the housing assembly has a good appearance effect and can achieve a metallic luster effect without metal coating. Strong expressiveness.
  • this application proposes a method for preparing a housing assembly.
  • the method includes: providing a housing base, the housing base having a bottom surface, and a side wall connected to the bottom surface, and a bending angle between the side wall and the bottom surface is greater than 70 degrees; and forming an appearance film, and attaching the appearance film to one side of the housing base, wherein the forming the appearance film further includes: providing a soft substrate; in the soft A mirror silver layer is formed on one side of the substrate, wherein the elastic modulus of the soft substrate is 800-2000 MPa. Therefore, the shell assembly prepared by the method has a large curvature, and the appearance film and the shell base are closely attached. The appearance effect of the shell assembly is good, and the metal luster can be realized without metal coating. The effect, the product expressive force is strong.
  • this application proposes an electronic device.
  • the electronic device includes: the aforementioned housing assembly or the housing assembly prepared by the aforementioned method, the housing assembly defines an accommodating space, and the appearance film of the housing assembly The sheet is arranged facing the inside of the electronic device, the housing assembly is provided with a motherboard and a memory, the motherboard and the memory are located inside the accommodating space; and a screen is arranged on the top of the housing assembly and Connected to the motherboard. Therefore, the electronic device has all the features and advantages of the aforementioned housing assembly or the housing assembly prepared by the aforementioned method, which will not be repeated here. In general, the electronic device has a good appearance and a strong product performance.
  • Figure 1 shows a schematic structural view of a housing assembly according to an embodiment of the present application
  • Figure 2 shows a schematic structural diagram of a housing base according to an embodiment of the present application
  • Fig. 3 shows a schematic diagram of a partial cross-sectional structure of a housing assembly according to an embodiment of the present application
  • Fig. 4 shows a partial cross-sectional structural diagram of a housing assembly according to another embodiment of the present application
  • Fig. 5 shows a schematic partial cross-sectional structure diagram of a housing assembly according to another embodiment of the present application
  • Fig. 6 shows a schematic partial cross-sectional structure diagram of a housing assembly according to another embodiment of the present application.
  • Fig. 7 shows a flowchart of a method for preparing a housing assembly according to an embodiment of the present application
  • Fig. 8 shows a flowchart of a method for preparing an appearance film according to an embodiment of the present application
  • Figure 9 shows a flow chart of a method for preparing an appearance film according to another embodiment of the present application.
  • FIG. 10 shows a flowchart of a method for preparing an appearance film according to another embodiment of the present application.
  • Fig. 11 shows a schematic structural diagram of an electronic device according to an embodiment of the present application.
  • 100 shell substrate; 110: bottom surface; 120: side wall; 200: appearance diaphragm; 210: soft substrate; 220: color layer; 240: texture layer; 230: mirror silver layer; 250: cover bottom layer; 1000 : Housing components; 1100: Electronic equipment.
  • PET film polyethylene terephthalate film
  • transparent substrate + appearance film As the base material of the appearance film, and transfer the texture layer, electroplating metal layer and printing ink layer on the PET film, so that the appearance film has a rich appearance effect, and then paste the appearance film and the transparent substrate Together.
  • the bending angle of the transparent substrate is usually small.
  • the commonly used 3D glass cover plate has a limited degree of bending.
  • the appearance of the film is in the lamination process, the PET film and the PET film
  • the laminated materials (such as the aforementioned texture layer, metal layer, ink layer, etc.) on the sheet will not be significantly stretched, so the aforementioned appearance film with PET film as the base material can be better It is bonded to the transparent substrate to achieve a better appearance.
  • the elastic modulus of the PET film is more than 4000Mpa, the material is harder and the flexibility is poor, so it is more difficult to fit on the four sides of the curved arc.
  • This application aims to solve one of the technical problems in the related technology at least to a certain extent.
  • the housing assembly 1000 includes a housing base 100 and an appearance diaphragm 200, and the appearance diaphragm 200 is disposed on one side of the housing base 100.
  • the housing base 100 has a bottom surface 110 and a side wall 120 connected to the bottom surface 110 (the side walls 120 may be two oppositely arranged, or may be connected to each other as shown in FIG. 2 4 side walls 120), the bending angle between the side wall 120 and the bottom surface 110 is greater than 70 degrees (refer to the bending angle a shown in FIG. 1).
  • FIG. 3 a schematic cross-sectional view of area M in FIG.
  • the appearance film 200 includes: a soft substrate 210 and a mirror silver layer 230.
  • the mirror silver layer 230 is disposed on one side of the soft substrate 210, wherein the soft
  • the elastic modulus of the substrate 210 is 800 to 2000 MPa. Therefore, the elastic modulus of the soft substrate 210 is small, the flexibility of the soft substrate is good, the housing assembly 1000 has a large curvature, and the appearance of the diaphragm 200 and the housing base 100 Close fit; the casing assembly 1000 has a good appearance effect, without metal coating, the metallic luster effect can be achieved through the mirror silver layer 230, and the brightness of the casing assembly 1000 can be improved, and the product has a strong expression.
  • the term "bending angle" in this application specifically refers to the angle between the side wall 120 and the bottom surface 110 (the angle a shown in FIG. 1).
  • the bottom surface 110 may be a curved surface. It may also be a plane.
  • the bending angle is the angle between the side wall and the plane where the bottom surface is located.
  • the outer surface of the side wall 120 (the surface on the side away from the appearance film 200) is a plane
  • the bending angle is the angle between the plane where the outer surface of the side wall 120 is located and the bottom surface 110.
  • the bending angle of the side wall 120 and the bottom surface 110 is the maximum value of the angle between the tangent to any point on the curved surface of the side wall and the plane where the bottom surface 110 is located.
  • the angle between the side wall and the bottom surface may be the angle between the side wall and the tangent plane of the bottom surface.
  • the housing base 100 may have four side walls 120, and the bending angles between the four side walls 120 and the bottom surface 110 may be all equal or not all equal. For example, among the four side walls, the bending angles between the two oppositely arranged side walls and the bottom surface may be equal, and the bending angles between the two adjacent side walls and the bottom surface may not be equal.
  • the electronic device housing is made by using a transparent glass substrate and attaching an appearance film with colors and patterns. Because the bending angle of the glass substrate is small, the existing PET film can be combined with the glass substrate. Fits closely to achieve a better appearance. However, when the shell substrate (such as glass) has a large bending angle, it is difficult to adhere to a shell substrate that is bent at a large angle (for example, a bending angle greater than 30 degrees) due to the rigidity of the PET film and poor ductility. According to the housing assembly of the embodiment of the present application, a soft substrate with a small elastic modulus (elastic modulus of 800-2000 MPa) is used as the base material of the appearance diaphragm, and the soft substrate has better flexibility.
  • a small elastic modulus elastic modulus of 800-2000 MPa
  • the coating layer is formed on the soft substrate (to achieve the metallic luster effect of the housing assembly) by the commonly used metal coating method, the coating The material of the layer (usually metal oxide) is hard and brittle, and the bonding force between the coating layer and the soft substrate is poor, and when the appearance film is attached to the substrate with a large bending angle, the coating layer It is easy to break and affect the appearance of the shell assembly.
  • a mirror silver layer is provided on the side of the soft substrate away from the housing base.
  • the manufacturing process of the mirror silver layer is simple. For example, it can be formed by silk screen printing, so that it does not need to be coated with metal.
  • the use of the mirror silver layer can achieve the metallic luster effect of the shell assembly, which can improve the brightness of the shell assembly and product expression; and the binding force of the mirror silver layer and the soft substrate is strong, and the appearance of the film and After the shell substrate with a larger bending angle is attached, the mirror silver layer is not easy to break, the product yield is high, and the appearance effect is good.
  • the specific type of the housing base 100 is not particularly limited, for example, it may be glass or the like.
  • the bottom surface 110 may be a curved surface or a flat surface.
  • the housing base 100 has a bottom surface 110 and a side wall 120 connected to the bottom surface 110.
  • the housing assembly 100 may have four side walls 120 that surround the bottom surface 110 and are connected to each other.
  • the bending angle between the side wall 120 and the bottom surface 110 is greater than 70 degrees (refer to the bending angle a shown in FIG.
  • the bending angle a between the side wall 120 and the bottom surface 110 may be 80 degrees , Can be 90 degrees, can be 100 degrees, can be 120 degrees, can be 130 degrees, etc., that is, the side wall 120 of the housing base 100 can be perpendicular to the bottom surface 110 (that is, the bending angle a is 90 degrees), and It can be bent toward the inside of the housing base 100 (that is, the bending angle a is greater than 90 degrees).
  • the four sidewalls 120 of the housing base 100 can all have larger bending angles. Therefore, the housing base 100 can have a rich appearance, which can enhance product expression.
  • the specific type of the soft substrate 210 is not particularly limited, as long as it has good flexibility.
  • the elastic modulus of the soft substrate 210 may be 800-2000 MPa, for example, it may be 1000 MPa, it may be 1200 MPa, it may be 1500 MPa, it may be 1800 MPa, and so on. Therefore, compared with the PET film with the elastic modulus as high as 4000Mpa, the soft substrate has better flexibility, better ductility, and better curved surface adaptability, which is convenient to fit on the four sides with larger curvature. On the glass, the fit is tight, and the appearance of the formed shell assembly is good.
  • the material forming the soft substrate 210 may include at least one of thermoplastic polyurethane (TPU), polyvinyl chloride (PVC), and thermoplastic elastomer.
  • the thermoplastic elastomer may be polystyrene as the terminal segment and polybutylene
  • the ethylene-butene copolymer obtained by hydrogenation of diene is a linear triblock copolymer (SEBS) with a middle elastic block, which can be ethylene-isoprene obtained by hydrogenating polyisoprene with polystyrene as the terminal block
  • SEBS linear triblock copolymer
  • SEPS linear triblock copolymer
  • it may be thermoplastic polyurethane or the like.
  • the thickness of the soft substrate 210 may be 80-100 ⁇ m, for example, it may be 85 ⁇ m, it may be 90 ⁇ m, it may be 95 ⁇ m, or the like. When the thickness of the soft substrate 210 is within the above range, it can be better attached to the housing base 100 bent at a large angle.
  • the appearance film 200 may further include a color layer 220, which is disposed between the soft substrate and the mirror silver layer, that is, the color layer 220 may be disposed on the soft substrate
  • the mirror silver layer 230 is disposed on the side of the color layer 220 away from the soft substrate 210. Therefore, the color layer 220 can enhance the bonding force between the soft substrate 210 and the mirror silver layer 230.
  • the appearance film 200 is bonded to the housing base 100 with a larger bending angle, the mirror silver layer 230 It is not easy to break, the product yield is high, and the appearance effect is good.
  • the color layer 220 may be formed by silk-printing color ink on one side of the soft substrate 210.
  • the color of the color layer 220 is not particularly limited, and those skilled in the art can select according to the color effect that needs to be achieved, for example, it can be blue, purple, black, white, red, pink, etc.
  • the light transmittance of the color layer 220 can be 30% to 70%, for example, it can be 35%, it can be 50%, it can be 65%, and so on.
  • the color layer 220 with this transmittance range can form a superimposed appearance effect with the mirror silver layer 230, etc., so that the housing assembly 1000 can have both color and metallic luster effects, and the housing assembly 1000 has high brightness. Product performance is strong.
  • the color layer 220 is arranged on the side of the soft substrate 210 away from the housing base 100, and the mirror silver layer 230 is arranged on the color layer 220 away from the soft substrate 210.
  • the housing base 100 is the side facing the user, and the mirror silver layer 230 is provided on the side close to the inside of the electronic device. Therefore, in order to The user can observe the superimposition effect of the color layer 220 and the mirror silver layer 230 from the side of the housing substrate 100.
  • the transmittance of the color layer 220 can be 30% to 70%, that is, the color layer 220 can be semi-transparent. Therefore, the color layer 220 not only has a color effect, but also can reveal the metallic luster effect of the mirror silver layer 230, which further improves the appearance effect of the housing assembly 1000.
  • the thickness of the color layer 220 may be 4-12 ⁇ m, for example, 5 ⁇ m, 7 ⁇ m, 9 ⁇ m, 11 ⁇ m, or the like.
  • the color layer 220 with this thickness range has relatively moderate light transmittance, which can make the housing assembly 1000 have color and metallic luster effects at the same time, and the appearance effect is better.
  • the thickness of the color layer 220 is too small (for example, less than 4 ⁇ m), the color effect is not obvious; when the thickness of the color layer 220 is too large (for example, greater than 12 ⁇ m), the light transmittance of the color layer 220 will decrease, thereby affecting the shell The overall appearance of the body component 1000.
  • the mirror silver layer 230 is disposed on the side of the color layer 220 away from the soft substrate 210, and the mirror silver layer 230 may be formed by silk-screening mirror silver ink.
  • the thickness of the mirror silver layer 230 may be 2-8 ⁇ m, for example, it may be 3 ⁇ m, it may be 5 ⁇ m, it may be 7 ⁇ m, or the like. Therefore, when the thickness of the mirror silver layer 230 is in the above range, the housing assembly 1000 can have a better metallic luster effect, and the brightness of the housing assembly 1000 can be higher, and the appearance effect of the housing assembly 1000 can be further improved. .
  • the thickness of the mirror silver layer 230 is too small (for example, less than 2 ⁇ m), the metallic effect of the mirror silver layer 230 is not obvious; if the thickness of the mirror silver layer 230 is too large (for example, greater than 8 ⁇ m), the production cost is higher, and the metal The improvement in gloss effect is not significant.
  • the brightness L value of the housing assembly 1000 may be 60-80. Therefore, the brightness L value of the housing assembly 1000 is larger, the brightness is better, the appearance effect is better, and the product expressiveness is strong. It should be noted that the brightness L value ranges from 0 to 100, the larger the L value, the brighter the brightness (white), and the smaller the L value, the darker the brightness (black).
  • the appearance film 200 may further include a texture layer 240, and the texture layer 240 may be disposed between the color layer 220 and the specular silver layer 230. Therefore, the texture layer 240 can be superimposed on the mirror silver layer 230 to achieve a rich metallic glare effect and further enrich the appearance effect of the housing assembly 1000.
  • the thickness of the texture layer 240 may be 6-12 ⁇ m, for example, it may be 7 ⁇ m, it may be 9 ⁇ m, it may be 11 ⁇ m, or the like.
  • the texture layer 240 with this thickness range can be better superposed with the mirror silver layer 230 to form a housing assembly with better metallic glare effect.
  • the appearance film 200 may further include a bottom layer 250, which is disposed on the side of the mirror silver layer 230 away from the color layer 220, and the light transmittance of the bottom layer 250 is not greater than 1 %. Therefore, when the appearance film 200 is attached to the housing base 100 and used in the housing of an electronic device or the like, the appearance film 200 faces the inside of the electronic device, and further, the cover bottom layer of the appearance film 200 250 is arranged close to the inside of the electronic device, and the bottom cover 240 can shield the internal components of the electronic device and so on, further improving the usability of the housing assembly 1000.
  • the bottom cover ink such as black ink, white ink, etc.
  • the bottom cover ink can be printed on the side of the mirror silver layer 230 away from the texture layer 240 to form the bottom cover 250.
  • the thickness of the capping layer 250 may be 20-30 ⁇ m, for example, it may be 21 ⁇ m, it may be 23 ⁇ m, it may be 25 ⁇ m, it may be 27 ⁇ m, it may be 29 ⁇ m, or the like. Therefore, when the thickness of the cover layer 250 is in the above range, the internal components of the electronic device can be better shielded, the usability of the housing assembly 1000 is further improved, and the appearance effect is improved.
  • the thickness of the capping layer is too small (for example, less than 20 ⁇ m), the shading effect will be poor; if the thickness of the capping layer is too high (for example, higher than 30 ⁇ m), the capping layer will have high brittleness and poor adhesion.
  • the elastic modulus of the soft substrate 210 is small, the flexibility of the soft substrate is better, and the housing assembly 1000 has a larger curvature, and The appearance film 200 and the housing base 100 are tightly attached; the appearance effect of the housing assembly 1000 is good, and the metallic glare effect can be achieved through the mirror silver layer 230, without the need for metal coating, and the product is highly expressive.
  • this application proposes a method for preparing a housing assembly.
  • the shell assembly prepared by this method may be the aforementioned one. Therefore, the shell assembly prepared by this method has all the features and beneficial effects of the aforementioned shell assembly. This will not be repeated here.
  • the shell assembly made by this method can have a larger curvature, and the appearance film and the shell base are closely attached, the appearance effect of the shell assembly is good, and there is no need for metal coating, namely It can realize the metallic glare effect, and the product has strong expressive power.
  • the method includes:
  • a housing base is provided.
  • the housing base may be the aforementioned, for example, the housing base may be made of glass material, the housing base has a bottom surface, and side walls connected to the bottom surface, and the folding between the side walls and the bottom surface The bend angle is greater than 70 degrees, etc.
  • the method further includes:
  • the soft substrate may be the aforementioned one, for example, the material forming the soft substrate may include at least one of thermoplastic polyurethane, polyvinyl chloride, and thermoplastic elastomer; an elastic mold of the soft substrate
  • the amount can be 800-2000MPa. Therefore, when the elastic modulus of the soft substrate is in the above range, its flexibility is good, and it is suitable for bonding to the shell substrate with a large bending angle. It fits tightly and is not easy to produce. Air bubbles improve the appearance of the prepared shell assembly; specifically, the thickness of the soft substrate can be 80-100 ⁇ m, etc., when the thickness of the soft substrate is within the above range, it can be better attached to a large angle On the curved housing base.
  • the color ink composition can be screen printed on one side of the soft substrate to form a color layer.
  • a rich color effect can be formed on the soft substrate.
  • the color ink composition can be formulated according to color requirements.
  • the color ink composition can include a color ink, a first curing agent, and a first diluent.
  • the color of the color ink is not particularly limited. Specifically, the color ink can be black, white, pink, gold, silver, light blue, purple, red, etc.
  • the content of the first curing agent may be 5%-30%, and the content of the first diluent may be 5%-20%.
  • the color ink composition can be placed upside down on the screen printing screen of an automatic screen printing machine, and the color ink composition can be printed on a soft substrate (such as a thermoplastic polyurethane (TPU) film) through a squeegee.
  • a soft substrate such as a thermoplastic polyurethane (TPU) film
  • TPU thermoplastic polyurethane
  • the number can be between 280 and 420 meshes (the number of screen meshes is the number of holes on an inch screen, the larger the mesh number, the higher the fineness).
  • the light transmittance of the formed color layer may be 30% to 70%.
  • the color layer with this transmittance range can form a superimposed appearance effect with the mirror silver layer formed in the subsequent step, so that the shell assembly can have both color and metallic luster effects, and the prepared shell assembly High brightness, strong product performance.
  • the thickness of the color layer may be 4-12 ⁇ m.
  • the appearance effect of the housing assembly is further improved.
  • the method may further include:
  • a texture layer is formed on the side of the color layer away from the soft substrate.
  • the texture layer can be formed by UV transfer.
  • various textures can be processed on the surface of the soft substrate (such as thermoplastic polyurethane (TPU)).
  • TPU thermoplastic polyurethane
  • the texture layer can be superimposed on the mirror silver layer formed in the following steps to achieve richness. Metallic glare effect.
  • UV glue can be dispensed on the optical texture mold (master), and then covered with a soft substrate (such as a thermoplastic polyurethane (TPU) substrate), and the thermoplastic polyurethane (TPU) substrate can be attached to the master ,
  • a soft substrate such as a thermoplastic polyurethane (TPU) substrate
  • TPU thermoplastic polyurethane
  • TPU thermoplastic polyurethane
  • the silicone pressure roller is pressurized with a pressure of 0.1 ⁇ 3Mpa and cured together after extrusion and bonding.
  • the UV glue is cured, the mold is removed, and the texture mold (master) is separated from the thermoplastic polyurethane (TPU) substrate, and the UV glue is left On the thermoplastic polyurethane (TPU) substrate, the desired texture is obtained.
  • the UV curing energy of UV transfer can be 1000-1500 mj/cm 2 , for example, it can be 1200 mj/cm 2 , it can be 1300 mj/cm 2 , it can be 1400 mj/cm 2, etc.
  • the thickness of the texture layer may be 6-12 ⁇ m. Therefore, the texture layer with this thickness range can be better superposed with the mirror silver layer to form a housing assembly with better glare effect.
  • the color layer formed in the previous step is away from the side of the soft substrate, or the texture layer formed in the previous step is away from the color layer to form a mirror-like silver layer.
  • the method of forming the mirror silver layer and the formed mirror silver layer can be the same as those described above, and will not be repeated here.
  • the mirror silver layer can be formed by a method of silk-screening mirror silver ink, which is simple to operate and easy to control, and further enriches the appearance effect of the prepared shell assembly.
  • the mirror silver ink composition can be printed on the side of the texture layer away from the color layer by a silk screen method.
  • the composition of the mirror silver ink composition is not particularly limited.
  • the mirror silver ink composition may include mirror silver ink, a second curing agent, and a second diluent, wherein the content of the second curing agent may be 1% to 10%, the content of the second diluent can be 2% to 5%.
  • the formed mirror silver layer has a better metallic luster effect
  • the prepared housing assembly has higher brightness, good appearance effect, and strong product expression.
  • the brightness L value of the housing assembly may be 60-80.
  • the mirror silver ink composition can be placed upside down on the screen printing screen of an automatic screen printing machine, and the mirror silver ink can be printed on the texture layer by squeegee.
  • the mirror silver ink can use commercially available inks.
  • the screen mesh number (one The number of holes in the inch screen, the larger the mesh, the better the fineness) can be 280-420 mesh.
  • the thickness of the formed specular silver layer can be 2-8 ⁇ m, and the specular silver layer having this thickness range can make the prepared shell assembly have a better metallic glare effect and higher brightness.
  • the method may further include the following steps:
  • the bottom cover ink is printed on the side of the mirror silver layer away from the texture layer to form the bottom cover layer.
  • the bottom layer of the cover layer may be the aforementioned, for example, the light transmittance of the bottom layer is not more than 1%; the thickness of the bottom layer can be 20-30 ⁇ m.
  • the bottom cover ink can be printed multiple times on the side of the mirror silver layer away from the texture layer (the thickness of the bottom cover formed by one printing is too thick, the brittleness is high, the adhesion is poor, and the performance is poor), such as black ink , White ink, etc., forming the bottom layer.
  • the bottom layer of the cover layer is formed by reciprocating the printing ink for the bottom cover layer and solidified, which can further prevent light leakage of the bottom layer layer and further improve the usability of the prepared housing assembly.
  • the thickness of the base layer formed after each printing may be 5-8 ⁇ m, and the total thickness of multiple printing may be 20-30 ⁇ m.
  • the cover layer with this thickness range has better shading effect and adhesion, and can protect the mirror silver layer of the silk screen from being corroded.
  • the number of screen meshes when printing the undercover ink can be 350-420 meshes.
  • the shell assembly made by this method has a relatively large radian, and the appearance film and the shell base are closely attached. The appearance effect of the shell assembly is good, and no metal coating is required. Realize the metallic glare effect, the product has strong expressive power.
  • the electronic device 1100 includes: the aforementioned housing assembly 1000 or the housing assembly prepared by the aforementioned method, a motherboard, a memory, and a screen (not shown in the figure)
  • the housing assembly 1000 defines an accommodation space
  • the appearance film (not shown in the figure) of the housing assembly 1000 is arranged toward the inside of the electronic device
  • the motherboard and the memory are located inside the accommodation space
  • the screen is arranged on the top of the housing assembly 1000 and Connect with the motherboard. Therefore, the electronic device 1100 has all the features and advantages of the aforementioned housing assembly 1000 or the housing assembly prepared by the aforementioned method, which will not be repeated here.
  • the electronic device 1100 has good appearance and strong product performance.
  • the electronic device may be any of various types of computer system devices that are mobile or portable and perform wireless communication.
  • the electronic device may be a mobile phone or a smart phone (for example, a phone based on iPhoneTM, AndroidTM), a portable game device (for example, Nintendo DSTM, PlayStation PortableTM, Gameboy AdvanceTM, iPhoneTM), laptop Computers, PDAs, portable Internet devices, music players, and data storage devices, other handheld devices, such as watches, earphones, pendants, headsets, etc.
  • electronic devices can also be other wearable devices (such as electronic Glasses, electronic clothes, electronic bracelets, electronic necklaces, electronic tattoos, electronic devices or head-mounted devices (HMD) for smart watches).
  • HMD head-mounted devices
  • the electronic device can also be any one of multiple electronic devices, including but not limited to cellular phones, smart phones, other wireless communication devices, personal digital assistants, audio players, other media players, music recorders, Video recorders, cameras, other media recorders, radios, medical equipment, vehicle transportation equipment, calculators, programmable remote controls, pagers, laptop computers, desktop computers, printers, netbook computers, personal digital assistants (PDA), portable multimedia Players (PMP), Moving Picture Experts Group (MPEG-1 or MPEG-2) Audio Layer 3 (MP3) players, portable medical equipment and digital cameras and combinations thereof.
  • PDA personal digital assistants
  • PMP portable multimedia Players
  • MPEG-1 or MPEG-2 Moving Picture Experts Group
  • MP3 Motion Picture Experts Group Audio Layer 3
  • electronic devices can perform multiple functions (for example, play music, display videos, store pictures, and receive and send phone calls).
  • the electronic device may be a portable device such as a cell phone, media player, other handheld device, wrist watch device, pendant device, earpiece device, or other compact portable device.

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Abstract

提出了一种壳体组件及其制备方法、电子设备。具体的，本申请提出了一种壳体组件，该壳体组件包括壳体基体，所述壳体基体具有一个底面，以及和所述底面相连的侧壁，所述侧壁与所述底面之间的折弯角大于70度；以及外观膜片，所述外观膜片设置在所述壳体基体的一侧，所述外观膜片包括：软质衬底；以及镜面银层，所述镜面银层设置在所述软质衬底的一侧，其中，所述软质衬底的弹性模量为800～2000MPa。

Description

壳体组件及其制备方法、电子设备
优先权信息
本申请请求2019年06月27日向中国国家知识产权局提交的、专利申请号为201910568849.1的专利申请的优先权和权益，并且通过参照将其全文并入此处。
技术领域
本申请涉及电子设备领域，具体地，涉及壳体组件及其制备方法、电子设备。
背景技术
随着电子设备领域制备技术的不断发展，用于电子设备的壳体材料也随之丰富。玻璃材料具有良好的透光性、耐腐蚀性、耐热性以及易于加工等特点，膜片装饰具有易于加工、价格便宜、外观多样化等特点，因此采用透明基体和装饰膜片的方式制作的电子设备外壳得到了非常广泛的应用。例如许多手机的电池后盖，都采用玻璃壳体以及贴合膜片的方式来实现外观效果。
然而，目前的壳体组件及其制备方法、电子设备仍有待改进。
发明内容
在本申请的一个方面，本申请提出了一种壳体组件。根据本申请的实施例，该壳体组件包括：壳体基体，所述壳体基体具有一个底面，以及和所述底面相连的侧壁，所述侧壁与所述底面之间的折弯角大于70度；以及外观膜片，所述外观膜片设置在所述壳体基体的一侧，所述外观膜片包括：软质衬底；以及镜面银层，所述镜面银层设置在所述软质衬底的一侧，其中，所述软质衬底的弹性模量为800～2000MPa。由此，该壳体组件具有较大的弧度，且外观膜片和壳体基体之间贴合紧密，该壳体组件的外观效果良好，且无需进行金属镀膜，即可实现金属光泽效果，产品表现力强。
在本申请的另一个方面，本申请提出了一种制备壳体组件的方法。根据本申请的实施例，该方法包括：提供壳体基体，所述壳体基体具有一个底面，以及和所述底面相连的侧壁，所述侧壁与所述底面之间的折弯角大于70度；以及形成外观膜片，并将所述外观膜片贴合在所述壳体基体的一侧，其中，所述形成外观膜片进一步包括：提供软质衬底；在所述软质衬底的一侧形成镜面银层，其中，所述软质衬底的弹性模量为800～2000MPa。由此，该方法制备的壳体组件具有较大的弧度，且外观膜片和壳体基体之间贴合紧密，该壳体组件的外观效果良好，且无需进行金属镀膜，即可实现金属光泽效果，产品表现力强。
在本申请的又一个方面，本申请提出了一种电子设备。根据本申请的实施例，该电子设备包括：前面所述的壳体组件或者前面所述的方法所制备的壳体组件，所述壳体组件限定出容纳空间，所述壳体组件的外观膜片朝向所述电子设备的内部设置，所述壳体组件中设置有主板以及存储器，所述主板以及存储器位于所述容纳空间内部；以及屏幕，所述屏幕设置在所述壳体组件的顶部且与所述主板相连。由此，该电子设备具有前面所述的壳体组件或前面所述的方法所制备的壳体组件所具有的全部特征以及优点，在此不再赘述。总的来说，该电子设备外观效果良好，产品表现力强。
附图说明
图1显示了根据本申请一个实施例的壳体组件的结构示意图；
图2显示了根据本申请一个实施例的壳体基体的结构示意图；
图3显示了根据本申请一个实施例的壳体组件的部分剖面结构示意图；
图4显示了根据本申请另一个实施例的壳体组件的部分剖面结构示意图；
图5显示了根据本申请又一个实施例的壳体组件的部分剖面结构示意图；
图6显示了根据本申请又一个实施例的壳体组件的部分剖面结构示意图；
图7显示了根据本申请一个实施例的制备壳体组件的方法流程图；
图8显示了根据本申请一个实施例的制备外观膜片的方法流程图；
图9显示了根据本申请另一个实施例的制备外观膜片的方法流程图；
图10显示了根据本申请又一个实施例的制备外观膜片的方法流程图；以及
图11显示了根据本申请一个实施例的电子设备的结构示意图。
附图标记说明：
100：壳体基体；110：底面；120：侧壁；200：外观膜片；210：软质衬底；220：颜色层；240：纹理层；230：镜面银层；250：盖底层；1000：壳体组件；1100：电子设备。
具体实施方式
下面详细描述本申请的实施例，所述实施例的示例在附图中示出。下面通过参考附图描述的实施例是示例性的，旨在用于解释本申请，而不能理解为对本申请的限制。
本申请是基于发明人对以下事实和问题的发现和认识作出的：
发明人发现，目前利用弯曲角度较大的透明基板制作电子设备的壳体时，存在透明基板和外观膜片难以贴合等问题。目前，由于聚对苯二甲酸乙二醇酯膜片(PET膜片) 质地较硬，比较耐刮，因此，在利用透明基板+外观膜片的方式制作电子设备外壳时，通常采用PET膜片作为外观膜片的基材，并在PET膜片上转印纹理层、电镀金属层以及印刷油墨层等，使该外观膜片具有丰富的外观效果，然后将该外观膜片与透明基板进行贴合。但是，上述方法制作的电子设备外壳中，透明基板的弯曲角度通常较小，例如常用的3D玻璃盖板，其弯曲程度比较有限，外观膜片在贴合过程中，PET膜片和位于PET膜片上的叠层材料(例如前面所述的纹理层、金属层、油墨层等)均不会受到明显拉伸，所以前面所述的以PET膜片作为基材的外观膜片可以较好地和透明基板贴合，实现较好的外观。但是，将PET膜片贴合到弯曲角度较大的透明基板上时，由于PET膜片的弹性模量在4000Mpa以上，材质较硬，柔韧性较差，因此，较难贴合在四边弯曲弧度都超过30°的玻璃后盖上，贴合过程中容易出现气泡以及叠层材料破裂等，影响壳体的外观表现力，从而限制了大角度弯曲的玻璃材料等在电子设备壳体中的应用。因此，如果能够提出一种新的壳体组件，外观膜片和大角度弯曲的壳体基体可以紧密贴合，并且该壳体组件具有良好的外观效果，将能在很大程度上解决上述问题。
本申请旨在至少在一定程度上解决相关技术中的技术问题之一。
在本申请的一个方面，本申请提出了一种壳体组件。根据本申请的实施例，参考图1，该壳体组件1000包括：壳体基体100以及外观膜片200，外观膜片200设置在壳体基体100的一侧。参考图1以及图2，壳体基体100具有一个底面110，以及和底面110相连的侧壁120(侧壁120可以为相对设置的2个，也可以为图2中所示出的彼此相连的4个侧壁120)，侧壁120与底面110之间的折弯角大于70度(参考图1中所示出的折弯角a)。参考图3(图1中M区域的截面示意图)，外观膜片200包括：软质衬底210以及镜面银层230，镜面银层230设置在软质衬底210的一侧，其中，软质衬底210的弹性模量为800～2000MPa。由此，该软质衬底210的弹性模量较小，该软质衬底的柔韧性较好，该壳体组件1000具有较大的弧度，且外观膜片200和壳体基体100之间贴合紧密；该壳体组件1000的外观效果良好，无需进行金属镀膜，通过该镜面银层230即可实现金属光泽效果，并且能提高壳体组件1000的亮度，产品表现力强。
需要特别说明的是，本申请中的术语“折弯角”，特指侧壁120与底面110之间夹角(如图1中所示出的角a)，具体地，底面110可以是曲面也可以是平面，具体地，折弯角为侧壁和底面所在平面之间的夹角。当侧壁120的外表面(远离外观膜片200一侧的表面)为平面时，该折弯角为侧壁120外表面所在平面与底面110之间的夹角。当侧壁120的外表面为曲面时，该侧壁120和底面110的折弯角为该侧壁的曲面上任意一点的切线，与底面110所在平面之间夹角的最大值。当底面110为曲面时，侧壁与底面之间的夹角可以为侧壁和底面的切平面之间的夹角。如前所述，壳体基体100可具有 4个侧壁120，4个侧壁120和底面110之间的折弯角可以全部相等，也可以不全部相等。例如，4个侧壁中，相对设置的两个侧壁与底面之间的折弯角可以相等，相邻的两个侧壁与底面之间的折弯角可以不相等。
为了方便理解，下面对根据本申请实施例的壳体组件能获得上述有益效果的原理作简单说明：
如前所述，采用透明玻璃基板，并贴设具有颜色、图案的外观膜片的方式制作的电子设备外壳，由于玻璃基板的弯曲角度较小，现有的PET膜片即可和该玻璃基板紧密贴合，实现较好的外观。但是，当壳体基体(例如玻璃)弯曲角度较大时，由于PET膜片刚性较大，延展性较差，难以和大角度弯曲(例如折弯角大于30度)的壳体基体贴合。而根据本申请的实施例的壳体组件，利用弹性模量较小(弹性模量为800～2000MPa)的软质衬底作为外观膜片的基材，该软质衬底的柔韧性较好，可以和大角度弯曲的壳体基体紧密贴合，不会出现气泡等问题。并且，发明人还通过深入研究发现，由于该软质衬底较软，通过目前常用的金属镀膜的方法在该软质衬底上形成镀膜层(实现壳体组件的金属光泽效果)时，镀膜层的材质(通常为金属氧化物)硬且脆，镀膜层和该软质衬底的结合力较差，并且将该外观膜片贴合在弯曲角度较大的衬底上时，该镀膜层容易破裂，影响壳体组件的外观效果。而根据本申请实施例的壳体组件中，在软质衬底远离壳体基体的一侧设置镜面银层，该镜面银层制作工艺简单，例如可以通过丝印等方法形成，从而无需通过金属镀膜，利用该镜面银层即可实现壳体组件的金属光泽效果，可以提高壳体组件的亮度以及产品表现力；且镜面银层以及软质衬底的结合力较强，将该外观膜片和弯曲角度较大的壳体基体贴合后，该镜面银层不易破裂，产品良率较高，且外观效果良好。
根据本申请的实施例，壳体基体100的具体类型不受特别限制，例如可以为玻璃等。具体地，底面110可以是曲面也可以是平面。具体的，参考图1以及图2，壳体基体100具有一个底面110，以及和底面110相连的侧壁120，具体的，壳体组件100可以具有环绕底面110且彼此相连的4个侧壁120，侧壁120与底面110之间的折弯角大于70度(参考图1中所示出的折弯角a)，例如，侧壁120与底面110之间的折弯角a可以为80度，可以为90度，可以为100度，可以为120度，可以为130度等，即，该壳体基体100的侧壁120可以和底面110垂直(即折弯角a为90度)，还可以向壳体基体100的内部折弯(即折弯角a大于90度)。并且，该壳体基体100的四个侧壁120均可以具有较大的折弯角，因此，该壳体基体100可以具有丰富的外观，可以提升产品表现力。
根据本申请的实施例，软质衬底210的具体类型不受特别限制，只要其柔韧性较好 即可。具体的，软质衬底210的弹性模量可以为800～2000MPa，例如可以为1000MPa，可以为1200MPa，可以为1500MPa，可以为1800MPa等。由此，相比于弹性模量高达4000Mpa的PET膜，该软质衬底的柔韧性更好，延展性能较好，且具有较好的曲面适应性，便于贴合在四边弯曲弧度较大的玻璃上，贴合紧密，形成的壳体组件的外观效果良好。具体的，形成软质衬底210的材料可以包括热塑性聚氨酯(TPU)、聚氯乙烯(PVC)、热塑性弹性体的至少之一，热塑性弹性体可以为以聚苯乙烯为末端段、以聚丁二烯加氢得到的乙烯-丁烯共聚物为中间弹性嵌段的线性三嵌共聚物(SEBS)，可以为以聚苯乙烯为末端段、聚异戊二烯加氢得到的乙烯-异戊二烯共聚物为中间弹性嵌段的线性三嵌共聚物(SEPS)等。具体地，可以是热可塑性聚氨酯等。具体地，软质衬底210的厚度可以为80～100μm，例如可以为85μm，可以为90μm，可以为95μm等。软质衬底210的厚度在上述范围时，可以较好地贴合在大角度弯曲的壳体基体100上。
根据本申请的实施例，参考图4，该外观膜片200可以进一步包括颜色层220，颜色层设置在软质衬底和镜面银层之间，即：颜色层220可以设置在软质衬底210的一侧，镜面银层230设置在颜色层220远离软质衬底210的一侧。由此，该颜色层220可以增强软质衬底210和镜面银层230之间的结合力，将该外观膜片200和弯曲角度较大的壳体基体100贴合后，该镜面银层230不易破裂，产品良率较高，且外观效果良好。具体的，颜色层220可以是在软质衬底210的一侧丝印颜色油墨形成的。具体地，颜色层220的颜色不受特别限制，本领域技术人员可以根据需要实现的色彩效果进行选择，例如可以为蓝色、紫色、黑色、白色、红色、粉色等。具体的，颜色层220的光透过率可以为30％～70％，例如可以为35％，可以为50％，可以为65％等。由此，具有该透过率范围的颜色层220，可以和镜面银层230等形成叠加的外观效果，可以使壳体组件1000同时具有色彩以及金属光泽效果，且壳体组件1000的亮度高，产品表现力强。需要说明的是，参考图4，在壳体组件1000中，颜色层220设置在软质衬底210远离壳体基体100的一侧，镜面银层230设置在颜色层220远离软质衬底210的一侧，该壳体组件1000用于电子设备(例如手机外壳)中时，壳体基体100为朝向用户的一侧，镜面银层230设置在靠近电子设备内部的一侧，因此，为了使用户能够从壳体基体100一侧，观察到颜色层220和镜面银层230的叠加效果，颜色层220的透过率可以为30％～70％，即颜色层220可以是半透明的，由此，该颜色层220不仅具有颜色效果，还可以透出镜面银层230的金属光泽效果，进一步提高了该壳体组件1000的外观效果。
具体地，颜色层220的厚度可以为4～12μm，例如可以为5μm，可以为7μm，可以为9μm，可以为11μm等。具有该厚度范围的颜色层220，其光透过率比较适中，可以使壳体组件1000同时具有色彩以及金属光泽效果，外观效果较好。当颜色层220的厚 度过小(例如小于4μm)时，颜色效果不明显；当颜色层220的厚度过大(例如大于12μm)时，会导致颜色层220的光透过率降低，从而影响壳体组件1000整体的外观效果。
根据本申请的实施例，参考图4，镜面银层230设置在颜色层220远离软质衬底210的一侧，镜面银层230可以是通过丝印镜面银油墨的方法形成的。具体地，镜面银层230的厚度可以为2～8μm，例如可以为3μm，可以为5μm，可以为7μm等。由此，镜面银层230的厚度在上述范围时，可以使壳体组件1000具有较好的金属光泽效果，并且可以使壳体组件1000的亮度较高，进一步提高了壳体组件1000的外观效果。如果镜面银层230的厚度过小(例如小于2μm)，则镜面银层230的金属效果不明显；如果镜面银层230的厚度过大(例如大于8μm)，则生产成本较高，并且对金属光泽效果的提升不显著。
具体地，壳体组件1000的亮度L值可以为60～80。由此，该壳体组件1000的亮度L值较大，亮度较好，外观效果较好，产品表现力强。需要说明的是，亮度L值范围在0～100中，L值越大，亮度越亮(白)，L值越小，亮度越暗(黑)。
根据本申请的实施例，参考图5，外观膜片200可以进一步包括纹理层240，纹理层240可以设置在颜色层220和镜面银层230之间。由此，该纹理层240可以和镜面银层230叠加，实现丰富的金属炫光效果，进一步丰富了该壳体组件1000的外观效果。具体地，纹理层240的厚度可以为6～12μm，例如可以为7μm，可以为9μm，可以为11μm等。具有该厚度范围的纹理层240，可以较好地与镜面银层230叠加，形成金属炫光效果较佳的壳体组件。
根据本申请的实施例，参考图6，外观膜片200可以进一步包括盖底层250，盖底层250设置在镜面银层230远离颜色层220的一侧，盖底层250的光透过率不大于1％。由此，该外观膜片200和壳体基体100贴合，并将其用于电子设备等的壳体时，外观膜片200是朝向电子设备内部的，进一步地，外观膜片200的盖底层250靠近电子设备内部设置，该盖底层240可以遮挡电子设备内部的元件等，进一步提高该壳体组件1000的使用性能。具体地，可以在镜面银层230远离纹理层240的一侧印刷盖底油墨，例如黑色油墨、白色油墨等，形成盖底层250。具体地，盖底层250的厚度可以为20～30μm，例如可以为21μm，可以为23μm，可以为25μm，可以为27μm，可以为29μm等。由此，当盖底层250的厚度在上述范围时，可以较好地遮挡电子设备内部的元件，进一步提高该壳体组件1000的使用性能，提高外观效果。如果盖底层的厚度过小(例如小于20μm)，遮光效果较差；如果盖底层的厚度过高(例如高于30μm)，盖底层脆性高，附着力较差。
综上可知，根据本申请实施例的壳体组件，该软质衬底210的弹性模量较小，该软质衬底的柔韧性较好，该壳体组件1000具有较大的弧度，且外观膜片200和壳体基体100之间贴合紧密；该壳体组件1000的外观效果良好，通过该镜面银层230即可实现金属炫光效果，无需进行金属镀膜，产品表现力强。
在本申请的另一方面，本申请提出了一种制备壳体组件的方法。根据本申请的实施例，该方法制备的壳体组件可以是前面所述的，由此，该方法所制备的壳体组件具有前面所述的壳体组件所具有的全部特征以及有益效果，在此不再赘述。总的来说，该方法制得的壳体组件可以具有较大的弧度，且外观膜片和壳体基体之间贴合紧密，该壳体组件的外观效果良好，且无需进行金属镀膜，即可实现金属炫光效果，产品表现力强。
根据本申请的实施例，参考图7，该方法包括：
S100：提供壳体基体
在该步骤中，提供壳体基体。根据本申请的实施例，壳体基体可以为前面所述的，例如壳体基体可以是玻璃材料的，壳体基体具有一个底面，以及和底面相连的侧壁，侧壁与底面之间的折弯角大于70度等。
S200：形成外观膜片，将外观膜片贴合在壳体基体的一侧
在该步骤中，形成外观膜片，并将外观膜片贴合在壳体基体的一侧。根据本申请的实施例，参考图8，该方法进一步包括：
S210：提供软质衬底
在该步骤中，提供软质衬底。根据本申请的实施例，软质衬底可以是前面所述的，例如形成软质衬底的材料可以包括热塑性聚氨酯、聚氯乙烯、热塑性弹性体的至少之一；软质衬底的弹性模量可以为800～2000MPa，由此，软质衬底的弹性模量在上述范围时，其柔韧性较好，适于贴合在弯曲角度较大的壳体基体上，贴合紧密，不易产生气泡，提高了所制备的壳体组件的外观效果；具体的，软质衬底的厚度可以为80～100μm等，软质衬底的厚度在上述范围时，可以较好地贴合在大角度弯曲的壳体基体上。
S220：在软质衬底的一侧形成颜色层
在该步骤中，在前面步骤中所述的软质衬底的一侧形成颜色层。根据本申请的实施例，可以在软质衬底的一侧丝印颜色油墨组合物，以便形成颜色层。由此，可以在软质衬底上形成丰富的色彩效果。具体地，具体的，颜色油墨组合物可以根据颜色需求调配，颜色油墨组合物可以包括颜色油墨、第一固化剂以及第一稀释剂，根据本申请的实施例，颜色油墨的颜色不受特别限制，具体的，颜色油墨可以为黑色、白色，粉色，金色，银色、淡蓝色、紫色、红色等。具体的，颜色油墨组合物中，第一固化剂的含量可以为5％～30％，第一稀释剂的含量可以为5％～20％。由此，便于对颜色层的颜色、光透过率 等进行调节，得到需要的色彩效果。
具体地，可以将颜色油墨组合物倒置在自动丝印机的丝印网板上，通过刮胶将颜色油墨组合物印刷在软质衬底(例如热塑性聚氨酯(TPU)膜)上，印刷的网板目数可以在280～420目(网板目数即一英寸网板上的孔数，网板目数越大，精细度越高)。
具体地，形成的颜色层的光透过率可以为30％～70％。由此，具有该透过率范围的颜色层，可以和后面步骤中形成的镜面银层等形成叠加的外观效果，可以使壳体组件同时具有色彩以及金属光泽效果，且制备的壳体组件的亮度高，产品表现力强。具体地，颜色层的厚度可以为4～12μm。由此，进一步提高了该壳体组件的外观效果。
根据本申请的实施例，参考图9，在形成颜色层之后，该方法可以进一步包括：
S240：在颜色层远离软质衬底的一侧形成纹理层
在该步骤中，在颜色层远离软质衬底的一侧形成纹理层。根据本申请的实施例，可以通过UV转印形成纹理层。如前所述，为了获得炫光效果，可以在软质衬底(例如热塑性聚氨酯(TPU))表面加工出各种纹理，该纹理层可以和后面步骤中形成的镜面银层相互叠加，实现丰富的金属炫光效果。具体地，可以将UV胶点胶在光学纹理模具(母版)上，然后盖上软质衬底(例如热塑性聚氨酯(TPU)基材)，将热塑性聚氨酯(TPU)基材贴在母版上，硅胶压辊以0.1～3Mpa的压力加压，挤压贴合后一起固化，待UV胶固化后脱去模具，将纹理模具(母版)与热塑性聚氨酯(TPU)基材分离，UV胶留在热塑性聚氨酯(TPU)基材上，从而得到需要的纹理。具体地，UV转印的UV固化能量可以为1000～1500mj/cm 2，例如可以为1200mj/cm 2，可以为1300mj/cm 2，可以为1400mj/cm 2等。具体地，纹理层的厚度可以为6～12μm。由此，具有该厚度范围的纹理层，可以较好地与镜面银层叠加，形成形成炫光效果较佳的壳体组件。
S230：在颜色层远离软质衬底的一侧形成镜面银层
在该步骤中，在前面步骤中形成的颜色层远离软质衬底的一侧，或者在前面步骤中形成的纹理层远离颜色层的一侧，形成镜面银层。根据本申请的实施例，形成镜面银层的方法以及形成的镜面银层可以和前面描述的相同，在此不再赘述。例如，可以通过丝印镜面银油墨的方法形成镜面银层，该方法操作简单，便于控制，进一步丰富了所制备的壳体组件的外观效果。具体地，可以通过丝印法将镜面银油墨组合物印刷在纹理层远离颜色层的一侧。具体的，镜面银油墨组合物的组成成分不受特别限制，镜面银油墨组合物可以包括镜面银油墨、第二固化剂以及第二稀释剂，其中，第二固化剂的含量可以为1％～10％，第二稀释剂的含量可以为2％～5％。由此，形成的镜面银层具有较佳的金属光泽效果，制备的壳体组件的亮度较高，外观效果良好，产品表现力强。例如，壳体组件的亮度L值可以为60～80。具体地，可以将镜面银油墨组合物倒置在自动丝印机的 丝印网板上，通过刮胶将镜面银油墨印刷在纹理层上，镜面银油墨可以使用市购的油墨，网板目数(一英寸网板的孔数，目数越大精细度越好)可以在280～420目。具体地，形成的镜面银层的厚度可以为2～8μm，具有该厚度范围的镜面银层可以使制备的壳体组件具有较佳的金属炫光效果，并且亮度较高。
根据本申请的实施例，参考图10，在形成镜面银层之后，该方法可以进一步包括以下步骤：
S250：在镜面银层远离纹理层的一侧印刷盖底油墨，形成盖底层
在该步骤中，在镜面银层远离纹理层的一侧印刷盖底油墨，形成盖底层。根据本申请的实施例，盖底层可以是前面所述的，例如盖底层的光透过率不大于1％；盖底层的厚度可以为20～30μm。具体的，可以在镜面银层远离纹理层的一侧，多次印刷盖底油墨(一次印刷形成的盖底层厚度太厚，脆性较高，附着力较差，使用性能不佳)，例如黑色油墨、白色油墨等，形成盖底层。由此，通过往复涂多次印刷盖底油墨并固化的方法形成盖底层，可以进一步防止盖底层漏光，进一步提高了制备的壳体组件的使用性能。具体的，每次印刷后形成的盖底层的厚度可以是5～8μm，多次印刷的总厚度可以为20～30μm。具有该厚度范围的盖底层具有较佳的遮光效果和附着力，并且可以保护丝印的镜面银层不被腐蚀。具体地，印刷盖底油墨时的网板目数可以是350～420目。综上可知，该方法制得的壳体组件，具有较大的弧度，且外观膜片和壳体基体之间贴合紧密，该壳体组件的外观效果良好，且无需进行金属镀膜，即可实现金属炫光效果，产品表现力强。
在本申请的又一个方面，本申请提出了一种电子设备。根据本申请的实施例，参考图11，该电子设备1100包括：前面所述的壳体组件1000或前面所述的方法所制备的壳体组件、主板以及存储器、屏幕(图中未示出)，壳体组件1000限定出容纳空间，壳体组件1000的外观膜片(图中未示出)朝向电子设备的内部设置，主板以及存储器位于容纳空间内部，屏幕设置在壳体组件1000的顶部且与主板相连。由此，该电子设备1100具有前面所述的壳体组件1000或前面所述的方法所制备的壳体组件所具有的全部特征以及优点，在此不再赘述。总的来说，该电子设备1100外观效果良好，产品表现力强。
示例性的，电子设备可以为移动或便携式并执行无线通信的各种类型的计算机***设备中的任何一种。具体的，电子设备可以为移动电话或智能电话(例如，基于iPhone TM，基于Android TM的电话)，便携式游戏设备(例如Nintendo DS TM，PlayStation Portable TM，Gameboy Advance TM，iPhone TM)、膝上型电脑、PDA、便携式互联网设备、音乐播放器以及数据存储设备，其他手持设备以及诸如手表、入耳式耳机、吊坠、 头戴式耳机等，电子设备还可以为其他的可穿戴设备(例如，诸如电子眼镜、电子衣服、电子手镯、电子项链、电子纹身、电子设备或智能手表的头戴式设备(HMD))。
电子设备还可以是多个电子设备中的任何一个，多个电子设备包括但不限于蜂窝电话、智能电话、其他无线通信设备、个人数字助理、音频播放器、其他媒体播放器、音乐记录器、录像机、照相机、其他媒体记录器、收音机、医疗设备、车辆运输仪器、计算器、可编程遥控器、寻呼机、膝上型计算机、台式计算机、打印机、上网本电脑、个人数字助理(PDA)、便携式多媒体播放器(PMP)、运动图像专家组(MPEG-1或MPEG-2)音频层3(MP3)播放器，便携式医疗设备以及数码相机及其组合。
在一些情况下，电子设备可以执行多种功能(例如，播放音乐，显示视频，存储图片以及接收和发送电话呼叫)。如果需要，电子设备可以是诸如蜂窝电话、媒体播放器、其他手持设备、腕表设备、吊坠设备、听筒设备或其他紧凑型便携式设备的便携式设备。
以上详细描述了本申请的实施方式，但是，本申请并不限于上述实施方式中的具体细节，在本申请的技术构思范围内，可以对本申请的技术方案进行多种简单变型，这些简单变型均属于本申请的保护范围。另外需要说明的是，在上述具体实施方式中所描述的各个具体技术特征，在不矛盾的情况下，可以通过任何合适的方式进行组合。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
尽管上面已经示出和描述了本申请的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本申请的限制，本领域的普通技术人员在本申请的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (28)

  1. 一种壳体组件，其特征在于，包括：
    壳体基体，所述壳体基体具有一个底面，以及和所述底面相连的侧壁，所述侧壁与所述底面之间的折弯角大于70度；以及
    外观膜片，所述外观膜片设置在所述壳体基体的一侧，所述外观膜片包括：
    软质衬底；
    以及
    镜面银层，所述镜面银层设置在所述软质衬底的一侧，其中，
    所述软质衬底的弹性模量为800～2000MPa。
  2. 根据权利要求1所述的壳体组件，其特征在于，所述软质衬底包括热塑性聚氨酯、聚氯乙烯、热塑性弹性体的至少之一。
  3. 根据权利要求1或2所述的壳体组件，其特征在于，所述软质衬底的厚度为80～100μm。
  4. 根据权利要求1-3任一项所述的壳体组件，其特征在于，进一步包括：
    颜色层，所述颜色层设置在所述软质衬底和所述镜面银层之间，所述颜色层的光透过率为30％～70％。
  5. 根据权利要求4所述的壳体组件，其特征在于，所述颜色层的厚度为4～12μm。
  6. 根据权利要求1-5任一项所述的壳体组件，其特征在于，所述镜面银层的厚度为2～8μm。
  7. 根据权利要求4-6任一项所述的壳体组件，其特征在于，所述外观膜片进一步包括：
    纹理层，所述纹理层设置在所述颜色层和所述镜面银层之间。
  8. 根据权利要求7所述的壳体组件，其特征在于，所述纹理层的厚度为6～12μm。
  9. 根据权利要求4-8任一项所述的壳体组件，其特征在于，所述外观膜片进一步包括：
    盖底层，所述盖底层设置在所述镜面银层远离所述颜色层的一侧，所述盖底层的光透过率不大于1％。
  10. 根据权利要求9所述的壳体组件，其特征在于，所述盖底层的厚度为20～30μm。
  11. 根据权利要求1-10任一项所述的壳体组件，其特征在于，所述壳体组件的亮度L值为60～80。
  12. 一种制备壳体组件的方法，其特征在于，包括：
    提供壳体基体，所述壳体基体具有一个底面，以及和所述底面相连的侧壁，所述侧壁与所述底面之间的折弯角大于70度；以及
    形成外观膜片，并将所述外观膜片贴合在所述壳体基体的一侧，其中，所述形成外观膜片进一步包括：
    提供软质衬底；
    在所述软质衬底的一侧形成镜面银层，其中，
    所述软质衬底的弹性模量为800～2000MPa。
  13. 根据权利要求12所述的方法，其特征在于，所述软质衬底包括热塑性聚氨酯、聚氯乙烯、热塑性弹性体的至少之一。
  14. 根据权利要求12或13所述的方法，其特征在于，所述软质衬底的厚度为80～100μm。
  15. 根据权利要求12-14任一项所述的方法，其特征在于，所述形成镜面银层之前，所述方法进一步包括：在所述软质衬底的一侧形成颜色层，所述形成颜色层包括：
    在所述软质衬底的一侧丝印颜色油墨组合物，以便形成所述颜色层。
  16. 根据权利要求15所述的方法，其特征在于，所述颜色层的厚度为4～12μm。
  17. 根据权利要求15或16所述的方法，其特征在于，所述颜色层的光透过率为30％～70％。
  18. 根据权利要求15-17任一项所述的方法，其特征在于，所述颜色油墨组合物包括颜色油墨、第一固化剂以及第一稀释剂，其中，所述第一固化剂的含量为5％～30％，所述第一稀释剂的含量为5％～20％。
  19. 根据权利要求15-18任一项所述的方法，其特征在于，所述形成颜色层之后，所述形成镜面银层之前，所述方法进一步包括：
    在所述颜色层远离所述软质衬底的一侧形成纹理层。
  20. 根据权利要求19所述的方法，其特征在于，形成的所述纹理层的厚度为6～12μm。
  21. 根据权利要求19或20所述的方法，其特征在于，所述形成纹理层包括：通过UV转印形成所述纹理层，所述UV转印的UV固化能量为1000～1500mj/cm 2。
  22. 根据权利要求19-21任一项所述的方法，其特征在于，所述形成镜面银层包括：
    通过丝印法将镜面银油墨组合物印刷在所述纹理层远离所述颜色层的一侧。
  23. 根据权利要求22所述的方法，其特征在于，形成的所述镜面银层的厚度为2～8μm。
  24. 根据权利要求22或23所述的方法，其特征在于，所述镜面银油墨组合物包括镜面银油墨、第二固化剂以及第二稀释剂，其中，所述第二固化剂的含量为1％～10％，所述第二稀释剂的含量为2％～5％。
  25. 根据权利要求19-24任一项所述的方法，其特征在于，所述形成镜面银层之后，进一步包括：
    在所述镜面银层远离所述纹理层的一侧印刷盖底油墨，以便形成盖底层，所述盖底层的光透过率不大于1％。
  26. 根据权利要求25所述的方法，其特征在于，形成的所述盖底层的厚度为20～30μm。
  27. 根据权利要求25或26所述的方法，其特征在于，所述形成盖底层进一步包括：在所述镜面银层远离所述纹理层的一侧，多次印刷所述盖底油墨，每次印刷后形成的所述盖底层的厚度为5～8μm。
  28. 一种电子设备，其特征在于，包括：
    权利要求1～11任一项所述的壳体组件或权利要求12～27任一项所述的方法所制备的壳体组件，所述壳体组件限定出容纳空间，所述壳体组件的外观膜片朝向所述电子设备的内部设置；
    主板以及存储器，所述主板以及存储器位于所述容纳空间内部；以及
    屏幕，所述屏幕设置在所述壳体组件的顶部且与所述主板相连。
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