WO2018201348A1 - 移动终端壳体、制备方法以及移动终端 - Google Patents

移动终端壳体、制备方法以及移动终端 Download PDF

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Publication number
WO2018201348A1
WO2018201348A1 PCT/CN2017/082907 CN2017082907W WO2018201348A1 WO 2018201348 A1 WO2018201348 A1 WO 2018201348A1 CN 2017082907 W CN2017082907 W CN 2017082907W WO 2018201348 A1 WO2018201348 A1 WO 2018201348A1
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WIPO (PCT)
Prior art keywords
layer
mobile terminal
color
vacuum coating
coating layer
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Ceased
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PCT/CN2017/082907
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English (en)
French (fr)
Inventor
李晓明
杨光明
丁文峰
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Priority to PCT/CN2017/082907 priority Critical patent/WO2018201348A1/zh
Publication of WO2018201348A1 publication Critical patent/WO2018201348A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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

Definitions

  • the present invention relates to the field of communication devices, and in particular, to a mobile terminal housing, a preparation method, and a mobile terminal.
  • a non-metallic substrate may be used to obtain a metallic appearance by a surface treatment in the later stage, in order to achieve the effect of a metal-like sandblasting texture and a high-gloss edge.
  • the inventors have found that when a mobile terminal housing having a metallic appearance is prepared based on a substrate of a non-metal material, there is a problem that the preparation process is complicated and the appearance of the metal texture is unsatisfactory.
  • the inventors have conducted in-depth research and a large number of experiments and found that this is mainly due to the current use of non-metallic materials in the matrix, in the preparation of metal-like shells, the coating used to form high-bright edge effect and the coating to achieve metal blasting effect.
  • the settings are unreasonable, resulting in a high-gloss edge and metal blasting texture in the final product. Therefore, the difference between the high-brightness edge and the metal blasting texture is not obvious, and it is impossible to truly achieve two kinds of gloss.
  • the present invention is directed to at least someeviating or solving at least one of the above mentioned problems.
  • the present invention provides a mobile terminal housing including: a base; a vacuum coating layer, the vacuum coating layer is disposed on the base; a color layer, The color layer is disposed on a surface of the vacuum coating layer away from the side of the substrate, and the color layer covers a portion of the surface of the vacuum coating layer.
  • the substrate is formed of plastic. Therefore, the performance of the mobile terminal housing can be further improved.
  • the vacuum coating layer is formed of a metal material.
  • the metal texture of the mobile terminal housing is formed of a metal material.
  • the metal material comprises at least one of indium and an indium tin alloy.
  • a primer layer disposed between the substrate and the vacuum coating layer
  • a middle lacquer layer the intermediate lacquer layer disposed at Between the vacuum coating layer and the color layer
  • a topcoat layer the topcoat layer is disposed on a surface of the color layer away from the side of the vacuum coating layer.
  • the primer layer comprises 15-25% by weight of ethyl propionate, 65-75% by weight of polyurethane resin and 5-15% by weight of acrylic acid.
  • the intermediate lacquer layer comprises 15-25% by weight of ethyl propionate, 65-75% by weight of polyurethane resin and 5-15% by weight of acrylic acid.
  • the color layer is a matte color layer or a ceramic color layer.
  • the color layer comprises 15-25 wt% alkyd resin, 35-45 wt% acrylic resin, 5-15 wt% epoxy resin, 3-7 wt% resin coated aluminum flakes, 8-12 wt% benzene. Ether and 10-20 wt% butanone. Thereby, the performance of the mobile terminal housing can be further improved.
  • the invention provides a method of preparing a mobile terminal housing as described above, the method comprising: forming a vacuum coating layer on a substrate; and a side of the vacuum coating layer away from the substrate A color layer is formed on the surface, the color layer covering a part of the surface of the vacuum coating layer.
  • the method can improve production efficiency, achieve more realistic imitation metal sandblasting texture and high-light side effect, and reduce cost.
  • the vacuum coating layer is formed by a non-conductive vacuum plating process using a metal material.
  • the appearance of the bright side of the metal can be realized by the vacuum coating layer, which is advantageous for improving the gloss of the bright side of the metal of the mobile terminal housing.
  • the non-conductive vacuum plating treatment has a working vacuum of 5.0 ⁇ 10 -2 Pa, a coating vacuum of 8.0 ⁇ 10 -1 Pa, an evaporation power of 10-12 kw, and a plating time of 8-10 s. .
  • the performance of the mobile terminal housing can be further improved.
  • the color layer is formed by applying a color paint layer on a surface of the vacuum coating layer away from the side of the substrate; and performing laser engraving on the color paint layer Removing the color lacquer layer of the predetermined area to form the color layer and exposing the vacuum coating layer of the predetermined area.
  • the time and laser area of the laser engraving process can be reduced, and the production efficiency can be improved and the cost can be reduced.
  • the laser lacquering process removes the color lacquer layer, the vacuum coating layer for realizing the metal bright side and the color lacquer layer for realizing the matte effect do not share the top lacquer, thereby realizing a more realistic imitation metal blasting texture. With a high-gloss side effect.
  • the method further includes at least one of the following steps: pre-forming a primer layer on the substrate before forming the vacuum coating layer; before forming the color layer, in advance a vacuum coating layer on a surface away from the side of the substrate to form a middle lacquer layer; and after forming the color layer, away from the color layer On the surface on one side of the substrate, a topcoat layer is formed.
  • pre-forming a primer layer on the substrate before forming the vacuum coating layer before forming the color layer, in advance a vacuum coating layer on a surface away from the side of the substrate to form a middle lacquer layer
  • a topcoat layer is formed.
  • the color layer is formed by applying a color lacquer layer on a surface of the vacuum coating layer away from the side of the substrate; the color lacquer layer is away from the vacuum Applying a topcoat layer on a surface of one side of the coating layer; performing a laser engraving treatment on the topcoat layer and the color lacquer layer to remove the topcoat layer and the color lacquer layer of a predetermined area to utilize the color A lacquer layer forms the color layer and exposes the vacuum coating layer of the predetermined area.
  • the laser engraving time and the laser area can be reduced, the production efficiency can be improved, the cost can be reduced, and the more realistic imitation metal blasting texture and high-brightness edge effect can be realized.
  • the laser engraving process has a frequency of 8000-20000 Hz, an emission time of 55 ⁇ s, a filling method of single-line filling, a spacing between single lines of 0.05 mm, and a scanning speed of 900-1000 mm/s.
  • the performance of the mobile terminal housing can be further improved.
  • the present invention provides a mobile terminal.
  • the mobile terminal comprises a mobile terminal housing as described above. Therefore, the mobile terminal has all the features and advantages of the mobile terminal housing described above, and details are not described herein again.
  • the mobile terminal is a mobile phone. Therefore, the mobile phone has all the features and advantages of the mobile terminal described above, and details are not described herein again.
  • the mobile terminal housing is a back shell of the mobile phone. Therefore, the back shell of the mobile phone has all the features and advantages of the mobile terminal housing described above, and details are not described herein.
  • FIG. 1 shows a partial structural intent of a mobile terminal housing in accordance with one embodiment of the present invention
  • FIG. 2 shows the structural intent of a mobile terminal housing in accordance with one embodiment of the present invention
  • FIG. 3 is a partial flow chart showing a method of preparing a mobile terminal housing according to an embodiment of the present invention
  • FIG. 4 is a flow chart showing a method of preparing a mobile terminal housing according to an embodiment of the present invention
  • FIG. 5 is a partial flow chart showing a method of manufacturing a mobile terminal housing according to an embodiment of the present invention
  • FIG. 6 is a partial flow chart showing a method of preparing a mobile terminal housing according to another embodiment of the present invention.
  • FIG. 7 shows a schematic structural diagram of a mobile terminal according to an embodiment of the present invention.
  • the present invention provides a mobile terminal housing.
  • the mobile terminal housing includes a base 100, a vacuum coating layer 200, and a color layer 300.
  • the vacuum coating layer 200 is disposed on the substrate 100, and the color layer 300 is disposed on a surface of the vacuum coating layer 200 away from the substrate 100, and the color layer 300 covers a portion of the surface of the vacuum coating layer 200.
  • the vacuum evaporation layer 200 may be formed of a vacuum-deposited metal material to provide a high-bright edge effect to the mobile terminal housing, and the color layer 300 may obtain a metal-like sandblasting texture by adjusting the color lacquer forming the color layer 300. Or a ceramic texture.
  • the color layer 300 covers a part of the surface of the vacuum coating layer 200, whereby the mobile terminal housing can be adjusted by adjusting the arrangement position of the color layer 300, such as the coverage area and the shape of the color layer 300, and the like.
  • the color layer 300 forms a matte effect.
  • the position not covered by the color layer 300 can expose the vacuum coating layer 200, thereby obtaining the effect of metallic highlights.
  • the coverage position of the color layer 300 can be controlled, and the vacuum coating layer 200 is exposed in a predetermined area to form a high-bright edge or a metal logo pattern.
  • the mobile terminal housing can realize a more realistic imitation metal sandblasting texture and a metallic highlight effect, and the obtained matte effect is more remarkable.
  • the specific type of the above-described base 100 is not particularly limited as long as the design requirements of the mobile terminal housing can be satisfied.
  • it can be a plastic material.
  • the vacuum coating layer 200 is formed of a metal material.
  • the visual effect of the metal highlight can be formed by the vacuum plating layer 200.
  • the specific formation manner of the vacuum coating layer 200 is not particularly limited.
  • the substrate 100 may be utilized, including but not limited to non-conductive vacuum evaporation (NCVM).
  • NCVM non-conductive vacuum evaporation
  • the vapor deposition metal target is formed.
  • the metal material forming the vacuum vacuum coating layer 200 is the metal target used in the NCVM.
  • the specific type of the metal target is not particularly limited, and according to an embodiment of the present invention, the metal material includes at least one of indium and indium tin alloy.
  • the vacuum coating layer 200 when the vacuum coating layer 200 is prepared using the above metal material, it does not adversely affect the signal transmission function of the mobile terminal housing.
  • the vacuum plating layer 200 may be formed using indium having a purity of 99.99 wt%, and the evaporation quality may be 3.5 to 4.0 g.
  • the inventors have found through extensive experiments that when the mass of the vapor-deposited metal material is within the above range, the formed vacuum coating layer 200 has a good metallic luster.
  • the vacuum coating layer 200 formed by the vapor deposition quality within the above range may have a relatively appropriate thickness so as not to be too thick due to the thickness of the vacuum coating layer 200.
  • the waste of the target does not affect the metallic feel of the vacuum coating layer 200 due to insufficient thickness of the vacuum coating layer 200.
  • the mobile terminal housing may further include a primer layer 400 according to an embodiment of the present invention.
  • the primer layer 400 is disposed between the substrate 100 and the vacuum coating layer 200.
  • the primer layer 400 can cover the surface of the substrate 100 and enhance the adhesion of the vacuum coating 200 to function as a carrier of the vacuum coating layer 200. Thereby, the durability of the mobile terminal casing can be improved, and the vacuum coating layer can be prevented from peeling off during use.
  • the material forming the primer layer 400 described above is not particularly limited as long as it can cover the surface flaw of the substrate 100 and enhance the adhesion of the substrate 100 to the vacuum coating layer 200.
  • the primer layer 400 may be formed using 15-25% by weight of ethyl propionate, 65-75% by weight of a urethane resin, and 5-15% by weight of acrylic acid.
  • the primer layer 400 can be transparent.
  • the color layer 300 may be formed by spraying a paint.
  • color layer 300 has a metallic matte appearance or a ceramic white feel.
  • color layer 300 can have the effect of a metal sandblasted texture. Thereby, the color layer 300 can be individually selected, and the appearance effect of the mobile terminal housing can be further improved.
  • the specific type of the material of the color layer 300 is not particularly limited as long as the above-described appearance effect can be achieved.
  • the color layer 300 may be disposed at the center of the mobile terminal housing, so that a housing panel having a metal blasting texture can be obtained.
  • the degree of matteness exhibited by the color layer 300 can be adjusted by changing the color lacquer composition constituting the color layer 300.
  • the color lacquer constituting the color layer 300 may be composed of 15-25 wt% alkyd resin, 35-45 wt% acrylic resin, 5-15 wt% epoxy resin, 3-7 wt% resin-wrapped aluminum flakes, and 8-12 wt% benzene. Ether, 10-20 wt% butanone and the like.
  • the mobile terminal housing may further include a middle lacquer layer 500 and a topcoat layer 600 according to an embodiment of the present invention.
  • the intermediate lacquer layer 500 is disposed between the vacuum coating layer 200 and the color layer 300.
  • the specific type of the material of the above-mentioned middle lacquer layer 500 is not particularly limited as long as the vacuum coating layer 200 can be protected and facilitated by laser engraving.
  • the middle lacquer layer 500 may be composed of 15-25% by weight of ethyl propionate, 65-75% by weight of a urethane resin, and 5-15% by weight of acrylic acid.
  • a topcoat layer 600 is disposed on a surface of the color layer 300 that is remote from the side of the vacuum coating layer 200.
  • the undercoat layer e.g., color layer 300
  • the specific type of the material of the above-mentioned topcoat layer 600 is not particularly limited.
  • the topcoat layer 600 may be composed of 20-30% by weight of ethyl butyrate, 55-70% by weight of a polyurethane resin, and 10-20% by weight of acrylic acid.
  • the inventors have unexpectedly found that the use of the mobile terminal housing according to the embodiment of the present invention can also simplify the production steps and save production costs.
  • the conventional mobile terminal housing generally adopts a color layer on the substrate and then a vacuum coating layer.
  • the primer layer and the color layer are sequentially sprayed on the surface of the substrate, and then the vacuum coating layer is disposed.
  • the surface of the substrate portion is printed using ink to utilize the printed ink as a mask for removing the vacuum coating layer.
  • the surface of the substrate on which the ink is printed is sprayed with the deplating solution to perform deplating treatment.
  • the general mobile terminal housing adopts a decorative strategy in which the panel has a metal blasting effect and a metal high-bright edge
  • the above structure needs to remove the vacuum coating of the panel (ie, the center of the substrate) by a method such as laser engraving.
  • Floor The area of the panel is significantly larger than the area of the bright side, which on the one hand causes waste of the vacuum coating material, and on the other hand, the area required for laser engraving is large, thereby prolonging the working time required for the laser engraving.
  • the vacuum coating layer 200 and the color layer 300 are prevented from sharing a topcoat layer.
  • the contrast of the matte effect between the vacuum coating layer 200 and the color layer 300 can be greatly improved.
  • the inventors have unexpectedly found that when the color layer 300 is disposed on the vacuum coating layer 200, the laser engraving area of the laser engraving process can be greatly reduced. Thereby, material waste can be saved and the time for laser engraving can be reduced.
  • the structure avoids spraying the ink layer or the intermediate paint layer multiple times, thereby reducing the operation of the upper and lower sprayed wire bodies, thereby improving production efficiency.
  • the matte brightness of the mobile terminal housing is tested, and the test results show that the metal highlight (glossy) and the matte effect (matte) have different brightness differences according to an embodiment of the present invention. Can achieve a more obvious contrast effect.
  • the German BYK miniature three-angle gloss meter (Model 4446) was used to test the brightness of the glossy and matte surfaces of the mobile terminal housing. Referring to FIG. 2, the brightness of points A and B is measured at three different incident angles, and the test results are shown in Table 1. The comparison shows that when the incident angle is the same, the brightness of the smooth surface (point B) is significantly higher than that of the matte surface (point A).
  • the invention proposes a method of making a mobile terminal housing as described above. According to an embodiment of the present invention, referring to FIG. 3, the method includes:
  • a vacuum coating layer is formed on the substrate.
  • the vacuum coating layer may be formed by a non-conductive vacuum plating treatment using a metal material.
  • the appearance of the bright side of the metal can be realized by the vacuum coating layer, which is advantageous for improving the gloss of the bright side of the metal of the mobile terminal housing.
  • the process conditions of the vacuum coating may be: a working vacuum of 5.0 ⁇ 10 -2 Pa, a coating vacuum of 8.0 ⁇ 10 -1 Pa, an evaporation power of 10-12 kw, and a coating time of 8-10s.
  • the coating material may be 99.99% indium and the mass is 3.5-4.0 g.
  • the method may further include:
  • a primer layer is first formed on the surface of the substrate.
  • the surface enthalpy of the substrate can be covered, and the adhesion of the vacuum coating film can be enhanced to function as a carrier of the vacuum coating layer.
  • the durability of the mobile terminal casing can be improved, and the vacuum coating layer can be prevented from peeling off during use.
  • the specific material of the primer layer has been described in detail above and will not be described herein.
  • the specific method of forming the primer layer and the operating parameters are also not particularly limited, and those skilled in the art can adjust according to actual conditions.
  • the primer layer can be formed by spraying a clear primer.
  • a colorless transparent primer can be sprayed using an automatic compressed air spray technique.
  • the primer sprayed on the substrate is subjected to a film forming treatment.
  • the film formation conditions may be a leveling time of 3-5 minutes, a baking temperature of 50-55 degrees Celsius, and a time of 4-6 minutes.
  • UV curing treatment is carried out, the energy of the UV curing treatment may be 700-800 mj/cm 2 , and the viscosity of the lacquer may be 7.5-8.5 s (NK-2, sec / 25 ° C) (using Iwata NK-2 cup, at 25 At celsius, the paint flows through the cup for 7.5-8.5 s).
  • the film thickness of the formed primer layer may be 12-20 ⁇ m.
  • a color layer is formed on a side of the vacuum coating layer away from the substrate, and the color layer covers a part of the surface of the vacuum coating layer.
  • the material, function, position, and achievable appearance of the color layer have been described in detail above and will not be described herein.
  • the specific method of forming the color layer is also not particularly limited.
  • an automatic compressed air spray technique may be employed to spray a color lacquer material forming a color layer on the surface of the vacuum coating layer.
  • the painted paint may be a silver metallic paint material having a metallic frosting effect.
  • the film formation conditions may be a leveling time of 4-6 min, a baking temperature of 75-85 degrees Celsius, and a time of 10-15 min.
  • the viscosity of the paint can range from 8.5 to 9.5 s (NK-2, sec / 25 ° C).
  • the film layer finally formed may have a film thickness of 4 to 8 ⁇ m.
  • forming a color layer may be achieved by the following steps:
  • a color lacquer is applied to the surface of the vacuum coating layer away from the side of the substrate.
  • the color lacquer layer is subjected to a laser engraving process to remove the color lacquer layer of the predetermined area.
  • a laser engraving process to remove the color lacquer layer of the predetermined area.
  • a color layer of the edge of the substrate is removed, whereby the vacuum coating layer at the edge can be exposed to form a bright metal edge.
  • a laser-filled area of the laser laser engraving can be used to remove the colored paint layer having a certain shape, and the exposed vacuum coating layer can be used to form a metallic texture mark pattern in the center of the substrate, thereby saving trademark hardware. Piece of settings.
  • the time and laser area of the laser engraving process can be reduced, the production efficiency can be improved, and the cost can be reduced.
  • the specific parameters of the laser engraving treatment are not particularly limited, and those skilled in the art can select according to actual conditions.
  • the conditions of the laser engraving may be: frequency 8000-20000, emission time 55 ⁇ s, filling method may be single line filling, the spacing between single lines may be 0.05 mm, and the scanning speed is 900-1000 mm/s.
  • the method may further include:
  • the intermediate lacquer layer may be formed in advance on the surface of the vacuum coating layer away from the substrate before forming the color layer.
  • the material and function of the middle lacquer layer have been described in detail above and will not be described again here.
  • the intermediate lacquer layer can be formed by spray-transparent protective lacquer using an automated compressed air spray technique. After spraying the paint, the medium paint can be film-formed.
  • the film formation conditions are a 3-5 min leveling time, a baking temperature of 50-55 degrees Celsius, and a time of 4-6 minutes. Subsequently, it can be subjected to a UV curing treatment.
  • the curing energy can be 500-600 mj/cm 2 and the medium lacquer viscosity is 7.5-8.5 s (NK-2, sec / 25 ° C).
  • the film thickness of the finally formed intermediate lacquer layer may be 12-18 ⁇ m.
  • a topcoat layer may be formed on the surface of the color layer away from the substrate side.
  • the color layer can be protected by the topcoat layer, so that the performance of the mobile terminal housing prepared by the method can be further improved.
  • the specific materials of the topcoat layer have been described in detail above and will not be described herein.
  • the topcoat layer can be formed by spraying a topcoat using an automated compressed air spray technique.
  • the protective topcoat can be colorless and transparent, thereby not affecting the appearance of the color layer beneath the topcoat layer.
  • the protective topcoat can be film-formed under the conditions of a leveling time of 3-5 min, a baking temperature of 50-55 degrees Celsius, and a time of 4-6 min. Subsequently, it may be subjected to UV curing treatment, the energy may be 800-1200 mj/cm 2 , and the viscosity of the formed topcoat layer may be 7.5-8.5 s (NK-2, sec / 25 ° C), and the film thickness is 20-30 ⁇ m. .
  • forming a color layer can be achieved by the following steps:
  • the same features as the previously applied coated topcoat layer may be provided, and details are not described herein again.
  • the color lacquer layer and the topcoat layer are subjected to a laser engraving process to remove the color lacquer layer and the top lacquer layer of the predetermined region, and expose the vacuum coating layer of the predetermined region.
  • the laser engraving process may have the same features and advantages as the previously described laser engraving process for the color lacquer layer, and will not be described herein.
  • the present invention provides a mobile terminal 1100.
  • the mobile terminal 1100 includes the mobile terminal housing 1000 previously described. Therefore, the mobile terminal 1100 has all the features and advantages of the mobile terminal housing 1000 described above, and details are not described herein again.
  • the specific type of the mobile terminal is not particularly limited, and may be, for example, a mobile phone, a tablet computer, a notebook computer, or the like.
  • the specific shape of the mobile terminal housing is also not particularly limited.
  • the mobile terminal housing may only include a backboard, and the backboard may have a certain arc (3D back shell) or a flat sheet material without curvature.
  • the mobile terminal housing may also be an integrally formed housing that includes both the back shell portion and the side border of the handset.
  • the matte effect of the mobile terminal housing and the specific position of the metal highlight effect are not particularly limited, and those skilled in the art can select according to actual needs.
  • the side may be set to a metallic highlight effect, or a metallic highlight logo may be placed in the center of the back shell, and the like.

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  • Microelectronics & Electronic Packaging (AREA)
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  • Telephone Set Structure (AREA)

Abstract

公开了移动终端壳体、制备方法以及移动终端，该移动终端壳体包括：基体；真空镀膜层，所述真空镀膜层设置在所述基体上；颜色层，所述颜色层设置在所述真空镀膜层远离所述基体一侧的表面上，所述颜色层覆盖所述真空镀膜层的部分表面。

Description

移动终端壳体、制备方法以及移动终端 技术领域
本发明涉及通信设备领域，具体地，涉及移动终端壳体、制备方法以及移动终端。
背景技术
随着电子产品的快速发展，诸如手机、平板电脑、笔记本电脑等便携式电子设备已被人们普遍使用。随着个性化的趋势，人们对便携式电子设备，特别是移动终端的外观提出了更高的要求。金属壳体由于具有更加美观的质感，被越来越广泛的应用于各类电子设备中。而出于满足电子设备信号传输的要求，无法完全采用金属材质形成移动终端的壳体，而是需要在金属形成的壳体中，设置非金属的信号线。因此，造成金属材质的壳体无法获得整体的视觉效果。或者，可以采用非金属材质的基体，通过后期进行表面处理，获得金属质感的外观，以求达到仿金属喷砂质感和高光亮边的效果。
然而，目前的移动终端壳体、制备方法以及移动终端，仍有待改进。
发明内容
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，目前基于非金属材质的基体，制备具有金属外观的移动终端壳体时，普遍存在制备工艺复杂，且金属质感的外观效果欠佳的问题。发明人经过深入研究以及大量实验发现，这主要是由于目前利用非金属材料的基体，在制备仿金属效果的壳体时，用于形成高光亮边效果的镀层以及实现金属喷砂效果的涂层设置不合理，从而造成最终的产品中，高光亮边以及金属喷砂质感需要共用一层面漆。因此，造成高光亮边以及金属喷砂质感的区别并不明显，无法真正做到两种光泽。并且，上述壳体的制备过程中，需要涂覆多次中漆，从而造成需要多次上、下喷涂线体以及拆卸夹具的过程，制备工艺复杂，严重影响生产效率。
本发明旨在至少一定程度上缓解或解决上述提及问题中至少一个。
有鉴于此，在本发明的一个方面，本发明提出了一种移动终端壳体，该移动终端壳体包括：基体；真空镀膜层，所述真空镀膜层设置在所述基体上；颜色层，所述颜色层设置在所述真空镀膜层远离所述基体一侧的表面上，所述颜色层覆盖所述真空镀膜层的部分表面。由此，可以提高该移动终端壳体的生产效率、实现更逼真的仿金属喷砂质感与高光亮边效果。
根据本发明的实施例，所述基体是由塑胶形成的。由此，可以进一步提高该移动终端壳体的性能。
根据本发明的实施例，所述真空镀膜层是由金属材料形成的。由此，可以进一步提高该 移动终端壳体的金属质感。
根据本发明的实施例，所述金属材料包括铟以及铟锡合金的至少之一。由此，可以进一步提高该移动终端壳体的金属质感。
根据本发明的实施例，进一步包括以下结构的至少之一：底漆层，所述底漆层设置在所述基体以及所述真空镀膜层之间；中漆层，所述中漆层设置在所述真空镀膜层以及所述颜色层之间；面漆层，所述面漆层设置在所述颜色层远离所述真空镀膜层一侧的表面上。由此，可以提高该移动终端壳体的生产效率、降低成本、提升产品竞争力。
根据本发明的实施例，所述底漆层包括15-25wt％的丙酸乙脂、65-75wt％的聚氨酯树脂以及5-15wt％的丙烯酸。由此，可以进一步提高该移动终端壳体的性能。
根据本发明的实施例，所述中漆层包括15-25wt％的丙酸乙脂、65-75wt％的聚氨酯树脂以及5-15wt％的丙烯酸。由此，可以进一步提高该移动终端壳体的性能。
根据本发明的实施例，所述颜色层为哑光颜色层或陶瓷颜色层。由此，可以进一步提高该移动终端壳体的外观效果。
根据本发明的实施例，所述颜色层包括15-25wt％醇酸树脂、35-45wt％丙烯酸树脂、5-15wt％环氧树脂、3-7wt％的树脂包裹铝片、8-12wt％苯乙醚以及10-20wt％丁酮。由此，可以进一步提高该移动终端壳体的性能。
在本发明的另一个方面，本发明提出了一种制备前面所述的移动终端壳体的方法，该方法包括：在基体上形成真空镀膜层；以及在真空镀膜层远离所述基体一侧的表面上形成颜色层，所述颜色层覆盖所述真空镀膜层的部分表面。由此，可以简便的获得前面描述的移动终端壳体。该方法可以提高生产效率，实现更逼真的仿金属喷砂质感与高光亮边效果，降低成本。
根据本发明的实施例，所述真空镀膜层利用金属材料，通过不导电真空镀处理而形成的。由此，可以利用真空镀膜层实现金属亮边的外观，有利于提高该移动终端壳体金属亮边的光泽度。
根据本发明的实施例，所述不导电真空镀处理的工作真空度为5.0×10-2Pa，镀膜真空度为8.0×10-1Pa，蒸发功率10-12kw，镀膜的时间为8-10s。由此，可以进一步提高该移动终端壳体的性能。
根据本发明的实施例，形成所述颜色层是通过以下步骤实现的：在所述真空镀膜层远离所述基体一侧的表面上涂覆色漆层；对所述色漆层进行镭雕处理，去除预定区域的所述色漆层，以便形成所述颜色层，并暴露所述预定区域的所述真空镀膜层。由此，可以减少镭雕处理的时间与镭射面积，可以提高生产效率，降低成本。并且，由于镭雕处理去除的是色漆层，因此，可以使得实现金属亮边的真空镀膜层，以及实现哑光效果的色漆层不共用面漆，从而实现更逼真的仿金属喷砂质感与高光亮边效果。
根据本发明的实施例，该方法进一步包括一下步骤的至少之一：在形成所述真空镀膜层之前，在所述基底上预先形成底漆层；在形成所述颜色层之前，预先在所述真空镀膜层远离所述基底一侧的表面上，形成中漆层；以及在形成所述颜色层之后，在所述颜色层远离 所述基底一侧的表面上，形成面漆层。由此，可以进一步提高利用该方法制备的移动终端壳体的性能。
根据本发明的实施例，形成所述颜色层是通过以下步骤实现的：在所述真空镀膜层远离所述基体一侧的表面上涂覆色漆层；在所述色漆层远离所述真空镀膜层一侧的表面上涂覆面漆层；对所述面漆层以及所述色漆层进行镭雕处理，去除预定区域的所述面漆层以及所述色漆层，以便利用所述色漆层形成所述颜色层，并暴露所述预定区域的所述真空镀膜层。由此，可以减少镭雕时间与镭射面积，提高生产效率，降低成本，实现更逼真的仿金属喷砂质感与高光亮边效果。
根据本发明的实施例，所述镭雕处理的频率为8000-20000Hz，发射时间55μs，填充方式为单线填充，单线之间的间距为0.05mm，扫描速度900-1000mm/s。由此，可以进一步提高该移动终端壳体的性能。
在本发明的又一个方面，本发明提出了一种移动终端。根据本发明的实施例，该移动终端包括前面所述的移动终端壳体。由此，该移动终端具有前面所述的移动终端壳体所具有的全部特征以及优点，在此不再赘述。
根据本发明的实施例，所述移动终端为手机。由此，该手机具有前面所述的移动终端所具有的全部特征以及优点，在此不再赘述。
根据本发明的实施例，所述移动终端壳体为所述手机的背壳。由此，该手机的背壳具有前面所述的移动终端壳体所具有的全部特征以及优点，在此不再赘述。
附图说明
本发明的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1显示了根据本发明一个实施例的移动终端壳体的部分结构意图；
图2显示了根据本发明一个实施例的移动终端壳体的结构意图；
图3显示了根据本发明一个实施例的制备移动终端壳体方法的部分流程示意图；
图4显示了根据本发明一个实施例的制备移动终端壳体方法的流程示意图；
图5显示了根据本发明一个实施例的制备移动终端壳体方法的部分流程示意图；
图6显示了根据本发明另一个实施例的制备移动终端壳体方法的部分流程示意图；以及
图7显示了根据本发明一个实施例的移动终端的结构示意图。
附图标记说明：
100：基体；200：真空镀膜层；300：颜色层；400：底漆层；500：中漆层；600：面漆 层；1000：移动终端壳体；1100：移动终端。
具体实施方式
下面详细描述本发明的实施例，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，旨在用于解释本发明，而不能理解为对本发明的限制。
在本发明的一个方面，本发明提出了一种移动终端壳体，参考图1，该移动终端壳体包括：基体100、真空镀膜层200以及颜色层300。真空镀膜层200设置在基体100上，颜色层300设置在真空镀膜层200远离基体100一侧的表面上，颜色层300覆盖真空镀膜层200的部分表面。其中，真空蒸镀层200可以由真空蒸镀的金属材料形成，从而为该移动终端壳体提供高光亮边的效果，颜色层300可以通过调节形成颜色层300的色漆，获得仿金属喷砂质感或是陶瓷质感的视觉效果。根据本发明的实施例，颜色层300覆盖真空镀膜层200的部分表面，由此，可以通过调节颜色层300的设置位置，如覆盖面积以及颜色层300的形状等，调节该移动终端壳体上，颜色层300形成哑光效果的位置。而未被颜色层300覆盖的位置，可以露出真空镀膜层200，从而获得金属高光的效果。例如，可以控制颜色层300的覆盖位置，在预定的区域暴露出真空镀膜层200，形成高光亮边或是金属商标图案。该移动终端壳体可以实现更逼真的仿金属喷砂质感与金属高光效果，获得的光哑效果对比更加显著。
下面根据本发明的具体实施例，对该移动终端壳体的各层结构进行详细说明：
根据本发明的实施例，上述基体100的具体类型不受特别限制，只要能够满足该移动终端壳体的设计要求即可。例如，可以为塑胶材料。
根据本发明的实施例，真空镀膜层200是由金属材料形成的。由此，可以利用真空镀膜层200形成金属高光的视觉效果。根据本发明的实施例，真空镀膜层200的具体形成方式不受特别限制，例如，根据本发明的具体实施例，可以利用包括但不限于不导电真空蒸镀(NCVM)，在衬底100上蒸镀金属靶材形成。本领域技术人员能够理解的是，形成该真空真空镀膜层200的金属材料，即为NCVM时所采用的金属靶材。该金属靶材的具体类型不受特别限制，根据本发明的实施例，金属材料包括铟以及铟锡合金的至少之一。发明人发现，采用上述金属材料制备真空镀膜层200时，不会对移动终端壳体的信号传输功能造成负面影响。例如，根据本发明的具体实施例，可以采用纯度为99.99wt％的铟形成真空镀膜层200，蒸镀质量可以是3.5-4.0g。发明人经过大量实验发现，当蒸镀的金属材料的质量在上述范围内时，形成的真空镀膜层200具有较好的金属光泽。具体的，对大部分尺寸的手机壳体而言，蒸镀质量在上述范围内形成的真空镀膜层200，可以具有较为适当的厚度，从而既不会由于真空镀膜层200的厚度过厚，造成靶材的浪费，也不会由于真空镀膜层200的厚度不足，影响真空镀膜层200的金属感观。
根据本发明的实施例，参考图2，为了进一步提高该移动终端壳体的外观效果以及耐久度，根据本发明的实施例，该移动终端壳体还可以进一步包括底漆层400。根据本发明的实施例，底漆层400设置在基体100以及真空镀膜层200之间。底漆层400可以遮盖基体100表面瑕疵并且增强真空镀膜200的附着力，起到真空镀膜层200载体的作用。由此，可以提高该移动终端壳体的耐久度，防止真空镀膜层在使用过程中发生剥落。根据本发明的实施例，形成上述底漆层400的材料不受特别限制，只要能够遮盖基体100表面瑕疵，并且增强基体100对真空镀膜层200的附着力即可。例如，可以采用15-25wt％的丙酸乙脂、65-75wt％的聚氨酯树脂、5-15wt％的丙烯酸形成底漆层400。底漆层400可以为透明的。
根据本发明的实施例，颜色层300可以是通过喷涂色漆而形成的。例如，根据本发明的具体实施例，颜色层300具有金属哑光的外观或呈陶瓷白质感。例如，根据本发明的具体实施例，颜色层300可以起到仿金属喷砂质感的效果。由此，颜色层300可以进行个性化选择，可以进一步提高该移动终端壳体的外观效果。颜色层300的材料的具体类型不受特别限制，只要能够起到上述外观效果即可。例如，可以使颜色层300设置在移动终端壳体的中央，从而可以获得具有金属喷砂质感的壳体面板。颜色层300所呈现的哑光的程度，可以通过改变构成颜色层300的色漆成分进行调节。具体地，构成颜色层300的色漆可以由15-25wt％醇酸树脂、35-45wt％丙烯酸树脂、5-15wt％环氧树脂、3-7wt％的树脂包裹铝片、8-12wt％苯乙醚、10-20wt％丁酮等组成。
根据本发明的实施例，参考图2，为了进一步提高该移动终端壳体的外观效果，根据本发明的实施例，该移动终端壳体还可以进一步包括中漆层500以及面漆层600。
根据本发明的具体实施例，中漆层500设置在真空镀膜层200以及颜色层300之间。上述中漆层500的材料的具体类型不受特别限制，只要能够保护真空镀膜层200，并便于镭雕即可。例如，中漆层500可以为15-25wt％的丙酸乙脂、65-75wt％的聚氨酯树脂以及5-15wt％的丙烯酸组成。由此，可以提高利用镭雕的效果，防止由于镭雕不完全而存在颜色层300残留，而影响暴露在外的真空镀膜层200的外观效果。
根据本发明的具体实施例，面漆层600设置在颜色层300远离真空镀膜层200一侧的表面上。由此，可以利用面漆层600可以保护下面的涂层(如颜色层300)。根据本发明的实施例，上述面漆层600的材料的具体类型不受特别限制。例如，面漆层600可以由20-30wt％的丁酸乙脂、55-70wt％的聚氨酯树脂以及10-20wt％的丙烯酸组成。
发明人意外地发现，采用根据本发明实施例的移动终端壳体，还可以简化生产步骤，节约生产成本。具体的，传统的移动终端壳体为了实现光哑效果，普遍采用先在基体上设置颜色层，再设置真空镀膜层。具体的，先对基体表面依次喷涂底漆层和颜色层，然后再设置真空镀膜层。随后，再使用油墨对基体部分表面进行印刷，以便利用印刷的油墨，作为去除真空镀膜层时的掩膜。然后对印刷有油墨的基体表面，喷涂退镀液进行退镀处理， 使基体中未被油墨覆盖的颜色层暴露在外，以便实现金属喷砂的视觉效果，而没有退镀部分则保留真空镀膜层，形成高光亮边效果。然后，对壳体表面喷涂褪膜液进行褪膜处理，使印刷在基体表面的油墨溶解。最后，再在上述结构的全部表面喷涂中漆层和面漆层，进行保护。对比可知，这种移动终端壳体，需要多次进行上下喷涂线体的操作，且涉及多次拆装夹具(喷涂油墨层或中漆层时)。由此，严重影响了该移动终端壳体的生产效率。此外，由于一般的移动终端壳体，均采用面板具有金属喷砂效果以及金属高光亮边的装饰策略，因此，上述结构需要利用诸如镭雕的方法，去除面板(即基体中央)部分的真空镀膜层。而面板的面积显著大于亮边的面积，从而一方面造成了真空镀膜层材料的浪费，另一方面由于需要进行镭雕的区域较大，进而延长了镭雕所需的工时。
并且，由于上述结构暴露了颜色层以及真空镀膜层，因此，在去除了油墨层之后，需要额外设置中漆层以及面漆层，从而对颜色层以及真空镀膜层进行保护。而上述两层结构由于共用了中漆层以及面漆层，所以不能够获得真正的光哑效果，也即是金属亮边和金属喷砂效果之间的对比度不够明显。
如前所述，根据本发明实施例的移动终端壳体，由于对真空镀膜层200以及颜色层300的位置进行了设计，因此，避免了真空镀膜层200以及颜色层300共用一个面漆层，从而可以大幅提高真空镀膜层200以及颜色层300之间光哑效果的对比度。并且，发明人意外的发现，当颜色层300设置在真空镀膜层200之上时，还可以大幅降低镭雕处理的镭雕面积。由此，可以节省材料的浪费，并减少镭雕处理的时间。此外，该结构避免了多次喷涂油墨层或中漆层，从而可以减少上下喷涂线体的操作，进而可以提高生产效率。
根据本发明的具体实施例，对上述移动终端壳体的光哑亮度进行测试，测试结果表明，根据本发明实施例的金属高光(光面)以及哑光效果(哑面)亮度差异较大，能够实现对比度较为明显的外观效果。具体的，采用德国BYK微型三角度光泽仪(型号4446)，对该移动终端壳体的光面及哑面的亮度进行测试。参考图2，在3个不同的入射角度下，对A点以及B点的亮度进行测量，检测结果如表1所示。对比可知，入射角度相同时，光面(B点)的亮度显著高于哑面(A点)。
表1
Figure PCTCN2017082907-appb-000001
在本发明的另一个方面，本发明提出了一种制备前面所述的移动终端壳体的方法。根据本发明的实施例，参考图3，该方法包括：
S100：形成真空镀膜层
根据本发明的实施例，在该步骤中，在基体上形成真空镀膜层。根据本发明的具体实施，真空镀膜层可以是利用金属材料，通过不导电真空镀处理而形成的。由此，可以利用真空镀膜层实现金属亮边的外观，有利于提高该移动终端壳体金属亮边的光泽度。关于形成真空镀膜层以及基体的具体材料，前面已经进行了详细的描述，在此不再赘述。例如，根据本发明的具体实施例，真空镀膜的工艺条件可以是：工作真空度是5.0×10-2Pa，镀膜真空度为8.0×10-1Pa，蒸发功率10-12kw，镀膜的时间为8-10s。镀膜材料可以是99.99％铟，质量是3.5-4.0g。
根据本发明的实施例，为了进一步提高真空镀膜的效果，在形成真空镀膜层之前，参考图4，该方法还可以进一步包括：
S10：形成底漆层
根据本发明的实施例，在该步骤中，首先在基体表面形成底漆层。由此，可以遮盖基体表面瑕疵，并且增强真空镀膜的附着力，起到真空镀膜层载体的作用。由此，可以提高该移动终端壳体的耐久度，防止真空镀膜层在使用过程中发生剥落。关于底漆层的具体材料，前面已经进行了详细的描述，在此不再赘述。形成底漆层的具体方法以及操作参数也不受特别限制，本领域技术人员可以根据实际情况进行调节。例如，根据本发明的具体实施例，底漆层可以是通过喷透明底漆而形成的。具体的，可以采用自动压缩空气喷涂技术，喷涂无色透明地底漆。随后，对喷涂在基体上的底漆进行成膜处理。成膜的条件可以是流平时间3-5min，烘烤温度50-55摄氏度，时间4-6min。随后，进行UV固化处理，UV固化处理的能量可以是700-800mj/cm2，漆的粘度可以是7.5-8.5s(NK-2,秒/25摄氏度)(采用岩田NK-2杯，在25摄氏度下，漆流过该杯的时间为7.5-8.5s)。形成的底漆层的膜厚可以是12-20μm。
S200：形成颜色层
根据本发明的实施例，在该步骤中，在真空镀膜层远离基体的一侧形成颜色层，颜色层覆盖真空镀膜层的部分表面。关于颜色层的材料、作用、位置以及能够实现的外观效果，前面已经进行了详细的描述，在此不再赘述。形成颜色层的具体方法也不受特别限制，例如，可以采用自动压缩空气喷涂技术，在真空镀膜层表面喷涂形成颜色层的色漆材料。例如，根据本发明的具体实施例，喷涂的色漆可以是银色的具有金属质感磨砂效果的色漆材料。本领域技术人员能够理解的是，在喷涂色漆之后，可以对其进行成膜处理。成膜的条件可以是流平时间4-6min，烘烤温度可以为75-85摄氏度，时间为10-15min。漆的粘度可以为8.5-9.5s(NK-2，秒/25℃)。最终形成的颜色层的膜厚可以为4-8μm。
根据本发明的实施例，参考图5，形成颜色层可以是通过以下步骤实现的：
S1：涂覆色漆层
根据本发明的实施例，在该步骤中，在真空镀膜层远离基体一侧的表面上涂覆色漆。喷涂色漆层的具体操作参数前面已经进行了详细的描述，在此不再赘述。
S2：对色漆层进行镭雕处理
根据本发明的实施例，在该步骤中，对色漆层进行镭雕处理，去除预定区域的色漆层， 以便形成颜色层，并暴露预定区域的真空镀膜层。具体的，去除该基体边缘的一圈颜色层，由此，可以暴露出边缘处的真空镀膜层，形成金属亮边。或者，可以在基体中央，通过设置激光镭雕的激光填充区域，去除具有一定形状的色漆层，利用暴露出的真空镀膜层，从而在基体的中央形成金属质感的商标图案，可以节省商标五金件的设置。由此，可以减少镭雕处理的时间与镭射面积，提高生产效率，降低成本。镭雕处理的具体参数不受特别限制，本领域技术人员可以根据实际情况进行选择。例如，镭雕的条件可以为：频率8000-20000，发射时间55μs，填充方式可以是单线填充，单线之间的间距可以为0.05mm，扫描速度900-1000mm/s。
根据本发明的实施例，为了进一步提高真空镀膜的效果，在形成颜色层之前，参考图4，该方法还可以进一步包括：
S20：形成中漆层
根据本发明的实施例，在形成颜色层之前，可以预先在真空镀膜层远离基底一侧的表面上，形成中漆层。关于中漆层的材料以及作用，前面已经进行了详细的描述，在此不再赘述。例如，根据本发明的具体实施例，中漆层可以是通过采用自动压缩空气喷涂技术，喷透明保护中漆而形成的。喷涂中漆之后，可以对中漆进行成膜处理。成膜的条件是流平时间3-5min，烘烤温度可以为50-55摄氏度，时间4-6min。随后，可以对其进行UV固化处理。固化的能量可以是500-600mj/cm2，中漆的粘度是7.5-8.5s(NK-2,秒/25℃)。最终形成的中漆层的膜厚可以是12-18μm。由此，可以提高利用镭雕的效果，防止由于镭雕不完全而存在颜色层残留，而影响暴露在外的真空镀膜层的外观效果。
S30：形成面漆层
根据本发明的实施例，在形成颜色层之后，可以在颜色层远离基底一侧的表面上，形成面漆层。由此，可以利用面漆层对颜色层进行保护，从而可以进一步提高利用该方法制备的移动终端壳体的性能。关于面漆层的具体材料，前面已经进行了详细的描述，在此不再赘述。根据本发明的具体实施例，面漆层可以是通过采用自动压缩空气喷涂技术，喷涂面漆而形成的。保护面漆可以为无色透明的，由此，不会影响面漆层下方的颜色层的外观效果。喷涂面漆之后，可以对保护面漆进行成膜处理，条件可以是流平时间3-5min，烘烤温度50-55摄氏度，时间4-6min。随后，可以对其进行UV固化处理，能量可以是800-1200mj/cm2，形成的面漆层的粘度可以为7.5-8.5s(NK-2,秒/25℃)，膜厚是20-30μm。
本领域技术人员能够理解的是，当该方法包括设置面漆层的步骤时，参考图6，形成颜色层可以是通过以下步骤实现的：
S1：涂覆色漆层
根据本发明的实施例，在该步骤中，可以具有与前面描述的涂覆色漆层相同的特征，在此不再赘述。
S3：涂覆面漆层
根据本发明的实施例，在该步骤中，可以具有与前面描述的涂覆面漆层相同的特征，在此不再赘述。
S4：对面漆层以及色漆层进行镭雕处理
根据本发明的实施例，在该步骤中，对色漆层以及面漆层进行镭雕处理，去除预定区域的色漆层以及面漆层，并暴露预定区域的真空镀膜层。镭雕处理可以具有与前面描述的对色漆层进行镭雕处理相同的特征以及优点，在此不再赘述。
在本发明的又一方面，本发明提出了一种移动终端1100。根据本发明的实施例，参考图7，该移动终端1100包括前面所述的移动终端壳体1000。由此，该移动终端1100具有前面所述的移动终端壳体1000所具有的全部特征以及优点，在此不再赘述。
需要说明的是，该移动终端的具体类型不受特别限制，例如，可以为手机、平板电脑或是笔记本电脑等等。在该移动终端中，移动终端壳体的具体形状也不受特别限制。例如，以手机为例，该移动终端壳体可以仅包括背板，背板可以具有一定弧度(3D背壳)，也可以为一个不具有弧度的平面板材。或者，该移动终端壳体也可以为一体成型的壳体，既包括背壳部分，也包括手机的侧边边框。移动终端壳体的哑光效果以及金属高光效果的具体位置(图中未示出)不受特别限制，本领域技术人员可以根据实际需要进行选择。例如，可以将侧边设置成金属高光效果，或者，可以在背壳的中央设置金属高光的商标图案，等等。
在本发明的描述中，需要理解的是，术语“上”、“下”、“前”、“后”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
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，为了避免不必要的重复，本发明对各种可能的组合方式不再另行说明。
此外，本发明的各种不同的实施方式之间也可以进行任意组合，只要其不违背本发明的思想，其同样应当视为本发明所公开的内容。

Claims (19)

  1. 一种移动终端壳体，其特征在于，包括：
    基体；
    真空镀膜层，所述真空镀膜层设置在所述基体上；
    颜色层，所述颜色层设置在所述真空镀膜层远离所述基体一侧的表面上，所述颜色层覆盖所述真空镀膜层的部分表面。
  2. 根据权利要求1所述的移动终端壳体，其特征在于，所述基体是由塑胶形成的。
  3. 根据权利要求1所述的移动终端壳体，其特征在于，所述真空镀膜层是由金属材料形成的。
  4. 根据权利要求3所述的移动终端壳体，其特征在于，所述金属材料包括铟以及铟锡合金的至少之一。
  5. 根据权利要求1所述的移动终端壳体，其特征在于，进一步包括以下结构的至少之一：
    底漆层，所述底漆层设置在所述基体以及所述真空镀膜层之间；
    中漆层，所述中漆层设置在所述真空镀膜层以及所述颜色层之间；
    面漆层，所述面漆层设置在所述颜色层远离所述真空镀膜层一侧的表面上。
  6. 根据权利要求5所述的移动终端壳体，其特征在于，所述底漆层包括15-25wt％的丙酸乙脂、65-75wt％的聚氨酯树脂以及5-15wt％的丙烯酸。
  7. 根据权利要求5所述的移动终端壳体，其特征在于，所述中漆层包括15-25wt％的丙酸乙脂、65-75wt％的聚氨酯树脂以及5-15wt％的丙烯酸。
  8. 根据权利要求1所述的移动终端壳体，其特征在于，所述颜色层为哑光颜色层或陶瓷颜色层。
  9. 根据权利要求1所述的移动终端壳体，其特征在于，所述颜色层包括15-25wt％醇酸树脂、35-45wt％丙烯酸树脂、5-15wt％环氧树脂、3-7wt％的树脂包裹铝片、8-12wt％苯乙醚以及10-20wt％丁酮。
  10. 一种制备权利要求1-9任一项所述的移动终端壳体的方法，其特征在于，包括：
    在基体上形成真空镀膜层；以及
    在真空镀膜层远离所述基体一侧的表面上形成颜色层，所述颜色层覆盖所述真空镀膜层的部分表面。
  11. 根据权利要求10所述的方法，其特征在于，所述真空镀膜层利用金属材料，通过不导电真空镀处理而形成的。
  12. 根据权利要求11所述的方法，其特征在于，所述不导电真空镀处理的工作真空度为5.0×10-2Pa，镀膜真空度为8.0×10-1Pa，蒸发功率10-12kw，镀膜的时间为8-10s。
  13. 根据权利要求10所述的方法，其特征在于，形成所述颜色层是通过以下步骤实现 的：
    在所述真空镀膜层远离所述基体一侧的表面上涂覆色漆层；
    对所述色漆层进行镭雕处理，去除预定区域的所述色漆层，以便形成所述颜色层，并暴露所述预定区域的所述真空镀膜层。
  14. 根据权利要求10所述的方法，其特征在于，进一步包括以下步骤的至少之一：
    在形成所述真空镀膜层之前，在所述基底上预先形成底漆层；
    在形成所述颜色层之前，预先在所述真空镀膜层远离所述基底一侧的表面上，形成中漆层；以及
    在形成所述颜色层之后，在所述颜色层远离所述基底一侧的表面上，形成面漆层。
  15. 根据权利要求13所述的方法，其特征在于，形成所述颜色层是通过以下步骤实现的：
    在所述真空镀膜层远离所述基体一侧的表面上涂覆色漆层；
    在所述色漆层远离所述真空镀膜层一侧的表面上涂覆面漆层；
    对所述面漆层以及所述色漆层进行镭雕处理，去除预定区域的所述面漆层以及所述色漆层，以便利用所述色漆层形成所述颜色层，并暴露所述预定区域的所述真空镀膜层。
  16. 根据权利要求13所述的方法，其特征在于，所述镭雕处理的频率为8000-20000Hz，发射时间55μs，填充方式为单线填充，单线之间的间距为0.05mm，扫描速度900-1000mm/s。
  17. 一种移动终端，其特征在于，包括权利要求1-9任一项所述的移动终端壳体。
  18. 根据权利要求17所述的移动终端，其特征在于，所述移动终端为手机。
  19. 根据权利要求17所述的移动终端，其特征在于，所述移动终端壳体为所述手机的背壳。
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