WO2018076389A1 - 一种移动终端金属外壳及其制备方法、移动终端 - Google Patents

一种移动终端金属外壳及其制备方法、移动终端 Download PDF

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Publication number
WO2018076389A1
WO2018076389A1 PCT/CN2016/104162 CN2016104162W WO2018076389A1 WO 2018076389 A1 WO2018076389 A1 WO 2018076389A1 CN 2016104162 W CN2016104162 W CN 2016104162W WO 2018076389 A1 WO2018076389 A1 WO 2018076389A1
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Prior art keywords
metal casing
metal
mobile terminal
casing body
insulating material
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PCT/CN2016/104162
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English (en)
French (fr)
Inventor
王晓飞
黄义宏
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华为技术有限公司
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Priority to CN201680057580.5A priority Critical patent/CN108496415B/zh
Priority to PCT/CN2016/104162 priority patent/WO2018076389A1/zh
Publication of WO2018076389A1 publication Critical patent/WO2018076389A1/zh

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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
    • H05K5/04—Metal casings

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a mobile terminal metal casing, a preparation method thereof, and a mobile terminal.
  • the metal casing material is aluminum alloy or stainless steel
  • the non-conductive material is generally selected from plastic materials
  • the plastic and metal parts are combined by Insert injection molding or assembly.
  • metal materials are generally anodized or sandblasted. Due to the different materials of metal and plastic, the appearance of the metal is different, and the plastic as the breakpoint of the antenna destroys the metallization effect of the whole structure and reduces the texture of the component.
  • PVD coating plastic and metal coated metal paint or PVD coating to achieve a consistent appearance; in this solution, metal paint is essentially added to the paint to add metal powder or pearl powder to achieve metal effect, although to a certain extent The appearance is consistent, but the texture of the metal is lacking.
  • PVD coating technology on the one hand, different requirements for the film material due to the different substrates of metal and plastic; the other PVD film layer is usually thin, the shielding ability to the substrate is weak, and it is difficult to achieve the uniform appearance effect.
  • the present application provides a mobile terminal metal casing, a preparation method thereof, and a mobile terminal. Used to mention The appearance of the metal casing made by the liter.
  • the present application provides a method for preparing a metal casing of a mobile terminal, the method comprising the following steps:
  • An insulating material is filled in the slit formed by the cutting, and the insulating material adheres the two portions of the divided metal casing body into one body.
  • the integral of the outer surface of the metal outer casing is realized by forming an insulating layer on the outer surface of the metal outer casing body to block the difference between the insulating material on the metal outer casing body and the metal outer casing body, and further, adopting
  • the metal casing produced by the above preparation method forms a hidden antenna breakpoint, which can greatly enhance the flexibility of the design of the all-metal casing smartphone antenna.
  • the method further includes filling, in the gap formed by cutting the metal casing body into two portions of electrical insulation, an optical functional layer having a light source for reflecting, transmitting or absorbing part of the frequency, and the optical functional layer is interposed between the insulating film Between the filled insulation material.
  • an optical functional layer having a light source for reflecting, transmitting or absorbing part of the frequency
  • the optical functional layer is interposed between the insulating film Between the filled insulation material.
  • a specific optical effect can be achieved by the filled optical functional layer, such that infrared light can be used as an example, so that when the mobile terminal needs to emit infrared indicating light, the light can pass through the gap, so that normal indication can be performed.
  • the method further includes laying an optical functional layer on the outer surface of the insulating film that reflects, illuminates, absorbs, or transmits a portion of the frequency light.
  • the uniformity of the metal casing is enhanced by the optical functional layer disposed on the outer surface.
  • the insulating material is plastic, glue, glass, ceramics and the like.
  • the above materials have good insulating properties, and both can achieve the effect of combining the two parts of the metal casing body into one body, ensuring the integrity of the entire metal casing.
  • the glue is reflective, light absorbing or light transmissive glue.
  • the insulating material reflects, absorbs, or transmits light in a specific frequency band to improve the uniformity of light when it hits the surface of the metal casing.
  • the forming an insulating film on the outer surface of the metal casing body is: forming a metal layer on the metal casing body; converting the metal layer into a metal oxide film by anodization or nitridation or Metal nitride film.
  • the step may be performed by converting the surface of the metal casing body into a metal oxide film or a metal nitride film by anodization or nitridation.
  • different preparation methods may be selected according to the metal material of the metal casing body.
  • a layer capable of oxidizing or nitriding may be formed on the metal casing body.
  • the material is anodized or nitrided to form an insulating film.
  • the insulating film can be directly formed by anodization or nitridation.
  • the metal casing body in the above preparation scheme is a composite body formed of plastic and metal, and the outer surface of the formed composite body is metal.
  • the support strength of the metal casing body can be enhanced by plastic by using a metal casing body formed of a plastic and metal composite.
  • the metal casing body When the metal casing body is cut, different processes may be used, such as etching or engraving. Specifically, when the etching process is employed, the two parts of the metal casing body that are electrically insulated are specifically: by etching The liquid cuts the metal casing body into two portions that are electrically insulated.
  • the etching solution used is a saturated acidic solution of copper chloride or copper sulfate, specifically a 0.1 mol/L copper chloride hydrochloric acid (10%) solution.
  • the two parts for cutting the metal casing body into electrical insulation are specifically: the metal casing body is cut into two parts electrically insulated by laser engraving. That is, the metal casing body can be divided into two parts by different processing methods. It should be understood that the cutting method provided by the present scheme can also adopt other processing methods that can be accurately cut in the prior art, such as etching after CNC machining. After engraving, etching after CNC machining or engraving after CNC machining, and then etching and other processing methods of different combinations of processes, will not be described in detail here.
  • the present application also provides a mobile terminal metal casing, comprising a metal casing body, the metal casing body is provided with a slit for cutting the metal casing body into two parts which are electrically insulated; and further comprising filling the gap and An insulating material connecting the two portions of the metal casing body further includes an insulating layer covering the outer surface of the metal casing.
  • the integral of the outer surface of the metal outer casing is achieved by forming an insulating layer on the outer surface of the metal outer casing body to shield the difference between the insulating material on the metal outer casing body and the metal outer casing body, and further,
  • the metal casing produced by the above preparation method can form a hidden breakpoint, thereby greatly improving the flexibility of the design of the all-metal casing smartphone antenna.
  • an optical functional layer disposed within the slit and having a light source that reflects, absorbs, or transmits a portion of the frequency is also included.
  • An optically functional layer, and the optical layer is interposed between the insulating material and the insulating layer.
  • a specific optical effect can be achieved by the filled optical functional layer, such that infrared light can be used as an example, so that when the mobile terminal needs to emit infrared indicating light, the light can pass through the gap, so that normal indication can be performed.
  • the optical function layer disposed on the outer surface of the insulating film has a light reflecting, illuminating, absorbing or transmitting part of the frequency.
  • the consistency of the metal casing is enhanced by the optical function layer provided.
  • the insulating material is plastic, glue, glass or ceramic.
  • Plastic, glue, glass and ceramic have good insulation properties, and can achieve the effect of bonding the two parts of the metal casing body into one body, ensuring the integrity of the entire metal casing.
  • the glue is reflective, light absorbing or light transmissive glue.
  • the insulating material reflects, absorbs, or transmits light in a specific frequency band to improve the uniformity of light when it hits the surface of the metal casing.
  • the present application also provides a mobile terminal comprising a body and the metal casing of any of the above-mentioned ones fixedly connected to the body.
  • a mobile terminal comprising a body and the metal casing of any of the above-mentioned ones fixedly connected to the body.
  • an antenna disposed on the body is further included, wherein at least a portion of the at least electrically insulated portions of the metal housing body serve as radiating elements of the antenna.
  • the integral of the outer surface of the metal outer casing is realized by forming an insulating layer on the outer surface of the metal outer casing body to block the difference between the insulating material on the metal outer casing body and the metal outer casing body, and further, adopting
  • the metal casing produced by the above preparation method forms a hidden breakpoint, which can greatly enhance the flexibility of the design of the all-metal casing smartphone antenna.
  • FIG. 4 are flowcharts showing a method of fabricating a metal casing of a mobile terminal according to an embodiment of the present invention
  • FIG. 5 to FIG. 9 are flowcharts of a method for preparing a metal casing of a mobile terminal according to another embodiment of the present invention.
  • FIG. 1 to FIG. 4 are flowcharts showing a method for preparing a metal casing of a mobile terminal according to an embodiment of the present invention.
  • the embodiment of the invention provides a method for preparing a metal casing 50 of a mobile terminal, the method comprising the following steps:
  • An insulating film 20 is formed on the outer surface of the metal casing body 10; the outer surface may be a surface visible to the user of the metal terminal of the mobile terminal.
  • the insulating material 30 is filled in the slit 11 formed by the cutting, and the insulating material 30 adheres the two portions of the divided metal casing body 10 into one body.
  • the outer surface of the metal casing 50 is realized by forming the insulating film 20 on the outer surface of the metal casing body 10 to shield the difference between the insulating material 30 on the metal casing body 10 and the metal casing body 10, thereby achieving the outer surface of the metal casing 50.
  • the metal casing 50 produced by the above preparation method forms a hidden break point, which can greatly enhance the flexibility of the design of the all-metal casing smartphone antenna.
  • FIGS. 1 to 4 illustrate a method of manufacturing the metal casing 50 provided in this embodiment.
  • Step 1 forming an insulating film 20 on the outer surface of the metal casing body 10;
  • FIG. 1 shows the structure of the metal casing body 10 provided by the embodiment, which is prepared by using a metal material.
  • the metal casing body 10 is 10
  • a plastic reinforcing layer (not shown) is added to enhance the strength of the metal casing body 10. That is, the metal casing body 10 provided in this embodiment is a composite body formed of plastic and metal, and the outer surface of the formed composite body is metal.
  • the above-mentioned plastic and metal composites are prepared by metal and plastic by nanotechnology bonding technology or metal insert molding technology or assembly processing.
  • the metal material of the metal casing body 10 may be aluminum, aluminum alloy, stainless steel, titanium alloy or the like which can be made of the metal casing body 10 by the same process as described above.
  • an insulating film 20 is formed on the metal casing body 10, specifically: a metal layer is formed on the metal casing body 10; the metal layer is converted into a metal oxide film by anodization or nitrided. The metal layer is formed into a metal nitride film.
  • the metal material forming the metal layer on the metal casing body 10 is a metal material which is extremely anodized or nitrided, such as aluminum.
  • the metal layer is laid on the entire outer surface of the metal casing body 10. In a specific arrangement, it may be formed by metal sputtering or other common preparation processes.
  • the formed metal oxide or metal nitride can cover the outer surface of the entire metal casing body 10, improving the appearance effect of the metal casing 50.
  • the insulating film 20 is prepared by separately providing a metal layer, the formed insulating film 20 does not affect the thickness of the metal material of the metal casing body 10, thereby reducing the strength of the metal casing body 10. influences.
  • the material of the laid metal layer may conform to the metal material of the metal casing body 10.
  • the material of the metal casing body 10 is made of aluminum, and the material of the laid metal layer is also made of aluminum.
  • the insulating film 20 when the insulating film 20 is prepared, it is also possible to directly apply gold by anodization or nitridation.
  • the surface of the outer casing body 10 is converted into a metal oxide film or a metal nitride film. That is, the metal material of the metal casing body 10 is anodized or nitrided to form a metal material.
  • the insulating film 20 can be formed directly by anodization or nitridation.
  • the formation of the insulating film 20 in the embodiment of the present invention is not limited to the above-mentioned metal oxide film or metal nitride film, and any other metal compound film capable of forming the insulating film 20 can be applied to the present embodiment.
  • Step 2 dividing the metal casing body 10 into two parts that are electrically insulated;
  • the metal portion on the metal casing body 10 is cut away by a process such as etching or engraving, so that only the insulating film 20 is left.
  • the metal casing body 10 is divided into two portions that are electrically insulated, and the electromagnetic shielding of the metal casing body 10 is broken.
  • the metal-removed area may be a regular linear or circular shape, or may be other irregular patterns. The specific design may be based on actual conditions, and is not limited herein.
  • the metal is etched away by a chemical solvent.
  • the characteristics of the metal material and the metal oxide or the metal nitride in different solvents are utilized, so that the solvent can only etch away the metal portion and retain the metal oxide film or the metal nitride film.
  • the etching solution is a 0.1 mol/L copper chloride hydrochloric acid (10%) solution.
  • the metal casing body 10 is cut into two portions that are electrically insulated by laser engraving.
  • the metal portion on the metal casing body 10 is engraved by laser engraving, leaving only the portion of the insulating film 20, thereby achieving the purpose of dividing the metal casing body 10 into two portions of electrical insulation.
  • the engraving process in the prior art is used, and the parameters in the engraving process are set according to the conditions such as the thickness of the metal portion in the metal casing body 10 which is engraved, as the laser laser engraving is compared in the prior art.
  • Common processing techniques, processing parameter settings have mature limitations and conditions, and will not be described in detail here.
  • the segmentation method provided by this embodiment is not limited to the above etching and engraving.
  • the engraving method should also include a combination process of etching and engraving, as well as other processing methods capable of cutting metal materials in the prior art, such as CNC machine tool processing and different combined processing methods.
  • Step 3 The insulating material 30 is filled in the slit 11 formed by the cutting, and the insulating material 30 bonds and joins the two parts of the divided metal casing body 10 into one body.
  • the slit 11 formed in the cut metal casing body 10 is filled by using an insulating material 30, and the insulating material 30 can bond and bond the divided two-part casing together.
  • the insulating material 30 can be made of different materials such as plastic or glue, glass and ceramic. The above materials have good insulating properties, and both of them can achieve the effect of bonding and bonding the two parts of the metal casing body 10 together, thereby ensuring the integrity of the entire metal casing 50.
  • the glue is reflective, light absorbing or light transmissive glue.
  • the insulating material 30 reflects, absorbs, or transmits light in a specific frequency band, thereby improving the uniformity of light when it is irradiated onto the surface of the metal casing 50.
  • the insulating material may be a composite material of an optical functional film and a structural glue.
  • FIGS. 5-9 illustrate a process for preparing another metal casing 50 of the present embodiment.
  • Step 3 The slit 11 formed when the metal casing body 10 is cut into two portions of electrical insulation is filled with an optical functional layer 40 having reflection, absorption or transmission of part of the frequency light, and the optical functional layer 40 is interposed between the insulating film 20 and Between the filled insulating materials 30.
  • the slit 11 cut in the metal casing body 10 is filled with the optical functional layer 40, which may have different functions, so that the metal casing body 10 has different functions.
  • the optical functional layer 40 is capable of reflecting light and has the same reflection effect as the metal casing body 10, that is, the optical functional layer 40 is a structure made of a material having a relatively high reflectivity. , such as reflective film, reflector, reflective sheet, etc.
  • a material having the same reflectance as that of the metal casing 10 can be selected, so that the light transmitted through the insulating film 20 is reflected back, so that the metal casing 50 can have a good appearance effect under the irradiation of light.
  • the optical functional layer 40 does not allow visible light to pass through (ie, reflects visible light), but is capable of passing infrared light such that the light can pass through the slit 11 when the mobile terminal needs to emit infrared indicating light.
  • the optical functional layer 40 can be implemented by a luminescent material such as a fluorescent strip, a light strip, or the like.
  • the principle is to absorb various light and heat first, convert them into light energy storage, and then automatically emit light in the dark, and realize the light-emitting function by absorbing various visible light, which can be recycled in an infinite number of times, especially below 450 nm.
  • the short-wave visible light, sunlight, and ultraviolet light (UV light) have a strong absorption capacity, thereby achieving the effect of the fluorescent strip.
  • the optical function layer 40 may also be a light strip, such as a light strip composed of one or more light-emitting diodes, connected to a circuit board of the mobile terminal, controlled by a processor of the mobile terminal, such as Flashes during an incoming call, or flashes at the user controller.
  • a light strip is connected to a sensor.
  • the sensor receives the radiant energy of the signal, and then controls the light strip to start blinking, thereby improving the appearance of the mobile terminal.
  • the optical function layer 40 located in the slit 11 is a light-emitting material or a light strip, light can be emitted through the insulating film 20.
  • the material of the optical functional layer 40 may be a black material such as a black pigment or a fiber.
  • a black material such as a black pigment or a fiber.
  • the optical functional layer 40 has a better light absorbing effect.
  • the optical function layer may also be disposed on the outer surface of the metal shell 50, that is, the step may be: laying the outer surface of the insulating film with reflection, illuminating, absorbing or transmitting part of the frequency light.
  • the optical functional layer at this time, the optical functional layer 40 covers the entire outer surface of the insulating film.
  • the method provided in this embodiment further includes: filling an optical functional layer in the slit, and covering the optical functional layer on the outer surface of the insulating film 20, and the optical functional layer has different
  • the function for example, when the optical function layer located in the slit has a light-emitting effect, the optical function layer covering the insulating film has a light-transmissive effect, so that the optical function layer at two different positions can realize the functional matching, Will affect each other.
  • step four the insulating material 30 is filled in the slit 11 formed by the cutting, and the insulating material 30 bonds and joins the two portions of the divided metal outer casing body 10 into one body.
  • the insulating material 30 is further formed in the slit 11, and the metal casing body 10 is bonded and integrally bonded.
  • the insulating material 30 is the same as the insulating material 30 in Embodiment 1, and the preparation process is the same, and will not be described in detail herein.
  • the preparation method provided by the present embodiment blocks the insulating material 30 on the metal casing body 10 by forming an insulating layer on the outer surface of the metal casing body 10.
  • the metal casing 50 produced by the above preparation method forms a hidden breakpoint, which can greatly enhance the design of the all-metal casing smart phone antenna. Flexibility.
  • an embodiment of the present invention further provides a mobile terminal including the above metal casing 50.
  • the metal casing 50 includes a metal casing body 10 and two parts for cutting the metal casing body 10 into electrical insulation.
  • the slit further includes an insulating material filled in the slit and connecting the two portions of the metal casing body 10, and further includes an insulating film 20 covering the outer surface of the metal casing body 10.
  • the insulating film 20 is transparent. Or you can pass through the layer that sets the frequency light.
  • the insulating materials are plastic, glue, glass and ceramic.
  • the plastic, the glue, the glass and the ceramic have good insulation properties, and both can achieve the effect of bonding the two parts of the metal casing body 10 into one body, ensuring the integrity of the entire metal casing 50.
  • the glue is reflective, light absorbing or translucent glue.
  • the insulating material 30 reflects, absorbs, or transmits light in a specific frequency band, thereby improving the uniformity of light when it is irradiated onto the surface of the metal casing 50.
  • the mobile terminal provided by the embodiment of the present invention further includes being disposed in the slot and having An optically functional layer 40 that reflects, absorbs, or transmits a portion of the frequency of light.
  • the optical function layer 40 is interposed between the insulating material 30 and the insulating film 20.
  • a specific optical effect can be achieved by the filled optical functional layer 40, such that infrared light can be used as an example, so that when the mobile terminal needs to emit infrared indicating light, the light can pass through the slit, so that normal indication can be performed.
  • the optical function layer 40 may also be disposed on the outer surface of the insulating film, and the optical functional layer 40 at this time has an optical functional layer that reflects, emits, absorbs or transmits part of the frequency light. More preferably, an optical functional layer is disposed in the gap, and an optical functional layer is further disposed on the outer surface of the insulating film.
  • the specific materials and functions of the above optical functional layer have been clearly described in the above method for preparing the metal outer casing, and will not be described in detail herein.
  • the outer surface of the metal casing 50 is made by using an insulating layer formed on the outer surface of the metal casing body 10 to shield the difference between the insulating material 30 on the metal casing body 10 and the metal casing body 10.
  • the metal casing 50 produced by the above preparation method forms a hidden break point, which can greatly enhance the flexibility of the design of the all-metal casing smartphone antenna.
  • the embodiment of the present invention further provides a mobile terminal, comprising: a body and the metal casing 50 of any one of the above items fixedly connected to the body, and further comprising an antenna disposed on the body, wherein the A portion of at least two portions of the metal casing body 10 that are at least electrically insulated acts as a radiating element of the antenna.
  • the mobile terminal in this embodiment may be a common terminal device such as a mobile phone or a tablet computer. It will not be described in detail here.
  • the mobile terminal provided in this embodiment shields the outer surface of the metal casing 50 by forming an insulating layer on the outer surface of the metal casing body 10 to shield the difference between the insulating material 30 on the metal casing body 10 and the metal casing body 10. Integral, in addition, the metal casing 50 produced by the above preparation method forms a hidden break point, which can greatly enhance the flexibility of the design of the all-metal shell body smartphone antenna.

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Abstract

一种移动终端金属外壳（50）及其制备方法、移动终端，该方法包括以下步骤：在金属外壳本体（10）的外表面形成绝缘膜（20）；将所述金属外壳本体（10）切割成电绝缘的两部分；在切割形成的缝隙（11）内填充绝缘材料（30），且所述绝缘材料（30）将分割的金属外壳本体（10）的两部分结合粘连成一体。在上述技术方案中，通过采用在金属外壳本体（10）的外表面上形成绝缘膜（20）遮挡金属外壳本体（10）上的绝缘材料（30）与金属外壳本体（10）之间的差异，从而实现整个金属外壳（50）的外表面的一致性，此外，采用上述制备方法生产的金属外壳（50）形成隐藏的断点，可以极大的提升全金属外壳智能手机天线设计的灵活性。

Description

一种移动终端金属外壳及其制备方法、移动终端 技术领域
本发明涉及到通信技术领域，尤其涉及到一种移动终端金属外壳及其制备方法、移动终端。
背景技术
在终端领域，金属材料由于其独特的质感，应用越来越广，全金属效果是外观结构件的一个发展趋势。由于金属是导体，作为外观结构件时对设备的天线信号有屏蔽作用，因此目前业界主流方案是通过不导电的材料把天线金属部分和主体金属外壳分隔开。通常，金属外壳材料为铝合金或者不锈钢，不导电材料一般为选用塑胶材料，塑胶与金属件通过Insert注塑或者组装的方式结合在一起。为了实现更好的外观效果以及触感，金属材料一般采用阳极氧化或者喷砂处理。由于金属与塑胶的材质不同而导致其外观有很大差异，而作为天线断点的塑胶破坏了结构件整体的金属化效果，降低了部件的质感。
为了改善外观效果，一种方式为：通过塑胶材料配色或者表面喷涂的方式达到塑胶的金属化效果；但是由于材料本质上的差异(喷涂的油漆实际也属于高分子材料)，塑胶材料不具备金属光泽，通过塑胶配色或者表面喷涂无法做到与金属完全一致的效果。
另一种方式为：塑料与金属整面喷涂金属漆或者PVD镀膜实现一致的外观效果；该方案中由于金属漆本质上是在油漆中添加铝粉或者珠光粉实现金属效果，虽然能从一定程度上实现外观一致，但缺少了金属的质感。PVD覆膜技术，一方面由于金属和塑料的基材不同，对膜材的要求不同；另一方PVD膜层通常较薄，对于基材的遮蔽能力较弱，不易实现外观面一致的效果。
发明内容
本申请提供了一种移动终端金属外壳及其制备方法、移动终端。用以提 升制作的金属外壳的外观效果。
本申请提供了一种移动终端金属外壳的制备方法，该方法包括以下步骤：
在金属外壳本体的外表面形成绝缘膜；
将所述金属外壳本体切割成电绝缘的两部分；
在切割形成的缝隙内填充绝缘材料，且所述绝缘材料将分割的金属外壳本体的两部分粘连成一体。
在上述技术方案中，通过在金属外壳本体的外表面上形成绝缘层以遮挡金属外壳本体上的绝缘材料与金属外壳本体之间的差异，从而实现金属外壳的外表面的一体性，此外，采用上述制备方法生产的金属外壳形成隐藏的天线断点，可以极大的提升全金属外壳智能手机天线设计的灵活性。
此外，该方法还包括在将所述金属外壳本体切割成电绝缘的两部分时形成的缝隙内填充具有反射、透射或吸收部分频率光线的光学功能层，且所述光学功能层介于绝缘膜与填充的绝缘材料之间。通过填充的光学功能层可以实现特定的光学效果，以可以通过红外光线为例，使得移动终端在需要发射红外指示光线时，光线可以从缝隙中穿过，从而能够进行正常的指示。
在一个实施例中，还包括在所述绝缘膜外表面铺设具有反射、发光、吸收或透过部分频率光线的光学功能层。通过设置在外表面的光学功能层提高了金属外壳的一致性。
在一个具体的制备方案中，所述绝缘材料为塑胶、胶水、玻璃、陶瓷等材料。上述材料具有良好的绝缘性能，且均能够实现将金属外壳本体的两部分组合粘接成一体的效果，保证了整个金属外壳的完整性。更佳的，在所述绝缘材料为胶水时，所述胶水为反光、吸光或透光胶水。绝缘材料反射、吸收或透过特定频段的光线，从而改善光线照射到金属外壳表面时的一致性。
在具体制备时，所述在金属外壳本体的外表面形成绝缘膜具体为：在所述金属外壳本体上形成一层金属层；通过阳极氧化或氮化将所述金属层转化成金属氧化膜或金属氮化膜。或者该步骤还可以采用：通过阳极氧化或者氮化将所述金属外壳本体的表面转化成金属氧化膜或金属氮化膜。即在具体制 备时，可以根据金属外壳本体的金属材料选择不同的制备方式，当金属外壳本体的材料不能直接氧化或氮化形成绝缘层时，可通过在金属外壳本体上形成一层能够氧化或氮化的材料，并将该材料进行阳极氧化或者氮化形成绝缘膜。当金属外壳本体的材料能够直接氧化或氮化形成绝缘层时，可以直接通过阳极氧化或氮化形成绝缘膜。
上述制备方案中的金属外壳本体为塑胶与金属形成的复合体，且形成的复合体的外表面为金属。通过采用塑胶与金属复合体形成的金属外壳本体，可以通过塑胶增强金属外壳本体的支撑强度。
在切割金属外壳本体时，可以采用不同的工艺来实现，如蚀刻或雕刻，具体的，在采用蚀刻工艺时，所述的将所述金属外壳本体切割成电绝缘的两部分具体为：通过蚀刻液将所述金属外壳本体切割成电绝缘的两部分。在具体制备时，采用的刻蚀溶液为氯化铜或硫酸铜的饱和酸性溶液，具体为0.1mol/L的氯化铜的盐酸(10％)溶液。
在采用雕刻工艺时，所述的将所述金属外壳本体切割成电绝缘的两部分具体为：通过激光雕刻将所述金属外壳本体切割成电绝缘的两部分。即可以通过不同的加工方式将金属外壳本体分割成两部分，应当理解的是，本方案提供的切割方式还可以采用现有技术中常见的其他能够精确切割的加工方式，如CNC加工后蚀刻、雕刻后蚀刻、CNC加工后雕刻或者CNC加工后雕刻，然后再蚀刻等不同工艺组合的加工方式，在此不再详细赘述。
本申请还提供了一种移动终端金属外壳，包括金属外壳本体，所述金属外壳本体上设置有将所述金属外壳本体切割成电绝缘的两部分的缝隙；还包括填充在所述缝隙内并连接所述金属外壳本体的两部分的绝缘材料，还包括覆盖在所述金属外壳本体外表面上的绝缘层。
在上述技术方案中，通过采用在金属外壳本体的外表面上形成绝缘层来遮挡金属外壳本体上的绝缘材料与金属外壳本体之间的差异，从而实现金属外壳的外表面的一体性，此外，采用上述制备方法生产的金属外壳可形成隐藏的断点，从而极大的提升全金属外壳智能手机天线设计的灵活性。
此外，还包括设置在所述缝隙内且具有反射、吸收或透过部分频率光线的光学功能层。光学功能层，且所述光学层介于所述绝缘材料与所述绝缘层之间。通过填充的光学功能层可以实现特定的光学效果，以可以通过红外光线为例，使得移动终端在需要发射红外指示光线时，光线可以从缝隙中穿过，从而能够进行正常的指示。
可选地，还包括设置在所述绝缘膜外表面的具有反射、发光、吸收或透过部分频率光线的光学功能层。通过设置的光学功能层提高了金属外壳的一致性。
其中的绝缘材料为塑胶、胶水、玻璃或者陶瓷。塑胶、胶水、玻璃和陶瓷具有良好的绝缘性能，且均能够实现将金属外壳本体的两部分组合粘接成一体的效果，保证了整个金属外壳的完整性。具体的，在所述绝缘材料为胶水时，所述胶水为反光、吸光或透光胶水。绝缘材料反射、吸收或者透过特定频段的光线，从而改善光线照射到金属外壳表面时的一致性。
本申请还提供了一种移动终端，该移动终端包括本体以及与所述本体固定连接的上述任一项所述金属外壳。可选地，还包括设置在所述本体上的天线，其中，所述金属外壳本体中至少电绝缘的两部分中的一部分作为所述天线的辐射单元。
在上述技术方案中，通过采用在金属外壳本体的外表面上形成绝缘层遮挡金属外壳本体上的绝缘材料与金属外壳本体之间的差异，从而实现金属外壳的外表面的一体性，此外，采用上述制备方法生产的金属外壳形成隐藏的断点，可以极大的提升全金属外壳智能手机天线设计的灵活性。
附图说明
图1～图4为本发明一实施例提供的移动终端金属外壳的制备方法的流程图；
图5～图9为本发明另一实施例提供的移动终端金属外壳的制备方法的流程图。
附图标记：
10-金属外壳本体 11-缝隙 20-绝缘膜
30-绝缘材料 40-光学功能层
50-金属外壳
具体实施方式
为了使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明作进一步地详细描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
如图1～图4所示，图1至图4示出了本发明实施例提供的一种移动终端金属外壳的制备方法的流程图。
本发明实施例提供了一种移动终端金属外壳50的制备方法，该方法包括以下步骤：
在金属外壳本体10的外表面形成绝缘膜20；外表面可以为移动终端金属外壳的为用户所见的表面。
将所述金属外壳本体10分割成电绝缘的两部分；
在切割形成的缝隙11内填充绝缘材料30，且绝缘材料30将分割的金属外壳本体10的两部分粘连成一体。
在上述实施例中，通过采用在金属外壳本体10的外表面上形成绝缘膜20来遮挡金属外壳本体10上的绝缘材料30与金属外壳本体10之间的差异，从而实现金属外壳50的外表面的一体性，此外，采用上述制备方法生产的金属外壳50形成隐藏的断点，可以极大的提升全金属外壳智能手机天线设计的灵活性。
为了方便理解本实施例提供的金属外壳50的制备方法，下面结合具体的实施例对其进行详细的描述。
实施例1
一并参考图1～图4，图1～图4示出了本实施例提供的金属外壳50的制备方法。
步骤一：在金属外壳本体10的外表面形成绝缘膜20；
具体的，如图1及图2所示，图1示出了本实施例提供的金属外壳本体10的结构，其采用金属材料制备而成，在一个具体的制备方案中，该金属外壳本体10内增加了塑胶补强层(图中未示出)，以增强金属外壳本体10的强度。即本实施例提供的金属外壳本体10为塑胶与金属形成的复合体，且形成的复合体的外表面为金属。在具体制备过程中，上述塑胶与金属复合体通过金属与塑胶以纳米技术结合技术或金属嵌件注塑技术或组装等加工工艺制备而成。
其中金属外壳本体10的金属材料可以为铝、铝合金、不锈钢、钛合金等可用上述相同工艺制作金属外壳本体10的材料。
在制备完成金属外壳本体10后，在金属外壳本体10上形成绝缘膜20，具体为：在金属外壳本体10上形成一层金属层；通过阳极氧化将金属层转化成金属氧化膜或通过氮化将金属层形成金属氮化膜。在采用上述方法时，在金属外壳本体10上形成金属层的金属材料为极易阳极氧化或氮化的金属材料，如铝。并且在形成该金属层时，金属层铺设在金属外壳本体10的整个外表面，在具体设置时，可以采用金属溅射或其他的常见的制备工艺形成。通过在金属外壳本体10的外表面整体覆盖形成绝缘膜20的金属层，保证形成的金属氧化物或金属氮化物能够覆盖整个金属外壳本体10的外表面，提高金属外壳50的外观效果。在采用上述制备方法时，由于绝缘膜20采用单独设置的金属层制备，因此，形成的绝缘膜20不会影响到金属外壳本体10的金属材料的厚度，进而降低对金属外壳本体10的强度的影响。此外，在采用上述制备方法时，铺设的金属层的材料可以与金属外壳本体10的金属材料一致。如金属外壳本体10的材料采用铝，铺设的金属层的材料也采用铝。
此外，在制备绝缘膜20时，还可以采用通过阳极氧化或者氮化直接将金 属外壳本体10的表面转化成金属氧化膜或金属氮化膜。即在金属外壳本体10的金属材料为能够阳极氧化或氮化形成金属材料。可以直接通过阳极氧化或氮化形成绝缘膜20。
应当理解的是，本发明实施例形成绝缘膜20不仅限于上述提到的金属氧化膜或金属氮化膜，其他的任何能够形成绝缘膜20的金属化合物膜均可以应用在本实施例中。
步骤二：将所述金属外壳本体10分割成电绝缘的两部分；
具体的，如图3所示，通过蚀刻或者雕刻等加工工艺，将金属外壳本体10上的金属部分切割掉，从而仅保留绝缘膜20。从而使得金属外壳本体10被分割成电绝缘的两部分，破坏掉金属外壳本体10的电磁屏蔽。在祛除金属时，去除金属的区域可以是规则的线性、环形，也可以是其他不规则的图形，具体的可以根据实际的情况进行设计，在此不进行限定。
在具体的制备过程中，当采用蚀刻工艺时，通过化学溶剂将金属刻蚀掉。具体的，利用金属材料与金属氧化物或金属氮化物在不同溶剂中的特性，使得溶剂仅仅能够刻蚀掉金属部分，保留金属氧化膜或金属氮化膜。在金属采用铝材料时，蚀刻溶液采用0.1mol/L的氯化铜盐酸(10％)溶液。通过采用上述溶液，并且通过控制刻蚀的时间以及溶液的用量，从而保证在刻蚀时，金属材料能够被刻蚀掉，从而保留下来绝缘膜20部分，实现将金属外壳本体10切割的目的。
在采用雕刻工艺时，通过激光雕刻将金属外壳本体10切割成电绝缘的两部分。如激光镭雕工艺，通过激光雕刻将金属外壳本体10上的金属部分雕刻掉，仅剩下绝缘膜20部分，从而实现了将金属外壳本体10分割成电绝缘的两部分的目的。在具体雕刻时，采用现有技术中的雕刻工艺，并根据需要雕刻掉的金属外壳本体10中的金属部分的厚度等条件设定雕刻工艺中的参数，由于激光镭雕是现有技术中比较常见的加工工艺，加工参数设定具有成熟的限定以及条件，在此不再详细赘述。
应当理解的是，本实施例提供的分割方法，不仅限于上述的蚀刻以及雕 刻的方式，还应该包括蚀刻、雕刻的组合工艺，以及现有技术中能够实现将金属材料进行切割的其他加工方式，如数控机床加工以及不同的组合加工方法。
步骤三：在切割形成的缝隙11内填充绝缘材料30，且绝缘材料30将分割的金属外壳本体10的两部分结合粘连成一体。
具体的，如图4所示，通过采用绝缘材料30填充在切割金属外壳本体10形成的缝隙11中，并且该绝缘材料30能够将分割开的两部分壳体结合粘接成一体。在具体制作时，该绝缘材料30可以采用不同的材料，如塑胶或胶水，玻璃和陶瓷。上述材料具有良好的绝缘性能，且均能够实现将金属外壳本体10的两部分结合粘接成一体的效果，保证了整个金属外壳50的完整性。此外，在绝缘材料30为胶水时，胶水为反光、吸光或者透光胶水。绝缘材料30反射、吸收或透光特定频段的光线，从而改善光线照射到金属外壳50表面时的一致性。如此外，该绝缘材料可以采用光学功能膜与结构胶水的复合材质。
实施例2
一并参考图5～图9，图5～图9示出了本实施例的另一种金属外壳50的制备工艺。
如图5～图7所示，本实施例提供的金属外壳50的制备工艺中的壳体制备及切割的工艺与实施例1中图1～图3示出的金属外壳本体10及切割的工艺相同，在此不再详细赘述。
步骤三、在将金属外壳本体10切割成电绝缘的两部分时形成的缝隙11内填充具有反射、吸收或透过部分频率光线的光学功能层40，且光学功能层40介于绝缘膜20与填充的绝缘材料30之间。
具体的，如图8所示，在金属外壳本体10上切割成的缝隙11中填充光学功能层40，该光学功能层40可以具有不同的功能，从而使得金属外壳本体10具有不同的功能。具体的，在一个具体的实施方式中，光学功能层40能够反射光线，且具有与金属外壳本体10相同的反射效果，即该光学功能层40为采用反射率比较高的材料制作而成的结构，如反射膜、反射板、反射片等， 且在具体选用材料时，可以选择反射率与金属外壳10的反射率相同的材料，从而使得透过绝缘膜20的光线反射回去，使得金属外壳50在光线的照射下能够具有良好的外观效果。在另一个具体的实施方式中，光学功能层40不允许可见光穿过(即反射可见光)，但能够通过红外光线，使得移动终端在需要发射红外指示光线时，光线可以从缝隙11中穿过。如移动终端内部具有能够发射红外指示的器件，该器件发射的红外指示光线能够穿透过光学功能层40后照射出去，从而使得该器件能够正常工作。在另一个具体的实施方式中，光学功能层40可以通过发光材料实现，如荧光条、发光条等。在采用荧光条时，其原理为先吸收各种光和热，转换成光能储存，然后在黑暗中自动发光，通过吸收各种可见光实现发光功能，可无限次数循环使用，尤其对450纳米以下的短波可见光、阳光和紫外线光(UV光)具有很强的吸收能力，从而实现荧光条发光的效果。
在一个实施例中，光学功能层40还可以为灯带，如由一个或多个发光二级管组成的光带，连接到移动终端的电路板中，通过移动终端的处理器进行控制，如在来电时进行闪烁，或在用户控制器进行闪烁等。或者采用灯带连接一个感应器，在移动终端来电时，感应器接收到信号的辐射能量后，控制灯带开始闪烁，从而提高移动终端的外观效果。此外，在位于缝隙11中的光学功能层40为发光材料或者灯带时，光线可以通过绝缘膜20发射出去。
在光学功能层40采用吸光材料时，此时，该光学功能层40的材料可以黑色材料，如黑色颜料、纤维。较佳的，可以采用国萨里纳米系统公司(Surrey NanoSystems)研发的一种材料，该材料名为“Vantablack”，其由碳纳米管制成，可吸收照射其上的99.96％的光线，使得形成的光学功能层40具有较佳的吸光效果。
可选地，在具体制备时，光学功能层还可以设置在金属外壳50的外表面，即该步骤可以为：在所述绝缘膜外表面铺设具有反射、发光、吸收或透过部分频率光线的光学功能层，此时该光学功能层40覆盖整个绝缘膜的外表面。其中，在光学功能层40采用反射、吸光或透过部分频率光线时，材料与上述 描述的光学功能层相同。
作为一个更佳的实施方式，本实施例提供的方法中还包括：在缝隙内填充光学功能层，并且在绝缘膜20的外表面也覆盖光学功能层，且所述光学功能层为具有不同的功能，如：在位于缝隙内的光学功能层具备发光效果时，覆盖在绝缘膜上的光学功能层具有透光的效果，从而实现两个不同位置的光学功能层能够实现功能上的搭配，不会互相影响。
步骤四，在切割形成的缝隙11内填充绝缘材料30，且绝缘材料30将分割的金属外壳本体10的两部分结合粘连成一体。
具体的如图9所示，在缝隙11中形成光学功能层40后，在缝隙11中再形成绝缘材料30，并将金属外壳本体10结合粘接成一体。该绝缘材料30与实施例1中的绝缘材料30相同，且制备工艺相同，在此不再详细赘述。
通过上述实施例1及实施例2所示的制备方法可以看出，本实施例提供的制备方法通过采用在金属外壳本体10的外表面上形成绝缘层遮挡金属外壳本体10上的绝缘材料30与金属外壳本体10之间的差异，从而实现金属外壳50的外表面的一体性，此外，采用上述制备方法生产的金属外壳50形成隐藏的断点，可以极大的提升全金属外壳智能手机天线设计的灵活性。
如图4所示，本发明实施例还提供了一种移动终端，该移动终端包括上述金属外壳50，该金属外壳50包括金属外壳本体10以及将金属外壳本体10切割成电绝缘的两部分的缝隙；还包括填充在缝隙内并连接金属外壳本体10的两部分的绝缘材料，还包括覆盖在金属外壳本体10外表面上的绝缘膜20，在本实施例中该绝缘膜20为透明的，或者可以透过设定频率光线的层。
其中的绝缘材料为塑胶、胶水、玻璃和陶瓷。塑胶、胶水、玻璃和陶瓷具有良好的绝缘性能，且均能够实现将金属外壳本体10的两部分结合粘接成一体的效果，保证了整个金属外壳50的完整性。具体的，在绝缘材料30为胶水时，胶水为反光、吸光或透光胶水。绝缘材料30反射、吸收或透过特定频段的光线，从而改善光线照射到金属外壳50表面时的一致性。
如图9所示，本发明实施例提供的移动终端还包括设置在缝隙内且具有 反射、吸收或透过部分频率光线的光学功能层40。光学功能层40介于绝缘材料30与绝缘膜20之间。通过填充的光学功能层40可以实现特定的光学效果，以可以通过红外光线为例，使得移动终端在需要发射红外指示光线时，光线可以从缝隙中穿过，从而能够进行正常的指示。可选的，该光学功能层40还可以设置在所述绝缘膜外表面，此时的光学功能层40具有反射、发光、吸收或透过部分频率光线的光学功能层。更佳的，还可以采用在缝隙内设置一层光学功能层，另外在绝缘膜外表面再铺设一层光学功能层。上述光学功能层具体的材料以及功能在上述金属外壳的制备方法中已经描述清楚，在此不再详细赘述。
在上述实施例中，通过采用在金属外壳本体10的外表面上形成绝缘层以遮挡金属外壳本体10上的绝缘材料30与金属外壳本体10之间的差异，从而使得金属外壳50的外表面的一体性，此外，采用上述制备方法生产的金属外壳50形成隐藏的断点，可以极大的提升全金属外壳智能手机天线设计的灵活性。
本发明实施例还提供了一种移动终端，该移动终端包括本体以及与所述本体固定连接的上述任一项所述金属外壳50，还包括设置在所述本体上的天线，其中，所述金属外壳本体10中至少电绝缘的两部分中的一部分作为所述天线的辐射单元。
其中该实施例中的移动终端可以手机、平板电脑等常见的终端设备。在此不再详细说明。本实施例提供的移动终端通过采用在金属外壳本体10的外表面上形成绝缘层遮挡金属外壳本体10上的绝缘材料30与金属外壳本体10之间的差异，从而使得金属外壳50的外表面的一体性，此外，采用上述制备方法生产的金属外壳50形成隐藏的断点，可以极大的提升全金属外壳本体智能手机天线设计的灵活性。
显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。

Claims (18)

  1. 一种移动终端金属外壳的制备方法，其特征在于，包括以下步骤：
    在金属外壳本体的外表面形成绝缘膜；
    将所述金属外壳本体切割成电绝缘的两部分；
    在切割形成的缝隙内填充绝缘材料，且所述绝缘材料将分割的金属外壳本体的两部分结合粘连成一体。
  2. 如权利要求1所述的移动终端金属外壳的制备方法，其特征在于，还包括在将所述金属外壳本体切割成电绝缘的两部分时形成的缝隙内填充具有反射、吸收或透过部分频率光线的光学功能层，且所述光学功能层介于绝缘膜与填充的绝缘材料之间。
  3. 如权利要求1所述的移动终端金属外壳的制备方法，其特征在于，还包括在所述绝缘膜外表面铺设具有反射、发光、吸收或透过部分频率光线的光学功能层。
  4. 如权利要求1所述的移动终端金属外壳的制备方法，其特征在于，所述绝缘材料为塑胶、胶水、玻璃或者陶瓷。
  5. 如权利要求4所述的移动终端金属外壳的制备方法，其特征在于，在所述绝缘材料为胶水时，所述胶水为反光、吸光或透光胶水。
  6. 如权利要求1～5任一项所述的移动终端金属外壳的制备方法，其特征在于，所述在金属外壳本体的外表面形成绝缘膜具体为：
    在所述金属外壳本体上形成一层金属层；通过阳极氧化或氮化将所述金属层转化成金属氧化膜或金属氮化膜。
  7. 如权利要求1～5任一项所述的移动终端金属外壳的制备方法，其特征在于，所述在金属外壳本体的外表面形成绝缘膜具体为：
    通过阳极氧化或者氮化将所述金属外壳本体的表面转化成金属氧化膜或金属氮化膜。
  8. 如权利要求1～7任一项所述的移动终端金属外壳的制备方法，其特征 在于，所述金属外壳本体为塑胶与金属复合体，且形成的金属复合体的外表面为金属。
  9. 如权利要求8所述的移动终端金属外壳的制备方法，其特征在于，所述将所述金属外壳本体切割成电绝缘的两部分具体为：
    通过蚀刻将所述金属复合体的金属切割成电绝缘的两部分。
  10. 如权利要求9所述的移动终端外壳的制备方法，其特征在于，所述通过蚀刻将所述金属外壳本体切割成电绝缘的两部分采用的蚀刻溶液为0.1mol/L的氯化铜的盐酸溶液。
  11. 如权利要求8所述的移动终端金属外壳的制备方法，其特征在于，所述将所述金属外壳本体切割成电绝缘两部分具体为：
    通过激光雕刻将所述金属外壳本体切割成电绝缘的两部分。
  12. 一种移动终端金属外壳，其特征在于，包括金属外壳本体，所述金属外壳本体上设置有将所述金属外壳本体切割成电绝缘的两部分的缝隙；还包括填充在所述缝隙内并连接所述金属外壳本体的两部分的绝缘材料，还包括覆盖在所述金属外壳本体外表面上的绝缘层。
  13. 如权利要求12所述的移动终端金属外壳，其特征在于，还包括设置在所述缝隙内且具有反射、吸收或透过部分频率光线的光学功能层。光学功能层，且所述光学层介于所述绝缘材料与所述绝缘层之间。
  14. 如权利要求12所述的移动终端金属外壳，其特征在于，还包括设置在所述绝缘膜外表面的具有反射、发光、吸收或透过部分频率光线的光学功能层。
  15. 如权利要求12所述的移动终端金属外壳，其特征在于，所述绝缘材料为塑胶、胶水、玻璃或陶瓷。
  16. 如权利要求15所述的移动终端金属外壳，其特征在于，在所述绝缘材料为胶水时，所述胶水为反光、吸光或者透光胶水。
  17. 一种移动终端，其特征在于，包括本体以及与所述本体固定连接的如权利要求12～16任一项所述金属外壳。
  18. 如权利要求17所述的移动终端，其特征在于，还包括设置在所述本体上的天线，其中，所述金属外壳本体中至少电绝缘的两部分中的一部分作为所述天线的辐射单元。
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