TWI491514B - Housing for electronic device - Google Patents

Description

Electronic device housing

The present invention relates to an electronic device housing, and more particularly to an electronic device housing having a variable color and a metallic appearance.

The housing of conventional electronic products (such as mobile phones, PDAs, etc.) is often plated with a metal layer or a metal oxide layer to give the product a metallic feel, thereby attracting consumers' attention. The metal layer is typically formed by electroless plating because the metal layer is non-conductive, thereby preventing interference with the signal. The non-conductive metal layer or metal oxide layer is generally transparent, and after being formed on the casing, together with the substrate of the casing or other paint layers formed on the casing, the casing exhibits a colored metal Textured appearance.

However, although the casing has a color metallic appearance, it does not exhibit a changing color, and does not have a dynamic appearance, and its appearance is not attractive, and it is difficult to make the product more competitive.

In view of the above, it is necessary to provide an electronic device housing having a variable color and a metallic appearance.

An electronic device housing includes a base body and a metal texture layer formed on a surface of the base body, the housing further comprising a primer layer disposed between the base body and the metal texture layer, the metal texture The layer comprises a composite layer in which a plurality of layers of zirconia layer and a plurality of layers of aluminum oxide are alternately laminated, or a layer of a plurality of layers of yttria and zirconia mixed with a composite layer in which the ruthenium oxide layers are alternately laminated, a surface of the composite layer is formed with a magnesium fluoride layer, and the reflected light of the metal texture layer and the reflected light of the primer layer form a complex interference strengthening region in the space to generate a color change Metal texture appearance.

Compared with the prior art, the reflected light of the metal texture layer of the specific structure of the electronic device casing of the present invention can form a plurality of interference enhancement regions in the space with the reflected light of the substrate, when the human eye is in the plurality of interference enhancement regions. It is observed that the change color and the strong metallic appearance of the substrate and the metal texture layer are different, and when the electronic device housing is swung, the appearance of the change color and the strong metal texture is also on the surface of the electronic device housing. Flowing between different regions, with strong dynamics, giving people a sense of fashion and beauty, greatly improving the attractiveness of the product and competitiveness in the market.

10‧‧‧Electronic device housing

11‧‧‧ base

13‧‧‧ Primer layer

15‧‧‧Metal texture layer

17‧‧‧Face paint layer

1 is a cross-sectional view of a housing of an electronic device according to a preferred embodiment of the present invention.

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

Referring to FIG. 1 , an electronic device housing 10 according to a preferred embodiment of the present invention includes a base 11 and a primer layer 13 , a metal texture layer 15 and a topcoat layer 17 which are sequentially formed on the surface of the base 11 .

The base 11 can be a plastic substrate that can be made by injection molding. The plastic for injection molding the substrate 11 may be selected from the group consisting of polycarbonate (PC), polyethylene (PE), polymethyl methacrylate (PMMA), and polycarbonate and acrylonitrile-styrene-butadiene copolymer. Any of the mixtures (PC + ABS). The substrate 11 can also be a ceramic substrate.

The primer layer 13 can be formed by spraying an acrylic paint on the surface of the substrate 11. The primer Layer 13 is a colored paint layer having a smooth, flat surface that enhances the adhesion of the subsequent coating to primer layer 13. The primer layer 13 is provided to the desired color of the electronic device housing 10. The primer layer 13 may have a thickness of between 1 and 30 μm.

The metal texture layer 15 includes a composite layer in which a plurality of layers of zirconia layer and a plurality of layers of aluminum oxide are alternately laminated, or a composite layer in which a plurality of layers of a mixed material of yttria and zirconia are alternately laminated with a layer of yttria, in which the composite layer is A magnesium fluoride layer is also formed on the surface. The total number of layers of the zirconium oxide layer, the aluminum oxide layer or the total layer of the yttria, zirconia mixed material layer and the cerium oxide layer contained in the composite layer may be between 5-10 layers. The magnesium fluoride layer formed on the surface of the composite layer may have a thickness of 10 to 150 nm. The metal texture layer 15 may have a thickness of 100 to 900 nm. The metal texture layer 15 can be formed by vacuum coating, such as vacuum sputtering, vacuum evaporation, or the like. The plating temperature of the metal texture layer 15 is set to 80 ° C or lower.

The reflected light of the metal texture layer 15 having the above structure and the reflected light of the primer layer 13 can form a plurality of interference enhancement regions in the space, and when the human eye is in the plurality of interference enhancement regions, a difference from the bottom can be observed. The fascinating color of the lacquer layer 13 and the metal texture layer 15 and the strong metallic appearance of the metal texture layer 15, and when the electronic device casing 10 is swayed, the appearance of the fascinating color and the strong metallic texture is also followed by the electronic device casing. The flow between different areas of the surface of the body 10 has a strong sense of movement, giving people a beautiful enjoyment.

The topcoat layer 17 is a transparent protective lacquer layer having a thickness of 10 to 50 μm. The paint used to form the topcoat layer 17 can be a UV curable lacquer which has a relatively high hardness and thus provides good surface protection.

It can be understood that the primer layer 13 can be omitted, that is, the metal texture layer 15 is directly formed on the surface of the substrate 11. At this time, the substrate 11 is preferably made of a colored substrate. The reflected light of the metal texture layer 15 and the reflected light of the substrate 11 can form a plurality of interference enhancement regions in the space. When the human eye is in the plurality of interference enhancement regions, different from the base 11 and the metal texture layer can be observed. The changing color of 15 and the strong metallic appearance of the metallic texture layer 15 and the appearance of the changing color and the strong metallic texture are also between different regions on the surface of the electronic device housing 10 when the electronic device housing 10 is swung. Flowing, with a strong sense of movement, giving people a beautiful enjoyment.

It can be understood that the topcoat layer 17 can also be omitted.

The electronic device housing 10 can be a housing of a product such as a mobile phone, a PDA, a notebook computer, an MP3, an MP4, a GPS navigator, a Bluetooth headset, and a digital camera.

The reflected light of the metal texture layer 15 having the specific structure of the electronic device casing 10 of the present invention may form a plurality of interference strengthening regions in the space with the reflected light of the primer layer 13 or the substrate 11, when the human eye is in the plurality of interference strengthening regions. At the same time, a change color different from the primer layer 13, the base 11 and the metal texture layer 15 and a strong metallic texture appearance can be observed, and when the electronic device casing 10 is swung, the appearance of the changed color and the strong metallic texture is also Then, it flows between different areas on the surface of the electronic device casing 10, and has a strong dynamic feeling, giving a fashionable and beautiful enjoyment, greatly improving the appearance appeal of the product and the competitiveness in the market.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. The above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art will be covered by the following claims.

10‧‧‧Electronic device housing

11‧‧‧ base

13‧‧‧ Primer layer

15‧‧‧Metal texture layer

17‧‧‧Face paint layer

Claims (9)

An electronic device housing comprising a substrate and a metal texture layer formed on the surface of the substrate, wherein the housing further comprises a primer layer disposed between the substrate and the metal texture layer. The metal texture layer comprises a composite layer in which a plurality of layers of zirconium oxide layer and a plurality of layers of aluminum oxide are alternately laminated, or a composite layer in which a plurality of layers of a mixed material of cerium oxide and zirconium oxide are alternately laminated with a layer of cerium oxide, the composite layer being A magnesium fluoride layer is formed on the surface, and the reflected light of the metal texture layer and the reflected light of the primer layer form a complex interference strengthening region in the space to produce a metallic appearance with a varying color. The electronic device casing according to claim 1, wherein the total number of layers of the zirconia layer and the aluminum oxide layer in the composite layer or the mixed material layer of yttria, zirconia and the cerium oxide layer The number of layers is between 5-10 layers. The electronic device housing according to claim 1, wherein the magnesium fluoride layer has a thickness of 10 to 150 nm. The electronic device housing according to claim 1, wherein the metal texture layer has a thickness of 100 to 900 nm. The electronic device casing according to claim 1, wherein the metal texture layer is formed by vacuum plating, and the coating temperature is below 80 °C. The electronic device casing according to claim 1, wherein the primer layer is formed by spraying an acrylic varnish, and the primer layer has a thickness of between 1 and 30 μm. The electronic device housing of claim 1, wherein the housing further comprises a topcoat layer disposed on a surface of the metal texture layer. The electronic device housing of claim 7, wherein the topcoat layer is a transparent protective lacquer layer, and the topcoat layer has a thickness of 10-50 μm. The electronic device housing of claim 1, wherein the base body is made of plastic or ceramic.