ELECTRONIC DEVICE HOUSING AND METHOD FOR MAKING THE SAME

• US 20120189842A1
• Filed: 08/10/2011
• Published: 07/26/2012
• Est. Priority Date: 01/22/2011
• Status: Abandoned Application

• Current Assignee: FIH (Hong Kong) Limited (Hon Hai Precision Industry Co., Ltd.), Shenzhen Futaihong Precision Industry Company Limited (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: FIH (Hong Kong) Limited (Hon Hai Precision Industry Co., Ltd.), Shenzhen Futaihong Precision Industry Company Limited (Hon Hai Precision Industry Co., Ltd.)
• Inventors: DU, QI-JIAN, CHIANG, CHWAN-HWA
• Application Number:
  US13/207,100
• Publication Number:
  US 20120189842A1
• Time in Patent Office: Days
• US Class Current: 428/336
• CPC Class Codes: C23C 14/0015 characterized by the colour of the layer
• CPC Class Codes: C23C 14/024 Deposition of sublayers, e.g. to promote adhesion of the coating C23C14/027 takes precedence
• CPC Class Codes: C23C 14/083 of refractory metals or yttrium
• CPC Class Codes: C23C 14/10 Glass or silica
• CPC Class Codes: C23C 14/34 Sputtering
• CPC Class Codes: C23C 14/584 Non-reactive treatment
• CPC Class Codes: Y10T 428/265 1 mil or less
• CPC Class Codes: Y10T 428/31605 Next to free metal
• CPC Class Codes: Y10T 428/31678 Of metal

Abstract

An electronic device includes a substrate, a metallic coating formed on the substrate by vacuum sputtering or vacuum vapor deposition and a top paint coating formed on the metallic coating. The metallic coating comprising a plurality of titanium oxide layers interleaved with an equal number of silicon oxide layers and has a reflectively of about 50%-80%. The top paint coating includes pearl pigments.

Claims

1. An electronic device housing, comprising:

a substrate; and

a metallic coating formed on the substrate by vacuum sputtering or vacuum vapor deposition, the metallic coating including a plurality of titanium oxide layers alternating with an equal number of silicon oxide layers and having a reflectivity of about 50%-80%; and

a top paint coating formed on the metallic coating, the top paint coating including pearl pigments.

2. The electronic device housing as claimed in claim 1, wherein the metallic coating has a thickness of about 50 nm-500 nm.

3. The electronic device housing as claimed in claim 1, wherein the top paint coating has a thickness of about 20 μ

m-30 μ

m.

4. The electronic device housing as claimed in claim 1, wherein the top paint coating is a polyurethane resin paint coating, wherein the mass percentage of pearl pigments is about 1-3%.

5. The electronic device housing as claimed in claim 1, wherein the metallic coating comprise three to seven layers.

6. The electronic device housing as claimed in claim 1, wherein each titanium oxide layer has a refractivity index of about 1.9-2.0, and each silicon oxide layer has a refractivity index of about 1.42-1.46.

7. The electronic device housing as claimed in claim 1, further comprising a middle paint coating formed between the metallic coating and the top paint coating.

8. The electronic device housing as claimed in claim 7, wherein middle paint coating has a thickness of about 10 μ

m-50 μ

m.

9. The electronic device housing as claimed in claim 7, wherein the middle paint coating is an ultraviolet curable resin paint coating or a thermosetting paint coating.

10. The electronic device housing as claimed in claim 9, wherein the paint used for the thermosetting paint coating is selected form polyurethane resin paint and unsaturated polyester.

11. The electronic device housing as claimed in claim 1, wherein the substrate is made of plastic, ceramic or glass.

12. The electronic device housing as claimed in claim 1, further comprising a base paint coating formed between the substrate and the metallic coating.

13. The electronic device housing as claimed in claim 12, wherein the base paint coating has a thickness of about 5 μ

m-10 μ

m.

14. A method for making electronic device housing, comprising:

providing a substrate;

vacuum sputtering or vacuum vapor depositing a metallic coating on the substrate, the metallic coating including a plurality of titanium oxide layers alternating with an equal number of silicon oxide layers and having a reflectively of about 50%-80%;

spraying a top paint coating on the metallic coating, the top paint coating includes pearl pigments.

15. The method as claimed in claim 14, wherein during deposition of the titanium oxide layers use the titanium target, and the oxygen used as a reaction gas.

16. The method as claimed in claim 14, wherein during deposition of the silicon oxide layers use the silicon oxide target, and oxygen is used to supplement element oxygen lost during deposition of the silicon oxide layers.

17. The method as claimed in claim 14, further comprising a step of spraying a base paint coating on the substrate before forming the metallic coating.

18. The method as claimed in claim 14, further comprising a step of spraying a middle paint coating between the metallic coating and the top paint coating.