# US 2014/0190739 A1 · Housing and electronic device using the housing

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- Number: US 2014/0190739 A1
- Document ID: US20140190739A1
- Status: Published application
- Kind: A1
- Application number: 13/869,709
- Filed: 2013-04-24
- Published: 2014-07-10
- Earliest claimed: 2013-01-07
- Assignees: FIH (Hong Kong) Limited; Shenzhen Futaihong Precision Industry Co., Ltd.
- Applicants: Fih (Hong Kong) Limited
- Inventors: SHU-XIANG ZHOU; JUN XIONG
- Web page: https://patentgrep.com/patent/US20140190739A1

## CPC

- H05K 5/04: Metal casings
- C25D 11/24: Chemical after-treatment
- C25D 11/243: {using organic dyestuffs}
- C25D 11/246: {for sealing layers}
- H05K 5/0243: {for decorative purposes}
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- C25D: PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR

## Abstract

A housing includes a substrate made of aluminum or aluminum alloy, an anodic oxide film disposed on the substrate, and an abrasion resisting layer disposed on the anodic oxide film. The abrasion resisting layer is an alkylate silicon dioxide layer containing nano aluminum oxide powder. An electronic device using the housing is also described.

## Claims

### Claim 1

A housing, comprising:
a substrate made of aluminum or aluminum alloy;
an anodic oxide film disposed on the substrate; and
an abrasion resisting layer disposed on the anodic oxide film, the abrasion resisting layer being an alkylate silicon dioxide layer comprising nano aluminum oxide powder.

### Claim 2 (depends on 1)

The housing as claimed in claim 1, wherein Si—O—Si groups are formed at the interface of the alkylate silicon dioxide layer and the anodic oxide film.

### Claim 3 (depends on 1)

The housing as claimed in claim 1, wherein the nano aluminum oxide powder comprises particles having an average diameter of about 30 nm to about 60 nm, the nano aluminum oxide powder has a mass percentage of about 60% to about 85% in the abrasion resisting layer.

### Claim 4 (depends on 1)

The housing as claimed in claim 1, wherein the anodic oxide film defines a plurality of micro-pores, the nano aluminum oxide powder fills the micro-pores and attaches on the anodic oxide film.

### Claim 5 (depends on 1)

The housing as claimed in claim 1, wherein the anodic oxide film defines a plurality of micro-pores, the micro-pores are filled by colorant and sealing agent, the nano aluminum oxide powder attaches on the anodic oxide film.

### Claim 6 (depends on 1)

The housing as claimed in claim 1, wherein the nano aluminum oxide powder is modified by an aluminate ester coupling agent.

### Claim 7

An electronic device, comprising:
a main body; and
a housing configured to assemble with the main body, the housing comprising:
a substrate made of aluminum or aluminum alloy;
an anodic oxide film disposed on the substrate; and
an abrasion resisting layer disposed on the anodic oxide film, the abrasion resisting layer being an alkylate silicon dioxide layer comprising nano aluminum oxide powder.

### Claim 8 (depends on 7)

The electronic device as claimed in claim 7, wherein Si—O—Si groups are formed at the interface of the alkylate silicon dioxide layer and the anodic oxide film.

### Claim 9 (depends on 7)

The electronic device as claimed in claim 7, wherein the nano aluminum oxide powder comprises particles having an average diameter of about 30 nm to about 60 nm, the nano aluminum oxide powder has a mass percentage of about 60% to about 85% in the abrasion resisting layer.

### Claim 10 (depends on 7)

The electronic device as claimed in claim 7, wherein the anodic oxide film defines a plurality of micro-pores, the nano-aluminum oxide powder fills the micro-pores and attaches on the anodic oxide film.

### Claim 11 (depends on 7)

The electronic device as claimed in claim 7, wherein the anodic oxide film defines a plurality of micro-pores, the micro-pores are filled by colorant and sealing agent, the nano aluminum oxide powder attaches on the anodic oxide film.

### Claim 12 (depends on 7)

The electronic device as claimed in claim 7, wherein the nano aluminum oxide powder is modified by an aluminate ester coupling agent.