# US 11,306,022 B2 · Casing, electronic device, and casing production method

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- Number: US 11,306,022 B2
- Document ID: US11306022B2
- Status: Granted
- Kind: B2
- Application number: 16/217,393
- Filed: 2018-12-12
- Published: 2019-06-27
- Granted: 2022-04-19
- Earliest claimed: 2017-12-27
- Assignees: Fujitsu Limited
- Applicants: Fujitsu Limited
- Inventors: Koji Omote; Koichi Kimura
- Web page: https://patentgrep.com/patent/US11306022B2

## CPC

- C03C 17/3411: {with at least two coatings of inorganic materials (C03C17/36, C03C17/42 take precedence)}
- B32B 7/12: using interposed adhesives or interposed materials with bonding properties
- B32B 17/10: of synthetic resin
- C03C 3/085: containing an oxide of a divalent metal
- C03C 17/42: at least one coating of an organic material and at least one non-metal coating
- C03C 21/002: {to perform ion-exchange between alkali ions (C03C21/005 takes precedence)}
- H05K 5/03: Covers
- C03C 2217/78: Coatings specially designed to be durable, e.g. scratch-resistant
- C03C 2218/365: Coating different sides of a glass substrate
- C03C: CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS

## Abstract

A casing includes a plate-shaped cover glass for use in an exterior portion of an article; an inorganic coating which covers an end surface of the cover glass; and a resin coating which is at least partially overlaid on the inorganic coating, and which forms an outer edge of the cover glass.

## Claims

### Claim 1

A casing, comprising:
a plate-shaped cover glass that includes a first surface and a second surface which is opposite side of the first surface, and used for an exterior portion of an article;
an inorganic coating that exposes the first surface and the second surface and covers an end surface of the cover glass that connects the first surface and the second surface; and
a resin coating that at least partially covers the inorganic coating so as to be separated from the cover glass and forms an outer edge of the cover glass.

### Claim 2 (depends on 1)

The casing according to claim 1, wherein
the cover glass is a glass, front and back surfaces of which are formed by reinforcing layers, and
the inorganic coating covers the end surface of the cover glass in which a naked layer is exposed.

### Claim 3 (depends on 1)

The casing according to claim 1, wherein
the cover glass is a glass, front, back, and end surfaces of which are formed by a reinforcing layer, and
the inorganic coating is overlaid at least on a part of the reinforcing layer forming the end surface of the cover glass.

### Claim 4 (depends on 1)

The casing according to claim 1, wherein
the cover glass is a glass in which the end surface is formed by a surface gradually inclined from an edge of the front surface, and
the resin coating forms the outer edge of the cover glass at an edge of the end surface of the cover glass.

### Claim 5 (depends on 1)

The casing according to claim 1, wherein
the end surface of the cover glass includes defects, and
the inorganic coating is filled into cavities of the defects.

### Claim 6 (depends on 1)

The casing according to claim 1, wherein
the resin coating covers a top surface of the inorganic coating parallel to the end surface of the cover glass, and
a side surface of the inorganic coating perpendicular to the end surface of the cover glass is exposed.

### Claim 7 (depends on 1)

The casing according to claim 1, wherein the inorganic coating and the resin coating are provided over an entire outer peripheral edge of the cover glass.

### Claim 8 (depends on 1)

The casing according to claim 1, wherein
the top surface of the inorganic coating is a flat surface, and
the resin coating is formed in a semi-cylindrical shape on the flat surface.

### Claim 9 (depends on 1)

The casing according to claim 1, wherein the resin coating is formed of an ultraviolet curable resin.