# US 6,723,917 B1 · Protective shield for against damaging circuit board and for safeguarding chip

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- Number: US 6,723,917 B1
- Document ID: US6723917B1
- Status: Granted
- Kind: B1
- Application number: 10/435,544
- Filed: 2003-05-12
- Granted: 2004-04-20
- Earliest claimed: 2003-05-12
- Assignees: Gainward Co., Ltd.
- Inventors: Jui-Tung Wang
- Web page: https://patentgrep.com/patent/US6723917B1

## CPC

- H05K 9/0026: {integrally formed from metal sheet}
- H10W 40/43: by flowing gases, e.g. forced air cooling
- H10W 40/641: {Snap-on arrangements, e.g. clips}
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10

## Abstract

A protective metal shield for against damaging a circuit board and for safeguarding a chip includes a fixed metal shield above a chip on a circuit board. The metal shield has five sealed planes and an opening facing downward, and an underside of a top portion thereof being in contact with a top surface of the chip. Above the metal shield is additionally provided with cooling fins. Using the aforesaid structure, the metal shield is covered above the chip, thereby protecting the chip from man-made scratches and damages.

## Claims

### Claim 1

A protective metal shield for against damaging a circuit board and for safeguarding a chip comprising a metal shield having five sealed planes and an opening facing downward, and an underside of a top portion thereof being in contact with a top surface of the chip; wherein, above the metal shield is additionally provided with cooling fins, and the metal shield is clamped and fastened by mounting the cooling fins onto the circuit board; a periphery of the chip is disposed with a plurality of insertion openings, and bottom portions of at least two corresponding side walls of a periphery of the metal shield are provided with flanges having fastening apertures, thereby directly fastening the metal shield onto the circuit board by penetrating two fastening nails through the flanges.

### Claim 2 (depends on 1)

The protective metal shield for against damaging a circuit board and for safeguarding a chip in accordance with claim 1, wherein side walls of the periphery of the metal shield are slightly expanded outward.

### Claim 3 (depends on 1)

The protective metal shield for against damaging a circuit board and for safeguarding a chip in accordance with claim 1, wherein the outwardly expanded angle of the side walls of the periphery of the metal shield is preferably about 30° to the vertical.

### Claim 4 (depends on 1)

The protective metal shield for against damaging a circuit board and for safeguarding a chip in accordance with claim 1, wherein a contact plane between the metal shield and the chip is provided with heat conducting paste.

### Claim 5 (depends on 1)

The protective metal shield for against damaging a circuit board and for safeguarding a chip in accordance with claim 1, wherein a contact plane between the metal shield and the cooling fins above is provided with heat conducting paste.