Browse Prior Art Database

Semiconductor Device Package

IP.com Disclosure Number: IPCOM000096391D
Original Publication Date: 1963-May-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 40K

Publishing Venue

IBM

Related People

Gow, J: AUTHOR

Abstract

A miniature package for extremely small semiconductor devices such as tunnel diodes includes metal disk 10 of a material such as KOVAR* having a centrally disposed rod-like support 11 either welded to or formed integrally with it. Glass bead 12 is bonded to disk 10 and support 11 and has bonded to its upper periphery in spaced relation to the support a KOVAR washer 13. The interfaces between the members just described are of substantial area to provide reliable hermetic seals. Disk 10 can have a diameter of about fifty mils and a thickness of about five mils, the support 11 a diameter such as from one to fifteen mils, and the outer diameter of the washer 13 can be about eighty mils.

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Semiconductor Device Package

A miniature package for extremely small semiconductor devices such as tunnel diodes includes metal disk 10 of a material such as KOVAR* having a centrally disposed rod-like support 11 either welded to or formed integrally with it. Glass bead 12 is bonded to disk 10 and support 11 and has bonded to its upper periphery in spaced relation to the support a KOVAR washer 13. The interfaces between the members just described are of substantial area to provide reliable hermetic seals. Disk 10 can have a diameter of about fifty mils and a thickness of about five mils, the support 11 a diameter such as from one to fifteen mils, and the outer diameter of the washer 13 can be about eighty mils.

Mounted on support 11 as by soldering is a semiconductor device 14 such as a tunnel diode. A twin lead 15 forms an electrical connection between the terminal 16 and diametrically opposed points 17, 17 on the washer 13. A metal cap 18 is welded to the washer 13 to complete the hermetically sealed package. *KOVAR is a trademark of Westinghouse Electric Corp.

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