Ceramic base for a semiconductor device

Details Ceramic base for a semiconductor device Ceramic base for a semiconductor device

1990-10-15

1992-01-28

Picard, Leo P.

Electricity: conductors and insulators

Boxes and housings

Hermetic sealed envelope type

174 521, 174 524, H05K 500

Patent

active

050845950

ABSTRACT:
A ceramic base used for a semiconductor device is plate-shaped and is made of a material consisting essentially of ceramic. In plan view, the base is rectangular and has four corner portions each located between two adjacent side walls. The corner portion comprises a main bevel and two auxiliary bevels located at respective sides of the main bevel and extending to the two side walls, respectively, so that two first corners are defined between the main bevel and the auxiliary bevels, respectively, and two second corners are defined between the auxiliary bevels and the side walls of the base, respectively.

REFERENCES:
patent: 4007479 (1977-02-01), Kowalski
patent: 4288841 (1981-09-01), Gogal
patent: 4330683 (1982-05-01), Parker
patent: 4474017 (1988-05-01), Koors et al.

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