Electricity: electrical systems and devices – Housing or mounting assemblies with diverse electrical... – For electronic systems and devices
Patent
1993-02-12
1994-05-10
Picard, Leo P.
Electricity: electrical systems and devices
Housing or mounting assemblies with diverse electrical...
For electronic systems and devices
361707, 361748, 361784, 361807, 174 1705, 174 524, 174259, 257686, 257779, 439 65, H05K 702
Patent
active
053114027
ABSTRACT:
A semiconductor device having an IC (Integrated Circuit) chip packaged on a circuit board, and a cap for hermetically sealing the chip. The cap is bonded to the circuit board at the edges of an open end thereof and bonded to the chip at the underside or bottom thereof. To accurately position the chip on the circuit board, the circuit board is provided with a groove or a shoulder in a position where it faces the edges of the open end of the cap. After the chip has been positioned on the circuit board, the cap is bonded to the circuit board via the groove or the shoulder.
REFERENCES:
patent: 4949224 (1990-08-01), Yamamura et al.
patent: 5013871 (1991-05-01), Mahulikar et al.
patent: 5132875 (1992-07-01), Plesinger
patent: 5136469 (1992-08-01), Carusillo et al.
Kobayashi Kenzi
Mori Hajime
Yamaguti Yukio
NEC Corporation
Picard Leo P.
Whang Young
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