Active solid-state devices (e.g. – transistors – solid-state diode – Housing or package – Insulating material
Patent
1991-01-29
1993-03-16
Hille, Rolf
Active solid-state devices (e.g., transistors, solid-state diode
Housing or package
Insulating material
257722, H01L 2330, H01L 2334, H01L 2336
Patent
active
051949350
ABSTRACT:
The plastic encapsulated semiconductor device according to the present invention has a semiconductor chip, leads, and members for electrically connecting these parts to each other. A part of leads, the semiconductor chip and the connecting members are encapsulated with a plastic to form a package. The plate type plastic fins formed on the surface of and integrally with the package are divided in two directions perpendicular to each other thereby forming, for example, rows and columns of fins or fin segments, on the package surface. Therefore, the semiconductor device according to the present invention can be molded easily by a transfer molding. It has a high reliability with respect to the prevention of cracks in the plastic, and a low thermal resistance, and is most suitably used to obtain a high-density package mounting structure.
REFERENCES:
patent: 3548927 (1970-12-01), Spurling
patent: 4369838 (1983-01-01), Asanuma et al.
patent: 4878106 (1989-10-01), Sachs
patent: 4899210 (1990-02-01), Lorenzetti et al.
Kawai Sueo
Kitano Makoto
Kohno Ryuji
Murakami Gen
Nishimura Asao
Clark S. V.
Hille Rolf
Hitachi , Ltd.
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