Semiconductor device manufacturing: process – Packaging or treatment of packaged semiconductor – Metallic housing or support
Reexamination Certificate
2006-12-05
2006-12-05
Malsawma, Lex H. (Department: 2823)
Semiconductor device manufacturing: process
Packaging or treatment of packaged semiconductor
Metallic housing or support
C361S709000
Reexamination Certificate
active
07144762
ABSTRACT:
A semiconductor device includes a substrate having a semiconductor element mounted thereon, and a heat sink. A plurality of pins are inserted in holes in the heat sink and holes in the substrate to secure the heat sink to the substrate. The pin has an enlarged portion at one end thereof and an engaging portion at the other end thereof. An engaging member is provided to engage with the engaging portions of the pins that pass though the holes in the heat sink and the holes in the substrate and protrude from the substrate. Springs are arranged between the enlarged portions of the pins and the heat sink. In assembling the semiconductor device, the pins are held collectively by a holding member, and after the semiconductor device is assembled, the holding member is removed from the pins.
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patent: 5870286 (1999-02-01), Butterbaugh et al.
patent: 5978223 (1999-11-01), Hamilton et al.
patent: 6307747 (2001-10-01), Farnsworth et al.
patent: 2003/0159819 (2003-08-01), Lee
patent: 2005/0072558 (2005-04-01), Whitney et al.
patent: 30-64402 (1999-09-01), None
Partial Translation of Japanese Registered Utility Model No. 30-64402.
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