Active solid-state devices (e.g. – transistors – solid-state diode – Lead frame – With heat sink means
Reexamination Certificate
2007-07-17
2007-07-17
Baumeister, B. William (Department: 2891)
Active solid-state devices (e.g., transistors, solid-state diode
Lead frame
With heat sink means
C257S796000, C257SE23104
Reexamination Certificate
active
11262967
ABSTRACT:
A semiconductor device mountable on a wiring board with the bottom surface being opposed to the wiring board including a semiconductor chip; a mold resin encapsulating the semiconductor chip; a first heat spreader joined to the semiconductor chip on the bottom surface side with both ends protruding from the mold resin, the first heat spreader being capable of being joined to the wiring board at both ends; and a second heat spreader joined to the semiconductor chip on a top surface side with both ends thereof protruding from the mold resin, the second heat spreader being capable of being joined to the wiring board at both ends. One of the heat spreaders is a lead frame electrically connected to the semiconductor chip. The first and second heat spreaders are substantially entirely covered with the mold resin on the bottom surface side and the top surface side, respectively.
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Baumeister B. William
Farahani Dana
Rabin & Berdo PC
Rohm & Co., Ltd.
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