Active solid-state devices (e.g. – transistors – solid-state diode – Field effect device – Having insulated electrode
Reexamination Certificate
2011-04-12
2011-04-12
Luu, Chuong A (Department: 2813)
Active solid-state devices (e.g., transistors, solid-state diode
Field effect device
Having insulated electrode
C257SE29262, C257SE21410
Reexamination Certificate
active
07923771
ABSTRACT:
A semiconductor device (10) of the present invention includes: a drift layer (5) that includes a reference concentration layer (4) including an impurity of a first conductive type at a first reference concentration and a low concentration layer (3) provided under the reference concentration layer and including an impurity of the first conductive type at a concentration lower than the first reference concentration; a gate electrode (20) that is formed on an upper surface of the reference concentration layer; a pair of source regions (Sa and 8b) that are respectively provided on the reference concentration layer in the vicinity of ends of the gate electrode and include an impurity of the first conductive type at a concentration higher than the first reference concentration.
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International Search Report for PCT/JP2007/073676, mailed Mar. 11, 2008.
Doan Nga
Luu Chuong A
Nixon & Vanderhye P.C.
Shindengen Electric Manufacturing Co. Ltd.
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