Active solid-state devices (e.g. – transistors – solid-state diode – Field effect device – Having insulated electrode
Reexamination Certificate
2007-08-28
2007-08-28
Schillinger, Laura M. (Department: 2813)
Active solid-state devices (e.g., transistors, solid-state diode
Field effect device
Having insulated electrode
C257S355000, C257S275000
Reexamination Certificate
active
10772585
ABSTRACT:
With a microwave FET, the internalized Schottky junction capacitance or pn junction capacitance is small and these junctions are weak against static electricity. However, with a microwave device, a protecting diode could not be connected since the increase of parasitic capacitance resulting from this method causes degradation of the high frequency characteristics. Therefore, to eliminate this problem, a semiconductor device is provided, wherein two paths, extending from a gate electrode pad to a gate electrode on an operating region, are arranged, with one path running near a source electrode pad, the other path running near a drain electrode pad, and at the respective parts where a path becomes close to a pad, the abovementioned protecting elements are connected between the gate electrode and source electrode and between the gate electrode and drain electrode to improve the electrostatic breakdown voltage of the FET from approximately 100V to 700V.
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Asano Tetsuro
Hiraj Toshikazu
Sakakibara Mikito
Morrison & Foerster / LLP
Sanyo Electric Co,. Ltd.
Schillinger Laura M.
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