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Semiconductor device having MOSFET of trench structure and method for fabricating the same

  • US 6,798,018 B2
  • Filed: 06/13/2002
  • Issued: 09/28/2004
  • Est. Priority Date: 06/14/2001
  • Status: Active Grant
First Claim
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1. A semiconductor device comprising:

  • a semiconductor layer;

    at least one recessed trench formed in the semiconductor layer so as to define transistor cells of a trench structure;

    a gate oxide film extending along a bottom and side walls of the recessed trench;

    a gate electrode disposed inside the recessed trench;

    a gate pad disposed continuously to the gate electrode; and

    a gate wiring comprised of a metal film, the gate wiring being in contact with the gate pad, wherein the gate pad is disposed inside a recessed part formed in a same depth as the recessed trench and the gate wiring is in contact with the gate pad inside the recessed part.

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