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Integrated micromechanical sensor device and process for producing it

  • US 6,133,059 A
  • Filed: 02/25/1998
  • Issued: 10/17/2000
  • Est. Priority Date: 09/21/1993
  • Status: Expired due to Fees
First Claim
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1. A process for producing an integrated micromechanical sensor device, which comprises:

  • a) forming a body with an insulating layer disposed on a substrate, and a monocrystalline silicon layer disposed on the insulating layer, the silicon layer being of a doping type;

    b) etching trenches with trench walls into the silicon layer and to a surface of the insulating layer;

    c) doping the trench walls;

    d) producing a transistor configuration in a first region of the silicon layer; and

    e) removing the insulating layer below a second region of the silicon layer.

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