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Bridge electrodes for microelectromechanical devices

  • US 5,216,490 A
  • Filed: 08/03/1990
  • Issued: 06/01/1993
  • Est. Priority Date: 01/13/1988
  • Status: Expired due to Term
First Claim
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1. A bridge electrode assembly formed by a photolithographic process on a substrate, and for use in conjunction with a microelectromechanical transducer that includes a transducer element, said assembly comprising:

  • an electrode extending as a bridge from a first point to a second point on a surface of said substrate, and over at least a portion of said transducer element;

    a conductor in electrical contact with said bridge electrode operative to provide electrical connection to said bridge electrode;

    a buried electrode within said substrate, said buried electrode extending under at least a portion of said transducer element, and confronting said bridge electrode; and

    a conductor in electrical contact with said buried electrode, for providing electrical connection to said buried electrode, and for providing at least one of balanced application of forces and symmetry for symmetrical motion detection to said transducer element when paired and utilized with said bridge electrode.

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