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Pressure sensor with a ferroelectric liquid crystal layer

  • US 4,875,378 A
  • Filed: 01/29/1988
  • Issued: 10/24/1989
  • Est. Priority Date: 02/19/1987
  • Status: Expired due to Fees
First Claim
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1. A pressure sensor comprising:

  • a pair of substrates;

    a ferroelectric liquid crystal layer interposed between the substrates;

    an electrode arrangement formed on the substrates and including at least one pair of electrodes located on the both sides of said liquid crystal layer to pick up the voltage generated across said liquid crystal layer; and

    a means for detecting the voltage induced between said pair of electrodes, said voltage being induced by piezoelectric effect by piezoelectric effect.

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