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Liquid crystal display apparatus having a film layer including polyaniline

  • US 5,689,320 A
  • Filed: 05/03/1995
  • Issued: 11/18/1997
  • Est. Priority Date: 04/28/1993
  • Status: Expired due to Fees
First Claim
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1. A liquid crystal apparatus, comprising a liquid crystal device of the type comprising a pair of oppositely disposed electrode plates having thereon a group of scanning electrodes and a group of data electrodes, respectively, and a ferroelectric liquid crystal layer disposed between the pair of electrode plates so as to form a pixel at each intersection of the scanning electrodes and data electrodes;

  • and drive means including scanning signal application means and data signal application means for writing plural times in each pixel to form a domain wall separating regions of different optical states in the pixel to effect a desired gradational display,wherein a film layer comprising polyaniline and having a volume resistivity of 104 -108 ohm.cm is disposed between the ferroelectric liquid crystal layer and at least one of the scanning electrodes and the data electrodes.

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