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Ferroelectric liquid crystal display apparatus and method

  • US 5,416,496 A
  • Filed: 03/19/1993
  • Issued: 05/16/1995
  • Est. Priority Date: 08/22/1989
  • Status: Expired due to Term
First Claim
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1. A method of displaying a sequence of frames of video information on a ferroelectric LCD panel having a matrix of pixels, the video information for a frame including a plurality of multi-bit video words, each video word corresponding to a respective pixel and including at least a first bit and a second bit, said method comprising the steps of:

  • (a) turning on the pixels which correspond to video words whose first bit has a predetermined value, by subjecting the pixels which correspond to video words whose first bit has the predetermined value to a voltage v-on while keeping pixels which correspond to video words whose first bit does not have the predetermined value isolated from the voltage v-on;

    (b) turning off the pixels that were turned on during step (a), by subjecting the pixels which correspond to video words whose first bit has the predetermined value to a voltage v-off while keeping pixels which correspond to video words whose first bit does not have the predetermined value isolated from the voltage v-off;

    (c) turning on the pixels which correspond to video words whose second bit has the predetermined value, by subjecting the pixels which correspond to video words whose second bit has the predetermined value to the voltage v-on while keeping pixels which correspond to video words whose second bit does not have the predetermined value isolated from the voltage v-on; and

    (d) turning off the pixels that were turned on during step (c), by subjecting the pixels which correspond to video words whose second bit has the predetermined value to the voltage v-off while keeping pixels which correspond to video words whose second bit does not have the predetermined value isolated from the voltage v-off.

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