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Method for driving matrix type flat panel display device

  • US 5,602,559 A
  • Filed: 02/15/1995
  • Issued: 02/11/1997
  • Est. Priority Date: 11/01/1991
  • Status: Expired due to Term
First Claim
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1. A method for driving a matrix type flat panel display device comprising a matrix of scanning electrodes and signal electrodes intersecting with each other, so that a bistable display picture element is formed at each region of intersection between said scanning and signal electrodes, each said picture element being adapted to be set in either of bright or dark states so as to achieve a multi-graduation display, said method comprising the steps of:

  • defining a frame period Tf to include plural fields, with each field composed of one or more blocks so that at least one of said fields has a number of blocks different from the numbers of blocks of other fields,dividing a plurality of scanning lines into groups so that the number of divided scanning line groups is at least equal to the total number of blocks included in said frame period Tf, andsetting writing time periods included in a first block of each field to have time periods that include selection time periods so that the selection time periods for each divided scanning line group do not overlap with the selection time periods for other groups even though the writing time periods overlap with writing time periods for at least one other group.

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