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METHOD AND APPARATUS FOR DRIVING LIQUID CRYSTAL DISPLAY PANEL

  • US 20020122041A1
  • Filed: 02/16/1999
  • Published: 09/05/2002
  • Est. Priority Date: 03/18/1998
  • Status: Active Grant
First Claim
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1. A liquid crystal display apparatus, comprising:

  • an active matrix type liquid crystal panel in which potentials of respective data lines are applied to respective display electrodes of a selected display line via respective switching devices of said selected display line, said selected display line corresponding to a selected one of scanning lines;

    a data driver for applying said potentials to said respective data lines and renewing said potentials at every horizontal cycle;

    a scanning driver for providing scanning pulses to said respective scanning lines in line-sequence; and

    a control circuit for causing a timing of the rear edge of a scanning pulse provided to a predetermined scanning line to coincide with a time when said potentials of said data lines is renewed, wherein said predetermined scanning line is one corresponding to an addition of picture line to or a reduction of picture line from a picture to be displayed, in order to compensate a difference between the number of said scanning lines and that of picture lines of said picture to be displayed.

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