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Simple-matrix liquid crystal driving method, liquid crystal driver, and liquid crystal display apparatus

  • US 20080042964A1
  • Filed: 06/28/2007
  • Published: 02/21/2008
  • Est. Priority Date: 06/30/2006
  • Status: Abandoned Application
First Claim
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1. A method for driving a simple-matrix liquid crystal panel in which row electrodes of the liquid crystal panel are simultaneously driven in blocks of three row electrodes by a multi-line addressing drive system using an orthogonal matrix and four gradations per pixel of the liquid crystal panel are displayed for every three frames by a frame-rate-control gradation system, comprising:

  • using a cyclic orthogonal matrix with three rows and four columns as the orthogonal matrix, wherein the three rows correspond to the three row electrodes in at least one of the blocks;

    generating three gradation palettes having different phases of ON/OFF data of intermediate gradations;

    generating a frame-rate-control phase table for an entire screen of the liquid crystal panel in which the three gradation palettes are distributed so that a sequence direction of the ON/OFF data of the three gradation palettes coincides with a circulation direction of data of the cyclic orthogonal matrix, and assigning a predetermined gradation palette to each of the pixels of the liquid crystal panel;

    simultaneously updating frames of the frame-rate-control gradation system and column vectors of the cyclic orthogonal matrix on a field-by-field basis to perform drive control and gradation control of each of the pixels of the liquid crystal panel; and

    completing gradation display of each of the pixels of the liquid crystal panel for 12 fields constituting the three frames of the frame-rate-control gradation system.

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