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Drive method of an electro-optical device, a drive circuit and an electro-optical device and electronic apparatus

  • US 20030137499A1
  • Filed: 11/20/2002
  • Published: 07/24/2003
  • Est. Priority Date: 12/11/2001
  • Status: Active Grant
First Claim
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1. A drive circuit for an electro-optical device, including a display portion having pixels arranged in a matrix with electro-optical material of which a light transmittance ratio is changed by applying voltage, supplying on-voltage for making the light transmittance ratio be saturated, or off-voltage for making the light transmittance ratio be a non-transmissive state to the display portion, and implementing sub field drive to realize gray scale display in response to the ratio of an optical transmissive state to a non-transmissive state of the electro-optical material per unit time and time ratio, comprising;

  • a first pixel driving means, driving each of the pixels with each sub field as a unit of control that is formed by dividing a field into plural portions on a time axis, and driving one of the pixels located at a predetermined position in an image by a first sub field drive pattern that is an arranged pattern of a sub field of applying the off-voltage and a sub field of applying the on-voltage; and

    a second pixel driving means driving the pixel with each sub field as a unit of control that is formed by dividing a field into plural portions on a time axis, and driving another of pixels adjacent to the pixel located at the predetermined position in an image by at least one second sub field drive pattern differentiated from the first sub field drive pattern;

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