Patent ID: 7193601

Claim:
An active matrix LCD having column electrodes for display signals; row electrodes for scanning, the row electrodes being orthogonal to the column electrodes; pixels arranged in a matrix at intersections of the column and row electrodes; a column driver to sequentially supply to the column electrodes display signals in a display signal period of each horizontal scan period and a reset voltage in part or in whole, of a horizontal blanking period of each horizontal scan period; and a row driver to sequentially supply row select pulses to the row electrodes, wherein the row driver comprises: a first shift register to sequentially generate first row select pulses in response to a first scan start signal; a first gate circuit to supply the first row select pulses to the row electrodes so that the display signals in respective display signal periods are written in respective rows of the pixels; a second shift register to sequentially generate second row select pulses in response to a second scan start signal; and a second gate circuit to supply the second row select pulses to the row electrodes so that the reset voltage in respective horizontal blanking periods are written in the respective rows of the pixels wherein the first row select pulses and the second row select pulses are supplied to the row electrodes at different timings.