IMAGE DISPLAY APPARATUS AND METHOD FOR DRIVING THE SAME

摘要

An image display apparatus for providing a multilevel gray scale display on a display panel by dividing one field into a plurality of weighted subfields and then combining the plurality of subfields, comprising a motion amount determining circuit (50), a spread amount calculating circuit (52) and a spread circuit (53). The motion amount determining circuit (50) determines a motion amount from the current and preceding fields of an input image signal. The spread amount calculating circuit (52) calculates, based on the gray scale and determined motion amount of the input image signal, a spread amount for spreading a pseudo contour noise around. The spread circuit (53) uses the calculated spread amount to perform a spread process. This can reduce the pseudo contour to improve the picture quality of the motion display without any occurrence of new noise and any increase of circuit scale.