Patent ID: 7138972
Filing Date: 2006-11-21
Classification: G09G

Abstract:
1. A drive method for a liquid crystal device during a frame period comprising the steps of: (a) applying a scanning signal to each of a plurality of scanning electrodes, said scanning signal including a selection signal during a selection period and a non-selection signal during a non-selection period; and (b) applying a data signal to each of a plurality of signal electrodes based on the waveform of said scanning signal and on display data representing an image having a gray scale to be displayed by the liquid crystal device; wherein step (a) further includes the step of: (c) applying a weighted voltage in accordance with the display data in each of the selection periods; wherein the display data comprises q bits, q being a positive integer, wherein each of the N selection periods is divided further into k portions, k being a positive integer greater than q, and wherein at least one of the k portions is allocated to the display data corresponding to one of the bits to reduce the number of applied voltage levels.