Front/rear projector type image display device stores specific and common values associated with video data to be displayed by each liquid crystal element of valve and group of at least two adjacent elements respectively

摘要

A drive circuit connected to mirror electrode of each liquid crystal element of a valve, stores specific values and common values associated with the video data to be displayed by each element and a group of at least two adjacent elements (10,10'), respectively. The stored values are applied to the mirror electrodes, so that video data corresponding to specific and common values are displayed alternately.