LIQUID CRYSTAL DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To enable prescribed work for a vertical retrace line interval by generating a signal showing a pseudo-scanning period. SOLUTION: A liquid crystal display device is characterized in that it is provided with a means for counting the length of the vertical retrace line interval, a means for detecting the beginning of the vertical retrace line interval, a means for generating a signal showing a pseudo-scanning period on the basis of an output of the means for detecting the beginning of the vertical retrace line interval, and a means for giving a prescribed signal to a liquid crystal cell drive circuit by judging a prescribed timing from the means for counting the length of the retrace line interval on the basis of an output of the mean for generating the signal showing the pseudo-scanning period.