Matrix type liquid crystal display device with data electrode driving circuit in which display information for one screen is written into and read out from display memory at mutually different frequencies

摘要

A liquid crystal display device includes N (N is a positive integer except zero) data electrodes, M (M is a positive integer except zero) scan electrodes, a liquid crystal display panel having pixels located at crosspoints between said data electrodes and said scan electrodes, and a data electrode driving circuit. The data electrode circuit has a memory unit from or into which the information information is read or written, a write control circuit for controlling a write of the display information into a memory area of the memory unit, a read control circuit for simultaneously reading the display information corresponding to N data electrodes from the memory area at a different period of the writing period, and an output circuit for converting the display information read from the memory unit into the corresponding voltage and feeding the display voltage to the data electrode.