LIQUID CRYSTAL DISPLAY DEVICE, PARTICULARLY IN RELATION TO USING A LIQUID CRYSTAL MATERIAL HAVING SPONTANEOUS POLARIZATION AND DISPLAYING AN IMAGE BY DRIVING ON/OFF OPERATIONS OF A SWITCHING ELEMENT

摘要

PURPOSE: An LCD device is provided to continuously apply voltages having the same polarity to a liquid crystal material at more than two times through a switching element within one interval, thereby realizing high optical transmissivity even though a driving voltage is low. CONSTITUTION: In each sub frame, a data record scanning is continuously carried out for two times, and a data remove scanning is continuously performed for two times. A liquid crystal responds to a voltage applied once, and responds to another voltage applied next since the liquid crystal is accumulated in a liquid crystal cell. According to a combination of size of voltages applied for many times to a liquid crystal within each sub frame, more gradations than output gradations of a driver are displayed.