Liquid-crystal display device and method for driving it

摘要

The invention relates to a liquid-crystal display device which can be produced cost-effectively and in which the information to be represented is input in an essentially optical fashion and inherently stored. This is achieved by a whole-area photoconductive layer which is provided between the liquid-crystal layer and a whole-area electrode layer as well as by switching the frequency of the alternating voltage applied to the electrode layers. <IMAGE>