LIQUID CRYSTAL DISPLAY ELEMENT AND ITS DRIVING METHOD

摘要

A liquid crystal display element where a picture is displayed by using a liquid crystal layer having memory property and occurrence of an after image due to printing can be reduced even if printing occurs, and a driving method of the element are provided. The element is provided with a memory property display part which has a cholesteric liquid crystal layer, displays the picture when voltage is applied to the cholesteric liquid crystal layer and can hold display of the picture without power, a driving condition storage part comprising voltage and an applying period of voltage and storing a plurality of different driving conditions and a control part judging a display period when the picture during display is displayed when the picture displayed in the memory property display part is rewritten into a new picture, acquiring the driving condition corresponding to the display period from the driving condition storage part and displaying the new picture on the memory property display part based on the acquired driving condition.