Patent ID: 9323118
Filing Date: 2016-04-26
CPC Classification: G02F

Claim Text:
1. A display device providing a double-sided display, comprising: a first liquid crystal cell, comprising a first substrate, a first pixel electrode layer, a first common electrode layer and a first cholesteric liquid crystal layer filled between the first pixel electrode layer and the first common electrode layer; and a second liquid crystal cell laminated with the first liquid crystal cell, comprising a second substrate, a second pixel electrode layer, a second common electrode layer and a second cholesteric liquid crystal layer filled between the second pixel electrode layer and the second common electrode layer, wherein the first pixel electrode layer of the first liquid crystal cell and the second pixel electrode layer of the second liquid crystal cell are laminated and connected with each other, and a display surface of the first liquid crystal cell providing a first display side of the double-sided display and a display surface of the second liquid crystal cell providing a second display side of the double-sided display are oriented oppositely; and the polarization property of the cholesteric liquid crystal filled in the first cholesteric liquid crystal layer is opposite to that of the cholesteric liquid crystal filled in the second cholesteric liquid crystal layer, wherein a transparent state and a double-side display state are achieved by controlling voltage to switch the cholesteric liquid crystal within the respective two cholesteric crystal cells between a plane texture and a vertical orientation.