公开(公告)号：US09651813B2

公开(公告)日：2017-05-16

申请号：US13621367

申请日：2012-09-17

申请人： Hunter Morris ,  Albert Green

发明人： Hunter Morris ,  Albert Green

IPC分类号： G02F1/1333 ,  G02F1/137 ,  G02F1/13

CPC分类号： G02F1/13338 ,  G02F1/1313 ,  G02F1/132 ,  G02F1/133305 ,  G02F1/1334 ,  G02F1/133512 ,  G02F1/1337 ,  G02F1/13718 ,  G02F2001/13345

摘要： Disclosed is liquid crystal paper and an erasing device that is not permanently connected to the liquid crystal paper. A sheet of liquid crystal paper includes flexible polymeric substrates. A polymer network or a spacer network, in which bistable cholesteric reflective liquid crystal material is dispersed, is disposed between two of the substrates. Optional alignment layers or optional electrically conductive layers sandwich the liquid crystal material therebetween. An optional layer of light absorbing material is disposed near one of the substrates. Application of pressure to an upper substrate changes a focal conic nonreflective texture of the liquid crystal material to a reflective planar texture. The erasing device applies a voltage or heat for erasing the paper by changing the reflective planar texture to the focal conic nonreflective texture.