Patent ID: 11886061
Assignee: KENT DISPLAYS, INC.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 31:
32. A writing device comprising:
a liquid crystal layer including cholesteric liquid crystal material;
electrically conductive layers between which said liquid crystal layer is disposed;
a front writing surface layer that is transparent and a back support layer between which said electrically conductive layers and said liquid crystal layer are disposed;
a seal confining said cholesteric liquid crystal material;
wherein said cholesteric liquid crystal material changes in texture when writing by application of pressure to said front writing surface layer to create an image;
wherein said electrically conductive layers are adapted to enable a voltage waveform to be applied thereto that erases the image;
wherein said writing device is resilient to bending including twist bending and does not include a housing, throughout a region of said confined cholesteric liquid crystal material where writing occurs, enabling said writing device to be bent to a radius of curvature of 100.0 millimeters for 10 repetitions of said bending and after each of the repetitions of said bending said voltage waveform completely erases the image, initializing said writing device.