Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
July 11, 2023
0Patent Application Number
173808120
Date Filed
July 20, 2021
0Patent Citations
Patent Primary Examiner
A liquid crystal writing device is erased by a stylus. The liquid crystal writing device includes a liquid crystal layer including cholesteric liquid crystal material. A user applies pressure to a flexible substrate that changes reflectivity of the cholesteric liquid crystal material to form images on the liquid crystal writing device. The liquid crystal layer is disposed between electrically conductive layers. Writing device terminals are electrically conductive and connected to the electrically conductive layers. The stylus includes stylus electronics adapted to apply an erase voltage or erase voltage waveform to the writing device terminals.
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