Invention Grant
- Patent Title: Cholesteric liquid crystal writing device with stylus erase
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Application No.: US17380812Application Date: 2021-07-20
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Publication No.: US11698563B2Publication Date: 2023-07-11
- Inventor: Todd Ernst , Nathan Hirt , Bryan Owen , Clinton Braganza , Hunter Morris
- Applicant: Kent Displays, Inc.
- Applicant Address: US OH Kent
- Assignee: Kent Displays, Inc.
- Current Assignee: Kent Displays, Inc.
- Current Assignee Address: US OH Kent
- Agency: Serbinowski PLLC
- Main IPC: G02F1/137
- IPC: G02F1/137 ; G02F1/1333 ; G06F3/0354 ; G02F1/1339

Abstract:
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.
Public/Granted literature
- US20230027561A1 CHOLESTERIC LIQUID CRYSTAL WRITING DEVICE WITH STYLUS ERASE Public/Granted day:2023-01-26
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