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US 11,029,549 B2Granted
Liquid crystal writing device
AssigneeWicue, Inc.
InventorFenghua Li
Life of this patent
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AssigneeWicue, Inc.
InventorFenghua Li
Estimating the term…
Embodiments are disclosed for selectively and partially erasing images from a liquid crystal writing device. A liquid crystal writing device according to some embodiments includes a transparent top layer, a liquid crystal layer including a plurality of liquid crystal cells beneath the transparent top layer, a matrix of electrodes, and a control circuitry. The liquid crystal layer displays an image by switching cells to a reflective state. The writing device detects a mechanical pressure applied on a pressed area, the mechanical pressure indicating a command to erase at least a portion of the image from the pressed area. The control circuitry instructs one or more electrodes from the matrix to apply an erase voltage signal to a portion of the liquid crystal cells that correspond to the pressed area, wherein the erase voltage signal switches the portion of the liquid crystal cells to the scattering state.
An electronic writing device, comprising:
A liquid crystal writing apparatus comprising a transparent top layer, a plurality of liquid crystal cells beneath the transparent top layer, and a matrix of electrodes, the liquid crystal writing apparatus further comprising:
A method for erasing from a liquid crystal writing device, the liquid crystal writing device including a transparent top layer, a plurality of liquid crystal cells beneath the transparent top layer, and a matrix of electrodes, the method comprising:
Dependencies are inferred from the claim text.