SELECTIVELY ERASABLE EWRITER WITH USER ADJUSTMENT

The invention discloses a selectively erasable ewriter with user adjustment. A liquid crystal eWriter device with user adjustable select erase includes a front substrate formed of a flexible, polymeric material. Electrically conductive layers are spaced apart from each other. A dispersion layer incl...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: CLINTON I. BRAGANZA, DUANE MARHEFKA
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention discloses a selectively erasable ewriter with user adjustment. A liquid crystal eWriter device with user adjustable select erase includes a front substrate formed of a flexible, polymeric material. Electrically conductive layers are spaced apart from each other. A dispersion layer includes a dispersion of cholesteric liquid crystal material and polymer disposed between the electrically conductive layers, wherein pressure applied to the front substrate changes a reflectance of the cholesteric liquid crystal material forming an image. Electronic circuitry is adapted to fully and selectively erase the image by applying a full erase voltage waveform and a select erase voltage waveform, respectively, to the electrically conductive layers. The image is select erased by applying theselect erase voltage waveform to the electrically conductive layers while applying pressure to the front substrate and tracing a portion of the image. At least one SELECT ERASE actuator is included in the electronic circuitr