Multicolor liquid crystal writing device
US11143898B2 · kind B2 · utility
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3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 12, 2019 |
| Grant date | Oct 12, 2021 |
| Priority date | — |
| Expiry date | Sep 12, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/13775
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Described are multicolor liquid crystal writing devices that exhibit high brightness and contrast and methods for manufacturing multicolor liquid crystal writing devices that exhibit high brightness and contrast. The liquid crystals used in the devices and methods described are photosensitized using UV light to modify a reflective character of the liquid crystals and different amounts, intensities, wavelengths, or exposure durations of UV light provide for different reflective colors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.