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P‐113: Color Management for Multiple‐Primary Flexible Cholesteric‐LCD
Author(s) -
Jheng ChengFu,
Chen HuangMing P.,
Cheng WeiChung,
Huang JihFon
Publication year - 2010
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.3500225
Subject(s) - cyan , gamut , primary color , chromaticity , materials science , cholesteric liquid crystal , liquid crystal display , lightness , optoelectronics , viewing angle , reflectivity , liquid crystal , optics , physics
The reflective cholesteric liquid crystal display suffers from voltage‐induced color shift and viewing angle‐dependent color shift. In this paper, three solutions are presented to overcome these problems. First, four types of cholesteric liquid crystals were prepared and characterized to find the best mixture with the lowest voltage‐induced color shift and reflectance reduction. Secondly, 5‐primary (red, yellow, green, cyan and blue) cholesteric liquid crystals were prepared such that the color gamut and reflectance were enhanced. Finally, the viewing angle‐dependent color shift was characterized and then compensated by adjusting their chromaticity by using red/green/blue LED light sources.