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A novel polarizer‐free dye‐doped polymer‐dispersed liquid crystal for reflective TFT displays
Author(s) -
Masutani Akira,
Roberts Tony,
Schüller Bettina,
Yasuda Akio,
Sakaigawa Akira,
Cross Graham,
Bloor David
Publication year - 2004
Publication title -
journal of the society for information display
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 52
eISSN - 1938-3657
pISSN - 1071-0922
DOI - 10.1889/1.1825704
Subject(s) - polarizer , materials science , liquid crystal , polymer , liquid crystal display , doping , thin film transistor , optoelectronics , dichroic glass , voltage , optics , composite material , birefringence , electrical engineering , physics , layer (electronics) , engineering
— A novel preparation method for dichroic dye‐doped polymer‐dispersed liquid crystals has been developed. This was achieved by creating a porous polymer matrix first by washing out the liquid crystal from a polymer‐dispersed liquid crystal (PDLC), which is then refilled with dye‐doped liquid crystal. Optimizing the liquid crystal used in the refilling results in decreased turn‐on voltage and faster response time. Poster‐standard reflectivity and newspaper‐standard contrast was demonstrated with a 3.8‐in. QVGA reflective TFT display with a drive voltage of 10 V.