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Stable Photopatterned Cholesteric Layers Made by Photoisomerization and Subsequent Photopolymerization for Use as Color Filters in Liquid‐Crystal Displays
Author(s) -
Lub J.,
van de Witte P.,
Doornkamp C.,
Vogels J.P.A.,
Wegh R.T.
Publication year - 2003
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200305125
Subject(s) - photopolymer , photoisomerization , materials science , cholesteric liquid crystal , liquid crystal , monomer , structural coloration , reflection (computer programming) , substrate (aquarium) , optoelectronics , layer (electronics) , coating , liquid crystal display , polymer , optics , photonic crystal , nanotechnology , composite material , organic chemistry , catalysis , chemistry , isomerization , oceanography , physics , computer science , programming language , geology
Very stable cholesteric layers with patterned reflection colors are made by coating a monomeric cholesteric mixture on a substrate followed by photoisomerization in air to tune the reflection color and photopolymerization to stabilize the layer. The layers can be used as color filters in liquid‐crystal displays (see Figure). The photopolymerization is performed in N 2 , resulting in rapid crosslinking, preventing unwanted additional color changes.