Stable photopatterned cholesteric layers made by photoisomerization and subsequent photopolymerization for use as color filters in liquid-crystal displays

Johan Lub, Peter Van De Witte, Ciska Doornkamp, Joost P.A. Vogels, René T. Wegh

Research output: Contribution to journalArticleAcademicpeer-review

71 Citations (Scopus)

Abstract

New thermally and mechanically very stable cholesteric layers with patterned reflection colors were described. As such, the layers were made by coating a monomeric cholesteric mixture on a substate followed by a sequence of photochemical processes, namely photoisomerization and photopolymerization. In order to separate both processes, the isomerization was performed in air to avoid polymerization, and the photopolymerization was performed in nitrogen with longer-wavelength UV irradiation.

Original languageEnglish
Pages (from-to)1420-1425
Number of pages6
JournalAdvanced Materials
Volume15
Issue number17
DOIs
Publication statusPublished - 3 Sep 2003
Externally publishedYes

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