Formation of optical films by photo-polymerisation of liquid crystalline acrylates and application of these films in liquid crystal display technology

J. Lub, D. J. Broer, R. T. Wegh, E. Peeters, B.M.I. Van Der Zande

Research output: Contribution to journalArticleAcademicpeer-review

43 Citations (Scopus)
2 Downloads (Pure)

Abstract

Photo-polymerisation of liquid crystalline di-acrylates is a very versatile method to produce homogeneously aligned polymer films. The orientation of the liquid crystals and hence the anisotropic optical properties of the films are frozen in by the photo-polymerisation process. Homogeneously aligned nematic liquid crystals form birefringent films that find application as retarders, while splayed nematic liquid crystalline mixtures form, angle dependent birefringent films that find application as wide viewing angle foils. In addition, cholesteric liquid crystals form reflecting films that can be used as colour filters or polarisers and smectic liquid crystals form highly ordered films that find application as polarisers. Moreover, modulating the light during the manufacturing process either in lateral or in-depth direction of the film can create complex structures not attainable with liquid crystalline polymers. All these films are mechanically, thermally and chemically stable and therefore very suitable to be processed in liquid crystal display manufacturing as additional films or as in-cell optical components.

Original languageEnglish
Pages (from-to)77-99
Number of pages23
JournalMolecular Crystals and Liquid Crystals
Volume429
DOIs
Publication statusPublished - 1 Dec 2005
Externally publishedYes

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