Volume Photo-Aligned Retarders

Hubert SEIBERLE   Thomas BACHELS   Carsten BENECKE   Mohammed IBN-ELHAJ   

Publication
IEICE TRANSACTIONS on Electronics   Vol.E90-C   No.11   pp.2088-2093
Publication Date: 2007/11/01
Online ISSN: 1745-1353
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Electronic Displays)
Category: INVITED
Keyword: 
LPP ,  LCP ,  photo-alignment ,  volume photo-alignment ,  optical retarder ,  

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Summary: 
Coated retarders based on liquid crystal materials are typically aligned by brushing or photo-alignment. Recently, we have managed to combine the aligning and retarder function into a single material. Alignment of the new volume photo-alignable retarder (VPR-) material is induced in the bulk upon exposure to linearly polarized light. The new alignment mechanism opens up a new dimension for the design of optical retarders, especially when combined with conventional surface alignment, which allows to induce complex tilt and twist profiles.