Liquid crystal display device with reflective material that...

Details Liquid crystal display device with reflective material that... Liquid crystal display device with reflective material that...

2006-03-07

2006-03-07

Chowdhury, Tarifur R. (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C349S097000, C349S115000

Reexamination Certificate

active

07009668

ABSTRACT:
In a method of manufacturing a liquid crystal device including a layer having a fixed cholesteric order, the patterned layer is manufactured by providing a layer comprising polymerizable cholesterically ordered material and a compound convertible by means of radiation from a non-converted to converted state. The pitch of the cholesterically ordered material is influenced by the compound in its converted state to a different extent than in its converted state. The polymerizable layer is then irradiated pattern-wise thus creating regions of different pitch. The irradiated layer is then polymerized and/or cross-linked to fix the cholesteric order thus obtained.

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S. H. Chen et al, “Communications”, Advanced Materials, VCH Verlagsgesellschapt, Weinheim, DE, vol. 11, N. 14, Oct. 1, 1999, pp. 1183-1186, XP000864822.

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