Optical elements comprising cholesteric liquid crystal polymers
US9671538B2 · kind B2 · utility
3Cited by
4References
27Claims
0Family size
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Key dates
| Filing date | Nov 18, 2013 |
| Grant date | Jun 6, 2017 |
| Priority date | — |
| Expiry date | Apr 3, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K19/56
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A linear photopolymerizable polymer (LPP) layer is situated to align liquid crystal molecules in a cholesteric liquid crystal polymer (Ch-LCP) layer situated at or on the LPP layers. The Ch-LCP layer includes a patterned area and an unpatterned area. The patterned area and the un-patterned area have different optical properties. The Ch-LCP layer can be tuned to transmit light of a desired frequency and handedness. Single and multiple-layered LPP/Ch-LCP and/or LPP/LCP structures can be provided as patterned polarizers, patterned retarders and other devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.