Optical element, process for producing the same, substrate for liquid crystal alignment, liquid crystal display device, and birefringent material
US7622166B2 · kind B2 · utility
2Cited by
10References
25Claims
0Family size
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Key dates
| Filing date | Nov 24, 2004 |
| Grant date | Nov 24, 2009 |
| Priority date | — |
| Expiry date | Oct 27, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2413/03
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical element and a process for producing the optical element are provided. The optical element includes a light transparent substrate and a first birefringence layer provided on the substrate. The first birefringence layer includes a polymerizable liquid crystal having rodlike molecules and a coupling agent and/or a surfactant that homeotropically align the polymerizable liquid crystal to form a crosslinked polymer in a state of homeotropic alignment. The crosslinked polymer has a three-dimensionally crosslinked structure wherein the polymerizable liquid crystal having rodlike molecules holds homeotropic alignment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.