Homeotropically aligned liquid crystal layer and process for the homeotropic alignment of liquid crystals on plastic substrates
US7170575B2 · kind B2 · utility
8Cited by
21References
28Claims
0Family size
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Key dates
| Filing date | Aug 25, 2004 |
| Grant date | Jan 30, 2007 |
| Priority date | — |
| Expiry date | Aug 25, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133742
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Homeotropically oriented layers and films of liquid crystals especially on polymeric substrates. The layers and films, which also can be multi-layered films comprising a homeotropically aligned anisotropic film, are preparable by application of an orientation layer to the substrate. The orientation layer can be either an organic surfactant which is fixed in a matrix of a polymeric material or an inorganic thin layer such as aluminum or Al2O3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.