Liquid crystal displays
US7553521B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 19, 2005 |
| Grant date | Jun 30, 2009 |
| Priority date | — |
| Expiry date | Apr 23, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133788
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention provides a liquid crystal displays using a ferroelectric liquid crystal, which can give mono-domain alignment of ferroelectrical liquid crystal without forming orientation defects and which is so remarkably good in orientation stability that the orientation thereof can be maintained even if the temperature of the liquid crystal is raised to the phase transition point or higher.The invention provides liquid crystal displays comprising a ferroelectric liquid crystal sandwiched between two substrates, wherein an electrode and a photo alignment film are each successively formed, the first of which is a photoreactive material which generates photoreaction to give anisotropy to the photo alignment film, and the constituent material of the second film is an optically isomerizable material comprising an optically isomerization-reactive compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.