Method for producing cholesteric liquid crystal color filters
US6909478B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2002 |
| Grant date | Jun 21, 2005 |
| Priority date | — |
| Expiry date | Jan 24, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133543
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provides a method for producing a cholesteric liquid crystal color filter having excellent color pixel resolution. The method features forming a liquid crystal layer which includes a cholesteric liquid crystal composition containing at least a liquid crystal compound, a photoreactive chiral dopant, and a polymerization initiator; and forming partition walls at portions corresponding to a boundary of each of pixels to be formed, by irradiating those portions through a mask with ultraviolet light at a wavelength to which the polymerization initiator is sensitive, either before or after the pixels are formed in the liquid crystal layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.