Liquid crystal display including filter means with 10-70% transmittance in the selective reflection wavelength range
US6597419B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2000 |
| Grant date | Jul 22, 2003 |
| Priority date | — |
| Expiry date | Jun 28, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2201/343
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed is a reflective type multilayer liquid crystal display having a blue liquid crystal light control layer, a green liquid crystal light control layer, and a red liquid crystal light control layer stacked in this order from a viewing side. The half width of a reflection spectrum of any of the liquid crystal light control layers is larger than that of the adjoining liquid crystal light control layer on the viewing side. Further, the maximum reflectance of the reflection spectrum of any of the liquid crystal light control layers is higher than that of the adjoining liquid crystal light control layer on the viewing side. In one embodiment, the chromaticity coordinate position, in the XYZ colorimetric system, of a color displayed when all the liquid crystal light control layers are in a state of reflecting at the maximum reflectance is present in a range within a distance of 0.02 from the chromaticity coordinate position of the standard white point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.