Liquid crystal display element and method of manufacturing the same
US6825903B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2001 |
| Grant date | Nov 30, 2004 |
| Priority date | — |
| Expiry date | Sep 19, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2201/343
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A liquid crystal display element comprises a polarization plates, phase difference plates, a liquid crystal layer, and selectively reflective layers for reflecting part or whole of circularly polarized light in a specific direction. The products of the respective thicknesses of the polarization plate, phase difference plate, liquid crystal layer, and selectively reflective layer and the difference between an average refractive index in a direction perpendicular to each display plane and an average refractive index in a direction parallel to the display plane are set so that the absolute value of their sum total is 50 nm or less. Each selectively reflective layer is formed of a layer having positive refractive index anisotropy and a layer having negative refractive index anisotropy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.