Retardation layer and liquid crystal display apparatus using the same
US7719643B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 20, 2004 |
| Grant date | May 18, 2010 |
| Priority date | — |
| Expiry date | Apr 29, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/3016
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A retardation layer capable of effectively restraining the display quality deterioration without generating a bright and dark pattern in the display image even when a retardation layer is disposed in between a liquid crystal cell and a polarizing plate. The retardation layer includes a plurality of minute units (domains) having molecular structure of cholesteric structure. Moreover, in the retardation layer, the helical pitch of the molecular structure is adjusted such that the selective reflected wavelength of the selected reflected light deriving from the molecular structure is shorter than the wavelength of the incident light on the retardation layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.