Retardation device for a liquid crystal display
US6972816B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 12, 2003 |
| Grant date | Dec 6, 2005 |
| Priority date | — |
| Expiry date | Dec 11, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2202/22
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention is related to a retardation device for a liquid crystal display and comprises: an upper retardation device, which has a plurality of retardation layers; a lower retardation device, which has a plurality of retardation layers as well; a LC cell layer, which is between the upper retardation device and the lower retardation device. The present invention adopts a set of retardation plates organized by the upper retardation device and the lower retardation device to apply on a MVA-LCD (Multi-domain Vertical Alignment Liquid Crystal Display) with features of high contrast and wide view angles to promote the contrast and the view angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.