Liquid crystal display device
US8125597B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 29, 2008 |
| Grant date | Feb 28, 2012 |
| Priority date | — |
| Expiry date | Dec 19, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2413/01
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A liquid crystal display device includes a pair of polarizing films; a liquid crystal cell that is sandwiched between the pair of polarizing films; a retardation layer (A) of 70 μm or less in thickness, which is disposed between the liquid crystal cell and one of the pair of polarizing films; and a retardation layer (B) of 70 μm or less in thickness, which is disposed between the liquid crystal cell and the other of the pair of polarizing films, wherein the retardation layers (A) and (B) satisfy following formulae (1) to (3):RthU>RthD Formula (1):−20 nm≦RthD≦20 nm Formula (2):20 nm<RthU≦60 nm Formula (3):wherein RthU and RthD represent a retardation in a thickness direction at a wavelength of 550 nm of the retardation layer (A) and the retardation layer (B), respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.