Liquid crystal panel and liquid crystal display apparatus
US7639329B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 1, 2008 |
| Grant date | Dec 29, 2009 |
| Priority date | — |
| Expiry date | Aug 9, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2413/02
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The liquid crystal panel according to an embodiment of the present invention includes, in the stated order from a viewer side: a first polarizer; a first optical compensation layer; a liquid crystal cell; a second optical compensation layer; and a second polarizer, wherein:the first optical compensation layer has an absolute value of a photoelastic coefficient of 40×10−12 (m2/N) or less, has an in-plane retardation Δnd of 90 nm to 200 nm, has relationships of the following Expressions (1) and (2), and functions as a protective layer on a liquid crystal cell side of the first polarizer; andthe second optical compensation layer has relationships of the following Expressions (3) and (4),Δnd(380)=Δnd(550)=Δnd(780) (1)nx>ny>nz (2)Rth(380)>Rth(550)>Rth(780) (3)nx=ny>nz (4).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.