Optical film, optical compensation film, polarizing plate, liquid crystal display unit and self luminous display unit
US7671947B2 · kind B2 · utility
3Cited by
0References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 18, 2005 |
| Grant date | Mar 2, 2010 |
| Priority date | — |
| Expiry date | Mar 21, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/3083
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical film which has Re(λ) and Rth(λ) fulfilling the following two formulae:0≦Re(590)≦10|Rth(590)|≦25wherein Re(λ) is a retardation value in plane (nm) at a wavelength of λ nm; and Rth(λ) is a retardation value in film thickness direction (nm) at a wavelength of λ nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.