Patent · US Expired

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 dateMay 18, 2005
Grant dateMar 2, 2010
Priority date
Expiry dateMar 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.