Birefringent optical film, elliptically polarizing plate...

Details Birefringent optical film, elliptically polarizing plate... Birefringent optical film, elliptically polarizing plate...

2006-05-30

2006-05-30

Pyon, Harold (Department: 1772)

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

With viewing layer of specified composition

C428S001100, C349S117000, C349S118000

Reexamination Certificate

active

07052747

ABSTRACT:
The present invention provides a birefringent optical film having a high orientation for easily obtaining a desired retardation value and also a small photoelastic coefficient. The birefringent optical film includes at least two kinds of polymer materials. A total of products of Cn and Wn satisfies a numerical formula (1):in-line-formulae description="In-line Formulae" end="lead"?Σ(Cn×Wn)≦20×10−8cm2/N  (1)in-line-formulae description="In-line Formulae" end="tail"?where Cn and Wn denote respectively a photoelastic coefficient and a volume fraction of each polymer material, and at least one of the polymer materials of the film has a photoelastic coefficient value of at least 60×10−8cm2/N, while at least one of the remaining polymer materials has a negative value of photoelastic coefficient.

REFERENCES:
patent: 5344916 (1994-09-01), Harris
patent: 5750641 (1998-05-01), Ezzell
patent: 6565974 (2003-05-01), Uchiyama et al.
patent: 6800697 (2004-10-01), Uchiyama et al.
patent: 1 160 591 (2001-12-01), None
patent: 03-24502 (1991-02-01), None
patent: 03-033719 (1991-02-01), None
patent: 08-511812 (1996-12-01), None
patent: 10-508048 (1998-08-01), None
patent: 2000-511296 (2000-08-01), None
patent: 2001-49110 (2001-02-01), None
patent: 2001-343529 (2001-12-01), None
patent: WO 96/11967 (1996-04-01), None

Affiliated with

Also associated with

Rating

Birefringent optical film, elliptically polarizing plate... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Birefringent optical film, elliptically polarizing plate..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Birefringent optical film, elliptically polarizing plate... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3554634