Polycarbonate-based oriented film and retardation film

Details Polycarbonate-based oriented film and retardation film Polycarbonate-based oriented film and retardation film

2007-05-29

2007-05-29

Wu, Shean C (Department: 1756)

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

C428S001200, C428S001310, C428S412000, C349S117000, C349S123000, C528S196000, C528S198000

Reexamination Certificate

active

10487765

ABSTRACT:
A uniaxially or biaxially oriented film which is made from a specific polycarbonate having a fluorene ring and a glass transition temperature of 165° C. or higher and which has a heat shrinkage factor when it is heated at 90° C. for 500 hours of 0.1% or less, and a ratio of retardation R(450) within the film plane at a wavelength of 450 nm to retardation R(550) within the film plane at a wavelength of 550 nm of 1 to 1.06. This film can be used in a high-quality liquid crystal display device such as a vertical alignment liquid crystal display device and is useful as a retardation film which almost solves a frame problem.

REFERENCES:
patent: 6565974 (2003-05-01), Uchiyama et al.
patent: 6638582 (2003-10-01), Uchiyama et al.
patent: 2003/0043730 (2003-03-01), Uchiyama et al.
patent: 2004/0239852 (2004-12-01), Ono et al.
patent: 1 118 885 (2001-07-01), None
patent: 1 197 768 (2002-04-01), None
patent: 6-25398 (1994-02-01), None
patent: 6-82624 (1994-03-01), None
patent: 7-52270 (1995-02-01), None
patent: 7-246661 (1995-09-01), None
patent: 2000-162419 (2000-06-01), None
patent: 2001-318232 (2001-11-01), None
patent: 2001-318233 (2001-11-01), None
English translation by computer for JP 2001-318232, http://www4.ipdl.ncipi.go.jp/Tokujitu/PAJdetail.ipdl?N0000=60&N0120=01&N2001=2&N3001=2001-318232.
K. Ohmuro, S. Kataoka, T. Sasaki, and Y. Koike, 33.3: Development of Super-High-Image-Quality Vertical-Alignment-Mode LCD, 1997 Society for Information Display International Symposium Digest of Technical Papers, pp. 845-848.

Affiliated with

Also associated with

Rating

Polycarbonate-based oriented film and retardation film does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polycarbonate-based oriented film and retardation film, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polycarbonate-based oriented film and retardation film will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3791213