Optical film, and lighting device and image viewing display...

Details Optical film, and lighting device and image viewing display... Optical film, and lighting device and image viewing display...

2005-05-03

2005-05-03

Chowdhury, Tarifur R. (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C349S117000

Reexamination Certificate

active

06888599

ABSTRACT:
An optical film in which at least one layer of a cholesteric liquid crystal layer (1) and a retardation layer (2) are laminated, wherein an in-plane retardation of the retardation layer (2): (nx1−ny1)×Dre is 5 nm or less, and a virtual thickness direction retardation: RZch, and a thickness direction retardation: RZre have a relationship of RZre/(−RZch)=0.05 through 0.35, can be used as a brightness enhancement film, and further that provides an excellent visibility satisfactory also when observed not only from a front direction but from an oblique direction in image viewing displays, such as liquid crystal displays.

REFERENCES:
patent: 5731886 (1998-03-01), Taber et al.
patent: 6630973 (2003-10-01), Matsuoka et al.

Affiliated with

Also associated with

Rating

Optical film, and lighting device and image viewing display... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical film, and lighting device and image viewing display..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical film, and lighting device and image viewing display... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3399439