Optical compensation polarizing film achieving a higher...

Details Optical compensation polarizing film achieving a higher... Optical compensation polarizing film achieving a higher...

2006-01-31

2008-10-28

Nelms, David C. (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C349S119000, C349S120000

Reexamination Certificate

active

07443473

ABSTRACT:
An LCD device includes first and second compensation polarizing films sandwiching therebetween a homogeneously-oriented liquid crystal layer. The first compensation polarizing film includes a polarizing film having an in-plane retardation of 35 to 245 nm, wherein n1≧nz>n2, wherein n1 and n2 are refractive indexes of optical axes extending perpendicular to each other within the first retardation film and nz is a thickness-direction refractive index of the first retardation film. The second compensation polarizing film has a protection layer, a polarizing film and a retardation film having an in-plane retardation of 0 to 10 nm and thickness-direction retardation of 0 to 35 nm.

REFERENCES:
patent: 6937310 (2005-08-01), Elman et al.
patent: 7072015 (2006-07-01), Maeda
patent: 2004/0160559 (2004-08-01), Kim et al.
patent: 2005/0140900 (2005-06-01), Jeon et al.
patent: 2001-242462 (2001-09-01), None

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