Retardation film, polarizing plate and vertical alignment...

Details Retardation film, polarizing plate and vertical alignment... Retardation film, polarizing plate and vertical alignment...

2006-10-04

2010-02-23

Hon, Sophie (Department: 1794)

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

With viewing layer of specified composition

C428S001310, C428S001330, C349S096000, C349S118000

Reexamination Certificate

active

07666482

ABSTRACT:
A retardation film manufactured as a long roll film having a slow axis in a lateral direction of the long roll film, wherein an elastic modulus in an in-plane slow axis direction εsand an elastic modulus in an in-plane fast axis direction εfmeet Condition (1), the in-plane fast axis direction being perpendicular to the in-plane slow axis direction:in-line-formulae description="In-line Formulae" end="lead"?1.26≦εs/εf≦2.60  Condition (1).in-line-formulae description="In-line Formulae" end="tail"?

REFERENCES:
patent: 5550661 (1996-08-01), Clark et al.
patent: 6814914 (2004-11-01), Tasaka et al.
patent: 2002/0149725 (2002-10-01), Hashimoto
patent: 2003/0020208 (2003-01-01), Tasaka et al.
patent: 2003/0219549 (2003-11-01), Shimizu
patent: 2005/0163943 (2005-07-01), Uchiyama et al.
patent: 2007/0097302 (2007-05-01), Umeda et al.

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