Resin film, production method thereof, polarizing plate and...

Details Resin film, production method thereof, polarizing plate and... Resin film, production method thereof, polarizing plate and...

2011-07-12

2011-07-12

Hon, Sophie (Department: 1798)

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

With viewing layer of specified composition

C349S096000, C349S118000, C428S001310

Reexamination Certificate

active

07976914

ABSTRACT:
A resin film has a photoelastic coefficient of from 0 to 30×10−8cm2/N; and Re satisfying the following formulae (1) to (4):in-line-formulae description="In-line Formulae" end="lead"?20 nm<Re(548)<300 nm  Formula (1):in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?0.5<Re(446)/Re(548)<1  Formula (2):in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?1.0<Re(629)/Re(548)<2.0  Formula (3):in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?0.1%≦[{Re(548) at 25° C., 10%RH−Re(548) at 25° C., 80%RH}/Re(548) at 25° C., 60%RH]≦20%,  Formula (4):in-line-formulae description="In-line Formulae" end="tail"?wherein Re(λ) represents an in-plane retardation at a wavelength of λ.

REFERENCES:
patent: 6771340 (2004-08-01), Yoshimi et al.
patent: 2002/0041352 (2002-04-01), Kuzuhara et al.
patent: 2002-022941 (2002-01-01), None
patent: 2003-292639 (2003-10-01), None
patent: 2003-121641 (2004-04-01), None
patent: 2006-323329 (2006-11-01), None
patent: WO 03/032060 (2003-04-01), None
patent: WO 2006030954 (2006-03-01), None

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