Polarizing plate and liquid crystal display device

Details Polarizing plate and liquid crystal display device Polarizing plate and liquid crystal display device

2006-07-14

2009-02-24

Connelly Cushwa, Michelle R (Department: 2874)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C359S483010, C359S485050, C359S586000

Reexamination Certificate

active

07495720

ABSTRACT:
A polarizing plate comprises a polarizing element; and a hydrophilic polymer film adhered on the polarizing element and having an in-plane orientation. The transmittance of the polarizing plate as a single unit for light having a wavelength of 590 nm is 40% or more under an environment of 23° C. and 55% RH, the crossed-Nichols transmittance T2 of the polarizing plate is 0.03% or less under an environment of 23° C. and 55% RH, and a change ΔT2 in the transmittance T2 of the polarizing plate when the relative humidity changes from 20% RH to 80% RH at 23° C. satisfies the following formula:in-line-formulae description="In-line Formulae" end="lead"?0.05×T2<ΔT2<0.9×T2.in-line-formulae description="In-line Formulae" end="tail"?

REFERENCES:
patent: 2007/0019133 (2007-01-01), Umeda et al.
patent: 2007/0146887 (2007-06-01), Ikeda et al.
patent: 2002-267847 (2002-09-01), None
patent: 2004-004550 (2004-01-01), None
patent: 2005-114995 (2005-04-01), None

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