Polarizing plate and liquid-crystal display containing the same

Details Polarizing plate and liquid-crystal display containing the same Polarizing plate and liquid-crystal display containing the same

2006-01-10

2006-01-10

Boutsikaris, Leonidas (Department: 2872)

Optical: systems and elements

Polarization without modulation

By relatively adjustable superimposed or in series polarizers

C359S491010

Reexamination Certificate

active

06985292

ABSTRACT:
A polarizing plate with a drop in polarization efficiency, hue shift, and light leakage do not substantially occur under a high humidity/high temperature environment, and a liquid crystal display device utilizing the same are provided. The polarizing plate of the present invention includes a polyvinyl-alcohol-based polarizing film wherein after being subjected to an atmosphere of 80° C. and 90% RH for 24 hours, the retention of the polarization efficiency is 0.97 or more, the retention of the luminance is 3.0 or less, and an absolute value for the amount of change in value “a” is 0.6 or less and an absolute value for the amount of change in value “b” is 1.0 or less, according to the Hunter-Lab method. A liquid crystal display device of the present invention includes such a polarizing plate affixed thereto.

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