POLARIZING PLATE PROTECTIVE FILM, POLARIZING PLATE, LIQUID CRYSTAL DISPLAY DEVICE, AND METHOD FOR PREPARING POLARIZING PLATE PROTECTIVE FILM
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United States of America Patent
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Issued Date -
Sep 22, 2016
app pub date -
Mar 17, 2016
filing date -
Mar 19, 2015
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Abstract
There is provided a polarizing plate protective film including: a hard coat layer with a thickness of 3 to 10 μm on at least one surface of a cellulose acylate film with a thickness of 15 to 40 μm, wherein the hard coat layer is a layer formed by curing a composition for forming a hard coat layer containing specific components, and the polarizing plate protective film has a WVTRA of 300 g/m2/day or less and a ratio WVTRA/WVTRB of 0.6 to 1.0, wherein WVTRA represents a water vapor transmission rate under environments of a temperature of 40° C. and a relative humidity of 90% and WVTRB represents a water vapor transmission rate under environments of a temperature of 40° C. and a relative humidity of 90% after being exposed to the environments of a temperature of 85° C. and a relative humidity of 85% for 24 hours.
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