Polarizer protection film, polarizing plate including same, and liquid crystal display device including polarizing plate
AssigneeSamsung SDI Co., Ltd.
InventorsRan KIM, So Hee YU, Seung Kyu LEE
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Abstract
Provided are a polarizer protection film, a polarizing plate comprising the same, and a liquid crystal display device comprising the polarizing plate. The polarizer protection film has: a moisture permeability ranging from approximately 0 g/m2/24 hr to approximately 100 g/m2/24 hr; a value for a MD-direction shrinkage rate/a TD-direction shrinkage rate, ranging from 0.8 to 1.3; an in-plane phase difference (Re) ranging from approximately 0 nm to approximately 350 nm; a thickness-direction phase difference (Rth) ranging from approximately 2500 nm to approximately 8000 nm; and a thickness of approximately 10 μm to approximately 60 μm.
Claims13
A protective film for polarizer, having a water vapor transmission rate of about 0 g/m2/24 hr to about 100 g/m2/24 hr;
- a ratio of shrinkage in the MD to shrinkage in the TD of about 0.8 to about 1.3;
- an in-plane retardation Re of about 0 nm to about 350 nm;
- an out-of-plane retardation Rth of about 2,500 nm to about 8,000 nm;
- and a thickness of about 10 μm to about 60 μm.
A polarizing plate comprising:
- a polarizer comprising a polyvinyl alcohol resin;
- and
- a protective film for polarizer stacked on at least one surface of the polarizer,
- wherein the protective film for polarizer has a water vapor transmission rate of about 0 g/m2/24 hr to about 100 g/m2/24 hr;
- a ratio of shrinkage in the MD to shrinkage in the TD of about 0.8 to about 1.3;
- an in-plane retardation Re of about 0 nm to about 350 nm;
- an out-of-plane retardation Rth of about 2,500 nm to about 8,000 nm;
- and a thickness of about 10 μm to about 60 μm.
Dependencies are inferred from the claim text.