Thin film polarizer having superior optical properties, manufacturing method thereof, and polarizing plate and display device including the same
AssigneeLG Chem, Ltd.
InventorsSung-Hyun NAM, Jong-Hyun JUNG, Kyun-Il RAH, Hye-Min YU
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Abstract
There are provided a thin film polarizer having superior optical properties and a method of manufacturing the same. The thin film polarizer includes: forming a film laminate by attaching a non-stretched polyvinyl alcohol (PVA)-based film to at least one surface of a thermoplastic polyurethane film, using attractive force therebetween or using an adhesive; stretching the film laminate at a temperature of 45° C. to 55° C.; and separating the PVA-based film from the thermoplastic polyurethane film.
Claims16
A method of manufacturing a thin film polarizer, the method comprising:
- forming a film laminate by attaching a non-stretched polyvinyl alcohol (PVA)-based film to at least one surface of a thermoplastic polyurethane film, using attractive force therebetween or using an adhesive;
- stretching the film laminate at a temperature of 45° C. to 55° C.;
- and
- separating the PVA-based film from the thermoplastic polyurethane film.
A thin film polarizer having a thickness of 10 μm or less, a single transmittance of 40% to 45%, a degree of polarization of 99.0% or higher, and a standard deviation of 0.002% or less in degrees of polarization measured at ten equidistant points in a width direction of the polarizer.
Dependencies are inferred from the claim text.