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US 10,591,655 B2Granted
Optical film, liquid crystal display device including same, and manufacturing method therefor
AssigneeSamsung SDI Co., Ltd.
InventorsA Ra Jo, Bae Wook Lee, Lee Hwa Song, Ki Ho Park, Boem Deok Lee
Life of this patent
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Abstract
The present invention relates to an optical film including a polarizing film, and a manufacturing method therefor. The optical film of the present invention can include the polarizing film having an orthogonal transmittance of less than 0.5% in a wavelength of a range of 405-735 nm.
Claims4
An optical film comprising:
- a polarizing film having an absolute value of a slope of 0.01 or less at a first wavelength range of 405 nm to 460 nm and an absolute value of a slope of 0.1 or less at a second wavelength range of 730 nm to 735 nm on a graph having horizontal and vertical axes indicating measurement wavelength and orthogonal transmittance, respectively, the slope in each of the first and second wavelength ranges being represented by Equation 1:
- Slope (%/nm)=(Orthogonal transmittance change amount (%))/Wavelength change amount (nm)) (Equation 1).
Dependencies are inferred from the claim text.