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US 12,754,357 B2Granted
Polarizing plate and optical display apparatus
AssigneeHoardsun Hengxin(Wuxi) Materials Co., Ltd.
InventorsSeo Young Kang, Il Woong Baek, Hyeon Im Joung
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Abstract
A polarizing plate and an optical display apparatus including the same are disclosed. A polarizing plate includes: a polarizer; and a first protective film stacked on a surface of the polarizer, the first protective film has an overall haze of 40% to 60% and an internal haze of 3% to 7%, and the polarizing plate has a light transmittance ratio of 4 or less, as calculated according to Equation 1, and a light transmittance ratio of 20 or more, as calculated according to Equation 2.
Claims11
A polarizing plate comprising:
- a polarizer;
- and
- a first protective film stacked on a surface of the polarizer,
- wherein the first protective film has an overall haze of 40% to 60% and an internal haze of 3% to 7%, and
- wherein the polarizing plate has a light transmittance ratio of 4 or less, as calculated according to the following Equation 1, and a light transmittance ratio of 20 or more, as calculated according to the following Equation 2:
- Light
-
- transmittance
-
- ratio
- =
- Tc
-
- (
- 430
-
- nm
- )
- /
- Tc
-
- (
- 550
-
- nm
- )
- ,
- (
- 1
- )
- Light
-
- transmittance
-
- ratio
- =
- Tc
-
- (
- 700
-
- nm
- )
- /
- Tc
-
- (
- 550
-
- nm
- )
- ,
- (
- 2
- )
- where
- Tc (430 nm) denotes a crossed transmittance of the polarizing plate at a wavelength of 430 nm (unit:
- %),
- Tc (550 nm) denotes a crossed transmittance of the polarizing plate at a wavelength of 550 nm (unit:
- %), and
- Tc (700 nm) denotes a crossed transmittance of the polarizing plate at a wavelength of 700 nm (unit:
- %).
59 more elements
Dependencies are inferred from the claim text.