US 12,066,646 B2
Polarizing plate and optical display device comprising same
Jung Hun You, Suwon-si (KR); Sang Hum Lee, Suwon-si (KR); Jun Mo Koo, Suwon-si (KR); Bong Choon Kim, Suwon-si (KR); and Kwang Ho Shin, Suwon-si (KR)
Assigned to Samsung SDI Co., Ltd., Yongin-si (KR)
Appl. No. 18/005,591
Filed by SAMSUNG SDI CO., LTD., Yongin-si (KR)
PCT Filed Aug. 3, 2021, PCT No. PCT/KR2021/010104
§ 371(c)(1), (2) Date Jan. 13, 2023,
PCT Pub. No. WO2022/030929, PCT Pub. Date Feb. 10, 2022.
Claims priority of application No. 10-2020-0097685 (KR), filed on Aug. 4, 2020.
Prior Publication US 2023/0273358 A1, Aug. 31, 2023
Int. Cl. G02B 5/30 (2006.01); G02F 1/1335 (2006.01)
CPC G02B 5/3033 (2013.01) [G02F 1/133528 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A polarizing plate including a polarizer and a protective layer formed on at least one surface of the polarizer, the polarizing plate comprising a first region and a second region in an image display region,
wherein the first region and the second region have different total transmittances at the same wavelength;
a difference in total transmittance between the first region and the second region is in the range of 5% to 45%; and
the first region has a total transmittance of 45% to 85%, the first region has a maximum absorbance of 1.0 to 5.0 in the wavelength range of about 270 nm to about 325 nm, a maximum absorbance of 0.5 to 4.0 in the wavelength range of greater than about 325 nm to about 420 nm, and a maximum absorbance of 0.5 or less in the wavelength range of about 500 nm to about 800 nm.