US 12,329,021 B2
Polarizing plate and display device including the same
Beong Hun Beon, Yongin-si (KR); Min Seok Kim, Iksan-si (KR); Duk Jin Lee, Yongin-si (KR); Young Eun Choi, Iksan-si (KR); Eun Ok Lee, Iksan-si (KR); Soo An Cho, Iksan-si (KR); Sun Hwa Kim, Yongin-si (KR); Ga Hee Park, Yongin-si (KR); Yeon Su Woo, Yongin-si (KR); and Woo Suk Jung, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR); and DONGWOO FINE-CHEM CO., LTD., Iksan-si (KR)
Filed by Samsung Display Co., LTD., Yongin-si (KR); and DONGWOO FINE-CHEM CO., LTD., Iksan-si (KR)
Filed on Sep. 25, 2023, as Appl. No. 18/473,397.
Claims priority of application No. 10-2023-0018341 (KR), filed on Feb. 10, 2023.
Prior Publication US 2024/0284770 A1, Aug. 22, 2024
Int. Cl. G02B 5/30 (2006.01); G02B 1/08 (2006.01); H10K 59/35 (2023.01); H10K 59/80 (2023.01); H10K 77/10 (2023.01)
CPC H10K 59/8793 (2023.02) [G02B 1/08 (2013.01); G02B 5/3016 (2013.01); H10K 59/352 (2023.02); H10K 59/353 (2023.02); H10K 59/873 (2023.02); H10K 77/111 (2023.02)] 35 Claims
OG exemplary drawing
 
1. A polarizing plate comprising:
a polarizer comprising an absorption axis and a transmission axis that intersect each other;
a first retardation layer disposed on a surface of the polarizer; and
a second retardation layer disposed on another surface opposite to the surface of the polarizer, wherein
an in-plane retardation value of the second retardation layer is greater than about 20 nm and less than about 100 nm,
an in-plane retardation value of the first retardation layer is greater than the in-plane retardation value of the second retardation layer, and
an angle between the absorption axis of the polarizer and a retardation axis of the second retardation layer is in a range of about 10° to about 45°.