US 12,461,411 B2
Optical display device module and optical display device including same
Wan Taek Hong, Suwon-si (KR); Jun Mo Koo, Suwon-si (KR); Bong Choon Kim, Suwon-si (KR); Seung Mi Shin, Suwon-si (KR); Beom Deok Lee, Suwon-si (KR); Seong Hoon Lee, Suwon-si (KR); Seon Gyeong Jeong, Suwon-si (KR); and A Ra Jo, Suwon-si (KR)
Assigned to Samsung SDI Co., Ltd., Yongin-si (KR)
Appl. No. 18/249,198
Filed by SAMSUNG SDI CO., LTD., Yongin-si (KR)
PCT Filed Nov. 1, 2021, PCT No. PCT/KR2021/015563
§ 371(c)(1), (2) Date Apr. 14, 2023,
PCT Pub. No. WO2022/098016, PCT Pub. Date May 12, 2022.
Claims priority of application No. 10-2020-0145577 (KR), filed on Nov. 3, 2020.
Prior Publication US 2023/0408860 A1, Dec. 21, 2023
Int. Cl. G02F 1/1335 (2006.01)
CPC G02F 1/133528 (2013.01) 18 Claims
OG exemplary drawing
 
1. An optical display module comprising: an optical display panel; and a first polarizing plate disposed on at least one surface of the optical display panel,
wherein the first polarizing plate comprises a first polarizer and a first retardation layer disposed between the first polarizer and the optical display panel, the first retardation layer comprising at least a positive C layer;
the optical display panel comprises a second retardation layer therein; and
the second retardation layer and the first retardation layer satisfy formulas 1 and 2:
|Re1×Rth2|≥8450  [Formula 1]
−2.10≤(Re1)/(Rth2)≤−1.20  [Formula 2]
where Re1 is an in-plane retardation (unit: nm) of the second retardation layer at a wavelength of 550 nm, and
Rth2 is an out-of-plane retardation (unit: nm) of the first retardation layer at a wavelength of 550 nm.