US 11,988,811 B2
Polarizing plate and liquid crystal display comprising the same
Seong Hoon Lee, Suwon-si (KR); Young Oh, Suwon-si (KR); Jeong Ho Lee, Suwon-si (KR); and Young Hyun Ju, Suwon-si (KR)
Assigned to Samsung SDI Co., Ltd., Yongin-si (KR)
Filed by SAMSUNG SDI CO., LTD., Yongin-si (KR)
Filed on Aug. 26, 2020, as Appl. No. 17/003,069.
Application 17/003,069 is a continuation of application No. 15/052,752, filed on Feb. 24, 2016, granted, now 10,775,539.
Claims priority of application No. 10-2015-0028637 (KR), filed on Feb. 27, 2015; and application No. 10-2015-0156117 (KR), filed on Nov. 6, 2015.
Prior Publication US 2020/0393604 A1, Dec. 17, 2020
Int. Cl. G02B 1/14 (2015.01); G02B 5/30 (2006.01); G02F 1/1335 (2006.01)
CPC G02B 1/14 (2015.01) [G02B 5/305 (2013.01); G02B 5/3083 (2013.01); G02F 1/133528 (2013.01); C09K 2323/03 (2020.08); C09K 2323/035 (2020.08); G02F 1/133507 (2021.01)] 16 Claims
OG exemplary drawing
 
1. A polarizing plate comprising:
a polarizer;
a pattern layer arranged at a first side of the polarizer, the pattern layer comprising a first refractive index layer having engraved patterns and each of the engraved patterns having a lenticular or prism shape and a second refractive index layer having a filling pattern filling at least a portion of an engraved pattern of the engraved patterns, a ratio of the sum of maximum pitches of the engraved patterns to a total width of the first refractive index layer being from about 40% to about 60%, and the first refractive index layer having a higher refractive index than the second refractive index layer; and
a first protective layer,
the polarizing plate having a stack structure in which the polarizer, the second refractive index layer, the first refractive index layer and the first protective layer are sequentially stacked in that order, or a stack structure in which the polarizer, the first protective layer, the second refractive index layer and the first refractive index layer are sequentially stacked in that order,
wherein the first protective layer comprises a base film comprising at least one resin of triacetylcellulose, polyethylene terephthalate, cyclic olefin polymer, and acrylic resins, wherein a ratio of a thickness of the pattern layer to a thickness of the first protective layer is 0.1 to about 0.75.