	US 12,216,300 B2
	Optical laminate comprising an optical functional layer and a porous layer
Na Young Shin, Daejeon (KR); Kyun Il Rah, Daejeon (KR); Jin Seok Byun, Daejeon (KR); and Yeong Rae Chang, Daejeon (KR)
Assigned to LG Chem, Ltd., Seoul (KR)
Appl. No. 17/440,569
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed Jan. 31, 2020, PCT No. PCT/KR2020/001466 § 371(c)(1), (2) Date Sep. 17, 2021, PCT Pub. No. WO2020/204336, PCT Pub. Date Oct. 8, 2020.
Claims priority of application No. 10-2019-0037445 (KR), filed on Mar. 29, 2019.
Prior Publication US 2022/0146732 A1, May 12, 2022
Int. Cl. G02B 5/30 (2006.01); B32B 7/12 (2006.01); B32B 23/08 (2006.01); B32B 23/20 (2006.01); B32B 27/08 (2006.01); B32B 27/30 (2006.01); B32B 27/32 (2006.01); C08F 22/10 (2006.01); C08J 5/18 (2006.01); C08K 3/36 (2006.01); G02B 1/04 (2006.01); G02B 5/20 (2006.01)

CPC G02B 5/3033 (2013.01) [B32B 7/12 (2013.01); B32B 23/08 (2013.01); B32B 23/20 (2013.01); B32B 27/08 (2013.01); B32B 27/306 (2013.01); B32B 27/32 (2013.01); C08F 22/10 (2013.01); C08J 5/18 (2013.01); C08K 3/36 (2013.01); G02B 1/04 (2013.01); G02B 5/208 (2013.01); B32B 2255/10 (2013.01); B32B 2255/26 (2013.01); B32B 2307/4026 (2013.01); B32B 2307/42 (2013.01); B32B 2307/514 (2013.01); B32B 2307/732 (2013.01); C08J 2323/02 (2013.01); C08J 2329/04 (2013.01); C08J 2333/08 (2013.01); G02B 2207/107 (2013.01)]

11 Claims

1. An optical laminate, comprising:

an optical functional layer; and

a porous layer formed on at least one side of the optical functional layer,

wherein the porous layer comprises a surface having a surface area ratio of 0.02 or more as measured by an atomic force microscope,

wherein the porous layer comprises a binder and hollow particles,

wherein the binder comprises a polymer derived from a polyfunctional acrylate having 2 to 10 polymerizable functional groups,

wherein the hollow particles have a D10 particle diameter in a range from 25 to 50 nm, a D50 particle diameter in a range from 50 to 100 nm and a D90 particle diameter in a range from 100 nm to 200 nm in a weight cumulative curve of particle size distribution.