US 12,204,127 B2
Optical laminate
Na Young Shin, Daejeon (KR); Kyun Il Rah, Daejeon (KR); Jin Seok Byun, Daejeon (KR); Yeong Rae Chang, Daejeon (KR); and Kyung Moon Ko, Daejeon (KR)
Assigned to LG CHEM, LTD., Seoul (KR)
Appl. No. 17/599,332
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed Jan. 31, 2020, PCT No. PCT/KR2020/001457
§ 371(c)(1), (2) Date Sep. 28, 2021,
PCT Pub. No. WO2020/204330, PCT Pub. Date Oct. 8, 2020.
Claims priority of application No. 10-2019-0037450 (KR), filed on Mar. 29, 2019.
Prior Publication US 2022/0196898 A1, Jun. 23, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G02B 5/30 (2006.01); B32B 27/20 (2006.01); B32B 27/30 (2006.01)
CPC G02B 5/305 (2013.01) [B32B 27/205 (2013.01); B32B 27/308 (2013.01); B32B 2250/03 (2013.01); B32B 2264/2032 (2020.08); B32B 2264/301 (2020.08); B32B 2307/42 (2013.01); B32B 2307/71 (2013.01); B32B 2307/732 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An optical laminate, comprising:
an optical functional layer; and
a reddening-resistant layer formed on at least one surface of the optical functional layer, wherein the reddening-resistant layer is a void-containing layer or a laminate comprising the void-containing layer, wherein the void-containing layer comprises a binder and hollow particles, and wherein the hollow particles have a D10 particle diameter of 25 nm to 50 nm, a D50 particle diameter of 50 nm to 95 nm and a D90 particle diameter of 100 nm to 200 nm in a weight cumulative curve of particle size distribution;
wherein the reddening-resistant layer satisfies Equation 4:
HL≤0.9×HP,  [Equation 4]
wherein, HL is a thermal diffusivity of a laminate of a polymer film and the reddening-resistant layer formed on one surface of the polymer film, and HP is a thermal diffusivity of the polymer film.