US 10,890,819 B2
Electrochromic nanoparticles and method for producing same
Sanggeun Cho, Seoul (KR); Sangmo Koo, Seoul (KR); Koun Park, Seoul (KR); and Gukhwan An, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 16/97,158
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Nov. 4, 2016, PCT No. PCT/KR2016/012653
§ 371(c)(1), (2) Date Oct. 26, 2018,
PCT Pub. No. WO2017/188532, PCT Pub. Date Nov. 2, 2017.
Claims priority of application No. 10-2016-0051773 (KR), filed on Apr. 27, 2016.
Prior Publication US 2020/0073191 A1, Mar. 5, 2020
Int. Cl. G02F 1/153 (2006.01); B82B 3/00 (2006.01); G02F 1/1524 (2019.01); B82Y 30/00 (2011.01); C09K 9/02 (2006.01)
CPC G02F 1/1533 (2013.01) [B82B 3/00 (2013.01); B82Y 30/00 (2013.01); C09K 9/02 (2013.01); G02F 1/1524 (2019.01); G02F 2201/08 (2013.01); G02F 2202/36 (2013.01); G02F 2203/055 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method for producing electrochromic nanoparticles having a core-shell structure, the method comprising:
preparing a core;
coating a glass or polymer substrate provided with a transparent electrode with the core; and
adsorbing different types of electrochromic materials on a surface of the core coated on the substrate,
wherein the electrochromic materials have different absorption spectra,
wherein the electrochromic materials comprise a first electrochromic material having a maximum absorption wavelength of 450 nm to 510 nm, a second electrochromic material having a maximum absorption wavelength of 520 nm to 580 nm, and a third electrochromic material having a maximum absorption wavelength of 590 nm to 650 nm, and
wherein the adsorbing of the electrochromic materials comprises immersing the substrate coated with the core in a mixed solution of the first to third electrochromic materials.