US 12,344,752 B2
Ink composition, light conversion layer, and color filter
Eiji Otsuki, Sakura (JP); Mariko Toshimitsu, Sakura (JP); Masahiro Kobayashi, Sakura (JP); Minoru Tabuchi, Sakura (JP); Takayuki Miki, Sakura (JP); and Ikuro Kiyoto, Sakura (JP)
Assigned to TOPPAN Holdings Inc., Tokyo (JP)
Appl. No. 17/299,519
Filed by DIC Corporation, Tokyo (JP)
PCT Filed Dec. 23, 2019, PCT No. PCT/JP2019/050397
§ 371(c)(1), (2) Date Jun. 3, 2021,
PCT Pub. No. WO2020/137988, PCT Pub. Date Jul. 2, 2020.
Claims priority of application No. 2018-243039 (JP), filed on Dec. 26, 2018.
Prior Publication US 2022/0056292 A1, Feb. 24, 2022
Int. Cl. C09K 11/02 (2006.01); C09D 5/22 (2006.01); C09D 11/101 (2014.01); C09D 11/38 (2014.01); C09K 11/08 (2006.01); C09K 11/70 (2006.01); G02B 1/04 (2006.01); G02B 5/22 (2006.01); B82Y 40/00 (2011.01)
CPC C09D 11/38 (2013.01) [C09K 11/025 (2013.01); G02B 1/04 (2013.01); G02B 5/223 (2013.01); B82Y 40/00 (2013.01); C09D 5/22 (2013.01); G02B 2207/101 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An ink composition comprising:
light-emitting nanocrystalline particles;
a photopolymerizable component containing at least one photopolymerizable compound and having a Hansen solubility parameter δp of 3.0 MPa0.5 or more; and
a phosphite compound with a partial structure represented by the following formula (1):

OG Complex Work Unit Chemistry
wherein X1 to X3 independently denote an oxygen atom or a sulfur atom, R1 denotes an alkyl group, and * denotes a bonding arm,
wherein the phosphite compound is a compound represented by the following formula (6);

OG Complex Work Unit Chemistry
wherein X13 to X18 independently denote an oxygen atom or a sulfur atom, Z denotes a tetravalent hydrocarbon group, R11 and R12 independently denote a monovalent hydrocarbon group, and at least one of R11 and R12 denotes an alkyl group.