US 11,807,764 B2
Ink compositions, production method thereof, and method of forming quantum dot polymer composite pattern using the same
Hyeyeon Yang, Suwon-si (KR); and Shin Ae Jun, Seongnam-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Jul. 10, 2019, as Appl. No. 16/507,790.
Claims priority of application No. 10-2018-0080220 (KR), filed on Jul. 10, 2018.
Prior Publication US 2020/0017704 A1, Jan. 16, 2020
Int. Cl. C09D 11/38 (2014.01); C08K 5/101 (2006.01); C08K 5/37 (2006.01); C09D 11/36 (2014.01); C08K 3/11 (2018.01); C08K 5/03 (2006.01); C08L 33/10 (2006.01); C08K 3/105 (2018.01); B82Y 20/00 (2011.01)
CPC C09D 11/38 (2013.01) [C08K 3/105 (2018.01); C08K 3/11 (2018.01); C08K 5/03 (2013.01); C08K 5/101 (2013.01); C08K 5/37 (2013.01); C08L 33/10 (2013.01); C09D 11/36 (2013.01); B82Y 20/00 (2013.01); C08K 2201/011 (2013.01)] 21 Claims
 
1. An ink composition, comprising
a quantum dot;
a carboxyl group-containing binder polymer;
an electrical insulating polymer precursor;
a radical initiator; and
a liquid vehicle,
wherein the liquid vehicle comprises a mixture of a first organic compound and a second organic compound,
the first organic compound comprises a compound represented by Chemical Formula 1-1, a compound represented by Chemical Formula 2, cyclohexyl acetate, or a combination thereof:

OG Complex Work Unit Chemistry
wherein, in Chemical Formula 1-1, L is a single bond or a C1 to C3 substituted or unsubstituted alkylene group, and R is a C1 to C3 alkyl group

OG Complex Work Unit Chemistry
wherein, in Chemical Formula 2, n is 6 to 10, and each instance of R is the same or different and is independently a hydrogen or a C1 to C3 alkyl group; and
the second organic compound comprises a compound represented by Chemical Formula 3, a compound represented by Chemical Formula 4, or a combination thereof:
R1—COO—[CnR2n+1O]m—R2  Chemical Formula 3
wherein, in Chemical Formula 3, R1 and R2 are the same or different and are independently a C1 to C20 alkyl group, n is an integer of 1 to 3, m is an integer of 1 to 10, and each instance of R is the same or different and is independently hydrogen or a C1 to C10 alkyl group,

OG Complex Work Unit Chemistry
wherein, in Chemical Formula 4, each instance of R is the same or different and is independently a hydrogen, a C1 to C10 alkyl group, or a C1 to C10 acyl group, and n is an integer ranging from 3 to 6,
provided that when the first organic compound is cyclohexyl acetate, then the second organic compound comprises dipropylene glycol methyl ether acetate, 2-(2-butoxyethoxy)ethyl acetate, 2-butoxyethyl acetate, 2-acetylbutyrolactone, or a combination thereof.