US 12,422,749 B2
Photosensitive ink composition, cured product, display panel, and method for producing cured product
Hiroki Chisaka, Kawasaki (JP); Wataru Suzuki, Kawasaki (JP); and Koichi Misumi, Kawasaki (JP)
Assigned to TOKYO OHKA KOGYO CO., LTD., Kawasaki (JP)
Appl. No. 17/756,439
Filed by TOKYO OHKA KOGYO CO., LTD., Kawasaki (JP)
PCT Filed Nov. 17, 2020, PCT No. PCT/JP2020/042814
§ 371(c)(1), (2) Date May 25, 2022,
PCT Pub. No. WO2021/106683, PCT Pub. Date Jun. 3, 2021.
Claims priority of application No. 2019-215870 (JP), filed on Nov. 28, 2019.
Prior Publication US 2023/0028822 A1, Jan. 26, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G03F 7/028 (2006.01); C09D 11/322 (2014.01); C09D 11/38 (2014.01); G03F 7/20 (2006.01)
CPC G03F 7/028 (2013.01) [C09D 11/322 (2013.01); C09D 11/38 (2013.01); G03F 7/2004 (2013.01)] 11 Claims
 
1. A photosensitive ink composition comprising a photopolymerizable compound (A), metal compound particles (B), and a photopolymerization initiator (C),
wherein the photosensitive ink composition optionally comprises a solvent(S),
the photopolymerizable compound (A) consists of a sulfide compound (A1) represented by the following formula (a-1) and a (meth)acrylate compound represented by the following formula (a-2),
the metal compound particles (B) comprise at least one selected from the group consisting of titanium oxide particles, barium titanate particles, cerium oxide particles, and zinc sulfide particles,
a content of the solvent in the photosensitive ink composition is 5% by mass or less relative to a mass of the photosensitive ink composition, and
a viscosity measured at 25° C. using an E-type viscometer is 30 cP or less:

OG Complex Work Unit Chemistry
wherein, in the formula (a-1), R1 and R2 are each independently a hydrogen atom or a methyl group, R3 and R4 are each independently an alkyl group having 1 or more and 5 or less carbon atoms, and p and q are each independently 0 or 1:

OG Complex Work Unit Chemistry
wherein, in the formula (a-2), R10 is a hydrogen atom or a methyl group, R11 is an alkylene group having 1 or more and 3 or less carbon atoms, R12 is a single bond, an oxygen atom, or a sulfur atom, R13 is an alkyl group having 1 or more and 4 or less carbon atoms or an alkoxy group having 1 or more and 4 or less carbon atoms, s is an integer of 0 or more and 5 or less, and t is 0, 1 or 2.