US 12,013,635 B2
Semiconductor photoresist composition and method of forming patterns using the composition
Kyungsoo Moon, Suwon-si (KR); Eunmi Kang, Suwon-si (KR); Jaehyun Kim, Suwon-si (KR); Jimin Kim, Suwon-si (KR); Changsoo Woo, Suwon-si (KR); Hwansung Cheon, Suwon-si (KR); Seungyong Chae, Suwon-si (KR); and Seung Han, Suwon-si (KR)
Assigned to Samsung SDI Co., Ltd., Yongin-si (KR)
Filed by Samsung SDI Co., Ltd., Yongin-si (KR)
Filed on Nov. 10, 2021, as Appl. No. 17/454,453.
Claims priority of application No. 10-2020-0178620 (KR), filed on Dec. 18, 2020.
Prior Publication US 2022/0197138 A1, Jun. 23, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G03F 7/004 (2006.01); C07F 7/22 (2006.01)
CPC G03F 7/0042 (2013.01) [C07F 7/2224 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A semiconductor photoresist composition, comprising:
a condensed product produced by a condensation reaction between an organotin compound represented by Chemical Formula 1 and at least one organic acid compound selected from a substituted organic acid, an organic acid comprising at least two acid functional groups, and a substituted or unsubstituted sulfonic acid; and
a solvent:

OG Complex Work Unit Chemistry
wherein, in Chemical Formula 1,
R1 is a substituted or unsubstituted C1 to C20 alkyl group, a substituted or unsubstituted C3 to C20 cycloalkyl group, a substituted or unsubstituted C2 to C20 alkenyl group, a substituted or unsubstituted C2 to C20 alkynyl group, a substituted or unsubstituted C6 to C30 aryl group, or -L-O—Rd,
Ra, Rb, and Rc are each independently a substituted or unsubstituted C1 to C20 alkyl group, a substituted or unsubstituted C3 to C20 cycloalkyl group, a substituted or unsubstituted C2 to C20 alkenyl group, a substituted or unsubstituted C2 to C20 alkynyl group, or a substituted or unsubstituted C6 to C30 aryl group,
L is a single bond, or a substituted or unsubstituted C1 to C20 alkylene group, and
Rd is a substituted or unsubstituted C1 to C20 alkyl group, and
wherein a weight ratio of the organotin compound and the organic acid compound is about 85:15 to about 99:1.