US 11,787,964 B2
Light emitting element ink and method of manufacturing display device
Jun Bo Sim, Suwon-si (KR); Hyo Jin Ko, Seoul (KR); Duk Ki Kim, Suwon-si (KR); Chang Hee Lee, Seoul (KR); and Jae Kook Ha, Seoul (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Apr. 16, 2021, as Appl. No. 17/233,288.
Claims priority of application No. 10-2020-0048795 (KR), filed on Apr. 22, 2020.
Prior Publication US 2021/0332256 A1, Oct. 28, 2021
Int. Cl. C09D 11/38 (2014.01); C09D 11/50 (2014.01); H10K 50/844 (2023.01); H10K 71/00 (2023.01); C09K 11/06 (2006.01)
CPC C09D 11/38 (2013.01) [C09D 11/50 (2013.01); H10K 50/844 (2023.02); H10K 71/00 (2023.02); C09K 11/06 (2013.01); C09K 2211/10 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A light emitting element ink, comprising:
a light emitting element solvent;
a light emitting element dispersed in the light emitting element solvent, each light emitting element comprising a plurality of semiconductor layers and an insulating film surrounding outer surfaces of the semiconductor layers;
a thickener dispersed in the light emitting element solvent,
wherein a compound of the thickener comprises a functional group capable of forming a hydrogen bond together with a compound of the light emitting element solvent or another compound of the thickener, and the compound of the thickeners represented by Chemical Formula 1 below:

OG Complex Work Unit Chemistry
wherein, in Chemical Formula 1, each R1 is independently a substituted or unsubstituted alkyl group having 6 to 8 carbon atoms, an alkene group, an alkenyl group, or an alkynyl group, and each R2 is independently an alkyl group having 3 to 8 carbon atoms.