US 12,243,963 B2
Light emitting element ink and method of manufacturing display device
Hyo Jin Ko, Seoul (KR); Duk Ki Kim, Suwon-si (KR); Jun Bo Sim, Suwon-si (KR); Na Mi Hong, Cheonan-si (KR); Yong Hwi Kim, Asan-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 May 13, 2021, as Appl. No. 17/319,602.
Claims priority of application No. 10-2020-0096767 (KR), filed on Aug. 3, 2020.
Prior Publication US 2022/0037559 A1, Feb. 3, 2022
Int. Cl. H01L 33/26 (2010.01); C09D 11/38 (2014.01); C09D 11/50 (2014.01); C09K 11/02 (2006.01); G02F 1/167 (2019.01); H01L 33/42 (2010.01); H01L 33/50 (2010.01)
CPC H01L 33/26 (2013.01) [C09D 11/38 (2013.01); C09D 11/50 (2013.01); C09K 11/025 (2013.01); G02F 1/167 (2013.01); H01L 33/42 (2013.01); H01L 33/502 (2013.01); H01L 2933/0016 (2013.01); H01L 2933/0041 (2013.01)] 22 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, the light emitting element including:
a plurality of semiconductor layers; and
an insulating film surrounding outer surfaces of the plurality of semiconductor layers; and
a thickener dispersed in the light emitting element solvent, wherein
the thickener includes a compound represented by Chemical Structural Formula 1 below as a polyol-based compound capable of forming a hydrogen bond with the light emitting element solvent or another thickener, and
the thickener has a boiling point in a range of about 200° C. to about 450° C.,

OG Complex Work Unit Chemistry
wherein, in Chemical Structural Formula 1,
R1 is a linear or branched alkyl group or a linear or branched alkyl ether group having 1 to 3000 carbon atoms,
the linear or branched alkyl group and the linear or branched alkyl ether group are substituted with a hydroxyl group (—OH) or is unsubstituted, and
I is an integer of 1 to 10.