US 12,094,857 B2
Method of manufacturing display device including light emitting element ink having light emitting dispersant
Jae Hoon Jung, Seoul (KR); Jong Hyuk Kang, Suwon-si (KR); and Sung Chan Jo, Seoul (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Appl. No. 17/290,095
Filed by Samsung Display Co., LTD., Yongin-si (KR)
PCT Filed May 31, 2019, PCT No. PCT/KR2019/006596
§ 371(c)(1), (2) Date Apr. 29, 2021,
PCT Pub. No. WO2020/091174, PCT Pub. Date May 7, 2020.
Claims priority of application No. 10-2018-0131036 (KR), filed on Oct. 30, 2018.
Prior Publication US 2021/0398956 A1, Dec. 23, 2021
Int. Cl. H01L 25/075 (2006.01); C09D 11/037 (2014.01); C09D 11/322 (2014.01); C09D 11/38 (2014.01); C09D 11/50 (2014.01); H01L 25/16 (2023.01); H01L 33/44 (2010.01)
CPC H01L 25/0753 (2013.01) [C09D 11/037 (2013.01); C09D 11/322 (2013.01); C09D 11/38 (2013.01); C09D 11/50 (2013.01); H01L 25/167 (2013.01); H01L 33/44 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method of manufacturing a display device, the method comprising:
spraying an ink including a solvent, light emitting elements, and a light emitting element dispersant onto a target substrate provided with a first electrode and a second electrode;
applying a voltage to the first electrode and the second electrode to generate an electric field on the target substrate;
irradiating the ink sprayed on the target substrate with light to form a dispersant fragment in which the light emitting element dispersant is decomposed; and
removing the solvent and the dispersant fragment of the ink.