US 11,778,864 B2
Ink including an organic material, display device using the same, and method of manufacturing display device
Dongha Lee, Yongin-si (KR); Donghoon Kwak, Yongin-si (KR); Dukki Kim, Yongin-si (KR); Sehun Kim, Yongin-si (KR); and Seoksoon Back, Yongin-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Jan. 25, 2021, as Appl. No. 17/157,962.
Claims priority of application No. 10-2020-0071012 (KR), filed on Jun. 11, 2020.
Prior Publication US 2021/0391394 A1, Dec. 16, 2021
Int. Cl. H10K 71/00 (2023.01); C09D 11/30 (2014.01); C09K 11/06 (2006.01); H10K 59/122 (2023.01); H10K 85/10 (2023.01); H10K 59/12 (2023.01)
CPC H10K 59/122 (2023.02) [C09D 11/30 (2013.01); C09K 11/06 (2013.01); H10K 71/00 (2023.02); H10K 85/141 (2023.02); H10K 59/1201 (2023.02)] 14 Claims
OG exemplary drawing
 
1. A method of manufacturing a display device, the method comprising the steps of:
forming a pixel electrode on a substrate;
forming a bank layer on the pixel electrode, the bank layer having an opening exposing at least part of the pixel electrode; and
forming an intermediate layer on the pixel electrode by discharging ink comprising an organic material onto the pixel electrode,
wherein the organic material has a molecular weight greater than about 500 and less than about 1,000,000 g/mol, and
the organic material in the ink has a concentration and the molecular weight of the organic material satisfy:
y>−3.518*ln(x)+45.59,
wherein y is the concentration of the organic material, and x is the molecular weight of the organic material.