US 12,005,706 B2
Inkjet printing device, printing method of bipolar element, and manufacturing method of display device
An Na Ryu, Hwaseong-si (KR); Jin Oh Kwag, Yongin-si (KR); and Heung Cheol Jeong, Hwaseong-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Appl. No. 17/786,931
Filed by Samsung Display Co., LTD., Yongin-si (KR)
PCT Filed Jun. 5, 2020, PCT No. PCT/KR2020/007366
§ 371(c)(1), (2) Date Jun. 17, 2022,
PCT Pub. No. WO2021/125465, PCT Pub. Date Jun. 24, 2021.
Claims priority of application No. 10-2019-0168974 (KR), filed on Dec. 17, 2019.
Prior Publication US 2023/0047796 A1, Feb. 16, 2023
Int. Cl. B41J 2/18 (2006.01); B41J 2/045 (2006.01); B41J 2/125 (2006.01); B41M 5/00 (2006.01)
CPC B41J 2/04561 (2013.01) [B41J 2/125 (2013.01); B41J 2/18 (2013.01); B41M 5/0023 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An inkjet printing device comprising:
a stage;
an inkjet head disposed above the stage and comprising nozzles through which ink is ejected, the ink comprising bipolar elements extending in a direction;
an ink circulation part supplying the ink to the inkjet head, and supplied with the ink remaining after the ink is ejected from the inkjet head; and
at least one sensing part disposed between the inkjet head and the ink circulation part and measuring a number of the bipolar elements ejected through the nozzles.