US 11,787,190 B2
Inkjet printing device, ink ejecting method, and method for manufacturing display device
Han Su Kim, Seoul (KR); Eun A Yang, Yongin-si (KR); Jong Hyuk Kang, Suwon-si (KR); and Hyun Min Cho, Seoul (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Appl. No. 17/418,048
Filed by Samsung Display Co., LTD., Yongin-si (KR)
PCT Filed Nov. 6, 2019, PCT No. PCT/KR2019/014942
§ 371(c)(1), (2) Date Jun. 24, 2021,
PCT Pub. No. WO2020/138702, PCT Pub. Date Jul. 2, 2020.
Claims priority of application No. 10-2018-0168382 (KR), filed on Dec. 24, 2018.
Prior Publication US 2022/0072864 A1, Mar. 10, 2022
Int. Cl. B41J 2/175 (2006.01); B41J 2/125 (2006.01); B41J 2/195 (2006.01); G02F 1/13 (2006.01); H10K 71/13 (2023.01)
CPC B41J 2/17503 (2013.01) [B41J 2/125 (2013.01); B41J 2/17566 (2013.01); B41J 2/195 (2013.01); G02F 1/1303 (2013.01); H10K 71/135 (2023.02)] 16 Claims
OG exemplary drawing
 
1. An inkjet printing device comprising:
an ink reservoir that stores an ink that contains particles, including a first outlet formed on a first surface of the ink reservoir in the gravity direction and a second outlet formed on a second surface which is opposite surface to the first surface in the gravity direction;
an inkjet head part that receives the ink from the ink reservoir and ejects the ink onto a target substrate;
a driver that rotates the ink reservoir; and
a first pipe connected between the first outlet and the inkjet head unit, and a second pipe connected between the second outlet and the inkjet head unit, wherein
one of the first outlet and the second outlet blocks the movement of the ink toward the inkjet head unit when the ink flows through the other outlet of the first outlet and the second outlet.