US 11,667,119 B2
Inkjet printhead
Tae Ho Kim, Seongnam-si (KR); Eun Joo Jang, Suwon-si (KR); Tae Hyung Kim, Seoul (KR); Hyo Sook Jang, Suwon-si (KR); and You Jung Chung, Suwon-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Gyeonggi-Do (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Aug. 5, 2021, as Appl. No. 17/394,698.
Claims priority of application No. 10-2021-0031034 (KR), filed on Mar. 9, 2021.
Prior Publication US 2022/0288930 A1, Sep. 15, 2022
Int. Cl. B41J 1/16 (2006.01); B41J 2/16 (2006.01); B41J 2/045 (2006.01); H01L 21/56 (2006.01)
CPC B41J 2/164 (2013.01) [B41J 2/0458 (2013.01); B41J 2/04581 (2013.01); B41J 2/1601 (2013.01); H01L 21/56 (2013.01); B41J 2/1603 (2013.01); B41J 2/1604 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An inkjet printhead comprising:
a head body in which a first fine channel which is connected to an ink inlet and thus guides an inflow of ink, a second fine channel which is disposed below an interlayer interposed between the first fine channel and the second fine channel parallel to each other, communicated with the first fine channel through a connection via hole defined in the interlayer, and guides an outflow of the ink by being connected to an ink outlet, and a nozzle which is opened downward from the second fine channel are defined; and
a micro heater which is disposed closer to the connection via hole in an upper portion of the first fine channel than to an end of the first fine channel where the first fine channel is connected to the ink inlet or an end of the second fine channel where the second fine channel is connected to the ink outlet.