US 11,752,761 B2
System for droplet measurement
Jeong Won Han, Seongnam-si (KR); and Jeong Ho Yi, Suwon-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Display Co., LTD., Yongin-si (KR)
Filed on Dec. 22, 2021, as Appl. No. 17/560,147.
Claims priority of application No. 10-2021-0055802 (KR), filed on Apr. 29, 2021.
Prior Publication US 2022/0348006 A1, Nov. 3, 2022
Int. Cl. G01N 15/02 (2006.01); B41J 2/045 (2006.01); G01N 15/14 (2006.01)
CPC B41J 2/0456 (2013.01) [G01N 15/0227 (2013.01); G01N 2015/1493 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system for droplet measurement comprising:
an inkjet head including a nozzle which discharges droplets;
a substrate on which the droplets discharged from the nozzle of the inkjet head are dripped;
a first detector disposed below the substrate and including a first camera and a first focusing structure; and
a second detector disposed below the substrate and including a second camera and a second focusing structure.