US 12,274,154 B2
Ink droplet volume measuring apparatus and ink droplet volume measuring method using the same, and thin film layer forming apparatus using the measuring apparatus, and manufacturing method of display apparatus using the thin film layer forming apparatus
Jeongwon Han, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Mar. 14, 2024, as Appl. No. 18/605,154.
Application 18/605,154 is a division of application No. 16/794,102, filed on Feb. 18, 2020, abandoned.
Claims priority of application No. 10-2019-0071767 (KR), filed on Jun. 17, 2019.
Prior Publication US 2024/0251648 A1, Jul. 25, 2024
Int. Cl. B41J 2/45 (2006.01); B41J 2/045 (2006.01); G01B 11/24 (2006.01); H10K 71/00 (2023.01); H10K 71/13 (2023.01); H10K 50/115 (2023.01); H10K 59/38 (2023.01); H10K 71/50 (2023.01)
CPC H10K 71/00 (2023.02) [B41J 2/04535 (2013.01); B41J 2/0456 (2013.01); B41J 2/04593 (2013.01); G01B 11/24 (2013.01); B41J 2202/03 (2013.01); H10K 50/115 (2023.02); H10K 59/38 (2023.02); H10K 71/135 (2023.02); H10K 71/50 (2023.02)] 5 Claims
OG exemplary drawing
 
1. A method of manufacturing a display apparatus, the method comprising:
forming a plurality of emission devices on a first substrate;
forming a plurality of quantum dot thin-film layers on a second substrate; and
sealing the first substrate and the second substrate such that the plurality of emission devices and the plurality of quantum dot thin-film layers correspond to each other,
wherein the forming of the quantum dot thin-film layers comprises:
dropping ink droplet for forming the quantum dot thin-film layer on a test substrate by using a nozzle of an inkjet head,
scanning and irradiating light having a plurality of wavelengths by a chromatic confocal sensor on the ink droplet dropped on the test substrate;
obtaining a three-dimensional shape of the ink droplet from a signal scanned by the chromatic confocal sensor to feedback-control an ejection amount of the nozzle; and
dropping the feedback-controlled ink droplet on the second substrate to be the quantum dot thin-film layer.