US 12,408,492 B2
Display device manufacturing apparatus, method of manufacturing display device using the same, and display device manufactured by the same
An Na Ryu, Yongin-si (KR); Jin Oh Kwag, Yongin-si (KR); Jong Hyuk Kang, Yongin-si (KR); and Sung Hoon Kim, Yongin-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., LTD., Yongin-si (KR)
Filed on Nov. 22, 2021, as Appl. No. 17/532,312.
Claims priority of application No. 10-2021-0039072 (KR), filed on Mar. 25, 2021.
Prior Publication US 2022/0310876 A1, Sep. 29, 2022
Int. Cl. H10H 20/831 (2025.01); B05B 7/04 (2006.01); B05B 12/00 (2018.01); H10H 20/01 (2025.01)
CPC H10H 20/831 (2025.01) [B05B 7/0408 (2013.01); B05B 12/004 (2013.01); H10H 20/01 (2025.01); H10H 20/032 (2025.01)] 19 Claims
OG exemplary drawing
 
1. A display device manufacturing apparatus comprising:
a first reservoir that accommodates a solvent;
a second reservoir that accommodates light emitting elements; and
a print head including:
a mix chamber that accommodates an ink including at least some of the solvent received from the first reservoir and one or more light emitting elements received from the second reservoir;
a first channel fluidically connecting the first reservoir and the mix chamber;
a second channel fluidically connecting the second reservoir and the mix chamber;
a counter that, in response to a flow of the one or more light emitting elements in the second channel, obtains information on a number of the one or more light emitting elements flowing through a portion of the second channel; and
an open and close unit fluidically disposed between the portion of the second channel and the mix chamber, the open and close unit being toggleable between an open state and a closed state based on the number of the one or more light emitting elements.