US 12,422,742 B2
Method of manufacturing deposition mask frame assembly for display panel
Jung Ho Kim, Yongin-si (KR)
Assigned to KEEPS BIOPHARMA INC., Hwaseong-si (KR)
Filed by Keeps Biopharma Inc., Hwaseong-si (KR)
Filed on Jul. 13, 2022, as Appl. No. 17/864,148.
Claims priority of application No. 10-2021-0112624 (KR), filed on Aug. 25, 2021.
Prior Publication US 2023/0062020 A1, Mar. 2, 2023
Int. Cl. G03F 1/68 (2012.01); B05C 21/00 (2006.01); G03F 1/66 (2012.01); H10K 71/00 (2023.01); H10K 71/16 (2023.01)
CPC G03F 1/68 (2013.01) [B05C 21/005 (2013.01); G03F 1/66 (2013.01); H10K 71/00 (2023.02); H10K 71/166 (2023.02)] 6 Claims
OG exemplary drawing
 
1. A method of manufacturing a deposition mask frame assembly using a deposition stick mask that includes a structural stick mask with edges and ribs and cell unit masks with deposition pattern holes, the method comprising:
preparing a frame having a quadrangular shape with a central opening;
placing and welding a support stick mask on a frame while the support stick mask is tensioned in a longitudinal direction of a Y-axis direction;
placing and welding a gap stick mask on the frame while the gap stick mask is tensioned in a longitudinal direction of an X-axis direction; and
placing the deposition stick mask on the frame, and welding the edges on the frame while the deposition stick mask is tensioned in a longitudinal direction of the X-axis direction and at the same time, adhesively tensioned in the Y-axis direction,
wherein the gap stick mask is fixed on the support stick mask by welding overlapping regions of the gap stick mask and the support stick mask, and
the ribs are located on the support stick mask and the edges are located on the frame or the gap stick mask, and both of which function as welding zones.