Mask and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-12594626-B2
Application number	US-202318400547-A
Country	US
Kind code	B2
Filing date	Dec 29, 2023
Priority date	Feb 5, 2021
Publication date	Apr 7, 2026
Grant date	Apr 7, 2026

Abstract

Provided is a mask including a mask frame including a base part in which cell openings are defined, and a coating part surrounding edges of the cell openings, covering at least a portion of an upper surface of the base part, and including a materials that is different from that of the base part, and unit masks on the mask frame, respectively corresponding to the cell openings, including a material that is different from that of the coating part, and in which openings are defined.

First claim

What is claimed is:

1 . A mask comprising:
a mask frame comprising a base part in which cell openings are defined, and a coating part that covers at least a portion of an upper surface of the base part, and that comprises a material composition that is different from that of the base part; unit masks located to respectively correspond to the cell openings, and in which openings overlapping a respective one of the cell openings are defined; and a joining part having an integral shape, and joining and contacting the unit masks and the mask frame along edges of the cell openings, wherein the coating part is inside of the upper surface of the base part and protrudes from the edge of the unit masks on a plane.

2 . The mask of claim 1 , wherein the coating part overlaps the joining part on a plane, and wherein the joining part joins the unit masks and the coating part.

3 . The mask of claim 1 , wherein the coating part is spaced apart from the joining part on a plane, and wherein the joining part joins the unit masks and the base part.

4 . The mask of claim 1 , wherein the coating part comprises magnesium or aluminum.

5 . The mask of claim 1 , wherein the coating part is formed on the upper surface of the mask frame through a deposition process or a coating process.

Assignees

• Samsung Display Co Ltd

Inventors

• Moon Youngmin
• Moon Minho
• Son Ji-Hee
• Song Seungyong
• Im Sungsoon
• Jo Junho

Classifications

• H10K71/00

  Manufacture or treatment specially adapted for the organic devices covered by this subclass · CPC title

• C23C14/24

  Vacuum evaporation · CPC title

• B23K26/364

  for making a groove or trench, e.g. for scribing a break initiation groove · CPC title

• B23K26/0622

  by shaping pulses · CPC title

• C23C14/042 Primary

  using masks · CPC title