Mask assembly, apparatus for manufacturing display device, and method of manufacturing display device

A mask assembly comprising:

• a mask frame comprising an opening and a portion surrounding the opening;
• and
• a mask arranged and tensioned in a first direction on the mask frame and comprising a first region and a second region, wherein a deposition material is passable through the first region, and the second region is around the first region,
• wherein the first region comprises a plurality of first portions configured to shield the deposition material and extending in the first direction, and
• a first portion from among the plurality of first portions is connected to a second portion from among a plurality of second portions extending in a second direction crossing the first direction in the second region, and
• a width of the first portion from among the plurality of first portions is the same as a width of the second portion from among the plurality of second portions.

An apparatus for manufacturing a display device, the apparatus comprising:

• a chamber in which a substrate is positionable;
• a deposition source located inside the chamber and configured to supply a deposition material into the chamber;
• and
• a mask assembly facing the deposition source and configured to pass the deposition material therethrough towards the substrate,
• wherein the mask assembly comprises:
• a mask frame comprising an opening and a portion surrounding the opening;
• and
• a mask arranged and tensioned in a first direction on the mask frame and comprising a first region and a second region, wherein the deposition material is passable through the first region corresponding to the opening, and the second region is around the first region,
• wherein the first region comprises deposition openings, and
• the second region comprises dummy openings, wherein at least some of the dummy openings comprise centers arranged to deviate from a straight line extending in the first direction and connecting centers of the deposition openings, and
• a width of each of the deposition openings is the same as a width of each of the dummy openings.

A method of manufacturing a display device, the method comprising:

• positioning a substrate within a chamber;
• supplying a deposition material into the chamber by using a deposition source located inside the chamber;
• and
• forming an organic layer on the substrate by using the deposition material that passes through a mask assembly facing the deposition source,
• wherein the mask assembly comprises:
• a mask frame comprising an opening and a portion surrounding the opening;
• and
• a mask arranged and tensioned in a first direction on the mask frame and comprising a first region and a second region, wherein the deposition material passes through the first region corresponding to the openings, and the second region is around the first region, and
• the first region comprises deposition openings, and
• the second region comprises dummy openings, wherein at least some of the dummy openings comprise centers arranged to deviate from a straight line extending in the first direction and connecting centers of the deposition openings, and
• a width of each of the deposition openings is the same as a width of each of the dummy openings.