Deposition mask and method of manufacturing display device using the same

A method of using a deposition mask, the method comprising:

• providing a sub-mask of the deposition mask through which deposition material passes to a base layer to form a deposition layer defining a hole therein, the sub-mask comprising:
• an aperture through which the deposition material passes through the sub-mask to the base layer to form less than a total planar area of the deposition layer, and
• a masking surface at which the deposition material does not pass through the sub-mask, the masking surface comprising a hole-forming portion of which a shape thereof is nested within a shape of the aperture, and
• providing the deposition material to a same base layer, through a plural number of the sub-mask, to form on the same base layer the total planar area of the deposition layer.

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

• depositing an organic layer on a base substrate of the display device by using a deposition mask, wherein the organic layer comprises an organic luminescent material and defines a hole therein;
• forming an encapsulation layer on the organic layer with the hole defined therein;
• and
• forming a penetration hole into which a device external to the display device is inserted, by removing portions of the base substrate, the organic layer and the encapsulation layer,
• wherein the penetration hole is formed inside the hole defined in the organic layer.