Mask and deposition apparatus including the same

A deposition apparatus comprising:

• a chamber accommodating a base substrate;
• a deposition source spraying a deposition material to the base substrate;
• and
• a mask comprising:
• a first protruding portion including a first deposition hole,
• a second protruding portion including a second deposition hole spaced apart from the first deposition hole,
• a peripheral portion surrounding the first protruding portion and the second protruding portion, the peripheral portion comprising:
• a first surface facing the deposition source, and
• a second surface facing the first surface and contacting the base substrate, and
• a coating layer, wherein
• each of the first protruding portion and the second protruding portion comprises:
• a lower surface,
• an upper surface extending from the first surface of the peripheral portion, and
• a side surface disposed between the upper surface and the lower surface and inclined at an angle with respect to the lower surface,
• the second protruding portion comprises:
• a protrusion protruded from the side surface of the second protruding portion, and
• a groove formed by removing at least a portion of the second protruding portion;
• and
• the coating layer covers at least one of the protrusion and the groove.