Deposition mask, method of manufacturing the same, and electronic device manufactured by using the same

A method of manufacturing a deposition mask, comprising:

• forming a membrane on a mask substrate;
• forming a cell opening extending through the mask substrate;
• and
• forming pixel openings extending through the membrane to communicate with the cell opening,
• wherein the pixel openings have a width that gradually decreases in a direction away from the cell opening.

An electronic device comprising a display panel,

• wherein the display panel comprises a backplane substrate and a plurality of light-emitting layers formed on the backplane substrate by utilizing a deposition mask,
• the deposition mask comprises:
• a mask substrate having a cell opening;
• and
• a membrane on the mask substrate and having pixel openings communicating with the cell opening,
• wherein the cell opening extends through the mask substrate,
• the pixel openings extend through the membrane and have a width that gradually decreases in a direction away from the cell opening, and
• the plurality of light-emitting layers is formed by a deposition process that provides a vapor deposition material through the cell opening and the pixel openings.