Abstract: A vacuum evaporation source capable of improving the straightness of a heating wire. To this end, aspects of the present invention provide a vacuum evaporation source including a crucible, including a first heating wire for heating the crucible, and a first upper fixing portion for fixing an upper portion of the first heating wire.

Abstract: An effusion cell for evaporating a thin film forming material, including: a case with an inner space; a crucible provided in the inner space and containing the thin film forming material; and a nozzle provided on a top of the crucible so that the thin film forming material is discharged to the outside of the crucible therethrough, in which the nozzle includes an upwardly upwardly reduced inclination formed to be inclined toward an inside of the crucible from one end of a lower of the nozzle; a first upwardly enlarged inclination formed to be inclined toward an edge of the crucible from an upper end portion of the upwardly reduced inclination; and a second upwardly enlarged inclination formed to be inclined toward the edge of the crucible at an upper end portion of the first upwardly enlarged inclination.

Abstract: A vacuum evaporation source capable of improving the straightness of a heating wire. To this end, aspects of the present invention provide a vacuum evaporation source including a crucible, including a first heating wire for heating the crucible, and a first upper fixing portion for fixing an upper portion of the first heating wire.