Patent ID: 11911811
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Chemical engineering (Chemistry)
Classification: CPC B  C | IPC B  C

Claim 0:
1. A method of cleaning a deposition mask, the method comprising:
disposing a substrate and a mask on a stage within a chamber in which material deposition is performable on the substrate using the mask, the chamber comprising a bottom portion including a first guide rail extending along a first direction in the chamber;
depositing a deposition material on an area of a top surface of the substrate which is exposed by the mask and on a top surface of the mask, the depositing of the deposition material comprising a deposition unit in the chamber and providing the deposition material; and
reflecting light provided into the chamber from an irradiation unit disposed outside the chamber, through a reflection member connected to the deposition unit and reciprocally movable along the first guide rail, in the chamber, the reflection member providing the light to the top surface of the mask to clean the deposition material from the top surface of the mask,
wherein the depositing of the deposition material and the cleaning of the deposition material are each performed in a vacuum state within the chamber.