Photomask repaired from black dot defect

Details Photomask repaired from black dot defect Photomask repaired from black dot defect

1998-08-26

2000-02-29

Rosasco, S.

Radiation imagery chemistry: process, composition, or product th

Radiation modifying product or process of making

Radiation mask

G03F 900

Patent

active

060307307

ABSTRACT:
A method and apparatus for repairing black dot defects connected to a circuit pattern in photomasks such as a photomask having a patterned chromium film on a glass substrate comprises using an energy source in the form of an energy beam to first sever the connected black dot defect from the chrome pattern forming a space between the defect and the chrome pattern. The remaining severed black dot defect is then removed using the same or different energy beam to remove the remainder of the chrome defect. An apparatus for removing black dot defects and photomasks produced by the method and apparatus of the invention are also provided.

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