Patent ID: 6071376
Filing Date: 2000-06-06
Classification: G03F,Y10S

Abstract:
An apparatus for cleaning a photomask comprising:an acid tank for cleaning the surface of a photomask used as a master in a photolithography step in a process for the production of a semiconductor device with a hot mixture of sulfuric acid and hydrogen peroxide to decompose organic objects present thereon and remove metallic impurities;a electrolytic water production unit;a rinsing tank for cleaning the surface of said photomask with anodic water produced in the electrolytic water production unit;a foreign object removal tank for cleaning the surface of said photomask with cathodic water produced in said electrolytic water production unit;a drying tank for drying said photomask thus cleaned; anda cleaning fluid supplying/controlling means for controlling the respective cleaning fluid to be supplied into said acid tank, rinsing tank and foreign object removal tank within a predetermined concentration or temperature.