Removal and prevention of photo-induced defects on photomasks used in photolithography

Photoinduced defects that occur on photomasks used in photolithography may be removed or prevented. In one example a photomask is installed into a vacuum chamber, the contaminants on the photomask are broken down with heat, illumination or both and the broken-down contaminants are removed with a vac...

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Hauptverfasser:	ESCHBACH FLORENCE, SENGUPTA ARCHITA, YUN HENRY K
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS SPECIALLY ADAPTED THEREFOR BASIC ELECTRIC ELEMENTS CINEMATOGRAPHY CLEANING CLEANING IN GENERAL ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY ELECTROGRAPHY HOLOGRAPHY MATERIALS THEREFOR ORIGINALS THEREFOR PERFORMING OPERATIONS PHOTOGRAPHY PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES PHYSICS PREVENTION OF FOULING IN GENERAL SEMICONDUCTOR DEVICES TRANSPORTING
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creator	ESCHBACH FLORENCE SENGUPTA ARCHITA YUN HENRY K
description	Photoinduced defects that occur on photomasks used in photolithography may be removed or prevented. In one example a photomask is installed into a vacuum chamber, the contaminants on the photomask are broken down with heat, illumination or both and the broken-down contaminants are removed with a vacuum.
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title	Removal and prevention of photo-induced defects on photomasks used in photolithography
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