Foreign particle inspection apparatus
AssigneeCanon Kabushiki Kaisha
InventorMichio Kohno
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AssigneeCanon Kabushiki Kaisha
InventorMichio Kohno
Estimating the term…
A foreign particle inspection arrangement includes an optical illumination system that irradiates a predetermined area of a substrate surface with fluorescence exciting ultraviolet light pulses. Fluorescence from a foreign particle on the substrate is directed by an optical detection system to a photoelectric transducer which detects accumulation of fluorescence in response to plural ultraviolet light pulses. An electrical processing system inspects the adherence of the foreign particle to the substrate on the basis of the photoelectric transducer output. A position determining type of photoelectric transducer such as a charge coupled array or pickup tube may be used to determine the position of the foreign particle to avoid misdetection due to readherence. The illumination of a large area keeps the radiation density low to prevent damage to a reticle pattern on the substrate.
An apparatus for inspecting a surface of an object, comprising:
A method for inspecting a surface of an object, comprising:
An exposure apparatus, comprising:
A semiconductor device manufacturing method, comprising:
A semiconductor device manufactured by a method comprising the steps of:
Dependencies are inferred from the claim text.