Charged particle beam exposure apparatus
First Claim
1. An exposure apparatus which draws a pattern on a substrate with a charged particle beam, comprising:
- a detector configured to detect a charged particle beam;
a deflector configured to deflect the charged particle beam to scan the substrate or said detector with the charged particle beam; and
a controller configured to control said deflector to scan each of a plurality of scanning ranges on said detector with the charged particle beam, and calculates, based on charged particle beam amounts detected by said detector upon scanning the plurality of scanning ranges, an intensity distribution of the charged particle beam which strikes said detector.
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Accused Products
Abstract
An exposure apparatus which draws a pattern on a substrate with a charged particle beam is disclosed. The exposure apparatus includes a detector which detects a charged particle beam, a deflector which deflects the charged particle beam to scan the substrate or the detector with the charged particle beam, and a controller which controls the deflector to scan each of a plurality of scanning ranges on the detector with the charged particle beam, and calculates, on the basis of the charged particle beam amount detected by the detector upon scanning the plurality of scanning ranges, the intensity distribution of the charged particle beam which strikes the detector.
51 Citations
8 Claims
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1. An exposure apparatus which draws a pattern on a substrate with a charged particle beam, comprising:
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a detector configured to detect a charged particle beam; a deflector configured to deflect the charged particle beam to scan the substrate or said detector with the charged particle beam; and a controller configured to control said deflector to scan each of a plurality of scanning ranges on said detector with the charged particle beam, and calculates, based on charged particle beam amounts detected by said detector upon scanning the plurality of scanning ranges, an intensity distribution of the charged particle beam which strikes said detector. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of measuring a line width of a pattern formed by an exposure apparatus which draws the pattern on a substrate with a charged particle beam, the exposure apparatus including a detector which detects a charged particle beam, and a deflector which deflects the charged particle beam to scan the substrate or the detector with the charged particle beam, the method comprising steps of:
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controlling the deflector to scan each of a plurality of scanning ranges on the detector with the charged particle beam, and calculating, based on charged particle beam amounts detected by the detector upon scanning the plurality of scanning ranges, an intensity distribution of the charged particle beam which strikes the detector; and calculating, based on the intensity distribution, a line width of a pattern to be formed on the substrate with the charged particle beam.
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Specification