CHARGED PARTICLE BEAM APPARATUS
First Claim
1. A charged particle beam apparatus comprising:
- a sample table on which a sample is placed;
a stage for displacing the sample table to bring a certain position of the sample into a measurement point;
an irradiation mechanism for irradiating the certain point of the sample with a charged particle beam;
a detection mechanism for detecting secondary charged particles produced by the irradiation of the charged particle beam;
a display mechanism for creating image data about the sample based on the detected secondary charged particles, the display mechanism having a display portion for displaying the image data as a sample image;
a storage portion for previously storing three-dimensional data about the irradiation mechanism and about the detection mechanism such that the three-dimensional data are interrelated with a stage coordinate system for the stage;
a conversion portion for converting previously entered three-dimensional data about the sample into the stage coordinate system based on a posture and a position of the placed sample; and
a decision portion for making a decision in advance as to whether the sample will interfere by making a simulation of positional relationships among the sample, the irradiation mechanism, and the detection mechanism based on data converted by the conversion portion and on data stored in the storage portion when the certain position of the sample is brought into the measurement point, the decision portion also reporting results of the decision.
1 Assignment
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Accused Products
Abstract
A charged particle beam instrument is offered which comprises an irradiation mechanism for irradiating a sample with a charged particle beam (FIB/EB), a detection mechanism for detecting secondary charged particles produced by the irradiation by the charged particle beam, a storage portion for previously storing three-dimensional data about the irradiation mechanism and detection mechanism in an interrelated manner to the stage coordinate system W, a conversion portion for converting three-dimensional data about the sample into the stage coordinate system, and a decision portion for simulating the positional relationships among the sample, irradiation mechanism, and detection mechanism based on data converted by the conversion portion and on data stored in the storage portion when a certain position on the sample is placed into a measurement point and for previously making a decision as to whether the sample will interfere and making a report of the result of the decision.
30 Citations
7 Claims
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1. A charged particle beam apparatus comprising:
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a sample table on which a sample is placed; a stage for displacing the sample table to bring a certain position of the sample into a measurement point; an irradiation mechanism for irradiating the certain point of the sample with a charged particle beam; a detection mechanism for detecting secondary charged particles produced by the irradiation of the charged particle beam; a display mechanism for creating image data about the sample based on the detected secondary charged particles, the display mechanism having a display portion for displaying the image data as a sample image; a storage portion for previously storing three-dimensional data about the irradiation mechanism and about the detection mechanism such that the three-dimensional data are interrelated with a stage coordinate system for the stage; a conversion portion for converting previously entered three-dimensional data about the sample into the stage coordinate system based on a posture and a position of the placed sample; and a decision portion for making a decision in advance as to whether the sample will interfere by making a simulation of positional relationships among the sample, the irradiation mechanism, and the detection mechanism based on data converted by the conversion portion and on data stored in the storage portion when the certain position of the sample is brought into the measurement point, the decision portion also reporting results of the decision. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification