Charged particle beam apparatus and processing method
First Claim
1. A charged particle beam apparatus comprising:
- a charged particle beam column configured to irradiate a charged particle beam to a first region and a second region of a sample, the second region included in the first region;
a controller configured to control the charged particle beam column to irradiate the charged particle beam to the first region and the second region of the sample, the first region including a plurality of first pixels at a first pixel interval, each of the first pixels including a first predetermined number of first sub-pixels, the second region including a plurality of second pixels at a second pixel interval different from the first pixel interval, each of the second pixels including a second predetermined number of second sub-pixels, wherein the controller is configured to control the charged particle beam column to irradiate the charged particle beam to each of the first sub-pixels at the first pixel interval for the first region and to irradiate the charged particle beam to each of the second sub-pixels at the second pixel interval for the second region;
a secondary electron detector configured to detect first secondary electrons for each of the first sub-pixels generated by irradiating the charged particle beam to each of the first sub-pixels at the first pixel interval for the first region, to generate a first signal of the first secondary electrons for each of the first sub-pixels, to detect second secondary electrons for each of the second sub-pixels generated by irradiating the charged particle beam to each of the second sub-pixels at the second pixel interval for the second region, and to generate a second signal of the second secondary electrons for each of the second sub-pixels; and
an image forming unit configured to form first sub-pixel images by using the first signal, the number of the first sub-pixel images being the first predetermined number, to generate a first image by synthesizing the predetermined number of the first sub-pixel images, and to form second sub-pixel images by using the second signal, the number of the second sub-pixel images being the second predetermined number, to generate a second image by synthesizing the predetermined number of the second sub-pixel images.
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Accused Products
Abstract
A charged particle beam apparatus has a charged particle beam column configured to irradiate a charged particle beam, and a controller configured to control the charged particle beam column to irradiate the charged particle beam at a first pixel interval for a first region and to irradiate the charged particle beam at a second pixel interval different from the first pixel interval for a second region included in the first region. The first and second regions include plural first and second pixels each including first and second sub-pixels which are irradiated by the charged particle beam to generate secondary electrons. First and second sub-pixel images are formed based on the detected secondary electrons, and the first and second sub-pixel images are synthesized to form first and second images.
5 Citations
6 Claims
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1. A charged particle beam apparatus comprising:
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a charged particle beam column configured to irradiate a charged particle beam to a first region and a second region of a sample, the second region included in the first region; a controller configured to control the charged particle beam column to irradiate the charged particle beam to the first region and the second region of the sample, the first region including a plurality of first pixels at a first pixel interval, each of the first pixels including a first predetermined number of first sub-pixels, the second region including a plurality of second pixels at a second pixel interval different from the first pixel interval, each of the second pixels including a second predetermined number of second sub-pixels, wherein the controller is configured to control the charged particle beam column to irradiate the charged particle beam to each of the first sub-pixels at the first pixel interval for the first region and to irradiate the charged particle beam to each of the second sub-pixels at the second pixel interval for the second region; a secondary electron detector configured to detect first secondary electrons for each of the first sub-pixels generated by irradiating the charged particle beam to each of the first sub-pixels at the first pixel interval for the first region, to generate a first signal of the first secondary electrons for each of the first sub-pixels, to detect second secondary electrons for each of the second sub-pixels generated by irradiating the charged particle beam to each of the second sub-pixels at the second pixel interval for the second region, and to generate a second signal of the second secondary electrons for each of the second sub-pixels; and an image forming unit configured to form first sub-pixel images by using the first signal, the number of the first sub-pixel images being the first predetermined number, to generate a first image by synthesizing the predetermined number of the first sub-pixel images, and to form second sub-pixel images by using the second signal, the number of the second sub-pixel images being the second predetermined number, to generate a second image by synthesizing the predetermined number of the second sub-pixel images. - View Dependent Claims (2, 3, 4, 5)
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6. A processing method of a sample including a first region and a second region, the second region included in the first region, the method comprising:
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controlling a charged particle beam column to irradiate a charged particle beam to the first region and the second region of the sample, the first region including a plurality of first pixels at a first pixel interval, each of the first pixels including a first predetermined number of first sub-pixels, the second region including a plurality of second pixels at a second pixel interval different from the first pixel interval, each of the second pixels including a second predetermined number of second sub-pixels; irradiating the charged particle beam to each of the first sub-pixels at the first pixel interval for the first region by controlling the charged particle beam column; irradiating the charged particle beam to each of the second sub-pixels at the second pixel interval by controlling the charged particle beam column; detecting first secondary electrons for each of the first sub-pixels generated by irradiating the charged particle beam to each of the first sub-pixels at the first pixel interval for the first region; generating a first signal of the first secondary electrons for each of the first sub-pixels by detecting first secondary electrons; detecting second secondary electrons for each of the second sub-pixels generated by irradiating the charged particle beam to each of the second sub-pixels at the second pixel interval for the second region; generating a second signal of the second secondary electrons for each of the second sub-pixels by detecting second secondary electrons; forming first sub-pixel images by using the first signal, the number of the first sub-pixel images being the first predetermined number; generating a first image by synthesizing the predetermined number of the first sub-pixel images; forming second sub-pixel images by using the second signal, the number of the second sub-pixel images being the second predetermined number; and generating a second image by synthesizing the predetermined number of the second sub-pixel images.
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Specification