Patent ID: 10937628

Abstract:
The purpose of the present invention is to provide a charged particle beam device with which it is possible to identify, to a high degree of accuracy, repeat patterns generated by a multiple exposure method such as SADP or SAQP. In order to achieve this purpose, there is proposed a charged particle beam device for: irradiating a first position on a sample with a charged particle beam to form an irradiation mark on the sample; after the formation of the irradiation mark, scanning the charged particle beam on a first visual field which includes the first position and which is larger than the irradiation mark, and thereby acquiring a first image; scanning the charged particle beam on a second visual field which includes the first position, which is larger than the irradiation mark, and which is in a different position from the first visual field, thereby acquiring a second image; and synthesizing the first image and the second image so as to overlap the irradiation marks included in the first image and the second image.