The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 23, 2025
Filed:
Dec. 16, 2020
Hitachi High-tech Corporation, Tokyo, JP;
Long Zhang, Tokyo, JP;
Takuma Yamamoto, Tokyo, JP;
Hitachi High-Tech Corporation, Tokyo, JP;
Abstract
The purpose of the present disclosure is to provide a pattern measurement device that can accurately measure positional deviation between a center of gravity of a top surface of a pattern and a center of gravity of a bottom surface of the pattern, even when an incidence angle of a charged particle beam varies for each irradiation position of the charged particle beam. The pattern measurement device according to the present disclosure acquires an angular deviation amount corresponding to coordinates in a visual field of a pattern in accordance with a relationship between the coordinates in the visual field of the pattern and an angular deviation amount of the charged particle beam, and acquires a positional deviation amount corresponding to the coordinates in the visual field of the pattern in accordance with a relationship between the angular deviation amount and the center of gravity positional deviation amount (see FIG.).