Patent №
US 5,960,106
Granted
1999-09-28
Filed 1995
Owner
KABUSHIKI KAISHA TOSHIBA
Lab
—
AI components
1
vision
Assignment
Recorded
Dataset
AIPD
2023_r1 edition
Application
08413704
In a method of inspecting a sample on which a pattern relating to fabrication of a semiconductor device is formed, there are provided a light radiation unit, an acquiring unit, a storage unit, a template, a calculation unit, a correction unit, a defect detection unit and an output unit. Pinhole shape data to be detected of the pattern is stored in the template. The calculation unit calculates the degree of coincidence between the pinhole shape data stored in the template and the measured image data stored in the storage unit in units of a predetermined amount of data. The correction unit corrects a portion of the measured image data corresponding to a value of the degree of coincidence exceeding a second predetermined value in units of the predetermined amount of data, when the degree of coincidence obtained by the calculation unit has exceeded a first predetermined value, thereby correcting the portion of the measured image data including the detected pinhole. The defect detection unit detects a defect in the pattern on the basis of the corrected measured image data portion including the pinhole, which is obtained by the correcting unit, and the measured image data.
AI classification
Ownership
KABUSHIKI KAISHA TOSHIBA
assignment · 75390715
Assignors
TSUCHIYA, HIDEO, TOJO, TORU, TABATA, MITSUO
On an employer assignment, the assignors are typically the inventors.