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:
May. 15, 2023
Samsung Electronics Co., Ltd., Suwon-si, KR;
Garam Choi, Suwon-si, KR;
Wookrae Kim, Suwon-si, KR;
Jinseob Kim, Suwon-si, KR;
Jinyong Kim, Suwon-si, KR;
Sungho Jang, Suwon-si, KR;
Younguk Jin, Suwon-si, KR;
Daehoon Han, Suwon-si, KR;
Samsung Electronics Co., Ltd., Gyeonggi-do, KR;
Abstract
A semiconductor measurement apparatus may include an illumination unit configured to irradiate light to the sample, an image sensor configured to receive light reflected from the sample and output multiple interference images representing interference patterns of polarization components of light, an optical unit in a path through which the image sensor receives light and including an objective lens above the sample, and a control unit configured to obtain, by processing the multi-interference image, measurement parameters determined from the polarization components at each of a plurality of azimuth angles defined on a plane perpendicular to a path of light incident to the image sensor. The control unit may be configured to determine a selected critical dimension to be measured from a structure in the sample based on measurement parameters. The illumination unit and/or the optical unit may include a polarizer and a compensator having a ¼ wave plate.