3 Wafer inspection apparatus using 3-dimensional image and method for wafer inspection using the same

A technical idea of the present invention provides a wafer inspection device which comprises: a stage configured to arrange a wafer; an optical device configured to align the wafer on the stage and configured to generate an optical intensity image including an optical intensity profile; a focus adju...

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Bibliographic Details
Main Authors SOHN YOUNG HOON, RYU SUNG YOON, YANG YU SIN
Format Patent
LanguageEnglish
Korean
Published 22.06.2023
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Summary:A technical idea of the present invention provides a wafer inspection device which comprises: a stage configured to arrange a wafer; an optical device configured to align the wafer on the stage and configured to generate an optical intensity image including an optical intensity profile; a focus adjustment unit configured to align light incident on the wafer into an in-focus; and an image processing device that generates and analyzes a 3-dimensional image by integrally processing the optical intensity image and vertical level data of the in-focus. 본 발명의 기술적 사상은, 웨이퍼가 배치되도록 구성되는 스테이지(stage); 상기 웨이퍼를 상기 스테이지 상에 얼라인하도록 구성되며, 광세기 프로파일을 포함하는 광세기 영상을 생성하도록 구성된 광학 장치; 상기 웨이퍼로 입사되는 광을 정 포커스(in-focus)로 정렬하도록 구성된 포커스 조정부; 및 상기 광세기 영상 및 상기 정 포커스의 수직 레벨 데이터들을 통합 처리하여 3차원 영상(3-dimensional image)을 생성하고 분석하는 영상처리장치;를 포함하는 것을 특징으로 하는 웨이퍼 검사 장치를 제공한다.
Bibliography:Application Number: KR20210179975