- Quantitative Evaluation Method for Etch Sidewall Profile of Through-Silicon Vias (TSVs)
- ㆍ 저자명
- Son. Seung-Nam,Hong. Sang Jeen
- ㆍ 간행물명
- ETRI journal
- ㆍ 권/호정보
- 2014년|36권 4호|pp.617-624 (8 pages)
- ㆍ 발행정보
- 한국전자통신연구원
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
Through-silicon via (TSV) technology provides much of the benefits seen in advanced packaging, such as three-dimensional integrated circuits and 3D packaging, with shorter interconnection paths for homo- and heterogeneous device integration. In TSV, a destructive cross-sectional analysis of an image from a scanning electron microscope is the most frequently used method for quality control purposes. We propose a quantitative evaluation method for TSV etch profiles whereby we consider sidewall angle, curvature profile, undercut, and scallop. A weighted sum of the four evaluated parameters, nominally total score (TS), is suggested for the numerical evaluation of an individual TSV profile. Uniformity, defined by the ratio of the standard deviation and average of the parameters that comprise TS, is suggested for the evaluation of wafer-to-wafer variation in volume manufacturing.