Oxide Thickness Measurement of CMP Test Wafer by Dispersive White-light Interferometry

분산형 백색광 간섭계를 이용한 CMP 테스트 웨이퍼의 $SiO_2$ 두께 측정

  • Published : 2007.06.21

Abstract

The dispersive method of white-light interferometry is proper for in-line 3-D inspection of dielectric thin-film thickness to be used in the semiconductor and flat-panel display industry. This research is the measurement application of CMP patterned wafer. The results describe 3-D and 2-D profile of the step height during polishing time.

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