Comparison study of diffraction based overlay and image based overlay measurements on programmed overlay errors

Author:

Gao Haiyong1,Chung Woong Jae1,Aung Nyan1,Subramany Lokesh1,Samudrala Pavan1,Gomez Juan-Manuel1

Affiliation:

1. GLOBALFOUNDRIES (United States)

Publisher

SPIE

Reference5 articles.

1. Scatterometry-based metrology for the 14 nm node double patterning lithography;Carau,2015

2. Improvement of depth of focus control using wafer geometry

3. Scatterometry or imaging overlay: a comparative study

4. Diffraction Based Overlay and Image Based Overlay on production flow for advanced technology node;Blancquaert,2013

5. Differential Signal Scatterometry Overlay Metrology: An Accuracy Investigation;Kandel,2007

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