Mosaic diamond pad conditioners for improved CMP performance

James C. Sung*, Ming Yi Tsai, Yang Liang Pai, Cheng Shiang Chou, Chih Chung Chou, Zongqing Yang, Ying Tung Chen, Michael Sung

*Corresponding author for this work

Research output: Chapter in Book/Conference Proceeding/ReportConference Paper published in a bookpeer-review

Abstract

A mosaic design of diamond disks that incorporates different cutting characteristics of diamond grits can allow faster polishing of wafers with less pad consumption. Larger diamond grits can make pad asperities with large peak to valley ratios for achieving high polishing rate. On the other hand, Sharp grits can shave the pad effectively as to eliminate the glazed layer. The conventional diamond disks employ similar type of diamond grits across the entire disk. These grits cannot dress and cut the pad with optimization. By combining different types of diamond grits in a cocktail combination, the pad asperities can be controlled to enhance removal rates of the wafer. The glazed layer may also be removed cleaner so wafer defectivity is minimized.

Original languageEnglish
Title of host publicationChina Semiconductor Technology International Conference 2010, CSTIC 2010
PublisherElectrochemical Society Inc.
Pages575-580
Number of pages6
Edition1
ISBN (Electronic)9781607681564
ISBN (Print)9781607682639
DOIs
Publication statusPublished - 2010
Externally publishedYes
EventChina Semiconductor Technology International Conference 2010, CSTIC 2010 - Shanghai, China
Duration: 18 Mar 201019 Mar 2010

Publication series

NameECS Transactions
Number1
Volume27
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Conference

ConferenceChina Semiconductor Technology International Conference 2010, CSTIC 2010
Country/TerritoryChina
CityShanghai
Period18/03/1019/03/10

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