Soft Chemical Mechanical Polishing Pad for Oxide CMP Applications

書誌事項

公開日
2021-01-01
権利情報
  • http://creativecommons.org/licenses/by-nc-nd/4.0/
  • https://iopscience.iop.org/info/page/text-and-data-mining
DOI
  • 10.1149/2162-8777/abdc40
公開者
The Electrochemical Society

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説明

<jats:p>Chemical mechanical polishing (CMP) is widely accepted as the best planarization technique for fabricating nanoscale devices. A soft CMP pad that can enable higher oxide removal rates (RRs) and good planarity has been proposed for oxide CMP applications. In this study, three pads namely, Pad-1 (hard), Pad-2 (soft), and a commercial pad (hard) were used to polish blanket oxide, and STI patterned wafers. The Pad-2 demonstrated significantly higher RRs and better planarization than the hard pads. Post-polish pad texture analysis on Pad-2 showed a uniform surface asperity distribution. This is due to the novel method of pad manufacturing, which enables precise material placement and consistent pore construction.</jats:p>

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