Measuring surface uniformity in chemical mechanical polishing
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Baik, Jae-won | - |
dc.contributor.author | Kang,Changwook | - |
dc.date.accessioned | 2021-06-23T16:39:32Z | - |
dc.date.available | 2021-06-23T16:39:32Z | - |
dc.date.created | 2021-01-22 | - |
dc.date.issued | 2009-09 | - |
dc.identifier.issn | 1022-6680 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/41801 | - |
dc.description.abstract | Chemical mechanical polishing (CMP) is a technique used in semiconductor fabrication for planarizing the top surface of an in-process semiconductor wafer. Especially, Post-CMP thickness variations are known to have a severe impact on the stability of downstream processes and ultimately on device yield. Hence understanding how to quantify and characterize this non-uniformity is significant step towards statistical process control to achieve higher quality and enhanced productivity. The main reason is that the non-uniformed interface between the wafer and the machine-pad adversely affects the polishing performance and ultimate surface uniformity. The purpose of this paper is to suggest a new measure that estimates the uniformity of wafer surface considering the difference of the amount of abrasion between the center and the edge. This new measure which is called the Coefficient of Uniformity is defined as the following ratio: Geometric Mean (GM) / Arithmetic Mean (AM). This metric can be evaluated regionally to quantify the non-uniformity on the wafer surface from the center to the edge. Further simulations show that this new measure is insensitive to shift of the wafer center and sensitive to shift of the wafer edge. This trend indicates that this new measure is a very useful to test the non-uniformity of wafer after CMP polishing. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | Trans Tech | - |
dc.title | Measuring surface uniformity in chemical mechanical polishing | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kang,Changwook | - |
dc.identifier.doi | 10.4028/www.scientific.net/AMR.76-78.459 | - |
dc.identifier.scopusid | 2-s2.0-73949153399 | - |
dc.identifier.bibliographicCitation | Advanced Materials Research, v.76-78, pp.459 - 464 | - |
dc.relation.isPartOf | Advanced Materials Research | - |
dc.citation.title | Advanced Materials Research | - |
dc.citation.volume | 76-78 | - |
dc.citation.startPage | 459 | - |
dc.citation.endPage | 464 | - |
dc.type.rims | ART | - |
dc.type.docType | Conference Paper | - |
dc.description.journalClass | 3 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | other | - |
dc.subject.keywordPlus | Arithmetic mean | - |
dc.subject.keywordPlus | Coefficient of uniformity | - |
dc.subject.keywordPlus | Downstream process | - |
dc.subject.keywordPlus | Geometric mean | - |
dc.subject.keywordPlus | In-process | - |
dc.subject.keywordPlus | Nonuniformity | - |
dc.subject.keywordPlus | Planarizing | - |
dc.subject.keywordPlus | Semi-conductor fabrication | - |
dc.subject.keywordPlus | Semi-conductor wafer | - |
dc.subject.keywordPlus | Surface uniformity | - |
dc.subject.keywordPlus | Thickness variation | - |
dc.subject.keywordPlus | Top surface | - |
dc.subject.keywordPlus | Wafer edge | - |
dc.subject.keywordPlus | Wafer surface | - |
dc.subject.keywordPlus | Abrasives | - |
dc.subject.keywordPlus | Chemical mechanical polishing | - |
dc.subject.keywordPlus | Computational fluid dynamics | - |
dc.subject.keywordPlus | Nanotechnology | - |
dc.subject.keywordPlus | Polishing | - |
dc.subject.keywordPlus | Quality control | - |
dc.subject.keywordPlus | Silicon wafers | - |
dc.subject.keywordPlus | Statistical process control | - |
dc.subject.keywordPlus | Chemical polishing | - |
dc.subject.keywordAuthor | Arithmetic mean | - |
dc.subject.keywordAuthor | Chemical mechanical polishing | - |
dc.subject.keywordAuthor | Geometric mean | - |
dc.subject.keywordAuthor | Non-uniformity | - |
dc.identifier.url | https://www.scientific.net/AMR.76-78.459 | - |
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