{"title":"Increase in EM resistance by planarizing dielectric film over Al wirings","authors":"A. Isobe, Y. Numazawa, M. Sakamoto","doi":"10.1109/VMIC.1989.78019","DOIUrl":null,"url":null,"abstract":"The relation between EM (electromigration) characteristics and interlayer dielectric film structure is described. It was found that a well-planarized interlayer significantly increases EM resistance for underlying Al wirings. This EM improvement is attributed to reinforcement and crack suppression at interlayer sidewalls. A constant atom flux model is proposed that explains the mechanism for this phenomenon.<<ETX>>","PeriodicalId":302853,"journal":{"name":"Proceedings., Sixth International IEEE VLSI Multilevel Interconnection Conference","volume":"30 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1989-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings., Sixth International IEEE VLSI Multilevel Interconnection Conference","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/VMIC.1989.78019","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
Abstract
The relation between EM (electromigration) characteristics and interlayer dielectric film structure is described. It was found that a well-planarized interlayer significantly increases EM resistance for underlying Al wirings. This EM improvement is attributed to reinforcement and crack suppression at interlayer sidewalls. A constant atom flux model is proposed that explains the mechanism for this phenomenon.<>