SYSTEM AND METHOD FOR FACILITATING CHEMICAL MECHANICAL POLISHING

Described herein is a method for facilitating chemical mechanical polishing. The method comprises determining contact mechanics information indicative of contact pressures and friction forces between a wafer and a pad during the chemical mechanical polishing at a plurality of locations across the wa...

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Bibliographic Details
Main Authors ZHANG, Huaichen, VAN LARE, Marie-Claire
Format Patent
LanguageEnglish
French
Published 23.04.2020
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Summary:Described herein is a method for facilitating chemical mechanical polishing. The method comprises determining contact mechanics information indicative of contact pressures and friction forces between a wafer and a pad during the chemical mechanical polishing at a plurality of locations across the wafer. The contact pressures and friction forces are asymmetrically distributed across the wafer. The method also includes determining a post chemical mechanical polishing surface topography of the wafer based at least on the contact mechanics information. La présente invention concerne un procédé destiné à faciliter le polissage chimico-mécanique. Le procédé consiste à déterminer des informations de mécanique de contact indiquant des pressions de contact et des forces de frottement entre une tranche et un tampon pendant le polissage chimico-mécanique au niveau d'une pluralité d'emplacements à travers la tranche. Les pressions de contact et les forces de frottement sont réparties de manière asymétrique à travers la tranche. Le procédé consiste également à déterminer une topographie de surface post-polissage chimico-mécanique de la tranche en fonction au moins des informations de mécanique de contact.
Bibliography:Application Number: WO2019EP76795