Determination of the planarization distance for copper CMP process

被引:0
|
作者
Hymes, S [1 ]
Smekalin, K [1 ]
Brown, T [1 ]
Yeung, H [1 ]
Joffe, M [1 ]
Banet, M [1 ]
Park, T [1 ]
Tugbawa, T [1 ]
Boning, D [1 ]
Nguyen, J [1 ]
West, T [1 ]
Sands, W [1 ]
机构
[1] SEMATECH, Austin, TX 78741 USA
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T [工业技术];
学科分类号
08 ;
摘要
A planarization monitor has been applied to the copper system to investigate pattern dependencies during copper overburden planarization. Conventional profilometry and a noncontact, acousto-optic measurement tool, the Insite 300, are utilized to quantify the planarization performance in terms of the defined step-height-reduction-ratio (SHRR). Illustrative results as a function of slurry, pad type and process conditions are presented. For a typical stiff-pad copper CMP process, we determined the planarization distance to be approximately 2mm.
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页码:211 / 216
页数:6
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