公开(公告)号：US20040113278A1

公开(公告)日：2004-06-17

申请号：US10319032

申请日：2002-12-12

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Timothy J. Dalton ,  Sanjit K. Das ,  Brett H. Engel ,  Brian W. Herbst ,  Habib Hichri ,  Bernd E. Kastenmeier ,  Kelly Malone ,  Jeffrey R. Marino ,  Arthur Martin ,  Vincent J. McGahay ,  Ian D. Melville ,  Chandrasekhar Narayan ,  Kevin S. Petrarca ,  Richard P. Volant

IPC: H01L023/48

CPC classification number: H01L21/76808 ,  H01L21/76801 ,  H01L21/76831 ,  H01L23/5226 ,  H01L23/5329 ,  H01L2924/0002 ,  H01L2924/12044 ,  H01L2924/00

Abstract: An interconnect structure for a semiconductor device includes an organic, low dielectric constant (low-k) dielectric layer formed over a lower metallization level. A via formed is within the low-k dielectric layer, the via connecting a lower metallization line formed in the lower metallization level with an upper metallization line formed in an upper metallization level. The via is surrounded by a structural collar selected from a material having a coefficient of thermal expansion (CTE) so as to protect the via from shearing forces following a thermal expansion of the low-k dielectric layer.