5.
    发明专利
    未知

    公开(公告)号:AT470237T

    公开(公告)日:2010-06-15

    申请号:AT03796085

    申请日:2003-12-08

    Applicant: IBM

    Abstract: Disclosed is a method for depositing a metal layer on an interconnect structure for a semiconductor wafer. In the method, a metal conductor is covered by a capping layer and a dielectric layer. The dielectric layer is patterned so as to expose the capping layer. The capping layer is then sputter etched to remove the capping layer and expose the metal conductor. In the process of sputter etching, the capping layer is redeposited onto the sidewall of the pattern. Lastly, at least one layer is deposited into the pattern and covers the redeposited capping layer.

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