21.
    发明专利
    未知

    公开(公告)号:DE602004022435D1

    公开(公告)日:2009-09-17

    申请号:DE602004022435

    申请日:2004-08-20

    Applicant: IBM

    Abstract: A structure and method for a metal replacement gate of a high performance device is provided. A sacrificial gate structure is first formed on an etch stop layer provided on a semiconductor substrate. A pair of spacers is provided on sidewalls of the sacrificial gate structure. The sacrificial gate structure is then removed, forming an opening. Subsequently, a metal gate including an first layer of metal such as tungsten, a diffusion barrier such as titanium nitride, and a second layer of metal such as tungsten is formed in the opening between the spacers.

    Method of forming gate structures for semiconductor devices

    公开(公告)号:GB2409932A

    公开(公告)日:2005-07-13

    申请号:GB0427899

    申请日:2004-12-21

    Applicant: IBM

    Abstract: A method is provided for fabricating a gate structure for a semiconductor device in which the gate structure has an inner spacer. A replacement-gate process is used in which material is removed in a gate region to expose a portion of the substrate; a gate dielectric is formed on the exposed portion of the substrate; and an inner spacer layer is formed overlying the gate dielectric and the dielectric material. A silicon layer is then formed which overlies the inner spacer layer. The structure is then planarized so that portions of the silicon layer and inner spacer layer remain in the gate region. A silicide gate structure is then formed from the silicon; the silicide gate structure is separated from dielectric material surrounding the gate by the inner spacer layer. The semiconductor device may include a first gate region and a second gate region with an interface therebetween, with the inner spacer layer covering the interface. When the device has two gate regions, the process may be used in both gate regions, so as to produce separate silicide structures, with an inner spacer separating the two structures.

    Electronic structure having in-situ resistors

    公开(公告)号:AU9209001A

    公开(公告)日:2002-04-22

    申请号:AU9209001

    申请日:2001-10-05

    Applicant: IBM

    Abstract: An electronic structure that has in-situ formed unit resistors and a method for fabricating such structure are disclosed. The electronic structure that has in-situ formed unit resistors consists of a first plurality of conductive elements formed in an insulating material layer, a plurality of electrically resistive vias formed on top and in electrical communication with at least one of the first plurality of conductive elements, and a second plurality of conductive elements formed on top of and in electrical communication with at least one of the plurality of electrically resistive vias. The present invention novel structure may further be formed in a multi-level configuration such that multi-level resistors may be connected in-series to provide larger resistance values. The present invention novel structure may further be combined with a capacitor network to form desirable RC circuits.

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