4.
    发明专利
    未知

    公开(公告)号:DE102005051819B3

    公开(公告)日:2007-06-14

    申请号:DE102005051819

    申请日:2005-10-28

    Abstract: In a method for producing a semiconductor structure a substrate is provided, a dielectric layer comprising at least one metal oxide is formed on the substrate, and a nitrided layer is formed from the dielectric layer. The nitrided layer comprises either at least one metal nitride corresponding to the metal oxide or a metal oxynitride. The nitrided layer is removed selectively with respect to the dielectric layer in a predetermined etching medium.

    7.
    发明专利
    未知

    公开(公告)号:DE102004022602A1

    公开(公告)日:2005-12-15

    申请号:DE102004022602

    申请日:2004-05-07

    Abstract: A memory cell having a trench capacitor, a trench capacitor, and a method is disclosed. In one embodiment, the method for fabricating a trench capacitor with a first capacitor electrode, a first capacitor dielectric, a second capacitor electrode, a second capacitor dielectric and third capacitor electrode, includes connecting the first and third capacitor electrodes. The first and third capacitor electrodes are formed by conformal deposition methods, whereas the first capacitor dielectric, the second capacitor electrode and the second capacitor dielectric are formed by nonconformal deposition methods.

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