Patents by Inventor Mark A. McQueen

Mark A. McQueen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5364814
    Abstract: A method of fabricating a stacked capacitor memory cell having a reduced leakage storage node includes the steps of providing a P-type substrate, forming wordlines on a thin gate oxide layer and a field oxide layer, and forming a first conformal TEOS oxide layer. The P-type substrate is doped with an N-type dopant directly through the first TEOS oxide layer to form two N-type diffused areas, which are the first and second current terminals of the memory cell access transistor. A second conformal TEOS oxide layer is deposited. The oxide layers are etched to form a buried contact window above the storage node of the memory cell. The exposed portion of the N-type diffused area forming the memory cell storage node is subsequently doped with germanium through the buried contact window to suppress any outdiffusion due to the doping of subsequently formed layers, such as the first plate of a stacked polysilicon capacitor.
    Type: Grant
    Filed: October 6, 1993
    Date of Patent: November 15, 1994
    Assignee: Micron Technology, Inc.
    Inventor: Mark A. McQueen