Patents Represented by Attorney Fletcher Yodar
  • Patent number: 6841438
    Abstract: A memory structure having a vertically oriented access transistor with an annular gate region and a method for fabricating the structure. More specifically, a transistor is fabricated such that the channel of the transistor extends outward with respect to the surface of the substrate. An annular gate is fabricated around the vertical channel such that it partially or completely surrounds the channel. A buried annular bitline may also be implemented. After the vertically oriented transistor is fabricated with the annular gate, a storage device may be fabricated over the transistor to provide a memory cell.
    Type: Grant
    Filed: August 29, 2003
    Date of Patent: January 11, 2005
    Assignee: Micron Technology, Inc.
    Inventors: Lucien J. Bissey, Kevin G. Duesman