Patents by Inventor Shekhar Pramanick

Shekhar Pramanick 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: 5789310
    Abstract: In the formation of shallow depth junctions, atoms of inner elements, such as helium, argon, xenon or krypton are implanted at a chosen energy and concentration to create microvoids in the epitaxial layer at a chosen depth. Then, upon implantation of boron ions, the implantation of which creates interstitial silicon atoms, during an anneal step the interstitial atoms fill the voids and determine the junction depth.
    Type: Grant
    Filed: December 10, 1996
    Date of Patent: August 4, 1998
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Shekhar Pramanick, Igor C. Ivanov
  • Patent number: 5626967
    Abstract: A structure for patterning a polysilicon layer includes a TiN layer located above an amorphous silicon (a-Si) layer forming a TiN/a-Si stack. The TiN/a-Si stack is located above the polysilicon layer. The TiN layer serves as an ARC to reduce overexposure of the photoresist used to pattern the polysilicon layer, while the a-Si layer prevents contamination of the layer below the polysilicon layer.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: May 6, 1997
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Shekhar Pramanick, Scott Luning, Jonathon Fewkes
  • Patent number: 5617991
    Abstract: Disclosed herein is a method for electrically conductive metal-to-metal bonding. The method for bonding flat metal surfaces comprises the steps of depositing a thin layer of titanium on a first surface of a first metal surface, placing the first surface of the first metal surface in contact with a first surface of a second metal surface in an inert ambiance, heating the inert ambiance to a temperature substantially below the melting point of the metal surfaces, and forming a titanium metal bond between the first metal surface and the second metal surface to provide a low resistive path between the first metal surface and the second metal surface.
    Type: Grant
    Filed: December 1, 1995
    Date of Patent: April 8, 1997
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Shekhar Pramanick, Deepak Nayak
  • Patent number: 5504017
    Abstract: Voids in a metallization pattern comprising a barrier layer, such as those generated by stress migration, are detected by applying a current across a test section of the metallization pattern to generate hot spots which are detected as by employing an infrared microscope or with a liquid crystalline material.
    Type: Grant
    Filed: December 20, 1994
    Date of Patent: April 2, 1996
    Assignee: Advanced Micro Devices, Inc.
    Inventors: John T. Yue, Shekhar Pramanick