Patents by Inventor Abha Rani Singh

Abha Rani Singh 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).

  • Double mask hermetic passivation structure
    Patent number: 5698456
    Abstract: A passivation structure is formed using two passivation layers and a protective overcoat layer using two masking steps. The first passivation layer is formed over the wafer and openings are provided to expose portions of the pads for testing the device and fusible links. After testing and laser repair, a second passivation layer is formed over the wafer followed a deposit of the protective overcoat. The protective overcoat is patterned and etched, exposing the pads. The remaining portions of the protective overcoat are used as a mask to remove portions of the second passivation layer overlying the pads. Leads are then attached to pads and the devices are encapsulated for packaging.
    Type: Grant
    Filed: May 22, 1996
    Date of Patent: December 16, 1997
    Assignee: SGS-Thomson Microelectronics, Inc.
    Inventors: Frank Randolph Bryant, Abha Rani Singh
  • Double mask hermetic passivation structure
    Patent number: 5698894
    Abstract: A passivation structure is formed using two passivation layers and a protective overcoat layer using two masking steps. The first passivation layer is formed over the wafer and openings are provided to expose portions of the pads for testing the device and fusible links. After testing and laser repair, a second passivation layer is formed over the wafer followed a deposit of the protective overcoat. The protective overcoat is patterned and etched, exposing the pads. The remaining portions of the protective overcoat are used as a mask to remove portions of the second passivation layer overlying the pads. Leads are then attached to pads and the devices are encapsulated for packaging.
    Type: Grant
    Filed: October 28, 1996
    Date of Patent: December 16, 1997
    Assignee: SGS-Thomson Microelectronics, Inc.
    Inventors: Frank Randolph Bryant, Abha Rani Singh