Patents by Inventor Yuru Chu

Yuru Chu 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).

  • Device with differential field isolation thicknesses and related methods
    Publication number: 20010001490
    Abstract: A semiconductor device structure with differential field oxide thicknesses. A single field oxidation step produces a nitrided field oxide region (322) that is thinner than a non-nitrided field oxide region (324). The bird's beak (326) of the nitrided field oxide (322) encroaches less into the active cell region than the bird's beak (328) of the thicker non-nitrided field oxide (324). The differential field oxide thicknesses allow isolation of multi-voltage integrated circuit devices, such as flash memory devices, while increasing available active cell area for a given design rule.
    Type: Application
    Filed: December 29, 2000
    Publication date: May 24, 2001
    Inventors: Kuo-Tung Sung, Yuru Chu
  • Device with differential field isolation thicknesses and related methods
    Patent number: 6171927
    Abstract: A semiconductor device structure with differential field oxide thicknesses. A single field oxidation step produces a nitrided field oxide region (322) that is thinner than a non-nitrided field oxide region (324). The bird's beak (326) of the nitrided field oxide (322) encroaches less into the active cell region than the bird's beak (328) of the thicker non-nitrided field oxide (324). The differential field oxide thicknesses allow isolation of multi-voltage integrated circuit devices, such as flash memory devices, while increasing available active cell area for a given design rule.
    Type: Grant
    Filed: June 8, 1998
    Date of Patent: January 9, 2001
    Inventors: Kuo-Tung Sung, Yuru Chu