Patents by Inventor Abula Yu

Abula Yu 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).

  • Publication number: 20060118917
    Abstract: A shallow trench isolation (STI) structure and fabricating method thereof is provided. A substrate is provided. A patterned mask layer is formed over the substrate. Using the patterned mask layer as an etching mask, the substrate is patterned to form a trench. A nitridation process is performed to form a silicon nitride liner on the surface of the trench. An insulating material is deposited to fill the trench. Since the silicon nitride liner within the STI is very thin, residual stress within the substrate is reduced, and the silicon nitride liner has very little or negligible impact on the trench aspect ratio.
    Type: Application
    Filed: January 26, 2006
    Publication date: June 8, 2006
    Inventors: Yoyi Gong, Tony Lin, Jung-Tsung Tseng, Abula Yu
  • Publication number: 20060038261
    Abstract: A shallow trench isolation (STI) structure and fabricating method thereof is provided. A substrate is provided. A patterned mask layer is formed over the substrate. Using the patterned mask layer as an etching mask, the substrate is patterned to form a trench. A nitridation process is performed to form a silicon nitride liner on the surface of the trench. An insulating material is deposited to fill the trench. Since the silicon nitride liner within the STI is very thin, residual stress within the substrate is reduced, and the silicon nitride liner has very little or negligible impact on the trench aspect ratio.
    Type: Application
    Filed: October 24, 2005
    Publication date: February 23, 2006
    Inventors: Yoyi Gong, Tony Lin, Jung-Tsung Tseng, Abula Yu
  • Patent number: 6902994
    Abstract: A method for fabricating a transistor having a fully silicided gate is described. A silicon substrate with a semi-finished transistor formed thereon is provided, wherein the transistor comprises a gate dielectric film, a silicon gate, a cap layer on the silicon gate, a spacer and a source/drain region. A raised source/drain is formed on the source/drain region, and then the cap layer is removed. Subsequently, a full silicidation process is performed to fully silicide the silicon gate.
    Type: Grant
    Filed: August 15, 2003
    Date of Patent: June 7, 2005
    Assignee: United Microelectronics Corp.
    Inventors: Yoyi Gong, Tony Lin, Jung-Tsung Tseng, Abula Yu
  • Publication number: 20050093103
    Abstract: A shallow trench isolation (STI) structure and fabricating method thereof is provided. A substrate is provided. A patterned mask layer is formed over the substrate. Using the patterned mask layer as an etching mask, the substrate is patterned to form a trench. A nitridation process is performed to form a silicon nitride liner on the surface of the trench. An insulating material is deposited to fill the trench. Since the silicon nitride liner within the STI is very thin, residual stress within the substrate is reduced, and the silicon nitride liner has very little or negligible impact on the trench aspect ratio.
    Type: Application
    Filed: October 29, 2003
    Publication date: May 5, 2005
    Inventors: Yoyi Gong, Tony Lin, Jung-Tsung Tseng, Abula Yu
  • Publication number: 20050037558
    Abstract: A method for fabricating a transistor having a fully silicided gate is described. A silicon substrate with a semi-finished transistor formed thereon is provided, wherein the transistor comprises a gate dielectric film, a silicon gate, a cap layer on the silicon gate, a spacer and a source/drain region. A raised source/drain is formed on the source/drain region, and then the cap layer is removed. Subsequently, a full silicidation process is performed to fully silicide the silicon gate.
    Type: Application
    Filed: August 15, 2003
    Publication date: February 17, 2005
    Inventors: Yoyi Gong, Tony Lin, Jung-Tsung Tseng, Abula Yu