Patents by Inventor Xingyuan Tang

Xingyuan Tang 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: 8034725
    Abstract: This invention provides a high throughput PECVD process for depositing TEOS films in a multi-station sequential deposition chamber. The methods significantly reduce the number of particles in the TEOS films, thereby eliminating or minimizing small bin defects. The methods of the invention involve dedicating a first station for temperature soak while flowing purge gas. Stopping the flow of reactant gas and flowing the purge gas for station 1 eliminates TEOS condensation on a cold wafer surface and significantly reduces the number of defects in the film, particularly for short temperature soaks.
    Type: Grant
    Filed: March 12, 2010
    Date of Patent: October 11, 2011
    Assignee: Novellus Systems, Inc.
    Inventors: Jon Henri, Xingyuan Tang, Jason Tian, Kevin Gerber, Arul N. Dhas
  • Patent number: 7968436
    Abstract: Copper diffusion barrier films having low dielectric constants are suitable for a variety of copper/inter-metal dielectric integration schemes. Copper diffusion barrier films in accordance with the invention are composed of one or more layers of silicon carbide, at least one of the silicon carbide layers having a composition of at least 40% carbon (C), for example, between about 45 and 60% carbon (C). The films' high carbon-content layer will have a composition wherein the ratio of C to Si is greater than 2:1; or >3:1; or >4:1; or >5.1. The high carbon-content copper diffusion barrier films have a reduced effective k relative to conventional barrier materials.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: June 28, 2011
    Assignee: Novellus Systems, Inc.
    Inventors: Yongsik Yu, Karen Billington, Xingyuan Tang, Haiying Fu, Michael Carris, William Crew
  • Patent number: 7737525
    Abstract: Methods of preparing a carbon doped oxide (CDO) layers having a low dielectric constant are provided. The methods involve, for instance, providing a substrate to a deposition chamber and exposing it to one or multiple carbon-doped oxide precursors having molecules with at least one carbon-carbon triple bond, or carbon-carbon double bond, or a combination of these groups and depositing the carbon doped oxide dielectric layer under conditions in which the resulting dielectric layer has a dielectric constant of not greater than about 2.7.
    Type: Grant
    Filed: November 7, 2007
    Date of Patent: June 15, 2010
    Assignee: Novellus Systems, Inc.
    Inventors: Qingguo Wu, Haiying Fu, Xingyuan Tang
  • Patent number: 7704894
    Abstract: This invention provides a high throughput PECVD process for depositing TEOS films in a multi-station sequential deposition chamber. The methods significantly reduce the number of particles in the TEOS films, thereby eliminating or minimizing small bin defects. The methods of the invention involve dedicating a first station for temperature soak while flowing purge gas. Stopping the flow of reactant gas and flowing the purge gas for station 1 eliminates TEOS condensation on a cold wafer surface and significantly reduces the number of defects in the film, particularly for short temperature soaks.
    Type: Grant
    Filed: November 20, 2006
    Date of Patent: April 27, 2010
    Assignee: Novellus Systems, Inc.
    Inventors: Jon Henri, Xingyuan Tang, Jason Tian, Kevin Gerber, Arul N. Dhas
  • Patent number: 7573061
    Abstract: Copper diffusion barrier films having low dielectric constants are suitable for a variety of copper/inter-metal dielectric integration schemes. Copper diffusion barrier films in accordance with the invention are composed of one or more layers of silicon carbide, at least one of the silicon carbide layers having a composition of at least 40% carbon (C), for example, between about 45 and 60% carbon (C). The films' high carbon-content layer will have a composition wherein the ratio of C to Si is greater than 2:1; or >3:1; or >4:1; or >5.1. The high carbon-content copper diffusion barrier films have a reduced effective k relative to conventional barrier materials.
    Type: Grant
    Filed: August 15, 2007
    Date of Patent: August 11, 2009
    Assignee: Novellus Systems, Inc.
    Inventors: Yongsik Yu, Karen Billington, Xingyuan Tang, Haiying Fu, Michael Carris, William Crew
  • Patent number: 7341761
    Abstract: Methods of preparing a carbon doped oxide (CDO) layers having a low dielectric constant are provided. The methods involve, for instance, providing a substrate to a deposition chamber and exposing it to one or multiple carbon-doped oxide precursors having molecules with at least one carbon—carbon triple bond, or carbon—carbon double bond, or a combination of these groups and depositing the carbon doped oxide dielectric layer under conditions in which the resulting dielectric layer has a dielectric constant of not greater than about 2.7.
    Type: Grant
    Filed: March 11, 2004
    Date of Patent: March 11, 2008
    Assignee: Novellus Systems, Inc.
    Inventors: Qingguo Wu, Haiying Fu, Xingyuan Tang
  • Patent number: 7282438
    Abstract: Copper diffusion barrier films having low dielectric constants are suitable for a variety of copper/inter-metal dielectric integration schemes. Copper diffusion barrier films in accordance with the invention are composed of one or more layers of silicon carbide, at least one of the silicon carbide layers having a composition of at least 40% carbon (C), for example, between about 45 and 60% carbon (C). The films' high carbon-content layer will have a composition wherein the ratio of C to Si is greater than 2:1; or >3:1; or >4:1; or >5.1. The high carbon-content copper diffusion barrier films have a reduced effective k relative to conventional barrier materials.
    Type: Grant
    Filed: June 15, 2004
    Date of Patent: October 16, 2007
    Assignee: Novellus Systems, Inc.
    Inventors: Yongsik Yu, Karen Billington, Xingyuan Tang, Haiying Fu, Michael Carris, William Crew
  • Patent number: 6855645
    Abstract: A low-k precursor reactant compound containing silicon and carbon atoms is flowed into a CVD reaction chamber. High-frequency radio-frequency power is applied to form a plasma. Preferably, the reaction chamber is part of a dual-frequency PECVD apparatus, and low-frequency radio-frequency power is applied to the reaction chamber. Reactive components formed in the plasma react to form low-dielectric-constant silicon carbide (SiC) on a substrate surface. A low-k precursor is characterized by one of: a silicon atom and a carbon—carbon triple bond; a silicon atom and a carbon—carbon double bond; a silicon—silicon bond; or a silicon atom and a tertiary carbon group.
    Type: Grant
    Filed: December 30, 2002
    Date of Patent: February 15, 2005
    Assignee: Novellus Systems, Inc.
    Inventors: Xingyuan Tang, Haiying Fu
  • Patent number: 6777349
    Abstract: Hermetic amorphous doped silicon carbide is deposited on an integrated circuit substrate in a PECVD reactor. Nitrogen-doping of an SiC film is conducted by flowing nitrogen-containing molecules, preferably nitrogen or ammonia gas, into the reactor chamber together with an organosilane, preferably tetramethylsilane, and forming a plasma. Oxygen-doping is conducted by flowing oxygen-containing molecules into the reaction chamber.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: August 17, 2004
    Assignee: Novellus Systems, Inc.
    Inventors: Haiying Fu, Ka Shun Wong, Xingyuan Tang, Judy Hsiu-Chih Huang, Bart Jan van Schravendijk
  • Publication number: 20040126929
    Abstract: A low-k precursor reactant compound containing silicon and carbon atoms is flowed into a CVD reaction chamber. High-frequency radio-frequency power is applied to form a plasma. Preferably, the reaction chamber is part of a dual-frequency PECVD apparatus, and low-frequency radio-frequency power is applied to the reaction chamber. Reactive components formed in the plasma react to form low-dielectric-constant silicon carbide (SiC) on a substrate surface. A low-k precursor is characterized by one of: a silicon atom and a carbon-carbon triple bond; a silicon atom and a carbon-carbon double bond; a silicon-silicon bond; or a silicon atom and a tertiary carbon group.
    Type: Application
    Filed: December 30, 2002
    Publication date: July 1, 2004
    Applicant: Novellus Systems, Inc.
    Inventors: Xingyuan Tang, Haiying Fu
  • Publication number: 20030176080
    Abstract: Hermetic amorphous doped silicon carbide is deposited on an integrated circuit substrate in a PECVD reactor. Nitrogen-doping of an SiC film is conducted by flowing nitrogen-containing molecules, preferably nitrogen or ammonia gas, into the reactor chamber together with an organosilane, preferably tetramethylsilane, and forming a plasma. Oxygen-doping is conducted by flowing oxygen-containing molecules into the reaction chamber.
    Type: Application
    Filed: June 28, 2002
    Publication date: September 18, 2003
    Inventors: Haiying Fu, Ka Shun Wong, Xingyuan Tang, Judy Hsiu-Chih Huang, Bart Jan van Schravendijk