Patents by Inventor Duofeng Yue

Duofeng Yue 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: 20060138355
    Abstract: Methods (300, 400) are described for calibrating the implantation angle of an ion implanter utilized in the manufacture of semiconductor products. One method (300) includes implanting (330) phosphorous ions into a pilot wafer held by a wafer platen held at a starting implantation angle in the ion implanter. The phosphorous implantation into a p-doped substrate of the pilot or blank wafer, for example, forms a semiconductive sheet. The method (300) then includes changing the implantation angle (340), and implanting another wafer (330) with phosphorous ions. The angle changing (340) and implanting (330) of other wafers continues in this manner until all wafers or angles are implanted (350) as desired. The phosphorous implanted wafers are then measured (360) with a four-point probe, for example, to obtain the sheet resistance of all the implanted wafers.
    Type: Application
    Filed: December 29, 2004
    Publication date: June 29, 2006
    Inventors: Duofeng Yue, Jeffrey Loewecke, JieJie Xu, Thomas Conroy
  • Publication number: 20060121724
    Abstract: The present invention provides a method for forming an interconnect on a semiconductor substrate 100. The method includes forming an opening 230 over an inner surface of the opening 130, the depositing forming a reentrant profile near a top portion of the opening 130. A portion of barrier 230 is etched, which removes at least a portion of the barrier 230 to reduce the reentrant profile. The etching also removes at least a portion of the barrier 230 layer at the bottom of the opening 130.
    Type: Application
    Filed: December 2, 2004
    Publication date: June 8, 2006
    Applicant: Texas Instruments, Inc.
    Inventors: Duofeng Yue, Stephan Grunow, Satyavolu Papa Rao, Noel Russell, Montray Leavy
  • Patent number: 7029967
    Abstract: A method for forming metal silicide regions in source and drain regions (160, 170) is described. Prior to the thermal annealing of the source and drain regions (160, 170), germanium is implanted into a semiconductor substrate adjacent to sidewall structures (90, 95) formed adjacent gate structures (60, 70). The position of the implanted germanium species in the semiconductor substrate will overlap the source and drain regions (160, 170). Following thermal annealing of the source and drain regions (160, 170), the implanted germanium prevents the formation of metal silicide spikes.
    Type: Grant
    Filed: July 21, 2004
    Date of Patent: April 18, 2006
    Assignee: Texas Instruments Incorporated
    Inventors: Song Zhao, Sue E. Crank, Amitava Chatterjee, Kaiping Liu, Jiong-Ping Lu, Donald S. Miles, Duofeng Yue, Lance S. Robertson
  • Publication number: 20060024935
    Abstract: The present invention provides a method of manufacturing a metal silicide electrode (100) for a semiconductor device (110). The method comprises implanting small atoms into an nMOS semiconductor substrate (130) to a depth (132) no greater than about 30 nanometers into the nMOS semiconductor substrate. The method further comprises depositing a transition metal layer (400) over the nMOS semiconductor substrate. The transition metal layer and the nMOS semiconductor substrate are reacted to form the metal silicide electrode. Other aspects of the present invention include a method of manufacturing an integrated circuit (700).
    Type: Application
    Filed: July 30, 2004
    Publication date: February 2, 2006
    Applicant: Texas Instruments Incorporated
    Inventors: Duofeng Yue, Peijun Chen, Sue Crank, Thomas Bonifield, Jiong-Ping Lu, Jie-Jie Xu
  • Publication number: 20060024938
    Abstract: The present invention provides a method for manufacturing a semiconductor device, and a method for manufacturing an integrated circuit including the semiconductor device, and a semiconductor device. The method for manufacturing a semiconductor device, among other steps, includes forming source/drain regions (290) in a substrate (210), the source/drain regions (290) located proximate a gate structure having sidewall spacers (270) and positioned over the substrate (210), and modifying a footprint of the sidewall spacers (270) by forming protective regions (410) proximate a base of the sidewall spacers (270). The method further includes forming metal silicide regions (610) in the source/drain regions (290).
    Type: Application
    Filed: July 29, 2004
    Publication date: February 2, 2006
    Applicant: Texas Instruments, Incorporated
    Inventors: Duofeng Yue, Peijun Chen, Jiong-Ping Lu, Thomas Bonifield, Noel Russell
  • Publication number: 20060024882
    Abstract: The present invention provides a method for manufacturing a semiconductor device, and a method for manufacturing an integrated circuit including the semiconductor devices. The method for manufacturing a semiconductor device (100) , among other steps, includes forming a gate structure (120) over a substrate (110) and forming source/drain regions (190) in the substrate (110) proximate the gate structure (120). The method further includes subjecting the gate structure (120) and substrate (110) to a dry etch process and placing fluorine in the source/drain regions to form fluorinated source/drains (320) subsequent to subjecting the gate structure (120) and substrate (110) to the dry etch process. Thereafter, the method includes forming metal silicide regions (510, 520) in the gate structure (120) and the fluorinated source/drains (320).
    Type: Application
    Filed: July 29, 2004
    Publication date: February 2, 2006
    Applicant: Texas Instruments, Incorporated
    Inventors: Jiong-Ping Lu, Clint Montgomery, Lindsey Hall, Donald Miles, Duofeng Yue, Thomas Bonifield
  • Publication number: 20060019478
    Abstract: A method for forming metal silicide regions in source and drain regions (160, 170) is described. Prior to the thermal annealing of the source and drain regions (160, 170), germanium is implanted into a semiconductor substrate adjacent to sidewall structures (90, 95) formed adjacent gate structures (60, 70). The position of the implanted germanium species in the semiconductor substrate will overlap the source and drain regions (160, 170). Following thermal annealing of the source and drain regions (160, 170), the implanted germanium prevents the formation of metal silicide spikes.
    Type: Application
    Filed: July 21, 2004
    Publication date: January 26, 2006
    Inventors: Song Zhao, Sue Crank, Amitava Chatterjee, Kaiping Liu, Jiong-Ping Lu, Donald Miles, Duofeng Yue, Lance Robertson
  • Publication number: 20050208762
    Abstract: The present invention provides a method of manufacturing a metal silicide electrode (100) for a semiconductor device (110). The method comprises depositing by physical vapor deposition, halogen atoms (120) and transition metal atoms (130) to form a halogen-containing metal layer (140) on a semiconductor substrate (150). The halogen-containing metal layer and the semiconductor substrate are reacted to form a metal silicide electrode. Other aspects of the present invention include a method of manufacturing an integrated circuit (400) comprising the metal silicide electrode.
    Type: Application
    Filed: July 30, 2004
    Publication date: September 22, 2005
    Applicant: Texas Instruments Incorporated
    Inventors: Peijun Chen, Duofeng Yue, Douglas Mercer, Noel Russell
  • Publication number: 20050208764
    Abstract: Fluorine containing regions (70) are formed in the source and drain regions (60) of the MOS transistor. A metal layer (90) is formed over the fluorine containing regions (70) and the source and drain regions (60). The metal layer is reacted with the underlying fluorine containing regions to form a metal silicide.
    Type: Application
    Filed: March 7, 2005
    Publication date: September 22, 2005
    Inventors: Jiong-Ping Lu, Duofeng Yue, Xiaozhan Liu, Donald Miles, Lance Robertson