Patents by Inventor Haifeng Sheng

Haifeng Sheng 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: 9147654
    Abstract: An integrated circuit system that includes: providing a substrate including front-end-of-line circuitry; forming a first conductive level including a first conductive trace over the substrate; forming a second conductive level spaced apart from the first conductive level and including a second conductive trace; and connecting the first conductive level to a third conductive level with a viabar that passes through the second conductive level without contacting the second conductive trace.
    Type: Grant
    Filed: July 7, 2008
    Date of Patent: September 29, 2015
    Assignee: GLOBALFOUNDRIES Singapore Pte. Ltd.
    Inventors: Haifeng Sheng, Fan Zhang, Juan Boon Tan, Bei Chao Zhang, Dong Kyun Sohn
  • Patent number: 8519445
    Abstract: The present invention provides a method of inducing stress in a semiconductor device substrate by applying an ion implantation to a gate region before a source/drain annealing process. The source/drain region may then be annealed along with the gate which will cause the gate to expand in certain areas due to said ion implantation. As a result, stress caused by said expansion of the gate is transferred to the channel region in the semiconductor substrate.
    Type: Grant
    Filed: July 14, 2011
    Date of Patent: August 27, 2013
    Assignee: GlobalFoundries Singapore Pte. Ltd.
    Inventors: Vincent Ho, Wenhe Lin, Young Way Teh, Yong Kong Siew, Bei Chao Zhang, Fan Zhang, Haifeng Sheng, Juan Boon Tan
  • Patent number: 8183149
    Abstract: A method of fabricating a semiconductor device is provided. The method begins by providing a semiconductor device structure having electronic devices formed on a semiconductor substrate, and having an upper metal layer associated with electrical contacts for the electronic devices. The method continues by forming a diffusion barrier layer overlying the upper metal layer. Next, the method deposits a first layer of graded ultra-low-k (ULK) material overlying the diffusion barrier layer, a layer of ULK material overlying the first layer of graded ULK material, and a second layer of graded ULK material overlying the layer of ULK material. The method continues by depositing a layer of low temperature oxide material overlying the second layer of graded ULK material, and forming a layer of metal hard mask material overlying the layer of low temperature oxide material.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: May 22, 2012
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: David M. Permana, Ravi P. Srivastava, Haifeng Sheng, Dimitri R. Kioussis
  • Publication number: 20110266628
    Abstract: The present invention provides a method of inducing stress in a semiconductor device substrate by applying an ion implantation to a gate region before a source/drain annealing process. The source/drain region may then be annealed along with the gate which will cause the gate to expand in certain areas due to said ion implantation. As a result, stress caused by said expansion of the gate is transferred to the channel region in the semiconductor substrate.
    Type: Application
    Filed: July 14, 2011
    Publication date: November 3, 2011
    Applicant: GLOBALFOUNDRIES SINGAPORE PTE. LTD.
    Inventors: Vincent HO, Wenhe LIN, Young Way TEH, Yong Kong SIEW, Bei Chao ZHANG, Fan ZHANG, Haifeng SHENG, Juan Boon TAN
  • Patent number: 7993997
    Abstract: The present invention provides a method of inducing stress in a semiconductor device substrate by applying an ion implantation to a gate region before a source/drain annealing process. The source/drain region may then be annealed along with the gate which will cause the gate to expand in certain areas due to said ion implantation. As a result, stress caused by said expansion of the gate is transferred to the channel region in the semiconductor substrate.
    Type: Grant
    Filed: October 1, 2007
    Date of Patent: August 9, 2011
    Assignee: Globalfoundries Singapore Pte. Ltd.
    Inventors: Vincent Ho, Wenhe Lin, Young Way Teh, Yong Kong Siew, Bei Chao Zhang, Fan Zhang, Haifeng Sheng, Juan Boon Tan
  • Publication number: 20100001370
    Abstract: An integrated circuit system that includes: providing a substrate including front-end-of-line circuitry; forming a first conductive level including a first conductive trace over the substrate; forming a second conductive level spaced apart from the first conductive level and including a second conductive trace; and connecting the first conductive level to a third conductive level with a viabar that passes through the second conductive level without contacting the second conductive trace.
    Type: Application
    Filed: July 7, 2008
    Publication date: January 7, 2010
    Applicant: CHARTERED SEMICONDUCTOR MANUFACTURING LTD.
    Inventors: Haifeng Sheng, Fan Zhang, Juan Boon Tan, Bei Chao Zhang, Dong Kyun Sohn
  • Publication number: 20090315115
    Abstract: A method (and semiconductor device) of fabricating a semiconductor device provides a shallow trench isolation (STI) structure or region by implanting ions in the STI region. After implantation, the region (of substrate material and ions of a different element) is thermally annealed producing a dielectric material operable for isolating two adjacent field-effect transistors (FET). This eliminates the conventional steps of removing substrate material to form the trench and refilling the trench with dielectric material. Implantation of nitrogen ions into an STI region adjacent a p-type FET applies a compressive stress to the transistor channel region to enhance transistor performance. Implantation of oxygen ions into an STI region adjacent an n-type FET applies a tensile stress to the transistor channel region to enhance transistor performance.
    Type: Application
    Filed: June 23, 2008
    Publication date: December 24, 2009
    Applicant: Chartered Semiconductor Manufacturing, Ltd.
    Inventors: Beichao Zhang, Johnny Widodo, Juan Boon Tan, Yong Kong Siew, Fan Zhang, Haifeng Sheng, Wenhe Lin, Young Way Teh, Jinping Liu, Vincent Ho, Liang Choo Hsia
  • Publication number: 20090085122
    Abstract: The present invention provides a method of inducing stress in a semiconductor device substrate by applying an ion implantation to a gate region before a source/drain annealing process. The source/drain region may then be annealed along with the gate which will cause the gate to expand in certain areas due to said ion implantation. As a result, stress caused by said expansion of the gate is transferred to the channel region in the semiconductor substrate.
    Type: Application
    Filed: October 1, 2007
    Publication date: April 2, 2009
    Inventors: Vincent Ho, Wenhe Lin, Young Way Teh, Yong Kong Siew, Bei Chao Zhang, Fan Zhang, Haifeng Sheng, Juan Boon Tan
  • Patent number: 7400030
    Abstract: In the present invention, there is provided semiconductor devices such as a Schottky UV photodetector fabricated on n-type ZnO and MgxZn1-xO epitaxial films. The ZnO and MgxZn1-xO films are grown on R-plane sapphire substrates and the Schottky diodes are fabricated on the ZnO and MgxZn1-xO films using silver and aluminum as Schottky and ohmic contact metals, respectively. The Schottky diodes have circular patterns, where the inner circle is the Schottky contact, and the outside ring is the ohmic contact. Ag Schottky contact patterns are fabricated using standard liftoff techniques, while the Al ohmic contact patterns are formed using wet chemical etching. These detectors show low frequency photoresponsivity, high speed photoresponse, lower leakage current and low noise performance as compared to their photoconductive counterparts. This invention is also applicable to optical modulators, Metal Semiconductor Field Effect Transistors (MESFETs) and more.
    Type: Grant
    Filed: January 25, 2005
    Date of Patent: July 15, 2008
    Assignee: Rutgers, the State University of New Jersey
    Inventors: Yicheng Lu, Haifeng Sheng, Sriram Muthukumar, Nuri William Emanetoglu, Jian Zhong, Shaohua Liang
  • Publication number: 20050145970
    Abstract: In the present invention, there is provided semiconductor devices such as a Schottky UV photodetector fabricated on n-type ZnO and MgxZn1-xO epitaxial films. The ZnO and MgxZn1-xO films are grown on R-plane sapphire substrates and the Schottky diodes are fabricated on the ZnO and MgxZn1-xO films using silver and aluminum as Schottky and ohmic contact metals, respectively. The Schottky diodes have circular patterns, where the inner circle is the Schottky contact, and the outside ring is the ohmic contact. Ag Schottky contact patterns are fabricated using standard liftoff techniques, while the Al ohmic contact patterns are formed using wet chemical etching. These detectors show low frequency photoresponsivity, high speed photoresponse, lower leakage current and low noise performance as compared to their photoconductive counterparts. This invention is also applicable to optical modulators, Metal Semiconductor Field Effect Transistors (MESFETs) and more.
    Type: Application
    Filed: January 25, 2005
    Publication date: July 7, 2005
    Inventors: Yicheng Lu, Haifeng Sheng, Sriram Muthukumar, Nuri Emanetoglu, Jian Zhong, Shaohua Liang
  • Patent number: 6846731
    Abstract: In the present invention, there is provided semiconductor devices such as a Schottky UV photodetector fabricated on n-type ZnO and MgxZn1-xO epitaxial films. The ZnO and MgxZn1-xO films are grown on R-plane sapphire substrates and the Schottky diodes are fabricated on the ZnO and MgxZn1-xO films using silver and aluminum as Schottky and ohmic contact metals, respectively. The Schottky diodes have circular patterns, where the inner circle is the Schottky contact, and the outside ring is the ohmic contact. Ag Schottky contact patterns are fabricated using standard liftoff techniques, while the Al ohmic contact patterns are formed using wet chemical etching. These detectors show low frequency photoresponsivity, high speed photoresponse, lower leakage current and low noise performance as compared to their photoconductive counterparts. This invention is also applicable to optical modulators, Metal Semiconductor Field Effect Transistors (MESFETs) and more.
    Type: Grant
    Filed: May 30, 2002
    Date of Patent: January 25, 2005
    Assignee: Rutgers, The State University of New Jersey
    Inventors: Yicheng Lu, Haifeng Sheng, Sriram Muthukumar, Nuri William Emanetoglu, Jian Zhong
  • Publication number: 20030129813
    Abstract: In the present invention, there is provided semiconductor devices such as a Schottky UV photodetector fabricated on n-type ZnO and MgxZn1-xO epitaxial films. The ZnO and MgxZn1-xO films are grown on R-plane sapphire substrates and the Schottky diodes are fabricated on the ZnO and MgxZn1-xO films using silver and aluminum as Schottky and ohmic contact metals, respectively. The Schottky diodes have circular patterns, where the inner circle is the Schottky contact, and the outside ring is the ohmic contact. Ag Schottky contact patterns are fabricated using standard liftoff techniques, while the Al ohmic contact patterns are formed using wet chemical etching. These detectors show low frequency photoresponsivity, high speed photoresponse, lower leakage current and low noise performance as compared to their photoconductive counterparts. This invention is also applicable to optical modulators, Metal Semiconductor Field Effect Transistors (MESFETs) and more.
    Type: Application
    Filed: May 30, 2002
    Publication date: July 10, 2003
    Applicant: Rutgers, The State University Of New Jersey
    Inventors: Yicheng Lu, Haifeng Sheng, Sriram Muthukumar, Nuri William Emanetoglu, Jian Zhong