Patents by Inventor S. Ahmed

S. Ahmed 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: 7179692
    Abstract: A method of forming a semiconductor device includes forming a fin on an insulating layer, where the fin includes a number of side surfaces, a top surface and a bottom surface. The method also includes forming a gate on the insulating layer, where the gate has a substantially U-shaped cross-section at a channel region of the semiconductor device.
    Type: Grant
    Filed: August 9, 2004
    Date of Patent: February 20, 2007
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Bin Yu, Shibly S. Ahmed, Judy Xilin An, Srikanteswara Dakshina-Murthy, Zoran Krivokapic, Haihong Wang
  • Patent number: 7125776
    Abstract: A method of manufacturing a MOSFET type semiconductor device includes planarizing a gate material layer that is deposited over a channel. The planarization is performed in a multi-step process that includes an initial “rough” planarization and then a “fine” planarization. The slurry used for the finer planarization may include added material that tends to adhere to low areas of the gate material.
    Type: Grant
    Filed: January 7, 2005
    Date of Patent: October 24, 2006
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Krishnashree Achuthan, Shibly S. Ahmed, Haihong Wang, Bin Yu
  • Patent number: 7095065
    Abstract: A semiconductor device may include a substrate and an insulating layer formed on the substrate. A first device may be formed on the insulating layer, including a first fin. The first fin may be formed on the insulating layer and may have a first fin aspect ratio. A second device may be formed on the insulating layer, including a second fin. The second fin may be formed on the insulating layer and may have a second fin aspect ratio different from the first fin aspect ratio.
    Type: Grant
    Filed: August 5, 2003
    Date of Patent: August 22, 2006
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Bin Yu, Shibly S. Ahmed, Haihong Wang
  • Patent number: 7091068
    Abstract: A method of manufacturing a semiconductor device may include forming a fin structure on an insulator and depositing a gate material over the fin structure. The method may also include forming a sacrificial material over the gate material and planarizing the sacrificial material. An antireflective coating may be deposited on the planarized sacrificial material. A gate structure may then be formed by etching the gate material.
    Type: Grant
    Filed: December 6, 2002
    Date of Patent: August 15, 2006
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Shibly S. Ahmed, Cyrus E. Tabery, Bin Yu
  • Patent number: 7084018
    Abstract: A method of reducing buried oxide undercut during FinFET formation includes forming a fin on a buried oxide layer and forming a source region adjacent a first end of the fin and a drain region adjacent a second end of the fin. The method further includes forming a sacrificial oxide layer over the fin and source and drain regions and forming a gate over the fin, wherein the sacrificial oxide layer reduces undercutting of the buried oxide layer during gate formation.
    Type: Grant
    Filed: May 5, 2004
    Date of Patent: August 1, 2006
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Shibly S. Ahmed, Bin Yu
  • Patent number: 7041542
    Abstract: A method of forming a fin field effect transistor includes forming a fin and forming a source region adjacent a first end of the fin and a drain region adjacent a second end of the fin. The method further includes forming a dummy gate over the fin and forming a dielectric layer around the dummy gate. The method also includes removing the dummy gate to form a trench in the dielectric layer and forming a metal gate in the trench.
    Type: Grant
    Filed: January 12, 2004
    Date of Patent: May 9, 2006
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Shibly S. Ahmed, Haihong Wang, Bin Yu
  • Patent number: 7034361
    Abstract: A semiconductor device includes a fin, a source region formed adjacent the fin and having a height greater than that of the fin, and a drain region formed adjacent the a second side of the fin and having a height greater than that of the fin. A metal gate region is formed at a top surface and at least one side surface of the fin. A width of the source and drain region may be greater than that of the fin. The semiconductor device may exhibit a reduced series resistance and an improved transistor drive current.
    Type: Grant
    Filed: September 3, 2003
    Date of Patent: April 25, 2006
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Bin Yu, Shibly S. Ahmed, Haihong Wang
  • Publication number: 20060083295
    Abstract: A communication method comprising characterizing a communications channel, determining a data rate and optionally a power allocation strategy that maximizes channel throughput, and configuring a transmitter to send a transmit signal with said data rate and said optional power allocation strategy.
    Type: Application
    Filed: October 20, 2004
    Publication date: April 20, 2006
    Applicant: WM. Rice University
    Inventors: S. Ahmed, Richard Baraniuk
  • Patent number: 7029959
    Abstract: A method of manufacturing a semiconductor device may include forming a fin structure on an insulator and depositing a gate material over the fin structure. The method may also include depositing an organic anti-reflective coating on the gate material and forming a gate mask on the organic anti-reflective coating. The organic anti-reflective coating around the gate mask may be removed, and the gate material around the gate mask may be removed to define a gate.
    Type: Grant
    Filed: May 6, 2003
    Date of Patent: April 18, 2006
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Chih-Yuh Yang, Shibly S. Ahmed, Srikanteswara Dakshina-Murhty, Cyrus E. Tabery, Bin Yu
  • Patent number: 7029958
    Abstract: A method for forming a metal-oxide semiconductor field-effect transistor (MOSFET) includes patterning a fin area, a source region, and a drain region on a substrate, forming a fin in the fin area, and forming a mask in the fin area. The method further includes etching the mask to expose a channel area of the MOSFET, etching the fin to thin a width of the fin in the channel area, forming a gate over the fin, and forming contacts to the gate, the source region, and the drain region.
    Type: Grant
    Filed: November 4, 2003
    Date of Patent: April 18, 2006
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Cyrus E. Tabery, Shibly S. Ahmed, Matthew S. Buynoski, Srikanteswara Dakshina-Murthy, Zoran Krivokapic, Haihong Wang, Chih-Yuh Yang, Bin Yu
  • Patent number: 6998301
    Abstract: A method for forming a tri-gate semiconductor device that includes a substrate and a dielectric layer formed on the substrate includes depositing a first dielectric layer on the dielectric layer and etching the first dielectric layer to form a structure. The method further includes depositing a second dielectric layer over the structure, depositing an amorphous silicon layer over the second dielectric layer, etching the amorphous silicon layer to form amorphous silicon spacers, where the amorphous silicon spacers are disposed on opposite sides of the structure, depositing a metal layer on at least an upper surface of each of the amorphous silicon spacers, annealing the metal layer to convert the amorphous silicon spacers to crystalline silicon fin structures, removing a portion of the second dielectric layer, depositing a gate material, and etching the gate material to form three gates.
    Type: Grant
    Filed: September 3, 2003
    Date of Patent: February 14, 2006
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Bin Yu, Shibly S. Ahmed
  • Patent number: 6995438
    Abstract: A semiconductor device includes a substrate and an insulating layer formed on the substrate. A conductive fin may be formed on the insulating layer. Fully silicided source and drain regions may be formed adjacent to the fin. A metal gate may be formed over a portion of the fin via a damascene process.
    Type: Grant
    Filed: October 1, 2003
    Date of Patent: February 7, 2006
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Shibly S. Ahmed, Haihong Wang, Bin Yu
  • Patent number: 6982464
    Abstract: A FinFET-type semiconductor device includes a fin structure on which a relatively thin amorphous silicon layer and then an undoped polysilicon layer is formed. The semiconductor device may be planarized using a chemical mechanical polishing (CMP) in which the amorphous silicon layer acts as a stop layer to prevent damage to the fin structure.
    Type: Grant
    Filed: October 29, 2004
    Date of Patent: January 3, 2006
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Krishnashree Achuthan, Shibly S. Ahmed, Haihong Wang, Bin Yu
  • Patent number: 6974983
    Abstract: A semiconductor device includes an N-channel device and a P-channel device. The N-channel device includes a first source region, a first drain region, a first fin structure, and a gate. The P-channel device includes a second source region, a second drain region, a second fin structure, and the gate. The second source region, the second drain region, and the second fin structure are separated from the first source region, the first drain region, and the first fin structure by a channel stop layer.
    Type: Grant
    Filed: February 2, 2004
    Date of Patent: December 13, 2005
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Wiley Eugene Hill, Shibly S. Ahmed, Haihong Wang, Bin Yu
  • Patent number: 6967175
    Abstract: A method of manufacturing a semiconductor device may include forming a fin on an insulator and forming a gate oxide on sides of the fin. The method may also include forming a gate structure over the fin and the gate oxide and forming a dielectric layer adjacent the gate structure. Material in the gate structure may be removed to define a gate recess. A width of a portion of the fin below the gate recess may be reduced, and a metal gate may be formed in the gate recess.
    Type: Grant
    Filed: December 4, 2003
    Date of Patent: November 22, 2005
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Shibly S. Ahmed, Haihong Wang, Bin Yu
  • Patent number: 6960804
    Abstract: A double-semiconductor device includes a substrate, an insulating layer, a fin and a gate. The insulating layer is formed on the substrate and the fin is formed on the insulating layer. The fin has a number of side surfaces, a top surface and a bottom surface. The gate is formed on the insulating layer and surrounds the top surface, bottom surface and the side surfaces of the fin in the channel region of the semiconductor device. Surrounding the fin with gate material results in an increased total channel width and more flexible device adjustment margins.
    Type: Grant
    Filed: October 10, 2003
    Date of Patent: November 1, 2005
    Assignee: Hussman Corporation
    Inventors: Chih-Yuh Yang, Shibly S. Ahmed, Judy Xilin An, Srikanteswara Dakshina-Murthy, Bin Yu
  • Patent number: 6958512
    Abstract: A non-volatile memory device includes a substrate, an insulating layer, a fin, a conductive structure and a control gate. The insulating layer may be formed on the substrate and the fin may be formed on the insulating layer. The conductive structure may be formed near a side of the fin and the control gate may be formed over the fin. The conductive structure may act as a floating gate electrode for the non-volatile memory device.
    Type: Grant
    Filed: February 3, 2004
    Date of Patent: October 25, 2005
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Yider Wu, Shibly S. Ahmed, Haihong Wang, Bin Yu
  • Patent number: 6936882
    Abstract: A semiconductor device includes a substrate and an insulating layer formed on the substrate. A first device may be formed on the insulating layer. The first device may include a first fin formed on the insulating layer, a first dielectric layer formed on the first fin, and a partially silicided gate formed over a portion of the first fin and the first dielectric layer. A second device also may be formed on the insulating layer. The second device may include a second fin formed on the insulating layer, a second dielectric layer formed on the second fin, and a fully silicided gate formed over a portion of the second fin and the second dielectric layer.
    Type: Grant
    Filed: July 8, 2003
    Date of Patent: August 30, 2005
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Shibly S. Ahmed, Haihong Wang, Bin Yu
  • Publication number: 20050180860
    Abstract: A compressor of the present invention includes a drive shaft extending along a longitudinal axis, a swash plate assembly operatively connected to and driven by the drive shaft, a retainer ring for disposition about the drive shaft. The drive shaft has first and second annular grooves therein and spaced longitudinally from one another and a conical ramp extending out of the first annular groove toward the second annular groove for facilitating movement of the retainer ring out of the first annular groove and along the drive shaft to the second annular groove. The swash plate assembly includes a journal member connected to a drive hub further connected to the drive shaft and is rotated thereby with the drive shaft around the longitudinal axis to form the inclination angle of a swash plate thereby controlling displacement of the swash plate assembly.
    Type: Application
    Filed: February 17, 2004
    Publication date: August 18, 2005
    Inventors: Bradley Dewispelaere, Raymond Murray, S. Ahmed, Roy Plew
  • Patent number: 6914277
    Abstract: A semiconductor device includes an N-channel device and a P-channel device. The N-channel device includes a first source region, a first drain region, a first fin structure, and a gate. The P-channel device includes a second source region, a second drain region, a second fin structure, and the gate. The second source region, the second drain region, and the second fin structure are separated from the first source region, the first drain region, and the first fin structure by an insulating layer.
    Type: Grant
    Filed: October 1, 2003
    Date of Patent: July 5, 2005
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Wiley Eugene Hill, Shibly S. Ahmed, Haihong Wang, Bin Yu