Patents by Inventor Mahmoud A. Mousa

Mahmoud A. Mousa 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: 8815654
    Abstract: A Silicon on Insulator (SOI) Integrated Circuit (IC) chip with devices such as a vertical Silicon Controlled Rectifier (SCR), vertical bipolar transistors, a vertical capacitor, a resistor and/or a vertical pinch resistor and method of making the device(s). The devices are formed in a seed hole through the SOI surface layer and insulator layer to the substrate. A buried diffusion, e.g., N-type, is formed through the seed hole in the substrate. A doped epitaxial layer is formed on the buried diffusion and may include multiple doped layers, e.g., a P-type layer and an N-type layer. Polysilicon, e.g., P-type, may be formed on the doped epitaxial layer. Contacts to the buried diffusion are formed in a contact liner.
    Type: Grant
    Filed: June 14, 2007
    Date of Patent: August 26, 2014
    Assignee: International Business Machines Corporation
    Inventors: Robert J. Gauthier, Jr., Junjun Li, Souvick Mitra, Mahmoud A Mousa, Christopher S. Putnam
  • Patent number: 8390068
    Abstract: A silicon control rectifier and an electrostatic discharge protection device of an integrated circuit including the silicon control rectifier. The silicon control rectifier includes a silicon body formed in a silicon layer in direct physical contact with a buried oxide layer of a silicon-on-insulator substrate, a top surface of the silicon layer defining a horizontal plane; and an anode of the silicon control rectifier formed in a first region of the silicon body and a cathode of the silicon control rectifier formed in an opposite second region of the silicon body, wherein a path of current flow between the anode and the cathode is only in a single horizontal direction parallel to the horizontal plane.
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: March 5, 2013
    Assignee: International Business Machines Corporation
    Inventors: Robert J. Gauthier, Jr., Junjun Li, Souvick Mitra, Mahmoud A. Mousa, Christopher Stephen Putnam
  • Publication number: 20120119257
    Abstract: A silicon control rectifier and an electrostatic discharge protection device of an integrated circuit including the silicon control rectifier. The silicon control rectifier includes a silicon body formed in a silicon layer in direct physical contact with a buried oxide layer of a silicon-on-insulator substrate, a top surface of the silicon layer defining a horizontal plane; and an anode of the silicon control rectifier formed in a first region of the silicon body and a cathode of the silicon control rectifier formed in an opposite second region of the silicon body, wherein a path of current flow between the anode and the cathode is only in a single horizontal direction parallel to the horizontal plane.
    Type: Application
    Filed: January 30, 2012
    Publication date: May 17, 2012
    Applicant: International Business Machines Corporation
    Inventors: Robert J. Gauthier, JR., Junjun Li, Souvick Mitra, Mahmoud A. Mousa, Christopher Stephen Putnam
  • Patent number: 8138546
    Abstract: A silicon control rectifier and an electrostatic discharge protection device of an integrated circuit including the silicon control rectifier. The silicon control rectifier includes a silicon body formed in a silicon layer in direct physical contact with a buried oxide layer of a silicon-on-insulator substrate, a top surface of the silicon layer defining a horizontal plane; and an anode of the silicon control rectifier formed in a first region of the silicon body and a cathode of the silicon control rectifier formed in an opposite second region of the silicon body, wherein a path of current flow between the anode and the cathode is only in a single horizontal direction parallel to the horizontal plane.
    Type: Grant
    Filed: May 28, 2008
    Date of Patent: March 20, 2012
    Assignee: International Business Machines Corporation
    Inventors: Robert J. Gauthier, Jr., Junjun Li, Souvick Mitra, Mahmoud A. Mousa, Christopher Stephen Putnam
  • Patent number: 7863117
    Abstract: An apparatus and method for a multilayer silicon over insulator (SOI) device is provided. In the multilayer SOI device, the crystal orientation of at least one active region of a device is different than the active region of at least another device. Where the multilayer SOI device has a first layer including a PMOS device with a silicon active region having a crystal orientation of [100], the second layer may be an NMOS device with a active region having a silicon layer having a crystal orientation of [110]. The second layer is bonded to the first layer. The method and apparatus can be extended to more than two layers thus forming a multilayer SOI device having a different crystal orientation at each layer. The multiple layer SOI device may form circuits of reduced surface area.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: January 4, 2011
    Assignee: International Business Machines Corporation
    Inventors: Mahmoud A. Mousa, Christopher S. Putnam
  • Patent number: 7547917
    Abstract: An apparatus and method for an inverted multilayer silicon over insulator (SOI) device is provided. In the multilayer SOI device, the crystal orientation of at least one active region of a device may be different than the active region of at least another device. Where the multilayer SOI device has a first layer including a PMOS device with a silicon active region having a crystal orientation of [100], the second layer may be an NMOS device with an active region having a silicon layer having a crystal orientation of [110]. The second layer is bonded to the first layer. The method and apparatus can be extended to more than two layers thus forming a multilayer SOI device having a different crystal orientation at each layer. The multiple layer SOI device may form circuits of reduced surface area.
    Type: Grant
    Filed: April 6, 2005
    Date of Patent: June 16, 2009
    Assignee: International Business Machines Corporation
    Inventors: Robert J. Gauthier, Jr., Mahmoud A. Mousa, Christopher S. Putnam
  • Publication number: 20080308837
    Abstract: A Silicon on Insulator (SOI) Integrated Circuit (IC) chip with devices such as a vertical Silicon Controlled Rectifier (SCR), vertical bipolar transistors, a vertical capacitor, a resistor and/or a vertical pinch resistor and method of making the device(s). The devices are formed in a seed hole through the SOI surface layer and insulator layer to the substrate. A buried diffusion, e.g., N-type, is formed through the seed hole in the substrate. A doped epitaxial layer is formed on the buried diffusion and may include multiple doped layers, e.g., a P-type layer and an N-type layer. Polysilicon, e.g., P-type, may be formed on the doped epitaxial layer. Contacts to the buried diffusion are formed in a contact liner.
    Type: Application
    Filed: June 14, 2007
    Publication date: December 18, 2008
    Inventors: Robert J. Gauthier, JR., Junjun Li, Souvick Mitra, Mahmoud A. Mousa, Christopher S. Putnam
  • Patent number: 7457086
    Abstract: Method and device for protecting against electrostatic discharge. The method includes configuring a gate of at least one upper transistor of a transistor network connected between power rails to be biased to a prescribed value, and coupling an electrostatic discharge event to a gate of a lower transistor of the transistor network. The at least one upper and at least one lower transistors of the transistor network are respectively coupled between the power rails from a higher voltage to a lower voltage.
    Type: Grant
    Filed: December 21, 2006
    Date of Patent: November 25, 2008
    Assignee: International Business Machines Corporation
    Inventors: Kiran V. Chatty, Robert J. Gauthier, Jr., Mahmoud A. Mousa, Mujahid Muhammad, Christopher S. Putnam
  • Publication number: 20080224172
    Abstract: A silicon control rectifier and an electrostatic discharge protection device of an integrated circuit including the silicon control rectifier. The silicon control rectifier includes a silicon body formed in a silicon layer in direct physical contact with a buried oxide layer of a silicon-on-insulator substrate, a top surface of the silicon layer defining a horizontal plane; and an anode of the silicon control rectifier formed in a first region of the silicon body and a cathode of the silicon control rectifier formed in an opposite second region of the silicon body, wherein a path of current flow between the anode and the cathode is only in a single horizontal direction parallel to the horizontal plane.
    Type: Application
    Filed: May 28, 2008
    Publication date: September 18, 2008
    Inventors: Robert J. Gauthier, Junjun Li, Souvick Mitra, Mahmoud A. Mousa, Christopher Stephen Putnam
  • Patent number: 7399665
    Abstract: A silicon control rectifier, a method of making the silicon control rectifier and the use of the silicon control rectifier as an electrostatic discharge protection device of an integrated circuit. The silicon control rectifier includes a silicon body formed in a silicon layer in direct physical contact with a buried oxide layer of a silicon-on-insulator substrate, a top surface of the silicon layer defining a horizontal plane; and an anode of the silicon control rectifier formed in a first region of the silicon body and a cathode of the silicon control rectifier formed in an opposite second region of the silicon body, wherein a path of current flow between the anode and the cathode is only in a single horizontal direction parallel to the horizontal plane.
    Type: Grant
    Filed: July 23, 2007
    Date of Patent: July 15, 2008
    Assignee: International Business Machines Corporation
    Inventors: Robert J. Gauthier, Jr., Junjun Li, Souvick Mitra, Mahmoud A. Mousa, Christopher Stephen Putnam
  • Publication number: 20080145993
    Abstract: A silicon control rectifier, a method of making the silicon control rectifier and the use of the silicon control rectifier as an electrostatic discharge protection device of an integrated circuit. The silicon control rectifier includes a silicon body formed in a silicon layer in direct physical contact with a buried oxide layer of a silicon-on-insulator substrate, a top surface of the silicon layer defining a horizontal plane; and an anode of the silicon control rectifier formed in a first region of the silicon body and a cathode of the silicon control rectifier formed in an opposite second region of the silicon body, wherein a path of current flow between the anode and the cathode is only in a single horizontal direction parallel to the horizontal plane.
    Type: Application
    Filed: February 25, 2008
    Publication date: June 19, 2008
    Inventors: Robert J. Gauthier, Junjun Li, Souvick Mitra, Mahmoud A. Mousa, Christopher Stephen Putnam
  • Publication number: 20080108185
    Abstract: An apparatus and method for a multilayer silicon over insulator (SOI) device is provided. In the multilayer SOI device, the crystal orientation of at least one active region of a device is different than the active region of at least another device. Where the multilayer SOI device has a first layer including a PMOS device with a silicon active region having a crystal orientation of [100], the second layer may be an NMOS device with a active region having a silicon layer having a crystal orientation of [110]. The second layer is bonded to the first layer. The method and apparatus can be extended to more than two layers thus forming a multilayer SOI device having a different crystal orientation at each layer. The multiple layer SOI device may form circuits of reduced surface area.
    Type: Application
    Filed: December 20, 2007
    Publication date: May 8, 2008
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Mahmoud Mousa, Christopher Putnam
  • Patent number: 7348658
    Abstract: An apparatus and method for a multilayer silicon over insulator (SOI) device is provided. In the multilayer SOI device, the crystal orientation of at least one active region of a device is different than the active region of at least another device. Where the multilayer SOI device has a first layer including a PMOS device with a silicon active region having a crystal orientation of [100], the second layer may be an NMOS device with a active region having a silicon layer having a crystal orientation of [110]. The second layer is bonded to the first layer. The method and apparatus can be extended to more than two layers thus forming a multilayer SOI device having a different crystal orientation at each layer. The multiple layer SOI device may form circuits of reduced surface area.
    Type: Grant
    Filed: August 30, 2004
    Date of Patent: March 25, 2008
    Assignee: International Business Machines Corporation
    Inventors: Mahmoud A. Mousa, Christopher S. Putnam
  • Patent number: 7298008
    Abstract: Disclosed are a silicon control rectifier, a method of making the silicon control rectifier and the use of the silicon control rectifier as an electrostatic discharge protection device of an integrated circuit. The silicon control rectifier includes a silicon body formed in a silicon layer in direct physical contact with a buried oxide layer of a silicon-on-insulator substrate, a top surface of the silicon layer defining a horizontal plane; and an anode of the silicon control rectifier formed in a first region of the silicon body and a cathode of the silicon control rectifier formed in an opposite second region of the silicon body, wherein a path of current flow between the anode and the cathode is only in a single horizontal direction parallel to the horizontal plane.
    Type: Grant
    Filed: January 20, 2006
    Date of Patent: November 20, 2007
    Assignee: International Business Machines Corporation
    Inventors: Robert J. Gauthier, Jr., Junjun Li, Souvick Mitra, Mahmoud A. Mousa, Christopher Stephen Putnam
  • Publication number: 20070262345
    Abstract: A silicon control rectifier, a method of making the silicon control rectifier and the use of the silicon control rectifier as an electrostatic discharge protection device of an integrated circuit. The silicon control rectifier includes a silicon body formed in a silicon layer in direct physical contact with a buried oxide layer of a silicon-on-insulator substrate, a top surface of the silicon layer defining a horizontal plane; and an anode of the silicon control rectifier formed in a first region of the silicon body and a cathode of the silicon control rectifier formed in an opposite second region of the silicon body, wherein a path of current flow between the anode and the cathode is only in a single horizontal direction parallel to the horizontal plane.
    Type: Application
    Filed: July 23, 2007
    Publication date: November 15, 2007
    Inventors: Robert Gauthier, Junjun Li, Souvick Mitra, Mahmoud Mousa, Christopher Putnam
  • Publication number: 20070170512
    Abstract: Disclosed are a silicon control rectifier, a method of making the silicon control rectifier and the use of the silicon control rectifier as an electrostatic discharge protection device of an integrated circuit. The silicon control rectifier includes a silicon body formed in a silicon layer in direct physical contact with a buried oxide layer of a silicon-on-insulator substrate, a top surface of the silicon layer defining a horizontal plane; and an anode of the silicon control rectifier formed in a first region of the silicon body and a cathode of the silicon control rectifier formed in an opposite second region of the silicon body, wherein a path of current flow between the anode and the cathode is only in a single horizontal direction parallel to the horizontal plane.
    Type: Application
    Filed: January 20, 2006
    Publication date: July 26, 2007
    Inventors: Robert Gauthier, Jr., Junjun Li, Souvick Mitra, Mahmoud Mousa, Christopher Putnam
  • Publication number: 20070097570
    Abstract: Method and device for protecting against electrostatic discharge. The method includes configuring a gate of at least one upper transistor of a transistor network connected between power rails to be biased to a prescribed value, and coupling an electrostatic discharge event to a gate of a lower transistor of the transistor network. The at least one upper and at least one lower transistors of the transistor network are respectively coupled between the power rails from a higher voltage to a lower voltage.
    Type: Application
    Filed: December 21, 2006
    Publication date: May 3, 2007
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Kiran CHATTY, Robert GAUTHIER, Mahmoud MOUSA, Mujahid MUHAMMAD, Christopher PUTNAM
  • Patent number: 7203045
    Abstract: A structure and apparatus is provided for an electrostatic discharge power clamp, for use with high voltage power supplies. The power clamp includes a network of transistor devices, for example, nFETs arranged in series between a power rail and a ground rail. The first transistor device is biased into a partially on-state, and thus, neither device sees the full voltage potential between the power rail and the ground rail. Accordingly, the power clamp can function in voltage environments higher than the native voltage of the transistor devices. Additionally, the second transistor device is controlled by an RC network functioning as a trigger which allows the second transistor device to turn on during a voltage spike such as occurs during an ESD event. The capacitor of the RC network may be small thereby requiring small real estate on the integrated circuit. The clamp may have fast turn-on times as well as conducting current for long periods of time after turning on.
    Type: Grant
    Filed: October 1, 2004
    Date of Patent: April 10, 2007
    Assignee: International Business Machines Corporation
    Inventors: Kiran V. Chatty, Robert J. Gauthier, Jr., Mahmoud A. Mousa, Mujahid Muhammad, Christopher S. Putnam
  • Publication number: 20060226491
    Abstract: An apparatus and method for an inverted multilayer silicon over insulator (SOI) device is provided. In the multilayer SOI device, the crystal orientation of at least one active region of a device may be different than the active region of at least another device. Where the multilayer SOI device has a first layer including a PMOS device with a silicon active region having a crystal orientation of [100], the second layer may be an NMOS device with an active region having a silicon layer having a crystal orientation of [110]. The second layer is bonded to the first layer. The method and apparatus can be extended to more than two layers thus forming a multilayer SOI device having a different crystal orientation at each layer. The multiple layer SOI device may form circuits of reduced surface area.
    Type: Application
    Filed: April 6, 2005
    Publication date: October 12, 2006
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Robert Gauthier, Mahmoud Mousa, Christopher Putnam
  • Publication number: 20060072267
    Abstract: A structure and apparatus is provided for an electrostatic discharge power clamp, for use with high voltage power supplies. The power clamp includes a network of transistor devices, for example, nFETs arranged in series between a power rail and a ground rail. The first transistor device is biased into a partially on-state, and thus, neither device sees the full voltage potential between the power rail and the ground rail. Accordingly, the power clamp can function in voltage environments higher than the native voltage of the transistor devices. Additionally, the second transistor device is controlled by an RC network functioning as a trigger which allows the second transistor device to turn on during a voltage spike such as occurs during an ESD event. The capacitor of the RC network may be small thereby requiring small real estate on the integrated circuit. The clamp may have fast turn-on times as well as conducting current for long periods of time after turning on.
    Type: Application
    Filed: October 1, 2004
    Publication date: April 6, 2006
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Kiran Chatty, Robert Gauthier, Mahmoud Mousa, Mujahid Muhammad, Christopher Putnam