Patents by Inventor Gamal Refai-Ahmed

Gamal Refai-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).

  • Publication number: 20120278029
    Abstract: Embodiments of systems and methods for improved measurement of transient thermal responses in electronic systems are described herein. Embodiments of the disclosure use the known thermal transfer function of an electronic system to generate an equivalent resistor-capacitor (RC) network having a dynamic response that is identical to a given power excitation as the actual electronic system would have to that power excitation. Using the analogy between thermal and electrical systems, a Foster RC network is constructed, comprising a plurality of RC stages in which resistors and capacitors are connected in parallel. Subsequently, the analog thermal RC network is converted into an infinite impulse response (IIR) digital filter, whose coefficients can be obtained the Z-transform of the analog thermal RC network. This IIR digital filter establishes the recursive relationship between temperature output at the current time step and measured power input at the previous time step.
    Type: Application
    Filed: April 27, 2011
    Publication date: November 1, 2012
    Inventors: Maxat Touzelbaev, Yizhang Yang, Gamal Refai-Ahmed
  • Publication number: 20120205791
    Abstract: A method of manufacturing includes connecting a first end of a first through-silicon-via to a first die seal proximate a first side of a first semiconductor chip. A second end of the first thu-silicon-via is connected to a second die seal proximate a second side of the first semiconductor chip opposite the first side.
    Type: Application
    Filed: April 26, 2012
    Publication date: August 16, 2012
    Inventors: Michael Z. Su, Gamal Refai-Ahmed, Bryan Black
  • Patent number: 8193039
    Abstract: A method of manufacturing includes connecting a first end of a first through-silicon-via to a first die seal proximate a first side of a first semiconductor chip. A second end of the first thu-silicon-via is connected to a second die seal proximate a second side of the first semiconductor chip opposite the first side.
    Type: Grant
    Filed: September 24, 2010
    Date of Patent: June 5, 2012
    Assignees: Advanced Micro Devices, Inc., ATI Technologies ULC
    Inventors: Michael Z. Su, Gamal Refai-Ahmed, Bryan Black
  • Publication number: 20120098119
    Abstract: A method of manufacturing is provided that includes providing a semiconductor chip device that has a circuit board and a first semiconductor chip coupled thereto. A lid is placed on the circuit board. The lid includes an opening and an internal cavity. A liquid thermal interface material is placed in the internal cavity for thermal contact with the first semiconductor chip and the circuit board.
    Type: Application
    Filed: October 22, 2010
    Publication date: April 26, 2012
    Inventors: Gamal Refai-Ahmed, Michael Z. Su, Bryan Black
  • Publication number: 20120074579
    Abstract: A method of manufacturing includes connecting a first end of a first through-silicon-via to a first die seal proximate a first side of a first semiconductor chip. A second end of the first thu-silicon-via is connected to a second die seal proximate a second side of the first semiconductor chip opposite the first side.
    Type: Application
    Filed: September 24, 2010
    Publication date: March 29, 2012
    Inventors: Michael Z. Su, Gamal Refai-Ahmed, Bryan Black
  • Publication number: 20120075807
    Abstract: A method of manufacturing is provided that includes placing a thermal management device in thermal contact with a first semiconductor chip of a semiconductor chip device. The semiconductor chip device includes a first substrate coupled to the first semiconductor chip. The first substrate has a first aperture. At least one of the first semiconductor chip and the thermal management device is at least partially positioned in the first aperture.
    Type: Application
    Filed: September 24, 2010
    Publication date: March 29, 2012
    Inventors: Gamal Refai-Ahmed, Bryan Black, Michael Z. Su
  • Publication number: 20120061852
    Abstract: A method of manufacturing is provided that includes providing a semiconductor chip with an insulating layer. The insulating layer includes a trench. A second semiconductor chip is stacked on the first semiconductor chip to leave a gap. A polymeric filler is placed in the gap wherein a portion of the polymeric filler is drawn into the trench.
    Type: Application
    Filed: September 9, 2010
    Publication date: March 15, 2012
    Inventors: Michael Z. Su, Gamal Refai-Ahmed, Bryan Black
  • Publication number: 20120061821
    Abstract: A semiconductor chip with conductive vias and a method of manufacturing the same are disclosed. The method includes forming a first plurality of conductive vias in a layer of a first semiconductor chip. The first plurality of conductive vias includes first ends and second ends. A first conductor pad is formed in ohmic contact with the first ends of the first plurality of conductive vias.
    Type: Application
    Filed: September 9, 2010
    Publication date: March 15, 2012
    Inventors: Bryan Black, Michael Z. Su, Gamal Refai-Ahmed, Joe Siegel, Seth Prejean
  • Publication number: 20120061853
    Abstract: A method of manufacturing is provided that includes placing a removable cover on a surface of a substrate. The substrate includes a first semiconductor chip positioned on the surface. The first semiconductor chip includes a first sidewall. The removable cover includes a second sidewall positioned opposite the first sidewall. A first underfill is placed between the first semiconductor chip and the surface wherein the second sidewall provides a barrier to flow of the first underfill. Various apparatus are also disclosed.
    Type: Application
    Filed: September 9, 2010
    Publication date: March 15, 2012
    Inventors: Michael Z. Su, Lei Fu, Gamal Refai-Ahmed Refai-Ahmed, Bryan Black
  • Publication number: 20120043668
    Abstract: A method of assembling a semiconductor chip device is provided that includes placing an interposer on a first semiconductor chip. The interposer includes a first surface seated on the first semiconductor chip and a second surface adapted to thermally contact a heat spreader. The second surface includes a first aperture. A second semiconductor chip is placed in the first aperture.
    Type: Application
    Filed: August 20, 2010
    Publication date: February 23, 2012
    Inventors: Gamal Refai-Ahmed, Michael Z. Su, Bryan Black, Maxat Touzelbaev, Yizhang Yang
  • Publication number: 20120043539
    Abstract: A method of manufacturing is provided that includes applying a thermal interface tape to a side of a semiconductor wafer that includes at least one semiconductor chip. The thermal interface material tape is positioned on the at least one semiconductor chip. The at least one semiconductor chip is singulated from the semiconductor wafer with at least a portion of the thermal interface tape still attached to the semiconductor chip.
    Type: Application
    Filed: August 20, 2010
    Publication date: February 23, 2012
    Inventors: Seth Prejean, Dales Kent, Ronnie Brandon, Gamal Refai-Ahmed, Michael Z. Su, Michael Bienek, Joseph Siegel, Bryan Black
  • Publication number: 20120043669
    Abstract: A method of assembling a semiconductor chip device is provided that includes providing a circuit board including a surface with an aperture. A portion of a first heat spreader is positioned in the aperture. A stack is positioned on the first heat spreader. The stack includes a first semiconductor chip positioned on the first heat spreader and a substrate that has a first side coupled to the first semiconductor chip.
    Type: Application
    Filed: August 20, 2010
    Publication date: February 23, 2012
    Inventors: Gamal Refai-Ahmed, Michael Z. Su, Bryan Black
  • Publication number: 20110304051
    Abstract: Various semiconductor chip thermal interface material methods and apparatus are disclosed. In one aspect, a method of establishing thermal contact between a first semiconductor chip and a heat spreader is provided. The method includes placing a thermal interface material layer containing a support structure on the first semiconductor chip. The heat spreader is positioned proximate the thermal interface material layer. The thermal interface material layer is reflowed to establish thermal contact with both the first semiconductor chip and the heat spreader.
    Type: Application
    Filed: August 23, 2011
    Publication date: December 15, 2011
    Inventors: Maxat Touzelbaev, Gamal Refai-Ahmed, Yizhang Yang, Bryan Black
  • Patent number: 8058724
    Abstract: Various semiconductor chip thermal management systems and methods are disclosed. In one aspect, a method of manufacturing is provided that includes coupling a semiconductor chip to a substrate and coupling a diamond heat spreader that has a thermoelectric cooler to the semiconductor chip. A vapor chamber is coupled to the diamond heat spreader.
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: November 15, 2011
    Assignee: ATI Technologies ULC
    Inventor: Gamal Refai-Ahmed
  • Patent number: 8034662
    Abstract: Various semiconductor chip thermal interface material methods and apparatus are disclosed. In one aspect, a method of establishing thermal contact between a first semiconductor chip and a heat spreader is provided. The method includes placing a thermal interface material layer containing a support structure on the first semiconductor chip. The heat spreader is positioned proximate the thermal interface material layer. The thermal interface material layer is reflowed to establish thermal contact with both the first semiconductor chip and the heat spreader.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: October 11, 2011
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Maxat Touzelbaev, Gamal Refai-Ahmed, Yizhang Yang, Bryan Black
  • Publication number: 20110245981
    Abstract: Various computing center control and cooling apparatus and methods are disclosed. In one aspect, a method of controlling plural processors of a computing system is provided. The method includes monitoring activity levels of the plural processors over a time interval to determine plural activity level scores. The plural activity level scores are compared with predetermined processor activity level scores corresponding to preselected processor operating modes to determine a recommended operating mode for each of the plural processors. Each of the plural processors is instructed to operate in one of the recommended operating modes.
    Type: Application
    Filed: April 6, 2010
    Publication date: October 6, 2011
    Inventors: Gamal Refai-Ahmed, Stanley Ossias, Maxat Touzelbaev
  • Patent number: 7974096
    Abstract: The present disclosure relates to heat transfer thermal management device utilizing varied methods of heat transfer to cool a heat generating component from a circuit assembly or any other embodiment where a heat generating component can be functionally and operatively coupled. In a proposed embodiment, at least one heat pipe is used to transfer heat from the condensation portion of a vapor chamber to cool a bottom portion of a finned heat dissipation space and transfer the heat to a colder location on the heat fins. In another proposed embodiment, the water vapor chamber is placed in a heat sink and is adapted to thermally connect to at least one heat pipe.
    Type: Grant
    Filed: August 17, 2006
    Date of Patent: July 5, 2011
    Assignee: ATI Technologies ULC
    Inventor: Gamal Refai-Ahmed
  • Patent number: 7964951
    Abstract: A semiconductor device includes first and second stacked semiconductor dies on a substrate. A lid having a plurality of fins extending downwardly into the cavity is mounted on the substrate to encapsulate the semiconductor dies. At least some of the fins are longer than other ones of said fins. The lid is attached to the substrate, with the longer fins extending downwardly above a region of the substrate not occupied by the first die. The shorter fins extend downwardly above a region of said first die not covered by said second die. A thermal interface material fills the remainder of the cavity and is in thermal communication with both dies, the substrate and the fins. The lid may be molded from metal. The lid may be bonded to the topmost die, using a thermal bonding material that may be liquid metal, or the like.
    Type: Grant
    Filed: March 16, 2009
    Date of Patent: June 21, 2011
    Assignee: ATI Technologies ULC
    Inventor: Gamal Refai-Ahmed
  • Patent number: 7965511
    Abstract: The present disclosure relates to heat transfer thermal management device utilizing varied methods of heat transfer to cool a heat generating component from a circuit assembly or any other embodiment where a heat generating component can be functionally and operatively coupled. In an embodiment, the vapor configuration is modified to include fins that define a cross-flow heat exchanger where the vapor from the vapor chamber serves as the fluid in the vertical cross-flow in the heat exchanger and natural or forced cooling air serves as the horizontal cross-flow for the heat exchanger.
    Type: Grant
    Filed: August 17, 2006
    Date of Patent: June 21, 2011
    Assignee: ATI Technologies ULC
    Inventor: Gamal Refai-Ahmed
  • Patent number: 7911791
    Abstract: Various heat sinks, method of use and manufacture thereof are disclosed. In one aspect, a method of providing thermal management for a circuit device is provided. The method includes placing a heat sink in thermal contact with the circuit device wherein the heat sink includes a base member in thermal contact with the circuit device, a first shell coupled to the base member that includes a first inclined internal surface, a lower end and first plurality of orifices at the lower end to enable a fluid to transit the first shell, and at least one additional shell coupled to the base member and nested within the first shell. The at least one additional shell includes a second inclined internal surface and a second plurality of orifices to enable the fluid to transit the at least one additional shell. The fluid is moved through the first shell and the at least one additional shell.
    Type: Grant
    Filed: June 24, 2009
    Date of Patent: March 22, 2011
    Assignee: ATI Technologies ULC
    Inventors: Gamal Refai-Ahmed, Maxat Touzelbaev