Patents by Inventor Naigang Wang

Naigang Wang 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: 9318957
    Abstract: A method is disclosed to operate a voltage conversion circuit such as a buck regulator circuit that has a plurality of switches coupled to a voltage source; a slab inductor having a length, a width and a thickness, where the slab inductor is coupled between the plurality of switches and a load and carries a load current during operation of the plurality of switches; and a means to reduce or cancel the detrimental effect of other wires on same chip, such as a power grid, potentially conducting return current and thereby degrading the functionality of this slab inductor. In one embodiment the wires can be moved further away from the slab inductor and in another embodiment magnetic materials can be used to shield the slab inductor from at least one such interfering conductor.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: April 19, 2016
    Assignee: International Business Machines Corporation
    Inventors: Leland Chang, David Goren, Naigang Wang
  • Publication number: 20160087533
    Abstract: A method is disclosed to operate a voltage conversion circuit such as a buck regulator circuit that has a plurality of switches coupled to a voltage source; a slab inductor having a length, a width and a thickness, where the slab inductor is coupled between the plurality of switches and a load and carries a load current during operation of the plurality of switches; and a means to reduce or cancel the detrimental effect of other wires on same chip, such as a power grid, potentially conducting return current and thereby degrading the functionality of this slab inductor. In one embodiment the wires can be moved further away from the slab inductor and in another embodiment magnetic materials can be used to shield the slab inductor from at least one such interfering conductor.
    Type: Application
    Filed: December 3, 2015
    Publication date: March 24, 2016
    Inventors: Leland Chang, David Goren, Naigang Wang
  • Patent number: 9287780
    Abstract: A method is disclosed to operate a voltage conversion circuit such as a buck regulator circuit that has a plurality of switches coupled to a voltage source; a slab inductor having a length, a width and a thickness, where the slab inductor is coupled between the plurality of switches and a load and carries a load current during operation of the plurality of switches; and a means to reduce or cancel the detrimental effect of other wires on same chip, such as a power grid, potentially conducting return current and thereby degrading the functionality of this slab inductor. In one embodiment the wires can be moved further away from the slab inductor and in another embodiment magnetic materials can be used to shield the slab inductor from at least one such interfering conductor.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: March 15, 2016
    Assignee: International Business Machines Corporation
    Inventors: Leland Chang, David Goren, Naigang Wang
  • Patent number: 9193584
    Abstract: A micro-electromechanical device and method of manufacture are disclosed. A sacrificial layer is formed on a silicon substrate. A metal layer is formed on a top surface of the sacrificial layer. Soft magnetic material is electrolessly deposited on the metal layer to manufacture the micro-electromechanical device. The sacrificial layer is removed to produce a metal beam separated from the silicon substrate by a space.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: November 24, 2015
    Assignee: International Business Machines Corporation
    Inventors: William J. Gallagher, Eugene J. O'Sullivan, Naigang Wang
  • Publication number: 20150303809
    Abstract: A method is disclosed to operate a voltage conversion circuit such as a buck regulator circuit that has a plurality of switches coupled to a voltage source; a slab inductor having a length, a width and a thickness, where the slab inductor is coupled between the plurality of switches and a load and carries a load current during operation of the plurality of switches; and a means to reduce or cancel the detrimental effect of other wires on same chip, such as a power grid, potentially conducting return current and thereby degrading the functionality of this slab inductor. In one embodiment the wires can be moved further away from the slab inductor and in another embodiment magnetic materials can be used to shield the slab inductor from at least one such interfering conductor.
    Type: Application
    Filed: June 29, 2015
    Publication date: October 22, 2015
    Inventors: Leland Chang, David Goren, Naigang Wang
  • Publication number: 20150303810
    Abstract: A method is disclosed to operate a voltage conversion circuit such as a buck regulator circuit that has a plurality of switches coupled to a voltage source; a slab inductor having a length, a width and a thickness, where the slab inductor is coupled between the plurality of switches and a load and carries a load current during operation of the plurality of switches; and a means to reduce or cancel the detrimental effect of other wires on same chip, such as a power grid, potentially conducting return current and thereby degrading the functionality of this slab inductor. In one embodiment the wires can be moved further away from the slab inductor and in another embodiment magnetic materials can be used to shield the slab inductor from at least one such interfering conductor.
    Type: Application
    Filed: June 29, 2015
    Publication date: October 22, 2015
    Inventors: Leland Chang, David Goren, Naigang Wang
  • Patent number: 9159778
    Abstract: A mechanism is provided for integrating an inductor into a semiconductor. A circular or other closed loop trench is formed in a substrate with sidewalls connected by a bottom surface in the substrate. A first insulator layer is deposited on the sidewalls of the trench so as to coat the sidewalls and the bottom surface. A conductor layer is deposited on the sidewalls and the bottom surface of the trench so as to coat the first insulator layer in the trench such that the conductor layer is on top of the first insulator layer in the trench. A first magnetic layer is deposited on the sidewalls and bottom surface of the trench so as to coat the first insulator layer in the trench without filling the trench. The first magnetic layer deposited on the sidewalls forms an inner closed magnetic loop and an outer closed magnetic loop within the trench.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: October 13, 2015
    Assignee: International Business Machines Corporation
    Inventors: Naigang Wang, Bucknell C. Webb
  • Publication number: 20150287772
    Abstract: A mechanism is provided for integrating an inductor into a semiconductor. A circular or other closed loop trench is formed in a substrate with sidewalls connected by a bottom surface in the substrate. A first insulator layer is deposited on the sidewalls of the trench so as to coat the sidewalls and the bottom surface. A conductor layer is deposited on the sidewalls and the bottom surface of the trench so as to coat the first insulator layer in the trench such that the conductor layer is on top of the first insulator layer in the trench. A first magnetic layer is deposited on the sidewalls and bottom surface of the trench so as to coat the first insulator layer in the trench without filling the trench. The first magnetic layer deposited on the sidewalls forms an inner closed magnetic loop and an outer closed magnetic loop within the trench.
    Type: Application
    Filed: June 22, 2015
    Publication date: October 8, 2015
    Inventors: Naigang Wang, Bucknell C. Webb
  • Publication number: 20150287773
    Abstract: A mechanism is provided for integrating an inductor into a semiconductor. A circular or other closed loop trench is formed in a substrate with sidewalls connected by a bottom surface in the substrate. A first insulator layer is deposited on the sidewalls of the trench so as to coat the sidewalls and the bottom surface. A conductor layer is deposited on the sidewalls and the bottom surface of the trench so as to coat the first insulator layer in the trench such that the conductor layer is on top of the first insulator layer in the trench. A first magnetic layer is deposited on the sidewalls and bottom surface of the trench so as to coat the first insulator layer in the trench without filling the trench. The first magnetic layer deposited on the sidewalls forms an inner closed magnetic loop and an outer closed magnetic loop within the trench.
    Type: Application
    Filed: June 22, 2015
    Publication date: October 8, 2015
    Inventors: Naigang Wang, Bucknell C. Webb
  • Publication number: 20150255529
    Abstract: A mechanism is provided for integrating an inductor into a semiconductor. A circular or other closed loop trench is formed in a substrate with sidewalls connected by a bottom surface in the substrate. A first insulator layer is deposited on the sidewalls of the trench so as to coat the sidewalls and the bottom surface. A conductor layer is deposited on the sidewalls and the bottom surface of the trench so as to coat the first insulator layer in the trench such that the conductor layer is on top of the first insulator layer in the trench. A first magnetic layer is deposited on the sidewalls and bottom surface of the trench so as to coat the first insulator layer in the trench without filling the trench. The first magnetic layer deposited on the sidewalls forms an inner closed magnetic loop and an outer closed magnetic loop within the trench.
    Type: Application
    Filed: March 7, 2014
    Publication date: September 10, 2015
    Applicant: International Business Machines Corporation
    Inventors: Naigang Wang, Bucknell C. Webb
  • Patent number: 9124173
    Abstract: A voltage conversion circuit such as a buck regulator circuit has a plurality of switches coupled to a voltage source; a slab inductor having a length, a width and a thickness, where the slab inductor is coupled between the plurality of switches and a load and carries a load current during operation of the plurality of switches. The voltage conversion circuit can also include means to reduce or cancel a detrimental effect of other wires on same chip, such as a power grid, that conduct a return current and thereby degrading the functionality of this slab inductor. In one embodiment the wires can be moved further away from the slab inductor and in another embodiment magnetic materials can be used to shield the slab inductor from at least one such interfering conductor.
    Type: Grant
    Filed: August 20, 2012
    Date of Patent: September 1, 2015
    Assignee: International Business Machines Corporation
    Inventors: Leland Chang, David Goren, Naigang Wang
  • Patent number: 9118242
    Abstract: A method is disclosed to operate a voltage conversion circuit such as a buck regulator circuit that has a plurality of switches coupled to a voltage source; a slab inductor having a length, a width and a thickness, where the slab inductor is coupled between the plurality of switches and a load and carries a load current during operation of the plurality of switches; and a means to reduce or cancel the detrimental effect of other wires on same chip, such as a power grid, potentially conducting return current and thereby degrading the functionality of this slab inductor. In one embodiment the wires can be moved further away from the slab inductor and in another embodiment magnetic materials can be used to shield the slab inductor from at least one such interfering conductor.
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: August 25, 2015
    Assignee: International Business Machines Corporation
    Inventors: Leland Chang, David Goren, Naigang Wang
  • Patent number: 9105841
    Abstract: A micro-electromechanical device and method of manufacture are disclosed. A sacrificial layer is formed on a silicon substrate. A metal layer is formed on a top surface of the sacrificial layer. Soft magnetic material is electrolessly deposited on the metal layer to manufacture the micro-electromechanical device. The sacrificial layer is removed to produce a metal beam separated from the silicon substrate by a space.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: August 11, 2015
    Assignee: International Business Machines Corporation
    Inventors: William J. Gallagher, Eugene J. O'Sullivan, Naigang Wang
  • Publication number: 20150200231
    Abstract: A mechanism is provided for an integrated laminated magnetic device. A substrate and a multilayer stack structure form the device. The multilayer stack structure includes alternating magnetic layers and diode structures formed on the substrate. Each magnetic layer in the multilayer stack structure is separated from another magnetic layer in the multilayer stack structure by a diode structure.
    Type: Application
    Filed: January 15, 2014
    Publication date: July 16, 2015
    Applicant: International Business Machines Corporation
    Inventors: Philipp Herget, Eugene J. O'Sullivan, Lubomyr T. Romankiw, Naigang Wang, Bucknell C. Webb
  • Patent number: 9064628
    Abstract: A thin film coupled inductor, a thin film spiral inductor, and a system that includes an electronic device and a power supply or power converter incorporating one or more such inductors. A thin film coupled inductor includes a wafer substrate; a bottom yoke comprising a magnetic material above the wafer substrate; a first insulating layer above the bottom yoke; a first conductor above the bottom yoke and separated therefrom by the first insulating layer; a second insulating layer above the first conductor; a second conductor above the second insulating layer; a third insulating layer above the second conductor; and a non-planar top yoke above the third insulating layer, the top yoke comprising a magnetic material.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: June 23, 2015
    Assignee: International Business Machines Corporation
    Inventors: Robert E. Fontana, Jr., Philipp Herget, Eugene J. O'Sullivan, Lubomyr T. Romankiw, Naigang Wang, Bucknell C. Webb
  • Publication number: 20150140687
    Abstract: A micro-electromechanical device and method of manufacture are disclosed. A sacrificial layer is formed on a silicon substrate. A metal layer is formed on a top surface of the sacrificial layer. Soft magnetic material is electrolessly deposited on the metal layer to manufacture the micro-electromechanical device. The sacrificial layer is removed to produce a metal beam separated from the silicon substrate by a space.
    Type: Application
    Filed: January 29, 2015
    Publication date: May 21, 2015
    Inventors: William J. Gallagher, Eugene J. O'Sullivan, Naigang Wang
  • Publication number: 20150140686
    Abstract: A micro-electromechanical device and method of manufacture are disclosed. A sacrificial layer is formed on a silicon substrate. A metal layer is formed on a top surface of the sacrificial layer. Soft magnetic material is electrolessly deposited on the metal layer to manufacture the micro-electromechanical device. The sacrificial layer is removed to produce a metal beam separated from the silicon substrate by a space.
    Type: Application
    Filed: January 29, 2015
    Publication date: May 21, 2015
    Inventors: William J. Gallagher, Eugene J. O'Sullivan, Naigang Wang
  • Publication number: 20150064362
    Abstract: A planar closed-magnetic-loop inductor and a method of fabricating the inductor are described. The inductor includes a first material comprising a cross-sectional shape including at least four segments, at least one of the at least four segments including a first edge and a second edge on opposite sides of an axial line through the at least one of the at least four segments. The first edge and the second edge are not parallel.
    Type: Application
    Filed: October 2, 2013
    Publication date: March 5, 2015
    Applicant: International Business Machines Corporation
    Inventors: Robert E. Fontana, JR., William J. Gallagher, Philipp Herget, Eugene J. O'Sullivan, Lubomyr T. Romankiw, Naigang Wang, Bucknell C. Webb
  • Publication number: 20150061815
    Abstract: A planar closed-magnetic-loop inductor and a method of fabricating the inductor are described. The inductor includes a first material comprising a cross-sectional shape including at least four segments, at least one of the at least four segments including a first edge and a second edge on opposite sides of an axial line through the at least one of the at least four segments. The first edge and the second edge are not parallel.
    Type: Application
    Filed: September 4, 2013
    Publication date: March 5, 2015
    Applicant: International Business Machines Corporation
    Inventors: Robert E. Fontana, JR., William J. Gallagher, Philipp Herget, Eugene J. O'Sullivan, Lubomyr T. Romankiw, Naigang Wang, Bucknell C. Webb
  • Patent number: 8956975
    Abstract: A method for forming magnetic conductors includes forming a metal structure on a substrate. Plating surfaces are prepared on the metal structure for electroless plating by at least one of: masking surfaces of the metal structure to prevent electroless plating on masked surfaces and/or activating a surface of the metal structure. Magnetic material is electrolessly plated directly on the plating surfaces to form a metal and magnetic material structure.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: February 17, 2015
    Assignee: International Business Machines Corporation
    Inventors: William J. Gallagher, Eugene J. O'Sullivan, Naigang Wang