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: 10811177
    Abstract: A magnetic laminating structure and process for preventing substrate bowing include a first magnetic layer, at least one additional magnetic layer, and a dielectric spacer disposed between the first and at least one additional magnetic layers. The magnetic layers are characterized by defined tensile strength. To balance the tensile strength of the magnetic layer, the dielectric layer is selected to provide compressive strength so as to counteract the tendency of the wafer to bow as a consequence of the tensile strength imparted by the magnetic layer(s).
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: October 20, 2020
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Bruce B. Doris, Hariklia Deligianni, Eugene J. O'Sullivan, Naigang Wang
  • Patent number: 10797642
    Abstract: Semiconductor devices and methods relating to the semiconductor devices are provided. A semiconductor device includes a resonant clock circuit. The semiconductor device further includes an inductor. The semiconductor device also includes a magnetic layer formed of a magnetic material disposed in between a portion of the resonant clock circuit and the inductor. Clock signals of the resonant clock circuit are utilized by the magnetic layer.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: October 6, 2020
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Bruce B. Doris, Rajiv V. Joshi, Naigang Wang
  • Patent number: 10784045
    Abstract: A technique relates to a method of forming a laminated multilayer magnetic structure. An adhesion layer is deposited on a substrate. A magnetic seed layer is deposited on top of the adhesion layer. Magnetic layers and non-magnetic spacer layers are alternatingly deposited such that an even number of the magnetic layers is deposited while an odd number of the non-magnetic spacer layers is deposited. The odd number is one less than the even number. Every two of the magnetic layers is separated by one of the non-magnetic spacer layers. The first of the magnetic layers is deposited on the magnetic seed layer, and the magnetic layers each have a thickness less than 500 nanometers.
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: September 22, 2020
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Hariklia Deligianni, William J. Gallagher, Sathana Kitayaporn, Eugene J. O'Sullivan, Lubomyr T. Romankiw, Naigang Wang, Joonah Yoon
  • Patent number: 10763038
    Abstract: A technique relates to a method of forming a laminated multilayer magnetic structure. An adhesion layer is deposited on a substrate. A magnetic seed layer is deposited on top of the adhesion layer. Magnetic layers and non-magnetic spacer layers are alternatingly deposited such that an even number of the magnetic layers is deposited while an odd number of the non-magnetic spacer layers is deposited. The odd number is one less than the even number. Every two of the magnetic layers is separated by one of the non-magnetic spacer layers. The first of the magnetic layers is deposited on the magnetic seed layer, and the magnetic layers each have a thickness less than 500 nanometers.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: September 1, 2020
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Hariklia Deligianni, William J. Gallagher, Sathana Kitayaporn, Eugene J. O'Sullivan, Lubomyr T. Romankiw, Naigang Wang, Joonah Yoon
  • Patent number: 10741327
    Abstract: An inductor device includes a conductive coil formed within a dielectric material and having a central core area within the coil. Particles are dispersed within the central core region to reduce eddy current loss and increase energy storage. The particles include magnetic properties.
    Type: Grant
    Filed: January 30, 2017
    Date of Patent: August 11, 2020
    Assignee: International Business Machines Corporation
    Inventors: Chandrasekharan Kothandaraman, Eugene J. O'Sullivan, Naigang Wang
  • Publication number: 20200249910
    Abstract: In an embodiment, a method includes configuring a specialized circuit for floating point computations using numbers represented by a hybrid format, wherein the hybrid format includes a first format and a second format. In the embodiment, the method includes operating the further configured specialized circuit to store an approximation of a numeric value in the first format during a forward pass for training a deep learning network. In the embodiment, the method includes operating the further configured specialized circuit to store an approximation of a second numeric value in the second format during a backward pass for training the deep learning network.
    Type: Application
    Filed: February 6, 2019
    Publication date: August 6, 2020
    Applicant: International Business Machines Corporation
    Inventors: NAIGANG WANG, Jungwook Choi, Kailash Gopalakrishnan, Ankur Agrawal, Silvia Melitta Mueller
  • Publication number: 20200168374
    Abstract: Embodiments are directed to a method of forming a laminated magnetic inductor and resulting structures having multiple magnetic layer thicknesses. A first magnetic stack having one or more magnetic layers alternating with one or more insulating layers is formed in a first inner region of the laminated magnetic inductor. A second magnetic stack is formed opposite a major surface of the first magnetic stack in an outer region of the laminated magnetic inductor. A third magnetic stack is formed opposite a major surface of the second magnetic stack in a second inner region of the laminated magnetic inductor. The magnetic layers are formed such that a thickness of a magnetic layer in each of the first and third magnetic stacks is less than a thickness of a magnetic layer in the second magnetic stack.
    Type: Application
    Filed: January 28, 2020
    Publication date: May 28, 2020
    Inventors: Hariklia Deligianni, Bruce B. Doris, Eugene J. O'Sullivan, Naigang Wang
  • Patent number: 10657442
    Abstract: A compute matrix is configured to include a set of compute units, each compute unit including a multiplier and an accumulator, each of the multiplier and the accumulator formed using at least one floating point unit (FPU). An accumulator array is configured to include a set of external accumulators. The compute matrix is operated to produce a chunk dot-product using a first chunk of a first input vector and a first chunk of a second input vector. The accumulator array is operated to output a dot-product of the first input vector and the second input vector using the chunk dot-product.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: May 19, 2020
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Naigang Wang, Jungwook Choi, Kailash Gopalakrishnan, Daniel Brand
  • Patent number: 10639679
    Abstract: A first material is filled during a semiconductor fabrication process in a space bound on at least one side by a fence formation created as a result of an etching operation. A solvent-removable material is deposited such that the solvent-removable material encapsulates at least that portion of the fence formation which is protruding from the structure such that a height of the fence formation exceeds a height of the structure. The portion of the fence formation which is protruding from the structure and a first portion of the solvent-removable material are removed by planarization. A second portion of the solvent-removable material is removed by dissolving in a solvent, the second portion remaining after removal by the planarization of the first portion of the solvent-removable material.
    Type: Grant
    Filed: April 3, 2017
    Date of Patent: May 5, 2020
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Hariklia Deligianni, Bruce B. Doris, Eugene J. O'Sullivan, Naigang Wang
  • Publication number: 20200132751
    Abstract: Techniques regarding autonomous identification of aged circuits are provided. For example, one or more embodiments described herein can comprise a system, which can comprise a memory that can store computer executable components. The system can also comprise a processor, operably coupled to the memory, and that can execute the computer executable components stored in the memory. The computer executable components can comprise an identification component, operatively coupled to the processor, that can identify an aged circuit by analyzing a current-voltage characteristic curve for a distortion in a sub-threshold quiescent current signature of the aged circuit.
    Type: Application
    Filed: October 24, 2018
    Publication date: April 30, 2020
    Inventors: Franco Stellari, Peilin Song, Naigang Wang
  • Publication number: 20200112254
    Abstract: A multi-phase buck switching converter having grouped pairs of phases, each phase using two magnetically coupled air-core inductors. For each group, a first driver circuit controlling switching of a first power transistor switching circuit coupled to a first air-core inductor output for driving an output load at the first phase. A second driver circuit controlling switching of a second power transistor switching circuit coupled to a second air-core inductor output for driving said output load at the second phase. The first and second phases are spaced 180° apart. The coupled air-core inductors per group of such orientation, separation distance and mutual inductance polarity relative to each other such that magnetic coupling between the two or more inductors at each phase results in a net increase in effective inductance per unit volume. Each air-core inductor is a metal slab of defined length, height and thickness formed using back-end-of-line semiconductor manufacturing process.
    Type: Application
    Filed: December 9, 2019
    Publication date: April 9, 2020
    Inventors: Xin Zhang, Todd E. Takken, Naigang Wang, Leland Chang
  • Patent number: 10607759
    Abstract: Embodiments are directed to a method of forming a laminated magnetic inductor and resulting structures having anisotropic magnetic layers. A first magnetic stack is formed having one or more magnetic layers alternating with one or more insulating layers. A trench is formed in the first magnetic stack oriented such that an axis of the trench is perpendicular to a hard axis of the magnetic inductor. The trench is filled with a dielectric material.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: March 31, 2020
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Hariklia Deligianni, Bruce B. Doris, Eugene J. O'Sullivan, Naigang Wang
  • Patent number: 10597769
    Abstract: Embodiments are directed to a method of forming a magnetic stack arrangement of a laminated magnetic inductor having a high frequency peak quality factor (Q). A first magnetic stack is formed having one or more magnetic layers alternating with one or more insulating layers in a first inner region of a laminated magnetic inductor. A second magnetic stack is formed opposite a surface of the first magnetic stack in an outer region of the laminated magnetic inductor. A third magnetic stack is formed opposite a surface of the second magnetic stack in a second inner region of the laminated magnetic inductor. The insulating layers are formed such that a thickness of an insulating layer in the second magnetic stack is greater than a thickness of an insulating layer in the first magnetic stack.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: March 24, 2020
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Hariklia Deligianni, Bruce B. Doris, Eugene J. O'Sullivan, Naigang Wang
  • Patent number: 10600566
    Abstract: A planar magnetic structure includes a closed loop structure having a plurality of core segments divided into at least two sets. A coil is formed about one or more core segments. A first antiferromagnetic layer is formed on a first set of core segments, and a second antiferromagnetic layer is formed on a second set of core segments. The first and second antiferromagnetic layers include different blocking temperatures and have an easy axis pinning a magnetic moment in two different directions, wherein when current flows through the coil, the magnetic moments rotate to form a closed magnetic loop in the closed loop structure.
    Type: Grant
    Filed: October 13, 2016
    Date of Patent: March 24, 2020
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Guohan Hu, Naigang Wang
  • Patent number: 10593449
    Abstract: Embodiments are directed to a method of forming a laminated magnetic inductor and resulting structures having multiple magnetic layer thicknesses. A first magnetic stack having one or more magnetic layers alternating with one or more insulating layers is formed in a first inner region of the laminated magnetic inductor. A second magnetic stack is formed opposite a major surface of the first magnetic stack in an outer region of the laminated magnetic inductor. A third magnetic stack is formed opposite a major surface of the second magnetic stack in a second inner region of the laminated magnetic inductor. The magnetic layers are formed such that a thickness of a magnetic layer in each of the first and third magnetic stacks is less than a thickness of a magnetic layer in the second magnetic stack.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: March 17, 2020
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Hariklia Deligianni, Bruce B. Doris, Eugene J. O'Sullivan, Naigang Wang
  • Patent number: 10592208
    Abstract: A specialized circuit is configured for floating point computations using numbers represented by a very low precision format (VLP format). The VLP format includes less than sixteen bits and is apportion into a sign bit, exponent bits (e), and mantissa bits (p). The configured specialized circuit is operated to store an approximation of a numeric value in the VLP format, where the approximation is represented as a function of a multiple of a fraction, where the fraction is an inverse of a number of discrete values that can be represented using only the mantissa bits.
    Type: Grant
    Filed: May 7, 2018
    Date of Patent: March 17, 2020
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Naigang Wang, Kailash Gopalakrishnan, Jungwook Choi, Silvia M. Mueller, Ankur Agrawal, Daniel Brand
  • Patent number: 10593450
    Abstract: Embodiments are directed to a method of forming a laminated magnetic inductor and resulting structures having multiple magnetic layer thicknesses. A first magnetic stack having one or more magnetic layers alternating with one or more insulating layers is formed in a first inner region of the laminated magnetic inductor. A second magnetic stack is formed opposite a major surface of the first magnetic stack in an outer region of the laminated magnetic inductor. A third magnetic stack is formed opposite a major surface of the second magnetic stack in a second inner region of the laminated magnetic inductor. The magnetic layers are formed such that a thickness of a magnetic layer in each of the first and third magnetic stacks is less than a thickness of a magnetic layer in the second magnetic stack.
    Type: Grant
    Filed: December 31, 2018
    Date of Patent: March 17, 2020
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Hariklia Deligianni, Bruce B. Doris, Eugene J. O'Sullivan, Naigang Wang
  • Patent number: 10573444
    Abstract: A magnetic laminating structure and process for preventing substrate bowing include multiple film stack segments that include a first magnetic layer, at least one additional magnetic layer, and a dielectric spacer disposed between the first and at least one additional magnetic layers. A dielectric isolation layer is intermediate magnetic layers and on the sidewalls thereof. The magnetic layers are characterized by defined tensile strength and the multiple segments function to relive the stress as the magnetic laminating structure is formed, wherein the cumulative thickness of the magnetic layers is greater than 1 micron. Also described are methods for forming the magnetic laminating structure.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: February 25, 2020
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Bruce B. Doris, Hariklia Deligianni, Eugene J. O'Sullivan, Naigang Wang
  • Publication number: 20200058440
    Abstract: A planar magnetic structure includes a closed loop structure having a plurality of core segments divided into at least two sets. A coil is formed about one or more core segments. A first antiferromagnetic layer is formed on a first set of core segments, and a second antiferromagnetic layer is formed on a second set of core segments. The first and second antiferromagnetic layers include different blocking temperatures and have an easy axis pinning a magnetic moment in two different directions, wherein when current flows through the coil, the magnetic moments rotate to form a closed magnetic loop in the closed loop structure.
    Type: Application
    Filed: October 28, 2019
    Publication date: February 20, 2020
    Inventors: Guohan Hu, Naigang Wang
  • Publication number: 20200038918
    Abstract: A first material is filled during a semiconductor fabrication process in a space bound on at least one side by a fence formation created as a result of an etching operation. A solvent-removable material is deposited such that the solvent-removable material encapsulates at least that portion of the fence formation which is protruding from the structure such that a height of the fence formation exceeds a height of the structure. The portion of the fence formation which is protruding from the structure and a first portion of the solvent-removable material are removed by planarization. A second portion of the solvent-removable material is removed by dissolving in a solvent, the second portion remaining after removal by the planarization of the first portion of the solvent-removable material.
    Type: Application
    Filed: October 7, 2019
    Publication date: February 6, 2020
    Applicant: International Business Machines Corporation
    Inventors: Hariklia Deligianni, Bruce B. Doris, Eugene J. O'Sullivan, Naigang Wang