Patents by Inventor Haesung Kwon

Haesung Kwon 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: 11039814
    Abstract: An imaging system includes: a transceiver cell for generating a pressure wave and converting an external pressure wave into an electrical signal; and a control unit for controlling an operation of the transceiver cell. The transceiver cell includes: a substrate; at least one membrane suspending from the substrate; and a plurality of transducer elements mounted on the at least one membrane. Each of the plurality of transducer elements has a bottom electrode, a piezoelectric layer on bottom electrode, and at least one top electrode on the piezoelectric layer. Each of the plurality of transducer element generates a bending moment in response to applying an electrical potential across the bottom electrode and the at least one top electrode and develops an electrical charge in response to a bending moment due to the external pressure wave.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: June 22, 2021
    Assignee: EXO IMAGING, INC.
    Inventors: Sandeep Akkaraju, Haesung Kwon, Yusuf Haque, Janusz Bryzek
  • Publication number: 20210172788
    Abstract: A micromachined ultrasonic transducer (MUT). The MUT includes: a substrate; a membrane suspending from the substrate; a bottom electrode disposed on the membrane; a piezoelectric layer disposed on the bottom electrode and an asymmetric top electrode is disposed on the piezoelectric layer. The areal density distribution of the asymmetric electrode along an axis has a plurality of local maxima, wherein locations of the plurality of local maxima coincide with locations where a plurality of anti-nodal points at a vibrational resonance frequency is located.
    Type: Application
    Filed: February 19, 2021
    Publication date: June 10, 2021
    Inventors: Sandeep AKKARAJU, Haesung KWON, Brian BIRCUMSHAW
  • Publication number: 20210151661
    Abstract: Disclosed herein are ultrasonic transducer systems with hybrid contacts comprising: an ultrasonic transducer element comprising a substrate and a membrane; an electrical circuitry; and one or more contacts connected to the ultrasonic transducer element and the electrical circuitry, wherein the one or more contacts are: designed geometrically using a set of rules; arranged with respect to the membrane based on the set of rules or a second set of rules, or both.
    Type: Application
    Filed: January 27, 2021
    Publication date: May 20, 2021
    Inventors: Haesung Kwon, Brian Bircumshaw, Sandeep Akkaraju
  • Patent number: 10969270
    Abstract: A micromachined ultrasonic transducer (MUT). The MUT includes: a substrate; a membrane suspending from the substrate; a bottom electrode disposed on the membrane; a piezoelectric layer disposed on the bottom electrode and an asymmetric top electrode is disposed on the piezoelectric layer. The areal density distribution of the asymmetric electrode along an axis has a plurality of local maxima, wherein locations of the plurality of local maxima coincide with locations where a plurality of anti-nodal points at a vibrational resonance frequency is located.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: April 6, 2021
    Assignee: EXO IMAGING, INC.
    Inventors: Sandeep Akkaraju, Haesung Kwon, Brian Bircumshaw
  • Publication number: 20210078042
    Abstract: Methods for improving the electromechanical coupling coefficient and bandwidth of micromachined ultrasonic transducers, or MUTs, are presented as well as methods of manufacture of the MUTs improved by the presented methods.
    Type: Application
    Filed: September 11, 2020
    Publication date: March 18, 2021
    Inventors: Brian BIRCUMSHAW, Sandeep AKKARAJU, Haesung KWON
  • Publication number: 20210069748
    Abstract: Disclosed herein are ultrasonic transducer systems comprising: an ultrasonic transducer comprising a substrate, a diaphragm, and a piezoelectric element; a first electrical circuitry coupled to the ultrasonic transducer, the first electrical circuitry configured for driving the ultrasonic transducer or detecting motion of the diaphragm; a plurality of electrical ports coupled to the ultrasonic transducer; and a second electrical circuitry connected to two or more of the plurality of electrical ports, the electrical circuitry comprising one or more of: a resistor, a capacitor, a switch, and an amplifier, wherein the second electrical circuitry is independent from the first electrical circuitry, and wherein the second electrical circuitry is configured to dampen the motion of the diaphragm.
    Type: Application
    Filed: November 16, 2020
    Publication date: March 11, 2021
    Inventors: Brian BIRCUMSHAW, Sandeep AKKARAJU, Haesung KWON
  • Patent number: 10750643
    Abstract: A method of manufacturing a chassis that cools thermal energy generating components of an information handling system (IHS) includes: forming an enclosure with a chassis that has a base wall for provisioning a thermal energy generating component; forming one or more stiffeners each having one or more air channels formed transversely through for directing air proximate to the base wall; attaching the one or more stiffeners laterally across the base wall; and attaching a planar member that is horizontally on top of the one or more stiffeners for engaging one or more forward compute components on top of the planar member that substantially block air flow above the planar member to the thermal energy generating component. The one or more air channels eliminate thermal shadowing caused by thermal energy generating components provisioned in a rear area of the chassis.
    Type: Grant
    Filed: July 3, 2017
    Date of Patent: August 18, 2020
    Assignee: Dell Products, L.P.
    Inventors: Haesung Kwon, Austin Michael Shelnutt, Walter Carver
  • Publication number: 20200249079
    Abstract: An array of micromachined ultrasonic transducers (MUTs). The array has first and second rows, the MUTs in the first row being equally spaced by a horizontal pitch in a horizontal direction, the MUTs in the second row being equally spaced by the horizontal pitch in the horizontal direction. The MUTs in the second row are shifted along the horizontal direction by a first horizontal distance relative to the MUTs in the first row and shifted along a vertical direction by a first vertical distance relative to the MUTs in the first row. The first horizontal distance is greater than zero and less than the horizontal pitch. The first vertical distance ranges from one tenth of a horizontal width of a MUT to a half of a vertical height of a MUT.
    Type: Application
    Filed: April 1, 2020
    Publication date: August 6, 2020
    Inventors: Sandeep AKKARAJU, Haesung KWON, Brian BIRCUMSHAW
  • Publication number: 20200225082
    Abstract: A micromachined ultrasonic transducer (MUT). The MUT includes: a substrate; a membrane suspending from the substrate; a bottom electrode disposed on the membrane; a piezoelectric layer disposed on the bottom electrode and an asymmetric top electrode is disposed on the piezoelectric layer. The areal density distribution of the asymmetric electrode along an axis has a plurality of local maxima, wherein locations of the plurality of local maxima coincide with locations where a plurality of anti-nodal points at a vibrational resonance frequency is located.
    Type: Application
    Filed: March 27, 2020
    Publication date: July 16, 2020
    Inventors: Sandeep AKKARAJU, Haesung KWON, Brian BIRCUMSHAW
  • Patent number: 10656007
    Abstract: An array of micromachined ultrasonic transducers (MUTs). The array has first and second rows, the MUTs in the first row being equally spaced by a horizontal pitch in a horizontal direction, the MUTs in the second row being equally spaced by the horizontal pitch in the horizontal direction. The MUTs in the second row are shifted along the horizontal direction by a first horizontal distance relative to the MUTs in the first row and shifted along a vertical direction by a first vertical distance relative to the MUTs in the first row. The first horizontal distance is greater than zero and less than the horizontal pitch. The first vertical distance ranges from one tenth of a horizontal width of a MUT to a half of a vertical height of a MUT.
    Type: Grant
    Filed: April 11, 2018
    Date of Patent: May 19, 2020
    Assignee: EXO IMAGING INC.
    Inventors: Sandeep Akkaraju, Haesung Kwon, Brian Bircumshaw
  • Patent number: 10648852
    Abstract: A micromachined ultrasonic transducer (MUT). The MUT includes: a substrate; a membrane suspending from the substrate; a bottom electrode disposed on the membrane; a piezoelectric layer disposed on the bottom electrode and an asymmetric top electrode is disposed on the piezoelectric layer. The areal density distribution of the asymmetric electrode along an axis has a plurality of local maxima, wherein locations of the plurality of local maxima coincide with locations where a plurality of anti-nodal points at a vibrational resonance frequency is located.
    Type: Grant
    Filed: April 11, 2018
    Date of Patent: May 12, 2020
    Assignee: EXO IMAGING INC.
    Inventors: Sandeep Akkaraju, Haesung Kwon, Brian Bircumshaw
  • Publication number: 20190316958
    Abstract: A micromachined ultrasonic transducer (MUT). The MUT includes: a substrate; a membrane suspending from the substrate; a bottom electrode disposed on the membrane; a piezoelectric layer disposed on the bottom electrode and an asymmetric top electrode is disposed on the piezoelectric layer. The areal density distribution of the asymmetric electrode along an axis has a plurality of local maxima, wherein locations of the plurality of local maxima coincide with locations where a plurality of anti-nodal points at a vibrational resonance frequency is located.
    Type: Application
    Filed: April 11, 2018
    Publication date: October 17, 2019
    Applicant: EXO IMAGING INC.
    Inventors: Sandeep Akkaraju, Haesung Kwon, Brian Bircumshaw
  • Publication number: 20190316957
    Abstract: An array of micromachined ultrasonic transducers (MUTs). The array has first and second rows, the MUTs in the first row being equally spaced by a horizontal pitch in a horizontal direction, the MUTs in the second row being equally spaced by the horizontal pitch in the horizontal direction. The MUTs in the second row are shifted along the horizontal direction by a first horizontal distance relative to the MUTs in the first row and shifted along a vertical direction by a first vertical distance relative to the MUTs in the first row. The first horizontal distance is greater than zero and less than the horizontal pitch. The first vertical distance ranges from one tenth of a horizontal width of a MUT to a half of a vertical height of a MUT.
    Type: Application
    Filed: April 11, 2018
    Publication date: October 17, 2019
    Applicant: EXO IMAGING INC.
    Inventors: Sandeep Akkaraju, Haesung Kwon, Brian Bircumshaw
  • Patent number: 10437270
    Abstract: In accordance with embodiments of the present disclosure, an information handling system may include a processor and a storage resource communicatively coupled to the processor. The storage resource may be configured to monitor one or more operating parameters of the storage resource indicative of vibration external to the storage resource affecting performance of the storage resource, determine whether the one or more operating parameters exceed respective threshold values, and in response to determining that the one or more operating parameters exceed a respective threshold value, communicate an indication from the storage resource to a subsystem of the information handling system that the storage resource is experiencing excessive vibration from sources external to the storage resource.
    Type: Grant
    Filed: September 26, 2016
    Date of Patent: October 8, 2019
    Assignee: Dell Products L.P.
    Inventors: Haesung Kwon, Chandrashekar Nelogal, David M. Pereira
  • Patent number: 10050363
    Abstract: A connector for electrically coupling an information handling resource to a backplane, may include a lead frame comprising a plurality of electrically-conductive traces configured to be electrically coupled to the backplane and a receptacle having a plurality of electrically-conductive pins each electrically coupled to a corresponding one of the plurality of electrically-conductive traces of the lead frame, configured to mechanically and electrically couple the respective modular information handling resource to the receptacle, and structurally oriented relative to the electrically-conductive traces of the lead frame and the backplane such that insertion and removal of the respective modular information handling resource to or from the receptacle is caused by applying force to the respective modular information handling resource in a direction substantially parallel to a surface of the backplane having a surface area substantially larger than that of at least all but one of other surfaces of the backplane.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: August 14, 2018
    Assignee: Dell Products L.P.
    Inventors: Kevin W. Mundt, Haesung Kwon
  • Patent number: 10042399
    Abstract: The side profile of a hard drive assembly may be configured with one or more open areas to allow cooling air to pass side-to-side across the hard drive assembly through a lateral flow channel provided by a cavity defined in the base portion of the hard drive assembly.
    Type: Grant
    Filed: August 10, 2015
    Date of Patent: August 7, 2018
    Assignee: Dell Products LP
    Inventors: Kevin W. Mundt, Haesung Kwon, Frank W. Yu
  • Publication number: 20180153512
    Abstract: An imaging system includes: a transceiver cell for generating a pressure wave and converting an external pressure wave into an electrical signal; and a control unit for controlling an operation of the transceiver cell. The transceiver cell includes: a substrate; at least one membrane suspending from the substrate; and a plurality of transducer elements mounted on the at least one membrane. Each of the plurality of transducer elements has a bottom electrode, a piezoelectric layer on bottom electrode, and at least one top electrode on the piezoelectric layer. Each of the plurality of transducer element generates a bending moment in response to applying an electrical potential across the bottom electrode and the at least one top electrode and develops an electrical charge in response to a bending moment due to the external pressure wave.
    Type: Application
    Filed: November 21, 2017
    Publication date: June 7, 2018
    Applicant: EXO IMAGING INC.
    Inventors: Sandeep Akkaraju, Haesung Kwon, Yusuf Haque, Janusz Bryzek
  • Publication number: 20180123272
    Abstract: A connector for electrically coupling an information handling resource to a backplane, may include a lead frame comprising a plurality of electrically-conductive traces configured to be electrically coupled to the backplane and a receptacle having a plurality of electrically-conductive pins each electrically coupled to a corresponding one of the plurality of electrically-conductive traces of the lead frame, configured to mechanically and electrically couple the respective modular information handling resource to the receptacle, and structurally oriented relative to the electrically-conductive traces of the lead frame and the backplane such that insertion and removal of the respective modular information handling resource to or from the receptacle is caused by applying force to the respective modular information handling resource in a direction substantially parallel to a surface of the backplane having a surface area substantially larger than that of at least all but one of other surfaces of the backplane.
    Type: Application
    Filed: October 28, 2016
    Publication date: May 3, 2018
    Applicant: Dell Products L.P.
    Inventors: Kevin W. MUNDT, Haesung KWON
  • Publication number: 20180088604
    Abstract: In accordance with embodiments of the present disclosure, an information handling system may include a processor and a storage resource communicatively coupled to the processor. The storage resource may be configured to monitor one or more operating parameters of the storage resource indicative of vibration external to the storage resource affecting performance of the storage resource, determine whether the one or more operating parameters exceed respective threshold values, and in response to determining that the one or more operating parameters exceed a respective threshold value, communicate an indication from the storage resource to a subsystem of the information handling system that the storage resource is experiencing excessive vibration from sources external to the storage resource.
    Type: Application
    Filed: September 26, 2016
    Publication date: March 29, 2018
    Applicant: Dell Products L.P.
    Inventors: Haesung KWON, Chandrashekar NELOGAL, David M. PEREIRA
  • Patent number: 9927850
    Abstract: A component carrier may include a carrier front wall and a plurality of carrier side walls extending in a substantially parallel orientation to each other from opposite edges of the chassis front wall, and defining a component channel between them. The carrier side walls may include respective guide flanges extending substantially perpendicularly therefrom such that the guide flanges are in a substantially parallel orientation to each other and the guide flanges are oriented relative to the remainder of the component carrier such that when a component is mounted within the component channel to the component carrier, and the guide flanges may define a plane whereby a combined mass on a first side of the plane of the component carrier and the component is approximately equal to a combined mass on a second side of the component carrier and the component.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: March 27, 2018
    Assignee: Dell Products L.P.
    Inventors: Haesung Kwon, Bernard D. Strmiska