Patents by Inventor Seunghyun Ha

Seunghyun Ha 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: 20240096909
    Abstract: A chip on film (COF) package includes a film substrate including a base film having a mounting region, a main line pattern extending on the base film, and a branch line pattern extending on the base film and electrically connected to the main line pattern, a semiconductor chip vertically overlapping the mounting region, a first bump structure disposed between the semiconductor chip and the film substrate and electrically connected to the main line pattern, and a second bump structure disposed between the semiconductor chip and the film substrate and electrically connected to the branch line pattern, the branch line pattern extends so as not to overlap a first edge of the first bump structure facing a first edge of the mounting region and a first edge of the second bump structure facing the first edge of the mounting region.
    Type: Application
    Filed: May 23, 2023
    Publication date: March 21, 2024
    Inventors: Seunghyun Cho, Jaemin Jung, Jeongkyu Ha
  • Patent number: 11480398
    Abstract: The present invention is directed to a manifold for directing cooling fluid and/or gas to a heat exchanger in a flow configuration designed to optimize heat transfer from the heat exchanger. The manifold can take many different forms such as a layered construction with distributed inlet paths, local outlet paths, a central collection changer and a path for fluid removal. The manifold can be formed from a metal, plastic, rubber, ceramic, or other heat resistant material known to or conceivable by one of skill in the art. The manifold can also be combined with any type of heat exchanger known to or conceivable by one of skill in the art to form a thermal management unit. To optimize overall properties such as low pressure drop, high heat transfer, and excellent temperature uniformity of the thermal management unit, the manifold can be graded, expanded and scaled as needed.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: October 25, 2022
    Assignee: The Johns Hopkins University
    Inventors: Kevin J. Hemker, Timothy P. Weihs, Stephen Ryan, Longyu Zhao, Seunghyun Ha, Yong Zhang, James K. Guest
  • Patent number: 11209390
    Abstract: A volumetric microfluidic injector for capillary electrophoresis (CE) for highly repeatable sample injection has been designed and built to eliminate known injection bias in hydrodynamic injection. A defined volume from 1-10 nL or 0.1-100 nL of sample is confined in a defined region of a micro-valve PDMS microfluidic injector chip and electrophoretic potential is applied to drive sample into a separation device such as an embedded fused silica capillary for separation and detection. Using a 75 ?m ID capillary, the RSD of an absorbance peak area as low as 1.32% (n=11) is obtained. As a comparison, the time-dependent injection was tested using the same chip which resulted in an inferior repeatability.
    Type: Grant
    Filed: October 6, 2017
    Date of Patent: December 28, 2021
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Noel Seunghyun Ha, R. Michael Van Dam, Jimmy Ly
  • Patent number: 10982913
    Abstract: The present invention is directed to devices formed from three dimensional (3D) structures composed of wires, yarns of wires, or 3D printed structures. The devices of the present invention offer the potential for 3D structures with multiple properties optimized concurrently, using optimization within the 3D manufacturing constraints. The 3D structures of the present invention include multiple properties that are optimized for heat transfer applications. The present invention also includes the methods for optimization of the 3D woven lattices as well as methods of use of the 3D woven lattices in heat transfer applications.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: April 20, 2021
    Assignees: The Johns Hopkins University, Saertex USA, LLC
    Inventors: Kevin J. Hemker, Timothy P. Weihs, Stephen Ryan, Longyu Zhao, Seunghyun Ha, Yong Zhang, Sen Lin, James K. Guest, Keith Sharp
  • Publication number: 20200041451
    Abstract: A volumetric microfluidic injector for capillary electrophoresis (CE) for highly repeatable sample injection has been designed and built to eliminate known injection bias in hydrodynamic injection. A defined volume from 1-10 nL or 0.1-100 nL of sample is confined in a defined region of a micro-valve PDMS microfluidic injector chip and electrophoretic potential is applied to drive sample into a separation device such as an embedded fused silica capillary for separation and detection. Using a 75 ?m ID capillary, the RSD of an absorbance peak area as low as 1.32% (n=11) is obtained. As a comparison, the time-dependent injection was tested using the same chip which resulted in an inferior repeatability.
    Type: Application
    Filed: October 6, 2017
    Publication date: February 6, 2020
    Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Noel Seunghyun Ha, R. Michael Van Dam, Jimmy Ly
  • Publication number: 20170023310
    Abstract: The present invention is directed to devices formed from three-dimensional (3D) structures composed of metallic, ceramic or polymeric wires or bundles and yarns of wires that are either solid or hollow like a tube. The devices of the present invention offer the potential for 3D structures with multiple properties optimized concurrently, in some cases using a topology optimization routine that includes the 3D manufacturing constraints. The properties can be optimized in different directions. The 3D structures of the present invention include multiple properties that are optimized for a range of different applications, including heat transfer. The present invention also includes the methods for optimization of the 3D structures as well as methods of use of the 3D structures in heat transfer applications.
    Type: Application
    Filed: May 23, 2016
    Publication date: January 26, 2017
    Inventors: Kevin J. Hemker, James K. Guest, Timothy P. Weihs, Stephen M. Ryan, Longyu Zhao, Seunghyun Ha, Yong Zhang, Stefan Szyniszewski, Sergey Kuznetsov
  • Publication number: 20160363389
    Abstract: The present invention is directed to devices formed from three dimensional (3D) structures composed of wires, yarns of wires, or 3D printed structures. The devices of the present invention offer the potential for 3D structures with multiple properties optimized concurrently, using optimization within the 3D manufacturing constraints. The 3D structures of the present invention include multiple properties that are optimized for heat transfer applications. The present invention also includes the methods for optimization of the 3D woven lattices as well as methods of use of the 3D woven lattices in heat transfer applications.
    Type: Application
    Filed: May 23, 2016
    Publication date: December 15, 2016
    Inventors: Kevin J. Hemker, Timothy P. Weihs, Stephen Ryan, Longyu Zhao, Seunghyun Ha, Yong Zhang, Sen Lin, James K. Guest, Keith Sharp
  • Publication number: 20160341495
    Abstract: The present invention is directed to a manifold for directing cooling fluid and/or gas to a heat exchanger in a flow configuration designed to optimize heat transfer from the heat exchanger. The manifold can take many different forms such as a layered construction with distributed inlet paths, local outlet paths, a central collection changer and a path for fluid removal. The manifold can be formed from a metal, plastic, rubber, ceramic, or other heat resistant material known to or conceivable by one of skill in the art. The manifold can also be combined with any type of heat exchanger known to or conceivable by one of skill in the art to form a thermal management unit. To optimize overall properties such as low pressure drop, high heat transfer, and excellent temperature uniformity of the thermal management unit, the manifold can be graded, expanded and scaled as needed.
    Type: Application
    Filed: May 23, 2016
    Publication date: November 24, 2016
    Inventors: Kevin J. Hemker, Timothy P. Weihs, Stephen Ryan, Longyu Zhao, Seunghyun Ha, Yong Zhang, James K. Guest