Patents by Inventor Ding-Yeong Wang

Ding-Yeong 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: 7539049
    Abstract: A magnetic random access memory includes at least a first-direction write current line and multiple second-direction write current line, intersecting with the first-direction write current line in substantial perpendicular and forming several intersecting regions. Multiple magnetic memory cells are respectively located at the intersecting regions for receiving an induced magnetic field in a time sequence. Every at least two adjacent memory cells are in parallel or series connection, to form at least one memory unit. An easy axis of a free layer of each magnetic memory cell is substantially perpendicular to a magnetization of a pinned layer. The easy axis and the first-direction write current line form an including angle of about 45°. A read bit-line circuit connects to a first terminal of the memory unit. A read word-line circuit connects to a second terminal of the memory unit.
    Type: Grant
    Filed: November 27, 2007
    Date of Patent: May 26, 2009
    Assignee: Industrial Technology Research Institute
    Inventors: Chien-Chung Hung, Ming-Jer Kao, Ding-Yeong Wang, Yuan-Jen Lee
  • Publication number: 20090040663
    Abstract: A magnetic memory includes a stack, a first writing wire, and a second writing wire. The stack includes a magnetic pinned layer, a tunnel barrier insulating layer, and a magnetic free layer, so as to form a magnetic tunnel junction (MTJ). The MTJ has an easy axis. The first writing wire is disposed under the stack. The included angle between the first writing wire and the easy axis of the MTJ is smaller than 45 degrees and greater than 0 degrees on a projected plane. The second writing wire is disposed above the stack. The included angle between the second writing wire and the easy axis of the MTJ is smaller than 45 degrees and greater than 0 degrees on the projected plane.
    Type: Application
    Filed: October 9, 2008
    Publication date: February 12, 2009
    Applicant: Industrial Technology Research Institute
    Inventors: Yuan-Jen Lee, Ding-Yeong Wang, Chien-Chung Hung
  • Publication number: 20090039450
    Abstract: A structure of magnetic memory cell including a first anti-ferromagnetic layer is provided. A first pinned layer is formed over the first anti-ferromagnetic layer. A tunneling barrier layer is formed over the first pinned layer. A free layer is formed over the tunneling barrier layer. A metal layer is formed over the free layer. A second pinned layer is formed over the metal layer. A second anti-ferromagnetic layer is formed over the second pinned layer.
    Type: Application
    Filed: December 25, 2007
    Publication date: February 12, 2009
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Yuan-Jen Lee, Ding-Yeong Wang, Chien-Chung Hung
  • Publication number: 20090034322
    Abstract: A magnetic random access memory includes at least a first-direction write current line and multiple second-direction write current line, intersecting with the first-direction write current line in substantial perpendicular and forming several intersecting regions. Multiple magnetic memory cells are respectively located at the intersecting regions for receiving an induced magnetic field in a time sequence. Every at least two adjacent memory cells are in parallel or series connection, to form at least one memory unit. An easy axis of a free layer of each magnetic memory cell is substantially perpendicular to a magnetization of a pinned layer. The easy axis and the first-direction write current line form an including angle of about 45°. A read bit-line circuit connects to a first terminal of the memory unit. A read word-line circuit connects to a second terminal of the memory unit.
    Type: Application
    Filed: November 27, 2007
    Publication date: February 5, 2009
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Chien-Chung Hung, Ming-Jer Kao, Ding-Yeong Wang, Yuan-Jen Lee
  • Publication number: 20090010088
    Abstract: A data reading circuit of a magnetic memory applicable for reading data of a magnetic memory includes a first transistor, a second transistor connected to the first transistor in series, a third transistor, a fourth transistor connected to the third transistor in series, a first transmission gate electrically connected to the first transistor, a second transmission gate electrically connected to the first and third transistors, a comparison circuit having two input ends respectively connected to the first transistor, and a storage capacitor having an end electrically connected to the first transistor and the other end connected to a power end.
    Type: Application
    Filed: December 28, 2007
    Publication date: January 8, 2009
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Young-Shying CHEN, Ding-Yeong WANG
  • Publication number: 20080247096
    Abstract: A magnetic memory including a stack, a first writing wire, and a second writing wire is provided. The stack includes a magnetic pinned layer, a tunnel barrier insulating layer, and a magnetic free layer, so as to form a magnetic tunnel junction (MTJ). The MTJ has an easy axis. The first writing wire is disposed under the stack. The included angle between the first writing wire and the easy axis of the MTJ is smaller than 45 degrees and greater than 0 degrees on a projected plane. The second writing wire is disposed above the stack. The included angle between the second writing wire and the easy axis of the MTJ is smaller than 45 degrees and greater than 0 degrees on the projected plane.
    Type: Application
    Filed: May 29, 2007
    Publication date: October 9, 2008
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Yuan-Jen Lee, Ding-Yeong Wang, Chien-Chung Hung