Patents by Inventor Wei-Chuan Chen

Wei-Chuan Chen 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: 20110001203
    Abstract: A magnetic memory element includes a pinned layer, a tunneling barrier layer, a free layer and a stabilizing layer. The tunneling barrier layer is disposed on the pinned layer. The free layer is disposed on the tunneling barrier layer. The stabilizing layer is disposed on the free layer.
    Type: Application
    Filed: September 16, 2010
    Publication date: January 6, 2011
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Wei-Chuan Chen, Cheng-Tyng Yen, Ding-Yeong Wang
  • Patent number: 7852664
    Abstract: A magnetic memory cell structure with thermal assistant includes a magnetic pinned layer, a barrier layer, a magnetic free layer, a perpendicular magnetic layer, and a heating layer sequentially stacked. The magnetic free layer has a longitudinal magnetization. The perpendicular magnetic layer has a perpendicular magnetization at a first temperature and is perpendicularly coupling to the longitudinal magnetization of the magnetic free layer. The perpendicular magnetic layer is in a paramagnetic state at a second temperature. The present invention further includes magnetic dynamic random access memory.
    Type: Grant
    Filed: August 11, 2008
    Date of Patent: December 14, 2010
    Assignee: Industrial Technology Research Institute
    Inventor: Wei-Chuan Chen
  • Patent number: 7829964
    Abstract: A magnetic memory element utilizing spin transfer switching includes a pinned layer, a tunneling barrier layer and a free layer structure. The tunneling barrier layer is disposed on the pinned layer. The free layer structure includes a composite free layer. The composite free layer includes a first free layer, an insert layer and a second free layer. The first free layer is disposed on the tunneling barrier layer and has a first spin polarization factor and a first saturation magnetization. The insert layer is disposed on the first free layer. The second free layer is disposed on the insert layer and has a second spin polarization factor smaller than the first spin polarization factor and a second saturation magnetization smaller than the first saturation magnetization. Magnetization vectors of the first free layer and the second free layer are arranged as parallel-coupled.
    Type: Grant
    Filed: March 5, 2009
    Date of Patent: November 9, 2010
    Assignee: Industrial Technology Research Institute
    Inventors: Wei-Chuan Chen, Cheng-Tyng Yen, Ding-Yeong Wang
  • Publication number: 20100109109
    Abstract: A magnetic memory element utilizing spin transfer switching includes a pinned layer, a tunneling barrier layer and a free layer structure. The tunneling barrier layer is disposed on the pinned layer. The free layer structure includes a composite free layer. The composite free layer includes a first free layer, an insert layer and a second free layer. The first free layer is disposed on the tunneling barrier layer and has a first spin polarization factor and a first saturation magnetization. The insert layer is disposed on the first free layer. The second free layer is disposed on the insert layer and has a second spin polarization factor smaller than the first spin polarization factor and a second saturation magnetization smaller than the first saturation magnetization. Magnetization vectors of the first free layer and the second free layer are arranged as parallel-coupled.
    Type: Application
    Filed: March 5, 2009
    Publication date: May 6, 2010
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Wei-Chuan Chen, Cheng-Tyng Yen, Ding-Yeong Wang
  • Publication number: 20090321792
    Abstract: A separative extended gate field effect transistor based uric acid sensing device is provided, including: a substrate; a conductive layer including a silver paste layer on the substrate and a graphite-based paste layer on the silver paste layer; a conductive wire extended from the conductive layer; a titanium dioxide layer on the conductive layer; and a uric acid enzyme sensing film on the titanium dioxide layer.
    Type: Application
    Filed: March 25, 2009
    Publication date: December 31, 2009
    Applicant: NATIONAL YUNLIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Jung-Chuan CHOU, Chih-Yu LIN, Wei-Chuan CHEN, Cheng-Wei CHEN
  • Patent number: 7606063
    Abstract: A magnetic memory device includes a substrate, a magnetic tunneling junction (MTJ) structure disposed on the substrate, and a capping layer disposed on the MTJ structure. By adding a capping layer on the MTJ structure, the property of the magnetic memory device is improved, the magnetoresistance (MR) ratio is raised, and the time cost by the magnetic memory device to process data is effectively reduced.
    Type: Grant
    Filed: June 18, 2007
    Date of Patent: October 20, 2009
    Assignee: Industrial Technology Research Institute
    Inventors: Chih-Ta Shen, Yung-Hung Wang, Cheng-Tying Yen, Kuei-Hung Shen, Wei-Chuan Chen, Shan-Yi Yang
  • Patent number: 7583529
    Abstract: A magnetic random access memory (MRAM) is disclosed. The MRAM includes a first electrode, an antiferromagnetic layer formed over the first electrode, a pinned layer formed over the antiferromagnetic layer, a barrier layer formed over the pinned layer, a composite free layer formed over the barrier layer, and a second electrode formed over the composite free layer. The composite free layer includes a first magnetic layer, a spacer layer and a second magnetic layer sequentially stacked over the barrier layer and the spacer layer allows parallel coupling between the first and second magnetic layers. A magnetic tunnel junction (MTJ) device suitable for a memory unit of a magnetic memory device is also provided.
    Type: Grant
    Filed: February 16, 2007
    Date of Patent: September 1, 2009
    Assignee: Industrial Technology Research Institute
    Inventors: Wei-Chuan Chen, Yung-Hung Wang, Shan-Yi Yang, Kuei-Hung Shen
  • Publication number: 20090210146
    Abstract: A method for generating an itinerary to be implemented by a system includes: enabling the system to determine a route that starts at a departure point and that ends at a destination point with reference to an electronic route-providing source; enabling the system to determine at least one candidate place-of-interest located in the vicinity of the route with reference to an electronic place-of-interest providing source; and enabling the system to generate an itinerary that departs from the departure point and that arrives at the destination point via the route. The system includes the candidate place-of-interest as a to-be-visited place-of-interest into the itinerary based on an estimated travel time associated with the route, a duration of stay associated with the to-be-visited place-of-interest already included in the itinerary, and a duration of stay associated with the candidate place-of-interest. A system that performs the method is also disclosed.
    Type: Application
    Filed: February 17, 2009
    Publication date: August 20, 2009
    Inventor: Wei-Chuan Chen
  • Publication number: 20090147567
    Abstract: A magnetic memory cell structure with thermal assistant includes a magnetic pinned layer, a barrier layer, a magnetic free layer, a perpendicular magnetic layer, and a heating layer sequentially stacked. The magnetic free layer has a longitudinal magnetization. The perpendicular magnetic layer has a perpendicular magnetization at a first temperature and is perpendicularly coupling to the longitudinal magnetization of the magnetic free layer. The perpendicular magnetic layer is in a paramagnetic state at a second temperature. The present invention further includes magnetic dynamic random access memory.
    Type: Application
    Filed: August 11, 2008
    Publication date: June 11, 2009
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventor: Wei-Chuan Chen
  • Publication number: 20090032891
    Abstract: A structure of magnetic random access memory includes a magnetic memory cell formed on a substrate. An insulating layer covers over the substrate and the magnetic memory cell. A write current line is in the insulating layer and above the magnetic memory cell. A magnetic cladding layer surrounds the periphery of the write current line. The magnetic cladding layer includes a first region surrounding the top of the write current line, and a second region surrounding the side edge of the write current line, and extending towards the magnetic memory cell and exceed by a distance.
    Type: Application
    Filed: December 12, 2007
    Publication date: February 5, 2009
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Cheng-Tyng Yen, Wei-Chuan Chen, Yung-Hsiang Chen, Yung-Hung Wang
  • Publication number: 20090016156
    Abstract: A mixer compound structure includes a body and one or a plurality of molded layer; the body contains multiple components; at least one molded layer is given a style or thickness as designed to reduce consumption of the principal material for reducing production cost; the molded mixer is further coated with a surface layer to deliver specific appearance as desired by using surface treatment method to deliver an attractive appearance for the mixer as a whole.
    Type: Application
    Filed: July 14, 2008
    Publication date: January 15, 2009
    Inventors: Shinn-Tyan WU, Wei-Chuan Chen
  • Publication number: 20080186758
    Abstract: A magnetic memory device includes a substrate, a magnetic tunneling junction (MTJ) structure disposed on the substrate, and a capping layer disposed on the MTJ structure. By adding a capping layer on the MTJ structure, the property of the magnetic memory device is improved, the magnetoresistance (MR) ratio is raised, and the time cost by the magnetic memory device to process data is effectively reduced.
    Type: Application
    Filed: June 18, 2007
    Publication date: August 7, 2008
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Chih-Ta SHEN, Yung-Hung WANG, Cheng-Tying YEN, Kuei-Hung SHEN, Wei-Chuan CHEN, Shan-Yi YANG
  • Publication number: 20080094888
    Abstract: A magnetic random access memory (MRAM) is disclosed. The MRAM includes a first electrode, an antiferromagnetic layer formed over the first electrode, a pinned layer formed over the antiferromagnetic layer, a barrier layer formed over the pinned layer, a composite free layer formed over the barrier layer, and a second electrode formed over the composite free layer. The composite free layer includes a first magnetic layer, a spacer layer and a second magnetic layer sequentially stacked over the barrier layer and the spacer layer allows parallel coupling between the first and second magnetic layers. A magnetic tunnel junction (MTJ) device suitable for a memory unit of a magnetic memory device is also provided.
    Type: Application
    Filed: February 16, 2007
    Publication date: April 24, 2008
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Wei-Chuan Chen, Yung-Hung Wang, Shan-Yi Yang, Kuei-Hung Shen
  • Publication number: 20080003701
    Abstract: A non-via method of connecting a magnetoelectric element with a conductive line is provided. A magnetoelectric element is formed on a substrate. Spacers are formed on side walls of the magnetoelectric element. A first dielectric layer is deposited over the substrate and the magnetoelectric element. The first dielectric layer is planarized to a level above the magnetoelectric element. A second dielectric layer is deposited over the first dielectric layer. The first and second dielectric layers are etched to form a trench, exposing an upper surface of the magnetoelectric element. A conductive material layer is filled into the trench to form a conductive line on the magnetoelectric element.
    Type: Application
    Filed: July 20, 2007
    Publication date: January 3, 2008
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Young-Shying Chen, Wei-Chuan Chen, Ming-Jer Kao
  • Publication number: 20070172964
    Abstract: A method of forming a self-aligned contact via for a MRAM is disclosed. A first conductive layer, a pinned layer, a tunneling barrier layer, a free layer, a capping layer and a first dielectric layer are formed sequentially over a substrate has formed lots of transistors and interconects. A portion of the first dielectric layer and the capping layer are removed until a surface of the free layer is exposed. A portion of the pinned layer, the tunneling barrier layer and the free layer are removed to form a MRAM device. A second dielectric layer is formed over the magnetic random access memory device. A planarization process is performed to form a planar surface of the second dielectric layer. The first dielectric layer and a portion of the second dielectric layer are removed to form a self-aligned contact opening. A second conductive layer is filled into the self-aligned contact opening.
    Type: Application
    Filed: May 24, 2006
    Publication date: July 26, 2007
    Inventors: Cheng-Tyng Yen, Wei-Chuan Chen, Kuei-Hung Shen
  • Publication number: 20070166839
    Abstract: A fabrication method of a magnetoresistance multi-layer is provided. The method includes forming a multi-layer with at least an antiferromagnetic layer and performing an ion irradiation process to the multi-layer to transform a disordered structure of the antiferromagnetic layer to an ordered structure. Accordingly, the process time can be reduced and the interdiffusion in the multi-layer can be prevented.
    Type: Application
    Filed: May 12, 2006
    Publication date: July 19, 2007
    Inventors: Chih-Huang Lai, Sheng-Huang Huang, Cheng-Han Yang, Yung-Hung Wang, Wei-Chuan Chen, Kuei-Hung Shen
  • Publication number: 20070164383
    Abstract: A magnetic memory with improved writing margin is provided, which includes a magnetic tunnel junction device and an adjustment layer. The magnetic tunnel junction device includes an anti-ferromagnetic layer, a pinned layer, a tunnel barrier layer, and a free layer formed sequentially. The adjustment layer is formed on one side of the magnetic tunnel junction device and contacts the free layer. The thickness of the adjustment layer is smaller than 20 nm and it employs Ru or Ru-base materials. The magnetic memory with improved writing margin may improve the switching uniformity and reduce the switching field of the free layer. Therefore, the current necessary for the write word line is reduced.
    Type: Application
    Filed: August 1, 2006
    Publication date: July 19, 2007
    Inventors: Wei-Chuan Chen, Yung-Hung Wang, Shan-Yi Yang, Kuei-Hung Shen
  • Patent number: 7208808
    Abstract: A magnetic random access memory with lower switching field is provided. The memory includes a first antiferromagnetic layer, a pinned layer formed on the first antiferromagnetic layer, a tunnel barrier layer formed on the pinned layer, a ferromagnetic free layer formed on the tunnel barrier layer, and a multi-layered metal layer. The multi-layered metal layer is formed by at least one metal layer, where the direction of the anisotropy axis of the antiferromagnetic layer and the ferromagnetic layer and that of the ferromagnetic free layer are arranged orthogonally. The provided memory has the advantage of lowering the switching field of the ferromagnetic layer, and further lowering the writing current.
    Type: Grant
    Filed: June 23, 2005
    Date of Patent: April 24, 2007
    Assignee: Industrial Technology Research Institute
    Inventors: Yuan-Jen Lee, Yung-Hsiang Chen, Wei-Chuan Chen, Ming-Jer Kao, Lien-Chang Wang
  • Publication number: 20060254650
    Abstract: A composite faucet includes a body coated with refractory material, the body directly contacting with water is made of metallic alloys; the body already coated with refractory material is further covered with a plastic material by injection for easier fabrication.
    Type: Application
    Filed: April 27, 2006
    Publication date: November 16, 2006
    Inventors: Shinn-Tyan Wu, Wei-Chuan Chen
  • Publication number: 20060148234
    Abstract: A non-via method of connecting a magnetoelectric element with a conductive line. A magnetoelectric element is formed on a substrate, and spacers are formed on side walls of the magnetoelectric element. A dielectric layer is deposited over the substrate and magnetoelectric element and planarized to a level above the magnetoelectric element. The dielectric layer is etched to expose the upper surface of the magnetoelectric element, and a conductive line is formed on the magnetoelectric element.
    Type: Application
    Filed: June 17, 2005
    Publication date: July 6, 2006
    Inventors: Young-shying Chen, Hong-Hui Hsu, Wei-Chuan Chen, Chun-Fei Chuang, Ming-Jer Kao