Patents by Inventor Cheng-Han Yang

Cheng-Han Yang 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: 20150105843
    Abstract: The present invention relates inter alia to a new class of heteroleptic metal complexes comprising condensed aromatic heterocyclic rings, their preparation and use.
    Type: Application
    Filed: April 26, 2013
    Publication date: April 16, 2015
    Inventors: Susanne Heun, Nils Koenen, Cheng-Han Yang, Luisa De Cola
  • Patent number: 8984740
    Abstract: A method for providing a magnetic recording transducer is provided. The method includes providing a substrate, and a magnetic shield having a top surface above the substrate. The top surface is treated by a first plasma treatment performed at a first power. An amorphous ferromagnetic (FM) layer is deposited on and in contact with the top surface to a thickness of at least 5 Angstroms and not more than 50 Angstroms. A second plasma treatment is performed at a second power. A magnetic seed layer is provided on and contact with the amorphous FM layer. The magnetic seed layer may comprise a bilayer. A nonmagnetic spacer layer is provided above the magnetic seed layer, an antiferromagnetic (AFM) layer provided above the spacer layer, and a read sensor provided above the AFM layer.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: March 24, 2015
    Assignee: Western Digital (Fremont), LLC
    Inventors: Yuankai Zheng, Qunwen Leng, Cheng-Han Yang, Zhitao Diao
  • Publication number: 20140364006
    Abstract: An electrical connector includes a body, two rows of terminals, and a grounding sheet. The body has a base and a tongue extending forwards from the base. The two rows of terminals are disposed in the tongue. At least one row of terminals includes a differential signal terminal pair and a grounding terminal that are disposed neighboring to each other. The grounding sheet is disposed in the tongue and located between the two rows of terminals. The grounding sheet has an open slot located between the differential signal terminal pair and the grounding terminal that are in the same row.
    Type: Application
    Filed: May 13, 2014
    Publication date: December 11, 2014
    Applicant: Lintes Technology Co., Ltd
    Inventors: Wei Zen Lo, Shih Chi Kuan, Cheng Han Yang
  • Patent number: 8582253
    Abstract: A magnetic sensor configured to reside in proximity to a recording medium during use having a high spin polarization reference layer stack above AFM layers. The reference layer stack comprises a first boron-free ferromagnetic layer above the AFM coupling layer; a magnetic coupling layer on and in contact with the first boron-free ferromagnetic layer; a second ferromagnetic layer comprising boron deposited on and contact with the magnetic coupling layer; and a boron-free third ferromagnetic layer on and in contact the second ferromagnetic layer. A barrier layer is deposited on and in contact with the boron-free third ferromagnetic layer. In one aspect of the invention, the magnetic coupling layer may comprise at least one of Ta, Ti, or Hf. A process for providing the magnetic sensor is also provided.
    Type: Grant
    Filed: June 4, 2012
    Date of Patent: November 12, 2013
    Assignee: Western Digital (Fremont), LLC
    Inventors: Yuankai Zheng, Qunwen Leng, Mahendra Pakala, Zhitao Diao, Christian Kaiser, Cheng-Han Yang
  • Patent number: 8493693
    Abstract: A magnetic sensor is configured to reside in proximity to a recording medium during use. The sensor includes a magnetic top shield and a magnetic bottom shield. A top sensor stack is under the magnetic top shield and includes magnetic sensing layers. A bottom sensor stack is between the magnetic bottom shield and the top sensor stack. The bottom sensor stack includes a magnetic seed stack above the bottom shield, an insertion stack above the magnetic seed stack, and an antiferromagnetic (AFM) layer on and in contact with the insertion stack. A pinned layer is above the AFM layer. An AFM coupling layer is above the pinned layer. In some aspects the insertion stack may include at least one of Ti, Hf, Zr, and Ta. In some aspect, the insertion stack includes a layer of elemental Ti. In other aspects, the insertion stack includes multilayer structures.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: July 23, 2013
    Assignee: Western Digital (Fremont), LLC
    Inventors: Yuankai Zheng, Qunwen Leng, Mahendra Pakala, Cheng-Han Yang
  • Publication number: 20120298171
    Abstract: A solar cell including a photoelectric conversion layer, a back electrode, a plurality of conductive fingers parallel to each other, at least one bus bar and at least one connection ribbon is provided. The photoelectric conversion layer has a front surface and a back surface. The back electrode is disposed on the back surface of the photoelectric conversion layer. The conductive fingers are disposed on the front surface of the photoelectric conversion layer. The at least one bus bar is disposed on the front surface of the photoelectric conversion layer and is electrically connected to the conductive fingers. The connection ribbon covers the bus bar and is electrically connected to the bus bar, wherein the bus bar covered by a single connection ribbon has a discontinuous pattern.
    Type: Application
    Filed: May 14, 2012
    Publication date: November 29, 2012
    Applicant: AU OPTRONICS CORPORATION
    Inventors: Chiu-Hua Huang, Cheng-Han Yang, De-Chih Liu, Yu-Chun Chen, Ming-Yuan Huang, Yi-Chia Chen
  • Patent number: 8227896
    Abstract: Nitrogen-doped MgO insulating layers exhibit voltage controlled resistance states, e.g., a high resistance and a low resistance state. Patterned nano-devices on the 100 nm scale show highly reproducible switching characteristics. The voltage levels at which such devices are switched between the two resistance levels can be systematically lowered by increasing the nitrogen concentration. Similarly, the resistance of the high resistance state can be varied by varying the nitrogen concentration, and decreases by orders of magnitude by varying the nitrogen concentrations by a few percent. On the other hand, the resistance of the low resistance state is nearly insensitive to the nitrogen doping level. The resistance of single Mg50O50-xNx layer devices can be varied over a wide range by limiting the current that can be passed during the SET process. Associated data storage devices can be constructed.
    Type: Grant
    Filed: December 11, 2009
    Date of Patent: July 24, 2012
    Assignee: International Business Machines Corporation
    Inventors: Xin Jiang, Stuart Stephen Papworth Parkin, Mahesh Govind Samant, Cheng-Han Yang
  • Publication number: 20120169213
    Abstract: A phosphorescent metal complex may include at least one metallic central atom M; and at least one ligand coordinated by the metallic central atom, wherein one ligand is bidentate with two uncharged coordination sites and comprises at least one carbene unit coordinated directly to the metal atom.
    Type: Application
    Filed: May 5, 2010
    Publication date: July 5, 2012
    Applicant: OSRAM AG
    Inventors: Luisa De Cola, David Hartmann, Wiebke Sarfert, Günter Schmid, Sabine Szyszkowski, Cheng-Han Yang
  • Publication number: 20110140762
    Abstract: Nitrogen-doped MgO insulating layers exhibit voltage controlled resistance states, e.g., a high resistance and a low resistance state. Patterned nano-devices on the 100 nm scale show highly reproducible switching characteristics. The voltage levels at which such devices are switched between the two resistance levels can be systematically lowered by increasing the nitrogen concentration. Similarly, the resistance of the high resistance state can be varied by varying the nitrogen concentration, and decreases by orders of magnitude by varying the nitrogen concentrations by a few percent. On the other hand, the resistance of the low resistance state is nearly insensitive to the nitrogen doping level. The resistance of single Mg50O50-xNx layer devices can be varied over a wide range by limiting the current that can be passed during the SET process. Associated data storage devices can be constructed.
    Type: Application
    Filed: December 11, 2009
    Publication date: June 16, 2011
    Applicant: International Business Machines Corporation
    Inventors: Xin Jiang, Stuart Stephen Papworth Parkin, Mahesh Govind Samant, Cheng-Han Yang
  • Patent number: 7915414
    Abstract: The present invention discloses organometallic complexes with transition metal elements and their application in fabrication of a variety of light-emitting devices. The mentioned organometallic complexes can serve as emitting material or dopant for blue phosphorescent organic light-emitting devices with excellent performance. The mentioned organometallic complexes have a general formula as the following: Wherein M represents a transition metal element, and Q1 and Q2 respectively represent an atomic group forming a nitrogen-containing heterocyclic ring as a five member ring, a six member ring, or a seven member ring.
    Type: Grant
    Filed: November 1, 2007
    Date of Patent: March 29, 2011
    Inventors: Yun Chi, Cheng-Han Yang, Pi-Tai Chou, Chung-Chih Wu, Chih-Hao Chang
  • Publication number: 20080125591
    Abstract: The present invention discloses organometallic complexes with transition metal elements and their application in fabrication of a variety of light-emitting devices. The mentioned organometallic complexes can serve as emitting material or dopant for blue phosphorescent organic light-emitting devices with excellent performance. The mentioned organometallic complexes have a general formula as the following: Wherein M represents a transition metal element, and Q1 and Q2 respectively represent an atomic group forming a nitrogen-containing heterocyclic ring as a five member ring, a six member ring, or a seven member ring.
    Type: Application
    Filed: November 1, 2007
    Publication date: May 29, 2008
    Inventors: Yun Chi, Cheng-Han Yang, Pi-Tai Chou, Chung-Chih Wu, Chih-Hao Chang
  • Patent number: 7328152
    Abstract: A fast bit allocation algorithm for audio coding is disclosed. A virtual Huffman codebook model is referred in a trellis-based optimization approach to obtain a set of optimized scale factors, and then the set of optimized scale factors is referred in a trellis-based optimization approach to obtain a set of optimized Huffman codebooks. Therefore, the present invention can significantly reduce the amount of computation for the bit allocation. Further, according to the experimental data, the present invention can keep almost the same compression efficiency as the prior art JTB optimization. Hence, the present invention is more suitable for practical applications.
    Type: Grant
    Filed: June 28, 2004
    Date of Patent: February 5, 2008
    Assignee: National Chiao Tung University
    Inventors: Cheng-Han Yang, Hsueh-Ming Hang
  • 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: 20050228658
    Abstract: A fast bit allocation algorithm for audio coding is disclosed. A virtual Huffman codebook model is referred in a trellis-based optimization approach to obtain a set of optimized scale factors, and then the set of optimized scale factors is referred in a trellis-based optimization approach to obtain a set of optimized Huffman codebooks. Therefore, the present invention can significantly reduce the amount of computation for the bit allocation. Further, according to the experimental data, the present invention can keep almost the same compression efficiency as the prior art JTB optimization. Hence, the present invention is more suitable for practical applications.
    Type: Application
    Filed: June 28, 2004
    Publication date: October 13, 2005
    Inventors: Cheng-Han Yang, Hsueh-Ming Hang