Patents by Inventor Chang-Hong Liu

Chang-Hong Liu 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).

  • Solar thermoelectric cell with covering structure to provide thermal gradient
    Patent number: 8987581
    Abstract: A photoelectric cell includes at least one photoelectric conversion module. The photoelectric module includes a first photoelectric conversion element and a second photoelectric conversion element. The first photoelectric conversion element is made of a first thermoelectric material having positive thermoelectric coefficient and comprises a first absorbing part and a first non-absorbing part. The second photoelectric conversion element is made of a second thermoelectric material having negative thermoelectric coefficient and comprises a second absorbing part and a second non-absorbing part. The first absorbing part is electrically connected with the second absorbing part.
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: March 24, 2015
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Chun-Hua Hu, Chang-Hong Liu, Shou-Shan Fan
  • INFRARED DETECTOR
    Publication number: 20150060769
    Abstract: An infrared detector includes a detecting element, a first electrode and a second electrode. The detecting element includes an absorbing part and a non-absorbing part. A first end is located in the absorbing part. A second end is located in the non-absorbing part. An angle between the absorbing part and the non-absorbing part is less than 90 degrees. A first electrode is electrically connected with the first end. A second electrode is electrically connected with the second end.
    Type: Application
    Filed: October 22, 2014
    Publication date: March 5, 2015
    Inventors: CHUN-HUA HU, CHANG-HONG LIU, SHOU-SHAN FAN
  • METHOD FOR MANUFACTURING CARBON NANOTUBE FILM
    Publication number: 20150023864
    Abstract: A method for manufacturing a large-area carbon nanotube film is provided. A helical-shaped substrate having a smoothly curved surface configured for growing carbon nanotube film thereon is provided. The helical-shaped substrate is fixed in a reactor chamber using a supporter. The helical-shaped substrate gradually increases along an axis of the reactor chamber, and the supporter is substantially perpendicular to the axis of the reactor chamber. A catalyst layer is formed on the smoothly curved surface of the substrate. A carbon nanotube film is grown on the smoothly curved surface of the helical-shaped substrate by a chemical vapor deposition process.
    Type: Application
    Filed: September 29, 2014
    Publication date: January 22, 2015
    Inventors: CHANG-HONG LIU, SHOU-SHAN FAN
  • Heat-dissipation structure and electronic device using the same
    Patent number: 8929076
    Abstract: A heat-dissipation structure includes a first carbon nanotube layer and a metal mesh layer. The first carbon nanotube layer and the metal mesh layer are stacked on each other. The first carbon nanotube layer includes at least one first carbon nanotube paper. An electronic device applying the heat-dissipation structure is also disclosed.
    Type: Grant
    Filed: August 20, 2012
    Date of Patent: January 6, 2015
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Ling Zhang, Chang-Hong Liu, Shou-Shan Fan
  • Method for using a poisson ratio material
    Patent number: 8916081
    Abstract: A method for using a Poisson's ratio material includes a carbon nanotube film structure is provided. The carbon nanotube film structure includes a plurality of carbon nanotubes. A first part of the carbon nanotubes are aligned a first direction, a second part of the carbon nanotubes are aligned a second direction. The first direction is substantially perpendicular to second direction. When the Poisson's ratio material is stretched or compressed substantially along the first or second direction, a Poisson's ratio value is negative.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: December 23, 2014
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Lu-Zhuo Chen, Chang-Hong Liu, Jia-Ping Wang, Shou-Shan Fan
  • Apparatus for manufacturing carbon nanotube heat sink
    Patent number: 8900541
    Abstract: An apparatus for manufacturing a carbon nanotube heat sink includes a board, and a number of first and second carbon nanotubes formed on the board. The first carbon nanotubes and the second nanotubes are grown along a substantially same direction from the board. A height difference exists between a common free end of the first carbon nanotubes and a common free end of the second carbon nanotubes.
    Type: Grant
    Filed: October 9, 2012
    Date of Patent: December 2, 2014
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Yuan Yao, Feng-Wei Dai, Kai-Li Jiang, Chang-Hong Liu, Liang Liu
  • Apparatus and method for manufacturing large-area carbon nanotube films
    Patent number: 8900367
    Abstract: An apparatus for manufacturing a large-area carbon nanotube film is provided. The apparatus includes a reactor chamber, a substrate having a curved, three-dimensional surface and a supporter received in the reactor chamber. The curved, three-dimensional curve surface of the substrate is provided for growing the carbon nanotube film thereon. The supporter is provided for fixing the substrate in the reactor chamber. The present invention also provides a method for manufacturing a large-area carbon nanotube film employing this apparatus.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: December 2, 2014
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Chang-Hong Liu, Shou-Shan Fan
  • METHOD FOR MAKING A CARBON NANOTUBE FILM
    Publication number: 20140299819
    Abstract: A method for making a carbon nanotube film includes the steps of: (a) adding a plurality of carbon nanotubes into a solvent containing metallic ions, and flocculating the carbon nanotubes to get a floccule structure with the metallic ions therein; (b) reducing the metallic ions into metallic atoms, thereby the metallic atoms being attached onto outer surfaces of the carbon nanotubes to form a floccule structure of carbon nanotubes compounded with metal atoms; and (c) separating the floccule structure compounded with metal atoms from the solvent; and (d) shaping the floccule structure compounded with metal atoms to obtain/get the carbon nanotube film.
    Type: Application
    Filed: December 20, 2007
    Publication date: October 9, 2014
    Applicants: HON HAI Precision Industry CO., LTD., Tsinghua University
    Inventors: Ding Wang, Peng-Cheng Song, Chang-Hong Liu, Shou-Shan Fan
  • Thermal conductivity measurement apparatus for one-dimensional material
    Patent number: 8851747
    Abstract: A thermal conductivity measurement apparatus for measuring a thermal conductivity of a one-dimensional material includes a substrate, a vacuum chamber receiving the substrate and four spaced electrodes. The one-dimensional material spans across the four spaced electrodes. A middle part of the one-dimensional material, located between the second and third electrodes, is suspended.
    Type: Grant
    Filed: April 25, 2013
    Date of Patent: October 7, 2014
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Qing-Wei Li, Chang-Hong Liu, Shou-Shan Fan
  • Carbon nanotube based electrostrictive element
    Patent number: 8853917
    Abstract: An carbon nanotube based electrostrictive element includes two electrostrictive layers spaced with each other, an electrical connector, and two electrodes. The two electrostrictive layers are electrically connected to each other at a first side, and spaced and insulated from each other at a second side via the electrical connector. The two electrodes are located at the second side and electrically connected respectively to the two electrostrictive layers.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: October 7, 2014
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Chang-Hong Liu, Lu-Zhuo Chen, Shou-Shan Fan
  • Method for making a carbon nanotube film
    Patent number: 8846144
    Abstract: A method for making a carbon nanotube film includes the steps of: (a) adding a plurality of carbon nanotubes into a solvent containing metallic ions, and flocculating the carbon nanotubes to get a floccule structure with the metallic ions therein; (b) reducing the metallic ions into metallic atoms, thereby the metallic atoms being attached onto outer surfaces of the carbon nanotubes to form a floccule structure of carbon nanotubes compounded with metal atoms; and (c) separating the floccule structure compounded with metal atoms from the solvent; and (d) shaping the floccule structure compounded with metal atoms to obtain/get the carbon nanotube film.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: September 30, 2014
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Ding Wang, Peng-Cheng Song, Chang-Hong Liu, Shou-Shan Fan
  • Thermoelectric material and thermoelectric device
    Patent number: 8829327
    Abstract: A thermoelectric composite material includes a carbon nanotube structure and an electrically conductive polymer layer. The carbon nanotube structure includes a plurality of carbon nanotubes and spaces. The electrically conductive polymer layer is coated on surfaces of the carbon nanotubes.
    Type: Grant
    Filed: December 3, 2009
    Date of Patent: September 9, 2014
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Chui-Zhou Meng, Chang-Hong Liu, Shou-Shan Fan
  • METHOD FOR HEATING OBJECT USING SHEET-SHAPED HEAT AND LIGHT SOURCE
    Publication number: 20140231409
    Abstract: The present disclosure relates to a method for heating an object. A sheet-shaped heat and light source is provided. The sheet-shaped heat and light source includes a carbon nanotube film curved to form a hollow cylinder, and at least two electrodes spaced from each other, located on a surface of the hollow cylinder and electrically connected to the carbon nanotube film. An object is located in the hollow cylinder. A voltage is supplied between the at least two electrodes.
    Type: Application
    Filed: April 30, 2014
    Publication date: August 21, 2014
    Applicants: HON HAI PRECISION INDUSTRY CO., LTD., Tsinghua University
    Inventors: CHANG-HONG LIU, SHOU-SHAN FAN
  • Carbon nanotube composite, method for making the same, and electrochemical capacitor using the same
    Patent number: 8810995
    Abstract: An electrochemical capacitor includes a first electrode, a second electrode, a membrane, and an electrolyte. The first electrode includes a carbon nanotube composite. The carbon nanotube composite includes a free-standing carbon nanotube structure, and a plurality of nano grains located on the carbon nanotube structure. The membrane is located between the first electrode and the second electrode, to separate the first electrode from the second electrode. The first electrode, the second electrode, and the membrane are disposed in the electrolyte.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: August 19, 2014
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Rui-Feng Zhou, Chui-Zhou Meng, Kai Liu, Kai-Li Jiang, Chang-Hong Liu, Shou-Shan Fan
  • Method for making Schottky barrier diode
    Patent number: 8809107
    Abstract: A method for making a Schottky barrier diode includes the following steps. A first metal layer, a second metal layer and a carbon nanotube composite material are provided. The carbon nanotube composite material is applied on the first metal layer and the second metal layer to form a semiconductor layer. The carbon nanotube composite material includes an insulated polymer and a number of carbon nanotubes dispersed in the insulated polymer. The semiconductor layer is in Schottky contact with the first metal layer and in ohmic contact with the second metal layer.
    Type: Grant
    Filed: December 26, 2011
    Date of Patent: August 19, 2014
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Chun-Hua Hu, Chang-Hong Liu, Shou-Shan Fan
  • Method for making a carbon nanotube film
    Patent number: 8808589
    Abstract: A method for making a carbon nanotube film includes the steps of: (a) adding a plurality of carbon nanotubes to a solvent to create a carbon nanotube floccule structure in the solvent; (b) separating the carbon nanotube floccule structure from the solvent; and (c) shaping the separated carbon nanotube floccule structure to obtain the carbon nanotube film.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: August 19, 2014
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Ding Wang, Chang-Hong Liu, Shou-Shan Fan
  • Method for making sheet-shaped heat and light source
    Patent number: 8808049
    Abstract: The present disclosure relates to a method for making the sheet-shaped heat and light source. An array of carbon nanotubes on a substrate is provided. A carbon nanotube film is formed by pressing the array of carbon nanotubes. A first electrode and a second electrode are electrically connected with the carbon nanotube film. Furthermore, a method for heating an object is related.
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: August 19, 2014
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Chang-Hong Liu, Shou-Shan Fan
  • Method of using thermoelectric device
    Patent number: 8802964
    Abstract: A method using an apparatus includes the following steps. Providing a thermoelectric composite material, and establishing a sufficient temperature gradient in the thermoelectric composite material to create a voltage. The thermoelectric composite material includes a carbon nanotube structure comprising a plurality of carbon nanotubes and a plurality of spaces defined by and between the carbon nanotubes, and an electrically conductive polymer layer coated on the carbon nanotube structure.
    Type: Grant
    Filed: December 31, 2009
    Date of Patent: August 12, 2014
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Chui-Zhou Meng, Chang-Hong Liu, Shou-Shan Fan
  • Method for making a carbon nanotube film
    Publication number: 20140199855
    Abstract: A method for making a carbon nanotube film includes the steps of: (a) adding a plurality of carbon nanotubes to a solvent to create a carbon nanotube floccule structure in the solvent; (b) separating the carbon nanotube floccule structure from the solvent; and (c) shaping the separated carbon nanotube floccule structure to obtain the carbon nanotube film.
    Type: Application
    Filed: December 20, 2007
    Publication date: July 17, 2014
    Applicants: HON HAI Precision Industry CO., LTD., Tsinghua University
    Inventors: Ding Wang, Chang-Hong Liu, Shou-Shan Fan
  • METHOD FOR MAKING MEMBRANE ELECTRODE ASSEMBLY
    Publication number: 20140113219
    Abstract: The present invention relates to method for making a membrane electrode assembly. First, a carbon nanotube film is fabricated to act as a gas diffusion layer. Second, a catalyst layer is formed on the carbon nanotube film to obtain an electrode. Third, a proton exchange membrane is provided, and two electrodes are separately disposed on two opposite surfaces of the proton exchange membrane, thereby forming the membrane electrode assembly.
    Type: Application
    Filed: December 31, 2013
    Publication date: April 24, 2014
    Applicants: HON HAI PRECISION INDUSTRY CO., LTD., TSINGHUA UNIVERSITY
    Inventors: CHANG-HONG LIU, SHOU-SHAN FAN