Patents by Inventor Koungmin Ryu

Koungmin Ryu 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: 20110017975
    Abstract: An electrode for use in an organic optoelectronic device is provided. The electrode includes a thin film of single-wall carbon nanotubes. The film may be deposited on a substrate of the device by using an elastomeric stamp. The film may be enhanced by spin-coating a smoothing layer on the film and/or doping the film to enhance conductivity. Electrodes according to the present invention may have conductivities, transparencies, and other features comparable to other materials typically used as electrodes in optoelectronic devices.
    Type: Application
    Filed: October 5, 2010
    Publication date: January 27, 2011
    Applicant: The University of Southern California
    Inventors: Daihua ZHANG, Koungmin RYU, Xiaolei LIU, Evgueni POLIKARPOV, James LY, Mark E. THOMPSON, Chongwu ZHOU, Cody SCHLENKER
  • Patent number: 7834545
    Abstract: An electrode for use in an organic optoelectronic device is provided. The electrode includes a thin film of single-wall carbon nanotubes. The film may be deposited on a substrate of the device by using an elastomeric stamp. The film may be enhanced by spin-coating a smoothing layer on the film and/or doping the film to enhance conductivity. Electrodes according to the present invention may have conductivities, transparencies, and other features comparable to other materials typically used as electrodes in optoelectronic devices.
    Type: Grant
    Filed: July 18, 2007
    Date of Patent: November 16, 2010
    Assignee: The University of Southern California
    Inventors: Daihua Zhang, Koungmin Ryu, Xiaolei Liu, Evgueni Polikarpov, James Ly, Mark E. Thompson, Chongwu Zhou, Cody Schlenker
  • Publication number: 20100133511
    Abstract: Techniques, apparatus and systems are described for wafer-scale processing of aligned nanotube devices and integrated circuits. In one aspect, a method can include growing aligned nanotubes on at least one of a wafer-scale quartz substrate or a wafer-scale sapphire substrate. The method can include transferring the grown aligned nanotubes onto a target substrate. Also, the method can include fabricating at least one device based on the transferred nanotubes.
    Type: Application
    Filed: November 24, 2009
    Publication date: June 3, 2010
    Inventors: Chongwu Zhou, Koungmin Ryu, Alexander Badmaev, Chuan Wang
  • Publication number: 20100127242
    Abstract: Methods and devices for transparent electronics are disclosed. According to an embodiment, transparent electronics are provided based on transfer printed carbon nanotubes that can be disposed on both rigid and flexible substrates. Methods are provided to enable highly aligned single-walled carbon nanotubes (SWNTs) to be used in transparent electronics for achieving high carrier mobility while using low-temperature processing. According to one method, highly aligned nanotubes can be grown on a first substrate. Then, the aligned nanotubes can be transferred to a rigid or flexible substrate having pre-patterned gate electrodes. Source and drain electrodes can be formed on the transferred nanotubes. The subject devices can be integrated to provide logic gates and analog circuitry for a variety of applications.
    Type: Application
    Filed: August 10, 2009
    Publication date: May 27, 2010
    Inventors: CHONGWU ZHOU, Fumiaki Ishikawa, Hsiao-Kang Chang, Koungmin Ryu
  • Publication number: 20080018232
    Abstract: An electrode for use in an organic optoelectronic device is provided. The electrode includes a thin film of single-wall carbon nanotubes. The film may be deposited on a substrate of the device by using an elastomeric stamp. The film may be enhanced by spin-coating a smoothing layer on the film and/or doping the film to enhance conductivity. Electrodes according to the present invention may have conductivities, transparencies, and other features comparable to other materials typically used as electrodes in optoelectronic devices.
    Type: Application
    Filed: July 18, 2007
    Publication date: January 24, 2008
    Inventors: Daihua Zhang, Koungmin Ryu, Xiaolei Liu, Evgueni Polikarpov, James Ly, Mark Thompson, Chongwu Zhou, Cody Schlenker