Patents by Inventor Long Zhen Qiu

Long Zhen Qiu 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).

  • Method of manufacturing organic semiconductor nanofibrillar network dispersed in insulating polymer using a blend of organic semiconductor/insulating polymer and organic thin film transistor using the same
    Patent number: 8692236
    Abstract: Disclosed is a method of manufacturing an organic semiconductor thin film for an organic thin film transistor from a blend of organic semiconductor/insulating polymer. The organic semiconductor thin film is configured such that organic semiconductor nanofibrils are dispersed in the form of a network in the insulating polymer layer. This organic semiconductor thin film is formed by dissolving the blend of organic semiconductor/insulating polymer in a marginal solvent of the organic semiconductor or mixed solvent thus preparing a blend solution, which is then applied while adjusting the solubility of the solution. An organic thin film transistor using the organic semiconductor thin film is also provided. The blend thin film of organic semiconductor/insulating polymer containing only about 3 wt % of the organic semiconductor exhibits electrical properties equal to those of a thin film composed exclusively of an organic semiconductor.
    Type: Grant
    Filed: April 13, 2009
    Date of Patent: April 8, 2014
    Assignee: Postech Academy-Industry Foundation
    Inventors: Kil Won Cho, Long Zhen Qiu, Wi Hyoung Lee
  • METHOD OF MANUFACTURING ORGANIC SEMICONDUCTOR NANOFIBRILLAR NETWORK DISPERSED IN INSULATING POLYMER USING A BLEND OF ORGANIC SEMICONDUCTOR/INSULATING POLYMER AND ORGANIC THIN FILM TRANSISTOR USING THE SAME
    Publication number: 20120018708
    Abstract: Disclosed is a method of manufacturing an organic semiconductor thin film for an organic thin film transistor from a blend of organic semiconductor/insulating polymer. The organic semiconductor thin film is configured such that organic semiconductor nanofibrils are dispersed in the form of a network in the insulating polymer layer. This organic semiconductor thin film is formed by dissolving the blend of organic semiconductor/insulating polymer in a marginal solvent of the organic semiconductor or mixed solvent thus preparing a blend solution, which is then applied while adjusting the solubility of the solution. An organic thin film transistor using the organic semiconductor thin film is also provided. The blend thin film of organic semiconductor/insulating polymer containing only about 3 wt % of the organic semiconductor exhibits electrical properties equal to those of a thin film composed exclusively of an organic semiconductor.
    Type: Application
    Filed: April 13, 2009
    Publication date: January 26, 2012
    Applicant: Postech Academy-Industry Foundation
    Inventors: Kil Won Cho, Long Zhen Qiu, Wi Hyoung Lee