Patents by Inventor Jungwei John Cheng

Jungwei John Cheng 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 sensing melt-front position and velocity
    Patent number: 7758780
    Abstract: A method of sensing melt-front position and velocity is applicable for injection-molding systems. Firstly, at least one actuation signal value of the melt-injection device of the injection-molding system is retrieved, and at least one state variable value of the injection-molding system is measured. Then, the retrieved actuation signal values and the measured state variable values are substituted into a plurality of simultaneous equations to calculate the melt-front position and velocity of the injection-molding system.
    Type: Grant
    Filed: July 18, 2008
    Date of Patent: July 20, 2010
    Assignee: National Chung Cheng University
    Inventors: Jungwei-John Cheng, Yu-Wei Lin, Tzu-Ching Chao, Bo-Fong Huang, Lih-Harng Chang
  • Method of fabricating organic light emitting diode array
    Patent number: 7662426
    Abstract: The present invention discloses a method of fabricating organic light emitting diode array, which adopts a directional spin coating technology to grow different organic light-emitting materials on the same plane so as to control the color of the emitted light and accomplish monochrome or full color organic light emitting diodes.
    Type: Grant
    Filed: December 16, 2005
    Date of Patent: February 16, 2010
    Assignee: National Chung Chen University
    Inventors: Jungwei John Cheng, Jeng-Rong Ho, Tzu-Yang Peng, Nan-Yi Wu, Chin Min Huang
  • METHOD OF SENSING MELT-FRONT POSITION AND VELOCITY
    Publication number: 20090045537
    Abstract: A method of sensing melt-front position and velocity is applicable for injection-molding systems. Firstly, at least one actuation signal value of the melt-injection device of the injection-molding system is retrieved, and at least one state variable value of the injection-molding system is measured. Then, the retrieved actuation signal values and the measured state variable values are substituted into a plurality of simultaneous equations to calculate the melt-front position and velocity of the injection-molding system.
    Type: Application
    Filed: July 18, 2008
    Publication date: February 19, 2009
    Applicant: NATIONAL CHUNG CHENG UNIVERSITY
    Inventors: Jungwei-John Cheng, Yu-Wei Lin, Tzu-Ching Chao, Bo-Fong Huang, Lih-Harng Chang
  • Method of fabricating carbon nanotube pattern
    Publication number: 20080169060
    Abstract: A method of fabricating carbon nanotube (CNT) pattern includes the following steps. First, one surface of a first transparent substrate is denoted as the first surface. A CNT thin film layer is coated on the first surface by a thin film deposition method. Then, a second substrate is disposed opposite to the first surface coated with a CNT thin film layer. By adopting a laser transfer method, a laser source irradiates on the CNT thin film layer coated on the fist surface, such that the CNT on the irradiated area explodes to depart from the first surface due to the high temperature resulted from the energy imparted by the laser light, so as to form a CNT pattern on the opposite second substrate.
    Type: Application
    Filed: July 30, 2007
    Publication date: July 17, 2008
    Inventors: Jeng-Rong Ho, Jungwei John Cheng, Cheng-Kuo Sung, Shiang-Kuo Chang-Jian