Patents by Inventor Jyh-Jier Ho

Jyh-Jier Ho 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).

  • Patent number: 7048603
    Abstract: A method for manufacturing organic light-emitting diodes (OLEDs) is disclosed, by adding nitrogen (N2) into the material of a hole transport layer (HTL) and evaporating the nitrogen and the material of the hole transport layer while growing the hole transport layer, so as to dope nitrogen molecules into the hole transport layer. In the hole transport layer, the nitrogen molecules are impurities of higher energy level, and are used to catch holes while the holes transports and trap the holes in the hole transport layer, thereby obtaining an object of improving the luminance efficiency of the organic light-emitting diodes with lower cost.
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: May 23, 2006
    Assignee: National Cheng Kung University
    Inventors: Yean-Kuen Fang, William Lee, Jyh-Jier Ho, Shyh-Fann Ting, Shih-Fang Chen, Hsin-Che Chiang
  • Publication number: 20050101218
    Abstract: A method for manufacturing organic light-emitting diodes (OLEDs) is disclosed, by adding nitrogen (N2) into the material of a hole transport layer (HTL) and evaporating the nitrogen and the material of the hole transport layer while growing the hole transport layer, so as to dope nitrogen molecules into the hole transport layer. In the hole transport layer, the nitrogen molecules are impurities of higher energy level, and are used to catch holes while the holes transports and trap the holes in the hole transport layer, thereby obtaining an object of improving the luminance efficiency of the organic light-emitting diodes with lower cost.
    Type: Application
    Filed: November 25, 2003
    Publication date: May 12, 2005
    Inventors: Yean-Kuen Fang, William Lee, Jyh-Jier Ho, Shyh-Fann Ting, Shih-Fang Chen, Hsin-Che Chiang
  • Patent number: 6877385
    Abstract: There is disclosed a semiconductor sensor for measuring the contact shear stress distribution between the socket of an above-knee (AK) prostheses and the soft tissue of an amputee's stump. The sensor is fabricated by the micro-electro-mechanical system (MEMS) technology, and its main sensing part is 2-X shaped with a flange structure. The sensor is prepared by anisotropic wet etching of bulk silicon in KOH solution and a square flange above the sensing diaphragm is formed through surface micromachining of deposited SiO2 thin film. This invention has the following characteristics: piezo-resistivity of the monolithic silicon will be utilized to convert shear deformation of the sensor into an electrical signal and a micro sensor which can measure the shear force vector acting on the sensing flange.
    Type: Grant
    Filed: October 22, 2001
    Date of Patent: April 12, 2005
    Assignee: National Science Council
    Inventors: Yean-Kuen Fang, Ming-Shanng Ju, Jyh-Jier Ho, Gin-Shin Chen, Ming-Chun Hsieh, Shyh-Fann Ting, Chung-Hsien Yang
  • Publication number: 20020174727
    Abstract: In this invention, a contact type micro piezoresistive shear-stress sensor is fabricated by the micro-electro-mechanical (MEMS) technology, and its main sensing part is a 2-X shaped with a flange structure, for measuring the shear stress distribution between socket of above-knee (AK) prostheses and the soft tissue of amputee's stump. Comparing with a conventional shear stress sensor, this invention owns the following characteristics: piezo-resistivity of the monolithic silicon will be utilized to convert shear deformation of the sensor into electrical signal and a micro sensor which can measure the shear force vector acting the sensing flange.
    Type: Application
    Filed: October 22, 2001
    Publication date: November 28, 2002
    Inventors: Yean-Kuen Fang, Ming-Shanng Ju, Jyh-Jier Ho, Gin-Shin Chen, Ming-Chun Hsieh, Shyh-Fann Ting, Chung-Hsien Yang
  • Patent number: 6046066
    Abstract: The present invention relates to a new process of the cantilever structure in the micro-electro-mechanical system (MEMS), and more particularly, to a process that could overcome the contamination problem on the undesired areas during the thin-film growth. Their advantages include not only to substitute the complex technique with sacrificial layer, but also to increase the yield for its simple structure and to deal the sub-micron microelectromechanical system technology for the mature stage on the wet-etching skill.
    Type: Grant
    Filed: March 10, 1998
    Date of Patent: April 4, 2000
    Assignee: National Science Council of Rep. of China
    Inventors: Yean-Kuen Fang, Jyh-Jier Ho, Chiun-Wei Chu