Patents by Inventor Li-Ching Ma

Li-Ching Ma 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: 6661032
    Abstract: A LED package structure having an electro-static protective diode, the structure is disclosed. The structure comprises: an electro-static protective diode having an n-type electrode mounted on a lampstand by a conductive paste layer, so that it forms an electrical connecting with a positive leadfame. A LED having a p-type and an n-type electrode positioned on one side and a bottom on the other side of the LED mounted by an insulating layer atop the p-type electrode of the electro-static protective diode. Next a first conductive wire connects between the p-type electrode of the LED and the positive leadframe. A second conductive wire, connects the n-type electrode of the LED with the negative leadframe. A third conductive wire connects the p-type electrode of the electro-static protection diode to the negative electrode of the leadframe. Transparent resin is finally used to form a dome-shaped package.
    Type: Grant
    Filed: June 26, 2002
    Date of Patent: December 9, 2003
    Assignee: United Epitaxy Co., Ltd.
    Inventors: Hsiang-Chih Meng, Li-Ching Ma, Chi-Ming Lin
  • Publication number: 20030122139
    Abstract: A LED package structure having an electro-static protective diode, the structure is disclosed. The structure comprises: an electro-static protective diode having an n-type electrode mounted on a lampstand by a conductive paste layer, so that it forms an electrical connecting with a positive leadfame. A LED having a p-type and an n-type electrode positioned on one side and a bottom on the other side of the LED mounted by an insulating layer atop the p-type electrode of the electro-static protective diode. Next a first conductive wire connects between the p-type electrode of the LED and the positive leadframe. A second conductive wire, connects the n-type electrode of the LED with the negative leadframe. A third conductive wire connects the p-type electrode of the electro-static protection diode to the negative electrode of the leadframe. Transparent resin is finally used to form a dome-shaped package.
    Type: Application
    Filed: June 26, 2002
    Publication date: July 3, 2003
    Applicant: United Epitaxy Co., Ltd.
    Inventors: Hsiang-Chih Meng, Li-Ching Ma, Chi-Ming Lin