Patents by Inventor Chan Chung

Chan Chung 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: 5783852
    Abstract: A thin film transistor includes an insulating substrate; a polysilicon pattern formed on the insulating substrate; a first nitride layer disposed on a channel portion of the polysilicon pattern; heavily doped semiconductor layer regions disposed in upper portions of the polysilicon pattern on sides of the first nitride layer pattern; an interlevel insulating layer disposed on the insulating substrate, the polysilicon pattern, the first nitride layer and the heavily doped semiconductor layer regions, the interlevel insulating layer having a contact hole to expose a portion of the heavily doped semiconductor layer; source and drain electrodes connected to the heavily doped semiconductor layer regions through the contact hole; and a gate electrode formed on the interlevel insulating layer disposed on the first nitride layer.
    Type: Grant
    Filed: August 30, 1996
    Date of Patent: July 21, 1998
    Assignee: LG Electronics Inc.
    Inventors: Jin Jang, Kyung-Ha Lee, You-Chan Chung
  • Patent number: 5754349
    Abstract: A retractable magnifier includes an enclosure and a frame slidably mounted in the enclosure. The frame is slidable between a retracted position and two extended positions. A magnifying lens is mounted in the frame such that the lens is enclosed by the enclosure when the frame is in the retracted position, and such that the lens is exposed when the frame is in the extended position. A light with electric terminals is mounted in the frame, and is connected through a pair of conductive springs to a power source. One end of one spring is slidable in a slot in the frame to engage a switch terminal to automatically switch the light on when the frame is extended, and off when the frame is retracted.
    Type: Grant
    Filed: January 3, 1997
    Date of Patent: May 19, 1998
    Assignee: Sunrich Manufactory Ltd.
    Inventor: Chan Chung Hon
  • Patent number: D380567
    Type: Grant
    Filed: March 18, 1996
    Date of Patent: July 1, 1997
    Assignee: Sunrich Manufactory Ltd.
    Inventor: Chan Chung Hon
  • Patent number: D394272
    Type: Grant
    Filed: January 3, 1997
    Date of Patent: May 12, 1998
    Assignee: Sunrich Manufactory Ltd.
    Inventor: Chan Chung Hon