Patents by Inventor Hee Won Jang

Hee Won Jang 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).

  • Transient voltage suppressor and its manufacturing method
    Patent number: 9391058
    Abstract: A transient voltage suppressor and its manufacturing method are provided, which can easily control voltage withstanding characteristics of a Zener diode by analogizing growth of a buried layer by forming a portion of the buried layer by performing ion implantation on a first epitaxial layer and then forming the other portion of the buried layer while depositing a second epitaxial layer having the same impurity concentration with the first epitaxial layer, and which can improve a current distribution characteristic by forming a doping region in a ring shape to increase a current pass region by increasing a PN junction area of a Zener diode in a small area.
    Type: Grant
    Filed: October 1, 2014
    Date of Patent: July 12, 2016
    Assignee: KEC Corporation
    Inventors: Hyun Sik Kim, Hee Won Jang
  • TRANSIENT VOLTAGE SUPPRESSOR AND ITS MANUFACTURING METHOD
    Publication number: 20150115390
    Abstract: A transient voltage suppressor and its manufacturing method are provided, which can easily control voltage withstanding characteristics of a Zener diode by analogizing growth of a buried layer by forming a portion of the buried layer by performing ion implantation on a first epitaxial layer and then forming the other portion of the buried layer while depositing a second epitaxial layer having the same impurity concentration with the first epitaxial layer, and which can improve a current distribution characteristic by forming a doping region in a ring shape to increase a current pass region by increasing a PN junction area of a Zener diode in a small area.
    Type: Application
    Filed: October 1, 2014
    Publication date: April 30, 2015
    Inventors: Hyun Sik Kim, Hee Won Jang