Patents by Inventor Yong Chu

Yong Chu 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).

  • Resonant tunneling opto-electronic device having a plurality of window layers
    Patent number: 5446293
    Abstract: Disclosed is an operation principle and an epitaxial structure of resonant tunneling opto-electronic device. According to the present invention, the photo-generated holes stored in front of the double barrier quantum well structure by light illumination. As a result, a large potential drop occurs in the double barrier quantum well structure. And a peak signal of the opto-electronic resonant tunneling device is generated at a relatively lower voltage illumination to one generated before introducing the light into the device. An amount of photocurrent is 10.sup.3 times and over as compared to the conventional p-i-n diode because a resonant tunneling current is optically controlled by light illumination. So that, it is possible to drive peripheral circuit without use of additional amplifiers for amplifying an output signal from the opto-electronic device.
    Type: Grant
    Filed: November 9, 1994
    Date of Patent: August 29, 1995
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Hye-Yong Chu, Pyong-Woon Park, Seon-Gyu Han, Young-Wan Choi, Gyung-Ock Kim