Patents by Inventor HAKYUN LEE

HAKYUN LEE 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).

  • Holographic display apparatus and method of driving the same
    Patent number: 9904251
    Abstract: A holographic display apparatus includes a light source unit, a spatial light modulator, and a spatial light modulator control circuit for controlling the spatial light modulator, the spatial light modulator control circuit including a data driving circuit for providing a data voltage to a signal line, a demultiplexer circuit which includes a plurality of switching elements connected to the signal line and sequentially turned on, and transfers the data voltage to a transfer line through a turned-on switching element among the switching elements, and a first element connected between the transfer line and a data line, passing a current flowing from the transfer line to the data line, and blocking a current flowing from the data line to the transfer line.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: February 27, 2018
    Assignees: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, MVTECH
    Inventors: Chunwon Byun, Jae-Eun Pi, Yong Hae Kim, Hakyun Lee, Chi-Sun Hwang
  • HOLOGRAPHIC DISPLAY APPARATUS AND METHOD OF DRIVING THE SAME
    Publication number: 20160209808
    Abstract: A holographic display apparatus includes a light source unit, a spatial light modulator, and a spatial light modulator control circuit for controlling the spatial light modulator, the spatial light modulator control circuit including a data driving circuit for providing a data voltage to a signal line, a demultiplexer circuit which includes a plurality of switching elements connected to the signal line and sequentially turned on, and transfers the data voltage to a transfer line through a turned-on switching element among the switching elements, and a first element connected between the transfer line and a data line, passing a current flowing from the transfer line to the data line, and blocking a current flowing from the data line to the transfer line.
    Type: Application
    Filed: January 15, 2016
    Publication date: July 21, 2016
    Inventors: Chunwon BYUN, Jae-Eun PI, Yong Hae KIM, HAKYUN LEE, Chi-Sun HWANG