Patents by Inventor Yong-Hoon Song

Yong-Hoon Song 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).

  • Publication number: 20240144893
    Abstract: A display panel includes an amorphous silicon gate driver in which a lower voltage than the gate-off voltage output from the gate driver is applied to an adjacent stage as a low voltage transmission signal.
    Type: Application
    Filed: January 10, 2024
    Publication date: May 2, 2024
    Inventors: JAE-HOON LEE, SEUNG-HWAN MOON, YONG-SOON LEE, YOUNG-SU KIM, CHANG-HO LEE, WHEE-WON LEE, JUN-YONG SONG, YU-HAN BAE
  • Patent number: 8704601
    Abstract: The present invention includes a class-E power amplifier, comprising a driver stage (DS) including a first power amplifier with transistors, to which an input signal is inputted; a main stage (MS), including a second power amplifier with transistors, whose input is connected to the output of the DS; and a first LC resonator whose one end is connected to the output of the DS and the other end to the ground as an AC equivalent circuit and a second LC resonator whose one end is connected to the input of the MS and the other end to the ground as an AC equivalent circuit. In accordance with the present invention, as the voltage stress is reduced on the CMOS class-E power amplifier, the application of the high power supply voltage may be allowed and therefore the load impedance may be high while the same efficiency is maintained.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: April 22, 2014
    Assignee: SNU R&DB Foundation
    Inventors: Sang Wook Nam, Yong Hoon Song, Sung Ho Lee, Jae Jun Lee, Eun II Cho
  • Publication number: 20120319782
    Abstract: The present invention includes a class-E power amplifier, comprising a driver stage (DS) including a first power amplifier with transistors, to which an input signal is inputted; a main stage (MS), including a second power amplifier with transistors, whose input is connected to the output of the DS; and a first LC resonator whose one end is connected to the output of the DS and the other end to the ground as an AC equivalent circuit and a second LC resonator whose one end is connected to the input of the MS and the other end to the ground as an AC equivalent circuit. In accordance with the present invention, as the voltage stress is reduced on the CMOS class-E power amplifier, the application of the high power supply voltage may be allowed and therefore the load impedance may be high while the same efficiency is maintained.
    Type: Application
    Filed: December 15, 2010
    Publication date: December 20, 2012
    Applicant: SNU R&DB FOUNDATION
    Inventors: Sang Wook Nam, Yong Hoon Song, Sung Ho Lee, Jae Jun Lee, Eun Il Cho
  • Publication number: 20050199262
    Abstract: The present invention provides an ashing method using rapid heat transfer under high pressure. The present method, applicable to all photoresist ashing processes, can rapidly remove hardened photoresists without popping at the ashing step by baking high dose ion implanted silicon substrate on a hot plate, enhancing the ashing quantity, by drastically reducing the ashing process time, while allowing conventional equipments to be used further. The present method comprises an in situ baking step, wherein a silicon substrate is baked for a predetermined time period under a pressure of 10 Torr or more while it is placed on a hot plate; a vacuumizing step, wherein a stable vacuum status is achieved while the silicon substrate is placed on the hot plate; a gas processing step, wherein selected reaction gas is introduced into a reaction chamber; and an ashing step, wherein plasma is generated until almost all of the photoresists are removed.
    Type: Application
    Filed: October 7, 2002
    Publication date: September 15, 2005
    Inventors: Jong-Po Jeon, Yong-Hoon Song, Jin-Woo Park, Seung-Bok Yang