Patents by Inventor Hyun-Gu Heo

Hyun-Gu Heo 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: 20230309196
    Abstract: The present invention provides a heating tray for a vacuum hopper precharger, wherein a heating part is configured in a tray having a secondary battery mounted thereon to allow heat generated from the heating part to be circulated inside a vacuum hopper precharger and to be transferred to the entire secondary battery so that the activity of an electrolyte inside the secondary battery is improved, and according thereto, a large amount of residual gas and impurities can be discharged so as to increase purity of the secondary battery. Particularly, the secondary battery can be fully charged with an electrolyte inside the vacuum hopper precharger, thereby improving productivity compared to a conventional configuration in which a secondary battery is charged with an electrolyte at 60% to 70% inside a vacuum hopper precharger and then charged with a remaining charge amount in another process so as to be fully charged.
    Type: Application
    Filed: May 10, 2022
    Publication date: September 28, 2023
    Inventors: Byoung Chul CHO, Hyun Gu HEO, Young Hak PYO, Geun Sik YOO, Jae Deuk LEE, Dae Lim JUNG, Tae Kyu KIM, Jong Wook BAE
  • Patent number: 7612738
    Abstract: A plasma display device includes first to fourth transistors and a plurality of first electrodes. A first terminal of a first capacitor is connected to a power supply supplying a voltage. A second terminal of a second capacitor connected to a second terminal of the first capacitor is connected to a ground terminal. A first diode is connected to the first electrodes through a first inductor and a fifth transistor, which forms a voltage rising path. A second diode is connected to the first electrodes through a second inductor and a sixth transistor, which forms a voltage falling path. A third diode is connected to the third transistor and the second diode, which forms a voltage sustaining path during a voltage rising period. A fourth diode is connected to the second transistor and the first diode, which forms a voltage sustaining path of a voltage falling period.
    Type: Grant
    Filed: March 28, 2007
    Date of Patent: November 3, 2009
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Hak-Cheol Yang, Joon-Yeon Kim, Jong-Ki Choi, Hyun-Gu Heo, Yong-Jin Jeong, Suk-Chin Sakong, Sung-Soo Hong, Chung-Wook Roh, Sang-Kyoo Han, Won-Seok Nam, Yon-Goo Park
  • Publication number: 20080088531
    Abstract: A plasma display device includes first to fourth transistors and a plurality of first electrodes. A first terminal of a first capacitor is connected to a power supply supplying a voltage. A second terminal of a second capacitor connected to a second terminal of the first capacitor is connected to a ground terminal. A first diode is connected to the first electrodes through a first inductor and a fifth transistor, which forms a voltage rising path. A second diode is connected to the first electrodes through a second inductor and a sixth transistor, which forms a voltage falling path. A third diode is connected to the third transistor and the second diode, which forms a voltage sustaining path during a voltage rising period. A fourth diode is connected to the second transistor and the first diode, which forms a voltage sustaining path of a voltage falling period.
    Type: Application
    Filed: March 28, 2007
    Publication date: April 17, 2008
    Inventors: Hak-Cheol Yang, Joon-Yeon Kim, Jong-Ki Choi, Hyun-Gu Heo, Yong-Jin Jeong, Suk-Chin Sakong, Sung-Soo Hong, Chung-Wook Roh, Sang-Kyoo Han, Won-Seok Nam, Yon-Goo Park
  • Publication number: 20070091017
    Abstract: In a driving circuit for alternately applying a high level voltage and a low level voltage to an electrode of a plasma display, a first capacitor formed in a power source unit and that supplies the high level voltage is used to increase a voltage at the electrode to the high level voltage. In addition, a second capacitor coupled between the first capacitor and a voltage source for supplying the low level voltage is used to decrease the voltage at the electrode.
    Type: Application
    Filed: October 3, 2006
    Publication date: April 26, 2007
    Inventors: Sang-Shin Kwak, Hak-Cheol Yang, Joon-Yeon Kim, Hyun-Gu Heo
  • Publication number: 20070080900
    Abstract: A plasma display device includes a plasma display panel including first display regions and second display regions extending in a first direction and first electrodes extending in a second direction crossing the first direction. First cells are defined by the first display regions and the first electrodes, and second cells are defined by the second display regions and the first electrodes. The plasma display device is driven during frames, and each frame is divided into a plurality of subfields. In a first subfield of a first frame, a driver selects at least one on-cell among the first cells and/or the second cells using a first address method. In a second subfield of the first frame, the driver selects at least one off-cell among the first cells and selects at least one off-cell among the second cells, using a second address method.
    Type: Application
    Filed: October 4, 2006
    Publication date: April 12, 2007
    Inventors: Joon-Yeon Kim, Hak-Cheol Yang, Hyun-Gu Heo, Jeong-Nam Kim
  • Publication number: 20070080899
    Abstract: A plasma display device and a method for driving the plasma display device. In a first subfield, a first voltage is alternately applied to the first and second electrodes by applying a first addressing scheme for converting an on-cell to an off-cell for a sustain period. In a second subfield, the off-cell is converted to the light emitting state. Initialization in a reset period is appropriately performed whether a write addressing method or an erase addressing method is used.
    Type: Application
    Filed: October 4, 2006
    Publication date: April 12, 2007
    Inventors: Hak-Cheol Yang, Joon-Yeon Kim, Yong Jeong, Hyun-Gu Heo, Jong-Ki Choi
  • Publication number: 20070080901
    Abstract: A plasma display device is disclosed. In one embodiment, the device includes a plurality of first electrodes, a plurality of second electrodes, and a plurality of third electrodes formed to cross the first and second electrodes. A first voltage is alternately applied to the plurality of first and second electrodes using a first address scheme for converting on-cells into an off-cell state during a sustain period at a first subfield, and a second address scheme is used to convert the off-cells into an on-cell state at a second subfield. During a first period between the first and second subfields, a voltage is applied to the plurality of first and second electrodes such that a voltage difference between the plurality of first and second electrodes is greater than the first voltage. With such a first period, even when the write address scheme and the erase address scheme are used together, the initializing is performed appropriately.
    Type: Application
    Filed: October 11, 2006
    Publication date: April 12, 2007
    Inventors: Hak-Cheol Yang, Joon-Yeon Kim, Hyun-Gu Heo, Sang-Shin Kwak