Patents by Inventor Choong Hoon Yi

Choong Hoon Yi 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).

  • Patent number: 7772018
    Abstract: A method for manufacturing an organic light emitting diode includes a lower substrate, a luminous element provided with upper and lower electrodes, and disposed on the lower substrate, a shielding layer disposed on the luminous element for shielding outer moisture, the shielding layer being formed of at least one layer, and an upper substrate disposed on the shielding layer.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: August 10, 2010
    Inventor: Choong Hoon Yi
  • Patent number: 7211950
    Abstract: An organic light emitting diode includes a lower substrate, luminous element provided with upper and lower electrodes and disposed on the lower substrate, a shielding layer disposed on the luminous clement for shielding outer moisture, the shielding layer being formed of at least one layer, and an upper substrate disposed on the shielding layer.
    Type: Grant
    Filed: April 26, 2002
    Date of Patent: May 1, 2007
    Inventor: Choong Hoon Yi
  • Patent number: 6791522
    Abstract: A triodic rectifier switch includes at least one first diode connected to a data line, at least two second diodes connected to a load capacitor, a resistor having one terminal connected to a scan line and the other terminal connected to a node between the first diodes and the second diodes. The triode rectifier switch further includes at least one reset diode having one terminal connected to a node between the first and second diodes and the other terminal connected to a reset line. The second diodes are serially-connected to each other.
    Type: Grant
    Filed: November 21, 2001
    Date of Patent: September 14, 2004
    Assignee: Samsung SDI Co., Ltd
    Inventors: Choong-Hoon Yi, Gregory S. Um, Sun-Hee Yang, Chang-Su Seo, Song-Yi Lee
  • Publication number: 20040160175
    Abstract: An organic light emitting diode includes a lower substrate, luminous element provided with upper and lower electrodes and disposed on the lower substrate, a shielding layer disposed on the luminous clement for shielding outer moisture, the shielding layer being formed of at least one layer, and an upper substrate disposed on the shielding layer.
    Type: Application
    Filed: December 1, 2003
    Publication date: August 19, 2004
    Inventor: Choong Hoon Yi
  • Patent number: 6670649
    Abstract: The present invention discloses a triodic rectifier switch (TRS) having two diodes and one resistor. Each of the two diodes includes first and second electrodes, the first electrode made of a material having a work function of more than 4.5 eV (electron volts), the second electrode made of a material having a work function of less than 4.5 eV, and a semiconductor layer formed between the first and second electrode. The first electrode is made of a material selected from a group including indium tin oxide, Ni, Se, Pt, Os, Ir, Pd, Au, Cu, Ge, Be, Te, and Mo, and the second in electrode is made of a material selected from a group including K, Na, Ca, Li, Mg, In, Ta, Pb, Ag, Al, Zn, Sn, Fe, and Cr. The first and second electrodes may also have multiple layers.
    Type: Grant
    Filed: December 12, 2001
    Date of Patent: December 30, 2003
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Choong-Hoon Yi, Un-Chol Oh, Won-Pil Lee, Sun-Hee Yang, Gregory S. Um
  • Publication number: 20020080637
    Abstract: The present invention discloses a triodic rectifier switch (TRS) having two diodes and one resistor. Each of the two diodes includes first and second electrodes, the first electrode made of a material having a work function of more than 4.5 eV (electron volts), the second electrode made of a material having a work function of less than 4.5 eV, and a semiconductor layer formed between the first and second electrode. The first electrode is made of a material selected from a group including indium tin oxide, Ni, Se, Pt, Os, Ir, Pd, Au, Cu, Ge, Be, Te, and Mo, and the second in electrode is made of a material selected from a group including K, Na, Ca, Li, Mg, In, Ta, Pb, Ag, Al, Zn, Sn, Fe, and Cr. The first and second electrodes may also have multiple layers.
    Type: Application
    Filed: December 12, 2001
    Publication date: June 27, 2002
    Inventors: Choong-Hoon Yi, Un-Chol Oh, Won-Pil Lee, Sun-Hee Yang, Gregory S. Um
  • Publication number: 20020063683
    Abstract: A triodic rectifier switch includes at least one first diode connected to a data line, at least two second diodes connected to a load capacitor, a resistor having one terminal connected to a scan line and the other terminal connected to a node between the first diodes and the second diodes. The triode rectifier switch further includes at least one reset diode having one terminal connected to a node between the first and second diodes and the other terminal connected to a reset line. The second diodes are serially-connected to each other.
    Type: Application
    Filed: November 21, 2001
    Publication date: May 30, 2002
    Inventors: Choong-Hoon Yi, Gregory S. Um, Sun-Hee Yang, Chang-Su Seo, Song-Yi Lee