Patents by Inventor Ok-Keun Song

Ok-Keun 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: 20080170006
    Abstract: An organic light emitting display capable of preventing the occurrence of a line defect. A pixel region includes a plurality of organic light emitting diodes connected to scan lines and data lines. A scan driver supplies scan signals to the scan lines. A data driver supplies data signals to the data lines. A current limit device is connected between the scan driver and the pixel region and cuts-off a flow of an electric current flowing from the scan driver to the pixel region.
    Type: Application
    Filed: August 8, 2007
    Publication date: July 17, 2008
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Young-mo KOO, Ok-keun SONG, Hye-in JEONG, Tae-shick KIM
  • Publication number: 20080118775
    Abstract: An organic light emitting diode that can improve a driving voltage and emission efficiency includes a first electrode, an organic layer formed on the first electrode and including an emitting layer and an electron transport layer that is doped with an organic n-type impurity, and a second electrode formed on the organic layer. The electron transport layer is made of C60. An organic light emitting display includes the organic light emitting diode.
    Type: Application
    Filed: March 16, 2007
    Publication date: May 22, 2008
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Tae-Shick Kim, Ok-Keun Song, Hye-In Jeong, Young-Mo Koo
  • Publication number: 20070295959
    Abstract: An organic light-emitting display device wherein an IR drop across a first electrode can be prevented. The organic light-emitting display device includes a substrate; a plurality of stripe-shaped first electrodes disposed on the substrate and extending in a first direction; a plurality of stripe-shaped first insulators extending in a second direction to cross the stripe-shaped first electrodes; a plurality of stripe-shaped second electrodes disposed between the stripe-shaped first insulators to extend in the same direction as the stripe-shaped first insulators and cross the stripe-shaped first electrodes; an intermediate layer disposed at positions where the stripe-shaped first electrodes and the stripe-shaped second electrodes cross and including an emission layer; and first conductors disposed at positions where the stripe-shaped first electrodes and the stripe-shaped first insulators intersect and between the stripe-shaped first electrodes and the stripe-shaped first insulators.
    Type: Application
    Filed: May 30, 2007
    Publication date: December 27, 2007
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Young-Mo Koo, Ok-Keun Song, Hye-In Jeong, Tae-Shick Kim, Jae-Goo Lee
  • Publication number: 20070278951
    Abstract: A backlight unit for a liquid crystal display device (LCD), and an LCD including the same are disclosed. One embodiment of the backlight unit includes an organic light emitting element in which the efficiency of light extraction is improved without decreasing productivity to achieve high brightness and a low consumption power. The backlight unit includes a substrate, an organic light emitting element formed on the substrate, and an encapsulating member attached to the substrate to enclose the organic light emitting element. The backlight unit further includes a scattering film on one of surfaces of the substrate, the organic light emitting element and the encapsulating member to prevent light emitting from the organic light emitting element from being totally reflected.
    Type: Application
    Filed: April 4, 2007
    Publication date: December 6, 2007
    Inventors: Young-Mo Koo, Doo-Hwan Kim, Hyuk-Sang Jun, Tae-Shick Kim, Hye-In Jeong, Ok-Keun Song
  • Publication number: 20060228580
    Abstract: An organic electroluminescent device comprising an organic layer is provided. The organic layer is an electron transport layer comprising an electron transport material and a blue emission material. This electron transport layer causes an increase in the blue emission efficiency and lifespan of the organic electroluminescent device while improving efficiency in red and green ranges, a driving voltage, a color coordinate, and the lifespan of the organic electroluminescent device are not changed.
    Type: Application
    Filed: July 28, 2005
    Publication date: October 12, 2006
    Inventors: Hye-In Jeong, Ok-Keun Song, Young-Mo Koo, Yong-Han Lee
  • Publication number: 20060078759
    Abstract: An organic electroluminescent device comprises a first electrode, a hole transport layer comprising a hole transporting material and an blue emission material formed on the first electrode, an emission layer formed on the hole transport layer, and a second electrode formed on the emission layer. The hole transport layer comprising the blue emission material and the hole transporting material provides the organic electroluminescent device with a longer lifespan while maintaining luminous efficiency, a low driving voltage, and an improved color coordinate.
    Type: Application
    Filed: July 28, 2005
    Publication date: April 13, 2006
    Inventors: Hye-In Jeong, Ok-Keun Song, Young-Mo Koo, Tae-Shick Kim
  • Publication number: 20060076885
    Abstract: An organic electroluminescent device is disclosed that includes an emission layer between a first electrode and a second electrode, and a buffer layer between the emission layer and the first electrode. The buffer layer includes a carbon-based compound and may be about 0.1 nm to about 100 nm thick. The organic electroluminescent device has greater driving voltage, better efficiency, and a longer life expectancy.
    Type: Application
    Filed: October 11, 2005
    Publication date: April 13, 2006
    Inventors: Tae-Shick Kim, Hye-In Jeong, Young-Mo Koo, Ok-Keun Song, Jun-Yeob Lee, Min-Seung Chun, Mi-Kyung Kim
  • Publication number: 20060024525
    Abstract: An organic electroluminescent device including an organic green emission layer comprising a green emission material and a blue emission material. The green emission layer is interposed between a pair of electrodes.
    Type: Application
    Filed: July 26, 2005
    Publication date: February 2, 2006
    Inventors: Hye-In Jeong, Ok-Keun Song, Young-Mo Koo, Yong-Han Lee
  • Publication number: 20040042770
    Abstract: Provided is a heating crucible for an organic thin film forming apparatus, the heating crucible including a main body in which to contain an organic substance, a cover provided on the main body, the cover formed of an insulating material and having a nozzle through which a gaseous organic substance comes out from the main body, a cover heater formed as a thin film type on the top surface of the cover, and a body heater heating the main body.
    Type: Application
    Filed: September 2, 2003
    Publication date: March 4, 2004
    Applicant: SAMSUNG NEC Mobile Display Co., Ltd.
    Inventors: Yun Soo Choe, Ok Keun Song