Patents by Inventor Chang Hoon Jeon

Chang Hoon Jeon 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: 20090206770
    Abstract: Disclosed herein are a light emitting display device which can reduce hysteresis of a driving transistor to improve picture quality, and a method for driving the same. The device includes a pixel cell formed in an area defined by a data line supplied with a data voltage, at least one scan line supplied with a scan signal, a light emission control signal line supplied with a light emission control signal, a driving voltage line supplied with a driving voltage, and a compensation voltage line supplied with a compensation voltage of a first voltage level or a second voltage level different from the first voltage level. The pixel cell includes a light emitting element for emitting light by current, and a pixel circuit for providing current corresponding to the data voltage to the light emitting element using the data voltage, scan signal, light emission control signal, driving voltage and compensation voltage.
    Type: Application
    Filed: July 9, 2008
    Publication date: August 20, 2009
    Inventors: Soon Kwang Hong, Chang Hoon Jeon
  • Publication number: 20090207107
    Abstract: An electro-luminescence display device and a method of driving the same for controlling a full white brightness depending upon a brightness of the external environment and thus controlling a brightness mode is disclosed. An electro-luminescence display device according to the present invention comprising: a display panel having pixels light-emitted by a supplied current; a data driver for applying a data voltage corresponding to said current to the pixels; and a timing controller for dividing one frame into a plurality of sub-frames and applying said data voltage corresponding to each of the plurality of sub-frames to the data driver and for controlling an emission time of each frame.
    Type: Application
    Filed: April 24, 2009
    Publication date: August 20, 2009
    Inventors: Hoon Ju Chung, Chang Hoon Jeon
  • Publication number: 20090167648
    Abstract: A OLED display and a driving method thereof are disclosed.
    Type: Application
    Filed: December 15, 2008
    Publication date: July 2, 2009
    Inventors: Chang Hoon Jeon, Jung Chul Kim, Ho Young Lee
  • Patent number: 7538749
    Abstract: An electro-luminescence display device and a method of driving the same for controlling a full white brightness depending upon a brightness of the external environment and thus controlling a brightness mode is disclosed. An electro-luminescence display device according to the present invention comprising: a display panel having pixels light-emitted by a supplied current; a data driver for applying a data voltage corresponding to said current to the pixels; and a timing controller for dividing one frame into a plurality of sub-frames and applying said data voltage corresponding to each of the plurality of sub-frames to the data driver and for controlling an emission time of each frame.
    Type: Grant
    Filed: December 28, 2004
    Date of Patent: May 26, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Hoon Ju Chung, Chang Hoon Jeon
  • Publication number: 20080099850
    Abstract: In a fin field effect transistor (Fin FET)and a method of manufacturing the Fin FET, the Fin FET includes an active pattern inside which insulating layer patterns are formed, an isolation layer pattern enclosing a sidewall of the active pattern such that an opening exposing a sidewall of the active pattern located between the insulating layer patterns is formed, a gate electrode formed on the active pattern to fill the opening, impurity regions formed at portions of the active pattern adjacent to sidewalls of the gate electrode, an insulating interlayer covering the active pattern and the gate electrode and contact plugs formed through portions of the insulating interlayer and the active pattern adjacent to the sidewalls of the gate electrode such that the contact plug makes contact with the impurity region.
    Type: Application
    Filed: October 23, 2007
    Publication date: May 1, 2008
    Inventors: Chang-Hoon Jeon, Satoru Yamada, Sang-Yeon Han, Jong-Man Park, Si-Ok Sohn
  • Publication number: 20070105334
    Abstract: In methods of fabricating a semiconductor device having multiple channel transistors and semiconductor devices fabricated thereby, the semiconductor device includes an isolation region disposed within a semiconductor substrate and defining a first region. A plurality of semiconductor pillars self-aligned with the first region and spaced apart from each other are disposed within the first region, and each of the semiconductor pillars has at least one recessed region therein. At least one gate structure may be disposed across the recessed regions, which crosses the semiconductor pillars and extends onto the isolation region.
    Type: Application
    Filed: July 13, 2006
    Publication date: May 10, 2007
    Inventors: Se-Myeong Jang, Makoto Yoshida, Jae-Rok Kahng, Hyun-Ju Sung, Hui-Jung Kim, Chang-Hoon Jeon
  • Publication number: 20070080909
    Abstract: A method of driving an organic electroluminescent display device, including measuring a gray level of an image, turning on a sampling transistor connected to gate electrode and drain electrode of a driving transistor during a sampling time, applying a data voltage to operate the driving transistor, and supplying a current to an light emitting diode through the driving transistor.
    Type: Application
    Filed: June 29, 2006
    Publication date: April 12, 2007
    Inventors: Chang-Hoon Jeon, Jin Huh
  • Publication number: 20060145962
    Abstract: A driving system for an electro-luminescence display device includes an organic light emitting diode (OLED) panel having a plurality of pixels. The pixels include a red pixel, a green pixel and a blue pixel. The driving system includes a controller and a level shift unit. The controller receives a first digital data and converts the first digital data into a second digital data for a gray scale display. The level shift unit converts the second digital signal to a data voltage and supplies the data voltage to the pixels. The level shift unit operates to provide a different source voltage to the red pixel, the green pixel and the blue pixel. The red, green and blue pixels may be independently and separately controlled.
    Type: Application
    Filed: August 19, 2005
    Publication date: July 6, 2006
    Inventor: Chang-Hoon Jeon
  • Publication number: 20050212729
    Abstract: A driving method of a flat panel display includes dividing one frame into a plurality of sub-frames, wherein each sub-frame includes an on-state time, each on-state time corresponds to a weight value, and at least one of the weight values is expressed in the form of a non-binary code; applying an on-state gate signal to a pixel in each sub-frame to turn on the pixel; and applying each bit of a data signal corresponding to each sub-frame to the pixel.
    Type: Application
    Filed: October 13, 2004
    Publication date: September 29, 2005
    Inventors: Hoon-Ju Chung, Chang-Hoon Jeon