Patents by Inventor Jae Do Lee

Jae Do Lee 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: 9224328
    Abstract: A method for controlling an organic electro luminescence display device, the device including a display panel including a plurality of data lines that cross a plurality of scan lines, and including electro luminescence elements arranged at intersections of the plurality of data lines and the plurality of scan lines; a pre-charge driver configured to select one of a plurality of pre-charge current levels in accordance with a gray level of incoming data, and supply a pre-charge current, corresponding to the selected one of the plurality of pre-charge current levels, to the electro luminescence elements via the plurality of data lines prior to supplying a data current, corresponding to the incoming data, to the electro luminescence elements, so as to pre-charge the electro luminescence elements; and a data driver configured to subsequently supply the data current to the pre-charged electro luminescence elements via the plurality of data lines.
    Type: Grant
    Filed: May 31, 2005
    Date of Patent: December 29, 2015
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Hak Su Kim, Jae Do Lee, Won Kyu Ha
  • Publication number: 20140062916
    Abstract: Disclosed is a touch panel which facilitates to realize a simplified structure owing to a flexible printed circuit film which is formed on only one surface of a substrate without being formed on the other surface of the substrate, and a method of manufacturing the same, and a display device using the same.
    Type: Application
    Filed: April 4, 2013
    Publication date: March 6, 2014
    Applicant: LG Display Co., Ltd.
    Inventors: Sunggon HONG, Soon Kwang HONG, Jae Do LEE, Yonghee HAN
  • Patent number: 8274451
    Abstract: The present invention relates to an electroluminescent device, particularly to an organic electroluminescent device reliably receiving driving voltage from a voltage source, and a method of driving the same. A driving circuit of the electroluminescent device includes first to third sub-pixels formed on crossing areas of data lines and scan lines, a pre-charge driving circuit which applies pre-charge current to the data lines of the first to third sub-pixels and a data driving circuit which applies data current to the pre-charged data lines. The pre-charge current is applied to the first to third sub-pixels in different time. The organic electroluminescent device of the present invention and the method of driving the same can reliably receive the driving voltage from the voltage source, and prevent quick flames of the device.
    Type: Grant
    Filed: December 15, 2005
    Date of Patent: September 25, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Ji Hun Kim, Hee Young Lee, Jae Do Lee
  • Patent number: 7884782
    Abstract: An electro-luminescence display panel and a driving method thereof for increasing a light-emitting time of a pixel as well as reducing power consumption are disclosed. In the electro-luminescence display panel, a pixel matrix has a plurality of electro-luminescence cells connected between scan lines and data lines. A scan driver drives the scan line. A data driver pre-charges the data lines into a middle voltage of data signals and then supplies corresponding data signals.
    Type: Grant
    Filed: February 14, 2005
    Date of Patent: February 8, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Jae Do Lee, Ki Heon Kim, Hak Su Kim
  • Patent number: 7843409
    Abstract: The present relates to a dual panel apparatus including two panels driven simultaneously. The dual panel apparatus includes a first panel, a second panel and a data driver. The first panel has a plurality of pixels formed in cross areas of data lines and first scan lines. The second panel has a plurality of second pixels formed in cross areas of the data lines and second scan lines. The data driver provides compensating precharge current to one or more data line. The dual panel apparatus uses two panels as main display device and sub display device, and thus the unit cost of the dual panel apparatus is reduced.
    Type: Grant
    Filed: March 24, 2006
    Date of Patent: November 30, 2010
    Assignee: LG Display Co., Ltd.
    Inventors: Young Jun Hong, Hak Su Kim, Jae Do Lee
  • Patent number: 7742022
    Abstract: There is disclosed an organic EL display device using pre-charge which can improve display quality by preventing a cross talk generated by a brightness difference within the same picture realization area, and a driving method thereof. An organic EL display device according to an embodiment of the present invention includes a display panel where a plurality of data lines cross a plurality of scan lines and electro luminescence cells are arranged in the crossing parts thereof; a pre-charge driver for supplying a pre-charge current to the data line in accordance with gray levels of data; and a data driver for charging a data current to the data line for a designated period which is set before a scan pulse is supplied to the electro luminescence cell and after the pre-charge current is supplied.
    Type: Grant
    Filed: April 18, 2006
    Date of Patent: June 22, 2010
    Assignee: LG Electronics Inc.
    Inventors: Hak Su Kim, Jae Do Lee
  • Patent number: 7663589
    Abstract: There is disclosed an electro-luminescence display device that is adaptive for preventing picture quality deterioration by operating a thin film transistor for an electro-luminescence cell drive at a non-saturation area to compensate a threshold voltage, and a driving method thereof.
    Type: Grant
    Filed: February 1, 2005
    Date of Patent: February 16, 2010
    Assignee: LG Electronics Inc.
    Inventors: Won Kyu Ha, Hak Su Kim, Jae Do Lee, Ki Heon Kim, Jung Min Seo, Hyun Joung Kim
  • Publication number: 20100006783
    Abstract: The present disclosure relates to a light emitting diode display device which can prevent a drive switching device from degrading.
    Type: Application
    Filed: July 7, 2009
    Publication date: January 14, 2010
    Inventors: Yong-Il Kwon, Kyoung-Don Woo, Jae Do Lee
  • Patent number: 7564068
    Abstract: The present invention relates to a COG-typed organic electroluminescent device including dummy data lines formed at different location from data lines. The COG-typed organic electroluminescent cell having a plurality of pixels formed in the luminescent areas which are cross areas of indium tin oxide films (ITO films) and metal line layers includes data line pads, dummy data lines, and a dummy data line connecting section. The data line pads each are connected to one end of the ITO films. The dummy data lines each are connected to the other end of the ITO films. The dummy data line connecting section connects the dummy data lines. In the cell, the dummy lines are formed separately from the pads, and thus the number of pins may be reduced.
    Type: Grant
    Filed: August 16, 2005
    Date of Patent: July 21, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Hak Su Kim, Jae Do Lee, Won Kyu Ha
  • Patent number: 7365716
    Abstract: The present invention relates to a light emitting device for preventing cross-talk phenomenon. The light emitting device includes a plurality of pixels and a scan driving circuit. The pixels are formed in cross areas of data lines and scan lines. The scan driving circuit couples at least one scan line to a first voltage source having a first voltage during a first time, couples the scan line to a second voltage source having a second voltage during a second time, and couples the scan line to a third voltage source having a third voltage during a third time. Here, the second voltage is a voltage between the first voltage and the third voltage. The light emitting device discharges the data lines to the same level as data current irrespective of precharge current, and thus cross-talk phenomenon is not occurred to the light emitting device.
    Type: Grant
    Filed: March 13, 2006
    Date of Patent: April 29, 2008
    Assignee: LG Electronics Inc.
    Inventors: Hak Su Kim, Jae Do Lee, Su Jin Baek
  • Publication number: 20080001865
    Abstract: Provided a light emitting display comprising a substrate, a pixel part located on the substrate, the pixel part comprising a plurality of sub-pixels located at the intersections of a plurality of scan lines and data lines in a matrix type format, a scan driver supplying a scan signal to the pixel part through the scan lines, a data driver converting a data signal and a pre-charge signal corresponding to the data signal into currents through the data lines so as to selectively supply the currents to the pixel part, and a controller applying control signals to the scan driver and the data driver.
    Type: Application
    Filed: February 6, 2007
    Publication date: January 3, 2008
    Inventors: Ji Hun Kim, Hak Soo Kim, Jae Do Lee
  • Publication number: 20070210999
    Abstract: A driving method for a light emitting device according to the present invention comprises inputting a scan signal to a pixel comprising two and more sub-pixels formed between data lines and scan lines through the scan lines; and inputting data signals to the two and more sub-pixels so that at least one of the data signals inputted through the data lines has the start point and end point different from at least one of the others.
    Type: Application
    Filed: August 15, 2006
    Publication date: September 13, 2007
    Inventor: Jae Do Lee
  • Patent number: 6170734
    Abstract: This invention relates to a method of joining silicon nitride having on its surface a thin layer of active silicon metal to carbon steel, wherein the active silicon layer is formed through the thermal dissociation of silicon nitride(Si3N4) into silicon(Si) and nitrogen gas(N2). The active silicon layer is directly joined to carbon steel via an induced eutectic melting reaction between the silicon (Si) an iron (Fe) of carbon steel, or via brazing of two materials Ag—Cu alloys. This joining process does not require the use of expensive Ag—Cu—Ti active brazing alloys containing an active metal (Ti) or a sputtering method designed to coat the active metals on surface of silicon nitride.
    Type: Grant
    Filed: July 23, 1999
    Date of Patent: January 9, 2001
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Jae Do Lee, Young Min Choi
  • Patent number: 6018142
    Abstract: A silicon-based ceramic heater suitable for use in a glow plug of a diesel engine, the heater comprising a refractory metal heating element, preferably a wire which consists essentially of tungsten (W), molybdenum (Mo), or an alloy of tungsten and molybdenum; a titanium nitride (TiN) coating on the heating element, which coating serves as a barrier to the diffusion of silicon and defines a coated heating element; and a sintered body, preferably consisting essentially of silicon nitride (Si.sub.3 N.sub.4), silicon carbide (SiC), or a composite of silicon nitride and silicon carbide, within which the coated heating element is embedded.
    Type: Grant
    Filed: March 3, 1998
    Date of Patent: January 25, 2000
    Assignee: Korea Research Institiute of Chemical Technology
    Inventors: Jae Do Lee, Young Min Choi, Oh Sang Lee, Sang Hoon Lee