Patents by Inventor Jae-Kyeong Yun

Jae-Kyeong Yun 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: 9536273
    Abstract: The present invention relates to a method for simulating image quality improvement of an image display device, in which the image display device to be tested is made to display an optimized picture quality with a simplified process by applying simplified simulation program and device; and a device therefor.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: January 3, 2017
    Assignee: LG Display Co., Ltd.
    Inventors: Dong-Woo Kang, Hyun-Ho Shin, Moo-Jong Lim, Jae-Kyeong Yun, Ho-Young Jung
  • Patent number: 8416163
    Abstract: A liquid crystal panel is disclosed that minimizes driving power consumption. The liquid crystal panel includes a plurality of gate lines and a plurality of data lines defining pixel regions. Pixels are arranged in the pixel regions and respond to signals from corresponding gate lines, corresponding data lines, and previous pixels adjacent the data lines. Accordingly, since the swing width of the pixel voltage signals supplied to the data lines is reduced, the driving power consumption can be reduced and impulse type noise can be suppressed.
    Type: Grant
    Filed: April 5, 2006
    Date of Patent: April 9, 2013
    Assignee: LG Display Co., Ltd.
    Inventor: Jae Kyeong Yun
  • Patent number: 8259050
    Abstract: A liquid crystal display device and a video processing method of the same are disclosed. A video processing method of a liquid crystal display device includes a first step determining whether a current frame is a motion picture by comparing data of a current frame with data of a previous frame; a second step converting and outputting a number of bits of a white gradation data of the current frame and outputting data of the other gradations without the bit conversion, if it is determined in the first step that the current frame is the motion picture; a third step outputting the data of the current frame without the bit-conversion if it is determined in the first step that the current frame is a still image; and a fourth step comparing the data of the current frame outputted in the second or third step with data of a previous frame and outputting overdriving control (ODC) data converted based on the result of the comparison.
    Type: Grant
    Filed: August 10, 2010
    Date of Patent: September 4, 2012
    Assignee: LG Display Co., Ltd.
    Inventor: Jae-Kyeong Yun
  • Publication number: 20120038656
    Abstract: The present invention relates to a method for simulating image quality improvement of an image display device, in which the image display device to be tested is made to display an optimized picture quality with a simplified process by applying simplified simulation program and device; and a device therefor.
    Type: Application
    Filed: July 28, 2011
    Publication date: February 16, 2012
    Inventors: Dong-Woo KANG, Hyun-Ho Shin, Moo-Jong Lim, Jae-Kyeong Yun, Ho-Young Jung
  • Publication number: 20110149146
    Abstract: A liquid crystal display device and a video processing method of the same are disclosed. A video processing method of a liquid crystal display device includes a first step determining whether a current frame is a motion picture by comparing data of a current frame with data of a previous frame; a second step converting and outputting a number of bits of a white gradation data of the current frame and outputting data of the other gradations without the bit conversion, if it is determined in the first step that the current frame is the motion picture; a third step outputting the data of the current frame without the bit-conversion if it is determined in the first step that the current frame is a still image; and a fourth step comparing the data of the current frame outputted in the second or third step with data of a previous frame and outputting overdriving control (ODC) data converted based on the result of the comparison.
    Type: Application
    Filed: August 10, 2010
    Publication date: June 23, 2011
    Inventor: Jae-Kyeong Yun
  • Patent number: 7705815
    Abstract: A backlight control unit for a liquid crystal display device includes a liquid crystal panel for displaying an image, a backlight for providing light to the liquid crystal panel, a gate driving unit and a data driving unit for driving the liquid crystal panel, a timing controller for outputting signals to control the gate driving unit and the data driving unit, and for outputting a dimming control signal to control a light output amount of the backlight according to representative gradation values obtained by analyzing red, green, and blue gradations included in inputted image data, and an inverter for controlling the backlight to control a light output amount from the backlight according to the dimming control signal outputted from the timing controller.
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: April 27, 2010
    Assignee: LG Display Co., Ltd.
    Inventors: Jae-Kyeong Yun, Hyun-ho Shin
  • Patent number: 7619605
    Abstract: Provided are a liquid crystal display device capable of improving image quality with enhanced response characteristic and a driving method thereof. The liquid crystal display device is implemented with a combination of an Over Driving Circuit driving scheme and a scan driving scheme. Specifically, in the scan driving scheme, a backlight driving voltage has a waveform that initially has an initial peak value that decreases as time passes.
    Type: Grant
    Filed: November 23, 2005
    Date of Patent: November 17, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Hyun Ho Shin, Ki Duk Kim, Jae Kyeong Yun
  • Patent number: 7432902
    Abstract: A liquid crystal display (LCD) device includes an LCD panel, a frequency multiplier to multiply a frame frequency to generate a multiplied frame frequency that includes an odd frame and an even frame, a data converter to modulate N-bit input data supplied in accordance with the odd and even frames from the frequency multiplier into (N?1)-bit data, and a data driver to apply the (N?1) bit data from the data converter to the LCD panel.
    Type: Grant
    Filed: December 21, 2004
    Date of Patent: October 7, 2008
    Assignee: LG Display Co., Ltd.
    Inventor: Jae Kyeong Yun
  • Patent number: 7248314
    Abstract: A LCD device includes a first substrate including a plurality of pixels each having a white (W) sub-pixel and red (R), green (G), blue (B) and yellow (Y) sub-pixels surrounding the W sub-pixel; thin film transistors each connected to gate and data lines over the first substrate; first to fourth pixel electrodes connected to each of the thin film transistors and disposed to correspond to one of the R, G, B and Y sub-pixels; a color filter layer including red (R), green (G), blue (B) and yellow (Y) color filters on a second substrate, each of the R, G, B and Y color filters corresponding to one of the R, G, B and Y sub-pixels; a common electrode on the color filter layer; and a liquid crystal layer interposed between the color filter layer and the first to fourth pixel electrodes.
    Type: Grant
    Filed: December 16, 2004
    Date of Patent: July 24, 2007
    Assignee: LG.Philips LCD Co., Ltd.
    Inventor: Jae-Kyeong Yun
  • Publication number: 20070146299
    Abstract: A liquid crystal display is disclosed. The disclosed liquid crystal display includes a driver circuit configured to generate at least one liquid crystal driving pulse and at least one backlight driving pulse. The liquid crystal driving pulse includes a normal data signal and a blanking signal, and the backlight driving pulse includes an active signal and a reference signal. The liquid crystal display also includes a backlight unit configured to generate light in response to the backlight driving pulse and a liquid crystal panel configured to display an image having a light transmittance that varies depending upon the liquid crystal driving pulse and the backlight driving pulse.
    Type: Application
    Filed: November 6, 2006
    Publication date: June 28, 2007
    Inventors: Ki Duk Kim, Jae kyeong Yun
  • Publication number: 20060290648
    Abstract: A backlight control unit for a liquid crystal display device includes a liquid crystal panel for displaying an image, a backlight for providing light to the liquid crystal panel, a gate driving unit and a data driving unit for driving the liquid crystal panel, a timing controller for outputting signals to control the gate driving unit and the data driving unit, and for outputting a dimming control signal to control a light output amount of the backlight according to representative gradation values obtained by analyzing red, green, and blue gradations included in inputted image data, and an inverter for controlling the backlight to control a light output amount from the backlight according to the dimming control signal outputted from the timing controller.
    Type: Application
    Filed: June 28, 2006
    Publication date: December 28, 2006
    Applicant: LG.PHILIPS LCD CO., LTD.
    Inventors: Jae-Kyeong Yun, Hyun-Ho Shin
  • Publication number: 20050140907
    Abstract: A LCD device includes a first substrate including a plurality of pixels each having a white (W) sub-pixel and red (R), green (G), blue (B) and yellow (Y) sub-pixels surrounding the W sub-pixel; thin film transistors each connected to gate and data lines over the first substrate; first to fourth pixel electrodes connected to each of the thin film transistors and disposed to correspond to one of the R, G, B and Y sub-pixels; a color filter layer including red (R), green (G), blue (B) and yellow (Y) color filters on a second substrate, each of the R, G, B and Y color filters corresponding to one of the R, G, B and Y sub-pixels; a common electrode on the color filter layer; and a liquid crystal layer interposed between the color filter layer and the first to fourth pixel electrodes.
    Type: Application
    Filed: December 16, 2004
    Publication date: June 30, 2005
    Inventor: Jae-Kyeong Yun