Patents by Inventor Sai Chang Yun

Sai Chang 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: 9330618
    Abstract: A driving circuit for a display device, for reducing power consumption of a data driver, and a method of driving the driving circuit are disclosed. The driving circuit includes a data driver for maintaining buffers of the data driver in an on state every preset specific frame period and maintaining the buffers in an off state every remaining period except for specific frame periods in a refresh mode for processing image data of one image for the specific frame periods only.
    Type: Grant
    Filed: October 14, 2013
    Date of Patent: May 3, 2016
    Assignee: LG Display Co., Ltd.
    Inventors: Sai-Chang Yun, You-Sung Nam, Si-Hyun Kim, Nak-Yoon Kim
  • Publication number: 20140306872
    Abstract: A driving circuit for a display device, for reducing power consumption of a data driver, and a method of driving the driving circuit are disclosed. The driving circuit includes a data driver for maintaining buffers of the data driver in an on state every preset specific frame period and maintaining the buffers in an off state every remaining period except for specific frame periods in a refresh mode for processing image data of one image for the specific frame periods only.
    Type: Application
    Filed: October 14, 2013
    Publication date: October 16, 2014
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Sai-Chang YUN, You-Sung NAM, Si-Hyun KIM, Nak-Yoon KIM
  • Patent number: 8670097
    Abstract: A liquid crystal display device includes a plurality of pixels at intersections of a plurality of row lines and a plurality of column lines, wherein each pixel includes a switching transistor, and pixel and common electrodes that induce an in-plane electric field; a plurality of gate lines each connected to the pixels on each row line; a plurality of data lines each connected to the pixels on each column line; and a plurality of common lines each connected to the common electrodes of the pixels alternately located on neighboring two row lines per one column line.
    Type: Grant
    Filed: December 28, 2010
    Date of Patent: March 11, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Sai-Chang Yun, Seung-Ho Heo, You-Sung Nam, Yong-Hwa Park, Dae-Seok Oh
  • Patent number: 8654269
    Abstract: A liquid crystal display panel capable of reducing a capacitance of a parasitic capacitor between a data line and a pixel electrode. The liquid crystal display panel comprises: a thin film transistor at a crossing of a gate line and a data line, liquid crystal cells including a pixel electrode connected to the thin film transistor; first shield patterns in the liquid crystal cells, each shield pattern being parallel to the data line without overlapping the data line, wherein the shield patterns are insulated from and overlap with an outer portion of the pixel electrode; and a common line arrayed to connect the shield patterns for each the liquid crystal cell.
    Type: Grant
    Filed: July 2, 2012
    Date of Patent: February 18, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Hong Sung Song, Sai Chang Yun, Sang Chang Yun, Jae Woo Lee
  • Publication number: 20120268679
    Abstract: A liquid crystal display panel capable of reducing a capacitance of a parasitic capacitor between a data line and a pixel electrode. The liquid crystal display panel comprises: a thin film transistor at a crossing of a gate line and a data line, liquid crystal cells including a pixel electrode connected to the thin film transistor; first shield patterns in the liquid crystal cells, each shield pattern being parallel to the data line without overlapping the data line, wherein the shield patterns are insulated from and overlap with an outer portion of the pixel electrode; and a common line arrayed to connect the shield patterns for each the liquid crystal cell.
    Type: Application
    Filed: July 2, 2012
    Publication date: October 25, 2012
    Inventors: Hong Sung SONG, Sai Chang Yun, Sang Chang Yun, Jae Woo Lee
  • Patent number: 8212952
    Abstract: A liquid crystal display panel capable of reducing a capacitance of a parasitic capacitor between a data line and a pixel electrode. The liquid crystal display panel comprises: a thin film transistor at a crossing of a gate line and a data line, liquid crystal cells including a pixel electrode connected to the thin film transistor; first shield patterns in the liquid crystal cells, each shield pattern being parallel to the data line without overlapping the data line, wherein the shield patterns are insulated from and overlap with an outer portion of the pixel electrode; and a common line arrayed to connect the shield patterns for each the liquid crystal cell.
    Type: Grant
    Filed: November 16, 2009
    Date of Patent: July 3, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Hong Sung Song, Sai Chang Yun, Sang Chang Yun, Jae Woo Lee
  • Publication number: 20110249210
    Abstract: A liquid crystal display device includes a plurality of pixels at intersections of a plurality of row lines and a plurality of column lines, wherein each pixel includes a switching transistor, and pixel and common electrodes that induce an in-plane electric field; a plurality of gate lines each connected to the pixels on each row line; a plurality of data lines each connected to the pixels on each column line; and a plurality of common lines each connected to the common electrodes of the pixels alternately located on neighboring two row lines per one column line.
    Type: Application
    Filed: December 28, 2010
    Publication date: October 13, 2011
    Inventors: Sai-Chang YUN, Seung-Ho Heo, You-Sung Nam, Yong-Hwa Park, Dae-Seok Oh
  • Patent number: 7872709
    Abstract: An LCD device includes lower and upper substrates facing each other, a liquid crystal layer between the lower and upper substrates, a first polarizing plate on the upper substrate, a second polarizing plate below the lower substrate, and a backlight unit below the second polarizing plate. The second polarizing plate has a light-diffusion layer that is proximate to the backlight unit. The light-diffusion layer has projections that project towards and contact the backlight unit. These projections are smooth curves that do not damage the surface of the backlight unit. The total of the Haze formed by the first and second polarizing plates is at least 40%.
    Type: Grant
    Filed: December 8, 2008
    Date of Patent: January 18, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: June Ho Park, Sai Chang Yun
  • Publication number: 20100060812
    Abstract: A liquid crystal display panel capable of reducing a capacitance of a parasitic capacitor between a data line and a pixel electrode. The liquid crystal display panel comprises: a thin film transistor at a crossing of a gate line and a data line, liquid crystal cells including a pixel electrode connected to the thin film transistor; first shield patterns in the liquid crystal cells, each shield pattern being parallel to the data line without overlapping the data line, wherein the shield patterns are insulated from and overlap with an outer portion of the pixel electrode; and a common line arrayed to connect the shield patterns for each the liquid crystal cell.
    Type: Application
    Filed: November 16, 2009
    Publication date: March 11, 2010
    Inventors: Hong Sung Song, Sai Chang Yun, Sang Chang Yun, Jae Woo Lee
  • Patent number: 7633569
    Abstract: A liquid crystal display panel capable of reducing a capacitance of a parasitic capacitor between a data line and a pixel electrode. The liquid crystal display panel comprises: a thin film transistor at a crossing of a gate line and a data line, liquid crystal cells including a pixel electrode connected to the thin film transistor; first shield patterns in the liquid crystal cells, each shield pattern being parallel to the data line without overlapping the data line, wherein the shield patterns are insulated from and overlap with an outer portion of the pixel electrode; and a common line arrayed to connect the shield patterns for each the liquid crystal cell.
    Type: Grant
    Filed: November 1, 2007
    Date of Patent: December 15, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Hong Sung Song, Sai Chang Yun, Sang Chang Yun, Jae Woo Lee
  • Publication number: 20090153777
    Abstract: An LCD device includes lower and upper substrates facing each other, a liquid crystal layer between the lower and upper substrates, a first polarizing plate on the upper substrate, a second polarizing plate below the lower substrate, and a backlight unit below the second polarizing plate. The second polarizing plate has a light-diffusion layer that is proximate to the backlight unit. The light-diffusion layer has projections that project towards and contact the backlight unit. These projections are smooth curves that do not damage the surface of the backlight unit. The total of the Haze formed by the first and second polarizing plates is at least 40%.
    Type: Application
    Filed: December 8, 2008
    Publication date: June 18, 2009
    Inventors: June Ho Park, Sai Chang Yun
  • Patent number: 7477342
    Abstract: An LCD device includes lower and upper substrates facing each other, a liquid crystal layer between the lower and upper substrates, a first polarizing plate on the upper substrate, a second polarizing plate below the lower substrate, and a backlight unit below the second polarizing plate. The second polarizing plate has a light-diffusion layer that is proximate to the backlight unit. The light-diffusion layer has projections that project towards and contact the backlight unit. These projections are smooth curves that do not damage the surface of the backlight unit. The total of the Haze formed by the first and second polarizing plates is at least 40%.
    Type: Grant
    Filed: October 28, 2003
    Date of Patent: January 13, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: June Ho Park, Sai Chang Yun
  • Patent number: 7440067
    Abstract: A liquid crystal display (LCD) device is disclosed, which obtains a high aperture ratio and a wide viewing angle. The LCD device includes first and second substrates; a plurality ofgate and data lines on the first substrate to define a plurality of pixel regions; a pixel electrode in each pixel region; a common electrode on the second substrate, the common electrode having an electric field inducing window dividing each pixel region into at least two domains; an auxiliary electrode on the first substrate, the auxiliary electrode corresponding to the periphery of the pixel electrode in one of at least two domains; and a liquid crystal layer between the first and second substrates.
    Type: Grant
    Filed: April 4, 2007
    Date of Patent: October 21, 2008
    Assignee: LG Display Co., Ltd.
    Inventors: Sai Chang Yun, Do Sung Kim
  • Patent number: 7408607
    Abstract: A liquid crystal display device having a wide viewing angle and a high aperture ratio. The present invention includes first and second substrates, gate and data lines on the first substrate to define at least one pixel region, a thin film transistor formed at a crossing between the gate and data lines. A pixel electrode is connected to the thin film transistor in the pixel region, the pixel electrode having a first electric field inducing window. An auxiliary electrode is at a position corresponding to the first electric field inducing window. A black matrix layer is on the second substrate. A color filter layer is on the black matrix layer. A common electrode is on the color filter layer, the common electrode having a second electric field inducing window or dielectric protrusion at a position corresponding to an end portion of the pixel electrode. A liquid crystal layer is between the first and second substrates.
    Type: Grant
    Filed: November 22, 2002
    Date of Patent: August 5, 2008
    Assignee: LG Display Co., Ltd.
    Inventors: Sai Chang Yun, Kyo Seop Choo, Do Sung Kim, Hyung Beom Shin
  • Patent number: 7379147
    Abstract: A liquid crystal display includes driver integrated circuits for applying a video signal to data lines, output pins and at least one dummy output pin are arranged within each data driver integrated circuit, and a switching pin is arranged within each data driver integrated circuit for controlling whether or not the dummy output pin outputs a signal.
    Type: Grant
    Filed: September 20, 2005
    Date of Patent: May 27, 2008
    Assignee: LG.Philips LCD Co., Ltd
    Inventors: Sai Chang Yun, Hong Sung Song
  • Patent number: 7372512
    Abstract: A liquid crystal display employs an on-common storage capacitor which includes a lower storage electrode of a predetermined size provided in the same layer that a signal line is formed, and a pixel electrode provided on the lower storage electrode, and functioning as an upper storage electrode. A method of fabricating the liquid crystal display is also provided.
    Type: Grant
    Filed: December 27, 2002
    Date of Patent: May 13, 2008
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Sai Chang Yun, Jae Woo Lee
  • Patent number: 7304691
    Abstract: A liquid crystal display panel capable of reducing a capacitance of a parasitic capacitor between a data line and a pixel electrode. The liquid crystal display panel comprises: a thin film transistor at a crossing of a gate line and a data line, liquid crystal cells including a pixel electrode connected to the thin film transistor; first shield patterns in the liquid crystal cells, each shield pattern being parallel to the data line without overlapping the data line, wherein the shield patterns are insulated from and overlap with an outer portion of the pixel electrode; and a common line arrayed to connect the shield patterns for each the liquid crystal cell.
    Type: Grant
    Filed: June 24, 2004
    Date of Patent: December 4, 2007
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Hong Sung Song, Sai Chang Yun, Sang Chang Yun, Jae Woo Lee
  • Patent number: 7256858
    Abstract: A liquid crystal display includes driver integrated circuits for applying a video signal to data lines, output pins and at least one dummy output pin are arranged within each data driver integrated circuit, and a switching pin is arranged within each data driver integrated circuit for controlling whether or not the dummy output pin outputs a signal.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: August 14, 2007
    Assignee: LG.Philips LCD CO., Ltd.
    Inventors: Sai Chang Yun, Hong Sung Song
  • Patent number: 7215398
    Abstract: A liquid crystal display (LCD) device is disclosed, which obtains a high aperture ratio and a wide viewing angle. The LCD device includes first and second substrates; a plurality of gate and data lines on the first substrate to define a plurality of pixel regions; a pixel electrode in each pixel region; a common electrode on the second substrate, the common electrode having an electric field inducing window dividing each pixel region into at least two domains; an auxiliary electrode on the first substrate, the auxiliary electrode corresponding to the periphery of the pixel electrode in one of at least two domains; and a liquid crystal layer between the first and second substrates.
    Type: Grant
    Filed: April 3, 2003
    Date of Patent: May 8, 2007
    Assignee: L.G. Philips LCD Co., Ltd
    Inventors: Sai Chang Yun, Do Sung Kim
  • Publication number: 20060012743
    Abstract: A liquid crystal display includes driver integrated circuits for applying a video signal to data lines, output pins and at least one dummy output pin are arranged within each data driver integrated circuit, and a switching pin is arranged within each data driver integrated circuit for controlling whether or not the dummy output pin outputs a signal.
    Type: Application
    Filed: September 20, 2005
    Publication date: January 19, 2006
    Inventors: Sai Chang Yun, Hong Sung Song