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).
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Patent number: 9330618Abstract: 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: GrantFiled: October 14, 2013Date of Patent: May 3, 2016Assignee: LG Display Co., Ltd.Inventors: Sai-Chang Yun, You-Sung Nam, Si-Hyun Kim, Nak-Yoon Kim
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Publication number: 20140306872Abstract: 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: ApplicationFiled: October 14, 2013Publication date: October 16, 2014Applicant: LG DISPLAY CO., LTD.Inventors: Sai-Chang YUN, You-Sung NAM, Si-Hyun KIM, Nak-Yoon KIM
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Patent number: 8670097Abstract: 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: GrantFiled: December 28, 2010Date of Patent: March 11, 2014Assignee: LG Display Co., Ltd.Inventors: Sai-Chang Yun, Seung-Ho Heo, You-Sung Nam, Yong-Hwa Park, Dae-Seok Oh
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Patent number: 8654269Abstract: 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: GrantFiled: July 2, 2012Date of Patent: February 18, 2014Assignee: LG Display Co., Ltd.Inventors: Hong Sung Song, Sai Chang Yun, Sang Chang Yun, Jae Woo Lee
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Publication number: 20120268679Abstract: 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: ApplicationFiled: July 2, 2012Publication date: October 25, 2012Inventors: Hong Sung SONG, Sai Chang Yun, Sang Chang Yun, Jae Woo Lee
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Patent number: 8212952Abstract: 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: GrantFiled: November 16, 2009Date of Patent: July 3, 2012Assignee: LG Display Co., Ltd.Inventors: Hong Sung Song, Sai Chang Yun, Sang Chang Yun, Jae Woo Lee
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Publication number: 20110249210Abstract: 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: ApplicationFiled: December 28, 2010Publication date: October 13, 2011Inventors: Sai-Chang YUN, Seung-Ho Heo, You-Sung Nam, Yong-Hwa Park, Dae-Seok Oh
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Patent number: 7872709Abstract: 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: GrantFiled: December 8, 2008Date of Patent: January 18, 2011Assignee: LG Display Co., Ltd.Inventors: June Ho Park, Sai Chang Yun
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Publication number: 20100060812Abstract: 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: ApplicationFiled: November 16, 2009Publication date: March 11, 2010Inventors: Hong Sung Song, Sai Chang Yun, Sang Chang Yun, Jae Woo Lee
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Patent number: 7633569Abstract: 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: GrantFiled: November 1, 2007Date of Patent: December 15, 2009Assignee: LG Display Co., Ltd.Inventors: Hong Sung Song, Sai Chang Yun, Sang Chang Yun, Jae Woo Lee
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Publication number: 20090153777Abstract: 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: ApplicationFiled: December 8, 2008Publication date: June 18, 2009Inventors: June Ho Park, Sai Chang Yun
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Patent number: 7477342Abstract: 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: GrantFiled: October 28, 2003Date of Patent: January 13, 2009Assignee: LG Display Co., Ltd.Inventors: June Ho Park, Sai Chang Yun
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Patent number: 7440067Abstract: 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: GrantFiled: April 4, 2007Date of Patent: October 21, 2008Assignee: LG Display Co., Ltd.Inventors: Sai Chang Yun, Do Sung Kim
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Patent number: 7408607Abstract: 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: GrantFiled: November 22, 2002Date of Patent: August 5, 2008Assignee: LG Display Co., Ltd.Inventors: Sai Chang Yun, Kyo Seop Choo, Do Sung Kim, Hyung Beom Shin
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Patent number: 7379147Abstract: 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: GrantFiled: September 20, 2005Date of Patent: May 27, 2008Assignee: LG.Philips LCD Co., LtdInventors: Sai Chang Yun, Hong Sung Song
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Patent number: 7372512Abstract: 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: GrantFiled: December 27, 2002Date of Patent: May 13, 2008Assignee: LG.Philips LCD Co., Ltd.Inventors: Sai Chang Yun, Jae Woo Lee
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Patent number: 7304691Abstract: 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: GrantFiled: June 24, 2004Date of Patent: December 4, 2007Assignee: LG.Philips LCD Co., Ltd.Inventors: Hong Sung Song, Sai Chang Yun, Sang Chang Yun, Jae Woo Lee
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Patent number: 7256858Abstract: 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: GrantFiled: December 13, 2002Date of Patent: August 14, 2007Assignee: LG.Philips LCD CO., Ltd.Inventors: Sai Chang Yun, Hong Sung Song
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Patent number: 7215398Abstract: 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: GrantFiled: April 3, 2003Date of Patent: May 8, 2007Assignee: L.G. Philips LCD Co., LtdInventors: Sai Chang Yun, Do Sung Kim
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Publication number: 20060012743Abstract: 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: ApplicationFiled: September 20, 2005Publication date: January 19, 2006Inventors: Sai Chang Yun, Hong Sung Song