Patents by Inventor Kyohyuck Choo
Kyohyuck Choo 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: 8842138Abstract: Disclosed are a liquid crystal display and a method of the liquid crystal display. The liquid crystal display includes a liquid crystal panel, a backlight unit that supplies light to the liquid crystal panel and has a plurality of light sources, and an image calibration unit that calculates a global dimming resultant value and a local dimming resultant value for an image data signal inputted to the liquid crystal panel, analyzes an average picture level for each block with respect to the image data signal, and determines a convex combination parameter based on the global dimming resultant value, the local dimming resultant value, and the average picture level to generate a calibration dimming value for the backlight unit and an image calibration value for the image data signal.Type: GrantFiled: July 2, 2010Date of Patent: September 23, 2014Assignee: LG Display Co., Ltd.Inventors: Junghwan Lee, Euiyeol Oh, Kyungjoon Kwon, Kyohyuck Choo, Changkyun Park
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Patent number: 8432370Abstract: A liquid crystal display is disclosed. The liquid crystal display includes a liquid crystal display panel including a pixel array and touch sensors, a transparent conductive layer on one substrate of the liquid crystal display panel transmitting display light, a polarizing plate on the transparent conductive layer, a driving voltage supply circuit, and a signal transmitting unit electrically connecting the transparent conductive layer to the driving voltage supply circuit. A portion of the transparent conductive layer is connected to a ground level voltage source. The driving voltage supply circuit generates a driving voltage required to perform light sensing operations of the touch sensors during a touch period based on changes in an amount of surface charge of the transparent conductive layer depending on whether or not the polarizing plate is touched.Type: GrantFiled: April 20, 2012Date of Patent: April 30, 2013Assignee: LG Display Co., Ltd.Inventors: Changkeun Park, Suhwan Moon, Minkyung Lee, Deuksu Lee, Taehwan Kim, Miyoung Do, Kyohyuck Choo, Ilho Kim, Shinkwon Park
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Patent number: 8427448Abstract: A liquid crystal display is disclosed. The liquid crystal display includes a liquid crystal display panel including a pixel array and touch sensors, a transparent conductive layer on one substrate of the liquid crystal display panel transmitting display light, a polarizing plate on the transparent conductive layer, a driving voltage supply circuit, and a signal transmitting unit electrically connecting the transparent conductive layer to the driving voltage supply circuit. A portion of the transparent conductive layer is connected to a ground level voltage source. The driving voltage supply circuit generates a driving voltage required to perform light sensing operations of the touch sensors during a touch period based on changes in an amount of surface charge of the transparent conductive layer depending on whether or not the polarizing plate is touched.Type: GrantFiled: April 20, 2012Date of Patent: April 23, 2013Assignee: LG Display Co., Ltd.Inventors: Changkeun Park, Suhwan Moon, Minkyung Lee, Deuksu Lee, Taehwan Kim, Miyoung Do, Kyohyuck Choo, Ilho Kim, Shinkwon Park
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Patent number: 8355006Abstract: A liquid crystal display is disclosed. The liquid crystal display includes a liquid crystal display panel including a pixel array and touch sensors, a transparent conductive layer on one substrate of the liquid crystal display panel transmitting display light, a polarizing plate on the transparent conductive layer, a driving voltage supply circuit, and a signal transmitting unit electrically connecting the transparent conductive layer to the driving voltage supply circuit. A portion of the transparent conductive layer is connected to a ground level voltage source. The driving voltage supply circuit generates a driving voltage required to perform light sensing operations of the touch sensors during a touch period based on changes in an amount of surface charge of the transparent conductive layer depending on whether or not the polarizing plate is touched.Type: GrantFiled: December 29, 2008Date of Patent: January 15, 2013Assignee: LG Display Co., Ltd.Inventors: Changkeun Park, Suhwan Moon, Minkyung Lee, Deuksu Lee, Taehwan Kim, Miyoung Do, Kyohyuck Choo, Ilho Kim, Shinkwon Park
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Publication number: 20120206412Abstract: A liquid crystal display is disclosed. The liquid crystal display includes a liquid crystal display panel including a pixel array and touch sensors, a transparent conductive layer on one substrate of the liquid crystal display panel transmitting display light, a polarizing plate on the transparent conductive layer, a driving voltage supply circuit, and a signal transmitting unit electrically connecting the transparent conductive layer to the driving voltage supply circuit. A portion of the transparent conductive layer is connected to a ground level voltage source. The driving voltage supply circuit generates a driving voltage required to perform light sensing operations of the touch sensors during a touch period based on changes in an amount of surface charge of the transparent conductive layer depending on whether or not the polarizing plate is touched.Type: ApplicationFiled: April 20, 2012Publication date: August 16, 2012Inventors: Changkeun Park, Suhwan Moon, Minkyung Lee, Deuksu Lee, Taehwan Kim, Miyoung Do, Kyohyuck Choo, Ilho Kim, Shinkwon Park
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Publication number: 20120206411Abstract: A liquid crystal display is disclosed. The liquid crystal display includes a liquid crystal display panel including a pixel array and touch sensors, a transparent conductive layer on one substrate of the liquid crystal display panel transmitting display light, a polarizing plate on the transparent conductive layer, a driving voltage supply circuit, and a signal transmitting unit electrically connecting the transparent conductive layer to the driving voltage supply circuit. A portion of the transparent conductive layer is connected to a ground level voltage source. The driving voltage supply circuit generates a driving voltage required to perform light sensing operations of the touch sensors during a touch period based on changes in an amount of surface charge of the transparent conductive layer depending on whether or not the polarizing plate is touched.Type: ApplicationFiled: April 20, 2012Publication date: August 16, 2012Inventors: Changkeun Park, Suhwan Moon, Minkyung Lee, Deuksu Lee, Taehwan Kim, Miyoung Do, Kyohyuck Choo, Ilho Kim, Shinkwon Park
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Publication number: 20110122168Abstract: Disclosed are a liquid crystal display and a method of the liquid crystal display. The liquid crystal display includes a liquid crystal panel, a backlight unit that supplies light to the liquid crystal panel and has a plurality of light sources, and an image calibration unit that calculates a global dimming resultant value and a local dimming resultant value for an image data signal inputted to the liquid crystal panel, analyzes an average picture level for each block with respect to the image data signal, and determines a convex combination parameter based on the global dimming resultant value, the local dimming resultant value, and the average picture level to generate a calibration dimming value for the backlight unit and an image calibration value for the image data signal.Type: ApplicationFiled: July 2, 2010Publication date: May 26, 2011Inventors: Junghwan LEE, Euiyeol OH, Kyungjoon KWON, Kyohyuck CHOO, Changkyun PARK
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Publication number: 20090315840Abstract: A liquid crystal display is disclosed. The liquid crystal display includes a liquid crystal display panel including a pixel array and touch sensors, a transparent conductive layer on one substrate of the liquid crystal display panel transmitting display light, a polarizing plate on the transparent conductive layer, a driving voltage supply circuit, and a signal transmitting unit electrically connecting the transparent conductive layer to the driving voltage supply circuit. A portion of the transparent conductive layer is connected to a ground level voltage source. The driving voltage supply circuit generates a driving voltage required to perform light sensing operations of the touch sensors during a touch period based on changes in an amount of surface charge of the transparent conductive layer depending on whether or not the polarizing plate is touched.Type: ApplicationFiled: December 29, 2008Publication date: December 24, 2009Inventors: Changkeun Park, Suhwan Moon, Minkyung Lee, Deuksu Lee, Taehwan Kim, Miyoung Do, Kyohyuck Choo, Ilho Kim, Shinkwon Park