Patents by Inventor Moon-Soo Chung
Moon-Soo Chung 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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Publication number: 20250118263Abstract: Disclosed a display device and a method of driving the same. Each of sub-pixels in the display device includes: a light-emitting element; a driving element; a first switch element; a second switch element; a third switch element; and a fourth switch element. A gate signal includes: a first-first scan signal applied to a gate electrode of the fourth switch element, a first-second scan signal applied to a gate electrode of the third switch element, a second scan signal applied to a gate electrode of the second switch element, and an emission control signal applied to a gate electrode of the first switch element. A pulse of the first-first scan signal has the same pulse width as a pulse of the first-second scan signal and precedes the pulse of the first-second scan signal.Type: ApplicationFiled: May 23, 2024Publication date: April 10, 2025Inventors: Woo Kyu Sang, Moon Soo Chung, Tae Hun Kim
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Publication number: 20250118268Abstract: A display device including a display panel including data lines, gate lines, power lines, and sub-pixels; a gate driver to supply a gate signal to the gate lines; a data driver configured to supply a data voltage to the data lines during a refresh frame period prior to a hold frame period; and a compensation voltage generator configured to during the hold frame period, output a first compensation voltage to the data lines instead of the data voltage supplied by the data driver, and output a second compensation voltage and a third compensation voltage to the power lines connected to the sub-pixels, and during the refresh frame period, output the second compensation voltage and the third compensation voltage to the power lines without outputting the first compensation voltage.Type: ApplicationFiled: August 23, 2024Publication date: April 10, 2025Applicant: LG Display Co., Ltd.Inventors: Woo Kyu SANG, Moon Soo CHUNG, Tae Hun KIM
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Patent number: 12094420Abstract: Provided are a gate driving circuit and a display device including the same. The gate driving circuit includes a first outputter for outputting a first scan pulse that swings between a gate-on voltage and a first gate-off voltage, a second outputter for outputting a second scan pulse that swings between the gate-on voltage and a second gate-off voltage, and a controller for controlling the first and second outputters. The first gate-off voltage is set to be higher or lower than the second gate-off voltage.Type: GrantFiled: September 26, 2022Date of Patent: September 17, 2024Assignee: LG Display Co., Ltd.Inventors: Kyu Jin Kim, Moon Soo Chung
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Patent number: 12039940Abstract: A light-emitting display device includes a display panel including a plurality of subpixels each including a light-emitting element, a data driver configured to supply a data voltage and a reset voltage to each of the subpixels, and a scan driver configured to output an emission signal for controlling a non-emission period and an emission period of the light-emitting element and a reset signal for controlling a reset period of each of the subpixels, wherein the scan driver outputs the emission signal a plurality of times in one frame period and outputs the reset signal a plurality of times in a non-emission period according to the emission signal, and at least one of a plurality of emission signals or a plurality of reset signals has at least one of a different delay period or a different pulse width.Type: GrantFiled: June 16, 2023Date of Patent: July 16, 2024Assignee: LG Display Co., Ltd.Inventors: Woo Kyu Sang, Moon Soo Chung, Tae Hun Kim
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Publication number: 20240161705Abstract: A light-emitting display device includes a display panel including a plurality of subpixels each including a light-emitting element, a data driver configured to supply a data voltage and a reset voltage to each of the subpixels, and a scan driver configured to output an emission signal for controlling a non-emission period and an emission period of the light-emitting element and a reset signal for controlling a reset period of each of the subpixels, wherein the scan driver outputs the emission signal a plurality of times in one frame period and outputs the reset signal a plurality of times in a non-emission period according to the emission signal, and at least one of a plurality of emission signals or a plurality of reset signals has at least one of a different delay period or a different pulse width.Type: ApplicationFiled: June 16, 2023Publication date: May 16, 2024Inventors: Woo Kyu SANG, Moon Soo CHUNG, Tae Hun KIM
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Patent number: 11935482Abstract: A pixel circuit includes a first switch element turned on by a gate-on voltage of a first scan pulse to apply a data voltage to a first node; a second switch element turned on by a gate-on voltage of a second scan pulse to connect a second node to a third node; a third switch element turned on by a gate-on voltage of a light-emitting control pulse to apply a reference voltage to the first node; a fourth switch element turned on by the gate-on voltage of the light-emitting control pulse to connect the third node to a fourth node; and a fifth switch element turned on by a gate-on voltage of the second scan pulse to apply the reference voltage to the fourth node. A voltage higher than or equal to the pixel driving voltage is applied to the third node before generation of the first scan pulse.Type: GrantFiled: September 27, 2022Date of Patent: March 19, 2024Assignee: LG Display Co., Ltd.Inventors: Woo Kyu Sang, Moon Soo Chung
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Publication number: 20230097941Abstract: A pixel circuit includes a first switch element turned on by a gate-on voltage of a first scan pulse to apply a data voltage to a first node; a second switch element turned on by a gate-on voltage of a second scan pulse to connect a second node to a third node; a third switch element turned on by a gate-on voltage of a light-emitting control pulse to apply a reference voltage to the first node; a fourth switch element turned on by the gate-on voltage of the light-emitting control pulse to connect the third node to a fourth node; and a fifth switch element turned on by a gate-on voltage of the second scan pulse to apply the reference voltage to the fourth node. A voltage higher than or equal to the pixel driving voltage is applied to the third node before generation of the first scan pulse.Type: ApplicationFiled: September 27, 2022Publication date: March 30, 2023Applicant: LG DISPLAY CO., LTD.Inventors: Woo Kyu SANG, Moon Soo CHUNG
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Publication number: 20230096265Abstract: Provided are a gate driving circuit and a display device including the same. The gate driving circuit includes a first outputter for outputting a first scan pulse that swings between a gate-on voltage and a first gate-off voltage, a second outputter for outputting a second scan pulse that swings between the gate-on voltage and a second gate-off voltage, and a controller for controlling the first and second outputters. The first gate-off voltage is set to be higher or lower than the second gate-off voltage.Type: ApplicationFiled: September 26, 2022Publication date: March 30, 2023Applicant: LG DISPLAY CO., LTD.Inventors: Kyu Jin KIM, Moon Soo CHUNG
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Patent number: 9953575Abstract: Disclosed is a method of driving a display device that includes, for example, generating a gate control signal, a data control signal and an image data using an image signal; generating a data voltage using the data control signal and the image data; generating a gate voltage using the gate control signal; and sequentially applying the gate voltage of a high level to q groups of the plurality of gate lines during q frames, respectively, where q is an integer greater than 1.Type: GrantFiled: December 2, 2015Date of Patent: April 24, 2018Assignee: LG DISPLAY CO., LTD.Inventors: Dae-Seok Oh, Moon-Soo Chung
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Patent number: 9747859Abstract: A liquid crystal display (LCD) device are disclosed, which reduce power consumption and improve an image quality. The LCD device includes a liquid crystal panel in which a plurality of sub-pixels is defined by intersection of a plurality of gate lines and a plurality of data lines, and sub-pixels adjacent to each other in a column direction are connected by sharing the plurality of gate lines. A gate driver may sequentially transfer a scan pulse to even-numbered gate lines and then sequentially transferring a scan pulse to odd-numbered gate lines. A data driver may be synchronized with the applied scan pulse in providing data voltage to columns of sub-pixels. The data driver provides the data voltage having different polarities to a neighbor data line during one frame interval such that sub-pixels are driven by a horizontal 2-dot inversion scheme.Type: GrantFiled: June 20, 2013Date of Patent: August 29, 2017Assignee: LG DISPLAY CO., LTD.Inventors: You-Sung Nam, Moon-Soo Chung
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Publication number: 20160189616Abstract: Disclosed is a method of driving a display device that includes, for example, generating a gate control signal, a data control signal and an image data using an image signal; generating a data voltage using the data control signal and the image data; generating a gate voltage using the gate control signal; and sequentially applying the gate voltage of a high level to q groups of the plurality of gate lines during q frames, respectively, where q is an integer greater than 1.Type: ApplicationFiled: December 2, 2015Publication date: June 30, 2016Inventors: Dae-Seok OH, Moon-Soo CHUNG
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Publication number: 20140009458Abstract: A liquid crystal display (LCD) device and a method for driving the same are disclosed, which reduce power consumption and improve an image quality. The LCD device includes a liquid crystal panel in which a plurality of sub-pixels is defined by intersection of a plurality of gate lines and a plurality of data lines, and sub-pixels adjacent to each other in a column direction are connected by sharing the plurality of gate lines. A gate driver may sequentially transfer a scan pulse to even-numbered gate lines and then sequentially transferring a scan pulse to odd-numbered gate lines. A data driver may be synchronized with the applied scan pulse in providing data voltage to columns of sub-pixels. The data driver provides the data voltage having different polarities to a neighbor data line during one frame interval such that sub-pixels are driven by a horizontal 2-dot inversion scheme.Type: ApplicationFiled: June 20, 2013Publication date: January 9, 2014Inventors: You-Sung Nam, Moon-Soo Chung