Patents by Inventor Ung-Gyu Min
Ung-Gyu Min 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: 11640792Abstract: A method of driving a display device including a sensing line, a light-emitting element, a capacitor, and a driving transistor, the driving transistor comprising a control terminal that is connected to the capacitor, an input terminal, and an output terminal, the method including: connecting the control terminal and the output terminal; connecting the control terminal and the output terminal to a ground voltage and then disconnecting the control terminal and the output terminal from the ground voltage; sensing a first voltage of the control terminal through the sensing line; and calculating a threshold voltage of the driving transistor based on the first voltage.Type: GrantFiled: April 1, 2022Date of Patent: May 2, 2023Assignees: Samsung Display Co., Ltd., IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)Inventors: Ung-Gyu Min, Oh-Kyong Kwon
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Publication number: 20220223108Abstract: A method of driving a display device including a sensing line, a light-emitting element, a capacitor, and a driving transistor, the driving transistor comprising a control terminal that is connected to the capacitor, an input terminal, and an output terminal, the method including: connecting the control terminal and the output terminal; connecting the control terminal and the output terminal to a ground voltage and then disconnecting the control terminal and the output terminal from the ground voltage; sensing a first voltage of the control terminal through the sensing line; and calculating a threshold voltage of the driving transistor based on the first voltage.Type: ApplicationFiled: April 1, 2022Publication date: July 14, 2022Inventors: Ung-Gyu MIN, Oh-Kyong Kwon
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Patent number: 11315493Abstract: A method of driving a display device including a sensing line, a light-emitting element, a capacitor, and a driving transistor, the driving transistor comprising a control terminal that is connected to the capacitor, an input terminal, and an output terminal, the method including: connecting the control terminal and the output terminal; connecting the control terminal and the output terminal to a ground voltage and then disconnecting the control terminal and the output terminal from the ground voltage; sensing a first voltage of the control terminal through the sensing line; and calculating a threshold voltage of the driving transistor based on the first voltage.Type: GrantFiled: January 24, 2021Date of Patent: April 26, 2022Assignees: IUCF-HYU Industry-University Cooperation Foundation Hanyai, Samsung Display Co., Ltd.Inventors: Ung-Gyu Min, Oh-Kyong Kwon
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Publication number: 20210142730Abstract: A method of driving a display device including a sensing line, a light-emitting element, a capacitor, and a driving transistor, the driving transistor comprising a control terminal that is connected to the capacitor, an input terminal, and an output terminal, the method including: connecting the control terminal and the output terminal; connecting the control terminal and the output terminal to a ground voltage and then disconnecting the control terminal and the output terminal from the ground voltage; sensing a first voltage of the control terminal through the sensing line; and calculating a threshold voltage of the driving transistor based on the first voltage.Type: ApplicationFiled: January 24, 2021Publication date: May 13, 2021Inventors: Ung-Gyu Min, Oh-Kyong Kwon
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Patent number: 10902784Abstract: A method of driving a display device including a sensing line, a light-emitting element, a capacitor, and a driving transistor, the driving transistor comprising a control terminal that is connected to the capacitor, an input terminal, and an output terminal, the method including: connecting the control terminal and the output terminal; connecting the control terminal and the output terminal to a ground voltage and then disconnecting the control terminal and the output terminal from the ground voltage; sensing a first voltage of the control terminal through the sensing line; and calculating a threshold voltage of the driving transistor based on the first voltage.Type: GrantFiled: October 14, 2019Date of Patent: January 26, 2021Assignees: Samsung Display Co., Ltd., IUCF-HYU Industry-University Cooperation Foundation Hanyang UniversityInventors: Ung-Gyu Min, Oh-Kyong Kwon
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Publication number: 20200043416Abstract: A method of driving a display device including a sensing line, a light-emitting element, a capacitor, and a driving transistor, the driving transistor comprising a control terminal that is connected to the capacitor, an input terminal, and an output terminal, the method including: connecting the control terminal and the output terminal; connecting the control terminal and the output terminal to a ground voltage and then disconnecting the control terminal and the output terminal from the ground voltage; sensing a first voltage of the control terminal through the sensing line; and calculating a threshold voltage of the driving transistor based on the first voltage.Type: ApplicationFiled: October 14, 2019Publication date: February 6, 2020Inventors: Ung-Gyu MIN, Oh-Kyoung KWON
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Patent number: 10446084Abstract: A method of driving a display device including a sensing line, a light-emitting element, a capacitor, and a driving transistor, the driving transistor comprising a control terminal that is connected to the capacitor, an input terminal, and an output terminal, the method including: connecting the control terminal and the output terminal; connecting the control terminal and the output terminal to a ground voltage and then disconnecting the control terminal and the output terminal from the ground voltage; sensing a first voltage of the control terminal through the sensing line; and calculating a threshold voltage of the driving transistor based on the first voltage.Type: GrantFiled: December 18, 2018Date of Patent: October 15, 2019Assignees: Samsung Display Co., Ltd., IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)Inventors: Ung-Gyu Min, Oh-Kyoung Kwon
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Publication number: 20190122614Abstract: A method of driving a display device including a sensing line, a light-emitting element, a capacitor, and a driving transistor, the driving transistor comprising a control terminal that is connected to the capacitor, an input terminal, and an output terminal, the method including: connecting the control terminal and the output terminal; connecting the control terminal and the output terminal to a ground voltage and then disconnecting the control terminal and the output terminal from the ground voltage; sensing a first voltage of the control terminal through the sensing line; and calculating a threshold voltage of the driving transistor based on the first voltage.Type: ApplicationFiled: December 18, 2018Publication date: April 25, 2019Inventors: Ung-Gyu MIN, Oh-Kyoung KWON
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Patent number: 10176762Abstract: A method of driving a display device including a sensing line, a light-emitting element, a capacitor, and a driving transistor, the driving transistor comprising a control terminal that is connected to the capacitor, an input terminal, and an output terminal the method including: connecting the control terminal and the output terminal; connecting the control terminal and the output terminal to a ground voltage and then disconnecting the control terminal and the output terminal from the ground voltage; sensing a first voltage of the control terminal through the sensing line; and calculating a threshold voltage of the driving transistor based on the first voltage.Type: GrantFiled: November 29, 2017Date of Patent: January 8, 2019Assignee: Samsung Display Co., Ltd.Inventors: Ung-Gyu Min, Oh-Kyong Kwon
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Patent number: 9972237Abstract: A controller controls the driving frequency and voltages for a display device. If image data corresponds to a moving picture, the controller drives a data driver and a gate driver at a moving picture frequency. If image data corresponds to a still image, drives the data driver and the gate driver at a still image frequency lower frequency than the moving picture frequency. When the still image is to be displayed, the signal controller also controls leakage current of a thin film transistor of a pixel based on a representative value of the image data, such that positive leakage current applied for a positive data voltage is equal to negative leakage current applied for a negative data voltage.Type: GrantFiled: March 21, 2016Date of Patent: May 15, 2018Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Seok Ha Hong, Dae-Gwang Jang, Byung Sun Kim, Sang Mi Kim, Ung Gyu Min, Hyun Sik Hwang, Gi Geun Kim, Kyoung Won Lee
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Patent number: 9928772Abstract: A controller controls the driving frequency and voltages for a display device. If image data corresponds to a moving picture, the controller drives a data driver and a gate driver at a moving picture frequency. If image data corresponds to a still image, drives the data driver and the gate driver at a still image frequency lower frequency than the moving picture frequency. When the still image is to be displayed, the signal controller also controls leakage current of a thin film transistor of a pixel based on a representative value of the image data, such that positive leakage current applied for a positive data voltage is equal to negative leakage current applied for a negative data voltage.Type: GrantFiled: March 21, 2016Date of Patent: March 27, 2018Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Seok Ha Hong, Dae-Gwang Jang, Byung Sun Kim, Sang Mi Kim, Ung Gyu Min, Hyun Sik Hwang, Gi Geun Kim, Kyoung Won Lee
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Publication number: 20180082640Abstract: A method of driving a display device including a sensing line, a light-emitting element, a capacitor, and a driving transistor, the driving transistor comprising a control terminal that is connected to the capacitor, an input terminal, and an output terminal the method including: connecting the control terminal and the output terminal; connecting the control terminal and the output terminal to a ground voltage and then disconnecting the control terminal and the output terminal from the ground voltage; sensing a first voltage of the control terminal through the sensing line; and calculating a threshold voltage of the driving transistor based on the first voltage.Type: ApplicationFiled: November 29, 2017Publication date: March 22, 2018Inventors: Ung-Gyu Min, Oh-Kyong Kwon
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Patent number: 9852694Abstract: A method of driving a display device including a sensing line, a light-emitting element, a capacitor, and a driving transistor, the driving transistor comprising a control terminal that is connected to the capacitor, an input terminal, and an output terminal, the method including: connecting the control terminal and the output terminal; connecting the control terminal and the output terminal to a ground voltage and then disconnecting the control terminal and the output terminal from the ground voltage; sensing a first voltage of the control terminal through the sensing line; and calculating a threshold voltage of the driving transistor based on the first voltage.Type: GrantFiled: July 5, 2016Date of Patent: December 26, 2017Assignees: Samsung Display Co., Ltd., IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)Inventors: Ung-Gyu Min, Oh-Kyong Kwon
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Patent number: 9847063Abstract: A liquid crystal display includes: a display panel; a signal controller configured to receive an input image signal and an input control signal, output an output image signal and an output control signal, and determine a charge sharing between two or more data lines having voltages in the same polarity; and a data driver configured to convert, based on the output control signal, the image signal into data voltages to be supplied to the data lines connected to the pixels, the data voltages having positive levels and negative levels. The data driver is further configured to perform a first charge sharing by short-circuiting first and second data lines that are adjacent to each other, and a second charge sharing by short-circuiting third and fourth data lines having data voltages in the same polarity, wherein the first charge sharing and the second charge sharing may not temporally overlap with each other.Type: GrantFiled: October 24, 2014Date of Patent: December 19, 2017Assignee: Samsung Display Co., Ltd.Inventors: Su Hyeong Park, Ung Gyu Min, Ji Myoung Seo, Cheol Woo Park, Ho Yong Jung
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Patent number: 9613554Abstract: A driving method of a display device includes: determining each of a plurality of pixel rows of the display device as one of a motion picture display pixel row and a still image display pixel row by comparing image data of each of the pixel rows in a current frame and in a previous frame; and driving the motion picture display pixel row with a motion picture frequency and driving the still image display pixel row with a still image display frequency, which is lower than or equal to the motion picture frequency, where a plurality of still image display pixel rows are driven with at least two still image display frequencies.Type: GrantFiled: July 24, 2013Date of Patent: April 4, 2017Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Dae-Gwang Jang, Ung Gyu Min, Seok Ha Hong, Hyun Sik Hwang, Byung Sun Kim, Sang Mi Kim, Bong Hyun You, Ji Myoung Seo
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Publication number: 20160314744Abstract: A method of driving a display device including a sensing line, a light-emitting element, a capacitor, and a driving transistor, the driving transistor comprising a control terminal that is connected to the capacitor, an input terminal, and an output terminal, the method including: connecting the control terminal and the output terminal; connecting the control terminal and the output terminal to a ground voltage and then disconnecting the control terminal and the output terminal from the ground voltage; sensing a first voltage of the control terminal through the sensing line; and calculating a threshold voltage of the driving transistor based on the first voltage.Type: ApplicationFiled: July 5, 2016Publication date: October 27, 2016Inventors: Ung-Gyu MIN, Oh-Kyong KWON
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Publication number: 20160275852Abstract: A controller controls the driving frequency and voltages for a display device. If image data corresponds to a moving picture, the controller drives a data driver and a gate driver at a moving picture frequency. If image data corresponds to a still image, drives the data driver and the gate driver at a still image frequency lower frequency than the moving picture frequency. When the still image is to be displayed, the signal controller also controls leakage current of a thin film transistor of a pixel based on a representative value of the image data, such that positive leakage current applied for a positive data voltage is equal to negative leakage current applied for a negative data voltage.Type: ApplicationFiled: March 21, 2016Publication date: September 22, 2016Inventors: Seok Ha HONG, Dae-Gwang JANG, Byung Sun KIM, Sang Mi KIM, Ung Gyu MIN, Hyun Sik HWANG, Gi Geun KIM, Kyoung Won LEE
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Patent number: 9390656Abstract: A display device includes a plurality of display pixels, a plurality of data lines that are connected to the display pixels, and a plurality of sensing lines that are connected to the display pixels. Each display pixel includes a driving transistor comprising a first terminal, a second terminal, and a third terminal, a capacitor connected to the first terminal of the driving transistor, a first switching transistor connected to the data line and the first terminal of the driving transistor, a light-emitting element connected to the third terminal of the driving transistor configured to emit light, a second switching transistor connected between the sensing line and the light-emitting element, and a third switching transistor connected between the third terminal of the driving transistor and the light-emitting element.Type: GrantFiled: August 14, 2015Date of Patent: July 12, 2016Assignee: Samsung Display Co., Ltd.Inventors: Ung-Gyu Min, Oh-Kyong Kwon
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Patent number: 9293106Abstract: A controller controls the driving frequency and voltages for a display device. If image data corresponds to a moving picture, the controller drives a data driver and a gate driver at a moving picture frequency. If image data corresponds to a still image, drives the data driver and the gate driver at a still image frequency lower frequency than the moving picture frequency. When the still image is to be displayed, the signal controller also controls leakage current of a thin film transistor of a pixel based on a representative value of the image data, such that positive leakage current applied for a positive data voltage is equal to negative leakage current applied for a negative data voltage.Type: GrantFiled: January 3, 2014Date of Patent: March 22, 2016Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Seok Ha Hong, Dae-Gwang Jang, Byung Sun Kim, Sang Mi Kim, Ung Gyu Min, Hyun Sik Hwang, Gi Geun Kim, Kyoung Won Lee
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Patent number: 9253479Abstract: To display at least one three-dimensional (3D) image in a two-dimensional (2D) image display area, a method and apparatus is provided for distinguishing a 3D image display area, in which the at least one 3D image is displayed, from the 2D image display area, and displaying a 2D image and a 3D image in the 2D image display area and the 3D image display area, respectively, thereby improving display resolution.Type: GrantFiled: August 12, 2011Date of Patent: February 2, 2016Assignee: Samsung Display Co., Ltd.Inventors: Hae-Young Yun, Ung-Gyu Min, Myung-Hwan Kim