Patents by Inventor Neung-Beom Lee
Neung-Beom Lee 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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Gate driver, display apparatus including the same and method of driving display panel using the same
Patent number: 11094276Abstract: A gate driver includes a gate signal generating part, a switching part and a switching controlling part. The gate signal generating part is configured to generate a gate signal including a precharge time and a normal charge time using a compensated gate on voltage and a gate off voltage. The switching part is disposed between the gate signal generating part and a gate line. The switching part is configured to apply a compensated gate signal to the gate line. The switching controlling part is configured to generate a switching control signal for controlling an operation of the switching part.Type: GrantFiled: November 18, 2019Date of Patent: August 17, 2021Inventors: Jong-Hyun Sim, Neung-Beom Lee, Dong-Joon Kwag, Soo-Yeon Kim, Jeong-Hyun Kim, Hyeon-Uk Won, Ji-Ye Lee, Hyeon-Woo Hwang -
Patent number: 11030967Abstract: A display device includes an image analyzing part which determines whether current frame image data includes a crosstalk pattern, and a gamma voltage generator which generates current frame gamma data by applying the asymmetric gamma when the current frame image data do not include the crosstalk pattern, and generates the current frame gamma data by applying a symmetric gamma when the current frame image data includes the crosstalk pattern. The positive polarity and negative polarity data voltages of the asymmetric gamma are asymmetric with each other for each of the grayscales, and the positive polarity and negative polarity data voltages of the symmetric gamma are symmetric with each other for each of the grayscales.Type: GrantFiled: May 2, 2019Date of Patent: June 8, 2021Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Kyunho Kim, Bonggyun Kang, Sungjin Kim, Neung-Beom Lee, Jun Pyo Lee
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Patent number: 10957265Abstract: A display apparatus includes a display panel including display blocks, where each of the display blocks includes a plurality of pixels, a gate driver which outputs gate signals to the pixels, a data driver which receives image data and outputs data voltages corresponding to the image data to the pixels, and a timing controller which converts an image signal input thereto, outputs the converted image signal to the data driver as the image data, and controls a driving timing of the gate driver and the data driver. The timing controller controls output timings of at least data voltages output to pixels of a predetermined display block among the data voltages provided to the pixels of the display blocks, depending on a color pattern of the image signal corresponding to the pixels of the predetermined display block.Type: GrantFiled: June 19, 2018Date of Patent: March 23, 2021Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Neung-beom Lee, Junpyo Lee, Sangan Kwon, Kyunho Kim, Sungjin Kim, Yong-jin Shin, Shimho Yi, Kyung-hwa Lim
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Patent number: 10937353Abstract: A display apparatus includes a display panel including a plurality of gate lines, a plurality of data lines, and a plurality of subpixels, the subpixels being connected to the gate lines and the data lines, a driving controller configured to analyze input image data and to determine a driving mode from among one of a first driving mode and a second driving mode, a gate driver configured to output gate signals having timings different from one another to the gate lines in the first driving mode and to output gate signals having the same timing to at least two gate lines in the second driving mode, and a data driver configured to output data voltages to the data lines.Type: GrantFiled: August 20, 2019Date of Patent: March 2, 2021Assignee: Samsung Display Co., Ltd.Inventors: Kyunho Kim, Sangan Kwon, Neung-Beom Lee, Jun Pyo Lee, Sungjin Kim, Ukjae Jang
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Patent number: 10847113Abstract: A method of driving a liquid crystal display panel is provided. The liquid crystal display panel includes: a liquid crystal display pixel including a liquid crystal structure including a pixel electrode, a liquid crystal layer, and a common electrode; a switching transistor connected between the pixel electrode of the liquid crystal structure and a data-line; and a storage capacitor connected to the pixel electrode of the liquid crystal structure. The method includes: calculating an accumulated driving time of the liquid crystal display panel by accumulating a driving time of the liquid crystal display panel; determining whether or not the accumulated driving time has reached a deterioration reference time; and when the accumulated driving time is determined to have reached the deterioration reference time, changing a gate-off voltage applied to a gate terminal of the switching transistor and a common voltage applied to the common electrode.Type: GrantFiled: January 31, 2019Date of Patent: November 24, 2020Assignee: Samsung Display Co., Ltd.Inventors: Sangan Kwon, Junpyo Lee, Kyunho Kim, Sungjin Kim, Yong-Jin Shin, Neung-Beom Lee, Kyung-Hwa Lim, Jinhyuk Jang
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Patent number: 10650772Abstract: A display device includes: a display panel comprising a display area configured to display an image, wherein the display area includes a measurement area including a plurality of sub-measurement areas, and each of the plurality of sub-measurement areas includes a plurality of pre-map areas; a data driver configured to provide data voltages to the display panel; a signal controller; and a common voltage generator configured to provide a common voltage to the display panel, wherein an afterimage reduction mode is driven to change a level of the common voltage provided by the common voltage generator when the determined pre-map areas are adjacent to each other.Type: GrantFiled: October 22, 2018Date of Patent: May 12, 2020Assignee: Samsung Display Co., Ltd.Inventors: Sangan Kwon, Junpyo Lee, Kyunho Kim, Sungjin Kim, Yong-jin Shin, Neung-beom Lee, Kyung-hwa Lim, Myungbo Sim, Jinhyuk Jang
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GATE DRIVER, DISPLAY APPARATUS INCLUDING THE SAME AND METHOD OF DRIVING DISPLAY PANEL USING THE SAME
Publication number: 20200135129Abstract: A gate driver includes a gate signal generating part, a switching part and a switching controlling part. The gate signal generating part is configured to generate a gate signal including a precharge time and a normal charge time using a compensated gate on voltage and a gate off voltage. The switching part is disposed between the gate signal generating part and a gate line. The switching part is configured to apply a compensated gate signal to the gate line. The switching controlling part is configured to generate a switching control signal for controlling an operation of the switching part.Type: ApplicationFiled: November 18, 2019Publication date: April 30, 2020Inventors: Jong-Hyun SIM, Neung-Beom LEE, Dong-Joon KWAG, Soo-Yeon KIM, Jeong-Hyun KIM, Hyeon-Uk WON, Ji-Ye LEE, Hyeon-Woo HWANG -
Publication number: 20200118476Abstract: A display apparatus includes a display panel including a plurality of gate lines, a plurality of data lines, and a plurality of subpixels, the subpixels being connected to the gate lines and the data lines, a driving controller configured to analyze input image data and to determine a driving mode from among one of a first driving mode and a second driving mode, a gate driver configured to output gate signals having timings different from one another to the gate lines in the first driving mode and to output gate signals having the same timing to at least two gate lines in the second driving mode, and a data driver configured to output data voltages to the data lines.Type: ApplicationFiled: August 20, 2019Publication date: April 16, 2020Inventors: Kyunho KIM, Sangan KWON, Neung-Beom LEE, Jun Pyo LEE, Sungjin KIM, Ukjae JANG
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Publication number: 20200035173Abstract: A display device includes an image analyzing part which determines whether current frame image data includes a crosstalk pattern, and a gamma voltage generator which generates current frame gamma data by applying the asymmetric gamma when the current frame image data do not include the crosstalk pattern, and generates the current frame gamma data by applying a symmetric gamma when the current frame image data includes the crosstalk pattern. The positive polarity and negative polarity data voltages of the asymmetric gamma are asymmetric with each other for each of the grayscales, and the positive polarity and negative polarity data voltages of the symmetric gamma are symmetric with each other for each of the grayscales.Type: ApplicationFiled: May 2, 2019Publication date: January 30, 2020Inventors: Kyunho KIM, Bonggyun KANG, Sungjin KIM, Neung-Beom LEE, Jun Pyo LEE
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Publication number: 20200027418Abstract: A display device includes a display panel including a plurality of pixels, a voltage generator which generates a gate on voltage having a first voltage level that satisfies a target charging ratio of a pixel of the plurality of pixels, a voltage controller which receives an image signal and generates a voltage control signal when the image signal includes a predetermined reference pattern, a gate driver which generates a gate signal provided to the plurality of pixels based on the gate on voltage, a data driver which generates a data signal provided to the of the plurality of pixels based on the image signal, and a timing controller which generates control signals that control the gate driver and the data driver. The voltage generator changes the gate on voltage to have a second voltage level lower than the first voltage level based on the voltage control signal.Type: ApplicationFiled: May 2, 2019Publication date: January 23, 2020Inventors: Kyunho KIM, Sangan KWON, Sungjin KIM, Subin PARK, Neung-Beom LEE
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Gate driver, display apparatus including the same and method of driving display panel using the same
Patent number: 10510312Abstract: A gate driver includes a gate signal generating part, a switching part and a switching controlling part. The gate signal generating part is configured to generate a gate signal including a precharge time and a normal charge time using a compensated gate on voltage and a gate off voltage. The switching part is disposed between the gate signal generating part and a gate line. The switching part is configured to apply a compensated gate signal to the gate line. The switching controlling part is configured to generate a switching control signal for controlling an operation of the switching part.Type: GrantFiled: July 21, 2015Date of Patent: December 17, 2019Assignee: Samsung Display Co., Ltd.Inventors: Jong-Hyun Sim, Neung-Beom Lee, Dong-Joon Kwag, Soo-Yeon Kim, Jeong-Hyun Kim, Hyeon-Uk Won, Ji-Ye Lee, Hyeon-Woo Hwang -
Publication number: 20190244580Abstract: A method of driving a liquid crystal display panel is provided. The liquid crystal display panel includes: a liquid crystal display pixel including a liquid crystal structure including a pixel electrode, a liquid crystal layer, and a common electrode; a switching transistor connected between the pixel electrode of the liquid crystal structure and a data-line; and a storage capacitor connected to the pixel electrode of the liquid crystal structure. The method includes: calculating an accumulated driving time of the liquid crystal display panel by accumulating a driving time of the liquid crystal display panel; determining whether or not the accumulated driving time has reached a deterioration reference time; and when the accumulated driving time is determined to have reached the deterioration reference time, changing a gate-off voltage applied to a gate terminal of the switching transistor and a common voltage applied to the common electrode.Type: ApplicationFiled: January 31, 2019Publication date: August 8, 2019Inventors: Sangan KWON, Junpyo LEE, Kyunho KIM, Sungjin KIM, Yong-Jin SHIN, Neung-Beom LEE, Kyung-Hwa LIM, Jinhyuk JANG
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Patent number: 10319328Abstract: A display device and method is provided that permits selection of a first lookup table or a second lookup table to operate the data driver at respectively different temperatures to prevent heat from damaging the display device. The display device includes a detector which detects the number of toggles in which the amount of change in gray values of successive pixels driven by the same data line in one frame is equal to or greater than a reference gray change amount. A comparator compares the number of toggles detected by the detector with a reference number of toggles, and a lookup table selector which selects any one of a first lookup table and a second lookup table based on the comparison result of the comparator and provides the selected first lookup table or second lookup table to a data driver.Type: GrantFiled: November 1, 2017Date of Patent: June 11, 2019Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Kyun Ho Kim, Bong Gyun Kang, Sang An Kwon, Seung Hwan Moon, Yong Jin Shin, Neung Beom Lee, Jun Pyo Lee, Kyung Hwa Lim
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Publication number: 20190122630Abstract: A display device includes: a display panel comprising a display area configured to display an image, wherein the display area includes a measurement area including a plurality of sub-measurement areas, and each of the plurality of sub-measurement areas includes a plurality of pre-map areas; a data driver configured to provide data voltages to the display panel; a signal controller; and a common voltage generator configured to provide a common voltage to the display panel, wherein an afterimage reduction mode is driven to change a level of the common voltage provided by the common voltage generator when the determined pre-map areas are adjacent to each other.Type: ApplicationFiled: October 22, 2018Publication date: April 25, 2019Inventors: Sangan KWON, Junpyo LEE, Kyunho KIM, Sungjin KIM, Yong-jin SHIN, Neung-beom LEE, Kyung-hwa LIM, Myungbo SIM, Jinhyuk JANG
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Publication number: 20190035341Abstract: A display apparatus includes a display panel including display blocks, where each of the display blocks includes a plurality of pixels, a gate driver which outputs gate signals to the pixels, a data driver which receives image data and outputs data voltages corresponding to the image data to the pixels, and a timing controller which converts an image signal input thereto, outputs the converted image signal to the data driver as the image data, and controls a driving timing of the gate driver and the data driver. The timing controller controls output timings of at least data voltages output to pixels of a predetermined display block among the data voltages provided to the pixels of the display blocks, depending on a color pattern of the image signal corresponding to the pixels of the predetermined display block.Type: ApplicationFiled: June 19, 2018Publication date: January 31, 2019Inventors: Neung-beom LEE, Junpyo LEE, Sangan KWON, Kyunho KIM, Sungjin KIM, Yong-jin SHIN, Shimho YI, Kyung-hwa LIM
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Patent number: 10186220Abstract: A gate driver includes a first shift-register including a plurality of odd-numbered stages which outputs a plurality of odd-numbered original gate signals having a pre-charge pulse and a main-charge pulse in synchronization with a first gate clock signal, a second shift-register comprising a plurality of even-numbered stages which outputs a plurality of even-numbered original gate signals having a pre-charge pulse and a main-charge pulse in synchronization with a second gate clock signal, a first inverter configured to output a first inversion pre-charge control signal having a phase opposite to a phase of a first pre-charge control signal, and a second inverter configured to output a second inversion pre-charge control signal having a phase opposite to a phase of a second pre-charge control signal.Type: GrantFiled: February 26, 2016Date of Patent: January 22, 2019Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Young-Soo Sohn, Neung-Beom Lee, Jeong-Hyun Kim, Jin-Seuk Kim, Won-Hee Lee
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Publication number: 20180301105Abstract: A display device and method is provided that permits selection of a first lookup table or a second lookup table to operate the data driver at respectively different temperatures to prevent heat from damaging the display device. The display device includes a detector which detects the number of toggles in which the amount of change in gray values of successive pixels driven by the same data line in one frame is equal to or greater than a reference gray change amount. A comparator compares the number of toggles detected by the detector with a reference number of toggles, and a lookup table selector which selects any one of a first lookup table and a second lookup table based on the comparison result of the comparator and provides the selected first lookup table or second lookup table to a data driver.Type: ApplicationFiled: November 1, 2017Publication date: October 18, 2018Inventors: KYUN HO KIM, Bong Gyun KANG, Sang An KWON, Seung Hwan MOON, Yong Jin SHIN, Neung Beom LEE, Jun Pyo LEE, Kyung Hwa LIM
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Publication number: 20170053585Abstract: A gate driver includes a first shift-register including a plurality of odd-numbered stages which outputs a plurality of odd-numbered original gate signals having a pre-charge pulse and a main-charge pulse in synchronization with a first gate clock signal, a second shift-register comprising a plurality of even-numbered stages which outputs a plurality of even-numbered original gate signals having a pre-charge pulse and a main-charge pulse in synchronization with a second gate clock signal, a first inverter configured to output a first inversion pre-charge control signal having a phase opposite to a phase of a first pre-charge control signal, and a second inverter configured to output a second inversion pre-charge control signal having a phase opposite to a phase of a second pre-charge control signal.Type: ApplicationFiled: February 26, 2016Publication date: February 23, 2017Inventors: YOUNG-SOO SOHN, NEUNG-BEOM LEE, JEONG-HYUN KIM, JIN-SEUK KIM, WON-HEE LEE
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Patent number: 9373296Abstract: A display apparatus includes pixels each including first and second sub-pixels having different transmittances from each other under a same gray scale, gate lines commonly connected to the first and second sub-pixels to apply a gate signal to the first and second sub-pixels, a first data line applying a first data signal to one of the first and second sub-pixels, and a second data line applying a second data signal to the other one of the first and second sub-pixels. The first sub-pixel has the transmittance lower than the transmittance of the second sub-pixel, and the second sub-pixel connected to an i-th gate line of the gate lines is disposed between the first sub-pixel connected to the i-th gate line and the first sub-pixel connected to an (i+1)th gate line of the gate lines.Type: GrantFiled: June 3, 2014Date of Patent: June 21, 2016Assignee: Samsung Display Co., Ltd.Inventors: Neung-Beom Lee, Jeong-Hyun Kim, Jinseuk Kim, Jong Hyun Sim, Junpyo Lee
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GATE DRIVER, DISPLAY APPARATUS INCLUDING THE SAME AND METHOD OF DRIVING DISPLAY PANEL USING THE SAME
Publication number: 20160042713Abstract: A gate driver includes a gate signal generating part, a switching part and a switching controlling part. The gate signal generating part is configured to generate a gate signal including a precharge time and a normal charge time using a compensated gate on voltage and a gate off voltage. The switching part is disposed between the gate signal generating part and a gate line. The switching part is configured to apply a compensated gate signal to the gate line. The switching controlling part is configured to generate a switching control signal for controlling an operation of the switching part.Type: ApplicationFiled: July 21, 2015Publication date: February 11, 2016Inventors: Jong-Hyun SIM, Neung-Beom LEE, Dong-Joon KWAG, Soo-Yeon KIM, Jeong-Hyun KIM, Hyeon-Uk WON, Ji-Ye LEE, Hyeon-Woo HWANG