Patents by Inventor Hoon-Bae Kim
Hoon-Bae Kim 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: 11569556Abstract: A phase shifter includes a first substrate; a microstrip formed on the first substrate so as to extend in a first direction; a ground layer disposed with a space on the upper surface of the microstrip and having a defected ground structure (DGS) with a defected pattern formed therein; a second substrate disposed on the ground layer; and a liquid crystal layer disposed in a space between the first substrate and the second substrate, wherein DC voltage is applied between the ground layer and the microstrip.Type: GrantFiled: October 23, 2018Date of Patent: January 31, 2023Assignees: LG DISPLAY CO., LTD., UIF (UNIVERSITY INDUSTRY FOUNDATION), YONSEI UNIVERSITYInventors: Byungwook Min, Hoon Bae Kim, Sung-Eun Kim, Jeong Min Moon, Su Seok Choi, Sungpil Ryu, Jihwan Jung, Kiseok Chang
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Publication number: 20200274217Abstract: The present invention relates to a phase shifter comprising a DGS and a radio communication module comprising the same. The phase shifter comprises: a first substrate; a microstrip formed on the first substrate so as to extend in a first direction; a ground layer disposed with a space on the upper surface of the microstrip and having a defected ground structure (DGS) with a defected pattern formed therein; a second substrate disposed on the ground layer; and a liquid crystal layer disposed in a space between the first substrate and the second substrate, wherein DC voltage is applied between the ground layer and the microstrip.Type: ApplicationFiled: October 23, 2018Publication date: August 27, 2020Applicants: LG Display Co., Ltd., UIF (UNIVERSITY INDUSTRY FOUNDATION), YONSEI UNIVERSITYInventors: Byungwook MIN, Hoon Bae KIM, Sung-Eun KIM, Jeong Min MOON, Su Seok CHOI, Sungpil RYU, Jihwan JUNG, Kiseok CHANG
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Patent number: 10423262Abstract: In a touch display device, a controller generates a touch sync signal for controlling timing of a touch sensing period and a display period in each of a plurality of frames. A touch panel has a plurality of touch electrodes in a display area to generate touch sensing signals indicating whether or not a touch occurs during the touch sensing period. A touch sensing circuit supplies a touch drive signal to the plurality of touch electrodes during the touch sensing period and detects if the touch occurred based on the touch sensing signals received from the plurality of touch electrodes. A touch assistance line surrounds the display area and is disposed in the non-display area of the touch panel. A touch assistance signal supply circuit generates a touch assistance signal on the touch assistance line. The touch assistance signal mimics the touch drive signal during the touch sensing period.Type: GrantFiled: April 5, 2018Date of Patent: September 24, 2019Assignee: LG Display Co., Ltd.Inventors: Seong Kyu Kang, Hoon Bae Kim, Sung Yub Lee
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Patent number: 10372257Abstract: A liquid crystal display device is disclosed, which may compensate for a common voltage by reflecting all of noises by which a plurality of common electrodes are affected. The liquid crystal display device comprises a liquid crystal display panel including a plurality of data lines, a plurality of gate lines crossing the data lines, and a plurality of pixels provided at crossing regions of the data lines and the gate lines and including pixel electrodes and common electrodes to which a common voltage is supplied, wherein a common electrode of the common electrodes is shared by two or more of the plurality of pixels. The liquid crystal display panel also includes a plurality of feedback lines that overlap the common electrodes, the plurality of feedback lines receiving a variation of the common voltage that is reflected by the common electrodes onto the plurality of feedback lines.Type: GrantFiled: October 26, 2015Date of Patent: August 6, 2019Assignee: LG Display Co., Ltd.Inventors: Hoon Bae Kim, Sun Yeop Kim, Sung Yub Lee, Seong Kyu Kang
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Publication number: 20180224987Abstract: In a touch display device, a controller generates a touch sync signal for controlling timing of a touch sensing period and a display period in each of a plurality of frames. A touch panel has a plurality of touch electrodes in a display area to generate touch sensing signals indicating whether or not a touch occurs during the touch sensing period. A touch sensing circuit supplies a touch drive signal to the plurality of touch electrodes during the touch sensing period and detects if the touch occurred based on the touch sensing signals received from the plurality of touch electrodes. A touch assistance line surrounds the display area and is disposed in the non-display area of the touch panel. A touch assistance signal supply circuit generates a touch assistance signal on the touch assistance line. The touch assistance signal mimics the touch drive signal during the touch sensing period.Type: ApplicationFiled: April 5, 2018Publication date: August 9, 2018Inventors: Seong Kyu KANG, Hoon Bae KIM, Sung Yub LEE
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Patent number: 9990075Abstract: Disclosed are a display device and method of driving the same in which a display panel may include a plurality of gate lines, a plurality of data lines and a touch panel, the touch panel including a first touch electrode group where s number of horizontal electrodes and k (which is less than s) number of longitudinal electrodes cross each other; and a touch sensing unit that during a first period of a plurality of touch sensing periods included in a one frame period, determines whether at least one of the s number of horizontal electrodes is touched based on a plurality of sensing signals received from at least two of the s number of horizontal electrodes, and during a second period of the plurality of touch sensing periods, determines whether at least one of the s number of horizontal electrodes, which is either the same or different from the at least one of the s number of horizontal electrodes determined during the first period, is touched based on one or more sensing signals received from at least one ofType: GrantFiled: November 10, 2014Date of Patent: June 5, 2018Assignee: LG DISPLAY CO., LTD.Inventors: Seong Kyu Kang, Hoon Bae Kim, Sung Su Han
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Patent number: 9965071Abstract: In a touch display device, a controller generates a touch sync signal for controlling timing of a touch sensing period and a display period in each of a plurality of frames. A touch panel has a plurality of touch electrodes in a display area to generate touch sensing signals indicating whether or not a touch occurs during the touch sensing period. A touch sensing circuit supplies a touch drive signal to the plurality of touch electrodes during the touch sensing period and detects if the touch occurred based on the touch sensing signals received from the plurality of touch electrodes. A touch assistance line surrounds the display area and is disposed in the non-display area of the touch panel. A touch assistance signal supply circuit generates a touch assistance signal on the touch assistance line. The touch assistance signal mimics the touch drive signal during the touch sensing period.Type: GrantFiled: February 4, 2016Date of Patent: May 8, 2018Assignee: LG Display Co., Ltd.Inventors: Seong Kyu Kang, Hoon Bae Kim, Sung Yub Lee
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Patent number: 9904420Abstract: Discussed is a display device integrated with touch screen. The display device includes a plurality of touch groups into which a plurality of touch electrodes are physically divided, a plurality of first driving electrode lines connected to a plurality of driving electrodes of a first touch group of the touch groups, a plurality of second driving electrode lines connected to a plurality of driving electrodes of a second touch group of the touch groups, a plurality of first receiving electrode lines connected to a plurality of receiving electrodes of the first touch group, a plurality of second receiving electrode lines connected to a plurality of receiving electrodes of the second touch group, a touch driving IC configured to supply a touch driving signal to the first and second driving electrode lines, and a touch sensing IC configured to sense touch signals of the first and second receiving electrode lines.Type: GrantFiled: September 16, 2014Date of Patent: February 27, 2018Assignee: LG DISPLAY CO., LTD.Inventors: Hoon Bae Kim, Cheol Se Kim, Sung Su Han, Seong Kyu Kang
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Patent number: 9886129Abstract: Discussed are a display device and a method of driving the same. The display device can include a panel where a plurality of touch groups including a plurality of self-capacitance electrodes are arranged along with a plurality of gate lines, a touch sensing unit configured to analyze a plurality of touch sensing signals sequentially received from the plurality of touch groups to determine a touch event on the panel, during a plurality of touch sensing periods included in one frame period, a data driver configured to respectively supply data voltages to a plurality of data lines which are provided in the panel in a direction perpendicular to the plurality of touch groups, a gate driver configured to sequentially supply a scan pulse to the plurality of gate lines, and a timing controller configured to supply image data to the data driver.Type: GrantFiled: April 28, 2015Date of Patent: February 6, 2018Assignee: LG Display Co., Ltd.Inventors: Sung Chul Kim, Hoon Bae Kim
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Patent number: 9805690Abstract: A disclosed display device includes a touch panel including s number of receiving electrodes and k number of driving electrodes which are formed to intersect the receiving electrodes, k being less than s and larger than 2, the touch panel provided in an in-cell type. The display device further includes a touch sensing unit configured to respectively supply a first driving voltage and a second driving voltage to an nth driving electrode and an (n+1)th driving electrode, which are adjacent to each other among the driving electrodes, to determine whether the nth driving electrode is touched, n being a natural number which is more than one and less than k, the touch sensing unit further configured to respectively supply the first driving voltage and the second driving voltage to a kth driving electrode and a (k?1)th driving electrode to determine whether the kth driving electrode is touched.Type: GrantFiled: November 10, 2014Date of Patent: October 31, 2017Assignee: LG Display Co., Ltd.Inventors: Seong Kyu Kang, Hoon Bae Kim, Sung Su Han
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Patent number: 9746972Abstract: A display device includes a panel comprising a plurality of driving electrodes and a plurality of receiving electrodes; a panel driver sequentially supplying a scan pulse to a plurality of gate lines corresponding to a first driving electrode of the plurality of driving electrodes, and after a touch sensing period, sequentially supplying a scan pulse to a plurality of gate lines corresponding to a second driving electrode of the plurality of driving electrodes, wherein the panel driver repeatedly performs the sequentially supplying of the scan pulse; and a touch sensing unit sequentially supplying a driving voltage to at least two or more of the plurality of driving electrodes to determine whether there is a touch during the touch sensing period.Type: GrantFiled: August 11, 2014Date of Patent: August 29, 2017Assignee: LG Display Co., Ltd.Inventor: Hoon Bae Kim
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Patent number: 9489076Abstract: A touch display device comprises a controller to generate a touch sync signal for controlling timing of a touch sensing period and a display period. A touch panel has a plurality of touch electrodes in a display area of the touch display device. The touch panel generates touch sensing signals indicating whether or not a touch occurs during the touch sensing period. A gate driver supplies gate pulses to gate lines of the touch panel during the display period and supplies a gate line auxiliary drive signal from the first transfer line onto the gate lines during the touch sensing period that mimics the touch drive signal. One or more auxiliary lines supply a supplemental auxiliary drive signal during the touch sensing period that mimics the touch drive signal.Type: GrantFiled: December 10, 2015Date of Patent: November 8, 2016Assignee: LG Display Co., Ltd.Inventors: Yong-Chan Park, Ju-Han Kim, Sung-Chul Kim, Hoon-Bae Kim
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Patent number: 9477111Abstract: Discussed is a display device. The display device includes a display panel including a plurality of gate lines and a plurality of data lines, a timing controller temporally dividing one frame period and driving the display panel such that a display mode for displaying an image in the display panel and a touch mode for sensing the user touch are alternately driven, a gate driver, and a data driver. Some of the gate lines and some of the data lines overlap each of a plurality of touch electrodes that are units for sensing a user touch. The gate driver simultaneously turns on a plurality of switching elements respectively connected to the gate lines overlapping each touch electrode in the touch mode. The data driver outputting display data having the same level to the respective data lines overlapping each touch electrode when the switching elements are turned on.Type: GrantFiled: April 9, 2013Date of Patent: October 25, 2016Assignee: LG DISPLAY CO., LTD.Inventors: Hoon Bae Kim, Cheol Se Kim, Sungsu Han
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Publication number: 20160188065Abstract: In a touch display device, a controller generates a touch sync signal for controlling timing of a touch sensing period and a display period in each of a plurality of frames. A touch panel has a plurality of touch electrodes in a display area to generate touch sensing signals indicating whether or not a touch occurs during the touch sensing period. A touch sensing circuit supplies a touch drive signal to the plurality of touch electrodes during the touch sensing period and detects if the touch occurred based on the touch sensing signals received from the plurality of touch electrodes. A touch assistance line surrounds the display area and is disposed in the non-display area of the touch panel. A touch assistance signal supply circuit generates a touch assistance signal on the touch assistance line. The touch assistance signal mimics the touch drive signal during the touch sensing period.Type: ApplicationFiled: February 4, 2016Publication date: June 30, 2016Inventors: Seong Kyu KANG, Hoon Bae KIM, Sung Yub LEE
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Publication number: 20160180781Abstract: A liquid crystal display device is disclosed, which may compensate for a common voltage by reflecting all of noises by which a plurality of common electrodes are affected. The liquid crystal display device comprises a liquid crystal display panel including a plurality of data lines, a plurality of gate lines crossing the data lines, and a plurality of pixels provided at crossing regions of the data lines and the gate lines and including pixel electrodes and common electrodes to which a common voltage is supplied, wherein a common electrode of the common electrodes is shared by two or more of the plurality of pixels. The liquid crystal display panel also includes a plurality of feedback lines that overlap the common electrodes, the plurality of feedback lines receiving a variation of the common voltage that is reflected by the common electrodes onto the plurality of feedback lines.Type: ApplicationFiled: October 26, 2015Publication date: June 23, 2016Inventors: Hoon Bae KIM, Sun Yeop KIM, Sung Yub LEE, Seong Kyu KANG
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Patent number: 9371430Abstract: The present invention relates to a plasma polymerized thin film having high hardness and a low dielectric constant and a manufacturing method thereof, and in particular, relates to a plasma polymerized thin film having high hardness and a low dielectric constant for use in semiconductor devices, which has improved mechanical strength properties such as hardness and elastic modulus while having a low dielectric constant, and a manufacturing method thereof.Type: GrantFiled: August 13, 2015Date of Patent: June 21, 2016Assignee: Research & Business Foundation Sungkyunkwan UniversityInventors: Dong Geun Jung, Hoon Bae Kim, Hyo Jin Oh, Chae Min Lee
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Publication number: 20160098134Abstract: A touch display device comprises a controller to generate a touch sync signal for controlling timing of a touch sensing period and a display period. A touch panel has a plurality of touch electrodes in a display area of the touch display device. The touch panel generates touch sensing signals indicating whether or not a touch occurs during the touch sensing period. A gate driver supplies gate pulses to gate lines of the touch panel during the display period and supplies a gate line auxiliary drive signal from the first transfer line onto the gate lines during the touch sensing period that mimics the touch drive signal. One or more auxiliary lines supply a supplemental auxiliary drive signal during the touch sensing period that mimics the touch drive signal.Type: ApplicationFiled: December 10, 2015Publication date: April 7, 2016Inventors: Yong-Chan Park, Ju-Han Kim, Sung-Chul Kim, Hoon-Bae Kim
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Patent number: 9298329Abstract: The display device includes a panel comprising driving electrodes and receiving electrodes, and a touch sensing unit comprising a driver supplying a common voltage to the driving electrodes and the receiving electrodes during an image display period, and sequentially supplying a driving voltage to the driving electrodes to determine whether the panel is touched, during a touch sensing period, and a receiver determining whether there is a touch on the panel based on comparison of a sensing signal induced through the receiving electrodes by the driving voltage with a reference voltage applied to the receiving electrodes. The reference voltage is different from an intermediate level of the driving voltage corresponding to an average of a maximum level and a minimum level of the driving voltage. A root mean square value of the reference voltage is substantially equal to a root mean square value of the driving voltage.Type: GrantFiled: May 20, 2014Date of Patent: March 29, 2016Assignee: LG Display Co., Ltd.Inventor: Hoon Bae Kim
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Patent number: 9285913Abstract: In a touch display device, a controller generates a touch sync signal for controlling timing of a touch sensing period and a display period in each of a plurality of frames. A touch panel has a plurality of touch electrodes in a display area to generate touch sensing signals indicating whether or not a touch occurs during the touch sensing period. A touch sensing circuit supplies a touch drive signal to the plurality of touch electrodes during the touch sensing period and detects if the touch occurred based on the touch sensing signals received from the plurality of touch electrodes. A touch assistance line surrounds the display area and is disposed in the non-display area of the touch panel. A touch assistance signal supply circuit generates a touch assistance signal on the touch assistance line. The touch assistance signal mimics the touch drive signal during the touch sensing period.Type: GrantFiled: May 29, 2015Date of Patent: March 15, 2016Assignee: LG Display Co., Ltd.Inventors: Seong Kyu Kang, Hoon Bae Kim, Sung Yub Lee
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Patent number: 9274639Abstract: A touch display device comprises a controller to generate a touch sync signal for controlling timing of a touch sensing period and a display period. A touch panel has a plurality of touch electrodes in a display area of the touch display device. The touch panel generates touch sensing signals indicating whether or not a touch occurs during the touch sensing period. A gate driver supplies gate pulses to gate lines of the touch panel during the display period and supplies a gate line auxiliary drive signal from the first transfer line onto the gate lines during the touch sensing period that mimics the touch drive signal. One or more auxiliary lines supply a supplemental auxiliary drive signal during the touch sensing period that mimics the touch drive signal.Type: GrantFiled: May 12, 2015Date of Patent: March 1, 2016Assignee: LG Display Co., Ltd.Inventors: Yong-Chan Park, Ju-Han Kim, Sung-Chul Kim, Hoon-Bae Kim