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).

  • Patent number: 11569556
    Abstract: 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: Grant
    Filed: October 23, 2018
    Date of Patent: January 31, 2023
    Assignees: LG DISPLAY CO., LTD., UIF (UNIVERSITY INDUSTRY FOUNDATION), YONSEI UNIVERSITY
    Inventors: Byungwook Min, Hoon Bae Kim, Sung-Eun Kim, Jeong Min Moon, Su Seok Choi, Sungpil Ryu, Jihwan Jung, Kiseok Chang
  • Publication number: 20200274217
    Abstract: 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: Application
    Filed: October 23, 2018
    Publication date: August 27, 2020
    Applicants: LG Display Co., Ltd., UIF (UNIVERSITY INDUSTRY FOUNDATION), YONSEI UNIVERSITY
    Inventors: Byungwook MIN, Hoon Bae KIM, Sung-Eun KIM, Jeong Min MOON, Su Seok CHOI, Sungpil RYU, Jihwan JUNG, Kiseok CHANG
  • Patent number: 10423262
    Abstract: 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: Grant
    Filed: April 5, 2018
    Date of Patent: September 24, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Seong Kyu Kang, Hoon Bae Kim, Sung Yub Lee
  • Patent number: 10372257
    Abstract: 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: Grant
    Filed: October 26, 2015
    Date of Patent: August 6, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Hoon Bae Kim, Sun Yeop Kim, Sung Yub Lee, Seong Kyu Kang
  • Publication number: 20180224987
    Abstract: 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: Application
    Filed: April 5, 2018
    Publication date: August 9, 2018
    Inventors: Seong Kyu KANG, Hoon Bae KIM, Sung Yub LEE
  • Patent number: 9990075
    Abstract: 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 of
    Type: Grant
    Filed: November 10, 2014
    Date of Patent: June 5, 2018
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Seong Kyu Kang, Hoon Bae Kim, Sung Su Han
  • Patent number: 9965071
    Abstract: 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: Grant
    Filed: February 4, 2016
    Date of Patent: May 8, 2018
    Assignee: LG Display Co., Ltd.
    Inventors: Seong Kyu Kang, Hoon Bae Kim, Sung Yub Lee
  • Patent number: 9904420
    Abstract: 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: Grant
    Filed: September 16, 2014
    Date of Patent: February 27, 2018
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Hoon Bae Kim, Cheol Se Kim, Sung Su Han, Seong Kyu Kang
  • Patent number: 9886129
    Abstract: 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: Grant
    Filed: April 28, 2015
    Date of Patent: February 6, 2018
    Assignee: LG Display Co., Ltd.
    Inventors: Sung Chul Kim, Hoon Bae Kim
  • Patent number: 9805690
    Abstract: 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: Grant
    Filed: November 10, 2014
    Date of Patent: October 31, 2017
    Assignee: LG Display Co., Ltd.
    Inventors: Seong Kyu Kang, Hoon Bae Kim, Sung Su Han
  • Patent number: 9746972
    Abstract: 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: Grant
    Filed: August 11, 2014
    Date of Patent: August 29, 2017
    Assignee: LG Display Co., Ltd.
    Inventor: Hoon Bae Kim
  • Patent number: 9489076
    Abstract: 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: Grant
    Filed: December 10, 2015
    Date of Patent: November 8, 2016
    Assignee: LG Display Co., Ltd.
    Inventors: Yong-Chan Park, Ju-Han Kim, Sung-Chul Kim, Hoon-Bae Kim
  • Patent number: 9477111
    Abstract: 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: Grant
    Filed: April 9, 2013
    Date of Patent: October 25, 2016
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Hoon Bae Kim, Cheol Se Kim, Sungsu Han
  • Publication number: 20160188065
    Abstract: 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: Application
    Filed: February 4, 2016
    Publication date: June 30, 2016
    Inventors: Seong Kyu KANG, Hoon Bae KIM, Sung Yub LEE
  • Publication number: 20160180781
    Abstract: 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: Application
    Filed: October 26, 2015
    Publication date: June 23, 2016
    Inventors: Hoon Bae KIM, Sun Yeop KIM, Sung Yub LEE, Seong Kyu KANG
  • Patent number: 9371430
    Abstract: 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: Grant
    Filed: August 13, 2015
    Date of Patent: June 21, 2016
    Assignee: Research & Business Foundation Sungkyunkwan University
    Inventors: Dong Geun Jung, Hoon Bae Kim, Hyo Jin Oh, Chae Min Lee
  • Publication number: 20160098134
    Abstract: 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: Application
    Filed: December 10, 2015
    Publication date: April 7, 2016
    Inventors: Yong-Chan Park, Ju-Han Kim, Sung-Chul Kim, Hoon-Bae Kim
  • Patent number: 9298329
    Abstract: 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: Grant
    Filed: May 20, 2014
    Date of Patent: March 29, 2016
    Assignee: LG Display Co., Ltd.
    Inventor: Hoon Bae Kim
  • Patent number: 9285913
    Abstract: 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: Grant
    Filed: May 29, 2015
    Date of Patent: March 15, 2016
    Assignee: LG Display Co., Ltd.
    Inventors: Seong Kyu Kang, Hoon Bae Kim, Sung Yub Lee
  • Patent number: 9274639
    Abstract: 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: Grant
    Filed: May 12, 2015
    Date of Patent: March 1, 2016
    Assignee: LG Display Co., Ltd.
    Inventors: Yong-Chan Park, Ju-Han Kim, Sung-Chul Kim, Hoon-Bae Kim