Patents by Inventor Seong-Kyu Kang

Seong-Kyu Kang 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: 10503334
    Abstract: Disclosed are a driver IC and a display apparatus including the same, which supply a touch auxiliary signal, having the same phase and potential difference as those of a touch signal supplied to a touch electrode which is also used as a common electrode, to a plurality of supply lines disposed in a non-display area during a touch sensing period. The driver IC includes a common voltage supply element, a touch sensing unit, and a common voltage switching unit. The common voltage switching unit connects the common voltage supply element to a plurality of touch electrode lines connected to the plurality of touch electrodes during an image display period, and during a touch sensing period, the common voltage switching unit connects the plurality of touch electrode lines to the touch sensing unit.
    Type: Grant
    Filed: March 12, 2018
    Date of Patent: December 10, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Seong Kyu Kang, Sung Yub Lee
  • 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
  • Publication number: 20180203545
    Abstract: Disclosed are a driver IC and a display apparatus including the same, which supply a touch auxiliary signal, having the same phase and potential difference as those of a touch signal supplied to a touch electrode which is also used as a common electrode, to a plurality of supply lines disposed in a non-display area during a touch sensing period. The driver IC includes a common voltage supply element, a touch sensing unit, and a common voltage switching unit. The common voltage switching unit connects the common voltage supply element to a plurality of touch electrode lines connected to the plurality of touch electrodes during an image display period, and during a touch sensing period, the common voltage switching unit connects the plurality of touch electrode lines to the touch sensing unit.
    Type: Application
    Filed: March 12, 2018
    Publication date: July 19, 2018
    Inventors: Seong Kyu KANG, 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: 9939976
    Abstract: Disclosed are a driver IC and a display apparatus including the same, which supply a touch auxiliary signal, having the same phase and potential difference as those of a touch signal supplied to a touch electrode which is also used as a common electrode, to a plurality of supply lines disposed in a non-display area during a touch sensing period. The driver IC includes a common voltage supply element, a touch sensing unit, and a common voltage switching unit. The common voltage switching unit connects the common voltage supply element to a plurality of touch electrode lines connected to the plurality of touch electrodes during an image display period, and during a touch sensing period, the common voltage switching unit connects the plurality of touch electrode lines to the touch sensing unit.
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: April 10, 2018
    Assignee: LG Display Co., Ltd.
    Inventors: Seong Kyu Kang, 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: 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
  • Publication number: 20170090621
    Abstract: Disclosed are a driver IC and a display apparatus including the same, which supply a touch auxiliary signal, having the same phase and potential difference as those of a touch signal supplied to a touch electrode which is also used as a common electrode, to a plurality of supply lines disposed in a non-display area during a touch sensing period. The driver IC includes a common voltage supply element, a touch sensing unit, and a common voltage switching unit. The common voltage switching unit connects the common voltage supply element to a plurality of touch electrode lines connected to the plurality of touch electrodes during an image display period, and during a touch sensing period, the common voltage switching unit connects the plurality of touch electrode lines to the touch sensing unit.
    Type: Application
    Filed: May 31, 2016
    Publication date: March 30, 2017
    Inventors: Seong Kyu KANG, Sung Yub LEE
  • 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
  • Patent number: 9377919
    Abstract: Disclosed are a driver IC and a display apparatus including the same, which supply a touch auxiliary signal, having the same phase and potential difference as those of a touch signal supplied to a touch electrode which is also used as a common electrode, to a plurality of supply lines disposed in a non-display area during a touch sensing period. The driver IC includes a common voltage supply element, a touch sensing unit, and a common voltage switching unit. The common voltage switching unit connects the common voltage supply element to a plurality of touch electrode lines connected to the plurality of touch electrodes during an image display period, and during a touch sensing period, the common voltage switching unit connects the plurality of touch electrode lines to the touch sensing unit.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: June 28, 2016
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Seong Kyu Kang, 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: 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
  • Publication number: 20150161963
    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: Application
    Filed: November 10, 2014
    Publication date: June 11, 2015
    Inventors: Seong Kyu KANG, Hoon Bae KIM, Sung Su HAN
  • Publication number: 20150161964
    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: Application
    Filed: November 10, 2014
    Publication date: June 11, 2015
    Inventors: Seong Kyu KANG, Hoon Bae KIM, Sung Su HAN
  • Publication number: 20150077370
    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: Application
    Filed: September 16, 2014
    Publication date: March 19, 2015
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Hoon Bae KIM, Cheol Se KIM, Sung Su HAN, Seong Kyu KANG
  • Patent number: 6703693
    Abstract: An apparatus for reversing upper and lower surfaces of a lead frame which passes through a silver-plating process in a lead frame manufacturing process includes at least one guide rail having a curved portion for guiding the lead frame to be fallen down and reversed along an arc of the curved portion, and a conveying roller provided under the guide rail to horizontally convey the fallen lead frame. Thus, since the lead frame is reversed through a specific structure without use of any robot, the malfunction problem of the prior art is solved and costs are reduced.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: March 9, 2004
    Assignee: LG Cable Ltd.
    Inventors: Dong-Hoon Lee, Jong-Soo Oh, Ho-Youl Jeong, Ki-Mo Yang, Chae-Gon Kim, Seong-Kyu Kang
  • Publication number: 20030116832
    Abstract: An apparatus for reversing upper and lower surfaces of a lead frame which passes through a silver-plating process in a lead frame manufacturing process includes at least one guide rail having a curved portion for guiding the lead frame to be fallen down and reversed along an arc of the curved portion, and a conveying roller provided under the guide rail to horizontally convey the fallen lead frame. Thus, since the lead frame is reversed through a specific structure without use of any robot, the malfunction problem of the prior art is solved and costs are reduced.
    Type: Application
    Filed: December 13, 2002
    Publication date: June 26, 2003
    Inventors: Dong-Hoon Lee, Jong-Soo Oh, Ho-Youl Jeong, Ki-Mo Yang, Chae-Gon Kim, Seong-Kyu Kang