Patents by Inventor Sung Yub Lee

Sung Yub 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).

  • Patent number: 11567600
    Abstract: A touch display device is provided. The touch display device includes a display panel configured to display an image, a touch sensor on the display panel, and a touch circuit unit configured to drive and control the touch sensor. The touch circuit unit includes a pen signal correction unit configured to correct a sensing timing of an active pen placed on the touch sensor.
    Type: Grant
    Filed: December 7, 2021
    Date of Patent: January 31, 2023
    Assignee: LG Display Co., Ltd.
    Inventors: Byoung Gwan Lee, Sung Yub Lee, Su Yun Ju
  • Publication number: 20220179514
    Abstract: A touch display device is provided. The touch display device includes a display panel configured to display an image, a touch sensor on the display panel, and a touch circuit unit configured to drive and control the touch sensor. The touch circuit unit includes a pen signal correction unit configured to correct a sensing timing of an active pen placed on the touch sensor.
    Type: Application
    Filed: December 7, 2021
    Publication date: June 9, 2022
    Inventors: Byoung Gwan LEE, Sung Yub LEE, Su Yun JU
  • 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
  • Patent number: 10290335
    Abstract: The semiconductor device may include a driving voltage supply unit configured to supply a voltage such that a main word line signal has the voltage. The semiconductor device may include a current path control unit configured to increase the speed at which the voltage of the main word line signal decreases.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: May 14, 2019
    Assignee: SK hynix Inc.
    Inventors: Sung Yub Lee, Sung Soo Chi
  • Patent number: 10222885
    Abstract: A display device with an integrated touch screen and a method of driving the same are provided. The display device includes a panel configured to operate in a first display operation period, a first touch operation period, a second display operation period, and a second touch operation period, and include a touch electrode overlapping a plurality of gate lines and a plurality of data lines, and a gate driver configured to sequentially apply a gate-on voltage to an odd-numbered gate line among the plurality of gate lines during two horizontal periods in the first display operation period, and in the second display operation period, sequentially apply the gate-on voltage to an even-numbered gate line among the plurality of gate lines during two horizontal periods.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: March 5, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Sung Yub Lee, Seung Eun Pyo
  • 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: 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
  • Publication number: 20180033473
    Abstract: A semiconductor device may be provided. The semiconductor device may include a driving voltage supply unit configured to supply a voltage such that a main word line signal has the voltage. The semiconductor device may include a current path control unit configured to increase the speed at which the voltage of the main word line signal decreases.
    Type: Application
    Filed: April 21, 2017
    Publication date: February 1, 2018
    Applicant: SK hynix Inc.
    Inventors: Sung Yub LEE, Sung Soo CHI
  • Patent number: 9786351
    Abstract: A semiconductor memory device may include: a memory bank comprising a plurality of word lines; a smart command generation unit suitable for generating a smart refresh command, which is enabled at a random cycle, in response to an active command; and a refresh operation control unit suitable for performing a refresh operation to at least one of adjacent word lines of a target word line among the plurality of word lines in response to the smart refresh command.
    Type: Grant
    Filed: June 7, 2016
    Date of Patent: October 10, 2017
    Assignee: SK Hynix Inc.
    Inventors: Sung-Yub Lee, Geun-Il Lee, Jae-Hoon Cha
  • Patent number: 9755626
    Abstract: A semiconductor integrated circuit device may include a first circuit, a second circuit, and a delay circuit. The first circuit may include an output node. The second circuit may include an output node. The delay circuit may be coupled between the output node of the first circuit and the output node of the second circuit to selectively delay an output signal from the first circuit and an output signal from the second circuit.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: September 5, 2017
    Assignee: SK hynix Inc.
    Inventors: Sung Yub Lee, Jae Hoon Cha
  • Publication number: 20170186480
    Abstract: A semiconductor memory device may include: a memory bank comprising a plurality of word lines; a smart command generation unit suitable for generating a smart refresh command, which is enabled at a random cycle, in response to an active command; and a refresh operation control unit suitable for performing a refresh operation to at least one of adjacent word lines of a target word line among the plurality of word lines in response to the smart refresh command.
    Type: Application
    Filed: June 7, 2016
    Publication date: June 29, 2017
    Inventors: Sung-Yub LEE, Geun-Il LEE, Jae-Hoon CHA
  • Publication number: 20170179948
    Abstract: A signal transfer circuit may include a pass gate coupled between first and second nodes; and a control unit suitable for controlling the pass gate to prevent a current flowing from the second node to the first node during turn-on of the pass gate.
    Type: Application
    Filed: May 23, 2016
    Publication date: June 22, 2017
    Inventors: Sung-Yub LEE, Sung-Soo CHI
  • Patent number: 9672889
    Abstract: A semiconductor memory device includes a memory bank including a plurality of word lines, and a refresh operation control unit suitable for performing a first refresh operation for a first adjacent word line group of a target word line of the plurality of word lines, and performing a second refresh operation for a second adjacent word line group of the target word line after the first refresh operation, in response to a smart refresh command.
    Type: Grant
    Filed: April 16, 2015
    Date of Patent: June 6, 2017
    Assignee: SK Hynix Inc.
    Inventors: Sung-Yub Lee, Sung-Soo Chi
  • Publication number: 20170155382
    Abstract: A semiconductor integrated circuit device may include a first circuit, a second circuit, and a delay circuit. The first circuit may include an output node. The second circuit may include an output node. The delay circuit may be coupled between the output node of the first circuit and the output node of the second circuit to selectively delay an output signal from the first circuit and an output signal from the second circuit.
    Type: Application
    Filed: March 4, 2016
    Publication date: June 1, 2017
    Inventors: Sung Yub LEE, Jae Hoon CHA
  • 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
  • Patent number: 9569030
    Abstract: A touch screen display device is discussed. The device uses common electrodes, which are formed for display images, as touch electrodes. In a display interval, the common electrodes receive a common voltage and allow images to be displayed. In a touch sensing interval corresponding to a non-display interval of a single frame of plural frames, the common electrodes are driven as the touch electrodes and allow a touch position to be sensed. When the touch sensing interval is terminated, the data voltages which had been applied to the data lines before the touch sensing interval are re-applied to the data lines. As such, when a succeeding display interval starts after the touch sensing interval, the reduction of charging voltage in a pixel can be prevented or reduced. Therefore, a picture fault or an image fault can be prevented.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: February 14, 2017
    Assignee: LG Display Co., Ltd.
    Inventors: Sung Chul Kim, Sung Yub Lee, Seung Eun Pyo