Patents by Inventor Keuk-sang Kwon

Keuk-sang Kwon 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: 10871849
    Abstract: A display device with integrated touch screen is provided. The display device includes a panel configured to include a plurality of electrodes and to be division-driven in a display driving mode and a touch driving mode during one frame period, a display driver IC configured to apply a common voltage to the plurality of electrodes during the display driving mode, and an ROIC configured to apply, to the plurality of electrodes, a touch scan signal for sensing a touch when the touch driving mode is a first touch driving mode, and apply, to the plurality of electrodes, a touch scan signal for detecting a touch input position when the touch driving mode is a second touch driving mode.
    Type: Grant
    Filed: December 29, 2014
    Date of Patent: December 22, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Yoon Jong Choi, Keuk Sang Kwon, Seung Chul Park, Nam Kyun Cho
  • Patent number: 9740327
    Abstract: A display device with integrated touch screen is provided. The display device includes a panel configured to include a plurality of electrodes and to be division-driven in a display driving mode and a touch driving mode during one frame period, a display driver IC configured to apply a common voltage to the plurality of electrodes during the display driving mode, and an ROIC configured to apply, to the plurality of electrodes, a touch scan signal for sensing a touch when the touch driving mode is a first touch driving mode, and apply, to the plurality of electrodes, a touch scan signal for detecting a touch input position when the touch driving mode is a second touch driving mode.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: August 22, 2017
    Assignee: LG Display Co., Ltd.
    Inventors: Yoon Jong Choi, Keuk Sang Kwon, Seung Chul Park, Nam Kyun Cho
  • Patent number: 9658718
    Abstract: A display device integrated with a touch screen and a method for driving the same are disclosed, in which parasitic capacitance is prevented from being generated. The display device comprises a panel including a plurality of electrodes; a rear resistance film provided on the plurality of electrodes of the panel; a touch integrated circuit (IC) applying a touch driving signal to the plurality of electrodes when a driving mode of the panel is a touch driving mode; and a gate driver sequentially applying scan signals to the plurality of gate lines and a data driver applying a data voltage to the plurality of data lines, when the driving mode of the panel is a display driving mode, wherein the touch driving signal or a signal corresponding to the touch driving signal is applied to the rear resistance film when the driving mode of the panel is the touch driving mode.
    Type: Grant
    Filed: December 24, 2014
    Date of Patent: May 23, 2017
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Su Min Choi, Keuk Sang Kwon, Seung Chul Park
  • Patent number: 9239656
    Abstract: A touch display device and method of manufacturing a touch display device are provided. The touch display device includes: a display panel, an adhesive material layer on the display panel, a touch panel on the adhesive material layer, the touch panel including: a base film, a first touch electrode on a bottom surface of the base film, a second touch electrode on a top surface of the base film, and an insulating pattern at an edge portion of the bottom surface of the base film, and a cover glass on the touch panel.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: January 19, 2016
    Assignee: LG Display Co., Ltd.
    Inventors: Soo-Hwan Kim, Keuk-Sang Kwon
  • Publication number: 20150378512
    Abstract: A display device integrated with a touch screen and a method for driving the same are disclosed, in which parasitic capacitance is prevented from being generated. The display device comprises a panel including a plurality of electrodes; a rear resistance film provided on the plurality of electrodes of the panel; a touch integrated circuit (IC) applying a touch driving signal to the plurality of electrodes when a driving mode of the panel is a touch driving mode; and a gate driver sequentially applying scan signals to the plurality of gate lines and a data driver applying a data voltage to the plurality of data lines, when the driving mode of the panel is a display driving mode, wherein the touch driving signal or a signal corresponding to the touch driving signal is applied to the rear resistance film when the driving mode of the panel is the touch driving mode.
    Type: Application
    Filed: December 24, 2014
    Publication date: December 31, 2015
    Inventors: Su Min CHOI, Keuk Sang KWON, Seung Chul PARK
  • Publication number: 20150378499
    Abstract: A display device with integrated touch screen is provided. The display device includes a panel configured to include a plurality of electrodes and to be division-driven in a display driving mode and a touch driving mode during one frame period, a display driver IC configured to apply a common voltage to the plurality of electrodes during the display driving mode, and an ROIC configured to apply, to the plurality of electrodes, a touch scan signal for sensing a touch when the touch driving mode is a first touch driving mode, and apply, to the plurality of electrodes, a touch scan signal for detecting a touch input position when the touch driving mode is a second touch driving mode.
    Type: Application
    Filed: December 29, 2014
    Publication date: December 31, 2015
    Applicant: LG Display Co., Ltd.
    Inventors: Yoon Jong Choi, Keuk Sang Kwon, Seung Chul Park, Nam Kyun Cho
  • Publication number: 20150378509
    Abstract: A display device with integrated touch screen is provided. The display device includes a panel configured to include a plurality of electrodes and to be division-driven in a display driving mode and a touch driving mode during one frame period, a display driver IC configured to apply a common voltage to the plurality of electrodes during the display driving mode, and an ROIC configured to apply, to the plurality of electrodes, a touch scan signal for sensing a touch when the touch driving mode is a first touch driving mode, and apply, to the plurality of electrodes, a touch scan signal for detecting a touch input position when the touch driving mode is a second touch driving mode.
    Type: Application
    Filed: September 11, 2015
    Publication date: December 31, 2015
    Inventors: Yoon Jong Choi, Keuk Sang Kwon, Seung Chul Park, Nam Kyun Cho
  • Publication number: 20140176826
    Abstract: A touch display device and method of manufacturing a touch display device are provided. The touch display device includes: a display panel, an adhesive material layer on the display panel, a touch panel on the adhesive material layer, the touch panel including: a base film, a first touch electrode on a bottom surface of the base film, a second touch electrode on a top surface of the base film, and an insulating pattern at an edge portion of the bottom surface of the base film, and a cover glass on the touch panel.
    Type: Application
    Filed: September 25, 2013
    Publication date: June 26, 2014
    Applicant: LG Display Co., Ltd.
    Inventors: Soo-Hwan KIM, Keuk-Sang KWON
  • Patent number: 8605246
    Abstract: A liquid crystal display device includes first and second substrates spaced apart from each other, on which a display area and a non-display area are defined, a liquid crystal layer interposed between the first and second substrates, a seal pattern in the non-display area between the first and second substrates, a driver in the non-display area on the first substrate, column spacers in the display area between the first and second substrates, and a first auxiliary spacer between the driver and the second substrate.
    Type: Grant
    Filed: September 19, 2011
    Date of Patent: December 10, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Hong-Jae Kim, Tae-Man Kim, Keuk-Sang Kwon
  • Publication number: 20120008085
    Abstract: A liquid crystal display device includes first and second substrates spaced apart from each other, on which a display area and a non-display area are defined, a liquid crystal layer interposed between the first and second substrates, a seal pattern in the non-display area between the first and second substrates, a driver in the non-display area on the first substrate, column spacers in the display area between the first and second substrates, and a first auxiliary spacer between the driver and the second substrate.
    Type: Application
    Filed: September 19, 2011
    Publication date: January 12, 2012
    Inventors: Hong-Jae KIM, Tae-Man KIM, Keuk-Sang KWON
  • Patent number: 8045126
    Abstract: A liquid crystal display device includes first and second substrates spaced apart from each other, on which a display area and a non-display area are defined, a liquid crystal layer interposed between the first and second substrates, a seal pattern in the non-display area between the first and second substrates, a driver in the non-display area on the first substrate, column spacers in the display area between the first and second substrates, and a first auxiliary spacer between the driver and the second substrate.
    Type: Grant
    Filed: July 2, 2007
    Date of Patent: October 25, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Hong-Jae Kim, Tae-Man Kim, Keuk-Sang Kwon
  • Patent number: 7750884
    Abstract: A method and apparatus of driving a liquid crystal display device is disclosed in the present invention. The liquid crystal display device includes a plurality of data lines, a plurality of gate lines crossing the data lines, a plurality of first liquid crystal cells on a first side of the data lines, a plurality of second liquid crystal cells on a second side of the data lines, a first switching part in each of the first liquid crystal cells and controlled by the ith gate line and the (i+2)th gate line (wherein i is a natural number), and a second switching part in each of the second liquid crystal cells and controlled by the ith gate line.
    Type: Grant
    Filed: August 17, 2006
    Date of Patent: July 6, 2010
    Assignee: LG Display Co., Ltd.
    Inventors: Keuk Sang Kwon, Kwang Soon Park
  • Patent number: 7554630
    Abstract: An LCD device with improved an aperture ratio and decreased parasitic capacitance has a passivation layer of an inorganic material and which includes a gate line on a first substrate; a gate insulating layer on an entire surface of the first substrate including the gate line; a data line on the gate insulating layer in perpendicular to the gate line, to define a pixel region; a thin film transistor at a crossing portion of the gate and data lines; a passivation layer on the entire surface of the first substrate including the thin film transistor; a pixel electrode on the passivation layer, for being connected with a drain electrode of the thin film transistor; and a light-shielding metal for receiving a voltage, formed between the data line and the pixel electrode, to prevent a parasitic capacitance between the data line and the pixel electrode.
    Type: Grant
    Filed: December 30, 2004
    Date of Patent: June 30, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Keuk Sang Kwon, Dae Lim Park, Seong Soo Hwang, Sung Gu Kang, Jong Hwae Lee, Bung Goo Kim, Jong A Choi
  • Patent number: 7532277
    Abstract: A liquid crystal display device (LCD) includes an alignment mark in a pixel region. The LCD includes upper and lower substrates; a plurality of gate lines; a plurality of data lines arranged to perpendicularly cross the gate lines on the lower substrate and defining unit pixels together with the gate lines; a switching element at each crossing of the gate lines and the data lines; first and second alignment marks disposed on respective sides of at least one of the gate lines and the data lines; a pixel electrode at each unit pixel; a black matrix on a region of the upper substrate corresponding to a boundary region of the unit pixels; and a liquid crystal layer between the upper and lower substrates. One side of the first alignment mark and one side of the black matrix lie on one straight line, and one side of the second alignment mark and the other side of the black matrix lie on one straight line.
    Type: Grant
    Filed: June 27, 2006
    Date of Patent: May 12, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Keuk-Sang Kwon, Kwang-Soon Park
  • Patent number: 7515242
    Abstract: A thin and compact liquid crystal display device includes a liquid crystal display panel with first and second substrates, each having a display area and a non-display area, which are bonded to each other and separated from each other by liquid crystal material. A thermally conductive layer is formed on any one of the first and second substrates to prevent the liquid crystal material from becoming too cool, thereby preventing temperature-dependent formation of bubbles within the liquid crystal material. Such a liquid crystal display device may be simply fabricated.
    Type: Grant
    Filed: June 25, 2004
    Date of Patent: April 7, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Keuk Sang Kwon, Myung Ho You, In Byeong Kang, Young Sik Kim
  • Patent number: 7495714
    Abstract: A flat panel display having a black mask EMI layer isolated from Vcom and tied to zero potential. The flat panel display has a integral metal heater layer and thermal sensor that are in close proximity to the liquid crystals to provide efficient heating and temperature sensing.
    Type: Grant
    Filed: October 7, 2003
    Date of Patent: February 24, 2009
    Assignee: American Panel Corporation
    Inventors: William R. Dunn, Keuk-Sang Kwon, Hyoung Yol Park
  • Publication number: 20080158496
    Abstract: A liquid crystal display device includes first and second substrates spaced apart from each other, on which a display area and a non-display area are defined, a liquid crystal layer interposed between the first and second substrates, a seal pattern in the non-display area between the first and second substrates, a driver in the non-display area on the first substrate, column spacers in the display area between the first and second substrates, and a first auxiliary spacer between the driver and the second substrate.
    Type: Application
    Filed: July 2, 2007
    Publication date: July 3, 2008
    Applicant: LG.PHILIPS LCD CO., LTD.
    Inventors: Hong-Jae Kim, Tae-Man Kim, Keuk-Sang Kwon
  • Publication number: 20080049183
    Abstract: A flat panel display having a black mask EMI layer isolated from Vcom and tied to zero potential. The flat panel display has an integral metal heater layer and thermal sensor that are in close proximity to the liquid crystals to provide efficient heating and temperature sensing.
    Type: Application
    Filed: August 31, 2007
    Publication date: February 28, 2008
    Applicant: American Panel Corporation
    Inventors: William Dunn, Keuk-Sang Kwon, Hyoung-Yol Park, In-Byeong Kang
  • Patent number: 7324176
    Abstract: A flat panel display having a black mask EMI layer isolated from Vcom and tied to zero potential. The flat panel display has an integral metal heater layer and thermal sensor that are in close proximity to the liquid crystals to provide efficient heating and temperature sensing.
    Type: Grant
    Filed: February 2, 2004
    Date of Patent: January 29, 2008
    Assignee: American Panel Corporation
    Inventors: William R. Dunn, Keuk-Sang Kwon, Hyoung-Yol Park, In-Byeong Kang
  • Patent number: 7292291
    Abstract: A flat panel display having a black mask EMI layer isolated from Vcom and tied to zero potential. The flat panel display has an integral metal heater layer and thermal sensor that are in close proximity to the liquid crystals to provide efficient heating and temperature sensing.
    Type: Grant
    Filed: February 2, 2004
    Date of Patent: November 6, 2007
    Assignee: American Panel Corporation
    Inventors: William R. Dunn, Keuk-Sang Kwon, Hyoung-Yol Park, In-Byeong Kang