Patents by Inventor Jong Hee Hwang

Jong Hee Hwang 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).

  • Publication number: 20250060806
    Abstract: The present disclosure relates to a display device, a luminance control method thereof, and a mobile terminal using the same. The display device includes a display panel in which a pixel array including at least a first pixel region and a second pixel region are disposed; a touch sensor disposed on the pixel array; a display panel driver configured to write pixel data of an input image to pixels in the first pixel region and the second pixel region; a touch sensor driver configured to drive the touch sensor and detect a touch input on the pixel array to generate touch coordinate data; and a luminance control device configured to lower the luminance of one of the first and second pixel regions in at least some gray scales when the touch input is detected on the pixel array.
    Type: Application
    Filed: November 4, 2024
    Publication date: February 20, 2025
    Inventors: Jong Hee Hwang, Su Jin Kwon
  • Patent number: 12164359
    Abstract: The present disclosure relates to a mobile terminal. The mobile terminal includes a touch sensor driver; a sensor configured to sense changes in movement and inclination in real time; a host system connected to the sensor and configured to transmit a pixel data of the input image to a display panel driver, and to receive a touch coordinate data from a touch sensor driver; and a luminance control device configured to control a luminance a first pixel region and a luminance of a second pixel region in the display panel. The luminance control device is configured to lower the luminance of the second pixel region responsive to detecting the touch input on the second pixel region or, responsive to the mobile terminal being rotated or inverted.
    Type: Grant
    Filed: May 3, 2023
    Date of Patent: December 10, 2024
    Assignee: LG Display Co., Ltd.
    Inventors: Jong Hee Hwang, Su Jin Kwon
  • Patent number: 12130984
    Abstract: A display device includes a pixel unit including a sensing region where pixels are disposed at a first pixels per inch (PPI) and a display region where pixels are disposed at a second PPI; a touch sensor unit disposed on the pixel unit, and including a first touch sensor region where touch sensors are disposed at a first electrode density and a second touch sensor region where touch sensors are disposed at a second electrode density higher than the first electrode density; a display panel driver configured to drive the pixel unit; and a touch sensor driver configured to change at least one of a voltage level of a driving pulse applied to the first touch sensor region and an accumulated number of the touch signals sensed from the first touch sensor region based on the touch signals sensed from the first touch sensor region overlapping with the sensing region.
    Type: Grant
    Filed: August 29, 2022
    Date of Patent: October 29, 2024
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Jong Hee Hwang, Bo Gun Seo, Kyoung Hwan Kim
  • Patent number: 11978406
    Abstract: A display device includes: a plurality of pixels connected to power lines to which a pixel driving voltage and a reference voltage are applied, a plurality of data lines to which data voltages of pixel data of an input image are applied, and a plurality of gate lines to which a gate signal is applied; a display panel driver configured to write the pixel data of the input image to the plurality of pixels during a display mode of the display device and to write preset sensing data to the plurality of pixels during a sensing mode of the display device; and a sensing unit configured to simultaneously sense the plurality of the pixels by measuring a current flowing through a first power line from the plurality of power lines to which the pixel driving voltage is applied to the plurality of pixels during the sensing mode.
    Type: Grant
    Filed: October 4, 2022
    Date of Patent: May 7, 2024
    Assignee: LG Display Co., Ltd.
    Inventors: Hyun Gi Hong, Jong Hee Hwang
  • Publication number: 20230273667
    Abstract: The present disclosure relates to a display device, a luminance control method thereof, and a mobile terminal using the same. The display device includes a display panel in which a pixel array including at least a first pixel region and a second pixel region are disposed; a touch sensor disposed on the pixel array; a display panel driver configured to write pixel data of an input image to pixels in the first pixel region and the second pixel region; a touch sensor driver configured to drive the touch sensor and detect a touch input on the pixel array to generate touch coordinate data; and a luminance control device configured to lower the luminance of one of the first and second pixel regions in at least some gray scales when the touch input is detected on the pixel array.
    Type: Application
    Filed: May 3, 2023
    Publication date: August 31, 2023
    Inventors: Jong Hee Hwang, Su Jin Kwon
  • Patent number: 11681350
    Abstract: The present disclosure relates to a display device, a luminance control method thereof, and a mobile terminal using the same. The display device includes a display panel in which a pixel array including at least a first pixel region and a second pixel region are disposed; a touch sensor disposed on the pixel array; a display panel driver configured to write pixel data of an input image to pixels in the first pixel region and the second pixel region; a touch sensor driver configured to drive the touch sensor and detect a touch input on the pixel array to generate touch coordinate data; and a luminance control device configured to lower the luminance of one of the first and second pixel regions in at least some gray scales when the touch input is detected on the pixel array.
    Type: Grant
    Filed: July 9, 2021
    Date of Patent: June 20, 2023
    Assignee: LG Display Co., Ltd.
    Inventors: Jong Hee Hwang, Su Jin Kwon
  • Publication number: 20230176684
    Abstract: A display device includes a pixel unit including a sensing region where pixels are disposed at a first pixels per inch (PPI) and a display region where pixels are disposed at a second PPI; a touch sensor unit disposed on the pixel unit, and including a first touch sensor region where touch sensors are disposed at a first electrode density and a second touch sensor region where touch sensors are disposed at a second electrode density higher than the first electrode density; a display panel driver configured to drive the pixel unit; and a touch sensor driver configured to change at least one of a voltage level of a driving pulse applied to the first touch sensor region and an accumulated number of the touch signals sensed from the first touch sensor region based on the touch signals sensed from the first touch sensor region overlapping with the sensing region.
    Type: Application
    Filed: August 29, 2022
    Publication date: June 8, 2023
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Jong Hee HWANG, Bo Gun SEO, Kyoung Hwan KIM
  • Publication number: 20230172027
    Abstract: The present disclosure is related to a display panel for interfacing with a plurality of sensors that are attached to a bottom surface of the display panel. The display panel includes a light emitting layer configured to output images, and a protective layer configured to protect the display panel. The light emitting layer includes a display region having a first pixel density, a first transmissive region having a second pixel density that is less than the first pixel density, and a second transmissive region having a third pixel density that is less than the second pixel density. The first transmissive region is configured to interface with a first sensor and the second transmissive region is configured to interface with a second sensor, wherein a function of the first sensor requires less light than a function of the second sensor.
    Type: Application
    Filed: November 10, 2022
    Publication date: June 1, 2023
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Jong Hee HWANG, Ki Duk KIM, Yong Kyun CHOI, Jung Hoon LEE
  • Publication number: 20230137365
    Abstract: A display device includes: a plurality of pixels connected to power lines to which a pixel driving voltage and a reference voltage are applied, a plurality of data lines to which data voltages of pixel data of an input image are applied, and a plurality of gate lines to which a gate signal is applied; a display panel driver configured to write the pixel data of the input image to the plurality of pixels during a display mode of the display device and to write preset sensing data to the plurality of pixels during a sensing mode of the display device; and a sensing unit configured to simultaneously sense the plurality of the pixels by measuring a current flowing through a first power line from the plurality of power lines to which the pixel driving voltage is applied to the plurality of pixels during the sensing mode.
    Type: Application
    Filed: October 4, 2022
    Publication date: May 4, 2023
    Inventors: Hyun Gi Hong, Jong Hee Hwang
  • Patent number: 11327615
    Abstract: Embodiments relate to a touch panel and a method of operating the touch panel. The touch panel includes first electrodes and second electrodes separated from and intersecting the first electrodes. The first electrodes are applied with a touch driving pulse during a first sensing mode and a second sensing mode. The second electrodes sense a first touch sense signal responsive to the touch driving pulse in the first sensing mode. A subset of the second electrodes senses a second touch sense signal responsive to the touch driving pulse in the second sensing mode.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: May 10, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: Jong Hee Hwang, Ki Duk Kim, Sung Yong Cho, Eun Jung Kim
  • Publication number: 20220051617
    Abstract: The present disclosure relates to a display device, a luminance control method thereof, and a mobile terminal using the same. The display device includes a display panel in which a pixel array including at least a first pixel region and a second pixel region are disposed; a touch sensor disposed on the pixel array; a display panel driver configured to write pixel data of an input image to pixels in the first pixel region and the second pixel region; a touch sensor driver configured to drive the touch sensor and detect a touch input on the pixel array to generate touch coordinate data; and a luminance control device configured to lower the luminance of one of the first and second pixel regions in at least some gray scales when the touch input is detected on the pixel array.
    Type: Application
    Filed: July 9, 2021
    Publication date: February 17, 2022
    Inventors: Jong Hee Hwang, Su Jin Kwon
  • Patent number: 10810918
    Abstract: A video display device capable of compensating for display defects, comprising: liquid crystal panel for displaying an image through a pixel matrix; a data driver for outputting data to data lines of the liquid crystal display panel; a gate driver for driving the gate lines of the liquid crystal display panel; a timing controller for receiving compensated data, uncompensated data and synchronizing signals to output a gate control signal to the gate driver and to output both resultant data and a data control signal to the data driver; and a memory for storing information on point defect information on the liquid crystal display panel, and at least one of horizontal and vertical line defects of the liquid crystal display panel of the liquid crystal display panel; and a data compensation circuit for receiving display data and synchronizing signals, and outputting compensated data to the timing controller based on the information in the memory and uncompensated data to the timing controller, wherein the data comp
    Type: Grant
    Filed: June 3, 2008
    Date of Patent: October 20, 2020
    Assignee: LG Display Co., Ltd.
    Inventor: Jong Hee Hwang
  • Publication number: 20200142514
    Abstract: Embodiments relate to a touch panel and a method of operating the touch panel. The touch panel includes first electrodes and second electrodes separated from and intersecting the first electrodes. The first electrodes are applied with a touch driving pulse during a first sensing mode and a second sensing mode. The second electrodes sense a first touch sense signal responsive to the touch driving pulse in the first sensing mode. A subset of the second electrodes senses a second touch sense signal responsive to the touch driving pulse in the second sensing mode.
    Type: Application
    Filed: December 27, 2019
    Publication date: May 7, 2020
    Inventors: Jong Hee HWANG, Ki Duk KIM, Sung Yong CHO, Eun Jung KIM
  • Patent number: 10564742
    Abstract: Embodiments relate to a touch panel and a method of operating the touch panel. The touch panel includes first electrodes and second electrodes separated from and intersecting the first electrodes. The first electrodes are applied with a touch driving pulse during a first sensing mode and a second sensing mode. The second electrodes sense a first touch sense signal responsive to the touch driving pulse in the first sensing mode. A subset of the second electrodes senses a second touch sense signal responsive to the touch driving pulse in the second sensing mode.
    Type: Grant
    Filed: May 15, 2015
    Date of Patent: February 18, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Jong Hee Hwang, Ki Duk Kim, Sung Yong Cho, Eun Jung Kim
  • Patent number: 10289226
    Abstract: Provided is a touch force sensing device. The touch force sensing device comprises a first substrate, a resistor on one surface of the first substrate, a second substrate facing the first substrate, a driving electrode disposed on a surface of the second substrate facing the first substrate and spaced from the resistor and a sensing electrode disposed on the same surface as the driving electrode and electrically connected to the driving electrode through the resistor by an external touch input.
    Type: Grant
    Filed: May 24, 2017
    Date of Patent: May 14, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Jong Gu Heo, Jong Hee Hwang
  • Patent number: 9904365
    Abstract: One embodiment of a touch panel comprises a substrate; a sensing electrode formed over the substrate, the sensing electrode configured to sense finger touch input and to provide haptic feedback; and an antenna formed over the substrate, the antenna configured to sense pen touch input; wherein a first mode in which the finger touch input is sensed, a second mode in which the haptic feedback is provided, and a third mode in which pen touch input is received are time-divisionally performed.
    Type: Grant
    Filed: July 23, 2014
    Date of Patent: February 27, 2018
    Assignee: LG Display Co., Ltd.
    Inventors: Ji Eun Son, Ki Duk Kim, Jong Hee Hwang, Jong hyun Han
  • Patent number: 9851840
    Abstract: Embodiments relate to a touch panel with a haptic function and a method of operating the touch panel. The touch panel includes first electrodes and second electrodes intersecting the first electrodes. The touch panel further includes an elastic dielectric member disposed between the first electrodes and the second electrodes to separate the first electrodes and the second electrodes. The first electrodes are applied with a touch driving pulse during a sensing mode, and are applied with a voltage during a haptic mode. The second electrodes sense a touch sense signal responsive to the touch driving pulse in the sensing mode, and the second electrodes are applied with a reference voltage in the haptic mode. The elastic dielectric member vibrates in response to the voltage applied to the first electrodes in the haptic mode.
    Type: Grant
    Filed: May 5, 2016
    Date of Patent: December 26, 2017
    Assignee: LG Display Co., Ltd.
    Inventors: Jong Hee Hwang, Sung Yong Cho, Eun Jung Kim, Ki Seon Kim
  • Patent number: 9851817
    Abstract: An optical touch display device which is advantageous in high-speed driving, large-area touch sensing, and multi-touch sensing because of use of an image map and which can improve touch sensing performance and a driving method thereof are provided. The optical touch display device includes a display device configured to display a display image based on input source image data and an image map for touch sensing, an optical touch pen configured to detect map information of the image map displayed on the display device, and a position detector configured to detect position information (coordinate information) on a screen based on the map information.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: December 26, 2017
    Assignee: LG Display Co., Ltd.
    Inventors: Jung Hee Kim, Ki Duk Kim, Jong Hee Hwang, Seung Seok Oh
  • Publication number: 20170344165
    Abstract: Provided is a touch force sensing device. The touch force sensing device comprises a first substrate, a resistor on one surface of the first substrate, a second substrate facing the first substrate, a driving electrode disposed on a surface of the second substrate facing the first substrate and spaced from the resistor and a sensing electrode disposed on the same surface as the driving electrode and electrically connected to the driving electrode through the resistor by an external touch input.
    Type: Application
    Filed: May 24, 2017
    Publication date: November 30, 2017
    Inventors: Jong Gu HEO, Jong Hee HWANG
  • Patent number: 9678589
    Abstract: Disclosed is a touch sensing display device capable of sensing both touch position and touch force, shortening a driving time for the touch sensing, and improving touch sensing efficiency, and an apparatus for driving thereof. The display device can include a color filter, a plurality of first touch electrodes for touch force sensing, and a plurality of second touch electrodes for touch position sensing and separated from the first touch electrodes by the color filter. The display can also include a force sensing touch driver for the first touch electrodes and a touch position touch driver for the second touch electrodes.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: June 13, 2017
    Assignee: LG Display Co., Ltd.
    Inventors: Jong Hee Hwang, Sung Yong Cho, Eun Jung Kim