Patents by Inventor Taegung Kim

Taegung 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: 11545095
    Abstract: One or more embodiments of the present disclosure provides a display device. The display device includes a display panel which includes a plurality of pixels; a threshold voltage sensing circuit which senses a threshold voltage of a light emitting diode included in the plurality of pixels, a data compensating circuit which corrects a data signal in accordance with a variation of the threshold voltage and accumulated data to generate a corrected data signal, and a data driver which generates a data voltage in accordance with the corrected data signal to output the data voltage to the display panel, in which the data compensating circuit periodically corrects the data signal in accordance with a look-up table in which a relationship of the variation of the threshold voltage and the accumulated data is described during an aging period to generate the corrected data signal. The display device according to the present disclosure improves an image quality of the display.
    Type: Grant
    Filed: December 4, 2020
    Date of Patent: January 3, 2023
    Assignee: LG Display Co., Ltd.
    Inventors: Junwoo Yun, Taegung Kim
  • Publication number: 20210201825
    Abstract: One or more embodiments of the present disclosure provides a display device. The display device includes a display panel which includes a plurality of pixels; a threshold voltage sensing circuit which senses a threshold voltage of a light emitting diode included in the plurality of pixels, a data compensating circuit which corrects a data signal in accordance with a variation of the threshold voltage and accumulated data to generate a corrected data signal, and a data driver which generates a data voltage in accordance with the corrected data signal to output the data voltage to the display panel, in which the data compensating circuit periodically corrects the data signal in accordance with a look-up table in which a relationship of the variation of the threshold voltage and the accumulated data is described during an aging period to generate the corrected data signal. The display device according to the present disclosure improves an image quality of the display.
    Type: Application
    Filed: December 4, 2020
    Publication date: July 1, 2021
    Inventors: Junwoo YUN, Taegung KIM
  • Patent number: 11036339
    Abstract: A touch sensor-integrated display device includes a display panel with a pixel array divided into a plurality of touch blocks, each touch block having a plurality of pixels for displaying an input image and at least one touch pixel for sensing touch input; a data drive circuit that applies a charging voltage to the touch pixel in each touch block through a touch sensing line and then senses an electrical charge discharged from the touch pixel and outputs the sensing result as a touch sensing value, wherein a signal line commonly connected to the pixels and the touch pixel in each touch block is used as the touch sensing line; and a timing controller that detects touch input based on the touch sensing value.
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: June 15, 2021
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Taegung Kim, Kyungrok Kim, Juyoung Noh
  • Patent number: 11011592
    Abstract: Disclosed is a light emitting display apparatus. The light emitting display apparatus includes a substrate including a display area including a plurality of pixel areas and a non-display area surrounding the display area, first to nth gate lines passing through the display area of the substrate, first to mth data lines passing through the display area of the substrate, first to mth pixel driving power lines passing through the display area of the substrate, a plurality of pixels provided in at least one pixel area of the substrate and connected to an adjacent gate line, an adjacent data line, and an adjacent pixel driving power line, and at least one data buffer chip provided in the display area of the substrate and connected to a corresponding data line of the first to mth data lines. Accordingly, a constant data voltage charging rate of each of the pixels is maintained regardless of a distance between a data driving circuit and each of the pixels.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: May 18, 2021
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Kyung-Rok Kim, Taegung Kim, SeungTae Kim
  • Patent number: 10908747
    Abstract: A display apparatus including a substrate including a display area includes a plurality of pixel areas and a non-display area surrounding the display area, a plurality of pixels including a pixel driving chip provided in each of the plurality of pixel areas of the substrate and a light emission part connected to the pixel driving chip, and a plurality of touch electrodes disposed in the display area to overlap two or more pixels. A first pixel driving chip of two or more pixel driving chips overlapping a corresponding touch electrode of the plurality of touch electrodes is connected to the corresponding touch electrode.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: February 2, 2021
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Taegung Kim, Kyung-Rok Kim
  • Patent number: 10867555
    Abstract: Disclosed is a light emitting display apparatus. The light emitting display apparatus includes a plurality of pixels provided in a display area of a substrate and connected to a data line, a clock line, and a pixel driving power line. The plurality of pixels each include a pixel driving chip connected to the data line, the clock line, and the pixel driving power line to sequentially output a driving current through a plurality of output terminals thereof and a plurality of light emitting devices respectively connected to the plurality of output terminals. Accordingly, a gate driving circuit and a gate line connected to the gate driving circuit are removed from one end of a display panel and omitted, thereby minimizing the number of pad parts disposed in the display panel.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: December 15, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Taegung Kim, Kyung-Rok Kim, Juyoung Noh
  • Patent number: 10839748
    Abstract: Disclosed is a light emitting display apparatus. The light emitting display apparatus includes a plurality of pixels provided in a display area of a substrate and connected to a data line, a clock line, and a pixel driving power line. The plurality of pixels each include a pixel driving chip connected to the data line, the clock line, and the pixel driving power line to sequentially output a driving current through a plurality of output terminals thereof and a plurality of light emitting devices respectively connected to the plurality of output terminals, and the plurality of light emitting devices respectively and sequentially receive the driving current through the plurality of output terminals to emit light of different colors. Accordingly, light having a plurality of colors are respectively emitted in subfields of a unit frame, thereby preventing the occurrence of color breaking.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: November 17, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Taegung Kim, Kyung-Rok Kim, SeungTae Kim
  • Patent number: 10818241
    Abstract: The display apparatus may include gate lines passing through a display area of a substrate, data lines passing through the display area of the substrate, pixel driving power lines passing through the display area of the substrate, a plurality of pixels having a pixel driving chip mounted on at least one pixel area defined on the substrate and connected and connected to an adjacent gate line and data line and a light emission part connected to the pixel driving chip, a gate driving chip array part mounted in a non-display area of the substrate and connected to the gate lines, and a data driving chip array part mounted in the non-display area of the substrate and connected to the data lines.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: October 27, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Kyung-Rok Kim, Taegung Kim, Haejin Park, EunJi Park, Kimin Son
  • Patent number: 10678356
    Abstract: A disclosed touch sensor integrated display device includes a display panel; and a data drive circuit configured to set a gate-source voltage to turn on a driving TFT in the display panel by applying a data voltage for touch sensing to a gate node of the driving TFT through a data line and a reference voltage to a source node of the driving TFT through a sensing line, during a reset period based on a scan control signal and a sensing control signal, and to output a sensing value by sensing a change in a source-drain current of the driving TFT caused by touch input, during a sensing period subsequent to the reset period.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: June 9, 2020
    Assignee: LG Dislay Co., Ltd.
    Inventors: Taegung Kim, Sangho Yu, Hyuckjun Kim
  • Patent number: 10614762
    Abstract: Disclosed is a display apparatus having a simplified configuration. The display apparatus includes a substrate including a display area including a plurality of pixel areas defined in a first direction and a second direction intersecting the first direction and a non-display area surrounding the display area, a plurality of pixels each including a pixel driving chip provided in a corresponding pixel area of the plurality of pixel areas of the substrate and a light emission part connected to the pixel driving chip, a plurality of pixel data transfer lines sequentially transferring digital pixel data to pixel driving chips of pixels arranged in the first direction, and a plurality of clock transfer lines sequentially transferring a reference clock to the pixel driving chips of the pixels arranged in the first direction. The pixel driving chip allows the light emission part to emit light, based on the digital pixel data and the reference clock input thereto.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: April 7, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Kyung-Rok Kim, Taegung Kim
  • Patent number: 10593261
    Abstract: A display device and a driving method of the display device are disclosed. The display device includes a display panel including a plurality of pixels, wherein each of the pixels is composed of three sub-pixels among a first color sub-pixel, a second color sub-pixel, a third color sub-pixel, and a fourth color sub-pixel, an image processing unit configured to change a color combination on a time axis in at least one of the pixels, and render sub-pixel data of an input image in the color combination, and a display panel driving circuit configured to write data received from the image processing unit to the pixels.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: March 17, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Taegung Kim, Kyungrok Kim, Jinhan Yoon
  • Patent number: 10522081
    Abstract: An electroluminescent display and a driving device of the electroluminescent display are discussed. The electroluminescent display includes first and second active areas divided from a screen, a first timing controller configured to transmit the pixel data of the first active area to be displayed on the first active area to a first driving circuit writing pixel data to pixels of the first active area, a second timing controller configured to transmit the pixel data of the second active area to be displayed on the second active area to a second driving circuit writing pixel data to pixels of the second active area, and a bridge circuit configured to distribute an input image to the first and second timing controllers, detect a logo data block from the input image, and transmit the logo data block to the first and second timing controllers.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: December 31, 2019
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Kyungrok Kim, Taegung Kim, Hyunwook Kim
  • Patent number: 10504404
    Abstract: An electroluminescent display and a driving device of the electroluminescent display are disclosed. The electroluminescent display includes first and second active areas divided from a screen, a first timing controller configured to transmit pixel data of the first active area to be displayed on the first active area to a first driving circuit writing pixel data to pixels of the first active area, a second timing controller configured to transmit pixel data of the second active area to be displayed on the second active area to a second driving circuit writing pixel data to pixels of the second active area, and a bridge circuit configured to distribute an input image to the first and second timing controllers and synchronize the first and second timing controllers when receiving a synchronization request signal from the first and second timing controllers.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: December 10, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Kyungrok Kim, Taegung Kim, Byungjae Lee
  • Publication number: 20190206330
    Abstract: Disclosed is a display apparatus with a simplified configuration. The display apparatus may include gate lines passing through a display area of a substrate, data lines passing through the display area of the substrate, pixel driving power lines passing through the display area of the substrate, a plurality of pixels having a pixel driving chip mounted on at least one pixel area defined on the substrate and connected and connected to an adjacent gate line and data line and a light emission part connected to the pixel driving chip, a gate driving chip array part mounted in a non-display area of the substrate and connected to the gate lines, and a data driving chip array part mounted in the non-display area of the substrate and connected to the data lines.
    Type: Application
    Filed: December 19, 2018
    Publication date: July 4, 2019
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Kyung-Rok Kim, Taegung Kim, Haejin Park, EunJi Park, Kimin Son
  • Publication number: 20190206325
    Abstract: Disclosed is a display apparatus having a simplified configuration. The display apparatus includes a substrate including a display area including a plurality of pixel areas defined in a first direction and a second direction intersecting the first direction and a non-display area surrounding the display area, a plurality of pixels each including a pixel driving chip provided in a corresponding pixel area of the plurality of pixel areas of the substrate and a light emission part connected to the pixel driving chip, a plurality of pixel data transfer lines sequentially transferring digital pixel data to pixel driving chips of pixels arranged in the first direction, and a plurality of clock transfer lines sequentially transferring a reference clock to the pixel driving chips of the pixels arranged in the first direction. The pixel driving chip allows the light emission part to emit light, based on the digital pixel data and the reference clock input thereto.
    Type: Application
    Filed: December 19, 2018
    Publication date: July 4, 2019
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Kyung-Rok Kim, Taegung Kim
  • Publication number: 20190206324
    Abstract: Disclosed is a light emitting display apparatus. The light emitting display apparatus includes a plurality of pixels provided in a display area of a substrate and connected to a data line, a clock line, and a pixel driving power line. The plurality of pixels each include a pixel driving chip connected to the data line, the clock line, and the pixel driving power line to sequentially output a driving current through a plurality of output terminals thereof and a plurality of light emitting devices respectively connected to the plurality of output terminals. Accordingly, a gate driving circuit and a gate line connected to the gate driving circuit are removed from one end of a display panel and omitted, thereby minimizing the number of pad parts disposed in the display panel.
    Type: Application
    Filed: December 17, 2018
    Publication date: July 4, 2019
    Applicant: LG Display Co., Ltd.
    Inventors: Taegung Kim, Kyung-Rok Kim, Juyoung Noh
  • Publication number: 20190206319
    Abstract: Disclosed is a light emitting display apparatus. The light emitting display apparatus includes a plurality of pixels provided in a display area of a substrate and connected to a data line, a clock line, and a pixel driving power line. The plurality of pixels each include a pixel driving chip connected to the data line, the clock line, and the pixel driving power line to sequentially output a driving current through a plurality of output terminals thereof and a plurality of light emitting devices respectively connected to the plurality of output terminals, and the plurality of light emitting devices respectively and sequentially receive the driving current through the plurality of output terminals to emit light of different colors. Accordingly, light having a plurality of colors are respectively emitted in subfields of a unit frame, thereby preventing the occurrence of color breaking.
    Type: Application
    Filed: December 19, 2018
    Publication date: July 4, 2019
    Applicant: LG Display Co., Ltd.
    Inventors: Taegung Kim, Kyung-Rok Kim, SeungTae Kim
  • Publication number: 20190204954
    Abstract: Disclosed is a display apparatus which senses a user touch and has a simplified configuration. The display apparatus including a substrate including a display area includes a plurality of pixel areas and a non-display area surrounding the display area, a plurality of pixels including a pixel driving chip provided in each of the plurality of pixel areas of the substrate and a light emission part connected to the pixel driving chip, and a plurality of touch electrodes disposed in the display area to overlap two or more pixels. A first pixel driving chip of two or more pixel driving chips overlapping a corresponding touch electrode of the plurality of touch electrodes is connected to the corresponding touch electrode.
    Type: Application
    Filed: December 19, 2018
    Publication date: July 4, 2019
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Taegung KIM, Kyung-Rok Kim
  • Publication number: 20190206961
    Abstract: Disclosed is a light emitting display apparatus. The light emitting display apparatus includes a substrate including a display area including a plurality of pixel areas and a non-display area surrounding the display area, first to nth gate lines passing through the display area of the substrate, first to mth data lines passing through the display area of the substrate, first to mth pixel driving power lines passing through the display area of the substrate, a plurality of pixels provided in at least one pixel area of the substrate and connected to an adjacent gate line, an adjacent data line, and an adjacent pixel driving power line, and at least one data buffer chip provided in the display area of the substrate and connected to a corresponding data line of the first to mth data lines. Accordingly, a constant data voltage charging rate of each of the pixels is maintained regardless of a distance between a data driving circuit and each of the pixels.
    Type: Application
    Filed: December 17, 2018
    Publication date: July 4, 2019
    Applicant: LG Display Co., Ltd.
    Inventors: Kyung-Rok Kim, Taegung Kim, SeungTae Kim
  • Publication number: 20190079606
    Abstract: A touch sensor-integrated display device includes a display panel with a pixel array divided into a plurality of touch blocks, each touch block having a plurality of pixels for displaying an input image and at least one touch pixel for sensing touch input; a data drive circuit that applies a charging voltage to the touch pixel in each touch block through a touch sensing line and then senses an electrical charge discharged from the touch pixel and outputs the sensing result as a touch sensing value, wherein a signal line commonly connected to the pixels and the touch pixel in each touch block is used as the touch sensing line; and a timing controller that detects touch input based on the touch sensing value.
    Type: Application
    Filed: July 18, 2018
    Publication date: March 14, 2019
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Taegung KIM, Kyungrok KIM, Juyoung NOH