Patents by Inventor Yangsik Lee

Yangsik 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: 10996785
    Abstract: A touch display device and a touch display panel are provided. The touch display panel includes a bend area adjacent to the periphery of the touch display panel, and touch lines disposed in the bend area have zigzag shapes that extend at angles with respect to a bend axis about which the bend area is bent. A first dielectric layer includes a compensation pattern that is located in the bend area and includes an opening that extends in a direction parallel to the bend axis. A second dielectric layer protrudes into the opening of the compensation pattern in a depth direction. During bending of the bend area, this configuration disperses force applied to portions of the touch lines and the dielectric layers in the bend area. This can consequently prevent both cracking due to bending and moisture permeation due to cracks.
    Type: Grant
    Filed: April 10, 2020
    Date of Patent: May 4, 2021
    Assignee: LG Display Co., Ltd.
    Inventors: Yangsik Lee, JiHyun Jung, DeukSu Lee, JaeGyun Lee, Ruda Rhe, Jeonghoon Lee, Su Chang An
  • Publication number: 20210124448
    Abstract: The present disclosure relates to a touch display device, and more specifically, relates to a touch display device having a bottom emission structure. According to the touch display device, by disposing a touch electrode and a touch planarization layer between a substrate and a thin film transistor, a touch sensing function can be implemented without affecting the disposing of components for display driving. Further, by disposing a shielding electrode to which a constant voltage or a signal equal to a touch driving signal is applied between the touch electrode and a light emitting element, a noise of a touch sensing signal caused by display driving can be reduced and the performance of touch sensing performed together with the display driving can be improved.
    Type: Application
    Filed: August 4, 2020
    Publication date: April 29, 2021
    Inventors: HwiDeuk Lee, YongChan Park, Taeyun Kim, Yangsik Lee
  • Patent number: 10976870
    Abstract: A display device and a method of fabricating the same. An active area having pixels defined therein is provided on a substrate. A pad area is provided on the substrate to receive signals to be transferred to the active area. A wiring area is provided on the substrate, with electrical lines being disposed therein to connect the active area and the pad area. An inorganic film is disposed in the active area and the wiring area, with a thickness of the inorganic film, located in the wiring area, is lower than a thickness of the inorganic film, located in the active area. Electrical lines are prevented from being broken in a bendable structure intended for a narrow bezel.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: April 13, 2021
    Assignee: LG Display Co., Ltd.
    Inventors: Ruda Rhe, JiHyun Jung, Yangsik Lee
  • Patent number: 10976865
    Abstract: Discussed are a touch display panel, a touch display device, and a driving method thereof, wherein a constant voltage is applied to a cathode electrode during a period for sensing a finger touch or a pen touch, thereby performing touch sensing while performing display driving. In addition, a signal having the same phase and potential as the signal applied to the touch electrode is applied to the cathode electrode during a period for transmitting an uplink signal to the pen, thereby eliminating parasitic capacitance between the touch electrode and the cathode electrode, preventing transmission delay of the uplink signal, improving the recognition rate of the uplink signal, and enhancing the performance of pen-touch sensing.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: April 13, 2021
    Assignee: LG DISPLAY CO., LTD.
    Inventors: HwiDeuk Lee, Sangkyu Kim, Taeyun Kim, Yangsik Lee, Jaeseung Kim
  • Patent number: 10976871
    Abstract: A touch display device can include a touch panel including a plurality of touch electrodes including a first touch electrode and a second touch electrode, the first touch electrode being adjacent to and electrically isolated from the second touch electrode; and a touch-sensing circuit configured to drive the touch panel and sense a touch or touch coordinates, in which an outline portion of the first touch electrode and an outline portion of the second touch electrode have different shapes within a boundary area between the first touch electrode and the second touch electrode.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: April 13, 2021
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Yangsik Lee, JiHyun Jung, SuChang An, JaeGyun Lee
  • Patent number: 10971562
    Abstract: A display apparatus includes a substrate having active and non-active areas; data lines and gate lines on the substrate; a driving line in the non-active area; a plurality of pixels connected to the data lines and the gate lines, each pixel including: a light emitting diode, and a driving transistor with the driving line under a cathode of the light emitting diode in the non-active area; a shield layer between the cathode and the driving line; an encapsulation layer on the cathode; a touch electrode on the encapsulation layer in the active area, and a touch line on the encapsulation layer to supply a touch signal to the touch electrode. The driving line is below the touch line in the non-active area. The encapsulation layer has a sloped surface, and the touch line is on the sloped surface such that the touch line has a corresponding slope.
    Type: Grant
    Filed: July 15, 2019
    Date of Patent: April 6, 2021
    Assignee: LG Display Co., Ltd.
    Inventors: HwiDeuk Lee, Yangsik Lee
  • Patent number: 10950193
    Abstract: A display apparatus includes a substrate including an active area where a plurality of pixels is connected to gate lines and data lines intersecting with each other, and a non-active area where a plurality of lines for transmitting signals for driving the plurality of pixels is disposed; a touch signal generation circuit disposed on the non-active area, receiving a touch clock signal and outputting a touch driving signal; and a touch sensor part receiving the touch driving signal and generating touch information on a touch point at the active area.
    Type: Grant
    Filed: July 12, 2019
    Date of Patent: March 16, 2021
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Jaeseung Kim, HwiDeuk Lee, Yangsik Lee
  • Patent number: 10949038
    Abstract: An organic light-emitting display panel having a built-in touchscreen includes a plurality of subpixels defined therein by a plurality of data lines and a plurality of gate lines, an encapsulation layer having an encapsulating function, and a color filter layer located on the encapsulation layer. An organic light-emitting display device includes the organic light-emitting display panel. Both the organic light-emitting display panel having a built-in touchscreen and the organic light-emitting display device having a built-in touchscreen is provided with a structure enabling a touchscreen disposed therewithin.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: March 16, 2021
    Assignee: LG Display Co., Ltd.
    Inventors: Hyangmyoung Gwon, SeungHee Nam, Kwon-Shik Park, DeukSu Lee, BuYeol Lee, Yangsik Lee
  • Publication number: 20210064188
    Abstract: Provided is a touch display device including a folding area in an active area. The same pattern of touch electrodes can be maintained in both a reference area and a folding area and cracks on touch electrodes in the folding area, by applying a pattern structure of a touch insulation film disposed in the folding area. Therefore, the degradation of touch sensing performance, caused by cracks on the touch electrodes in the folding area, can be prevented and touch sensing sensitivity can be uniform in the reference area and the folding area, thereby improving touch sensing performance of the touch display device including the folding area.
    Type: Application
    Filed: July 27, 2020
    Publication date: March 4, 2021
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Yangsik Lee, HwiDeuk Lee, TaeWoo Kim, YongChan Park
  • Publication number: 20210064166
    Abstract: A display device includes a light-emitting device; an encapsulation layer disposed on the light-emitting device; an insulating layer on the encapsulation layer; a plurality of first touch sensors on an upper surface of the insulating layer, and arranged in a first direction; a plurality of second touch sensors on the upper surface of the insulating layer, and arranged in a second direction intersecting the first direction; and a discharge pattern disposed between the encapsulation layer and the insulating layer, and overlapping an area between a first touch sensor of the plurality of first touch sensors and a second touch sensor of the plurality of second touch sensors. Further, a first end of the discharge pattern is connected to one of the first touch sensor and the second touch sensor through a contact hole of the insulating layer.
    Type: Application
    Filed: November 16, 2020
    Publication date: March 4, 2021
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Yangsik LEE, JiHyun JUNG
  • Publication number: 20210064172
    Abstract: Provided is a touch display device. Because a shielding electrode, which is disposed in a non-active area and electrically coupled between a common electrode and a common voltage supply line, is located between a touch routing line and a signal line, the effects of noise caused by the signal line on the touch routing line may be reduced. Further, an encapsulation portion located on the shielding electrode has a planarized structure. The resulting maintenance of a certain distance between the shielding electrode and the touch routing line may reduce noise caused by the signal line from indirectly affecting the touch routing line through the shielding electrode.
    Type: Application
    Filed: July 14, 2020
    Publication date: March 4, 2021
    Inventors: Yangsik LEE, HwiDeuk LEE, Jungho JO
  • Patent number: 10915210
    Abstract: Example embodiments of the present disclosure relate to a touch display device.
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: February 9, 2021
    Assignee: LG DISPLAY CO., LTD.
    Inventors: HwiDeuk Lee, Yangsik Lee, Jaeseung Kim
  • Patent number: 10908758
    Abstract: The present disclosure relates to a touch display device and a touch sensing method, and more specifically, to a touch display device and a touch sensing method that provides a single-layered touch sensor structure by a touch electrode connecting line that electrically connects touch electrodes arranged in one direction and is arranged to bypass and surround touch electrodes arranged in another direction, thereby enabling a simple manufacturing process, a high manufacturing yield, and a low manufacturing cost.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: February 2, 2021
    Assignee: LG Display Co., Ltd.
    Inventors: Ruda Rhe, JiHyun Jung, DeukSu Lee, SuChang An, JaeGyun Lee, Hyangmyoung Gwon, Yangsik Lee
  • Publication number: 20210026489
    Abstract: Embodiments of the present disclosure relate to a touch display device, in which touch routing lines arranged in a non-active area do not overlap signal lines supplying a signal for driving a display, and in which the size of the area in which a connection electrode, which is positioned between the touch routing lines and the signal lines, overlaps the signal lines is reduced, thereby reducing direct and indirect noise due to the signal lines. In addition, the noise due to the signal lines can be dispersed through a shielding electrode by arranging the shielding electrode, to which a constant voltage is applied, in an opening in the connection electrode, thereby further reducing the noise of a touch sensing signal and improving touch sensing performance thereof.
    Type: Application
    Filed: July 8, 2020
    Publication date: January 28, 2021
    Applicant: LG DISPLAY CO., LTD.
    Inventors: HwiDeuk Lee, YangSik Lee, ChangSeok Oh
  • Publication number: 20210026513
    Abstract: A touch display device has a small bezel size even when touch routing lines connecting a touch sensor to a touch sensing circuit are disposed in a non-display area and can improve touch sensitivity by preventing the formation of parasitic capacitance caused by the touch routing lines.
    Type: Application
    Filed: June 26, 2020
    Publication date: January 28, 2021
    Applicant: LG Display Co., Ltd.
    Inventors: HwiDeuk LEE, Yangsik LEE, YongChan PARK
  • Publication number: 20210026478
    Abstract: Embodiments of the present disclosure relate to a touch display device, and more particularly, to a touch display device which can have a small bezel size even when touch routing lines connecting a touch sensor to a touch sensing circuit are disposed in a non-display area and which can improve touch sensitivity by preventing or minimizing the formation of parasitic capacitance that can be caused by the touch routing lines.
    Type: Application
    Filed: July 7, 2020
    Publication date: January 28, 2021
    Applicant: LG DISPLAY CO., LTD.
    Inventors: HwiDeuk LEE, Yangsik LEE
  • Publication number: 20210026514
    Abstract: Embodiments of the present disclosure relate to a touch sensing unit and a touch display device, in which touch routing lines can be arranged so as not to overlap signal lines supplying a signal for driving a display and the area of an electrode located between the signal line and in which the touch routing line can be reduced, thereby reducing parasitic capacitance between the signal line and the touch routing line. In addition, it is possible to further reduce noise due to the signal lines and to improve the performance of touch sensing by distributing noise due to the signal lines through touch dummy electrodes positioned between the touch electrodes and the touch routing lines so as to overlap the signal lines.
    Type: Application
    Filed: July 10, 2020
    Publication date: January 28, 2021
    Applicant: LG DISPLAY CO., LTD.
    Inventors: HwiDeuk Lee, YangSik Lee, YongChan Park, ChangSeok Oh
  • Publication number: 20210026477
    Abstract: Embodiments of the present disclosure relate to a touch display device, and more particularly, to a touch display device which can have a small bezel size even when touch routing lines connecting a touch sensor to a touch sensing circuit are disposed in a non-display area and which can improve touch sensitivity by preventing or minimizing the formation of parasitic capacitance that can be caused by the touch routing lines.
    Type: Application
    Filed: July 7, 2020
    Publication date: January 28, 2021
    Applicant: LG DISPLAY CO., LTD.
    Inventors: HwiDeuk LEE, Yangsik LEE, YongChan PARK, Sungsu HAN
  • Patent number: 10871863
    Abstract: A display device including an active area and a non-active area; the active-area including a light-emitting device; an encapsulation layer disposed on the light-emitting device; a touch buffer layer disposed on the encapsulation layer; a plurality of first touch sensors disposed in a touch sensing area on the encapsulation layer; a plurality of second touch sensors disposed in the touch sensing area on the encapsulation layer and on a same layer as the first touch sensors; and a first discharge pattern extending into an area between a first touch sensor of the plurality of first touch sensors and an adjacent second touch sensor of the plurality of second touch sensors, and having one end connected to the first touch sensor or the second touch sensor.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: December 22, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Yangsik Lee, Jihyun Jung
  • Patent number: 10852897
    Abstract: Embodiments of the present disclosure relate to a touch panel and a touch display panel, wherein touch electrodes including bodies and wings are arranged so as to interlock with each other to thus reduce a difference in sensing sensitivity depending on position and a movement direction, thereby improving uniformity of touch sensing. In addition, the body and wing of the touch electrode can be arranged so as to be varied in length/width depending on the position thereof, so that the boundary area between the touch electrodes is increased, thereby improving the intensity of a touch-sensing signal, and so that sensing time is reduced, thereby enhancing the performance of touch sensing.
    Type: Grant
    Filed: August 16, 2019
    Date of Patent: December 1, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: HwiDeuk Lee, DeukSu Lee, JaeGyun Lee, Yangsik Lee