Patents by Inventor Dong Cho

Dong Cho 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: 20210234195
    Abstract: Provided are a lithium secondary battery including a gel-type polymer electrolyte and a manufacturing method thereof. The lithium secondary battery includes a gel-type polymer electrolyte, which fills pores of an anode and a cathode in a state in which a crosslinkable monomer is crosslinked, and may thus inhibit an electrochemical side reaction and an electrolyte decomposition reaction, which occur in the anode and the cathode, thereby securing the improvement of battery characteristics and the stability of battery. The application of the gel-type polymer electrolyte makes it possible to easily manufacture, especially, a lithium secondary battery usable at a high voltage employing an LTO anode.
    Type: Application
    Filed: June 22, 2018
    Publication date: July 29, 2021
    Inventor: Myung Dong Cho
  • Patent number: 11069301
    Abstract: A display device can include a gate driver configured to drive gate lines of a panel; a data driver configured to drive data lines of the panel; a timing controller configured to control operations of the gate driver and the data driver; and a level shifter integrated circuit (IC) configured to receive a plurality of control signals from the timing controller, and generate and output a plurality gate control signals for controlling driving of the gate driver, in which the plurality of control signals include an on clock and an off clock, and the level shifter IC stores the on clock and the off clock in buffers based on one or more control signals from the timing controller, generates a plurality of scan clocks by logically processing the on clock and the off clock, and outputs the plurality of scan clocks to the gate driver.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: July 20, 2021
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Soon-Dong Cho, Jung-Jae Kim, Sang-Uk Lee, Hyung-Jin Choe
  • Publication number: 20210201784
    Abstract: A light emitting display device includes a display panel, a power supply configured to supply a first potential voltage and a second potential voltage to the display panel, and a switch circuit unit configured to sense the first potential voltage applied to the display panel and to feedback the first potential voltage to the power supply, wherein the power supply compensates for the first potential voltage based on the first potential voltage fed back from the switch circuit unit and to output the compensated first potential voltage.
    Type: Application
    Filed: December 18, 2020
    Publication date: July 1, 2021
    Applicant: LG Display Co., Ltd.
    Inventors: Jung-Jae KIM, Yong-Chul KWON, Soon-Dong CHO, Sang-Uk LEE, Dongwon PARK
  • Publication number: 20210183319
    Abstract: A display device includes a display panel including pixels, and data lines and gate lines connected to the pixels, a timing controller configured to output source driving bit information and gate driving bit information through an intra-interface signal, a source driver configured to generate data driving signal based on the source driving bit information and to supply the data driving signal to the data lines, and a gate driver configured to generate a gate driving signal based on the gate driving bit information and to supply the gate driving signal to the gate lines, wherein the intra-interface signal is configured with predetermined data transmission units and includes both the source driving bit information and the gate driving bit information every 1 data transmission unit.
    Type: Application
    Filed: December 16, 2020
    Publication date: June 17, 2021
    Applicant: LG Display Co., Ltd.
    Inventors: Soon-Dong CHO, Jung-Jae KIM, Min-Gyu PARK, Jae-Won HAN, Dong-Won PARK
  • Publication number: 20210020134
    Abstract: A display device includes a display panel and a level shifter. The display panel displays images. The level shifter includes a signal pad through which a clock signal to drive the display panel is output and a reverse signal pad through which a reverse clock signal different from the clock signal is output, and the reverse signal pad is in an electrically floated state.
    Type: Application
    Filed: July 15, 2020
    Publication date: January 21, 2021
    Applicant: LG Display Co., Ltd.
    Inventors: Se-Dong PARK, Soon-Dong CHO, Dong-Ju KIM, Hee-Jung HONG, Jung-Jae KIM
  • Publication number: 20210020137
    Abstract: The present disclosure relates to a level shifter and a display device using the same, and the level shifter includes a first transistor configured to increase a voltage of an output signal, a second transistor configured to lower a voltage of the output signal, a first driver configured to vary a gate voltage of the first transistor in response to a first Vgs signal being varied within a transition time of the output signal, and a second driver configured to vary a gate voltage of the second transistor in response to a second Vgs signal being varied within a transition time of the output signal.
    Type: Application
    Filed: July 16, 2020
    Publication date: January 21, 2021
    Applicant: LG Display Co., Ltd.
    Inventors: Hoon JANG, Juno HUR, Dong Ju KIM, Soon Dong CHO
  • Patent number: 10838039
    Abstract: A vehicle radar. In the vehicle radar, a high-pass filter is disposed on a signal line connecting a transmitting chip and a receiving chip, the signal line allowing a local oscillation signal to be transferred therethrough. The high-pass filter prevents noise from being introduced through the signal line, along which the local oscillation signal is transferred. This prevents the accuracy of detection from being lowered by low-frequency noise generated from the interior of the vehicle radar. The high-pass filter connected to the signal line is embodied as a variety of configurations, thereby providing a structure able to effectively suppress low-frequency noise while maintaining the existing structure of the vehicle radar.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: November 17, 2020
    Assignee: MANDO CORPORATION
    Inventor: Hyeon Dong Cho
  • Publication number: 20200273780
    Abstract: A semiconductor device includes a substrate, an interlayer insulating layer on the substrate, a first etch stop layer on the substrate, a first through-silicon-via (TSV) configured to pass vertically through the substrate and the interlayer insulating layer, and a second TSV configured to pass vertically through the substrate, the interlayer insulating layer, and the first etch stop layer, wherein the second TSV has a width greater than that of the first TSV.
    Type: Application
    Filed: November 8, 2019
    Publication date: August 27, 2020
    Inventors: Kwang Wuk Park, Sung Dong Cho, Eun Ji Kim, Hak Seung Lee, Dae Suk Lee, Dong Chan Lim, Sang Jun Park
  • Patent number: 10726787
    Abstract: A chip on film and a display device including the same selectively outputs gate transmission signals and data outputs to reduce the number of output pads in a data driving IC. The COF includes first to third groups of data input pads, gate input pads, and output pads. A data driving IC includes first to third groups of output buffers, a first switchable output unit configured to selectively supply gate transmission signals and an output of the first group of output buffers to the first group of output pads, and a second switchable output unit configured to selectively supply the gate transmission signals and an output of the third group of output buffers to the third group of output pads. An output of the second group of output buffers is supplied to the second group of output pads between the first and the third groups of output pads.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: July 28, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Soon-Dong Cho, Jae-Won Han, Jun-O Hur, Dong-Ju Kim
  • Patent number: 10726766
    Abstract: Disclosed herein are a display device capable of reducing the number of transmission lines by enabling a master circuit to perform communication with a plurality of slave circuits, which utilize different interfaces, through a common transmission line in a time divisional manner, and an interface method thereof. A timing controller uses a common transmission line of a gamma voltage generator and a level shifter which respectively utilize first and second interfaces and perform communication using the first and second interfaces in a time divisional manner.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: July 28, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Soon-Dong Cho, Jung-Jae Kim, Jae-Won Han, Hyung-Jin Choe
  • Patent number: 10718859
    Abstract: Embodiments disclosed herein relates to a radar device, and more particularly, to a radar device having a structure that reduces the influence of an internal reflected wave, which is capable of preventing a target sensing performance from being deteriorated by a reflected wave reflected within the radar device, while having a cover structure that is capable of protecting an antenna from the outside.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: July 21, 2020
    Assignee: MANDO CORPORATION
    Inventor: Hyeon Dong Cho
  • Patent number: 10698515
    Abstract: A touch display device for simplifying a signal transmission pattern and a circuit structure is disclosed. A timing controller supplies display information to a touch and data driver through a data transmission line during a data writing period and supplies touch voltage information to the touch and data driver through the data transmission line during a touch driving period.
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: June 30, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Soon-Dong Cho, Hoon Jang
  • Patent number: 10691242
    Abstract: A touch display device can include a panel including touch electrodes; a touch/data driver to drive data lines and the touch electrodes of the panel, read out capacitance variations in the touch electrodes and output sensing data; a gate driver to drive gate lines of the panel; a timing controller to control display operations of the touch/data driver and the gate driver; a microcontroller unit (MCU) to control touch driving and sensing operations of the touch/data driver; a first power circuit to drive the timing controller and the gate driver using a main voltage supplied through a first power line; a multiplexer to output one of a universal serial bus (USB) voltage supplied through a second power line and the main voltage supplied through the first power line; a second power circuit configured to drive the touch/data driver, the gate driver and the MCU based on an output voltage from an output of the multiplexer; and a switch connected between the output of the multiplexer and the second power line, the sw
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: June 23, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Hoon Jang, Soon-Dong Cho, Won-Yong Jang
  • Publication number: 20200194719
    Abstract: A flexible substrate includes a first flexible thin film including a first region and a second region surrounding the first region; a second flexible thin film on the first thin film and in the first and second regions; and an intermediate blocking layer between the first and second thin films and in the first region.
    Type: Application
    Filed: December 3, 2019
    Publication date: June 18, 2020
    Applicant: LG Display Co., Ltd.
    Inventors: Nack-Bong Choi, Byung-Su Ahn, Yoon-Dong Cho
  • Publication number: 20200110155
    Abstract: According to a radar system according to these embodiments, by mounting a radar antenna, an RF device, and a controller on an upper face and a lower face of a circuit board, the size and the cost can be reduced by decreasing the number of constituent components, and the reliability and the durability can be improved by discharging heat generated in the circuit board to the outside.
    Type: Application
    Filed: October 8, 2019
    Publication date: April 9, 2020
    Inventors: Hyeon Dong CHO, HanYeol YU, Jong Gyu PARK, Su Han KIM, Woo Young KIM
  • Patent number: 10546807
    Abstract: Disclosed are a chip on film (COF) and a display device including the same, for reducing the number of input pads using a pattern branching structure. The COF is connected to gate-in-panel (GIP) output pads using a structure formed via branching of GIP wirings connected to the GIP input pads in a data driving integrated circuit (IC) or a circuit film to reduce the number of GIP input pads.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: January 28, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Soon-Dong Cho, Hoon Jang, Min-Gyu Park, Won-Yong Jang
  • Publication number: 20190317185
    Abstract: The present disclosure relates to a radar system and a transmission apparatus therefor, including a signal generator for generating a first signal; a phase adjuster configured to include a plurality of input ports and at least one output port, to generate a second signal by adjusting the phase of the first signal according to an input port through which the first signal is transmitted among the plurality of input ports, and to output the generated second signal to an antenna unit; and a port selector configured to select at least one of the plurality of input ports of the phase adjuster according to an identification code and to transmit the first signal through the selected input port so that a transmission signal radiated through the antenna unit is phase inverted or formed in a pattern corresponding to the identification code, so that interference by the other radar system can be minimized, and the accuracy, reliability and frequency efficiency of the radar system can be improved.
    Type: Application
    Filed: April 11, 2019
    Publication date: October 17, 2019
    Inventors: Jong Gyu Park, Hyeon Dong Cho, HanYeol Yu
  • Patent number: 10444881
    Abstract: Disclosed are a touch power circuit and a touch display device in which an operational amplifier buffers an input pulse having a first voltage and a higher second voltage alternate, and uses the buffered input pulse to provide an output pulse. The operational amplifier includes a non-inverting input terminal to which the input pulse is supplied, an inverting input terminal connected to the output terminal, and an output unit driven according to a result of amplifying a difference between a voltage of the non-inverting input terminal and a voltage of the inverting input terminal and configured to charge and discharge the output terminal. The circuits and devices may further include an offset voltage applier configured to supply an offset voltage having a first polarity to the non-inverting input terminal and/or the inverting input terminal to level-shift the input pulse.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: October 15, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Hoon Jang, Soon-Dong Cho, Juno Hur, Dong-Ju Kim, Won-Yong Jang
  • Publication number: 20190197964
    Abstract: A display device can include a gate driver configured to drive gate lines of a panel; a data driver configured to drive data lines of the panel; a timing controller configured to control operations of the gate driver and the data driver; and a level shifter integrated circuit (IC) configured to receive a plurality of control signals from the timing controller, and generate and output a plurality gate control signals for controlling driving of the gate driver, in which the plurality of control signals include an on clock and an off clock, and the level shifter IC stores the on clock and the off clock in buffers based on one or more control signals from the timing controller, generates a plurality of scan clocks by logically processing the on clock and the off clock, and outputs the plurality of scan clocks to the gate driver.
    Type: Application
    Filed: December 19, 2018
    Publication date: June 27, 2019
    Applicant: LG Display Co., Ltd.
    Inventors: Soon-Dong CHO, Jung-Jae KIM, Sang-Uk LEE, Hyung-Jin CHOE
  • Publication number: 20190189058
    Abstract: A chip on film and a display device including the same selectively outputs gate transmission signals and data outputs to reduce the number of output pads in a data driving IC. The COF includes first to third groups of data input pads, gate input pads, and output pads. A data driving IC includes first to third groups of output buffers, a first switchable output unit configured to selectively supply gate transmission signals and an output of the first group of output buffers to the first group of output pads, and a second switchable output unit configured to selectively supply the gate transmission signals and an output of the third group of output buffers to the third group of output pads. An output of the second group of output buffers is supplied to the second group of output pads between the first and the third groups of output pads.
    Type: Application
    Filed: December 7, 2018
    Publication date: June 20, 2019
    Inventors: Soon-Dong CHO, Jae-Won HAN, Jun-O HUR, Dong-Ju KIM