Patents by Inventor Yong Ho Jang

Yong Ho Jang 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: 20210287583
    Abstract: A display device includes: a display panel including pixels; a scan driver which supplies a scan signal to scan lines connected to the pixels and supplies a sensing signal to sensing lines connected to the pixels; a data driver which supplies a data signal corresponding to image data to data lines connected to the pixels; a sensing part which senses a threshold voltage of a first transistor included in each of the pixels through receiving lines connected to the pixels, and corrects the sensed threshold voltage based on a voltage drop corresponding to at least one of an internal resistance of the data lines and an internal resistance of the receiving lines; and a timing controller which generates the image data by changing input image data based on the corrected threshold voltage.
    Type: Application
    Filed: March 9, 2021
    Publication date: September 16, 2021
    Inventors: Yong Jin SHIN, Kyun Ho KIM, Hyoung Wook KIM, Bong Im PARK, Uk Jae JANG
  • Patent number: 11119601
    Abstract: An electronic device is provided. The electronic device includes a display for receiving a touch input, a communication circuit, at least one processor, and a memory. The memory stores instructions executable by the at least one processor to detect whether the electronic device is in communication with an external display device via the communication circuit, transmit data for rendering an extended user interface on the external display device to the external display device via the communication circuit, detect whether the electronic device is connected with an external pointing device via the communication circuit, and, when the external pointing device is not connected to the electronic device, provide at least a portion of the display for use as a pointing device.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: September 14, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jeong Pyo Lee, Young Kyu Seon, Ga Jin Song, Dong Ho Jang, Hyung Sup Byeon, Yong Joon Jeon
  • Patent number: 11114692
    Abstract: The present invention relates to a polymer electrolyte for a secondary battery and a lithium secondary battery comprising the same, and particularly, to a polymer electrolyte for a secondary battery, in which mechanical properties, ionic conductivity, and electrical conductivity are improved by comprising a polymer and an electron-acceptor having at least one double bond, as a dopant, and a lithium secondary battery in which electrochemical stability at high temperature and high voltage is enhanced by comprising the polymer electrolyte.
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: September 7, 2021
    Inventors: Sol Ji Park, Kyoung Ho Ahn, Young Jea Kim, Yong Jin Jang, Joong Jin Han, Chul Haeng Lee
  • Patent number: 10810920
    Abstract: A shift register capable of preventing leakage current and a display device using the same are disclosed. The shift register includes a plurality of stages. Each stage includes a set unit setting a Q node in response to a start pulse or previous output, an inverter for controlling a QB node to have a logic state opposite to that of the Q node, an output unit for outputting any one input clock or a gate off voltage in response to the logic states of the Q and QB nodes, a reset unit including a reset switching element, the reset switching element resetting the Q node with a first reset voltage in response to a reset pulse or next output, and a noise cleaner resetting the Q node with a second reset voltage in response to the QB node. When the reset switching element is turned off, the first reset voltage is greater than a voltage of the reset pulse or the next output for the current.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: October 20, 2020
    Assignee: LG Display Co., Ltd.
    Inventor: Yong-Ho Jang
  • Patent number: 10586497
    Abstract: A gate driver includes a plurality of driving units each including a first sub driving unit and a second sub driving unit, wherein output terminals of the first and second sub driving units are connected to first and second sub gate lines, respectively, and first and second sub outputs that are the outputs of the first and second sub driving units are respectively transferred to gate terminals of a first switching transistor and a second switching transistor formed in a pixel area of a display area, and wherein drain and source terminals of the first switching transistor are respectively connected to drain and source terminals of the second switching transistors.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: March 10, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Yong-Ho Jang, Binn Kim, Hae-Yeol Kim, Bu-Yeol Lee
  • Patent number: 10157683
    Abstract: Disclosed is a shift register which prevents current leakage and degradation of an oxide transistor due to light to improve output stability, and a display device using the same. The shift register includes a plurality of stages, and each stage includes a transmission line unit including a plurality of clock lines to supply a plurality of clock signals and a plurality of power lines to supply a plurality of voltages, a transistor unit including a plurality of transistors, and a light-shielding layer overlapping at least one transistor of the transistor unit so as to block light.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: December 18, 2018
    Assignee: LG Display Co., Ltd.
    Inventors: Yong-Ho Jang, Jong-Uk Bae
  • Patent number: 10121406
    Abstract: Disclosed is a shift register which is an embedded shift register using an oxide transistor is capable of improving output performance, operation range and output stability, and a display device using the same. In the shift register, each stage includes at least two light shielding layers individually overlapped with the transistors of the stage by dividing the transistors into at least two regions, and a connection transistor selectively applying a voltage to a first shielding layer overlapped with the pull-up transistor of the two light shielding layers to allow the first light shielding layer to float.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: November 6, 2018
    Assignee: LG DISPLAY CO., LTD.
    Inventor: Yong-Ho Jang
  • Patent number: 10102793
    Abstract: Discussed are a built-in gate driver capable of improving output characteristics of the gate driver by reducing load of clock lines and a display device using the same. The built-in gate driver can include a shift register, a first clock group and a second clock group located in a non-display region of a display panel. The shift register includes a plurality of stages for individually driving gate lines of a display region. The first clock group includes clock lines arranged at a first side of the shift register. The second clock group includes clock lines arranged at a second side of the shift register. Each of the clock lines includes a main line and a branch line branched from the main line and connected to a corresponding stage. A branch line belonging to a corresponding clock group of any one of the first and second clock groups does not overlap a main line belonging to the other clock group.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: October 16, 2018
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Yong-Ho Jang, Woo-Seok Choi
  • Patent number: 10074329
    Abstract: Disclosed is a shift register capable of preventing charges supplied to a Q node to turn on a pull-up transistor for outputting a scan pulse from leaking outwards. The shift register includes a plurality of stages connected to gate lines formed at a panel. Each stage includes a scan signal generator for generating a scan pulse or a turn-off signal, a scan pulse controller for generating a Q-node control signal for generation of the scan pulse, a Q-node adjuster for preventing the Q-node control signal from leaking outwards during supply of the Q-node control signal to a Q-node connected to the scan signal generator, and a turn-off signal controller for transferring a Qb-node control signal for generation of the turn-off signal to the scan signal generator via a Qb-node when no scan pulse is generated from the scan signal generator.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: September 11, 2018
    Assignee: LG Display Co., Ltd.
    Inventors: Yong-Ho Jang, Woo-Seok Choi
  • Patent number: 9571089
    Abstract: A built-in gate driver includes a shift register provided in a non-display area of a panel, and configured to include first to gth stages outputting a scan signal, a clock supply line part configured to include m number of clock supply lines connected to the shift register, and a power supply line part configured to include n number of power supply lines connected to the shift register. At least one of the lines of the clock supply lines and the power supply lines are in a first side direction of the shift register, and the other at least one or more lines of the clock supply lines and the power supply lines are in a second side direction of the shift register.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: February 14, 2017
    Assignee: LG Display Co., Ltd.
    Inventors: Yong Ho Jang, Woo Seok Choi
  • Publication number: 20170032733
    Abstract: Disclosed is a shift register which is an embedded shift register using an oxide transistor is capable of improving output performance, operation range and output stability, and a display device using the same. In the shift register, each stage includes at least two light shielding layers individually overlapped with the transistors of the stage by dividing the transistors into at least two regions, and a connection transistor selectively applying a voltage to a first shielding layer overlapped with the pull-up transistor of the two light shielding layers to allow the first light shielding layer to float.
    Type: Application
    Filed: July 26, 2016
    Publication date: February 2, 2017
    Inventor: Yong-Ho Jang
  • Publication number: 20170004760
    Abstract: Discussed are a built-in gate driver capable of improving output characteristics of the gate driver by reducing load of clock lines and a display device using the same. The built-in gate driver can include a shift register, a first clock group and a second clock group located in a non-display region of a display panel. The shift register includes a plurality of stages for individually driving gate lines of a display region. The first clock group includes clock lines arranged at a first side of the shift register. The second clock group includes clock lines arranged at a second side of the shift register. Each of the clock lines includes a main line and a branch line branched from the main line and connected to a corresponding stage. A branch line belonging to a corresponding clock group of any one of the first and second clock groups does not overlap a main line belonging to the other clock group.
    Type: Application
    Filed: June 17, 2016
    Publication date: January 5, 2017
    Applicant: LG Display Co., Ltd.
    Inventors: Yong-Ho JANG, Woo-Seok CHOI
  • Patent number: 9524797
    Abstract: Disclosed herein is a shift register in which leakage of charges from a voltage at a set node is prevented to stabilize an output from a stage. The shift register includes a plurality of stages for sequentially outputting scan pulses. Each stage includes a node controller for controlling signal states of a set node and a reset node, and an output unit supplied with any one of a plurality of clock pulses having different phases. The output unit outputs the supplied clock pulse as a scan pulse through an output terminal thereof according to the signal states of the set node and reset node. The node controller includes a first discharging switching device which is turned on or off in response to a scan pulse from a downstream stage. The first discharging switching device is connected between any one of a plurality of clock transfer lines and the set node.
    Type: Grant
    Filed: January 20, 2015
    Date of Patent: December 20, 2016
    Assignee: LG Display Co., Ltd.
    Inventors: Yong-Ho Jang, Seung-Chan Choi
  • Publication number: 20160322116
    Abstract: Disclosed is a shift register which prevents current leakage and degradation of an oxide transistor due to light to improve output stability, and a display device using the same. The shift register includes a plurality of stages, and each stage includes a transmission line unit including a plurality of clock lines to supply a plurality of clock signals and a plurality of power lines to supply a plurality of voltages, a transistor unit including a plurality of transistors, and a light-shielding layer overlapping at least one transistor of the transistor unit so as to block light.
    Type: Application
    Filed: April 28, 2016
    Publication date: November 3, 2016
    Inventors: Yong-Ho JANG, Jong-Uk BAE
  • Publication number: 20160253976
    Abstract: Disclosed is a shift register capable of preventing charges supplied to a Q node to turn on a pull-up transistor for outputting a scan pulse from leaking outwards. The shift register includes a plurality of stages connected to gate lines formed at a panel. Each stage includes a scan signal generator for generating a scan pulse or a turn-off signal, a scan pulse controller for generating a Q-node control signal for generation of the scan pulse, a Q-node adjuster for preventing the Q-node control signal from leaking outwards during supply of the Q-node control signal to a Q-node connected to the scan signal generator, and a turn-off signal controller for transferring a Qb-node control signal for generation of the turn-off signal to the scan signal generator via a Qb-node when no scan pulse is generated from the scan signal generator.
    Type: Application
    Filed: August 25, 2015
    Publication date: September 1, 2016
    Inventors: Yong-Ho JANG, Woo-Seok CHOI
  • Patent number: 9384853
    Abstract: A shift register includes a plurality of stages each outputting k composite pulses each including an A-scan pulse and a B-scan pulse. At least one stage includes an A-sub-stage for controlling a voltage at an A-set node and a voltage at at least one A-reset node in response to an external A-control signal and generating an A-carry pulse based on the voltage at the A-set node. The voltage at the at least one A-reset node and any one A-clock pulse, at least one B-sub-stage for controlling a voltage at a B-set node and a voltage at at least one B-reset node in response to an external B-control signal and generating a B-carry pulse, and a scan output controller for generating k A-scan pulses and k B-scan pulses and outputting one of the A-scan pulses and one of the B-scan pulses corresponding to each other as one composite pulse.
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: July 5, 2016
    Assignee: LG Display Co., Ltd.
    Inventor: Yong-Ho Jang
  • Patent number: 9293222
    Abstract: Disclosed is a shift register capable of stably generating an output even when the threadhold voltage of a pull-down switching element is raised due to degradation of the pull-down switching element. The shift register includes a plurality of stages each comprising a node controller comprising an inverter to control a voltage at a reset node in accordance with a voltage at a set node, and an output unit to output a scan pulse based on at least one of the voltage at the set node and the voltage at the reset node. The shift register further includes an inverter voltage controller for controlling a high-level inverter voltage supplied to each inverter of the stages based on the voltage at at least one reset node in at least one of the stages.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: March 22, 2016
    Assignee: LG Display Co., Ltd.
    Inventors: Yong-Ho Jang, Cheol-Se Kim
  • Publication number: 20150317954
    Abstract: A shift register capable of preventing leakage current and a display device using the same are disclosed. The shift register includes a plurality of stages. Each stage includes a set unit setting a Q node in response to a start pulse or previous output, an inverter for controlling a QB node to have a logic state opposite to that of the Q node, an output unit for outputting any one input clock or a gate off voltage in response to the logic states of the Q and QB nodes, a reset unit including a reset switching element, the reset switching element resetting the Q node with a first reset voltage in response to a reset pulse or next output, and a noise cleaner resetting the Q node with a second reset voltage in response to the QB node. When the reset switching element is turned off, the first reset voltage is greater than a voltage of the reset pulse or the next output for the current.
    Type: Application
    Filed: April 30, 2015
    Publication date: November 5, 2015
    Inventor: Yong-Ho JANG
  • Patent number: 9159449
    Abstract: A shift register includes a plurality of stages each for outputting k composite pulses each including an A-scan pulse and a B-scan pulse. At least one stage includes k A-sub-stages each for controlling a voltage at an A-set node and a voltage at least one A-reset node in response to an external A-control signal and generating an A-carry pulse based on the voltage at the A-set node, the voltage at the at least one A-reset node and any one A-clock pulse, a B-sub-stage for controlling a voltage at a B-set node and a voltage at least one B-reset node in response to an external B-control signal and generating a B-carry pulse, and a scan output controller for generating k A-scan pulses and k B-scan pulses and outputting one of the A-scan pulses and one of the B-scan pulses corresponding to each other as one composite pulse.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: October 13, 2015
    Assignee: LG Display Co., Ltd.
    Inventor: Yong-Ho Jang
  • Publication number: 20150162095
    Abstract: Disclosed herein is a shift register in which leakage of charges from a voltage at a set node is prevented to stabilize an output from a stage. The shift register includes a plurality of stages for sequentially outputting scan pulses. Each stage includes a node controller for controlling signal states of a set node and a reset node, and an output unit supplied with any one of a plurality of clock pulses having different phases. The output unit outputs the supplied clock pulse as a scan pulse through an output terminal thereof according to the signal states of the set node and reset node. The node controller includes a first discharging switching device which is turned on or off in response to a scan pulse from a downstream stage. The first discharging switching device is connected between any one of a plurality of clock transfer lines and the set node.
    Type: Application
    Filed: January 20, 2015
    Publication date: June 11, 2015
    Inventors: YONG-HO JANG, SEUNG-CHAN CHOI