Patents by Inventor Oh Kyong Kwon

Oh Kyong Kwon 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: 11942029
    Abstract: A display device includes a pixel. The pixel includes a light-emitting element, a first capacitor, and first to fifth transistors. The first transistor is connected between a first voltage line receiving a first driving voltage and the light-emitting element, and operates in response to a potential of a first node, and the second transistor is connected between a data line and the first node, and receives a first scan signal. The first capacitor is connected between the first node and a second node, and the third transistor is connected between the first transistor and the first node, and receives a second scan signal. The fourth transistor is connected between a reference voltage line and the first node, and receives a third scan signal, and the fifth transistor is connected between the first transistor and the second node, and receives an emission control signal.
    Type: Grant
    Filed: May 30, 2023
    Date of Patent: March 26, 2024
    Assignees: SAMSUNG DISPLAY CO., LTD., IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)
    Inventors: Byungchang Yu, Oh-Kyong Kwon, Kyunghoon Chung
  • Publication number: 20240038145
    Abstract: A display device includes a pixel. The pixel includes a light-emitting element, a first capacitor, and first to fifth transistors. The first transistor is connected between a first voltage line receiving a first driving voltage and the light-emitting element, and operates in response to a potential of a first node, and the second transistor is connected between a data line and the first node, and receives a first scan signal. The first capacitor is connected between the first node and a second node, and the third transistor is connected between the first transistor and the first node, and receives a second scan signal. The fourth transistor is connected between a reference voltage line and the first node, and receives a third scan signal, and the fifth transistor is connected between the first transistor and the second node, and receives an emission control signal.
    Type: Application
    Filed: May 30, 2023
    Publication date: February 1, 2024
    Inventors: BYUNGCHANG YU, Oh-Kyong KWON, KYUNGHOON CHUNG
  • Publication number: 20240021144
    Abstract: A display device includes: a pixel including a light emitting element, a first capacitor connected between a first node and a second node, and a second capacitor connected between the second node and a third node. The pixel further includes: a first transistor connected between the second node and the light emitting element to operate depending on potential of the first node; a second transistor connected between the third node and a data line to operate depending on a first scan signal; a third transistor connected between the third node and the second transistor to operate depending on a light emitting control signal; a fourth transistor connected between a reference voltage line and a first node to operate depending on the second scan signal; and a fifth transistor connected between the reference voltage line and the third node to operate depending on a third scan signal.
    Type: Application
    Filed: April 25, 2023
    Publication date: January 18, 2024
    Inventors: BYUNGCHANG YU, Oh-Kyong KWON, KYUNGHOON CHUNG
  • Publication number: 20230230546
    Abstract: A display apparatus includes a plurality of pixels. A pixel includes a first capacitor connected between a first voltage line receiving a first driving signal and a first node, a first transistor comprising a control electrode connected to the first node, a first electrode connected to a second voltage line receiving a first power source signal and a second electrode connected to a second node, an organic light emitting diode comprising an anode electrode connected to the second node and a cathode electrode receiving a second power source signal, a second capacitor connected between an m-th data line and the second node (wherein, ‘m’ is a natural number) and a second transistor comprising a control electrode connected to an n-th scan line (wherein, ‘n’ is a natural number), a first electrode connected to the first node and a second electrode connected to the second node.
    Type: Application
    Filed: March 20, 2023
    Publication date: July 20, 2023
    Inventors: Chong-Chul CHAI, Oh-Kyong KWON, Nack-Hyeon KEUM, Kyong-Hwan OH, Young-Wan SEO, Yong-Koo HER, In-Jae HWANG
  • Patent number: 11640792
    Abstract: A method of driving a display device including a sensing line, a light-emitting element, a capacitor, and a driving transistor, the driving transistor comprising a control terminal that is connected to the capacitor, an input terminal, and an output terminal, the method including: connecting the control terminal and the output terminal; connecting the control terminal and the output terminal to a ground voltage and then disconnecting the control terminal and the output terminal from the ground voltage; sensing a first voltage of the control terminal through the sensing line; and calculating a threshold voltage of the driving transistor based on the first voltage.
    Type: Grant
    Filed: April 1, 2022
    Date of Patent: May 2, 2023
    Assignees: Samsung Display Co., Ltd., IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)
    Inventors: Ung-Gyu Min, Oh-Kyong Kwon
  • Patent number: 11610547
    Abstract: A display apparatus includes a plurality of pixels. A pixel includes a first capacitor connected between a first voltage line receiving a first driving signal and a first node, a first transistor comprising a control electrode connected to the first node, a first electrode connected to a second voltage line receiving a first power source signal and a second electrode connected to a second node, an organic light emitting diode comprising an anode electrode connected to the second node and a cathode electrode receiving a second power source signal, a second capacitor connected between an m-th data line and the second node (wherein, ‘m’ is a natural number) and a second transistor comprising a control electrode connected to an n-th scan line (wherein, ‘n’ is a natural number), a first electrode connected to the first node and a second electrode connected to the second node.
    Type: Grant
    Filed: September 30, 2021
    Date of Patent: March 21, 2023
    Inventors: Chong-Chul Chai, Oh-Kyong Kwon, Nack-Hyeon Keum, Kyong-Hwan Oh, Young-Wan Seo, Yong-Koo Her, In-Jae Hwang
  • Publication number: 20230005418
    Abstract: A display device is provided including a display panel. A pixel of the display panel includes a light emitting element, first through sixth transistors, and a capacitor. The first transistor is connected between a power line and the light emitting element and operates depending on a potential of a first node. The second transistor is connected between a data line and a second node. The capacitor is connected between the first node and the second node. The third transistor is connected between the first transistor and the first node. The fourth transistor is connected between the first node and a reference voltage line. The fifth transistor is connected between the second node and the reference voltage line. The sixth transistor is connected between the power line and the second node.
    Type: Application
    Filed: May 2, 2022
    Publication date: January 5, 2023
    Inventors: Oh-Kyong KWON, Minjae JEONG, Kyunghoon CHUNG
  • Publication number: 20220415991
    Abstract: A pixel including: a light emitting diode; a first capacitor connected between first and second nodes; a second capacitor connected between the second node and a third node; a first transistor including a first electrode connected to the second node, a second electrode connected to an anode of the light emitting diode, and a gate electrode connected to the first node; a second transistor including a first electrode connected to the third node, a second electrode connected to a reference voltage line, and a gate electrode connected to a first scan line; a third transistor including a first electrode electrically connected to the first node, a second electrode connected to the reference voltage line, and a gate electrode connected to a second scan line; and a fourth transistor including a first electrode connected to a data line, a second electrode connected to the third node, and a gate electrode connected to a third scan line.
    Type: Application
    Filed: May 18, 2022
    Publication date: December 29, 2022
    Inventors: Oh-Kyong KWON, MINJAE JEONG, KYUNGHOON CHUNG
  • Publication number: 20220223108
    Abstract: A method of driving a display device including a sensing line, a light-emitting element, a capacitor, and a driving transistor, the driving transistor comprising a control terminal that is connected to the capacitor, an input terminal, and an output terminal, the method including: connecting the control terminal and the output terminal; connecting the control terminal and the output terminal to a ground voltage and then disconnecting the control terminal and the output terminal from the ground voltage; sensing a first voltage of the control terminal through the sensing line; and calculating a threshold voltage of the driving transistor based on the first voltage.
    Type: Application
    Filed: April 1, 2022
    Publication date: July 14, 2022
    Inventors: Ung-Gyu MIN, Oh-Kyong Kwon
  • Patent number: 11315493
    Abstract: A method of driving a display device including a sensing line, a light-emitting element, a capacitor, and a driving transistor, the driving transistor comprising a control terminal that is connected to the capacitor, an input terminal, and an output terminal, the method including: connecting the control terminal and the output terminal; connecting the control terminal and the output terminal to a ground voltage and then disconnecting the control terminal and the output terminal from the ground voltage; sensing a first voltage of the control terminal through the sensing line; and calculating a threshold voltage of the driving transistor based on the first voltage.
    Type: Grant
    Filed: January 24, 2021
    Date of Patent: April 26, 2022
    Assignees: IUCF-HYU Industry-University Cooperation Foundation Hanyai, Samsung Display Co., Ltd.
    Inventors: Ung-Gyu Min, Oh-Kyong Kwon
  • Patent number: 11289016
    Abstract: Discussed is a display device including a plurality of semiconductor light-emitting devices applied to sub-pixels included in each pixel of a display panel; and a driving unit for driving the plurality of semiconductor light-emitting devices on the basis of a digital pulse width modulation (PWM) signal, wherein the driving unit further includes: a current sensing unit for sensing the value of a current flowing through at least one of the plurality of semiconductor light-emitting devices; and a current compensation unit for compensating for the current deviation between the plurality of semiconductor light-emitting devices on the basis of the current value sensed by the sensing unit.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: March 29, 2022
    Assignees: LG ELECTRONICS INC., INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY
    Inventors: Sunghwan Kim, Seongjin Park, Oh-Kyong Kwon
  • Publication number: 20220020331
    Abstract: A display apparatus includes a plurality of pixels. A pixel includes a first capacitor connected between a first voltage line receiving a first driving signal and a first node, a first transistor comprising a control electrode connected to the first node, a first electrode connected to a second voltage line receiving a first power source signal and a second electrode connected to a second node, an organic light emitting diode comprising an anode electrode connected to the second node and a cathode electrode receiving a second power source signal, a second capacitor connected between an m-th data line and the second node (wherein, ‘m’ is a natural number) and a second transistor comprising a control electrode connected to an n-th scan line (wherein, ‘n’ is a natural number), a first electrode connected to the first node and a second electrode connected to the second node.
    Type: Application
    Filed: September 30, 2021
    Publication date: January 20, 2022
    Inventors: Chong-Chul CHAI, Oh-Kyong KWON, Nack-Hyeon KEUM, Kyong-Hwan OH, Young-Wan SEO, Yong-Koo HER, In-Jae HWANG
  • Patent number: 11183092
    Abstract: Disclosed are a capacitance-type touch panel device and an operation method for the same. In order that the effect of disturbance noise comprised in a receiving signal is minimized, a calculation for a digital code which has been converted into a digital signal type is performed. Information about the noise level of the digital code is compared to a reference value, and, when the frequency of the noise is determined to be similar to the frequency of the receiving signal, the frequency of an operation signal, which is supplied from a signal generation unit, is changed.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: November 23, 2021
    Assignee: Industry-University Cooperation Foundation Hanyang University
    Inventor: Oh-Kyong Kwon
  • Patent number: 11164525
    Abstract: A display apparatus includes a plurality of pixels. A pixel includes a first capacitor connected between a first voltage line receiving a first driving signal and a first node, a first transistor comprising a control electrode connected to the first node, a first electrode connected to a second voltage line receiving a first power source signal and a second electrode connected to a second node, an organic light emitting diode comprising an anode electrode connected to the second node and a cathode electrode receiving a second power source signal, a second capacitor connected between an m-th data line and the second node (wherein, ‘m’ is a natural number) and a second transistor comprising a control electrode connected to an n-th scan line (wherein, ‘n’ is a natural number), a first electrode connected to the first node and a second electrode connected to the second node.
    Type: Grant
    Filed: June 23, 2020
    Date of Patent: November 2, 2021
    Inventors: Chong-Chul Chai, Oh-Kyong Kwon, Nack-Hyeon Keum, Kyong-Hwan Oh, Young-Wan Seo, Yong-Koo Her, In-Jae Hwang
  • Patent number: 11048368
    Abstract: A touch panel where touch/fingerprint recognition electrodes, including sub-pixels, pixels or pixel arrays in a row, share one sensing line is disclosed. The self capacitive touch panel comprises (m×n) sub-pixels, m and n being positive integer, respectively, and a driver configured to drive the sub-pixels. Here, touch/fingerprint recognition electrodes of sub-pixels in a row share one sensing line. Touch point detection and fingerprint recognition may be selectively driven through the touch panel and a readout method.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: June 29, 2021
    Assignee: Industry-University Cooperation Foundation Hanyang University
    Inventor: Oh-Kyong Kwon
  • Publication number: 20210166620
    Abstract: Discussed is a display device including a plurality of semiconductor light-emitting devices applied to sub-pixels included in each pixel of a display panel; and a driving unit for driving the plurality of semiconductor light-emitting devices on the basis of a digital pulse width modulation (PWM) signal, wherein the driving unit further includes: a current sensing unit for sensing the value of a current flowing through at least one of the plurality of semiconductor light-emitting devices; and a current compensation unit for compensating for the current deviation between the plurality of semiconductor light-emitting devices on the basis of the current value sensed by the sensing unit.
    Type: Application
    Filed: October 18, 2018
    Publication date: June 3, 2021
    Applicants: LG ELECTRONICS INC., INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY
    Inventors: Sunghwan KIM, Seongjin PARK, Oh-Kyong KWON
  • Publication number: 20210142730
    Abstract: A method of driving a display device including a sensing line, a light-emitting element, a capacitor, and a driving transistor, the driving transistor comprising a control terminal that is connected to the capacitor, an input terminal, and an output terminal, the method including: connecting the control terminal and the output terminal; connecting the control terminal and the output terminal to a ground voltage and then disconnecting the control terminal and the output terminal from the ground voltage; sensing a first voltage of the control terminal through the sensing line; and calculating a threshold voltage of the driving transistor based on the first voltage.
    Type: Application
    Filed: January 24, 2021
    Publication date: May 13, 2021
    Inventors: Ung-Gyu Min, Oh-Kyong Kwon
  • Patent number: 10969897
    Abstract: In the touch panel device and the operating method for the same according to the present invention, an entire scan is divided into a first scan and a second scan for determining a touch position. In the first scan, a plurality of transmission electrodes are configured into groups, and a signal is applied sequentially or simultaneously such that a first analysis position is determined. In the second scan, since a signal is sequentially or simultaneously applied only to the first analysis position, a plurality of sampling durations can sufficiently be provided such that a second analysis position, which is the exact touch position, can be determined.
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: April 6, 2021
    Assignee: MIRAENANOTECH CO., LTD.
    Inventor: Oh-Kyong Kwon
  • Patent number: 10902784
    Abstract: A method of driving a display device including a sensing line, a light-emitting element, a capacitor, and a driving transistor, the driving transistor comprising a control terminal that is connected to the capacitor, an input terminal, and an output terminal, the method including: connecting the control terminal and the output terminal; connecting the control terminal and the output terminal to a ground voltage and then disconnecting the control terminal and the output terminal from the ground voltage; sensing a first voltage of the control terminal through the sensing line; and calculating a threshold voltage of the driving transistor based on the first voltage.
    Type: Grant
    Filed: October 14, 2019
    Date of Patent: January 26, 2021
    Assignees: Samsung Display Co., Ltd., IUCF-HYU Industry-University Cooperation Foundation Hanyang University
    Inventors: Ung-Gyu Min, Oh-Kyong Kwon
  • Publication number: 20200320936
    Abstract: A display apparatus includes a plurality of pixels. A pixel includes a first capacitor connected between a first voltage line receiving a first driving signal and a first node, a first transistor comprising a control electrode connected to the first node, a first electrode connected to a second voltage line receiving a first power source signal and a second electrode connected to a second node, an organic light emitting diode comprising an anode electrode connected to the second node and a cathode electrode receiving a second power source signal, a second capacitor connected between an m-th data line and the second node (wherein, ‘m’ is a natural number) and a second transistor comprising a control electrode connected to an n-th scan line (wherein, ‘n’ is a natural number), a first electrode connected to the first node and a second electrode connected to the second node.
    Type: Application
    Filed: June 23, 2020
    Publication date: October 8, 2020
    Inventors: Chong-Chul CHAI, Oh-Kyong KWON, Nack-Hyeon KEUM, Kyong-Hwan OH, Young-Wan SEO, Yong-Koo HER, In-Jae HWANG