Patents by Inventor Byung Chang YU

Byung Chang YU 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: 11972726
    Abstract: A light emitting display device includes a light emitting diode including a first electrode and a second electrode to which a driving voltage is applied, a driving transistor, a second transistor receiving a data voltage and connected to a D node, a storage capacitor connected to the driving transistor and an N node, a hold capacitor connected to the D node and the N node, a third transistor connected to the D node and the driving transistor, a fourth transistor receiving a reference voltage and connected to the driving transistor, a fifth transistor connected to the driving transistor and the N node, a sixth transistor receiving a driving low voltage and connected to the driving transistor, a seventh transistor receiving an initialization voltage and connected the driving transistor, and an eighth transistor connected to the driving transistor and the first electrode of the light emitting diode.
    Type: Grant
    Filed: November 21, 2022
    Date of Patent: April 30, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Byung Chang Yu, Hyun Joon Kim, Hae Min Kim, Myunghoon Park, Dong-Hoon Lee
  • Publication number: 20240046870
    Abstract: A light emitting display device includes: a light emitting element including an anode connected to a first line; a first transistor; a second transistor including a first electrode connected to a data line, and a second electrode connected to a gate electrode of the first transistor; a third transistor including a first electrode connected to the first line, and a second electrode connected to a first electrode of the first transistor; a fourth transistor including a second electrode connected to the gate electrode; a sixth transistor including a first electrode connected to a second electrode of the first transistor, and a second electrode connected to a second line; a first capacitor including a first electrode connected to the gate electrode and a second electrode connected to the second electrode of the first transistor; and a second capacitor including a second electrode connected to the second electrode of the first transistor.
    Type: Application
    Filed: July 27, 2023
    Publication date: February 8, 2024
    Inventors: Kyung Hoon CHUNG, Byung Chang YU
  • Patent number: 11893926
    Abstract: Embodiments provide an emissive display device including a driving transistor including a first electrode, a second electrode, and a driving gate electrode, a second transistor including a first electrode electrically connected to a data line, a transfer capacitor including a first transfer electrode electrically connected to a second electrode of the second transistor and a second transfer electrode electrically connected to the driving gate electrode; a fifth transistor electrically connecting the first electrode of the driving transistor and the driving gate electrode; a ninth transistor including a second electrode electrically connected to the second electrode of the driving transistor; and a light emitting diode including an anode and a cathode receiving an output current outputted to the second electrode of the driving transistor.
    Type: Grant
    Filed: February 16, 2023
    Date of Patent: February 6, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Byung Chang Yu, Hae Min Kim, Myunghoon Park, Dong-Hoon Lee, Kyung Hoon Chung
  • Publication number: 20230413608
    Abstract: A light emitting display device includes: a first display area including a first light-emitting element and a first pixel circuit unit; and a second display area including a second light-emitting element disposed to overlap a driving unit and a second pixel circuit unit which drives the second light-emitting element, where the first pixel circuit unit further include a first boost capacitor.
    Type: Application
    Filed: July 31, 2023
    Publication date: December 21, 2023
    Inventors: Hee Rim SONG, Byung Chang YU, Gyung Soon PARK
  • Publication number: 20230377510
    Abstract: Embodiments provide an emissive display device including a driving transistor including a first electrode, a second electrode, and a driving gate electrode, a second transistor including a first electrode electrically connected to a data line, a transfer capacitor including a first transfer electrode electrically connected to a second electrode of the second transistor and a second transfer electrode electrically connected to the driving gate electrode; a fifth transistor electrically connecting the first electrode of the driving transistor and the driving gate electrode; a ninth transistor including a second electrode electrically connected to the second electrode of the driving transistor; and a light emitting diode including an anode and a cathode receiving an output current outputted to the second electrode of the driving transistor.
    Type: Application
    Filed: February 16, 2023
    Publication date: November 23, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: Byung Chang YU, Hae Min KIM, MYUNGHOON PARK, Dong-Hoon LEE, Kyung Hoon CHUNG
  • Patent number: 11790841
    Abstract: A pixel and a display device including the same are disclosed. The pixel includes a light emitting element, first through seventh transistors, and a first capacitor. The first transistor is connected between first and second nodes. The second transistor is connected between a data line and a fourth node and configured to be turned on by a first scan signal. The third transistor is connected between the first node and a third node and configured to be turned on by a second scan signal. The fourth transistor is connected between the fourth node and a third power line and configured to be turned on by a third scan signal. The fifth transistor is connected between the third node and the third power line and configured to be turned on by a fourth scan signal. The sixth transistor is connected between the first node and a fifth node and configured to be turned off by an emission control signal.
    Type: Grant
    Filed: December 1, 2022
    Date of Patent: October 17, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Byung Chang Yu, Hyun Joon Kim, Hae Min Kim, Myung Hoon Park, Dong Hoon Lee
  • Patent number: 11765940
    Abstract: A light emitting display device includes: a first display area including a first light-emitting element and a first pixel circuit unit; and a second display area including a second light-emitting element disposed to overlap a driving unit and a second pixel circuit unit which drives the second light-emitting element, where the first pixel circuit unit further include a first boost capacitor.
    Type: Grant
    Filed: January 31, 2022
    Date of Patent: September 19, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hee Rim Song, Byung Chang Yu, Gyung Soon Park
  • Publication number: 20230196986
    Abstract: A pixel and a display device including the same are disclosed. The pixel includes a light emitting element, first through seventh transistors, and a first capacitor. The first transistor is connected between first and second nodes. The second transistor is connected between a data line and a fourth node and configured to be turned on by a first scan signal. The third transistor is connected between the first node and a third node and configured to be turned on by a second scan signal. The fourth transistor is connected between the fourth node and a third power line and configured to be turned on by a third scan signal. The fifth transistor is connected between the third node and the third power line and configured to be turned on by a fourth scan signal. The sixth transistor is connected between the first node and a fifth node and configured to be turned off by an emission control signal.
    Type: Application
    Filed: December 1, 2022
    Publication date: June 22, 2023
    Inventors: Byung Chang YU, Hyun Joon KIM, Hae Min KIM, Myung Hoon PARK, Dong Hoon LEE
  • Publication number: 20220392985
    Abstract: A light emitting display device includes: a first display area including a first light-emitting element and a first pixel circuit unit; and a second display area including a second light-emitting element disposed to overlap a driving unit and a second pixel circuit unit which drives the second light-emitting element, where the first pixel circuit unit further include a first boost capacitor.
    Type: Application
    Filed: January 31, 2022
    Publication date: December 8, 2022
    Inventors: Hee Rim SONG, Byung Chang YU, Gyung Soon PARK
  • Patent number: 11295673
    Abstract: A display device includes a display panel including a plurality of pixels, a timing controller which generates an emission start signal, an emission driver which supplies an emission control signal to the plurality of pixels based on the emission start signal received from the timing controller, a first scan driver which supplies a first scan signal to the plurality of pixels, a second scan driver which supplies a second scan signal to the plurality of pixels, and a data driver which supplies a data signal to the plurality of pixels. The timing controller adjusts a period in which the emission start signal is supplied based on a change of a driving frequency.
    Type: Grant
    Filed: October 14, 2020
    Date of Patent: April 5, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jun Hyun Park, Bon Yong Koo, Byung Chang Yu, Yu Jin Lee, Kyung Hoon Chung
  • Publication number: 20210256908
    Abstract: A display device includes a display panel including a plurality of pixels, a timing controller which generates an emission start signal, an emission driver which supplies an emission control signal to the plurality of pixels based on the emission start signal received from the timing controller, a first scan driver which supplies a first scan signal to the plurality of pixels, a second scan driver which supplies a second scan signal to the plurality of pixels, and a data driver which supplies a data signal to the plurality of pixels. The timing controller adjusts a period in which the emission start signal is supplied based on a change of a driving frequency.
    Type: Application
    Filed: October 14, 2020
    Publication date: August 19, 2021
    Inventors: Jun Hyun PARK, Bon Yong KOO, Byung Chang YU, Yu Jin LEE, Kyung Hoon CHUNG