Patents by Inventor Ji Su Na

Ji Su Na 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: 20220093043
    Abstract: Provided are a display device. The display device comprises: a display unit defined by a display area and a non-display area located outside the display area, and including pixels arranged in the display area, first sensing wirings electrically connected to the pixels, and auxiliary voltage wirings electrically separated from the pixels; and a sensing unit electrically connected to the first sensing wirings, wherein the first sensing wirings and the auxiliary voltage wirings extend in a first direction and are sequentially arranged along a second direction perpendicular to the first direction at first intervals, the first sensing wirings are spaced apart from each other along the second direction at second intervals greater than the first intervals and are electrically separated from each other, and the auxiliary voltage wirings are electrically connected to each other.
    Type: Application
    Filed: December 3, 2021
    Publication date: March 24, 2022
    Inventors: Ki Wook KIM, Kwang Min KIM, Yang Wan KIM, Ji Su NA, Min Woo BYUN
  • Publication number: 20220076620
    Abstract: An organic light emitting diode (“OLED”) display includes a semiconductor layer on a substrate, first and second signal lines on the semiconductor layer, a shield layer on the first and second signal lines, a data line on the shield layer, and an OLED on the data line, where the transistor includes a driving transistor, a second transistor connected to the first signal line and the data line, and a third transistor including a gate electrode connected to the first signal line, a third electrode connected to a second electrode of the driving transistor, and a fourth electrode connected to a gate electrode of the driving transistor, the shield layer includes an overlapped portion overlapping at least a part of the connection portion and non-overlaps the second transistor, and the shield layer is separated from the first and second signal lines with a gap therebetween in a plan view.
    Type: Application
    Filed: November 12, 2021
    Publication date: March 10, 2022
    Inventors: Ji Su NA, Joong-Soo MOON, Chae Han HYUN, Yang Wan KIM
  • Publication number: 20220059641
    Abstract: A display device includes a display area including sub-pixels for displaying an image, a non-display area adjacent to the display area, and a first driving voltage line disposed in the non-display area and including at least one straight portion defining a plurality of first straight holes and a bent portion defining a plurality of first bent holes. The first driving voltage line is disposed linearly in the straight portion, and is bent in the bent portion. The first bent hole and the first straight hole have different sizes from each other in a plan view. The first bent hole and the first straight hole is adjacent to each other in a longitudinal direction of the first driving voltage line.
    Type: Application
    Filed: August 13, 2021
    Publication date: February 24, 2022
    Inventor: Ji Su NA
  • Publication number: 20220045158
    Abstract: Provided is a display device which comprises a substrate, a plurality of pixels disposed on the substrate, a first initialization voltage line disposed on the substrate along a first direction, and a second initialization voltage line disposed on a different layer from the first initialization voltage line, wherein the second initialization voltage line may include a horizontal portion disposed along the first direction and a vertical portion disposed along a second direction crossing the first direction, and the vertical portion may be disposed between a plurality of pixels adjacent to each other in the first direction.
    Type: Application
    Filed: May 20, 2021
    Publication date: February 10, 2022
    Inventors: Ji Su NA, Won Kyu KWAK, Yang Wan KIM, Young Jin CHO
  • Patent number: 11205374
    Abstract: A stage in an emission control driver of a display device includes an input unit to control a voltage of a first node and a second node in response to a first input signal supplied from a first input terminal and a second input signal supplied from a second input terminal, respectively; a first controller to control a voltage of a third node and a fourth node in response to a third input signal supplied from a third input terminal and the voltage of the second node; a second controller to control the voltage of the fourth node in response to the voltage of the first node; and an output unit to supply a voltage of a first power supply or a second power supply to an output terminal in response to the voltage of the third node or the voltage of the fourth node.
    Type: Grant
    Filed: June 4, 2020
    Date of Patent: December 21, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ji Su Na, Yang Wan Kim, Joong Soo Moon, Young Jin Cho
  • Patent number: 11195462
    Abstract: Provided are a display device. The display device comprises: a display unit defined by a display area and a non-display area located outside the display area, and including pixels arranged in the display area, first sensing wirings electrically connected to the pixels, and auxiliary voltage wirings electrically separated from the pixels; and a sensing unit electrically connected to the first sensing wirings, wherein the first sensing wirings and the auxiliary voltage wirings extend in a first direction and are sequentially arranged along a second direction perpendicular to the first direction at first intervals, the first sensing wirings are spaced apart from each other along the second direction at second intervals greater than the first intervals and are electrically separated from each other, and the auxiliary voltage wirings are electrically connected to each other.
    Type: Grant
    Filed: February 24, 2021
    Date of Patent: December 7, 2021
    Inventors: Ki Wook Kim, Kwang Min Kim, Yang Wan Kim, Ji Su Na, Min Woo Byun
  • Publication number: 20210376042
    Abstract: In a display device including a notch portion of a non-emission region, the display device includes: a plurality of pixels; a plurality of scan lines connected to the plurality of pixels; and a load adjusting portion connected to the scan lines on both sides of the notch portion and adjacent to an upper end portion of the notch portion, wherein the load adjusting portion includes: a load adjusting wiring connected to the scan lines on both sides of the notch portion; a first load adjusting electrode in a different layer from the load adjusting wiring and overlapping the load adjusting wiring; and a second load adjusting electrode in a different layer from the load adjusting wiring and the first load adjusting electrode and overlapping the load adjusting wiring.
    Type: Application
    Filed: February 10, 2021
    Publication date: December 2, 2021
    Inventors: Young Jin CHO, Ji Su NA, Joong-Soo MOON
  • Patent number: 11176883
    Abstract: An organic light emitting diode (“OLED”) display includes a semiconductor layer on a substrate, first and second signal lines on the semiconductor layer, a shield layer on the first and second signal lines, a data line on the shield layer, and an OLED on the data line, where the transistor includes a driving transistor, a second transistor connected to the first signal line and the data line, and a third transistor including a gate electrode connected to the first signal line, a third electrode connected to a second electrode of the driving transistor, and a fourth electrode connected to a gate electrode of the driving transistor, the shield layer includes an overlapped portion overlapping at least a part of the connection portion and non-overlaps the second transistor, and the shield layer is separated from the first and second signal lines with a gap therebetween in a plan view.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: November 16, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ji Su Na, Joong-Soo Moon, Chae Han Hyun, Yang Wan Kim
  • Patent number: 11164518
    Abstract: A display device includes a light emitting element. A first transistor transmits a driving current to the light emitting element. A second transistor is connected to a first electrode of the first transistor to transmit a data signal. A third transistor has a first electrode connected to a second electrode of the first transistor. An auxiliary transistor is connected between a second electrode of the third transistor and a gate electrode of the first transistor to transmit the data signal to the gate electrode of the first transistor. Each of the first transistor, the second transistor and the auxiliary transistor is a first-type transistor, and the third transistor is a second-type transistor different from the first-type transistor.
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: November 2, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ji Su Na, Min Woo Byun, Seung Kyu Lee
  • Publication number: 20210335268
    Abstract: An organic light emitting diode (OLED) display includes: a display area comprising a plurality of pixel rows configured to emit light in response to a light emission signal; a light emission signal generator at the periphery of the display area, and including a plurality of light emission signal stages connected to the plurality of pixel rows; and a first high voltage transmission line and a second high voltage transmission line connected to the light emission signal generator, wherein the first high voltage transmission line is connected to a plurality of odd-numbered light emission signal stages among the plurality of light emission signal stages, and the second high voltage transmission line is connected to a plurality of even-numbered light emission signal stages among the plurality of light emission signal stages.
    Type: Application
    Filed: January 8, 2021
    Publication date: October 28, 2021
    Inventors: Min Woo BYUN, Ji Su NA, Jong Won PARK, Yang Wan KIM
  • Publication number: 20210319752
    Abstract: A display device includes a light emitting element. A first transistor transmits a driving current to the light emitting element. A second transistor is connected to a first electrode of the first transistor to transmit a data signal. A third transistor has a first electrode connected to a second electrode of the first transistor. An auxiliary transistor is connected between a second electrode of the third transistor and a gate electrode of the first transistor to transmit the data signal to the gate electrode of the first transistor. Each of the first transistor, the second transistor and the auxiliary transistor is a first-type transistor, and the third transistor is a second-type transistor different from the first-type transistor.
    Type: Application
    Filed: June 22, 2021
    Publication date: October 14, 2021
    Inventors: Ji Su NA, Min Woo BYUN, Seung Kyu LEE
  • Publication number: 20210225282
    Abstract: A display device includes a plurality of pixels. A pixel includes an organic light emitting diode and a pixel circuit including a first transistor that includes a gate electrode connected with a first node, a first electrode connected with a second node, and a second electrode connected with a third node; a second transistor that includes a gate electrode connected with a first gate line, a first electrode connected with a data line, and a second electrode connected with the second node; a third transistor that includes a gate electrode connected with a third gate line, a first electrode connected with the third node, and a second electrode connected with the first node; and a fourth transistor that includes a gate electrode connected with a second gate line, a first electrode connected with the third gate line, and a second electrode connected with the first node.
    Type: Application
    Filed: December 16, 2020
    Publication date: July 22, 2021
    Inventors: Young Jin Cho, Ji Su Na, Yang Wan Kim
  • Publication number: 20210201785
    Abstract: Provided are a display device. The display device comprises: a display unit defined by a display area and a non-display area located outside the display area, and including pixels arranged in the display area, first sensing wirings electrically connected to the pixels, and auxiliary voltage wirings electrically separated from the pixels; and a sensing unit electrically connected to the first sensing wirings, wherein the first sensing wirings and the auxiliary voltage wirings extend in a first direction and are sequentially arranged along a second direction perpendicular to the first direction at first intervals, the first sensing wirings are spaced apart from each other along the second direction at second intervals greater than the first intervals and are electrically separated from each other, and the auxiliary voltage wirings are electrically connected to each other.
    Type: Application
    Filed: February 24, 2021
    Publication date: July 1, 2021
    Inventors: Ki Wook KIM, Kwang Min KIM, Yang Wan KIM, Ji Su NA, Min Woo BYUN
  • Publication number: 20210193040
    Abstract: An emission driver includes stages outputting an emission control signal. At least one of the stages includes an input circuit controlling voltages of a first node and a second node, an output circuit supplying a voltage of first power or a voltage of second power to an output terminal as the emission control signal in response to a voltage of a third node and a voltage of a fourth node, a first signal processor controlling the voltage of the fourth node, a second signal processor controlling the voltage of the fourth node, and a third signal processor controlling the voltage of the third node electrically connected to the first node in response to signals supplied to the second input terminal and the third input terminal and the voltage of the first node.
    Type: Application
    Filed: August 14, 2020
    Publication date: June 24, 2021
    Inventor: Ji Su NA
  • Publication number: 20210125557
    Abstract: A display device includes a display panel for driving a plurality of pixels. Each of the plurality of pixels includes: a light-emitting element; a driving transistor for controlling a driving current flowing through the light-emitting element; a first transistor for selectively applying a data voltage to a first node, a second transistor for receiving an emission signal from an emission control line to selectively apply a driving voltage to the first node; and a first capacitor connected between the first node and the emission control line. The first node is a source electrode of the driving transistor.
    Type: Application
    Filed: October 22, 2020
    Publication date: April 29, 2021
    Inventor: Ji Su NA
  • Publication number: 20210111239
    Abstract: A display device includes a signal line extending in a first direction, a first transistor configured to control a driving current, a light-emitting element electrically coupled to a second electrode of the first transistor, a second transistor electrically coupled to a first electrode of the first transistor and configured to transfer a data voltage, a first scan line electrically coupled to a gate electrode of the second transistor and extending in the first direction, a third transistor including a first electrode electrically coupled to the second electrode of the first transistor and a second electrode electrically coupled to a gate electrode of the first transistor and a second scan line electrically coupled to a gate electrode of the third transistor and extending in the first direction, wherein the second scan line overlaps one selected from among the signal line and the first scan line.
    Type: Application
    Filed: June 30, 2020
    Publication date: April 15, 2021
    Inventors: Young Jin CHO, Ji Su NA, Joong Soo MOON, Yang Wan KIM, Chang Kyu JIN
  • Patent number: 10950174
    Abstract: Provided are a display device. The display device comprises: a display unit defined by a display area and a non-display area located outside the display area, and including pixels arranged in the display area, first sensing wirings electrically connected to the pixels, and auxiliary voltage wirings electrically separated from the pixels; and a sensing unit electrically connected to the first sensing wirings, wherein the first sensing wirings and the auxiliary voltage wirings extend in a first direction and are sequentially arranged along a second direction perpendicular to the first direction at first intervals, the first sensing wirings are spaced apart from each other along the second direction at second intervals greater than the first intervals and are electrically separated from each other, and the auxiliary voltage wirings are electrically connected to each other.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: March 16, 2021
    Inventors: Ki Wook Kim, Kwang Min Kim, Yang Wan Kim, Ji Su Na, Min Woo Byun
  • Patent number: 10872562
    Abstract: A pixel includes an OLED, a driving transistor, first to third transistors, and a first capacitor. The driving transistor controls an amount of current supplied from a first power source to the OLED. The first power source is coupled to a first electrode of the driving transistor. The current corresponds to a voltage of a first node. The first transistor is coupled between a data line and a second node. The first capacitor is coupled between the first node and the second node. The second transistor is coupled between the first node and a second electrode of the driving transistor. The third transistor is coupled between the first node and an initialization power source. A turn-on time of the first and second transistors overlaps that of the third transistor.
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: December 22, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Ji Su Na
  • Publication number: 20200394952
    Abstract: A stage in an emission control driver of a display device includes an input unit to control a voltage of a first node and a second node in response to a first input signal supplied from a first input terminal and a second input signal supplied from a second input terminal, respectively; a first controller to control a voltage of a third node and a fourth node in response to a third input signal supplied from a third input terminal and the voltage of the second node; a second controller to control the voltage of the fourth node in response to the voltage of the first node; and an output unit to supply a voltage of a first power supply or a second power supply to an output terminal in response to the voltage of the third node or the voltage of the fourth node.
    Type: Application
    Filed: June 4, 2020
    Publication date: December 17, 2020
    Inventors: Ji Su NA, Yang Wan Kim, Joong Soo Moon, Young Jin Cho
  • Patent number: 10777145
    Abstract: A demultiplexer includes: a first transistor connected between a data input line and a first data output line; a second transistor connected between the data input line and a second data output line; and an initializing transistor configured to be simultaneously turned on with the first transistor to transmit an initializing voltage to the second data output line.
    Type: Grant
    Filed: August 1, 2016
    Date of Patent: September 15, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seung Kyu Lee, Ji Su Na