Patents by Inventor Heejean PARK

Heejean PARK 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: 12142209
    Abstract: A pixel includes a light emitting element, a driving switching element, an initialization voltage terminal, a data initialization switching element set, and an adjustment switching element. The driving switching element may provide a driving current to the light emitting element. The adjustment switching element is electrically connected to the data initialization switching element in series. At least one of the data initialization switching element set and the adjustment switching element may control an electrical connection between the control electrode of the driving switching element and the initialization voltage terminal. A control electrode of the adjustment switching element is electrically connected to an input electrode of the adjustment switching element.
    Type: Grant
    Filed: January 24, 2022
    Date of Patent: November 12, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Heerim Song, Mukyung Jeon, Heejean Park, Yujin Lee, Cheol-Gon Lee
  • Publication number: 20240365585
    Abstract: A display panel includes a substrate including a corner display area including a strip portion between cut portions; and corner pixels in the strip portion and corner pixel circuits which drives the corner pixels, wherein each of the corner pixels includes a first sub-pixel, a second sub-pixel, and a third sub-pixel, and each of the corner pixel circuits includes a first pixel circuit which drives the first sub-pixel, a second pixel circuit which drives the second sub-pixel, and a third pixel circuit which drives the third sub-pixel, and the first pixel circuit, the second pixel circuit, and the third pixel circuit included in an n-th corner pixel circuit in a first direction that is a lengthwise direction of the strip portion are arranged differently from the first pixel circuit, the second pixel circuit, and the third pixel circuit in an (n+1)-th corner pixel circuit.
    Type: Application
    Filed: July 5, 2024
    Publication date: October 31, 2024
    Inventors: Yujin Lee, Sunhwa Lee, Heejean Park, Jaeyong Jang
  • Publication number: 20240363056
    Abstract: A display panel includes: an element layer including a light emitting element; and a circuit layer including: a first transistor connected between a first drive voltage line and the light emitting element and operating according to a potential of a first node; a second transistor connected between a data line and a second node; a third transistor connected between the first transistor and the first node; a first capacitor electrode connected to the first node; a second capacitor electrode connected to the second node and facing the first capacitor electrode to form a first capacitor; a third capacitor electrode facing the second capacitor electrode to form a second capacitor and connected to the first drive voltage line; a first bridge electrode electrically connecting the first capacitor electrode and the third transistor; and a second bridge electrode electrically connecting the second capacitor electrode and the second transistor.
    Type: Application
    Filed: March 29, 2024
    Publication date: October 31, 2024
    Inventors: HEEJEAN PARK, HYEONGSEOK KIM, JUNHYUN PARK, SUNHWA LEE
  • Publication number: 20240365607
    Abstract: A display device includes: a display panel including a light emitting element and a pixel circuit unit connected to the light emitting element. The pixel circuit unit includes: a first transistor connected between a drive voltage line and the light emitting element and which operates depending on a potential of a first node; a second transistor connected between a data line and a second node; a first capacitor electrode connected to the first node; a second capacitor electrode connected to the second node and which faces the first capacitor electrode; a third capacitor electrode connected to the second node; a fourth capacitor electrode, which faces the third capacitor electrode and is connected to the drive voltage line; a bridge electrode, which connects the second capacitor electrode and the third capacitor electrode; and a shielding electrode, which overlaps the bridge electrode in a plan view.
    Type: Application
    Filed: April 3, 2024
    Publication date: October 31, 2024
    Inventors: JUNHYUN PARK, HYEONGSEOK KIM, HEEJEAN PARK, SUNHWA LEE
  • Publication number: 20240321216
    Abstract: A gate driving circuit is provided. Each stage of the gate driving circuit includes a first node controller configured to control a voltage level of a first node connected to a gate of a pull-down transistor, and a second node controller configured to control a voltage level of a second node connected to a gate of a pull-up transistor, wherein the first node controller comprises a first circuit and a second circuit, wherein the first circuit is connected between the first node and an input terminal to which a start signal is input, and configured to transfer the start signal to the first node, and the second circuit is connected between the input terminal and the first node, and may be configured to boost a voltage level of a voltage of the first node.
    Type: Application
    Filed: March 19, 2024
    Publication date: September 26, 2024
    Inventors: Junhyun Park, Hyeongseok Kim, Heejean Park, Sunhwa Lee, Mukyung Jeon
  • Publication number: 20240321183
    Abstract: A display apparatus includes: a plurality of light-emitting diodes in a display area; a gate driver in a non-display area around the display area, the gate driver including a plurality of stages; a conductive line in the non-display area; an insulating layer on the conductive line; and a connection line on the insulating layer and electrically connecting the conductive line with a transistor of a first stage from among the plurality of stages.
    Type: Application
    Filed: March 19, 2024
    Publication date: September 26, 2024
    Inventors: Junhyun Park, Hyeongseok Kim, Heejean Park, Sunhwa Lee, Mukyung Jeon
  • Publication number: 20240324288
    Abstract: A display apparatus includes a first thin-film transistor in a display area, and including a first semiconductor layer and a first gate electrode, the first semiconductor layer including a silicon semiconductor, a second thin-film transistor on the first thin-film transistor, and including a second semiconductor layer and a second gate electrode, the second semiconductor layer including an oxide semiconductor, a third thin-film transistor on the first thin-film transistor, and including a third semiconductor layer and a third gate electrode, the third semiconductor layer including an oxide semiconductor, a bridge metal layer between the first thin-film transistor and the second thin-film transistor and electrically connected to the first semiconductor layer through a first contact hole, and a first conductive pattern layer on the second gate electrode of the second thin-film transistor, and the bridge metal layer is electrically connected to the first conductive pattern layer through a second contact hole.
    Type: Application
    Filed: February 21, 2024
    Publication date: September 26, 2024
    Applicant: Samsung Display Co., Ltd.
    Inventors: Sunhwa Lee, Junhyun Park, Hyeongseok Kim, Heejean Park, Hanbit Kim
  • Patent number: 12087082
    Abstract: Disclosed is a display device including a base layer and a pixel layer that is disposed on the base layer and that includes a plurality of pixels and a plurality of sensors. Each of the plurality of pixels includes a light emitting element and a pixel drive circuit connected to the light emitting element to control driving of the light emitting element. Each of the plurality of sensors includes a light sensing unit including a plurality of light sensing elements, a sensor drive circuit that is connected to at least two light sensing elements and that outputs a sensing signal in response to light, and a routing wire that electrically connects the at least two light sensing elements to each other.
    Type: Grant
    Filed: January 17, 2023
    Date of Patent: September 10, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Heerim Song, Heejean Park, Yujin Lee, Cheol-Gon Lee, Mukyung Jeon
  • Patent number: 12058890
    Abstract: A display panel includes a substrate including a corner display area including a strip portion between cut portions; and corner pixels in the strip portion and corner pixel circuits which drives the corner pixels, wherein each of the corner pixels includes a first sub-pixel, a second sub-pixel, and a third sub-pixel, and each of the corner pixel circuits includes a first pixel circuit which drives the first sub-pixel, a second pixel circuit which drives the second sub-pixel, and a third pixel circuit which drives the third sub-pixel, and the first pixel circuit, the second pixel circuit, and the third pixel circuit included in an n-th corner pixel circuit in a first direction that is a lengthwise direction of the strip portion are arranged differently from the first pixel circuit, the second pixel circuit, and the third pixel circuit in an (n+1)-th corner pixel circuit.
    Type: Grant
    Filed: December 9, 2021
    Date of Patent: August 6, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yujin Lee, Sunhwa Lee, Heejean Park, Jaeyong Jang
  • Publication number: 20240249685
    Abstract: A display device includes: a pixel driving circuit configured to drive the light emitting elements of pixels; and sensors including a light sensing element and a sensor driving circuit connected with the light sensing element and configured to output a sensing signal corresponding to a light, the sensor driving circuit including: a reset transistor including a first electrode configured to receive a reset signal, a second electrode connected with a first sensing node, and a third electrode configured to receive a reset control signal; an amplification transistor including a first electrode configured to receive a sensing driving voltage, a second electrode connected with a second sensing node, and a third electrode connected with the first sensing node; and an output transistor including a first electrode connected with the second sensing node, a second electrode connected with a sensing line, and a third electrode configured to receive an output control signal.
    Type: Application
    Filed: April 5, 2024
    Publication date: July 25, 2024
    Inventors: HEERIM SONG, HEEJEAN PARK, YUJIN LEE, CHEOL-GON LEE, MUKYUNG JEON
  • Publication number: 20240233624
    Abstract: A display device includes: an active layer on a substrate; a first switching transistor including a part of the active layer; a second switching transistor including a part of the active layer and in a same plane as at least a part of the first switching transistor in a first direction in a plan view; a first capacitor on the active layer and connected to the second switching transistor; a second capacitor on the active layer and connected to the first switching transistor; a first gate line extending in the first direction and connected to a gate electrode of each of the first and second switching transistors; and a light emitting element on the first gate line.
    Type: Application
    Filed: October 20, 2023
    Publication date: July 11, 2024
    Inventors: JUNHYUN PARK, HYEONGSEOK KIM, HEEJEAN PARK, SUNHWA LEE, MUKYUNG JEON
  • Publication number: 20240224597
    Abstract: A display apparatus includes a substrate, a first transistor including a first semiconductor layer on the substrate and a first electrode overlapping the first semiconductor layer, a first capacitor including the first electrode and a second electrode, the second electrode overlapping the first electrode, a second capacitor including the second electrode and a third electrode, the third electrode overlapping the second electrode, a first connection electrode and a second connection electrode disposed on the third electrode, wherein the third electrode includes a first opening, and a portion of the first connection electrode and a portion of the second connection electrode are adjacent to each other, are spaced apart from each other, and overlap the first opening.
    Type: Application
    Filed: December 29, 2023
    Publication date: July 4, 2024
    Applicant: Samsung Display Co., Ltd.
    Inventors: Hyeongseok Kim, Junhyun Park, Heejean Park, Sunhwa Lee, Danwon Lim, Mukyung Jeon
  • Publication number: 20240215363
    Abstract: A display apparatus includes a display area configured to display an image using a pixel, and a peripheral area at least partially surrounding the display area, a pad portion in the peripheral area, and including pads, a first power voltage line between the display area and the pad portion in plan view, and including first power patterns spaced apart from each other, and a fan-out wire portion connected between the pad portion and the display area, and overlapping at least a portion of the first power patterns, wherein the fan-out wire portion includes a first fan-out wire, a second fan-out wire, and a third fan-out wire, the second fan-out wire being at a different layer from the first fan-out wire, and the third fan-out wire being at a different layer from the first fan-out wire and from the second fan-out wire.
    Type: Application
    Filed: September 14, 2023
    Publication date: June 27, 2024
    Inventors: Sunhwa Lee, Heejean Park, Hyeongseok Kim, Junhyun Park
  • Publication number: 20240153460
    Abstract: A display device includes a display area and a peripheral area disposed adjacent to the display area, a display element arranged in the display area, a first semiconductor layer, a gate conductive layer, a first connection electrode layer, and a second connection electrode layer, sequentially arranged on a substrate, and a bias voltage supply line arranged in the peripheral area. The bias voltage supply line includes a top supply line and a bottom supply line arranged on different layers, and the top supply line and the second connection electrode layer are arranged on a same layer.
    Type: Application
    Filed: November 6, 2023
    Publication date: May 9, 2024
    Applicant: Samsung Display Co., LTD.
    Inventors: Junhyun Park, Hyeongseok Kim, Heejean Park, Sunhwa Lee, Mukyung Jeon
  • Publication number: 20240118758
    Abstract: A display device includes: a pixel including a light emitting element; a sensor including a sensing element and a sensor driving circuit; and a sensor driver to output a sensor scan signal to the sensor driving circuit. The sensor driver includes: a switching circuit connected between a first input terminal for receiving a first clock signal of a first operating frequency and a first clock node, and to output a first filtering clock signal of a second operating frequency to the first clock node in response to a first enable signal; and a driving circuit to output the sensor scan signal in response to the first filtering clock signal of the first clock node.
    Type: Application
    Filed: August 7, 2023
    Publication date: April 11, 2024
    Inventors: HEERIM SONG, TAEGYUN KIM, HEEJEAN PARK, YUJIN LEE, CHEOL-GON LEE, MUKYUNG JEON
  • Patent number: 11955078
    Abstract: A display device includes: a pixel driving circuit configured to drive the light emitting elements of pixels; and sensors including a light sensing element and a sensor driving circuit connected with the light sensing element and configured to output a sensing signal corresponding to a light, the sensor driving circuit including: a reset transistor including a first electrode configured to receive a reset signal, a second electrode connected with a first sensing node, and a third electrode configured to receive a reset control signal; an amplification transistor including a first electrode configured to receive a sensing driving voltage, a second electrode connected with a second sensing node, and a third electrode connected with the first sensing node; and an output transistor including a first electrode connected with the second sensing node, a second electrode connected with a sensing line, and a third electrode configured to receive an output control signal.
    Type: Grant
    Filed: August 15, 2022
    Date of Patent: April 9, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Heerim Song, Heejean Park, Yujin Lee, Cheol-Gon Lee, Mukyung Jeon
  • Publication number: 20240065031
    Abstract: A light emitting display device that includes thin film transistors. Material for electrodes of the thin film transistors are chosen to allow for dehydrogenation of the underlying semiconductor pattern while allowing for high frequency driving without delay. Molybdenum is chosen to allow for dehydrogenation, and titanium on aluminum two-layered structure is chosen for low resistance and high-speed driving. The display includes a driving transistor and a switching transistor with a polycrystalline semiconductor layer and a transistor with an oxide semiconductor layer.
    Type: Application
    Filed: May 24, 2023
    Publication date: February 22, 2024
    Applicant: Samsung Display Co., LTD.
    Inventors: Hyeong Seok KIM, Min Jae JEONG, Jun Hyun PARK, HEEJEAN PARK
  • Publication number: 20240057398
    Abstract: The present disclosure relates to a display device, and one or more embodiments provides a display device including a substrate, a transistor above the substrate, a pixel electrode connected to the transistor, an extension electrode connected between the transistor and the pixel electrode, an additional capacitor electrode at a same layer as the extension electrode, overlapping the pixel electrode, and to which a constant voltage is applied, a light-emitting layer above the pixel electrode, and a common electrode above the light-emitting layer.
    Type: Application
    Filed: June 29, 2023
    Publication date: February 15, 2024
    Inventors: Jun Hyun PARK, Hyeong Seok KIM, HEEJEAN PARK, Min Jae JEONG
  • Publication number: 20240038148
    Abstract: A display device includes a substrate, a first active pattern above the substrate, a first gate layer above the first active pattern, and including a first capacitor electrode, a second gate layer above the first gate layer, and including a second capacitor electrode overlapping the first capacitor electrode, a second active pattern above the second gate layer, and including an extension portion above the second capacitor electrode, and a connection electrode above the second active pattern, and connecting the extension portion and the first capacitor electrode.
    Type: Application
    Filed: July 18, 2023
    Publication date: February 1, 2024
    Inventors: JUNHYUN PARK, HYEONGSEOK KIM, HEEJEAN PARK, MINJAE JEONG, MUKYUNG JEON
  • Publication number: 20240023390
    Abstract: A display panel includes a substrate including a first display area, a first side display area, a second side display area, and a corner display area, the corner display area being arranged between the first side display area and the second side display area and surrounding at least a portion of the first display area, a first wiring extending in a first direction in the first display area, a second wiring extending in a second direction in the first display area, a first corner wiring arranged in the corner display area and connected to the first wiring, a second corner wiring arranged in the corner display area and connected to the second wiring, and a pixel circuit arranged in the corner display area, where the first corner wiring and the second corner wiring extend in a first extension direction in the corner display area.
    Type: Application
    Filed: June 15, 2023
    Publication date: January 18, 2024
    Inventors: Yujin LEE, Heejean PARK, Mukyung JEON