Patents by Inventor Cheol-Gon Lee

Cheol-Gon Lee 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: 20240135743
    Abstract: A display device includes a plurality of pixels configured to display light, a plurality of first optical sensors configured to sense the light, a plurality of second optical sensors configured to sense the light, a plurality of first scan lines respectively connected to the plurality of pixels and the plurality of first optical sensors, a plurality of second scan lines respectively connected to the plurality of second optical sensors, a first scan driver configured to output a first scan signal to each of the plurality of first scan lines, and a second scan driver configured to output a second scan signal to each of the plurality of second scan lines.
    Type: Application
    Filed: June 22, 2023
    Publication date: April 25, 2024
    Inventors: Cheol Gon LEE, Hee Rim SONG
  • Publication number: 20240130194
    Abstract: A display device including: a base layer; a circuit layer disposed on the base layer; and an element layer disposed on the circuit layer, the element layer including a light emitting element and a light receiving element, wherein the circuit layer includes: a pixel drive circuit connected to the light emitting element; a sensor drive circuit connected to the light receiving element; a data wire connected to the pixel drive circuit; a readout wire connected to the sensor drive circuit; and a shielding electrode wire overlapping the readout wire on a plane.
    Type: Application
    Filed: July 26, 2023
    Publication date: April 18, 2024
    Inventors: HEERIM SONG, MUKYUNG JEON, CHEOL-GON LEE
  • Publication number: 20240126389
    Abstract: Disclosed is a display device including a plurality of touch sensing groups. Each of the plurality of touch sensing groups includes a plurality of write scan circuits, a plurality of pixels connected to the plurality of write scan circuits, a plurality of sensors connected to the plurality of write scan circuits, a plurality of first switching elements switching connections between the plurality of sensors and the plurality of write scan circuits, a touch sensing circuit connected to touch sensors connected one of the plurality of write scan circuits, and a second switching element switching a connection between the touch sensing circuit and the touch sensors.
    Type: Application
    Filed: August 16, 2023
    Publication date: April 18, 2024
    Applicant: Samsung Display Co., Ltd.
    Inventors: HEERIM SONG, CHEOL-GON LEE, MUKYUNG JEON
  • Publication number: 20240112632
    Abstract: A display device includes a plurality of pixels, each of which includes a light emitting element and a pixel driving circuit and a plurality of sensors, each of which includes a light receiving element and a sensor driving circuit. A sensor driving circuit included in at least one of sensors includes a reset transistor configured to output a reset signal to a first sensing node in response to a reset control signal, an amplification transistor connected to first and second sensing nodes and configured to receive a sensor driving voltage, a first output transistor connected between the second sensing node and a readout line and configured to receive a first output control signal, and a second output transistor connected between the second sensing node and the readout line and configured to receive a second output control signal.
    Type: Application
    Filed: August 16, 2023
    Publication date: April 4, 2024
    Inventors: HEERIM SONG, CHEOL-GON LEE, MUKYUNG JEON
  • Publication number: 20240111381
    Abstract: A display device includes: a pixel including a pixel driving circuit and a light emitting element; a sensor including a sensor driving circuit and a sensing element; a first driver to output a first scan signal to the pixel driving circuit; and a second driver to output a second scan signal to the sensor driving circuit. The first driver is to operate at a first operating frequency, and the second driver is to operate at a second operating frequency or a third operating frequency.
    Type: Application
    Filed: July 28, 2023
    Publication date: April 4, 2024
    Inventors: HEERIM SONG, CHEOL-GON LEE, MUKYUNG JEON
  • Patent number: 11922871
    Abstract: An emissive display device includes a display area which includes a plurality of pixels, and a driver disposed at a side of the display area, where the driver includes at least two emission signal stages disposed in one row, and an input signal line connected to the emission signal stages, and the at least two emission signal stages are connected to the same input signal line.
    Type: Grant
    Filed: July 29, 2021
    Date of Patent: March 5, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hae Min Kim, Min Jae Jeong, Jang Mi Kang, Hyun Joon Kim, Jun Hyun Park, Cheol-Gon Lee
  • Patent number: 11887542
    Abstract: A display includes a light emitting element that emits light, a driving transistor that controls a driving current flowing through the light emitting element, a light sensing element spaced apart from the light emitting element and generating a photocurrent according to external light, a first sensing transistor that controls a sensing current flowing to a readout line according to a voltage of a gate electrode of the first sensing transistor, which is electrically connected to an electrode of the light sensing element, and a shielding electrode disposed around a side of the gate electrode of the first sensing transistor in plan view.
    Type: Grant
    Filed: February 9, 2023
    Date of Patent: January 30, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hee Rim Song, Hee Jean Park, Cheol Gon Lee
  • Publication number: 20230389391
    Abstract: A display device in which an active area and a peripheral area adjacent to the active area are defined includes a base layer, a circuit layer disposed on the base layer, and an element layer disposed on the circuit layer and including a light emitting element and a light receiving element. The circuit layer includes a pixel driving circuit connected to the light emitting element, a sensor driving circuit connected to the light receiving element, a plurality of reset voltage wirings disposed in the active area and that provide a reset voltage to the sensor driving circuit, and a reset voltage reinforcement wiring disposed in the peripheral area, connected to the plurality of reset voltage wirings, and extending in a first direction.
    Type: Application
    Filed: March 1, 2023
    Publication date: November 30, 2023
    Inventors: HEERIM SONG, HEEJEAN PARK, CHEOL-GON LEE, MUKYUNG JEON
  • Publication number: 20230368566
    Abstract: A display device includes a base layer and a pixel layer that is disposed on the base layer and that includes a plurality of reference pixel units and a plurality of sensors. Each of the plurality of reference pixel units includes a first light emitting element, a second light emitting element, and a third light emitting element. Each of the plurality of sensors includes a light sensing element disposed between two second light emitting elements adjacent to each other in a first direction and disposed between the first and third light emitting elements in a second direction intersecting the first direction. The second light emitting element has a different shape from the first and third light emitting elements, and the light sensing element has a different shape from the first and third light emitting elements.
    Type: Application
    Filed: February 27, 2023
    Publication date: November 16, 2023
    Applicant: Samsung Display Co., Ltd.
    Inventors: HEERIM SONG, HEEJEAN PARK, YUJIN LEE, CHEOL-GON LEE, MUKYUNG JEON
  • Publication number: 20230363239
    Abstract: A display device includes a light emitting element, a pixel circuit disposed below the light emitting element and electrically connected to the light emitting element, a first light receiving element disposed adjacent to the light emitting element, a sensing circuit disposed below the first light receiving element and electrically connected to the first light receiving element, a second light receiving element spaced apart from the first light receiving element and electrically connected to the sensing circuit and adjacent to the light emitting element, and a dummy circuit pattern disposed below the second light receiving element.
    Type: Application
    Filed: March 1, 2023
    Publication date: November 9, 2023
    Inventors: Heerim SONG, Heejean PARK, Yujin LEE, Cheol-Gon LEE
  • Publication number: 20230351962
    Abstract: A display includes a light emitting element that emits light, a driving transistor that controls a driving current flowing through the light emitting element, a light sensing element spaced apart from the light emitting element and generating a photocurrent according to external light, a first sensing transistor that controls a sensing current flowing to a readout line according to a voltage of a gate electrode of the first sensing transistor, which is electrically connected to an electrode of the light sensing element, and a shielding electrode disposed around a side of the gate electrode of the first sensing transistor in plan view.
    Type: Application
    Filed: February 9, 2023
    Publication date: November 2, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: Hee Rim SONG, Hee Jean PARK, Cheol Gon LEE
  • Publication number: 20230343289
    Abstract: A display device includes display pixels each including a light emitting part including a light emitting element and a pixel driver applying a driving current to the light emitting element, and light sensing pixels each including a light sensing part including an optical element and a sensing driver, the sensing driver applying a sensing current to a sensing line according to a photocurrent of the optical element. The sensing driver includes a first sensing transistor controlling the sensing current flowing through the sensing line according to a voltage of a first electrode of the optical element, and a second sensing transistor initializing the first electrode of the optical element to a first level voltage. A channel layer of the first sensing transistor and a channel layer of the second sensing transistor are made of different materials.
    Type: Application
    Filed: February 13, 2023
    Publication date: October 26, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: Hee Rim SONG, Hee Jean PARK, Yu Jin LEE, Cheol Gon LEE, Mu Kyung JEON
  • Publication number: 20230343277
    Abstract: A display device includes: pixel circuits arranged in a first direction on each of a first pixel row and a second pixel row; dummy sensor circuits arranged in a predetermined interval between the pixel circuits on the first pixel row; sensor circuits arranged in the interval between the pixel circuits on the second pixel row; light emitting elements disposed on the pixel circuits and connected to each of the pixel circuits; first light receiving elements on at least some of the pixel circuits of the first pixel row and the dummy sensor circuits; and second light receiving elements on at least some of the pixel circuits of the second pixel row and the sensor circuits. One of the sensor circuits is connected to at least two of the first light receiving elements and at least two of the second light receiving elements.
    Type: Application
    Filed: July 3, 2023
    Publication date: October 26, 2023
    Inventors: Cheol Gon LEE, Hee Jean PARK, Hee Rim SONG, Yu Jin LEE, Mu Kyung JEON
  • Publication number: 20230343290
    Abstract: A display device includes a light-emitting element for emitting light, a light-sensing element for converting light into an electrical signal, and spaced apart from the light-emitting element, pixel drivers connected to the light-emitting element in a first row and a second row, a first sensing driver between respective ones of the pixel drivers neighboring each other in the first row and connected to the light-sensing element, a second sensing driver between respective ones of the pixel drivers neighboring each other in the second row, connected to the light-sensing element, and not neighboring the first sensing driver in a second direction, a first scan line extending along a first direction crossing the second direction, and connected to the first sensing driver, and a second scan line extending along the first direction, alternately arranged with the first scan line along the second direction, and connected to the second sensing driver.
    Type: Application
    Filed: January 24, 2023
    Publication date: October 26, 2023
    Inventors: Yu Jin LEE, Hee Jean PARK, Hee Rim SONG, Cheol Gon LEE, Mu Kyung JEON
  • Publication number: 20230326233
    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: Application
    Filed: January 17, 2023
    Publication date: October 12, 2023
    Inventors: HEERIM SONG, HEEJEAN PARK, YUJIN LEE, CHEOL-GON LEE, MUKYUNG JEON
  • Publication number: 20230326404
    Abstract: A display device includes: a base layer; a plurality of scan lines configured to sequentially receive scan signals, the plurality of scan lines being on the base layer; a plurality of pixels on the base layer and connected to each of the plurality of scan lines; a plurality of sensing control lines configured to simultaneously receive sensing control signals, the sensing control lines being on the base layer; and a plurality of sensors on the base layer and connected to respective ones of the sensing control lines, wherein the scan line and the sensing control line are on the same layer.
    Type: Application
    Filed: January 27, 2023
    Publication date: October 12, 2023
    Inventors: HEEJEAN PARK, HEERIM SONG, YUJIN LEE, CHEOL-GON LEE, MUKYUNG JEON
  • Publication number: 20230326408
    Abstract: An organic light emitting display device includes a plurality of pixels. Each of the pixels includes an organic light emitting diode, first to third transistors, a storage capacitor, and a first capacitor. The second transistor includes a gate electrode receiving a first scan signal, a first electrode receiving a data signal, and a second electrode connected to a first electrode of the first transistor. The third transistor includes a gate electrode receiving a second scan signal, a first electrode connected to a second electrode of the first transistor, and a second electrode connected to a gate electrode of the first transistor. The storage capacitor includes a first electrode receiving a power voltage and a second electrode connected to the gate electrode of the first transistor. The first capacitor includes a first electrode connected to the gate electrode of the third transistor and a second electrode receiving the power voltage.
    Type: Application
    Filed: June 14, 2023
    Publication date: October 12, 2023
    Inventors: DONGWOO KIM, SUNGHWAN KIM, KYOUNGJU SHIN, CHEOL-GON LEE, SANG-UK LIM
  • Publication number: 20230320155
    Abstract: A display panel includes a first display area and a second display area. The display panel includes a plurality of first pixel groups in the first display area, a plurality of second pixel groups in the second display area, and a plurality of scan lines connected to the first and second pixel groups. The second display area includes a plurality of light emitting areas in which the second pixel groups are respectively disposed, and a plurality of open areas in which the second pixel groups are not disposed. One of a second pixel group of an n-th row is cut and does not overlap an adjacent open area of the n-th row, and is connected in the second display area to a scan line of a second pixel group of an (n?1)-th row or a scan line of a second pixel group of an (n+1)-th row.
    Type: Application
    Filed: June 7, 2023
    Publication date: October 5, 2023
    Inventors: Hyeongseok KIM, Youngwan SEO, Junhyun PARK, YUJIN LEE, Cheol-Gon LEE
  • Publication number: 20230320161
    Abstract: A display device includes a base layer, and a pixel layer including a reference pixel unit and sensor. The reference pixel unit includes first and second light emitting elements emitting a first color light. The sensor includes a light detection element disposed corresponding to the reference pixel unit, and a sensor driving circuit electrically connected to the light detection element. Each of the first and second light emitting elements includes an anode electrode, and a light emitting layer. The light emitting layer of the first light emitting element has the same size as the light emitting layer of the second light emitting element, and the anode electrode of the first light emitting element has a size that is different from that of the anode electrode of the second light emitting element.
    Type: Application
    Filed: February 21, 2023
    Publication date: October 5, 2023
    Inventors: CHEOL-GON LEE, Heejean PARK, Heerim SONG, Yujin LEE, Mukyung JEON
  • Publication number: 20230315224
    Abstract: A display device includes a substrate; a plurality of light emitting units disposed on the substrate; a plurality of light sensing units disposed on the substrate; a pixel defining layer partitioning the plurality of light emitting units and the plurality of light sensing units; and a touch electrode disposed on the pixel defining layer. A shape of a mesh hole defined by the touch electrode and in which the plurality of light sensing units are disposed is defined by the touch electrode, and is different from a shape of a mesh hole in which a first light emitting unit among the plurality of light emitting units is disposed.
    Type: Application
    Filed: January 18, 2023
    Publication date: October 5, 2023
    Inventors: YU JIN LEE, Hee Rim Song, Cheol Gon Lee, Mu Kyung Jeon