Patents by Inventor Hyunhaeng Lee

Hyunhaeng 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).

  • Patent number: 12108630
    Abstract: Embodiments of the present disclosure are related to a display device, as arranging a storage capacitor and an active pattern disposed on a subpixel by using an active layer that a semiconductor layer and a conductive layer are laminated, an area of the storage capacitor can be increased efficiently and methods can be provided to use an area overlapped with a contact-hole located on the active pattern as an area of the storage capacitor. Furthermore, as a location of the contact-hole is adjusted easily, by making the contact-hole not to be disposed on an area adjacent to a driving transistor, a size of the driving transistor can be increased and an aperture ratio of the subpixel can be improved.
    Type: Grant
    Filed: November 30, 2021
    Date of Patent: October 1, 2024
    Assignee: LG DISPLAY CO., LTD.
    Inventors: HyunHaeng Lee, Kiwoong Song
  • Publication number: 20240260354
    Abstract: A display panel and a display device. Specifically, there may be provided a display panel and a display device, capable of preventing a reduction in opening area by at least one active pattern disposed in a portion of at least one emission area among the plurality of emission areas and disposed in a portion of the non-emission area, wherein the active pattern includes at least one cutting line in an area corresponding to the emission area, and wherein the active pattern is electrically connected to one of the plurality of signal lines and is electrically connected to at least one transistor disposed in the on-emission area surrounding the emission area where the active pattern is disposed.
    Type: Application
    Filed: September 14, 2023
    Publication date: August 1, 2024
    Applicant: LG DISPLAY CO., LTD.
    Inventors: EunJi Joo, HyunHaeng Lee, Kiwoong Song, HuSik Yoon
  • Publication number: 20240221621
    Abstract: A light emitting display apparatus includes a first node electrode disposed in a rear surface of a substrate and connected to a gate of a first driving transistor of a first pixel, an first source electrode disposed on the same layer as a gate of the first driving transistor, overlapping the first gate electrode, and connected to a first electrode of a first light emitting device, a first switching transistor connected to a first gate line, and a first sensing transistor connected to a gate of the first switching transistor, wherein the first gate electrode is disposed between the rear surface of the substrate and the first source electrode.
    Type: Application
    Filed: October 13, 2023
    Publication date: July 4, 2024
    Applicant: LG Display Co., Ltd.
    Inventors: Sangmin KIM, HyunHaeng LEE, Yoochul SUNG
  • Publication number: 20240196668
    Abstract: An organic light emitting display apparatus includes a plurality of subpixels in an emission region; and a planarization layer in the plurality of subpixels, the planarization layer including a plurality of light extraction patterns including a convex portion and a plurality of concave portions. At least a first light extraction pattern of the plurality of light extraction patterns is rotated with respect to a center portion of each of the plurality of concave portions.
    Type: Application
    Filed: November 30, 2023
    Publication date: June 13, 2024
    Applicant: LG Display Co., Ltd.
    Inventor: HyunHaeng LEE
  • Publication number: 20240122046
    Abstract: A light emitting display apparatus may include a substrate, a plurality of pixels having a plurality of subpixels on the substrate, a light extraction portion disposed on the substrate and in each of the plurality of subpixels, and a light emitting device layer on the light extraction portion. The light extraction portion may include a plurality of concave portions and a convex portion between the plurality of concave portions. A tilt line passing through a center portion of each of the plurality of concave portions at one or more of the plurality of subpixels may be inclined from a straight line parallel to a length direction of the substrate.
    Type: Application
    Filed: October 5, 2023
    Publication date: April 11, 2024
    Applicant: LG Display Co., Ltd.
    Inventors: HyunHaeng LEE, DuHwan OH
  • Patent number: 11910652
    Abstract: The disclosure relates to an organic light emitting display panel and an organic light emitting display device including the display panel. Specifically, the organic light emitting display panel includes a buffer layer on a first conductive layer, an active layer on or over the buffer layer, a first insulating film on or over the active layer and overlapping a part of an upper surface of the active layer, a second insulating film on or over the first insulating film and including a first contact hole exposing the part of the upper surface of the active layer, an electrode of an organic light emitting element contacting the active layer through the first and second contact holes, wherein an area in which the active layer and a second conductive layer contact is included in a node at which a reference voltage is applied to a driving transistor.
    Type: Grant
    Filed: November 22, 2021
    Date of Patent: February 20, 2024
    Assignee: LG Display Co., Ltd.
    Inventors: Younghee Lee, HyunHaeng Lee
  • Publication number: 20240057401
    Abstract: A disclosed display apparatus may include a substrate having a light emission area, including a pixel, and a non-light emission area in a periphery of the light emission area; a plurality of split lines spaced apart from each other in the non-light emission area, the split lines being configured to provide a signal for driving the pixel; a planarization layer in the non-light emission area and overlapping with a portion of each of the split lines; and a connection electrode covering the planarization layer in the non-light emission area and connecting the split lines to each other. The planarization layer may include a central area and an edge area in a periphery of the central area, the central area having a different thickness from the edge area.
    Type: Application
    Filed: August 2, 2023
    Publication date: February 15, 2024
    Applicant: LG Display Co., Ltd.
    Inventors: HuSik Yoon, HyunHaeng Lee
  • Patent number: 11864429
    Abstract: A display panel of an organic light emitting display device includes a buffer layer disposed on a first conductive layer, and including a first contact hole, an active layer disposed on the buffer layer, and including an active pattern and a conductive pattern disposed on the active pattern, a first insulating film disposed on or over the active layer and the buffer layer, and including a second contact hole overlapping with the first contact hole, a second conductive layer disposed on the first insulating film, and contacting the first conductive layer through the first contact hole and the second contact hole, a plate disposed in the same layer as the second conductive layer, and spaced apart from the second conductive layer, and each of the first conductive layer, the active layer, and the plate serves as an electrode of a storage capacitor, thereby implementing a high-capacity storage capacitor for the display panel.
    Type: Grant
    Filed: November 29, 2021
    Date of Patent: January 2, 2024
    Assignee: LG Display Co., Ltd.
    Inventors: Younghee Lee, HyunHaeng Lee, HyoBin Choi
  • Patent number: 11783784
    Abstract: A display device, a driving circuit and a driving method with an improved image quality in a sensing process for a characteristic value. In addition, aspects of the present disclosure relate a display device, a driving circuit and a driving method capable of diminishing luminance non-uniformity occurring in a sensing process by sensing a characteristic value for each signal line with the same luminance.
    Type: Grant
    Filed: October 29, 2021
    Date of Patent: October 10, 2023
    Assignee: LG DISPLAY CO., LTD.
    Inventor: HyunHaeng Lee
  • Patent number: 11705065
    Abstract: In a display device and display panel, a display panel includes: a plurality of pixels arranged in a matrix, each including two white subpixels and a plurality of colored subpixels, and a data pad connecting two adjacent colored subpixels, among the plurality of colored subpixels, corresponding to a same color, in a first direction, wherein luminance data is applied to the white subpixel, wherein each of the plurality of colored subpixels includes a dual subpixel having a size of the two white subpixels arranged in a second direction, the dual subpixel including a plurality of transistors, wherein a first transistor in the dual subpixel is connected to a first signal line extending through a first of the two white subpixels, and wherein a second transistor in the dual subpixel, is connected to a second signal line extending through a second of the two white subpixels.
    Type: Grant
    Filed: December 9, 2021
    Date of Patent: July 18, 2023
    Assignee: LG Display Co., Ltd.
    Inventor: HyunHaeng Lee
  • Patent number: 11436982
    Abstract: Various embodiments provide a data driver circuit, a controller, a display device, and a method of driving the same. Overlap driving of overlapping subpixels and fake data insertion driving of inserting a fake image, different from real images, into each of a plurality of lines are performed in a combined manner. Image quality is improved, despite of combined driving.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: September 6, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: JiHyun Kang, HyunHaeng Lee
  • Publication number: 20220208097
    Abstract: In a display device and display panel, a display panel includes: a plurality of pixels arranged in a matrix, each including two white subpixels and a plurality of colored subpixels, and a data pad connecting two adjacent colored subpixels, among the plurality of colored subpixels, corresponding to a same color, in a first direction, wherein luminance data is applied to the white subpixel, wherein each of the plurality of colored subpixels includes a dual subpixel having a size of the two white subpixels arranged in a second direction, the dual subpixel including a plurality of transistors, wherein a first transistor in the dual subpixel is connected to a first signal line extending through a first of the two white subpixels, and wherein a second transistor in the dual subpixel, is connected to a second signal line extending through a second of the two white subpixels.
    Type: Application
    Filed: December 9, 2021
    Publication date: June 30, 2022
    Applicant: LG DISPLAY CO., LTD.
    Inventor: HyunHaeng Lee
  • Publication number: 20220208921
    Abstract: The disclosure relates to an organic light emitting display panel and an organic light emitting display device including the display panel. Specifically, the organic light emitting display panel includes a buffer layer on a first conductive layer, an active layer on or over the buffer layer, a first insulating film on or over the active layer and overlapping a part of an upper surface of the active layer, a second insulating film on or over the first insulating film and including a first contact hole exposing the part of the upper surface of the active layer, an electrode of an organic light emitting element contacting the active layer through the first and second contact holes, wherein an area in which the active layer and a second conductive layer contact is included in a node at which a reference voltage is applied to a driving transistor.
    Type: Application
    Filed: November 22, 2021
    Publication date: June 30, 2022
    Inventors: Younghee Lee, HyunHaeng Lee
  • Publication number: 20220208922
    Abstract: Embodiments of the present disclosure are related to a display device, as arranging a storage capacitor and an active pattern disposed on a subpixel by using an active layer that a semiconductor layer and a conductive layer are laminated, an area of the storage capacitor can be increased efficiently and methods can be provided to use an area overlapped with a contact-hole located on the active pattern as an area of the storage capacitor. Furthermore, as a location of the contact-hole is adjusted easily, by making the contact-hole not to be disposed on an area adjacent to a driving transistor, a size of the driving transistor can be increased and an aperture ratio of the subpixel can be improved.
    Type: Application
    Filed: November 30, 2021
    Publication date: June 30, 2022
    Applicant: LG DISPLAY CO., LTD.
    Inventors: HyunHaeng LEE, Kiwoong SONG
  • Publication number: 20220199039
    Abstract: A display device, a driving circuit and a driving method with an improved image quality in a sensing process for a characteristic value. In addition, aspects of the present disclosure relate a display device, a driving circuit and a driving method capable of diminishing luminance non-uniformity occurring in a sensing process by sensing a characteristic value for each signal line with the same luminance.
    Type: Application
    Filed: October 29, 2021
    Publication date: June 23, 2022
    Applicant: LG DISPLAY CO., LTD.
    Inventor: HyunHaeng LEE
  • Publication number: 20220199717
    Abstract: An organic light emitting display panel and an organic light emitting display device including the display panel that includes a buffer layer disposed on a first conductive layer, and including a first contact hole overlapping a part of the first conductive layer, an active layer disposed on the buffer layer, a first insulating film disposed on the active layer and the buffer layer, and including a second contact hole overlapping the first contact hole, a second insulating film disposed over the first insulating film, and including a third contact hole overlapping a part of each of the first contact hole and the second contact hole, and a third conductive layer disposed on the second insulating film, and contacting a part of the second conductive layer through the second contact hole. The third contact hole does not overlap with the active layer.
    Type: Application
    Filed: November 23, 2021
    Publication date: June 23, 2022
    Applicant: LG DISPLAY CO., LTD.
    Inventors: HyunHaeng LEE, Kiwoong SONG
  • Publication number: 20220199718
    Abstract: A display panel of an organic light emitting display device includes a buffer layer disposed on a first conductive layer, and including a first contact hole, an active layer disposed on the buffer layer, and including an active pattern and a conductive pattern disposed on the active pattern, a first insulating film disposed on or over the active layer and the buffer layer, and including a second contact hole overlapping with the first contact hole, a second conductive layer disposed on the first insulating film, and contacting the first conductive layer through the first contact hole and the second contact hole, a plate disposed in the same layer as the second conductive layer, and spaced apart from the second conductive layer, and each of the first conductive layer, the active layer, and the plate serves as an electrode of a storage capacitor, thereby implementing a high-capacity storage capacitor for the display panel.
    Type: Application
    Filed: November 29, 2021
    Publication date: June 23, 2022
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Younghee LEE, HyunHaeng LEE, HyoBin CHOI
  • Publication number: 20200043420
    Abstract: Various embodiments provide a data driver circuit, a controller, a display device, and a method of driving the same. Overlap driving of overlapping subpixels and fake data insertion driving of inserting a fake image, different from real images, into each of a plurality of lines are performed in a combined manner. Image quality is improved, despite of combined driving.
    Type: Application
    Filed: August 1, 2019
    Publication date: February 6, 2020
    Inventors: JiHyun KANG, HyunHaeng LEE
  • Patent number: 9179137
    Abstract: A gate driver and an organic light emitting diode (OLED) display including the gate driver are disclosed. The gate driver includes a shift register block including a plurality of cascade-connected shift registers, a selection block including a plurality of selection units, which are respectively connected to the plurality of shift registers, and a buffer block including a plurality of buffers, which are respectively connected to the plurality of selection units. Each of the shift registers outputs a scan pulse, whose a phase is shifted by one horizontal period, in response to a start voltage, a first clock, a second clock, and a third clock.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: November 3, 2015
    Assignee: LG Display Co., Ltd.
    Inventors: Hyunhaeng Lee, Kisu Park, Joongsun Yoon
  • Patent number: 9147723
    Abstract: Provided are an organic light emitting display (OLED) device and a method of repairing the same. The OLED device includes: a first pixel including: a first thin-film transistor (TFT) including a source electrode, a second TFT, and a third TFT including a top gate electrode, a second pixel including an OLED including a first electrode, a repair line extending over: the first electrode of the OLED of the second pixel, the source electrode of the first TFT of the first pixel, and the top gate electrode of the third TFT of the first pixel, an insulating layer between at least a portion of: the top gate electrode of the third TFT of the first pixel, and the repair line.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: September 29, 2015
    Assignee: LG Display Co., Ltd.
    Inventors: HyunHaeng Lee, SooHong Choi