Patents Assigned to LG Display Co., Ltd.
  • Patent number: 11934607
    Abstract: A touch display device and a display panel uniformly distributing capacitances between the touch lines and the touch electrodes are provided. The device includes a display panel in which a plurality of X-touch electrodes are electrically connected to form a X-touch electrode line and a plurality of X-touch electrode lines arranged in parallel to receive a plurality of touch driving signals, and a plurality of Y-touch electrode lines to transmit a plurality of touch sensing signals, and a touch driving circuit. A plurality of X-touch lines transmit the touch driving signals connect together the plurality of X-touch electrodes constituting a same X-touch electrode line through a plurality of contact holes. Distances between at least one Y-touch electrode line and the plurality of contact holes through which the plurality of X-touch lines are electrically connected to the X-touch electrodes adjacent to the at least one Y-touch electrode line are uniform.
    Type: Grant
    Filed: March 17, 2023
    Date of Patent: March 19, 2024
    Assignee: LG Display Co., Ltd.
    Inventors: Wooram Oh, YoungChul Kwon
  • Patent number: 11934058
    Abstract: Disclosed are a display device, a multi-screen display device using the same, which include a minimized bezel area and a method for manufacturing the display device. The display device including a display substrate including a plurality of subpixels respectively provided in a plurality of pixel areas defined by a plurality of data lines and a plurality of gate lines, a line substrate bonded to the display substrate by using a substrate bonding member and including a plurality of data routing lines, and a side data connection member provided on one side of each of the display substrate and the line substrate to connect the plurality of data lines to the plurality of gate lines in a one-to-one relationship.
    Type: Grant
    Filed: September 26, 2022
    Date of Patent: March 19, 2024
    Assignee: LG Display Co., Ltd.
    Inventors: WooNam Jeong, SeungChul Lee
  • Patent number: 11934601
    Abstract: A touch display device includes a first horizontal electrode including a plurality of first electrode parts spaced apart from one another in a horizontal direction and a plurality of first bridge parts connecting the plurality of first electrode parts; a second horizontal electrode including a plurality of second electrode parts spaced apart from the first horizontal electrode in a vertical direction and spaced apart from one another in the horizontal direction and a plurality of second bridge parts connecting the plurality of second electrode parts; a third horizontal electrode including a plurality of third electrode parts spaced apart from the second horizontal electrode in the vertical direction and spaced apart from one another in the horizontal direction and a plurality of third bridge parts connecting the plurality of third electrode parts; a first horizontal touch line electrically connected to the first horizontal electrode and disposed to extend in the vertical direction; a second horizontal touch l
    Type: Grant
    Filed: October 21, 2022
    Date of Patent: March 19, 2024
    Assignee: LG Display Co., Ltd.
    Inventors: Haewon Lee, Jinseong Kim, JuHan Kim
  • Patent number: 11935475
    Abstract: A display device includes a display panel including a light emitting element, a driving transistor for providing a driving current to the light emitting element using a driving voltage, and a plurality of switching transistors for controlling the operation of the driving transistor; a gate driving circuit for supplying a plurality of scan signals to the display panel through a plurality of gate lines; an emission driving circuit for supplying a plurality of emission signals to the display panel through a plurality of emission signal lines; a data driving circuit for supplying a data voltage to the display panel; and a timing controller for controlling a leakage suppression voltage to be supplied to the driving transistor in a leakage suppression period after a bias voltage is supplied to the driving transistor in a low speed mode in which the display panel is driven at a lower driving frequency.
    Type: Grant
    Filed: October 26, 2022
    Date of Patent: March 19, 2024
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Junhwan Noh, SungBae An
  • Patent number: 11935443
    Abstract: A display defect detection circuit of a display defect detection system includes a preprocessing circuit configured to receive a capture image of a test pattern, displayed by a display panel, as a panel image including target Mura having a repetitive characteristic and preprocess the panel image to output a preprocessing image and a Mura detection circuit configured to decrease a total size of the preprocessing image on the basis of a size of the target Mura to generate a resize image, detect an edge component in the resize image to generate an edge map image having feature values, remove a feature value of a non-repetitive type among the feature values of the edge map image to generate a feature map image, and detect a display position of the target Mura on the basis of a final feature value of the target Mura calculated based on the feature map image.
    Type: Grant
    Filed: August 25, 2022
    Date of Patent: March 19, 2024
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Yeong Yu, Jong Ju Hong
  • Patent number: 11935486
    Abstract: The present disclosure provides a display device including a display panel and a scan signal generator configured to generate a (1-1)th scan signal and a (1-2)th scan signal to be supplied to a first horizontal line of the display panel and a (2-1)th scan signal and a (2-2)th scan signal to be supplied to a second horizontal line of the display panel, wherein the scan signal generator includes a switch circuit, and an output circuit.
    Type: Grant
    Filed: November 10, 2022
    Date of Patent: March 19, 2024
    Assignee: LG Display Co., Ltd.
    Inventors: Jae Young Lee, Dae Sung Jung, Sung Woo Lee
  • Patent number: 11935491
    Abstract: A display device comprises a display panel including a plurality of sub-pixels defined by a plurality of gate lines and a plurality of data lines; and an auxiliary ground voltage line disposed between two adjacent data lines of the plurality of data lines.
    Type: Grant
    Filed: March 27, 2023
    Date of Patent: March 19, 2024
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Seong-Wook Choi, Jin-Uk Lee
  • Patent number: 11937462
    Abstract: An electroluminescent display device includes an electroluminescent display device includes a substrate; a first pixel row on the substrate including a first plurality of pixels arranged along a first direction; a second pixel row on the substrate including a second plurality of pixels arranged along the first direction, the second pixel row being spaced apart from the first pixel row in a second direction; a first groove between the first and second pixel rows; and a light emitting diode in each pixel of the first and second pixel rows, wherein the first groove includes a first portion at one end of the first pixel row, a second portion at the other end of the first pixel row and a third portion between the first and second portions, and wherein third portion is smaller than the first portion and greater than the second portion.
    Type: Grant
    Filed: February 23, 2022
    Date of Patent: March 19, 2024
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Jeong-Mook Choi, Nack-Youn Jung, Hee-Jin Kim, Hak-Min Lee, Myung-O Joo, Sung-Soo Park
  • Patent number: 11934604
    Abstract: Embodiments of the present disclosure are related to a touch display device, as a plurality of first line parts disposed on a first sensor layer and a plurality of second line parts disposed on a second sensor layer are alternated to make a touch line, at least a portion of different touch lines can be disposed to be overlapped each other, thus a plurality of touch lines can be disposed while reducing or minimizing a reduction of an aperture ratio or a transmittance of a subpixel due to an arrangement of the touch line. Accordingly, a touch sensitivity can be enhanced by further disposing touch electrodes, or the touch display device having a large area with many channels can be implemented easily by further disposing touch lines.
    Type: Grant
    Filed: October 5, 2021
    Date of Patent: March 19, 2024
    Assignee: LG Display Co., Ltd.
    Inventors: YongChan Park, HwiDeuk Lee, Yangsik Lee, Hyunsuk Cho
  • Patent number: 11935482
    Abstract: A pixel circuit includes a first switch element turned on by a gate-on voltage of a first scan pulse to apply a data voltage to a first node; a second switch element turned on by a gate-on voltage of a second scan pulse to connect a second node to a third node; a third switch element turned on by a gate-on voltage of a light-emitting control pulse to apply a reference voltage to the first node; a fourth switch element turned on by the gate-on voltage of the light-emitting control pulse to connect the third node to a fourth node; and a fifth switch element turned on by a gate-on voltage of the second scan pulse to apply the reference voltage to the fourth node. A voltage higher than or equal to the pixel driving voltage is applied to the third node before generation of the first scan pulse.
    Type: Grant
    Filed: September 27, 2022
    Date of Patent: March 19, 2024
    Assignee: LG Display Co., Ltd.
    Inventors: Woo Kyu Sang, Moon Soo Chung
  • Patent number: 11935993
    Abstract: A stretchable display device according to present disclosure may include a base substrate, a plurality of first substrates on the base substrate, a plurality of second substrates connecting adjacent first substrates, inorganic insulating layers on the first substrates, an organic insulating layer disposed on the first substrates so as to cover top surfaces and side surfaces of the inorganic insulating layers. The device includes first connection lines disposed on the organic insulating layer on the first substrates and disposed on a second substrate extending in a first direction, second connection lines disposed between the inorganic insulating layers and the organic insulating layer on the first substrates and disposed on a second substrate extending in a second direction, and a step alleviating layer disposed between the second connection lines and the inorganic insulating layers.
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: March 19, 2024
    Assignee: LG Display Co., Ltd.
    Inventors: Hyeseon Eom, Jonghyeok Im, Doohyun Yoon
  • Patent number: 11935459
    Abstract: A display apparatus can include a display panel configured to display a black image and a real image, a gate driver configured to display gate signals to a plurality of gate lines provided in a display area of the display panel, and a controller configured to control the gate driver. Here, one-frame period for displaying the black image is shorter than one-frame period where the real image is displayed. Further, the gate driver can include a plurality of stages configured to supply the gate signals to the plurality of gate lines, and a plurality of dummy stages connected directly between the plurality of stages and the controller. In addition, gate start signals for driving the plurality of stages are supplied to the plurality of dummy stages by the controller.
    Type: Grant
    Filed: November 1, 2022
    Date of Patent: March 19, 2024
    Assignee: LG DISPLAY CO., LTD.
    Inventors: KeyYoung Yang, Jihoon Yu, Bumhee Han
  • Publication number: 20240085999
    Abstract: A touch display device can include a display panel including a plurality of data lines, a plurality of gate lines, a plurality of subpixels, and a plurality of touch electrodes, each of the plurality of subpixels including a light emitting element and a driving transistor; and a signal conversion circuit configured to supply a driving signal to the plurality of subpixels in the display panel or a driving circuit connected to the display panel. Also, the driving signal can have a signal waveform corresponding to a signal waveform of a first power signal or a signal waveform of a second power signal.
    Type: Application
    Filed: July 27, 2023
    Publication date: March 14, 2024
    Applicant: LG Display Co., Ltd.
    Inventor: CheolSe KIM
  • Publication number: 20240086012
    Abstract: A display device having a touch sensor can include a display panel including a plurality of touch electrodes, and a readout integrated circuit (IC). Also, the readout IC is configured to apply a touch driving signal to the plurality of touch electrodes and amplify charges from the plurality touch electrodes according to an amplifier reset signal to generate an amplifier output voltage, and differentially adjust a toggle timing of the amplifier reset signal based on positions of the plurality of touch electrodes to control a level of the amplifier output voltage.
    Type: Application
    Filed: November 17, 2023
    Publication date: March 14, 2024
    Applicant: LG Display Co., Ltd.
    Inventors: Hyun Woo JANG, Ki Yong KIM, Jae Kyu PARK, Young Woo JO
  • Publication number: 20240086000
    Abstract: A touch display device in one example includes a blocking structure disposed on a substrate and surrounding at least a part of a display area of the substrate, and first touch electrode lines extending in a first direction in the display area. Each of the first touch electrode lines includes first touch electrodes. The touch display device further includes first touch lines disposed on the substrate where a same signal is applied to the first touch electrodes of one of the first touch electrode lines by one of the first touch lines, second touch electrode lines disposed between the first touch electrodes in the display area, and second touch lines disposed on the substrate. Each of the second touch electrode lines is electrically connected to one of the second touch lines.
    Type: Application
    Filed: November 13, 2023
    Publication date: March 14, 2024
    Applicant: LG Display Co., Ltd.
    Inventors: Sang Jin KIM, In Tae KO
  • Publication number: 20240090326
    Abstract: The present disclosure relates to an organic compound having the following structure, and an organic light emitting diode (OLED) and an organic light emitting device including the organic compound. The organic compound can be a bipolar compound having a p-type moiety and an n-type moiety and has high energy level and proper energy bandgap for an emissive layer of the OLED. As the organic compound is applied into the emissive layer, the OLED can maximize its luminous properties as holes and electrons are recombined uniformly over the whole area in an emitting material layer (EML).
    Type: Application
    Filed: September 26, 2023
    Publication date: March 14, 2024
    Applicants: LG DISPLAY CO., LTD, KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION
    Inventors: Kyung-Jin YOON, Dae-Wi YOON, Ji-Ae LEE, Su-Na CHOI, Dong-Hoon CHOI, Min-Ju CHO, JiWon YOON
  • Publication number: 20240090276
    Abstract: A display panel include a data signal line for supplying a data signal; a scan signal line for supplying a scan signal; and a subpixel connected to the data signal line and the scan signal line and including a first transistor including a first active layer, a first source electrode connected to one side of the first active layer, a first drain electrode connected to another side of the first active layer, and a first gate electrode overlapping with the first active layer, overlapping with all or at least a portion of the first source electrode, and overlapping with all or at least a portion of the first drain electrode, and are capable of preventing the exposure of the first transistor to light or hydrogen, and thereby preventing a decrease in characteristics of the first transistor due to light or hydrogen.
    Type: Application
    Filed: August 21, 2023
    Publication date: March 14, 2024
    Applicant: LG Display Co., Ltd.
    Inventors: ChanYong JEONG, Younghyun KO, JuHeyuck BAECK
  • Publication number: 20240090268
    Abstract: A display panel can include a first area including a first plurality of subpixels, a second area including a second plurality of subpixels, and at least one light-transmitting portion between adjacent subpixels among the second plurality of subpixels. Also, a first subpixel in the first area includes a first light emitting layer, a first thin film transistor including a first channel area, and a first conductive member disposed under and overlapping with the first channel area of the first thin film transistor, and a second subpixel in the second area includes a second light emitting layer, a second thin film transistor including a second channel area, and a second conductive member disposed under and overlapping with the second channel area of the second thin film transistor. The first conductive member in the first subpixel in the first area is on a higher layer than the second conductive member.
    Type: Application
    Filed: November 22, 2023
    Publication date: March 14, 2024
    Applicant: LG Display Co., Ltd.
    Inventors: Mihee SHIN, Minha KANG, JuhnSuk YOO, YongMin HA
  • Publication number: 20240087538
    Abstract: A display device according to an exemplary embodiment of the present disclosure includes a light emitting diode and a pixel driving circuit which drives the light emitting diode, the pixel driving circuit includes a driving transistor which applies a driving current to the light emitting diode, a first transistor which applies a first reference voltage to a gate electrode of the driving transistor, a second transistor which applies a data voltage to the gate electrode of the driving transistor, a third transistor which applies a second reference voltage to a source electrode of the driving transistor, and a storage capacitor connected to the gate electrode and the source electrode of the driving transistor. According to the present disclosure, the threshold voltage Vth and the mobility of the driving transistors are internally compensated to improve an image quality.
    Type: Application
    Filed: September 6, 2023
    Publication date: March 14, 2024
    Applicants: LG Display Co., Ltd., Industry-University Cooperation Foundation Hanyang University
    Inventors: Harkjin KIM, Kwanghwan JI, Byong-Deok CHOI, Bum Sik KIM, Dong Young KIM, Yong Duck KIM, June Hee LEE
  • Publication number: 20240089657
    Abstract: A sound control system includes a sound generating device disposed at a vehicle ceiling corresponding to a seat region of the vehicle and at a sound space formed within the vehicle to correspond to the seat region, and a sound processing circuit for providing a vibration driving signal to the sound generating device. The sound generating device vibrates an interior material of the vehicle ceiling based on the vibration driving signal.
    Type: Application
    Filed: November 14, 2023
    Publication date: March 14, 2024
    Applicant: LG Display Co., Ltd.
    Inventors: Taehyung KIM, Jeonggoo KANG