Patents Assigned to Joled, Inc.
  • Patent number: 10749134
    Abstract: The pixels of an organic EL display panel each include an anode electrode layer, an organic layer, and a cathode electrode layer. Each of the organic layer and the cathode electrode layer is shared by the plurality of pixels. An organic EL element in each of the pixels includes an anode section, a cathode section, and a light emitting section. A conductor layer having a recess is provided in a region outside a region of the organic EL element in a view from a light exiting direction in which the organic EL element emits light. The recess includes a coated section that is covered with the organic layer and a conductor exposed section where the conductor layer is exposed. The cathode electrode layer is connected to part of the conductor exposed section.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: August 18, 2020
    Assignee: JOLED INC.
    Inventors: Tetsuro Yamamoto, Yasunobu Hiromasu
  • Publication number: 20200258451
    Abstract: An EL display apparatus is provided. A display screen includes pixels arranged in a matrix, with each pixel including an EL device and a pixel circuit. A source driver circuit is configured to output an analog video signal to each pixel. A gate driver circuit is on at least one side of the display screen, with the gate driver circuit including first and second gate driver circuits. Each pixel includes a driving transistor, a first switch transistor, and a second switch transistor. A gate terminal of the first switch transistor is connected to a first gate signal line of the first gate driver circuit, and a gate terminal of the second switch transistor is connected to a second gate signal line of the second gate driver circuit. The first and second switch transistors are on/off controlled, independently, by the first and second gate driver circuits.
    Type: Application
    Filed: April 29, 2020
    Publication date: August 13, 2020
    Applicant: JOLED INC.
    Inventors: Hiroshi TAKAHARA, Hitoshi TSUGE
  • Patent number: 10743386
    Abstract: A display device includes a pixel including a plurality of sub-pixels. Each of the plurality of sub-pixels includes: a light-emission region; and a non-light-emission region other than the light-emission region. The light-emission region includes one or more effective light-emitting parts in which a first electrode, a light emitting layer, and a second electrode are stacked in order, and a light guide provided on side of the one or more effective light-emitting parts on which light is extracted.
    Type: Grant
    Filed: May 9, 2017
    Date of Patent: August 11, 2020
    Assignee: JOLED INC.
    Inventors: Kaoru Abe, Kazuma Teramoto, Toshiaki Imai, Jiro Yamada, Takahide Ishii, Hideki Kobayashi
  • Publication number: 20200249815
    Abstract: A display device includes: a display panel; a touch panel opposing the display panel; and a controller. The display panel includes: pixels arranged in rows and columns; and scan lines that are respectively arranged for the rows and select a pixel row to which data voltages corresponding to a video signal is to be written and a pixel row for performing black display. The touch panel includes scan electrodes respectively elongated in parallel to the scan lines and receiving scan signals. The controller causes a scan signal to be applied to a scan electrode overlapping the pixel row performing the black display in a plan view of the touch panel.
    Type: Application
    Filed: January 28, 2020
    Publication date: August 6, 2020
    Applicant: JOLED INC.
    Inventor: Masanori OHARA
  • Publication number: 20200251548
    Abstract: A pixel circuit disposed in a pixel region including three subpixel regions includes: three light-emitting elements that are disposed in the subpixel regions and have mutually different luminescent colors; one drive circuit that is disposed in a subpixel region serving as a first subpixel region, and supplies drive current to the three light-emitting elements in time division; and a positive power supply line serving as a first power supply line that is disposed in a subpixel region serving as a second subpixel region, and supplies power supply voltage to the drive circuit.
    Type: Application
    Filed: January 24, 2020
    Publication date: August 6, 2020
    Applicant: JOLED INC.
    Inventor: Masanori OHARA
  • Publication number: 20200243613
    Abstract: Disclosed are an organic EL display panel and a method of manufacturing an organic EL display panel including a display element array having a plurality of pixels arranged in a form of a matrix. An organic EL display panel includes: a substrate; a planarizing layer; an organic electro luminescence element array; an electrode plate; a plurality of sealing members; and a sealing layer. The method of manufacturing an organic EL display panel includes: preparing a substrate; forming a planarizing layer; forming a plurality of pixel electrodes, and forming an electrode plate; forming sealing members; forming functional layers; forming a common electrode; and forming a sealing layer on the common electrode.
    Type: Application
    Filed: January 23, 2020
    Publication date: July 30, 2020
    Applicant: JOLED Inc.
    Inventors: Kenichi NENDAI, Takashi OSAKO, Kenji KOKUDA
  • Patent number: 10727290
    Abstract: An active-matrix display device includes pixels arranged in a matrix, and each of the pixels includes subpixels that are arranged along an X direction and emit light of mutually different colors. Each of the subpixels includes a TFT element provided on a TFT substrate and an organic EL element provided on the TFT substrate. The organic EL element has an opening which is a region from which emitted light exits, and the TFT substrate includes a first layer and a second layer. When same-colored subpixels of two of the pixels adjacent in the X direction are seen in a plan view, the first layer has a portion arranged in line symmetry between the same-colored subpixels and the second layer is disposed at an identical position in the openings of the same-colored subpixels.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: July 28, 2020
    Assignee: JOLED INC.
    Inventor: Tetsuro Yamamoto
  • Patent number: 10727441
    Abstract: A display device includes: a panel unit that includes pixel drive circuits; and a panel terminal unit on an edge portion of the panel unit. The panel terminal unit includes: a board; wiring electrodes disposed on the board and connected to the pixel drive circuits; a mounted component mounted on the board and connected to the wiring electrodes; a protective film that is on the board and covers the wiring electrodes except for a mounting area where the mounted component is mounted on the board; and a resin portion that covers the mounted component and a portion of the protective film and not covers a rest of the protective film.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: July 28, 2020
    Assignee: JOLED, INC.
    Inventor: Yuki Kishi
  • Publication number: 20200235175
    Abstract: A display panel includes a planarization layer, self-luminous elements, a first wiring line, a second wiring line, and a sensing wiring line. The first wiring line is coupled to the first electrode layer through a first opening of the planarization layer. The second wiring line is coupled to the second electrode layer through a second opening of the planarization layer. The sensing wiring line is provided in a region and is electrically separated from the first electrode layer, the second electrode layer, the first wiring line, and the second wiring line. The region is positioned in the same layer as the first electrode layer, in the same layer as the second wiring line, or in a layer disposed between the first electrode layer and the second wiring line, and is positioned between the first electrode layer and the second opening.
    Type: Application
    Filed: January 6, 2020
    Publication date: July 23, 2020
    Applicant: JOLED Inc.
    Inventor: Eiji HASEGAWA
  • Publication number: 20200234640
    Abstract: A pixel circuit includes: one data signal line; one holding capacitor which holds a data signal transmitted through the one data signal line; one drive transistor which outputs a current in accordance with the data signal held at the one holding capacitor; three color selection lines; three color selection transistors having control terminals respectively connected to the three color selection lines that are mutually different; and three light emitting elements being connected to an output end of the current of the one drive transistor via the three color selection transistors, respectively, that are mutually different, and emitting luminescent colors that are mutually different.
    Type: Application
    Filed: December 17, 2019
    Publication date: July 23, 2020
    Applicant: JOLED INC.
    Inventor: Masanori OHARA
  • Patent number: 10720105
    Abstract: A control device includes a data storing unit, a synchronization control unit, and a duty control unit. The synchronization control unit starts a frame period when a vertical synchronization signal is received. The frame period includes a video image period and an extended period. The synchronization control unit initializes pixel circuits within a predetermined period after the reception of the vertical synchronization signal, temporarily stores the video image signal in the data storing unit after the reception of the vertical synchronization signal, and supplies the video image signal from the data storing unit to a display panel after the initialization and during the video image period. The duty control unit causes the display panel to emit light after the initialization and during the video image period, and controls the display panel such that the display panel emits and extinguishes light at a predetermined duty ratio during the extended period.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: July 21, 2020
    Assignee: JOLED INC.
    Inventor: Hiroaki Ishii
  • Patent number: 10720602
    Abstract: A display unit includes a flexible substrate, a display device layer, a polarizer, a first moisture barrier film, and a second moisture barrier film. The display device layer is provided on the flexible substrate. The polarizer is provided over the flexible substrate with the display device layer being interposed between the flexible substrate and the polarizer and has a first surface opposed to the flexible substrate, a second surface facing the first surface, and an end surface connecting the first surface and the second surface. The first moisture barrier film covers the first surface of the polarizer. The second moisture barrier film covers the second surface and the end surface of the polarizer, and is in contact with the first moisture barrier film.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: July 21, 2020
    Assignee: JOLED INC.
    Inventors: Takahiro Seki, Kanta Judai
  • Patent number: 10720478
    Abstract: An organic EL display panel having a light emitting layer or a functional layer formed by an application method and having a beneficial film thickness control, and a manufacturing method thereof. The organic EL display panel includes a substrate, pixel electrodes above the substrate, banks in gaps between the pixel electrodes, and a first and a second light emitting layer. A film thickness of the first light emitting layer is thicker than that of the second light emitting layer. The bank is provided with a first and a second bank portion, a height of the first bank portion being higher than a height of the second bank portion. A first pinning position where a sidewall of the first bank portion contacts with the first light emitting layer is higher than a second pinning position where the sidewall of the second bank portion contacts with the second light emitting layer.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: July 21, 2020
    Assignee: JOLED INC.
    Inventor: Masahiko Kondo
  • Publication number: 20200227665
    Abstract: A luminescent panel includes an upper sealing layer, a lower sealing layer, and an organic electroluminescent layer. The organic electroluminescent layer is provided between the upper sealing layer and the lower sealing layer and includes one or a plurality of organic electroluminescent elements. At least one of the upper sealing layer or the lower sealing layer includes one or a plurality of inorganic sealing films each provided with a plurality of fracture control parts. The fracture control parts each include an inorganic material having relatively lower mechanical strength than parts of the one or plurality of inorganic sealing films other than the fracture control parts.
    Type: Application
    Filed: January 6, 2020
    Publication date: July 16, 2020
    Applicant: JOLED INC.
    Inventor: Atsushi SASAKI
  • Patent number: 10714549
    Abstract: An organic EL display panel including organic light emitting layers, each continuous in a column direction, in gaps between column banks. The organic light emitting layer in a gap end region extending in the column direction from a column direction end of the gap to a reference position a defined distance from the column direction end towards a display region and within a peripheral region has a volume greater than volumes of the organic light emitting layers in gap end regions extending in the column direction from column direction ends of the gaps to the reference position.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: July 14, 2020
    Assignee: JOLED INC.
    Inventors: Masashi Goto, Yoichi Shintani
  • Patent number: 10707283
    Abstract: An organic EL display panel in which pixels are arranged in a matrix, including: light-emitting layers disposed above pixel electrode layers in intervals between adjacent ones of column banks; an opposing electrode layer disposed above the light-emitting layers, the opposing electrode layer including a light-transmissive material; column light-shielding layers disposed higher than the pixel electrode layers, extending in the column direction, arranged side-by-side in the row direction, and overlapping row-direction edge portions of the pixel electrode layers in plan view of a substrate; and row light-shielding layers disposed higher than the pixel electrode layers, extending in the row direction, arranged side-by-side in the column direction, overlapping column-direction edge portions of the pixel electrode layers and partially overlapping contact regions in plan view of the substrate.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: July 7, 2020
    Assignee: JOLED INC.
    Inventor: Tetsuro Kondo
  • Publication number: 20200211462
    Abstract: An active-matrix display device includes a pixel matrix having a plurality of pixel cells arranged in rows and columns, and a data line disposed for each of the columns in the pixel matrix and connected to each pixel cell in a column. Each pixel cell includes a holding capacitor, including a first electrode connected to a gate of the drive transistor, a lower electrode connected to a source of the drive transistor, and an upper electrode connected to the source of the drive transistor. At least one of the lower electrode and the upper electrode protrudes toward the data line from a facing region in a plan view of the pixel matrix, such that a protruded amount, which is an amount of protrusion toward the data line, is greater than or equal to 15% of a distance between the data line and the first electrode in the facing region.
    Type: Application
    Filed: March 6, 2020
    Publication date: July 2, 2020
    Applicant: JOLED INC.
    Inventor: Shigeo HOMURA
  • Patent number: 10699639
    Abstract: An EL display apparatus is provided. A display screen includes pixels arranged in a matrix, with each pixel including an EL device and a pixel circuit. A source driver circuit is configured to output an analog video signal to each pixel. A gate driver circuit is on at least one side of the display screen, with the gate driver circuit including first and second gate driver circuits. Each pixel includes a driving transistor, a first switch transistor, and a second switch transistor. A gate terminal of the first switch transistor is connected to a first gate signal line of the first gate driver circuit, and a gate terminal of the second switch transistor is connected to a second gate signal line of the second gate driver circuit. The first and second switch transistors are on/off controlled, independently, by the first and second gate driver circuits.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: June 30, 2020
    Assignee: JOLED INC.
    Inventors: Hiroshi Takahara, Hitoshi Tsuge
  • Patent number: 10699634
    Abstract: A display device includes: a display unit in which light-emitting pixels are disposed in rows and columns; and a control circuit controlling the display unit. The light-emitting pixels each include: a light-emitting element (organic EL element); and a drive transistor which supplies the light-emitting element with a current causing the light-emitting element to emit light, and the control circuit, when display by the display unit is stopped, calculates an amount of shift of a threshold voltage of the drive transistor at a time when a stopped state of the display unit is started, and determines on the basis of the amount of shift, at least one of (i) a recovery voltage which reduces the amount of shift by being applied across a gate and source of the drive transistor while the display by the display unit is stopped, and (ii) an application period during which the recovery voltage is applied.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: June 30, 2020
    Assignee: JOLED INC.
    Inventors: Hiroshi Hayashi, Shinya Ono
  • Patent number: 10692946
    Abstract: An organic electroluminescence (EL) display panel includes pixels arranged in a matrix of rows and columns, and includes: a substrate; pixel electrode layers that are arranged on the substrate in the matrix; an insulating layer that is provided above the substrate and the pixel electrode layers, and has elongated openings and a grooved portion for each of the pixels, the openings extending in a column direction and being arranged in a row direction, the grooved portion having an upper opening and a bottom and being communicated with at least one of the openings in plan view; organic functional layers that are provided above the pixel electrode layers, and include light emitting layers in which organic electroluminescence occurs in the openings; and a light-transmissive counter electrode layer that is provided above the organic functional layers. Cross-sectional profiles of the openings taken along the row direction are uniform in the column direction.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: June 23, 2020
    Assignee: JOLED INC.
    Inventors: Jiro Yamada, Kazuma Teramoto, Kenichi Nendai, Kaoru Abe, Hideki Kobayashi, Hirotaka Nanno