Patents Assigned to Joled, Inc.
  • Patent number: 10937988
    Abstract: An organic EL display panel includes a substrate, a plurality of pixel electrodes disposed in a matrix pattern over the substrate, a first current feeding auxiliary electrode layer disposed to extend in a column or row direction in at least one of gaps between adjacent ones of the pixel electrodes over the substrate, a second current feeding auxiliary electrode layer that contains aluminum as a main constituent and is disposed to be superposed on the first current feeding auxiliary electrode layer, a plurality of light emitting layers disposed on the plurality of pixel electrodes, and a common electrode layer disposed continuously to cover the first current feeding auxiliary electrode layer and the second current feeding auxiliary electrode layer as well as an upper side of the plurality of light emitting layers.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: March 2, 2021
    Assignee: JOLED INC.
    Inventors: Masaki Nishimura, Hiroyuki Ajiki, Shuhei Yada, Yasuharu Shinokawa
  • Patent number: 10935214
    Abstract: A light-emitting device includes pixels each including subpixels. Each subpixel includes light-emitting elements that emit respective pieces of light of colors different from each other, and a light-shielding film having openings at respective positions where the openings are opposed to the respective light-emitting elements at predetermined intervals. The openings have respective widths different from each other. The widths of the respective openings in a first direction and a second direction are sized to allow the light-shielding film to block a portion of the pieces of light emitted from the respective light-emitting elements and thereby to cause a 45-degree luminance viewing angle to be different between the first and second directions, and are sized to cause color differences (?u?v?) at a 45-degree chromaticity viewing angle (u?v?) in the first and second directions to be 0.020 or less. The 45-degree luminance viewing angle is expressed in a unit of cd/m2.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: March 2, 2021
    Assignee: JOLED INC.
    Inventor: Toshihiro Fukuda
  • Patent number: 10932365
    Abstract: A flexible wiring board (a first wiring board) includes: an insulating substrate which is flexible; a first terminal which is conductive and is disposed on the insulating substrate; a second terminal which is conductive and is disposed on the insulating substrate; and a no-connection (NC) terminal which is conductive and is disposed on the insulating substrate between the first terminal and the second terminal. The first terminal, the NC terminal, and the second terminal are arranged at a uniform pitch in an arranging direction that is predetermined, and a width of the NC terminal in the arranging direction is smaller than a width of the first terminal in the arranging direction and a width of the second terminal in the arranging direction.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: February 23, 2021
    Assignee: JOLED INC.
    Inventor: Yutaka Nakano
  • Patent number: 10930877
    Abstract: Provided is a display apparatus and a method of manufacture. The display apparatus includes a first substrate with a plurality of organic electroluminescence devices, a second substrate with a color filter, the second substrate facing the first substrate, and an adhesive layer disposed between the first substrate and the second substrate so as to cover the plurality of organic electroluminescence devices, the adhesive layer being made of a material selected from the group consisting of a phenol resin, a melanin resin, an unsaturated polyester resin, an epoxy resin, a silicon resin and a polyurethane resin.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: February 23, 2021
    Assignee: Joled, Inc.
    Inventors: Yuichi Iwase, Yasunori Kijima, Jiro Yamada
  • Patent number: 10923030
    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: August 31, 2020
    Date of Patent: February 16, 2021
    Assignee: JOLED INC.
    Inventors: Hiroshi Takahara, Hitoshi Tsuge
  • Patent number: 10916203
    Abstract: A display apparatus has an image display unit having a plurality of arrayed pixel circuits, and an image signal compensation circuit compensating an image signal and outputs the compensated signal to the image display unit. Each of the pixel circuits has a compensating capacitor which compensates the threshold voltage of the driving transistor. The image signal compensation circuit has a compensation memory storing a compensation data for compensating the current variation of the driving transistors, a first comparison circuit which compares the image signal and first threshold value, and an arithmetic circuit compensating the image signal. When the image signal has a luminance larger than the threshold value, the compensation is performed.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: February 9, 2021
    Assignee: JOLED INC
    Inventor: Hitoshi Tsuge
  • Patent number: 10916729
    Abstract: A light-emitting display device includes an element-formation substrate and a plurality of pixels. The element-formation substrate includes a first barrier film and a second barrier film provided on a substrate, the first barrier film and the second barrier film being provided in the stated order from the substrate and suppressing ingress of moisture. The plurality of pixels is provided on the element-formation substrate. The element-formation substrate further includes an organic part that fills a crack occurred in the first barrier film, or that is attached around a part of a metallic foreign substance protruding from the first barrier film.
    Type: Grant
    Filed: July 25, 2019
    Date of Patent: February 9, 2021
    Assignee: JOLED INC.
    Inventors: Takashige Fujimori, Yuichiro Ishiyama
  • Patent number: 10909915
    Abstract: Disclosed is a light emitting device which includes organic electroluminescent sections each including a first electrode layer, an organic light emitting layer, a second electrode layer and a reflective layer in this order, and a light extraction surface. The reflective layer includes two reflective interfaces. In each of the organic electroluminescent sections, a microcavity structure is formed by a structure including a first reflective interface, a second reflective interface, and the two reflective interfaces. The organic electroluminescent sections include first organic electroluminescent sections and second organic electroluminescent sections. The microcavity structure is configured in such a manner that the first reflective interface and the second reflective interface intensify the light in the first wavelength band and the light in the second wavelength band, and that the two reflective interfaces weaken the light in the first wavelength band and intensify the light in the second wavelength band.
    Type: Grant
    Filed: May 15, 2019
    Date of Patent: February 2, 2021
    Assignee: JOLED INC.
    Inventor: Toshihiro Fukuda
  • Patent number: 10910599
    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: Grant
    Filed: January 6, 2020
    Date of Patent: February 2, 2021
    Assignee: JOLED INC.
    Inventor: Atsushi Sasaki
  • Patent number: 10896638
    Abstract: A luminance controlling unit includes a luminance controller that controls luminance of a pixel array. The pixel array includes pixels each including a current-driven self-luminescent element. The luminescent controller sets, on the basis of an image signal corresponding to a frame image, a threshold that is directed to detection of a maximum signal level of the image signal, and performs dynamic control of a potential difference between a first voltage and a second voltage on the basis of the maximum signal level detected with reference to the set threshold. The first voltage is outputted from a first voltage source adjacent to an anode of the self-luminescent element, and the second voltage is outputted from a second voltage source adjacent to a cathode of the self-luminescent element.
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: January 19, 2021
    Assignee: JOLED INC.
    Inventors: Hiroaki Ishii, Teppei Isobe
  • Patent number: 10892429
    Abstract: An organic electroluminescent (EL) element includes: a first electrode; an interlayer formed above the first electrode; an organic light-emitting layer formed using the interlayer as a foundation; and a second electrode formed above the organic light-emitting layer. The organic light-emitting layer contains at least a host material and a dopant material. The interlayer is formed using a material which has an energy gap larger than an energy gap of the dopant material and a highest occupied molecular orbital (HOMO) level deeper than a HOMO level of the dopant material.
    Type: Grant
    Filed: November 17, 2015
    Date of Patent: January 12, 2021
    Assignee: JOLED INC.
    Inventors: Kazuhiro Yoneda, Noriyuki Matsusue
  • Patent number: 10892431
    Abstract: An organic electroluminescent element includes, in order, a first electrode, an organic layer that includes an organic electroluminescent layer, an interface adjustment layer, a resistive layer, and a second electrode. The resistive layer has a specific resistance higher than a specific resistance of the second electrode. The interface adjustment layer has a specific resistance higher than the specific resistance of the second electrode and lower than the specific resistance of the resistive layer.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: January 12, 2021
    Assignee: JOLED INC.
    Inventors: Shina Kirita, Takayuki Shimamura
  • Patent number: 10886411
    Abstract: A semiconductor device includes a substrate, a transistor, a storage capacitor, a first insulating layer, and a second insulating layer. The transistor includes a semiconductor film, a gate insulating film, a first gate electrode, and a second gate electrode. The semiconductor film, the gate insulating film, and the first gate electrode are provided in this order from the substrate. The second gate electrode faces the first gate electrode across the semiconductor film. The storage capacitor includes a lower electrode and an upper electrode that are provided in this order from the substrate. The upper electrode faces the lower electrode and includes the same material as the semiconductor film. The first insulating layer is provided between the second gate electrode and the semiconductor film. The second insulating layer is provided between the lower electrode and the upper electrode and has a smaller thickness than the first insulating layer.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: January 5, 2021
    Assignee: JOLED INC.
    Inventor: Yasuhiro Terai
  • Patent number: 10879402
    Abstract: A thin film transistor includes a substrate, a semiconductor layer, a first gate insulating film, a second gate insulating film, and a gate electrode. The semiconductor layer is provided in a selective region of the substrate. The first gate insulating film is provided in the selective region of the substrate and covers a surface of the semiconductor layer. The second gate insulating film extends across opposite sides of the first gate insulating film along a channel width direction and covers the first gate insulating film that covers the semiconductor layer. The gate electrode faces the semiconductor layer across the second gate insulating film.
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: December 29, 2020
    Assignee: JOLED INC.
    Inventors: Naoki Asano, Tokuaki Kuniyoshi
  • Patent number: 10879501
    Abstract: An ink drying process includes exhausting gas from atmosphere surrounding a substrate and drying ink through placing the substrate in a predefined pressure or less to form organic functional layers. Exhausting of gas includes: reducing, during a first period, pressure of the atmosphere from standard atmospheric pressure to a first pressure higher than vapor pressure of solvent having the highest vapor pressure among solvents of the ink; and subsequently reducing, during a second period, the pressure of the atmosphere to a second pressure lower than vapor pressure of solvent having the lowest vapor pressure among the solvents. Where pressure of the atmosphere is 10x Pa (X indicating a real number), a change amount average of X per unit time has a greater absolute value during the second period than during the first period.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: December 29, 2020
    Assignee: JOLED INC.
    Inventors: Toshio Fukuda, Noriteru Maeda
  • Patent number: 10878753
    Abstract: An organic electroluminescent panel includes a plurality of partition walls, an organic light-emitting layer, and a protective layer. The plurality of partition walls define a pixel region, and include an organic material. The organic light-emitting layer crosses over the plurality of partition walls. The protective layer is disposed between each of the partition walls and the organic light-emitting layer, and has a moisture permeability lower than a moisture permeability of any of the partition walls.
    Type: Grant
    Filed: January 9, 2018
    Date of Patent: December 29, 2020
    Assignee: JOLED INC.
    Inventor: Kosuke Mishima
  • Patent number: 10879327
    Abstract: An organic EL display panel includes a substrate, an interlayer insulation layer formed over the substrate, and an organic EL light emitting section formed over the interlayer insulation layer. The organic EL light emitting section includes a plurality of pixel electrodes arranged in a matrix pattern, a plurality of partition walls each of which is disposed between the pixel electrodes adjacent to each other in a row direction and extends in a column direction, an organic layer including a light emitting layer formed in a region partitioned by the partition walls, and a counter electrode formed on an upper side of the organic layer, and includes a first light emitting section for a first color and a second light emitting section for a second color. The first and second light emitting sections are different in thickness of the organic layer and in digging amount of the interlayer insulation layer in the region partitioned by the partition walls.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: December 29, 2020
    Assignee: JOLED INC.
    Inventors: Yasuhiro Tanaka, Noriteru Maeda, Kenichi Nendai, Masayuki Kubota
  • Patent number: 10879329
    Abstract: A semiconductor device includes a base, a first wiring line, a semiconductor film, a second wiring line, an insulating film, and a semiconductor auxiliary layer. The first wiring line is provided in the first, second, and third regions of the base. The semiconductor film has one or more low-resistance regions, is provided between the first wiring line and the base in the first region, and is in contact with the first wiring line in the second region. The second wiring line is in contact with the first wiring line in the third region. The insulating film is provided between the first wiring line and the semiconductor film in the first region. The semiconductor auxiliary layer is in contact with the semiconductor film at least in the first region, and assists electrical coupling via the first region.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: December 29, 2020
    Assignee: JOLED INC.
    Inventors: Tokuaki Kuniyoshi, Naoki Asano, Ryo Koshiishi, Hiroshi Fujimura
  • Publication number: 20200402462
    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: August 31, 2020
    Publication date: December 24, 2020
    Applicant: JOLED INC.
    Inventors: Hiroshi TAKAHARA, Hitoshi TSUGE
  • Patent number: 10872946
    Abstract: A display apparatus including: a display region provided with a plurality of pixel portions; wires installed to the respective pixel portions within the display region from an outside of the display region for transmitting a signal to drive the respective pixel portions; connection pads provided on the outside of the display region and serving as input portions to provide the wires with a signal while electrically conducting with the wires; switch elements provided on the outside of the display region in a middle of the wires; and a light shielding covering portion shielding the switch elements from light and formed to cover the connection pads while electrically conducting with the connection pads.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: December 22, 2020
    Assignee: JOLED, INC.
    Inventors: Shinya Tamonoki, Hiroshi Sagawa