Patents Assigned to Joled, Inc.
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Patent number: 10687445Abstract: A display apparatus is provided that includes a display panel, a plate-shaped base disposed on a rear surface side of the display panel, and a flexible wiring substrate. The display apparatus also includes a circuit substrate, an electronic component attached to at least one of the wiring substrate and the circuit substrate, and a heat conductive member attached to a rear surface of the electronic component. The display apparatus further includes a rear structural member disposed to cover the heat conductive member, and a connecting member that connects the base and the rear structural member and generates a compressive force that compresses the heat conductive member being sandwiched by the electronic component and the rear structural member.Type: GrantFiled: August 30, 2018Date of Patent: June 16, 2020Assignee: JOLED INC.Inventor: Kenichi Matsumoto
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Patent number: 10685601Abstract: A pixel circuit includes a driving transistor, a write transistor, a first switching transistor, a second switching transistor, a first storage capacitor, and a second storage capacitor. The driving transistor controls a current flowing in a light-emitting device. The write transistor controls application of a signal voltage to a gate of the driving transistor. The first switching transistor controls a gate voltage of the driving transistor upon correction operation that allows a gate-source voltage of the driving transistor to come close to a threshold voltage of the driving transistor. The second switching transistor is provided at a path between first and second terminals. The first storage capacitor is provided at a path between the gate of the driving transistor and the first terminal. The second storage capacitor is provided at a path between the gate of the driving transistor and the second terminal.Type: GrantFiled: January 4, 2019Date of Patent: June 16, 2020Assignee: JOLED INC.Inventor: Tetsuro Yamamoto
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Patent number: 10680197Abstract: A display device includes a display region, an organic insulating layer, a display element, and a moisture-ingress barrier. The organic insulating layer has a groove outside the display region. The organic insulating layer extends over the display region and a region outside the groove. The display element is disposed in the display region and includes, in order, a first electrode, an organic layer, and a second electrode. The organic layer includes one or more moisture-reacting layers. The moisture-ingress barrier is disposed in the groove of the organic insulating layer, includes a material identical to the material of the one or more moisture-reacting layers, and has a thickness greater than the thickness of the one or more moisture-reacting layers.Type: GrantFiled: June 26, 2018Date of Patent: June 9, 2020Assignee: JOLED INC.Inventors: Masanori Miura, Atsuhito Murai
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Patent number: 10680137Abstract: An electronic device including: a substrate; a first electrically-conductive layer; a second electrically-conductive layer; and an intermediate layer. The first electrically-conductive layer is disposed on the substrate and composed of aluminum or an aluminum alloy. The second electrically-conductive layer is spaced away from the first electrically-conductive layer. The intermediate layer is disposed between the first electrically-conductive layer and the second electrically-conductive layer, is in contact with both the first electrically-conductive layer and the second electrically-conductive layer, and contains aluminum and fluorine.Type: GrantFiled: February 19, 2015Date of Patent: June 9, 2020Assignee: JOLED INC.Inventor: Yuuki Abe
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Patent number: 10680047Abstract: An organic EL display panel including pixels arranged in a matrix includes: a substrate; pixel electrodes arranged above the substrate in the matrix; an insulating layer provided above the pixel electrodes and having openings for each pixel electrode; banks extending in a column direction and partitioning between the pixel electrodes in a row direction; organic functional layers provided above the pixel electrodes and including organic light emitting layers where organic electroluminescence occurs in the openings; and a light-transmissive counter electrode provided above the functional layers. The openings include: first openings arranged in line in the column direction; and a second opening adjacent to one of the first openings in the row direction. Portions of the insulating layer between the first openings adjacent in the column direction are lower in height relative to the pixel electrode than a portion of the insulating layer between the first opening and the second opening.Type: GrantFiled: January 25, 2019Date of Patent: June 9, 2020Assignee: JOLED INC.Inventors: Kenichi Nendai, Noriteru Maeda, Kenta Fukuoka
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Patent number: 10672838Abstract: An organic EL display panel including a substrate, an element array, a planarizing layer, light emitting layers, and a dummy light emitting layer. The element array is disposed above the substrate and includes a light emitting region and a peripheral region that does not emit light surrounding the light emitting region. The planarizing layer is disposed between the substrate and the element array so as to cover the substrate. The light emitting layers are present in the element array in the light emitting region and include organic light emitting material. The dummy light emitting layer is present in the element array in the peripheral region and includes organic light emitting material. A portion of the planarizing layer below the dummy light emitting layer is recessed, and a lower portion of the dummy light emitting layer extends inside the recessed portion.Type: GrantFiled: June 18, 2018Date of Patent: June 2, 2020Assignee: JOLED INC.Inventors: Toshiki Nishikiori, Noriteru Maeda, Toshio Fukuda
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Patent number: 10665806Abstract: An organic EL element includes an anode, a cathode opposing the anode, a light-emitting layer disposed between the anode and the cathode, an electron transport layer disposed in contact with a cathode-side surface of the light-emitting layer, and an electron injection layer disposed between the electron transport layer and the cathode, in contact with the electron transport layer. A difference between the lowest unoccupied molecular orbital (LUMO) level of the light-emitting layer and the LUMO level of the electron transport layer is at least 0.5 eV. The film thickness of the electron injection layer is greater than the film thickness of the electron transport layer.Type: GrantFiled: March 20, 2019Date of Patent: May 26, 2020Assignee: JOLED INC.Inventor: Kosuke Mishima
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Patent number: 10665812Abstract: There is provided an organic EL display panel having a substrate, a plurality of pixel electrodes arranged in a matrix pattern on the substrate, and a light-emitting layer formed on each pixel electrode. The organic EL display panel includes a power supply auxiliary electrode layer securing an electrode forming region which extends in a row direction or a column direction on at least one of gaps between pixel electrodes adjoining to each other on the substrate in the row or column direction and being formed so as not to come into contact with the pixel electrode adjoining to the electrode forming region, a functional layer configured to be formed so as to extend over the light-emitting layer and the power supply auxiliary electrode layer, and a common electrode layer configured to be formed so as to continuously extend on the functional layer.Type: GrantFiled: February 9, 2018Date of Patent: May 26, 2020Assignee: JOLED INC.Inventors: Hiroyuki Ajiki, Masaki Nishimura
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Patent number: 10665614Abstract: A display panel includes a substrate, a display element, a plurality of pixels arranged in a matrix, a drive circuit that drives the display element, a switching transistor in each of the plurality of pixels and selectively performs switching on the pixel that is to be caused to emit light, a first drive transistor in each of the plurality of pixels and drives a light-emitting element in the pixel, and a second drive transistor in the drive circuit. The switching transistor that is in each of the plurality of pixels, the first drive transistor that is in each of the plurality of pixels, and the second drive transistor in the drive circuit include oxide semiconductors. The switching transistor in each of the plurality of pixels and the second drive transistor in the drive circuit have a higher mobility than the first drive transistor in each of the plurality of pixels.Type: GrantFiled: March 1, 2019Date of Patent: May 26, 2020Assignee: JOLED INC.Inventor: Hiroshi Hayashi
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Publication number: 20200162704Abstract: A method for driving a display panel displays a video image signal that includes a plurality of images having different frame periods. The method includes setting a frame period including one or more light emission periods, and one or more light extinction periods. The method also includes dividing at least one frame period into a plurality of light emission periods and a plurality of light extinction periods, and adjusting lengths of the plurality of light emission periods and lengths of the plurality of light extinction periods based on a ratio between a maximum frequency of the frame period and a currently set frequency of the frame period. The method further includes displaying the video image signal by causing light emitting elements of the display panel to emit light during the adjusted light emission periods, and to extinguish light during the adjusted light extinction periods.Type: ApplicationFiled: January 21, 2020Publication date: May 21, 2020Applicant: JOLED INC.Inventor: Hiroaki ISHII
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Patent number: 10658629Abstract: Disclosed is an organic electroluminescent element including a first electrode, a hole transport layer, a light emitting layer, an electron transport layer and a second electrode in this order. The light emitting layer has a first light emitting layer including a coating film on the hole transport layer side, and has a second light emitting layer including a vapor-deposited film on the electron transport layer side.Type: GrantFiled: June 8, 2018Date of Patent: May 19, 2020Assignee: JOLED INC.Inventors: Kazuhiro Yoneda, Noriyuki Matsusue
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Publication number: 20200150722Abstract: A display unit which can realize reduction in thickness and weight of the display unit by omitting a void between a touch panel and a display panel, and its manufacturing method. Whole faces of the touch panel and the display panel are directly bonded together with an adhesive layer in between. The display panel has a structure wherein a driving substrate in which organic light emitting devices are formed and a sealing substrate are bonded together with an adhesive layer in between.Type: ApplicationFiled: January 16, 2020Publication date: May 14, 2020Applicant: JOLED Inc.Inventor: Yuichi Iwase
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Publication number: 20200152906Abstract: An organic electroluminescent device includes, in order, a first electrode, a light-emitting layer, a resistive layer, and a second electrode. The resistive layer has a specific resistance within a range of 1×104?·cm or greater and 5×106?·m or less and includes a mixed material including two or more of zinc oxide, gallium oxide, and silicon dioxide and having a composition ratio within a predetermined range.Type: ApplicationFiled: November 6, 2019Publication date: May 14, 2020Applicant: JOLED INC.Inventors: Shina KIRITA, Takayuki SHIMAMURA, Naoto ODA
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Patent number: 10644092Abstract: A display panel includes a contact area which includes an upper conductive layer forming first electrodes of the organic EL elements, a lower conductive layer disposed below the upper conductive layer, a middle layer between the upper conductive layer and the lower conductive layer, and an insulating layer between the lower conductive layer and the middle layer. The middle layer includes a first area and a second area which are conductive and electrically connected to the upper conductive layer, and an insulating separating area which separates the first area and the second area. The lower conductive layer includes a first line which is electrically connected to the first area via a first contact hole, and a second line which is electrically connected to the second area via a second contact hole.Type: GrantFiled: August 2, 2018Date of Patent: May 5, 2020Assignee: JOLED INC.Inventors: Kenji Kokuda, Masafumi Matsui, Hitoshi Tsuge, Takashi Osako, Shigeo Homura, Ryoichi Yasuda
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Patent number: 10644082Abstract: An organic EL element includes a planarized layer arranged on a substrate, an insulation layer which is arranged on the planarized layer with the region corresponding to a subpixel of the planarized layer left exposed at least partly, a pixel electrode which has an opening that defines the region corresponding to the subpixel and which is arranged on a bank arranged on the insulation layer and on the exposed part of the planarized layer, a transparent conductive layer arranged on the pixel electrode, an emission layer arranged in the opening and above at least the transparent conductive layer, and a counter electrode arranged above the emission layer. The insulation layer is interposed between a bottom of the bank and the planarized layer. An upper surface of the planarized layer is coated with at least one of the pixel electrode and the insulation layer.Type: GrantFiled: October 2, 2017Date of Patent: May 5, 2020Assignee: JOLED INC.Inventors: Kazuhiro Yokota, Hideyuki Shirahase, Takahiro Komatsu, Masaki Nishimura
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Patent number: 10644085Abstract: A method of manufacturing a self-luminous display panel, includes: preparing a substrate; forming banks above the substrate; detecting a bank having a defect portion; determining, with respect to the detected bank, only one of two adjacent spaces as a repair target space; forming a dam structure in the repair target space; and forming light-emitting layers. The banks are elongated and extend in a column direction, and are arranged in a row direction with spaces therebetween. The two adjacent spaces are each located between the detected bank and an adjacent bank. The dam structure is located within a predetermined distance from the defect portion, and at least partially surrounds the defect portion or is composed of a pair of dam elements disposed with the defect portion therebetween in the column direction. The light-emitting layers are formed by applying inks to the spaces between the banks. The inks contain self-luminous materials.Type: GrantFiled: August 28, 2018Date of Patent: May 5, 2020Assignee: JOLED INC.Inventor: Tetsuro Kondo
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Patent number: 10644093Abstract: A display unit includes a first substrate, a transistor, first and second wiring layers, and an insulating film. The first substrate is provided with a display region and a peripheral region. The transistor is provided in the display region, and includes a semiconductor layer, a gate electrode facing the semiconductor layer, a gate insulating film between the gate electrode and the semiconductor layer, and a source-drain electrode electrically coupled to the semiconductor layer. The first wiring layer is provided in the peripheral region, electrically coupled to the transistor, and disposed closer to the first substrate than the same layer as the gate electrode and the source-drain electrode. The second wiring layer is provided on the first substrate and has an electric potential different from the first wiring layer. The insulating film is provided between the second wiring layer and the first wiring layer.Type: GrantFiled: August 27, 2018Date of Patent: May 5, 2020Assignee: JOLED INC.Inventors: Atsuhito Murai, Yasuhiro Terai, Takashi Maruyama, Yoshihiro Oshima, Motohiro Toyota, Ryosuke Ebihara, Yasunobu Hiromasu
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Patent number: 10644165Abstract: A method of fabricating a thin-film transistor is provided. In the method, an oxide semiconductor layer is formed above a substrate. A gate insulating layer is formed above the oxide semiconductor layer. A gate electrode is formed above the gate insulating layer. A metal oxide layer is formed on the oxide semiconductor layer by reactive sputtering to reduce a resistance of the oxide semiconductor layer in a region in contact with the metal oxide layer.Type: GrantFiled: July 6, 2018Date of Patent: May 5, 2020Assignee: JOLED INC.Inventors: Emi Kobayashi, Arinobu Kanegae, Yusuke Fukui
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Publication number: 20200136078Abstract: An organic electroluminescence element includes an anode, an organic light emitting layer disposed on an upper side of the anode, a first functional layer disposed over the organic light emitting layer and including NaF, a second functional layer disposed over the first functional layer and including an organic material containing Yb, and a cathode disposed on an upper side of the second functional layer. A method of manufacturing an organic electroluminescence element, includes forming an anode, forming an organic light emitting layer on an upper side of the anode, forming a first functional layer including NaF over the organic light emitting layer, forming a second functional layer including an organic material containing Yb over the first functional layer, and forming a cathode on an upper side of the second functional layer.Type: ApplicationFiled: October 24, 2019Publication date: April 30, 2020Applicant: JOLED Inc.Inventors: Kosuke MISHIMA, Koyo SAKAMOTO, Muneharu SATO
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Publication number: 20200135103Abstract: 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: ApplicationFiled: December 13, 2019Publication date: April 30, 2020Applicant: JOLED INC.Inventors: Hiroshi TAKAHARA, Hitoshi TSUGE