Patents Assigned to Joled, Inc.
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Publication number: 20210376247Abstract: A compound of formula (7) is provided wherein L4 is a linking group selected from the group consisting of: provided that an asterisk (*) indicates the position bonding to the nitrogen atom of the carbazolyl group, R6 to R13 are independently a hydrogen atom, or a phenyl group, Ar17 is an unsubstituted phenylphenyl group, and Ar18 is a phenylphenyl group which may be substituted by a phenyl group or a naphthyl group, or a phenyl group which may be substituted by a naphthyl group.Type: ApplicationFiled: August 9, 2021Publication date: December 2, 2021Applicants: Idemitsu Kosan Co., Ltd., JOLED Inc.Inventors: Masahiro KAWAMURA, Emiko KAMBE, Akifumi NAKAMURA, Yasunori KIJIMA, Tadahiko YOSHINAGA, Shigeyuki MATSUNAMI
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Patent number: 11189735Abstract: A semiconductor device includes a gate electrode, a semiconductor film, and a conductive film. The semiconductor film includes an oxide semiconductor material. The semiconductor film includes a channel region, a low-resistance region, and an intermediate region. The channel region is opposed to the gate electrode. The low-resistance region has a lower electric resistance than the channel region. The intermediate region is provided between the low-resistance region and the channel region. The conductive film is provided selectively in contact with the low-resistance region of the semiconductor film.Type: GrantFiled: January 8, 2020Date of Patent: November 30, 2021Assignee: JOLED INC.Inventors: Hiroshi Hayashi, Naoki Asano, Ryo Koshiishi
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Publication number: 20210343968Abstract: 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: July 12, 2021Publication date: November 4, 2021Applicant: JOLED Inc.Inventors: Kosuke MISHIMA, Koyo SAKAMOTO, Muneharu SATO
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Publication number: 20210343985Abstract: A display unit including a first substrate and a second substrate that are disposed to face each other, a first organic insulating layer on the first substrate, a plurality of light-emitting elements arrayed in a display region, the display region on the first organic insulating layer and facing the second substrate and a first moisture-proof film covering the first organic insulating layer in a peripheral region, in which the peripheral region is provided on the first substrate and surrounds the display region.Type: ApplicationFiled: July 19, 2021Publication date: November 4, 2021Applicant: JOLED Inc.Inventors: Takatoshi Saito, Kenichi Izumi, Shinichi Teraguchi, Tadakatsu Nakadaira, Mikihiro Yokozeki, Shota Nishi, Manabu Kodate
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Patent number: 11164521Abstract: A pixel circuit includes: a driver transistor that supplies a current dependent on a voltage supplied via a signal line; a write transistor connected between the signal line and a gate electrode of the driver transistor; a first organic EL element connected to one electrode of the driver transistor, the one electrode being one of a drain electrode and a source electrode of the driver transistor; a switching transistor connected to the one electrode of the driver transistor; and a second organic EL element connected to the one electrode of the driver transistor via the switching transistor. The pixel circuit performs mobility correction that corrects a mobility of the driver transistor. The switching transistor turns ON after a write operation that writes the voltage supplied via the signal line and turns OFF before an operation that performs the mobility correction of the driver transistor begins.Type: GrantFiled: August 27, 2020Date of Patent: November 2, 2021Assignee: JOLED INC.Inventor: Tetsuro Yamamoto
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Patent number: 11164520Abstract: A light emitting display panel includes a plurality of pixel circuits arranged in a matrix. Each of the plurality of pixel circuits includes a light emitting element, a capacitor that is connected to a gate of a drive transistor and the light emitting element, a first switch transistor that is connected to a first electrode of the capacitor, a first wire that is connected to the first electrode of the capacitor via the first switch transistor, a second switch transistor that is connected to a second electrode of the capacitor and the light emitting element, and a second wire that is connected to the second electrode of the capacitor via the second switch transistor. A voltage of the first wire and a voltage of the second wire are the same during a power off operation or during a non-light emission period.Type: GrantFiled: October 11, 2019Date of Patent: November 2, 2021Assignee: JOLED INC.Inventor: Hitoshi Tsuge
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Publication number: 20210335243Abstract: A display apparatus includes pixels two-dimensionally arranged. Each of the pixels includes a light-emitting element, a capacitor which retains a voltage of a data signal, a drive transistor which feeds a current according to the voltage of the data signal to the light-emitting element, a first write transistor connected between a data signal line and a gate electrode of the drive transistor, a second write transistor connected between the first write transistor and a gate electrode of the drive transistor, and a counter transistor including a source electrode and a drain electrode, one of the source electrode and the drain electrode being connected between the first write transistor and the second write transistor. The other of the source electrode and the drain electrode of the counter transistor is connected to a counter voltage line which feeds a counter voltage.Type: ApplicationFiled: April 16, 2021Publication date: October 28, 2021Applicant: JOLED INC.Inventor: Masanori OHARA
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Publication number: 20210335244Abstract: A display device includes a pixel circuit that includes a light emitting element; and a control circuit that controls light emission of the light emitting element via the pixel circuit. The pixel circuit includes a drive transistor circuit that is driven to supply a pixel current to the light emitting element, and the drive transistor circuit includes a first drive transistor that is a polysilicon semiconductor transistor and a second drive transistor that is an oxide semiconductor transistor.Type: ApplicationFiled: April 22, 2021Publication date: October 28, 2021Applicant: JOLED INC.Inventor: Masanori OHARA
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Patent number: 11158252Abstract: A circuit board includes: a power supply wiring board that includes a power supply circuit that outputs the power supply voltage, and a first power supply line and a second power supply line which are connected with the power supply circuit; a first wiring board that includes a first line; a second wiring board that includes a second line; a first cable that includes a first conductor that connects the first power supply line and the first line; a second cable that includes a second conductor that connects the second power supply line and the second line; and a short-circuit conductor that short-circuits the first line and the second line. An electrical length of a route from the power supply circuit to the first wiring board is shorter than an electrical length of a route from the power supply circuit to the second wiring board.Type: GrantFiled: June 28, 2019Date of Patent: October 26, 2021Assignee: JOLED INC.Inventor: Yutaka Nakano
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Patent number: 11152447Abstract: According to one embodiment, a display device includes a pixel area including pixels each including at least one thin film transistor includes a semiconductor layer and a gate electrode, a first terminal area including a first wiring line disposed thereon connected to the at least one thin film transistor, a first protective film provided on the semiconductor layer, the gate electrode and the first wiring line, a first insulating film provided on the first protective film, a second protective film provided on the first insulating film, a second insulating film provided on the second protective film, a first opening formed in the first terminal area, and partially exposing the first wiring line, and a second opening formed to correspond to the first opening.Type: GrantFiled: March 8, 2019Date of Patent: October 19, 2021Assignee: JOLED INC.Inventors: Atsuhito Murai, Eiichi Sato, Masanori Miura
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Patent number: 11152574Abstract: A compound of formula (9) is provided. wherein, B1 and B2 are a methyl group, Z1 and Z2 are a hydrogen atom, X1 is an N-carbazolyl group, X2 is a —NAr21?Ar22? group, Ar21? is a 2-phenylphenyl group, a 3-phenylphenyl group, or a 4-phenylphenyl group, and Ar22? is a 1-naphthyl group, a 2-naphthyl group, a 2-phenylphenyl group, a 3-phenylphenyl group, a 4-phenylphenyl group, a 2-fluorenyl group, a 9,9-dimethyl-2-fluorenyl group or a phenanthryl group. Also provided is an organic electroluminescent device comprising a compound of formula (9).Type: GrantFiled: November 30, 2020Date of Patent: October 19, 2021Assignees: Idemitsu Kosan Co., Ltd., JOLED Inc.Inventors: Masahiro Kawamura, Emiko Kambe, Akifumi Nakamura, Yasunori Kijima, Tadahiko Yoshinaga, Shigeyuki Matsunami
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Patent number: 11127762Abstract: A semiconductor device includes a semiconductor film, a semiconductor auxiliary film, a wiring line, a first metal film, and an interlayer insulating film. The semiconductor film includes a channel region and a low-resistance region. The semiconductor film includes indium and oxygen. The semiconductor auxiliary film is in contact with the low-resistance region of the semiconductor film and reduces the electric resistance of the semiconductor film. The wiring line is electrically coupled to the low-resistance region of the semiconductor film. The first metal film covers the wiring line and has a higher standard electrode potential than the indium. The interlayer insulating film covers the semiconductor film with the first metal film interposed therebetween. The interlayer insulating film has a first hole and a second hole. The first hole is provided at a position opposed to the low-resistance region of the semiconductor film. The second hole reaches the first metal film.Type: GrantFiled: July 22, 2019Date of Patent: September 21, 2021Assignee: JOLED INC.Inventors: Eri Matsuo, Yasuhiro Terai
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Publication number: 20210288287Abstract: A display includes a display panel, a shock dispersion layer, a strain relaxation layer, and a shock absorption layer. The shock dispersion layer is provided on a light-extraction side of the display panel and has a Young's modulus of 50 GPa or greater. The strain relaxation layer is provided between the shock dispersion layer and the display panel and has a Young's modulus lower than the Young's modulus of the shock dispersion layer. The shock absorption layer is provided between the strain relaxation layer and the display panel and has a storage modulus of 10 kPa or greater and 1 MPa or less at a room temperature.Type: ApplicationFiled: March 15, 2021Publication date: September 16, 2021Applicant: JOLED INC.Inventors: Takahiro SEKI, Katsumasa YAMAZAKI
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Patent number: 11108029Abstract: A method of manufacturing an organic electroluminescence display panel including: preparing a substrate; forming pixel electrodes arranged in a matrix above the substrate; forming parallel column banks above the substrate in spaces between the pixel electrodes in a row direction; forming functional layers including organic light emitting layers in gaps between the column banks, including causing relative motion in the row direction between the substrate and a head provided with nozzles arranged along a column direction while ejecting ink from selected nozzles among the nozzles to supply a set of the gaps with an ink including an organic material; and forming a counter electrode above the functional layers. Among the set of the gaps, nozzle patterns of the selected nozzles for a gap differ between a first gap and a second gap in a sequence in the row direction of the set.Type: GrantFiled: November 11, 2019Date of Patent: August 31, 2021Assignee: JOLED INC.Inventors: Yoshiaki Kondo, Toshiki Nishikiori
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Patent number: 11107403Abstract: A current limiting circuit includes: a gain calculation circuit which calculates a screen power value based on pixel values and calculates a gain based on the screen power value; and a gain multiplication circuit which multiplies the pixel values by the gain, and when a maximum value of the pixel values exceeds a first threshold value, the gain calculation circuit calculates the screen power value by use of a common pixel value greater than or equal to the maximum value instead of the pixel values, and when the screen power value exceeds a control target power value, the gain calculation circuit sets the gain to a ratio of the control target power value with respect to the screen power value, and when the screen power value is less than or equal to the control target power value, the gain calculation circuit sets the gain to 1.Type: GrantFiled: September 21, 2020Date of Patent: August 31, 2021Assignee: JOLED INC.Inventor: Toshiyuki Kato
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Patent number: 11100859Abstract: A processing circuit processes video signals for a display device which includes a display panel including pixels each having a self light emitting element and a current limiting circuit limiting a current to the pixels. The processing circuit includes: a frame memory storing video signals of a previous frame; and a signal processer which: compares a luminance represented by a video signal of the current frame corresponding to a pixel and a luminance represented by a video signal of the previous frame corresponding to the pixel; outputs the video signal of the current frame in a case where the luminance represented by the video signal of the current frame is equal to or smaller than the luminance represented by the video signal of the previous frame or equal to or smaller than a predetermined threshold value; and outputs a weighted average of the video signal of the current frame and the video signal of the previous frame in any other case.Type: GrantFiled: January 28, 2020Date of Patent: August 24, 2021Assignee: JOLED INC.Inventor: Toshiyuki Kato
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Patent number: 11094888Abstract: An organic electroluminescent device including: an anode, a cathode, an emitting layer formed of an organic compound and interposed between the cathode and the anode, and two or more layers provided in a hole-injecting/hole-transporting region between the anode and the emitting layer; of the layers which are provided in the hole-injecting/hole-transporting region, a layer which is in contact with the emitting layer containing a compound represented by the formula (1); and of the layers which are provided in the hole-injecting/hole-transporting region, a layer which is interposed between the anode and the layer which is in contact with the emitting layer containing an amine derivative represented by the formula (2).Type: GrantFiled: October 4, 2017Date of Patent: August 17, 2021Assignees: Idemitsu Kosan Co., Ltd., JOLED Inc.Inventors: Masahiro Kawamura, Emiko Kambe, Akifumi Nakamura, Yasunori Kijima, Tadahiko Yoshinaga, Shigeyuki Matsunami
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Patent number: 11081591Abstract: A semiconductor device includes a substrate, a first semiconductor auxiliary film, a semiconductor film, a gate insulating film, and a gate electrode. The first semiconductor auxiliary film is provided in a selective region on the substrate. The semiconductor film includes an oxide semiconductor material, and has a low-resistive region in contact with the first semiconductor auxiliary film and a channel region provided in a portion different from the low-resistive region. The gate insulating film covers the semiconductor film from the channel region to at least part of the low-resistive region. The gate electrode is opposed to the channel region of the semiconductor film via the gate insulating film.Type: GrantFiled: January 8, 2020Date of Patent: August 3, 2021Assignee: JOLED INC.Inventor: Yasuhiro Terai
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Patent number: 11081675Abstract: A display unit includes a plurality of pixels and a first insulating film. The plurality of pixels are arranged in matrix in a first direction and a second direction. The first insulating film is provided between adjacent pixels of the pixels, and has first openings in light-emitting regions of the respective pixels. The first insulating film has, between pixels adjacent in the second direction of the pixels, a second opening extending in the first direction, and a remaining part inside the second opening.Type: GrantFiled: April 20, 2017Date of Patent: August 3, 2021Assignee: JOLED INC.Inventors: Kazuma Teramoto, Kenichi Nendai, Jiro Yamada, Hideki Kobayashi
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Patent number: 11069293Abstract: A luminance controlling unit includes a luminance controller that controls luminance of a pixel array including pixels each including a current-driven self-luminescent element. The luminance controller performs, on the basis of an image signal, a dynamic control of a duty ratio of a voltage pulse and a potential difference between a first voltage and a second voltage. The first voltage is outputted from a first voltage source adjacent to an anode of the corresponding self-luminescent element, and the second voltage is outputted from a second voltage source adjacent to a cathode of the corresponding self-luminescent element. The duty ratio is directed to controlling of light emission and light extinction of the self-luminescent element.Type: GrantFiled: July 30, 2018Date of Patent: July 20, 2021Assignee: JOLED Inc.Inventors: Hiroaki Ishii, Teppei Isobe