Patents by Inventor Tomona Yamaguchi

Tomona Yamaguchi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 12063800
    Abstract: A photoelectric conversion element that reduces a residual image while enhancing heat resistance and includes a first electrode; a photoelectric conversion layer; a first interfacial layer; and a second electrode in this order, the photoelectric conversion layer has a quantum dot, the quantum dot is a PbS quantum dot, the first interfacial layer has an organic compound having a glass transition temperature of 100° ° C. or higher, and the following Equation (1) is met: ?hEBL?1.0×10?3 (cm2/Vs) . . . (1), where ?hEBL denotes hole mobility of the first interfacial layer.
    Type: Grant
    Filed: April 1, 2021
    Date of Patent: August 13, 2024
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tomona Yamaguchi, Takayuki Sumida
  • Publication number: 20240268134
    Abstract: The present disclosure discloses a photoelectric conversion element in which dark current is reduced, wherein the photoelectric conversion element includes a first electrode, a second electrode, and a photoelectric conversion layer disposed between the first electrode and the second electrode and including quantum dots, which include nanoparticles and a protective ligand, wherein the nanoparticles contain at least two elements selected from the group consisting of group 11 elements, group 12 elements, group 13 elements, group 14 elements, group 15 elements, and group 16 elements, and the protective ligand includes a cationic ligand and an anionic ligand, and the cationic ligand and the anionic ligand both have a molecular weight of 250 or less.
    Type: Application
    Filed: January 16, 2024
    Publication date: August 8, 2024
    Inventor: TOMONA YAMAGUCHI
  • Patent number: 11997858
    Abstract: An organic EL device includes at least an anode, a first light-emitting layer, an intermediate layer, a second light-emitting layer, and a cathode in this order. The intermediate layer is adjacent to the first light-emitting layer and the second light-emitting layer. The first light-emitting layer and the second light-emitting layer can trap electrons. A material constituting the intermediate layer is a hydrocarbon that has a HOMO level equal to or lower than the HOMO level of a host of the first light-emitting layer and that has a high S1 level.
    Type: Grant
    Filed: December 31, 2020
    Date of Patent: May 28, 2024
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Hirokazu Miyashita, Itaru Takaya, Takayuki Ito, Moe Takahira, Tomona Yamaguchi, Satoru Shiobara, Tomokazu Kotake, Haruna Iida, Naoki Yamada, Jun Kamatani
  • Patent number: 11895910
    Abstract: Provided is an organic compound represented by the following general formula [1], the compound having an absorption peak in a long wavelength region: where Ar1 and Ar2 each represent an aryl group having 6 or more and 18 or less carbon atoms or the like, R1 and R2 each represent an alkyl group or the like, R3 represents a hydrogen atom or the like, Y1 to Y3 are each independently selected from a methine group and a nitrogen atom, R4 represents a substituent represented by the general formula [1-1] or the like, and R5 represents a hydrogen atom or a substituent.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: February 6, 2024
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yosuke Nishide, Naoki Yamada, Hiroki Ohrui, Hironobu Iwawaki, Hirokazu Miyashita, Tomona Yamaguchi, Jun Kamatani
  • Publication number: 20230389342
    Abstract: A photoelectric conversion element includes a first electrode, a first interfacial layer, a photoelectric conversion layer, and a second electrode in this order, wherein the photoelectric conversion layer includes quantum dots and a first organic compound, the first organic compound satisfies Formula (1), an electron affinity of a material used for the first interfacial layer, an electron affinity of the quantum dots, and an electron affinity of the first organic compound satisfy Formulas (2) and (3): E2>E1??(1) E1 [eV]: energy at short-wavelength end of optical wavelength region detected by the photoelectric conversion element E2 [eV]: band gap of the first organic compound E3<E4?0.2??(2) E4?0.4<E5<E4??(3) E3 [eV]: electron affinity of material used for the first interfacial layer E4 [eV]: electron affinity of the quantum dots E5 [eV]: electron affinity of the first organic compound.
    Type: Application
    Filed: May 24, 2023
    Publication date: November 30, 2023
    Inventor: TOMONA YAMAGUCHI
  • Publication number: 20230375722
    Abstract: A radiation detector comprising: a pixel array in which pixels each having a radiation detection element configured to convert radiation into charges and an amplification transistor configured to amplify a signal from the radiation detection element and output the amplified signal are arrayed in a matrix shape; and signal wiring provided for each pixel column, wherein a pixel isolation structure formed to surround the radiation detection element in a plan view is provided, and the amplification transistor is arranged inside a region defined by the pixel isolation structure in a plan view.
    Type: Application
    Filed: May 10, 2023
    Publication date: November 23, 2023
    Inventors: KAZUTAKA OSAWA, TAKANORI WATANABE, TOMONA YAMAGUCHI
  • Publication number: 20230378228
    Abstract: A radiation detector comprising: a pixel array in which pixels each having a radiation detection element configured to convert radiation into charges and an amplification transistor configured to amplify a signal from the radiation detection element and output the amplified signal are arrayed in a matrix shape; and signal wiring provided for each pixel column, wherein the signal wiring does not overlap an active layer, in which the amplification transistor is arranged, in a plan view.
    Type: Application
    Filed: May 12, 2023
    Publication date: November 23, 2023
    Inventors: KAZUTAKA OSAWA, TAKANORI WATANABE, TOMONA YAMAGUCHI
  • Publication number: 20220238824
    Abstract: A photoelectric conversion element including a first electrode, a photoelectric conversion layer, and a second electrode, in this order, wherein the photoelectric conversion layer contains a quantum dot and an organic compound, satisfies formula (1), a predetermined carrier mobility, and a predetermined energy level, and reduces a residual image, E2>E1 formula (1). E1 (eV) is the energy at a short-wavelength edge in a wavelength region of light detected by the photoelectric conversion element. E2 (eV) is the band gap of the organic compound.
    Type: Application
    Filed: January 12, 2022
    Publication date: July 28, 2022
    Inventor: Tomona Yamaguchi
  • Publication number: 20210313531
    Abstract: A photoelectric conversion element that reduces a residual image while enhancing heat resistance and includes a first electrode; a photoelectric conversion layer; a first interfacial layer; and a second electrode in this order, the photoelectric conversion layer has a quantum dot, the quantum dot is a PbS quantum dot, the first interfacial layer has an organic compound having a glass transition temperature of 100° C. or higher, and the following Equation (1) is met: ?hEBL?1.0×10?3 (cm2/Vs) . . . (1), where ?hEBL denotes hole mobility of the first interfacial layer.
    Type: Application
    Filed: April 1, 2021
    Publication date: October 7, 2021
    Inventors: Tomona Yamaguchi, Takayuki Sumida
  • Patent number: 11128791
    Abstract: Provided is a photoelectric conversion element including an anode, a photoelectric conversion layer that contains a first organic semiconductor, a second organic semiconductor, and a third organic semiconductor, and a cathode. As each of the first organic semiconductor, the second organic semiconductor, and the third organic semiconductor, a low-molecular weight organic semiconductor is used. The first organic semiconductor, the second organic semiconductor, and the third organic semiconductor have mass ratios that satisfy the following relationship: the first organic semiconductor?the second organic semiconductor?the third organic semiconductor. Further, when a total amount of the first organic semiconductor, the second organic semiconductor, and the third organic semiconductor is 100 mass %, a content of the second organic semiconductor is 6 mass % or more, and a content of the third organic semiconductor is 3 mass % or more.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: September 21, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Tetsuo Takahashi, Satoru Shiobara, Jun Kamatani, Naoki Yamada, Tomona Yamaguchi, Hiroki Ohrui, Hironobu Iwawaki, Masumi Itabashi, Yosuke Nishide, Hirokazu Miyashita, Norifumi Kajimoto, Moe Takahira, Isao Kawata, Yuto Ito
  • Patent number: 11121182
    Abstract: An organic photoelectric conversion element includes an electron-collecting electrode, a hole-collecting electrode, and a photoelectric conversion portion which is disposed between the electron-collecting electrode and the hole-collecting electrode. The photoelectric conversion portion includes a first organic compound layer. A second organic compound layer is disposed between the hole-collecting electrode and the photoelectric conversion portion. The first organic compound layer contains a first compound having at least a fullerene skeleton and a second compound having a fluoranthene skeleton.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: September 14, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Jun Kamatani, Naoki Yamada, Hiroki Ohrui, Kengo Kishino, Hironobu Iwawaki, Satoru Shiobara, Tomona Yamaguchi, Masumi Itabashi, Yosuke Nishide, Hirokazu Miyashita
  • Publication number: 20210242416
    Abstract: A semiconductor device includes an anode, a cathode, a first functional layer between the anode and cathode, and a second functional layer between the first functional layer and the cathode. The first functional layer contains a first quantum dot having a first ligand, and the second functional layer contains a second quantum dot having a second ligand different from the first ligand. The second ligand is an aromatic compound having a sulfide bond and an ester bond.
    Type: Application
    Filed: January 28, 2021
    Publication date: August 5, 2021
    Inventors: Takayuki Sumida, Akira Shimazu, Takahiro Yajima, Tomona Yamaguchi
  • Publication number: 20210126214
    Abstract: An organic EL device includes at least an anode, a first light-emitting layer, an intermediate layer, a second light-emitting layer, and a cathode in this order. The intermediate layer is adjacent to the first light-emitting layer and the second light-emitting layer. The first light-emitting layer and the second light-emitting layer can trap electrons. A material constituting the intermediate layer is a hydrocarbon that has a HOMO level equal to or lower than the HOMO level of a host of the first light-emitting layer and that has a high S1 level.
    Type: Application
    Filed: December 31, 2020
    Publication date: April 29, 2021
    Inventors: Hirokazu Miyashita, Itaru Takaya, Takayuki Ito, Moe Takahira, Tomona Yamaguchi, Satoru Shiobara, Tomokazu Kotake, Haruna Iida, Naoki Yamada, Jun Kamatani
  • Patent number: 10978644
    Abstract: The present disclosure provides an organic compound expressed by the following General Formula 1: In General Formula 1, a partial structure Z1 represents a condensed polycyclic group that may include a nitrogen atom in a skeleton, and that includes at least one of a five-membered ring and a six-membered ring. The partial structure Z1 may include, as a substituent, a carbonyl group, a dicyanovinylidene group, a halogen atom, a cyano group, an alkyl group, an alkoxy group, an aromatic heterocyclic group, or an aryl group. R1 and R2 represent an alkyl group, aryl group, an aromatic heterocyclic group, a halogen group, or a cyano group. Ar1 represents an arylene group or a divalent aromatic heterocyclic group, and Ar2 and Ar3 represent an aryl group or an aromatic heterocyclic group. n represents an integer of 1 to 4.
    Type: Grant
    Filed: January 9, 2019
    Date of Patent: April 13, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Naoki Yamada, Jun Kamatani, Hiroki Ohrui, Hironobu Iwawaki, Masumi Itabashi, Yosuke Nishide, Hirokazu Miyashita, Satoru Shiobara, Tomona Yamaguchi, Tetsuo Takahashi
  • Patent number: 10947212
    Abstract: The present invention provides an organic compound represented by general formula [1] described in claims. In general formula [1], Ar1 and Ar2 are each independently selected from an aryl group and a heteroaryl group. In general formula [1], R1 to R3 are each a hydrogen atom or a substituent. R4 is an electron-withdrawing substituent. X1 is oxygen or sulfur. Y1 to Y3 are each independently selected from a carbon atom and a nitrogen atom.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: March 16, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yosuke Nishide, Naoki Yamada, Hiroki Ohrui, Hironobu Iwawaki, Satoru Shiobara, Tomona Yamaguchi, Tetsuo Takahashi, Masumi Itabashi, Hirokazu Miyashita, Jun Kamatani
  • Patent number: 10854821
    Abstract: Provided is an organic light emitting device having high emission efficiency and a long continuous driving lifetime. The organic light emitting device includes: an anode; a cathode; and an emitting layer placed between the anode and the cathode, in which: the emitting layer contains an emitting material that emits fluorescence; and in an emission wavelength region of the emitting material, an absorption peak of an absorption spectrum in a minimum excited triplet state of a material having a smallest minimum excited triplet energy out of constituent materials in the emitting layer is absent.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: December 1, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Kenichi Ikari, Hiroki Ohrui, Yojiro Matsuda, Haruna Iida, Masumi Itabashi, Kei Tagami, Tetsuo Takahashi, Satoru Shiobara, Tomona Yamaguchi
  • Patent number: 10840470
    Abstract: One embodiment of this invention has a first electrode, a first light emitting layer, and a second electrode, in which the first light emitting layer has a first host material and a first dopant material, a lowest triplet excitation energy of the first host material is higher than a lowest triplet excitation energy of the first dopant material, and, when a weight of the first light emitting layer is set to 100 wt %, a concentration of the first dopant material is 0.3 wt % or less.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: November 17, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Tetsuo Takahashi, Satoru Shiobara, Koichi Ishige, Tomona Yamaguchi, Koji Ishizuya, Takayuki Ito, Norifumi Kajimoto
  • Publication number: 20190364191
    Abstract: Provided is a photoelectric conversion element including an anode, a photoelectric conversion layer that contains a first organic semiconductor, a second organic semiconductor, and a third organic semiconductor, and a cathode. As each of the first organic semiconductor, the second organic semiconductor, and the third organic semiconductor, a low-molecular weight organic semiconductor is used. The first organic semiconductor, the second organic semiconductor, and the third organic semiconductor have mass ratios that satisfy the following relationship: the first organic semiconductor?the second organic semiconductor?the third organic semiconductor. Further, when a total amount of the first organic semiconductor, the second organic semiconductor, and the third organic semiconductor is 100 mass %, a content of the second organic semiconductor is 6 mass % or more, and a content of the third organic semiconductor is 3 mass % or more.
    Type: Application
    Filed: July 26, 2019
    Publication date: November 28, 2019
    Inventors: Tetsuo Takahashi, Satoru Shiobara, Jun Kamatani, Naoki Yamada, Tomona Yamaguchi, Hiroki Ohrui, Hironobu Iwawaki, Masumi Itabashi, Yosuke Nishide, Hirokazu Miyashita, Norifumi Kajimoto, Moe Takahira, Isao Kawata, Yuto Ito
  • Publication number: 20190345517
    Abstract: A genome editing kit includes a viral envelope, a Cas9 protein, a surfactant, and at least one positively charged substance selected from the group consisting of protamine sulfate, polyarginine, polylysine, polyethyleneimine, and hexadimethrine bromide. A genome editing composition includes a viral envelope, a Cas9 protein, a guide RNA, and a positively charged substance. A genome editing method and a method for producing a genome-edited cell or organism include the step of bringing a viral envelope, a Cas9 protein, a guide RNA, and a positively charged substance into contact with a cell or organism. The genome editing kit etc. are capable of editing genomes of cells (e.g., immune cells (strain)) that are conventionally difficult to transfect.
    Type: Application
    Filed: March 25, 2019
    Publication date: November 14, 2019
    Applicant: ISHIHARA SANGYO KAISHA, LTD.
    Inventor: Tomona YAMAGUCHI
  • Patent number: 10468614
    Abstract: The present disclosure provides a photoelectric conversion element including a lower electrode, a photoelectric conversion layer, and an upper electrode in this order; a voltage is applied between the lower electrode and the upper electrode; the photoelectric conversion layer contains a first organic compound and a second organic compound; the first organic compound has a lower oxidation potential than the second organic compound, and ?E represented by the following formula (A) satisfies the following formula (B); where ?E=oxidation potential of first organic compound?reduction potential of second organic compound (A) ?E?1.79[V]??(B).
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: November 5, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Satoru Shiobara, Naoki Yamada, Tetsuo Takahashi, Jun Kamatani, Yosuke Nishide, Hirokazu Miyashita, Tomona Yamaguchi, Hironobu Iwawaki, Hiroki Ohrui, Masumi Itabashi, Norifumi Kajimoto