Patents by Inventor Hiromitsu KIDO

Hiromitsu KIDO 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: 11450820
    Abstract: To provide a light-emitting device not only including a light-emitting layer in which energy is efficiently transferred from a host material to a guest material but also having high reliability. In the light-emitting device, the light-emitting layer includes an organic compound having a specific naphthofuropyrazine skeleton as a host material and a light-emitting substance (e.g., an organometallic complex) whose T1 level (TG) is within a certain range as a guest material, thereby increasing not only the efficiency of energy transfer from the host material to the guest material but also the reliability.
    Type: Grant
    Filed: June 9, 2020
    Date of Patent: September 20, 2022
    Inventors: Yuta Kawano, Hiromitsu Kido, Toshiki Sasaki, Tomoya Yamaguchi, Hideko Yoshizumi, Satoshi Seo
  • Patent number: 11430958
    Abstract: A novel organic compound is provided. That is, a novel organic compound that is effective in improving element characteristics and reliability is provided. The organic compound is represented by General Formula (G1) having a dibenzobenzofuroquinoxaline skeleton or a dibenzobenzothienoquinoxaline skeleton. In General Formula (G1), Q represents O or S, at least one of R1 to R12 represents a first group having a substituted or unsubstituted condensed aromatic ring or condensed heteroaromatic ring having 3 to 30 carbon atoms, and the other or others of R1 to R12 each independently represent any one of hydrogen, a halogeno group, a hydroxy group, an amino group, a nitro group, and a group having 1 to 50 carbon atoms.
    Type: Grant
    Filed: January 16, 2019
    Date of Patent: August 30, 2022
    Inventors: Tomoya Yamaguchi, Hideko Yoshizumi, Hiromitsu Kido, Airi Ueda, Satoshi Seo
  • Publication number: 20220216445
    Abstract: An organic semiconductor device with low driving voltage is provided. The organic semiconductor device includes a layer containing an organic compound between a pair of electrodes. The layer containing an organic compound includes a hole-transport region. The hole-transport region includes a first layer and a second layer. The first layer is positioned between the anode and the second layer. When a potential gradient of a surface potential of an evaporated film is set as GSP (mV/nm), a value obtained by subtracting GSP of an organic compound in the second layer from GSP of an organic compound in the first layer is less than or equal to 20 (mV/nm).
    Type: Application
    Filed: December 16, 2021
    Publication date: July 7, 2022
    Inventors: Hiromi SEO, Takeyoshi WATABE, Airi UEDA, Yuta KAWANO, Nobuharu OHSAWA, Hiromitsu KIDO, Satoshi SEO
  • Publication number: 20220029105
    Abstract: A novel organic compound, a benzofuropyrimidine derivative or a benzothienopyrimidine derivative is provided. The organic compound has a structure in which a benzothienocarbazolyl ring, a benzofurocarbazolyl ring, an indolocarbazolyl ring, or an indenocarbazolyl ring is bonded to the 8-position of a benzofuropyrimidine ring or a benzothienopyrimidine ring directly or through an aromatic hydrocarbon ring. That is, the organic compound is represented by General Formula (G1) below.
    Type: Application
    Filed: September 12, 2019
    Publication date: January 27, 2022
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Tomoka HARA, Keito TOSU, Hideko YOSHIZUMI, Toshiki SASAKI, Hiromitsu KIDO, Satoshi SEO
  • Publication number: 20220029111
    Abstract: Provided is a composition for a light-emitting device, which enables manufacture of a highly productive light-emitting device while device characteristics and reliability of the light-emitting device are maintained. The composition for a light-emitting device is formed by mixing a plurality of organic compounds. A first organic compound having a diazine skeleton (preferably, a benzofurodiazine skeleton, a naphthofurodiazine skeleton, a phenanthrofurodiazine skeleton, a benzothienodiazine skeleton, a naphthothienodiazine skeleton, or a phenanthrothienodiazine skeleton) and a second organic compound that is an aromatic amine compound are mixed to form the composition for a light-emitting device.
    Type: Application
    Filed: November 19, 2019
    Publication date: January 27, 2022
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Satoshi SEO, Nobuharu OHSAWA, Toshiki SASAKI, Hiromitsu KIDO
  • Publication number: 20210395271
    Abstract: An object is to provide a novel composition for an EL device. Another object of one embodiment of the present invention is to provide a composition for an EL device capable of easily manufacturing an EL device with stable characteristics. Another object of one embodiment of the present invention is to provide a composition for an EL device capable of manufacturing an EL device with stable characteristics at low cost. The present inventors have studied a composition for an EL device in which different substances are mixed in advance and which does not cause change in characteristics of the EL device even when evaporation is repeated with use of the composition. As a result, a composition for an EL device in which a difference in the 5% weight loss temperature under a pressure lower than or equal to 0.1 Pa between contained substances is less than or equal to 50° C. is provided.
    Type: Application
    Filed: November 20, 2019
    Publication date: December 23, 2021
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Satoshi SEO, Nobuharu OHSAWA, Toshiki SASAKI, Hiromitsu KIDO
  • Publication number: 20210391553
    Abstract: A light-emitting element that includes a fluorescent material and has a high emission efficiency is provided. A light-emitting element in which a delayed fluorescence component due to TTA accounts for a high proportion of emissive components is provided. A novel light-emitting device with a high emission efficiency and a low power consumption is provided. A light-emitting element includes an anode, a cathode, and an EL layer. The EL layer includes a light-emitting layer including a host material and an electron-transport layer including a first material in contact with the light-emitting layer. The LUMO level of the first material is lower than that of the host material. The proportion of a delayed fluorescence component due to TTA is greater than or equal to 10 percent of the light emission from the EL layer. The proportion of the delayed fluorescence component due to TTA may be greater than or equal to 15 percent of the light emission.
    Type: Application
    Filed: June 24, 2021
    Publication date: December 16, 2021
    Inventors: Naoaki HASHIMOTO, Tsunenori SUZUKI, Satoshi SEO, Hiromi SEO, Hiromitsu KIDO
  • Publication number: 20210371427
    Abstract: An organic compound with high heat resistance is provided. A novel organic compound that can be used for a light-emitting device that emits red light or near-infrared light is provided. An organic compound represented by General Formula (G0) is provided. In General Formula (G0), Q represents oxygen or sulfur, Ar1 represents a substituted or unsubstituted fused aromatic ring, R1 and R2 each independently represent hydrogen or a group with 1 to 100, inclusive, carbon atoms in total, and at least one of R1 and R2 has a hole-transport skeleton or a fused ring.
    Type: Application
    Filed: October 7, 2019
    Publication date: December 2, 2021
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Tomoya Yamaguchi, Hiromitsu KIDO, Hideko YOSHIZUMI, Satoshi SEO
  • Publication number: 20210363151
    Abstract: A benzofuropyrimidine derivative or benzothienopyrimidine derivative that is a novel organic compound is provided. An organic compound represented by General Formula (G1) below. Q represents oxygen or sulfur. Ar1, Ar2, Ar3, and Ar4 each independently represent an aromatic hydrocarbon ring, and the number of carbon atoms included in the aromatic hydrocarbon ring is 6 to 25. m and n are each 0 or 1. A is a group having 12 to 100 carbon atoms in total and includes one or more of a benzene ring, a naphthalene ring, a fluorene ring, a phenanthrene ring, a triphenylene ring, a heteroaromatic ring including a dibenzothiophene ring, a heteroaromatic ring including a dibenzofuran ring, a heteroaromatic ring including a carbazole ring, a benzimidazole ring, and a triphenylamine structure.
    Type: Application
    Filed: May 21, 2019
    Publication date: November 25, 2021
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Satoshi SEO, Satomi WATABE, Hideko YOSHIZUMI, Hiromitsu KIDO, Toshiki SASAKI, Akira NAGASAKA, Yuta KAWANO
  • Patent number: 11121326
    Abstract: A novel organic compound is provided. That is, a novel organic compound that is effective in improving the element characteristics and reliability is provided. The organic compound has a benzofuroquinoxaline skeleton or a benzothienoquinoxaline skeleton. The organic compound is represented by General Formula (G1). In the formula, Q represents O or S, and each of R1 to R8 independently represents any of hydrogen, a halogeno group, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted aryl group having 6 to 12 carbon atoms, and a substituted or unsubstituted heteroaryl group having 3 to 12 carbon atoms. At least one of R1 to R8 includes a substituted or unsubstituted condensed aromatic or heteroaromatic ring having 3 to 24 carbon atoms.
    Type: Grant
    Filed: July 28, 2020
    Date of Patent: September 14, 2021
    Inventors: Hiroki Suzuki, Tomoya Yamaguchi, Hideko Yoshizumi, Satoshi Seo, Tatsuyoshi Takahashi, Hiromitsu Kido, Satomi Watabe
  • Patent number: 11088333
    Abstract: A novel organic compound is provided. That is, a novel organic compound that is effective in improving the element characteristics and reliability is provided. The organic compound has a benzofuroquinoxaline skeleton or a benzothienoquinoxaline skeleton. The organic compound is represented by General Formula (G1). In the formula, Q represents O or S, and each of R1 to R8 independently represents any of hydrogen, a halogeno group, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted aryl group having 6 to 12 carbon atoms, and a substituted or unsubstituted heteroaryl group having 3 to 12 carbon atoms. At least one of R1 to R8 includes a substituted or unsubstituted condensed aromatic or heteroaromatic ring having 3 to 24 carbon atoms.
    Type: Grant
    Filed: July 28, 2020
    Date of Patent: August 10, 2021
    Inventors: Hiroki Suzuki, Tomoya Yamaguchi, Hideko Yoshizumi, Satoshi Seo, Tatsuyoshi Takahashi, Hiromitsu Kido, Satomi Watabe
  • Patent number: 11088332
    Abstract: A compound includes a benzofuropyrimidine skeleton or a benzothienopyrimidine skeleton, a first substituent, and a second substituent. Each of the first substituent and the second substituent includes a furan skeleton, a thiophene skeleton, or a pyrrole skeleton. The first substituent is bonded to a pyrimidine ring included in the benzofuropyrimidine skeleton or a pyrimidine ring included in the benzothienopyrimidine skeleton. The second substituent is bonded to a benzene ring included in the benzofuropyrimidine skeleton or a benzene ring included in the benzothienopyrimidine skeleton. The light-emitting element includes the compound.
    Type: Grant
    Filed: March 5, 2020
    Date of Patent: August 10, 2021
    Inventors: Miki Kanamoto, Hideko Inoue, Tatsuyoshi Takahashi, Hiromitsu Kido, Satoshi Seo
  • Publication number: 20210206775
    Abstract: Provided is a novel organic compound, a benzofuropyrimidine derivative or a benzothienopyrimidine derivative, which is an organic compound represented by General Formula (G1) below. In General Formula (G1), Q represents oxygen or sulfur. Furthermore, A is a group having 12 to 100 carbon atoms in total and includes one or more of a benzene ring, a naphthalene ring, a fluorene ring, a phenanthrene ring, a triphenylene ring, a heteroaromatic ring including a dibenzothiophene ring, a heteroaromatic ring including a dibenzofuran ring, a heteroaromatic ring including a carbazole ring, a benzimidazole ring, and a triphenylamine structure.
    Type: Application
    Filed: May 21, 2019
    Publication date: July 8, 2021
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Satomi WATABE, Hideko YOSHIZUMI, Satoshi SEO, Hiromitsu KIDO, Toshiki SASAKI
  • Patent number: 11050032
    Abstract: A light-emitting element that includes a fluorescent material and has a high emission efficiency is provided. A light-emitting element in which a delayed fluorescence component due to TTA accounts for a high proportion of emissive components is provided. A novel light-emitting device with a high emission efficiency and a low power consumption is provided. A light-emitting element includes an anode, a cathode, and an EL layer. The EL layer includes a light-emitting layer including a host material and an electron-transport layer including a first material in contact with the light-emitting layer. The LUMO level of the first material is lower than that of the host material. The proportion of a delayed fluorescence component due to TTA is greater than or equal to 10 percent of the light emission from the EL layer. The proportion of the delayed fluorescence component due to TTA may be greater than or equal to 15 percent of the light emission.
    Type: Grant
    Filed: February 14, 2020
    Date of Patent: June 29, 2021
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Naoaki Hashimoto, Tsunenori Suzuki, Satoshi Seo, Hiromi Seo, Hiromitsu Kido
  • Patent number: 11024809
    Abstract: In a light-emitting element, a layer including an organic compound includes a light-emitting layer; the light-emitting layer includes a tris iridium complex; and on the assumption that there is a rectangle which covers the iridium complex and in which at least one atom of the iridium complex is located over each of four sides when the iridium complex is two-dimensionally seen from a direction of a C3 symmetry axis of the iridium complex, A×B/C2 is greater than or equal to 2.5, where A represents a maximum length of a long side of the rectangle, B represents a length of a short side of the rectangle when the length of the long side of the rectangle is A, and C represents a width in the direction of the C3 symmetry axis when the iridium complex is two-dimensionally seen from a normal direction of the C3 symmetry axis.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: June 1, 2021
    Inventors: Takeyoshi Watabe, Satomi Watabe, Hideko Yoshizumi, Tomoka Hara, Yui Yamada, Takahiro Ishisone, Hiromitsu Kido, Kunihiko Suzuki, Satoshi Seo
  • Publication number: 20210151695
    Abstract: A novel organometallic complex with high reliability is provided. A light-emitting element includes an EL layer between a pair of electrodes. The EL layer includes at least a light-emitting layer. The light-emitting layer contains an organometallic complex. The organometallic complex includes a first ligand and a second ligand which are coordinated to a central metal. The HOMO is distributed over the first ligand, and the LUMO is distributed over the second ligand. The first ligand and the second ligand are cyclometalated ligands.
    Type: Application
    Filed: November 23, 2020
    Publication date: May 20, 2021
    Inventors: Satoshi SEO, Hideko INOUE, Miki KURIHARA, Yui YAMADA, Tatsuyoshi TAKAHASHI, Hiromitsu KIDO
  • Publication number: 20210151689
    Abstract: A novel compound is provided. A light-emitting element with high emission efficiency and a long lifetime is provided. The compound is an organic compound that includes a benzofuro[3,2-d]pyrimidine or benzothieno[3,2-d]pyrimidine skeleton (General Formula (G0)). The 2-position of the benzofuro[3,2-d]pyrimidine or benzothieno[3,2-d]pyrimidine skeleton has a substituent and the 6- to 9-positions of the skeleton have at least one substituent. Any one of the substituents bonded to the 6- to 9-positions is bonded to the benzofuro[3,2-d]pyrimidine or benzothieno[3,2-d]pyrimidine skeleton via a phenylene group. A light-emitting element including the compound is provided.
    Type: Application
    Filed: June 13, 2018
    Publication date: May 20, 2021
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Tomoka Hara, Hideko YOSHIZUMI, Hiromitsu KIDO, Satoshi SEO
  • Publication number: 20210111352
    Abstract: A novel organic compound is provided. The organic compound is represented by General Formulae (G1), (u1), and (g1), where Ar represents a substituted or unsubstituted condensed aromatic ring, one of R1 and R2 represents a group represented by General Formula (u1), and any one of R30 to R40 represents a bond. In addition, A is a group represented by General Formula (g1), and B represents a substituted or unsubstituted phenyl group. Moreover, n is an integer of 0 to 2, and Q1 and Q2 independently represent an oxygen atom or a sulfur atom.
    Type: Application
    Filed: September 30, 2020
    Publication date: April 15, 2021
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Tomoya YAMAGUCHI, Hideko YOSHIZUMI, Yuta KAWANO, Hiromitsu KIDO, Satoshi SEO
  • Publication number: 20210043849
    Abstract: A novel organic compound is provided. An organic compound represented by General Formula (G1) is provided. In General Formula (G1), A represents a substituent including a hole-transport skeleton, L1 represents any one of a single bond, a substituted or unsubstituted phenylene group, and a substituted or unsubstituted biphenyldiyl group, R1 and R2 independently represent any one of hydrogen and an alkyl group having 1 to 6 carbon atoms, any one of Ar1 to Ar4 is a group represented by General Formula (g1), and the others independently represent any one of hydrogen and an alkyl group having 1 to 6 carbon atoms. In General Formula (g1), B represents any one of a substituted or unsubstituted carbazolyl group, a substituted or unsubstituted dibenzofuranyl group, a substituted or unsubstituted dibenzothiophenyl group, and a substituted or unsubstituted triphenylenyl group, and L2 represents a substituted or unsubstituted phenylene group or a substituted or unsubstituted biphenyldiyl group.
    Type: Application
    Filed: August 4, 2020
    Publication date: February 11, 2021
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Tomoka Hara, Hideko Yoshizumi, Hiromitsu Kido, Satoshi Seo
  • Publication number: 20200395555
    Abstract: To provide a light-emitting device not only including a light-emitting layer in which energy is efficiently transferred from a host material to a guest material but also having high reliability. In the light-emitting device, the light-emitting layer includes an organic compound having a specific naphthofuropyrazine skeleton as a host material and a light-emitting substance (e.g., an organometallic complex) whose T1 level (TG) is within a certain range as a guest material, thereby increasing not only the efficiency of energy transfer from the host material to the guest material but also the reliability.
    Type: Application
    Filed: June 9, 2020
    Publication date: December 17, 2020
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Yuta Kawano, Hiromitsu Kido, Toshiki SASAKI, Tomoya YAMAGUCHI, Hideko YOSHIZUMI, Satoshi SEO