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).

  • Publication number: 20240172460
    Abstract: A light-emitting device with favorable carrier balance is provided. The light-emitting device includes a light-emitting layer between a first electrode and a second electrode. The light-emitting layer includes at least a first substance and a light-emitting substance, the first substance includes an organic compound having one or more of a carbazole ring, an aromatic amine skeleton, and a ?-electron deficient heteroaromatic ring, a luminescence lifetime of delayed fluorescence caused by photoexcitation of the light-emitting substance is shorter at a first temperature than at a second temperature, the first temperature is lower than the second temperature, and the first temperature and the second temperature are each higher than or equal to 10 K and lower than or equal to 300 K.
    Type: Application
    Filed: October 27, 2023
    Publication date: May 23, 2024
    Inventors: Harue OSAKA, Satoshi SEO, Nobuharu OHSAWA, Kazuki KAJIYAMA, Hiromitsu KIDO
  • Publication number: 20240147835
    Abstract: To provide a novel organometallic complex and a novel light-emitting device that are useful or reliable. The organometallic complex includes platinum (Pt), a cyano group, and a phenyl group that has two alkyl groups at the ortho-positions. The light-emitting device includes an organic compound layer held between a pair of electrodes; the organic compound layer includes a light-emitting layer; the light-emitting layer contains an organic compound and the organometallic complex; the organometallic complex includes platinum (Pt), a cyano group, and a phenyl group that has two alkyl groups at the ortho-positions; and the difference between the LUMO level of the organic compound and the HOMO level of the organometallic complex is greater than or equal to 2.5 eV and less than or equal to 3.0 eV.
    Type: Application
    Filed: September 19, 2023
    Publication date: May 2, 2024
    Inventors: Tomoya YAMAGUCHI, Hideko YOSHIZUMI, Yui YOSHIYASU, Masatoshi TAKABATAKE, Hiroki MURAKAMI, Nobuharu OHSAWA, Hiromitsu KIDO
  • Publication number: 20240059720
    Abstract: A novel organometallic complex is provided. An organometallic complex represented by General Formula (G1) includes iridium, a first ligand, and a second ligand. Each of the first ligand and the second ligand is a cyclometalated ligand. The first ligand has a quinoline ring coordinated to the iridium. The second ligand has a pyrimidine ring coordinated to the iridium. At least one of the first ligand and the second ligand includes a substituted or unsubstituted aryl group as a substituent. The proportion of the first ligand is twice the proportion of the second ligand. (In General Formula (G1), R1 to R16 each independently represent any one of hydrogen, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted aryl group having 6 to 13 carbon atoms, and a substituted or unsubstituted heteroaryl group having 3 to 12 carbon atoms.
    Type: Application
    Filed: December 16, 2021
    Publication date: February 22, 2024
    Inventors: Hideko YOSHIZUMI, Hiromitsu KIDO, Satomi WATABE, Satoshi SEO
  • Publication number: 20240008301
    Abstract: A green phosphorescent light-emitting device with a long lifetime is provided. The light-emitting device includes a first electrode, a second electrode, and a light-emitting layer. The light-emitting layer is between the first electrode and the second electrode. The light-emitting layer includes a first organic compound, a second organic compound, and a phosphorescent light-emitting substance. The first organic compound includes a heteroaromatic ring skeleton and an aromatic hydrocarbon group. The second organic compound includes a bicarbazole skeleton. The lowest triplet excited level of the first organic compound is derived from only the aromatic hydrocarbon group. The energy of the lowest triplet excited level of the second organic compound is higher than or equal to 2.20 eV and lower than or equal to 2.65 eV.
    Type: Application
    Filed: June 27, 2023
    Publication date: January 4, 2024
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Toshiki Sasaki, Hiromitsu KIDO, Tsunenori SUZUKI, Nobuharu OHSAWA, Hideko YOSHIZUMI, Satoshi SEO, Satoko NUMATA, Eriko AOYAMA, Yui YOSHIYASU
  • Publication number: 20240008355
    Abstract: A light-emitting device includes a light-emitting layer containing a light-emitting substance and a first organic compound. The light-emitting substance is an organometallic complex containing a central metal and ligands. One of the ligands includes a skeleton formed by a ring A1 and a pyridine ring bonded to each other. The ring A1 represents an aromatic ring or a heteroaromatic ring. The pyridine ring includes an alkyl group having 1 to 6 carbon atoms and being substituted with deuterium. The first organic compound includes an electron-transport skeleton and first and second substituents that are bonded to the electron-transport skeleton. The electron-transport skeleton includes a heteroaromatic ring having two or more nitrogen atoms. The first substituent includes one or both of an aromatic ring and a heteroaromatic ring. The second substituent includes a skeleton having a hole-transport property.
    Type: Application
    Filed: June 27, 2023
    Publication date: January 4, 2024
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Toshiki Sasaki, Hiromitsu Kido, Tsunenori Suzuki, Nobuharu Ohsawa, Hideko Yoshizumi, Satoshi Seo, Satoko Numata, Eriko Aoyama, Yui Yoshiyasu
  • Publication number: 20230416201
    Abstract: A novel organic compound that is highly convenient, useful, or reliable is provided. The organic compound is represented by General Formula (G1). Note that R1 to R4 each independently represent hydrogen (including deuterium), a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, or a substituted or unsubstituted cycloalkyl group having 3 to 10 carbon atoms; Ar1 is represented by General Formula (g1-1) below; Ar2 represents a substituted or unsubstituted aryl group having 10 to 30 carbon atoms or a substituted or unsubstituted heteroaryl group having 2 to 30 carbon atoms; Ar3 is represented by General Formula (g1-2) below; ? represents a substituted or unsubstituted arylene group having 6 to 30 carbon atoms; and n represents an integer of 0 to 4.
    Type: Application
    Filed: June 7, 2023
    Publication date: December 28, 2023
    Inventors: Anna TADA, Kyoko TAKEDA, Sachiko KAWAKAMI, Hiromitsu KIDO
  • Publication number: 20230320130
    Abstract: A novel light-emitting device that is highly convenient, useful, or reliable is provided. The light-emitting device includes a function of emitting light, a first electrode, a second electrode, and a unit. The light has the maximum peak at a wavelength (lambda). The second electrode includes a region overlapping with the first electrode. The unit includes a region positioned between the first electrode and the second electrode. The unit includes a first layer, a second layer, and a third layer. The first layer includes a region positioned between the second layer and the third layer. The first layer contains a light-emitting material. The second layer includes a fourth layer and a fifth layer. The fifth layer includes a region positioned between the fourth layer and the first layer. The fourth layer contains a first organic compound. The first organic compound has a first refractive index with respect to light having the wavelength (lambda). The fifth layer is in contact with the fourth layer.
    Type: Application
    Filed: July 28, 2021
    Publication date: October 5, 2023
    Inventors: Takeyoshi WATABE, Airi UEDA, Hiromitsu KIDO, Nobuharu OHSAWA, Satoshi SEO
  • Publication number: 20230250119
    Abstract: A novel organic compound that is highly convenient, useful, or reliable is provided. The organic compound is represented by General Formula (G0) below. Note that in General Formula (G0), R101 to R111 each independently represent hydrogen or an alkyl group having 1 to 6 carbon atoms, n is 1 or 2, and L represents a ligand represented by General Formula (L0). In General Formula (L0), R201 to R208 each independently represent hydrogen, deuterium, or an alkyl group having 1 to 6 carbon atoms, and some or all of hydrogen atoms of the alkyl group may be substituted by deuterium.
    Type: Application
    Filed: February 7, 2023
    Publication date: August 10, 2023
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Tomoya Yamaguchi, Hiromitsu Kido, Hideko Yoshizumi, Satoshi Seo
  • Publication number: 20230203054
    Abstract: An organic compound with a long lifetime and high emission efficiency is provided. An organic compound represented by General Formula (G1) is provided. In the formula, any one of X1 to X4 represents N, another one represents C, and the others represent C or N. Any one of C is bonded to a group represented by General Formula (r1), and the others are bonded to hydrogen (H), an alkyl (R) group, a cycloalkyl (Cy) group, an aryl (Ar) group, or a heteroaryl (Het) group. Ar1 represents an aromatic hydrocarbon, and is fused to an adjacent ring at a given site. When Ar1 represents a benzene ring, the benzene ring includes an Ar group or a Het group. Q and Z represent O or S. Any of R31 to R34 represents a bond to any one of X1 to X4, and the others represent H, an R group, a Cy group, an Ar group, or a Het group. Any one of R35 to R38 represents a polycyclic ring aromatic hydrocarbon group or a Het group, and the others represent H, an R group, a Cy group, an Ar group, or a Het group.
    Type: Application
    Filed: December 20, 2022
    Publication date: June 29, 2023
    Inventors: Sachiko KAWAKAMI, Yuki HAYASHI, Miyako MORIKUBO, Tomohiro KUBOTA, Hiromitsu KIDO, Tomoya YAMAGUCHI, Hideko YOSHIZUMI, Satoshi SEO
  • Patent number: 11690290
    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: Grant
    Filed: August 4, 2020
    Date of Patent: June 27, 2023
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Tomoka Hara, Hideko Yoshizumi, Hiromitsu Kido, Satoshi Seo
  • Publication number: 20230147615
    Abstract: An organic compound that is stable in an excited state and has high emission efficiency is provided. An organic compound represented by General Formula (G1) is provided. Note that in General Formula (G1), Q1 represents sulfur or oxygen. R1 to R5 each independently represent hydrogen, deuterium, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 10 carbon atoms, a substituted or unsubstituted polycyclic alkyl group having 6 to 10 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 carbon atoms. In addition, A1 represents an aryl group having 6 to 100 carbon atoms and including a substituted or unsubstituted substituent, or a heteroaryl group having 2 to 100 carbon atoms and including a substituted or unsubstituted substituent. Deuterium is substituted for at least one of hydrogen contained in R1 to R5 and A1.
    Type: Application
    Filed: October 17, 2022
    Publication date: May 11, 2023
    Inventors: Nozomi KOMATSU, Sachiko KAWAKAMI, Hiromitsu KIDO, Masatoshi TAKABATAKE
  • Publication number: 20230112454
    Abstract: A novel organic compound is provided. That is, a novel organic compound that is effective in improving reliability of a light-emitting element is provided. The organic compound includes a condensed ring including a pyrimidine ring and is represented by General Formula (G1). In General Formula (G1), A represents a group having 6 to 100 carbon atoms and includes at least one of an aromatic ring and a heteroaromatic ring. The aromatic ring and the heteroaromatic ring may each include a substituent. Furthermore, Q represents oxygen or sulfur. A ring X represents a substituted or unsubstituted naphthalene ring or a substituted or unsubstituted phenanthrene ring.
    Type: Application
    Filed: November 7, 2022
    Publication date: April 13, 2023
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Miki KURIHARA, Hideko YOSHIZUMI, Satomi WATABE, Hiromitsu KIDO, Satoshi SEO
  • Publication number: 20230027613
    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: Application
    Filed: August 23, 2022
    Publication date: January 26, 2023
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Tomoya YAMAGUCHI, Hideko YOSHIZUMI, Hiromitsu KIDO, Airi UEDA, Satoshi SEO
  • Patent number: 11522142
    Abstract: A novel light-emitting element material is provided. Alternatively, a light-emitting element material capable of simplifying a process for manufacturing a light-emitting element is provided. Alternatively, a light-emitting element material capable of reducing the cost for manufacturing a light-emitting element is provided. Alternatively, one embodiment of the present invention provides a light-emitting element material capable of achieving a light-emitting element having favorable emission efficiency. A light-emitting element material including an organic compound which includes a first skeleton having a carrier-transport property and a second skeleton having a light-emitting property in one molecule and in which the molecular weight is less than or equal to 3000, is provided.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: December 6, 2022
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Satoshi Seo, Hideko Yoshizumi, Tomoya Yamaguchi, Hiromitsu Kido, Takeyoshi Watabe, Airi Tomida, Keito Fukuda
  • Patent number: 11495753
    Abstract: A novel organic compound is provided. That is, a novel organic compound that is effective in improving reliability of a light-emitting element is provided. The organic compound includes a condensed ring including a pyrimidine ring and is represented by General Formula (G1). In General Formula (G1), A represents a group having 6 to 100 carbon atoms and includes at least one of an aromatic ring and a heteroaromatic ring. The aromatic ring and the heteroaromatic ring may each include a substituent. Furthermore, Q represents oxygen or sulfur. A ring X represents a substituted or unsubstituted naphthalene ring or a substituted or unsubstituted phenanthrene ring.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: November 8, 2022
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Miki Kurihara, Hideko Yoshizumi, Satomi Watabe, Hiromitsu Kido, Satoshi Seo
  • Patent number: 11469380
    Abstract: A benzofuropyrimidine derivative or a benzothienopyrimidine derivative that is a novel organic compound is provided. The organic compound has a benzofuropyrimidine skeleton or a benzothienopyrimidine skeleton and is represented by General Formula (G1) below. In General Formula (G1), Q represents oxygen or sulfur. Each of A1 and A2 independently represents a substituted or unsubstituted polycyclic aromatic hydrocarbon. Furthermore, m represents any one of integers from 0 to 4. Furthermore, n represents any one of integers from 1 to 4. Each of R1 to R12 independently represents any one of hydrogen, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 7 carbon atoms, and a substituted or unsubstituted aryl group having 6 to 13 carbon atoms.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: October 11, 2022
    Inventors: Miki Kurihara, Hideko Yoshizumi, Hiromitsu Kido, Satomi Watabe, Satoshi Seo
  • Patent number: 11462696
    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: October 4, 2022
    Inventors: Tomoya Yamaguchi, Hideko Yoshizumi, Hiromitsu Kido, Airi Ueda, Satoshi Seo
  • Patent number: 11456424
    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: Grant
    Filed: June 13, 2018
    Date of Patent: September 27, 2022
    Inventors: Tomoka Hara, Hideko Yoshizumi, Hiromitsu Kido, Satoshi Seo
  • 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