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: 20180248136
    Abstract: A novel organometallic complex having high heat resistance is provided. The organometallic complex, which includes a structure represented by General Formula (G1), includes iridium and a ligand. The ligand has a pyrazine skeleton. Iridium is bonded to nitrogen at the 1-position of the pyrazine skeleton. A phenyl group that has an alkyl group as a substituent is bonded at each of the 2- and 3-positions of the pyrazine skeleton, and a phenyl group that has a cyano group as a substituent is bonded at the 5-position of the pyrazine skeleton. The ortho position of the phenyl group bonded at the 2-position of the pyrazine skeleton is bonded to iridium. In the formula, each of A1 to A4 independently represents a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms.
    Type: Application
    Filed: April 26, 2018
    Publication date: August 30, 2018
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Tomoya Yamaguchi, Hideko Inoue, Hiromitsu Kido, Satoshi Seo, Tatsuyoshi Takahashi
  • Publication number: 20180182976
    Abstract: A novel organic compound is provided. Moreover, a light-emitting element with high emission efficiency and a long lifetime is provided. A novel organic compound having a bicarbazole skeleton and a benzofuropyrimidine skeleton or a benzothienopyrimidine skeleton that includes at least one condensed ring or two condensed rings is provided. Moreover, a light-emitting element including the organic compound is provided.
    Type: Application
    Filed: December 15, 2017
    Publication date: June 28, 2018
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Miki KURIHARA, Hideko YOSHIZUMI, Hiromitsu KIDO, Tatsuyoshi TAKAHASHI, Satoshi SEO
  • Patent number: 9985234
    Abstract: A light-emitting element is provided. The light-emitting element includes first and second electrodes and an EL layer therebetween. The EL layer includes a light-emitting layer containing first and second substances. The amount of the first substance is larger than that of the second substance. The second substance emits light. Average transition dipole moments of the second substance are divided into three components in x-, y-, and z-directions which are orthogonal to each other. Components parallel to the first or second electrode are assumed to be the components in the x- and y-directions, and a component perpendicular to the first or second electrode is assumed to be the component in the z-direction. The proportion of the component in the z-direction is represented by a, which is less than or equal to 0.2.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: May 29, 2018
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Satoshi Seo, Hiromi Seo, Tsunenori Suzuki, Hiromitsu Kido
  • Patent number: 9985233
    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: November 29, 2016
    Date of Patent: May 29, 2018
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Naoaki Hashimoto, Tsunenori Suzuki, Satoshi Seo, Hiromi Seo, Hiromitsu Kido
  • Patent number: 9960371
    Abstract: A novel organometallic complex having high heat resistance is provided. The organometallic complex, which includes a structure represented by General Formula (G1), includes iridium and a ligand. The ligand has a pyrazine skeleton. Iridium is bonded to nitrogen at the 1-position of the pyrazine skeleton. A phenyl group that has an alkyl group as a substituent is bonded at each of the 2- and 3-positions of the pyrazine skeleton, and a phenyl group that has a cyano group as a substituent is bonded at the 5-position of the pyrazine skeleton. The ortho position of the phenyl group bonded at the 2-position of the pyrazine skeleton is bonded to iridium. In the formula, each of A1 to A4 independently represents a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: May 1, 2018
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Tomoya Yamaguchi, Hideko Inoue, Hiromitsu Kido, Satoshi Seo, Tatsuyoshi Takahashi
  • Publication number: 20180108847
    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. An organic compound has a benzonaphthofuran skeleton and a triazine skeleton and is represented by General Formula (G1) below. (In the formula, Ar1, Ar2, and Ar3 separately represent a substituted or unsubstituted phenylene group, and each of m and n is independently 0 or 1. R1 and R2 separately represent hydrogen, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted terphenyl group, a substituted or unsubstituted fluorenyl group, a substituted or unsubstituted methylfluorenyl group, a substituted or unsubstituted dimethylfluorenyl group, a substituted or unsubstituted spirofluorenyl group, a substituted or unsubstituted naphthyl group, or a substituted or unsubstituted phenanthrenyl group.
    Type: Application
    Filed: October 11, 2017
    Publication date: April 19, 2018
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hiroki Suzuki, Satoshi SEO, Tatsuyoshi TAKAHASHI, Hiromitsu KIDO
  • Publication number: 20180083206
    Abstract: A novel organometallic complex with high color purity is provided. An organometallic complex represented by General Formula (G1) includes iridium and a plurality of ligands each having a 2-phenylpyridine skeleton, and one or two of the ligands have a carbazole skeleton at the 4-position of the 2-phenylpyridine skeleton. (In the formula, R1 to R8 and R9 to R23 separately represent hydrogen, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted aryl group having 6 to 13 carbon atoms, or a substituted or unsubstituted heteroaryl group having 3 to 12 carbon atoms, and m is 1 or 2.
    Type: Application
    Filed: September 20, 2017
    Publication date: March 22, 2018
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Miki Kurihara, Hideko Yoshizumi, Tatsuyoshi Takahashi, Hiromitsu Kido, Satoshi Seo
  • Publication number: 20180062084
    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: Application
    Filed: August 28, 2017
    Publication date: March 1, 2018
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Takeyoshi Watabe, Satomi Watabe, Hideko Yoshizumi, Tomoka Hara, Yui Yamada, Takahiro Ishisone, Hiromitsu Kido, Kunihiko Suzuki, Satoshi Seo
  • Publication number: 20180053903
    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: Application
    Filed: August 11, 2017
    Publication date: February 22, 2018
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hiroki SUZUKI, Tomoya YAMAGUCHI, Hideko YOSHIZUMI, Satoshi SEO, Tatsuyoshi TAKAHASHI, Hiromitsu KIDO, Satomi WATABE
  • Publication number: 20180006221
    Abstract: A method for manufacturing a light-emitting element, in particular, a method for manufacturing a light-emitting element with high emission efficiency is provided. In the method for manufacturing a light-emitting element that includes a light-emitting layer containing a host material and a light-emitting material that is an organic compound or an organic metal complex, the light-emitting layer is formed by co-evaporation of the light-emitting material and the host material, and the light-emitting layer is deposited by co-evaporation while the percentage of the partial pressure of carbon dioxide with respect to the total pressure in an evaporation chamber for the co-evaporation is kept higher than that in the air.
    Type: Application
    Filed: June 27, 2017
    Publication date: January 4, 2018
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Satoshi Seo, Hiromi Seo, Tsunenori Suzuki, Hiromitsu Kido
  • Publication number: 20170338435
    Abstract: A light-emitting element is provided. The light-emitting element includes first and second electrodes and an EL layer therebetween. The EL layer includes a light-emitting layer containing first and second substances. The amount of the first substance is larger than that of the second substance. The second substance emits light. Average transition dipole moments of the second substance are divided into three components in x-, y-, and z-directions which are orthogonal to each other. Components parallel to the first or second electrode are assumed to be the components in the x- and y-directions, and a component perpendicular to the first or second electrode is assumed to be the component in the z-direction. The proportion of the component in the z-direction is represented by a, which is less than or equal to 0.2.
    Type: Application
    Filed: May 17, 2017
    Publication date: November 23, 2017
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Satoshi Seo, Hiromi Seo, Tsunenori Suzuki, Hiromitsu Kido
  • Publication number: 20170288154
    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: March 28, 2017
    Publication date: October 5, 2017
    Inventors: Satoshi SEO, Hideko INOUE, Miki KURIHARA, Yui YAMADA, Tatsuyoshi TAKAHASHI, Hiromitsu KIDO
  • Publication number: 20170288155
    Abstract: To provide a novel organometallic complex. The organometallic complex is represented by General Formula (G1) and includes a central metal, a first ligand, and a second ligand. The first ligand and the second ligand are cyclometalated ligands. At least one of the first ligand and the second ligand includes a substituted or unsubstituted aryl group as a substituent. In General Formula (G1), each of R1 to R15 independently represents any of hydrogen, a halogen group, 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. Note that at least one of R1 to R15 represents a substituted or unsubstituted aryl group having 6 to 13 carbon atoms.
    Type: Application
    Filed: March 28, 2017
    Publication date: October 5, 2017
    Inventors: Miki KURIHARA, Yui YAMADA, Hideko INOUE, Satoshi SEO, Tatsuyoshi TAKAHASHI, Hiromitsu KIDO
  • Publication number: 20170186971
    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: Application
    Filed: December 20, 2016
    Publication date: June 29, 2017
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Miki Kanamoto, Hideko INOUE, Tatsuyoshi TAKAHASHI, Hiromitsu KIDO, Satoshi SEO
  • Publication number: 20170179409
    Abstract: A novel organometallic complex having high heat resistance is provided. The organometallic complex, which includes a structure represented by General Formula (G1), includes iridium and a ligand. The ligand has a pyrazine skeleton. Iridium is bonded to nitrogen at the 1-position of the pyrazine skeleton. A phenyl group that has an alkyl group as a substituent is bonded at each of the 2- and 3-positions of the pyrazine skeleton, and a phenyl group that has a cyano group as a substituent is bonded at the 5-position of the pyrazine skeleton. The ortho position of the phenyl group bonded at the 2-position of the pyrazine skeleton is bonded to iridium. In the formula, each of A1 to A4 independently represents a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms.
    Type: Application
    Filed: December 14, 2016
    Publication date: June 22, 2017
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Tomoya Yamaguchi, Hideko Inoue, Hiromitsu Kido, Satoshi Seo
  • Publication number: 20170155072
    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: November 29, 2016
    Publication date: June 1, 2017
    Inventors: Naoaki HASHIMOTO, Tsunenori SUZUKI, Satoshi SEO, Hiromi SEO, Hiromitsu KIDO