Patents by Inventor Yusuke TAKITA

Yusuke TAKITA 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: 20210347782
    Abstract: A novel organic compound is provided. Alternatively, an organic compound that exhibits light emission with favorable chromaticity is provided. Alternatively, an organic compound that exhibits blue light emission with favorable chromaticity is provided. Alternatively, an organic compound with favorable emission efficiency is provided. Alternatively, an organic compound having a high carrier-transport property is provided. Alternatively, an organic compound with favorable reliability is provided. An organic compound including at least one amino group in which any one of a substituted or unsubstituted dibenzofuranyl group, a substituted or unsubstituted dibenzothiophenyl group, and a substituted or unsubstituted carbazolyl group is bonded to any one of a substituted or unsubstituted naphthobisbenzofuran skeleton, a substituted or unsubstituted naphthobisbenzothiophene skeleton, and a substituted or unsubstituted naphthobenzofuranobenzothiophene skeleton is provided.
    Type: Application
    Filed: February 28, 2018
    Publication date: November 11, 2021
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kyoko TAKEDA, Harue OSAKA, Satoshi SEO, Tsunenori SUZUKI, Naoaki HASHIMOTO, Yusuke TAKITA
  • Patent number: 11101432
    Abstract: A novel light-emitting element is provided. A light-emitting element with a long lifetime is provided. A light-emitting element with high emission efficiency is provided. A novel organic compound is provided. A novel organic compound having a hole-transport property is provided. A novel hole-transport material is provided. A hole-transport material including an organic compound having a substituted or unsubstituted benzonaphthofuran skeleton and a substituted or unsubstituted amine skeleton is provided. A light-emitting element using the hole-transport material is provided. An organic compound in which an amine skeleton including two aromatic hydrocarbon groups having 6 to 60 carbon atoms is bonded to the 6- or 8-position of the benzonaphthofuran skeleton is provided.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: August 24, 2021
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Sachiko Kawakami, Tsunenori Suzuki, Yusuke Takita, Satoshi Seo
  • Publication number: 20210249619
    Abstract: A novel light-emitting device is provided. Alternatively, a light-emitting device with high emission efficiency is provided. Alternatively, a light-emitting device having along lifetime is provided. Alternatively, a light-emitting device having low driving voltage is provided. A light-emitting device including an EL layer including a first layer, a second layer, a third layer, a light-emitting layer, and a fourth layer in this order from the anode side is provided. The first layer includes a first organic compound and a second organic compound. The fourth layer includes a seventh organic compound. The first organic compound exhibits an electron-accepting property with respect to the second organic compound. The HOMO level of the second organic compound is from ?5.7 eV to ?5.4 eV. The HOMO level of the seventh organic compound is ?6.0 eV or higher.
    Type: Application
    Filed: October 3, 2019
    Publication date: August 12, 2021
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Satoshi SEO, Tsunenori SUZUKI, Takumu OKUYAMA, Yusuke TAKITA, Naoaki HASHIMOTO, Hiromi SEO, Nobuharu OHSAWA, Toshiki SASAKI, Shunpei YAMAZAKI
  • Publication number: 20210175435
    Abstract: An object is to provide a novel organic compound. Another object is to provide a novel light-emitting device. Another object is to provide a light-emitting device with favorable emission efficiency. Another object is to provide a light-emitting device with a favorable lifetime. Another object is to provide a light-emitting device with a low driving voltage. A dibenzo [c,g]carbazole derivative represented by the following general formula (G1) and a light-emitting device using it are provided. Note that at least one of R11 to R22 represents a substituent that has 14 to 60 carbon atoms in total and contains a condensed tricyclic to hexacyclic aromatic hydrocarbon skeleton, and the others independently represent any of hydrogen, an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, and a substituted or unsubstituted aryl group having 6 to 25 carbon atoms.
    Type: Application
    Filed: November 12, 2018
    Publication date: June 10, 2021
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hiroshi KADOMA, Tsunenori SUZUKI, Naoaki HASHIMOTO, Yusuke TAKITA, Satoshi SEO
  • Publication number: 20210159410
    Abstract: An object of one embodiment of the present invention is to provide a novel organic compound. The organic compound is a triarylamine derivative. The triarylamine derivative has an aryl group including a skeleton in which a naphthyl group is bonded to a naphthylene group. The other two aryl groups are each independently a phenyl group, a biphenyl group, or a terphenyl group. These groups may each have a substituent. As the substituent, an alkyl group having 1 to 6 carbon atoms or a cycloalkyl group having 3 to 6 carbon atoms can be selected.
    Type: Application
    Filed: February 3, 2021
    Publication date: May 27, 2021
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Sachiko Kawakami, Anna TADA, Yusuke TAKITA, Tsunenori SUZUKI, Naoaki HASHIMOTO, Satoshi SEO
  • Publication number: 20210139496
    Abstract: A novel organic compound is provided. An organic compound that emits light with excellent chromaticity is provided. An organic compound in which one or two groups represented by the following general formula (g1) are bonded to any one of a naphthobisbenzofuran skeleton, a naphthobisbenzothiophene skeleton, and a naphthobenzofuranobenzothiophene skeleton is provided.
    Type: Application
    Filed: May 11, 2018
    Publication date: May 13, 2021
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Kyoko TAKEDA, Harue OSAKA, Satoshi SEO, Tsunenori SUZUKI, Naoaki HASHIMOTO, Yusuke TAKITA
  • Publication number: 20210139445
    Abstract: A novel organic compound is provided. Alternatively, an organic compound that exhibits light emission with favorable chromaticity is provided. Alternatively, an organic compound that exhibits blue light emission with favorable chromaticity is provided. Alternatively, a light-emitting device with favorable emission efficiency is provided. Alternatively, an organic compound having a high carrier-transport property is provided. Alternatively, an organic compound with favorable reliability is provided. An organic compound having at least one amino group in which any one of a substituted or unsubstituted dibenzofuranyl group, a substituted or unsubstituted dibenzothiophenyl group, and a substituted or unsubstituted carbazolyl group is bonded to any one of a substituted or unsubstituted naphthobisbenzofuran skeleton, a substituted or unsubstituted naphthobisbenzothiophene skeleton, and a substituted or unsubstituted naphthobenzothienobenzofuran skeleton is provided.
    Type: Application
    Filed: April 30, 2019
    Publication date: May 13, 2021
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kyoko TAKEDA, Hiroshi KADOMA, Yusuke TAKITA, Tsunenori SUZUKI, Satoshi SEO
  • Publication number: 20210126213
    Abstract: A novel light-emitting device is provided. Alternatively, a light-emitting device with favorable emission efficiency is provided. Alternatively, a light-emitting device with a favorable lifetime is provided. Alternatively, a light-emitting device with a low driving voltage is provided. Provided is a light-emitting device including an anode, a cathode, and a layer including an organic compound that is positioned between the anode and the cathode, in which the layer including the organic compound includes a first layer, a second layer, and a light-emitting layer in this order from the anode side, the first layer includes a first substance and a second substance, the second layer includes a third substance, the first substance is an organic compound a HOMO level of which is higher than or equal to ?5.8 eV and lower than or equal to ?5.
    Type: Application
    Filed: March 13, 2019
    Publication date: April 29, 2021
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Satoshi SEO, Tsunenori SUZUKI, Yusuke TAKITA, Takumu OKUYAMA, Anna TADA
  • Patent number: 10930855
    Abstract: An object is to provide a light-emitting element with a favorable lifetime.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: February 23, 2021
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Yusuke Takita, Satoshi Seo, Tsunenori Suzuki, Harue Osaka
  • Patent number: 10930856
    Abstract: A novel organic compound is provided. In particular, a novel organic compound which can improve the element characteristics of a light-emitting element is provided. A novel light-emitting element with high emission efficiency, low driving voltage, and high reliability is provided. An organic compound including an amine skeleton and a benzo[b]naphtho[1,2-d]furan skeleton is provided. A light-emitting element including the organic compound is provided.
    Type: Grant
    Filed: February 6, 2020
    Date of Patent: February 23, 2021
    Inventors: Sachiko Kawakami, Yusuke Takita, Tsunenori Suzuki, Satoshi Seo
  • Patent number: 10916707
    Abstract: An object of one embodiment of the present invention is to provide a novel organic compound. The organic compound is a triarylamine derivative. The triarylamine derivative has an aryl group including a skeleton in which a naphthyl group is bonded to a naphthylene group. The other two aryl groups are each independently a phenyl group, a biphenyl group, or a terphenyl group. These groups may each have a substituent. As the substituent, an alkyl group having 1 to 6 carbon atoms or a cycloalkyl group having 3 to 6 carbon atoms can be selected.
    Type: Grant
    Filed: December 27, 2017
    Date of Patent: February 9, 2021
    Inventors: Sachiko Kawakami, Anna Tada, Yusuke Takita, Tsunenori Suzuki, Naoaki Hashimoto, Satoshi Seo
  • Publication number: 20210028371
    Abstract: A novel light-emitting device is provided. A light-emitting device with high emission efficiency is provided. A light-emitting device having a long lifetime is provided. A light-emitting device with low driving voltage is provided. The light-emitting device includes an anode, a cathode, and an EL layer between the anode and the cathode. The EL layer includes a light-emitting layer and an electron-transport layer. The electron-transport layer is positioned between the light-emitting layer and the cathode. The electron-transport layer contains an electron-transport material. The electron-transport material is an organic compound including a first skeleton, a second skeleton, and a third skeleton. The first skeleton has a function of transporting electrons. The second skeleton has a function of accepting holes. The third skeleton includes a monocyclic ?-electron deficient heteroaromatic ring.
    Type: Application
    Filed: July 24, 2020
    Publication date: January 28, 2021
    Inventors: Takumu OKUYAMA, Naoaki HASHIMOTO, Yusuke TAKITA, Hiroshi KADOMA, Tsunenori SUZUKI, Satoshi SEO, Tomoya HIROSE
  • Publication number: 20200176686
    Abstract: A novel organic compound is provided. In particular, a novel organic compound which can improve the element characteristics of a light-emitting element is provided. A novel light-emitting element with high emission efficiency, low driving voltage, and high reliability is provided. An organic compound including an amine skeleton and a benzo[b]naphtho[1,2-d]furan skeleton is provided. A light-emitting element including the organic compound is provided.
    Type: Application
    Filed: February 6, 2020
    Publication date: June 4, 2020
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Sachiko Kawakami, Yusuke Takita, Tsunenori Suzuki, Satoshi Seo
  • Publication number: 20200140422
    Abstract: An organic compound has a benzonaphthofuran skeleton and is represented by General Formula (G1). In General Formula (G1), A represents a pyrene skeleton. In the case where the pyrene skeleton has a substituent, the substituent is a diarylamino group including two substituted or unsubstituted aryl groups each having 6 to 13 carbon atoms, a substituted or unsubstituted aryl group having 6 to 13 carbon atoms, an alkyl group having 1 to 7 carbon atoms, a substituted or unsubstituted monocyclic saturated hydrocarbon group having 3 to 20 carbon atoms, or a substituted or unsubstituted polycyclic saturated hydrocarbon group having 7 to 10 carbon atoms. The two aryl groups of the diarylamino group may be the same or different.
    Type: Application
    Filed: April 20, 2018
    Publication date: May 7, 2020
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Takuya HARUYAMA, Sachiko KAWAKAMI, Naoaki HASHIMOTO, Yusuke TAKITA, Tsunenori SUZUKI, Satoshi SEO
  • Patent number: 10636976
    Abstract: A novel compound in which a delayed fluorescence component due to TTA accounts for a high proportion of emissive components is provided. The organic compound includes an anthracene skeleton, an arylene group, and a substituted or unsubstituted heterocyclic group including a carbazole skeleton. The anthracene skeleton and the substituted or unsubstituted heterocyclic group including the carbazole skeleton are bonded to each other through the arylene group. The anthracene skeleton includes an aryl group at the 2-position or the 3-position.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: April 28, 2020
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Satoshi Seo, Tsunenori Suzuki, Tomohiro Kubota, Naoaki Hashimoto, Yusuke Takita
  • Patent number: 10559760
    Abstract: A novel organic compound is provided. In particular, a novel organic compound which can improve the element characteristics of a light-emitting element is provided. A novel light-emitting element with high emission efficiency, low driving voltage, and high reliability is provided. An organic compound including an amine skeleton and a benzo[b]naphtho[1,2-d]furan skeleton is provided. A light-emitting element including the organic compound is provided.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: February 11, 2020
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Sachiko Kawakami, Yusuke Takita, Tsunenori Suzuki, Satoshi Seo
  • Patent number: 10559762
    Abstract: To provide a novel fluorescent organic compound (a fluorescent compound). The organic compound is a substance that emits fluorescence and an organic compound (a host material) in which TTA can occur efficiently. In the organic compound, triplet excitons, which do not contribute to light emission, can be efficiently converted into singlet excitons. The use of such an organic compound can increase emission efficiency of a light-emitting element.
    Type: Grant
    Filed: October 4, 2018
    Date of Patent: February 11, 2020
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kyoko Takeda, Harue Osaka, Yusuke Takita, Naoaki Hashimoto, Tsunenori Suzuki, Kunihiko Suzuki, Satoshi Seo
  • Publication number: 20200028095
    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 includes an anthracene skeleton and a carbazole skeleton, and is represented by the following general formula (G1). (In the formula, Ar represents a substituted or unsubstituted arylene group having 6 to 13 carbon atoms, and when the arylene group has substituents, the substituents may be bonded to each other to form a ring. Furthermore, Cz represents a substituted or unsubstituted carbazole skeleton. Furthermore, each of R1 to R9 and R11 to R17 independently represents any of hydrogen, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 6 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 13 carbon atoms. Furthermore, at least one of the following pairs may form a fused ring: R12 and R13; R14 and R15; R15 and R16; or R16 and R17.
    Type: Application
    Filed: January 26, 2018
    Publication date: January 23, 2020
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Hiroshi KADOMA, Hiroki SUZUKI, Yusuke TAKITA, Tsunenori SUZUKI, Satoshi SEO
  • Publication number: 20190393420
    Abstract: A novel organic compound is provided. An organic compound that emits light with high chromaticity is provided. An organic compound that emits blue light with high chromaticity is provided. An organic compound with high emission efficiency is provided. An organic compound having an excellent hole-transport property is provided. An organic compound having high reliability is provided. An organic compound that has a naphtho[2,3-b;7,6-b?]bisbenzofuran skeleton or a naphtho[2,3-b;7,6-b?]bisbenzothiophene skeleton and has a molecular weight of less than or equal to 5000 is provided. The present inventors have found that the organic compound is a significantly effective skeleton as a luminophor of a light-emitting element. The organic compound has high emission efficiency and exhibits favorable blue light emission; thus, a light-emitting element using the organic compound can be a blue light-emitting element with high emission efficiency.
    Type: Application
    Filed: March 8, 2018
    Publication date: December 26, 2019
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Kyoko TAKEDA, Harue OSAKA, Satoshi SEO, Tsunenori SUZUKI, Naoaki HASHIMOTO, Yusuke TAKITA
  • Publication number: 20190372045
    Abstract: A novel light-emitting element is provided. A light-emitting element with a long lifetime is provided. A light-emitting element with high emission efficiency is provided. In the light-emitting element, an EL layer includes a hole-injection layer, a first hole-transport layer, a second hole-transport layer, a third hole-transport layer, a light-emitting layer, a first electron-transport layer, and a second electron-transport layer in this order; the hole-injection layer includes an organic acceptor; the LUMO level of the host material is higher than that of the first electron-transport layer; the LUMO level of the second electron-transport layer is higher than that of the first electron-transport layer; the host material is a substance including a condensed aromatic ring skeleton; and the first and second electron-transport layers each include a substance having a heteroaromatic ring skeleton.
    Type: Application
    Filed: August 15, 2019
    Publication date: December 5, 2019
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Satoshi Seo, Tsunenori SUZUKI, Yusuke TAKITA, Naoaki HASHIMOTO