Patents by Inventor Tasuku Haketa

Tasuku Haketa 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: 11489128
    Abstract: An organic electroluminescence device includes: a first emitting layer disposed between an anode and a cathode; a second emitting layer disposed between the first emitting layer and the cathode; and an electron blocking layer disposed between the first emitting layer and the anode, in which the first emitting layer and the second emitting layer are in direct contact with each other; the first emitting layer and the electron blocking layer are in direct contact with each other; the first emitting layer includes a first compound represented by a formula (1) below; the first compound includes at least one group represented by a formula (11) below; the second emitting layer includes a second compound represented by a formula (2); the electron blocking layer includes a third compound; and the third compound satisfies a formula (M1) below.
    Type: Grant
    Filed: August 30, 2021
    Date of Patent: November 1, 2022
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Satomi Tasaki, Kazuki Nishimura, Tasuku Haketa, Ryoji Maeda, Yuki Nakano, Hiroaki Toyoshima
  • Patent number: 11479544
    Abstract: A novel compound represented by formula (1): wherein R1 to R7, R11 to R18, L1 to L3, a to c, n, and Ar are as defined in the description, provides an organic electroluminescence device having a device lifetime further improved.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: October 25, 2022
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Hirokatsu Ito, Tasuku Haketa, Yu Kudo
  • Publication number: 20220324804
    Abstract: To provide a compound for further improving the capability of an organic EL device, an organic electroluminescent device having a further improved device capability, and an electronic device including the organic electroluminescent device, and to provide a compound represented by the following formula (1) or formula (2) (wherein each symbol in each formula is as defined in the description), an organic electroluminescent device containing the compound, and an electronic device including the organic electroluminescent device.
    Type: Application
    Filed: March 30, 2022
    Publication date: October 13, 2022
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Tasuku HAKETA, Kiyoshi IKEDA, Shota TANAKA, Yusuke TAKAHASHI, Takuto FUKAMI, Tsukasa SAWATO
  • Publication number: 20220310930
    Abstract: An organic electroluminescence device includes: a first emitting layer disposed between an anode and a cathode; a second emitting layer disposed between the first emitting layer and the cathode; and an electron blocking layer disposed between the first emitting layer and the anode, in which the first emitting layer and the second emitting layer are in direct contact with each other; the first emitting layer and the electron blocking layer are in direct contact with each other; the first emitting layer includes a first compound represented by a formula (1) below; the first compound includes at least one group represented by a formula (11) below; the second emitting layer includes a second compound represented by a formula (2); the electron blocking layer includes a third compound; and the third compound satisfies a formula (M1) below.
    Type: Application
    Filed: May 17, 2022
    Publication date: September 29, 2022
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Satomi TASAKI, Kazuki NISHIMURA, Tasuku HAKETA, Ryoji MAEDA, Yuki NAKANO, Hiroaki TOYOSHIMA
  • Publication number: 20220263032
    Abstract: An organic electroluminescence device comprising: a cathode, an anode, and an organic layer disposed between the cathode and the anode, wherein the organic layer comprises an emitting layer and an electron-transporting layer, the electron-transporting layer is disposed between the cathode and the emitting layer, the emitting layer comprises a first compound represented by any one of the formulas (21), (41), and (51), and the electron-transporting layer comprises a second compound represented by the following formula (B1):
    Type: Application
    Filed: November 7, 2019
    Publication date: August 18, 2022
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Masatoshi SAITO, Tasuku HAKETA, Yuki NAKANO, Satomi TASAKI, Kazuki NISHIMURA
  • Publication number: 20220246857
    Abstract: Provided are a compound capable of more improving the performance of organic EL devices, an organic electroluminescent device having a more improved device performance, and an electronic device including such an organic electroluminescent device; precisely, a compound represented by the following formula (1) wherein X1, X2, X3, L, R1 to R3, R5 to R8, R11 to R13, R15 to R18, R21 to R24, and R25 to R28 are as defined in the description, an organic electroluminescent device containing the compound, and an electronic device including such an organic electroluminescent device.
    Type: Application
    Filed: May 29, 2020
    Publication date: August 4, 2022
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Yusuke TAKAHASHI, Tasuku HAKETA, Hirokatsu ITO, Yu KUDO
  • Publication number: 20220238805
    Abstract: A compound represented by the following formula (1) wherein the symbols are as defined in the description, and an organic electroluminescent device containing the compound.
    Type: Application
    Filed: March 25, 2022
    Publication date: July 28, 2022
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Hiroaki ITOI, Tasuku HAKETA, Yusuke TAKAHASHI, Shota TANAKA, Hirokatsu ITO
  • Publication number: 20220231231
    Abstract: An organic electroluminescence device includes an emitting region provided between a cathode and an anode, a first anode side organic layer, a second anode side organic layer, and a third anode side organic layer, in which the emitting region includes at least one emitting layer, the second anode side organic layer contains at least one compound different from the compound contained in the third anode side organic layer, the third anode side organic layer has a film thickness of 20 nm or more, and a difference NM2?NM3 between a refractive index NM2 of a constituent material contained in the second anode side organic layer and a refractive index NM3 of a constituent material contained in the third anode side organic layer satisfies a relationship of a numerical formula (Numerical Formula N1) below, NM2?NM3?0.05??(Numerical Formula N1).
    Type: Application
    Filed: October 26, 2021
    Publication date: July 21, 2022
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Masato NAKAMURA, Yusuke TAKAHASHI, Keitaro YAMADA, Tasuku HAKETA, Emiko KAMBE, Kazuki NISHIMURA
  • Patent number: 11393986
    Abstract: A mixture contains a first compound and a second compound, in which the first compound has at least one of a first cyclic structure represented by a formula (11) below and a second cyclic structure represented by a formula (12) below, and the second compound is a compound represented by a formula (21) or a compound represented by a formula (22) below, and a total mass MT of the first and second compounds and a mass M2 of the second compound in the mixture satisfy a relationship of a numerical formula (Numerical Formula 1) below,
    Type: Grant
    Filed: June 14, 2021
    Date of Patent: July 19, 2022
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Ryoji Maeda, Tasuku Haketa, Kazuki Nishimura, Masato Nakamura
  • Publication number: 20220069232
    Abstract: An organic electroluminescence device comprising: a cathode, an anode, and an organic layer disposed between the cathode and the anode, wherein the organic layer comprises an emitting layer and an electron barrier layer, the electron barrier layer is disposed between the anode and the emitting layer and is directly adjacent to the emitting layer, the emitting layer comprises a first compound represented by any one of the specific formulas (21), (41), and (51), and the electron barrier layer comprises a second compound which satisfies the following expression (M1): Ip(HT)?5.67 eV??(M1) wherein in the expression (M1), Ip(HT) is the ionization potential of the second compound.
    Type: Application
    Filed: November 7, 2019
    Publication date: March 3, 2022
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Tasuku HAKETA, Masatoshi SAITO, Yuki NAKANO, Satomi TASAKI, Kazuki NISHIMURA
  • Publication number: 20220045272
    Abstract: The present invention relates to a compound represented by the formula (1): wherein R1 to R4 and L1 to L4 are those defined in the specification, and Ar is the following formula (A) or (B): wherein R11 to R18 and R20 to R29 are those defined in the specification, and Ar is one defined in the specification.
    Type: Application
    Filed: December 3, 2019
    Publication date: February 10, 2022
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Tasuku HAKETA, Hirokatsu ITO, Yu KUDO
  • Publication number: 20210328156
    Abstract: A mixture contains a first compound and a second compound, in which the first compound has at least one of a first cyclic structure represented by a formula (11) below and a second cyclic structure represented by a formula (12) below, and the second compound is a compound represented by a formula (21) or a compound represented by a formula (22) below, and a total mass MT of the first and second compounds and a mass M2 of the second compound in the mixture satisfy a relationship of a numerical formula (Numerical Formula 1) below,
    Type: Application
    Filed: June 14, 2021
    Publication date: October 21, 2021
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Ryoji MAEDA, Tasuku HAKETA, Kazuki NISHIMURA, Masato NAKAMURA
  • Publication number: 20210253546
    Abstract: Provided is an organic electroluminescent element comprising a compound that is represented by formula (1) and having a more improved lifetime. (In the formula, X, R1-R8, R11-R17, R21-R30, L1, L2, n, and Ar1-Ar3 are as defined in the description.
    Type: Application
    Filed: May 10, 2019
    Publication date: August 19, 2021
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Hirokatsu ITO, Tasuku HAKETA, Yu KUDO
  • Patent number: 11069861
    Abstract: A mixture contains a first compound and a second compound, in which the first compound has at least one of a first cyclic structure represented by a formula (11) below and a second cyclic structure represented by a formula (12) below, and the second compound is a compound represented by a formula (21) or a compound represented by a formula (22) below, and a total mass MT of the first and second compounds and a mass M2 of the second compound in the mixture satisfy a relationship of a numerical formula (Numerical Formula 1) below,
    Type: Grant
    Filed: October 22, 2020
    Date of Patent: July 20, 2021
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Ryoji Maeda, Tasuku Haketa, Kazuki Nishimura, Masato Nakamura
  • Patent number: 11053229
    Abstract: A compound represented by formula (1): wherein R1 to R7, R11 to R18, L1 to L3, a to c, n, and Ar are as defined in the description, provides an organic electroluminescence device having an emission efficiency and a device lifetime further improved.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: July 6, 2021
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Hirokatsu Ito, Tasuku Haketa, Yu Kudo, Yumiko Mizuki
  • Patent number: 11053437
    Abstract: Provided are a compound capable of more improving the performance of organic EL devices, an organic electroluminescent device having a more improved device performance, and an electronic device including such an organic electroluminescent device; precisely, a compound represented by the following formula (1); wherein N*, Ar, *a, R11 to R15, R21 to R27, R31 to R37, R41 to R45, and R51 to R55 are as defined in the description, an organic electroluminescent device containing the compound, and an electronic device including such an organic electroluminescent device.
    Type: Grant
    Filed: November 13, 2020
    Date of Patent: July 6, 2021
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Yu Kudo, Tasuku Haketa, Hirokatsu Ito, Yusuke Takahashi
  • Publication number: 20210094937
    Abstract: A compound represented by formula (1) provides an organic electroluminescence device having lifetime further improved: wherein R1 to R9, R11 to R18, R21 to R27, Ar, L1, L2, and L3 are as defined in the description.
    Type: Application
    Filed: March 25, 2019
    Publication date: April 1, 2021
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Hirokatsu ITO, Tasuku HAKETA, Yu KUDO
  • Patent number: 10941144
    Abstract: A compound represented by formula (1): wherein R1 to R8, R12 to R18, R21 to R25, R31 to R48, L1 to L3, and Ar are as defined in the specification, provides a high performance organic electroluminescence device which comprises a cathode, an anode and an organic layer between the cathode and the anode, wherein the organic layer comprises a light emitting layer and at least one layer of the organic layer comprises the compound.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: March 9, 2021
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Tasuku Haketa, Hirokatsu Ito, Yu Kudo
  • Publication number: 20210062082
    Abstract: Provided are a compound capable of more improving the performance of organic EL devices, an organic electroluminescent device having a more improved device performance, and an electronic device including such an organic electroluminescent device; precisely, a compound represented by the following formula (1); wherein N*, Ar, *a, R11 to R15, R21 to R27, R31 to R37, R41 to R45, and R51 to R55 are as defined in the description, an organic electroluminescent device containing the compound, and an electronic device including such an organic electroluminescent device.
    Type: Application
    Filed: November 13, 2020
    Publication date: March 4, 2021
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Yu KUDO, Tasuku HAKETA, Hirokatsu ITO, Yusuke TAKAHASHI
  • Publication number: 20210066611
    Abstract: A compound that is capable of achieving an organic EL device that has a high external quantum efficiency and a long lifetime is to be provided, and a compound represented by the following formula (1) is used (wherein in the formula, R11 to R17, R21 to R28, R31 to R38, R41 to R45, R51 to R55, R61 to R64, and L1 are defined in the description).
    Type: Application
    Filed: January 28, 2019
    Publication date: March 4, 2021
    Applicant: IDEMITSU KOSAN CO,. LTD.
    Inventors: Hirokatsu ITO, Tasuku HAKETA, Yu KUDO