Patents by Inventor Toshinari Ogiwara

Toshinari Ogiwara 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: 10851055
    Abstract: A compound is represented by a formula (1) below, in which k is an integer of 0 or more, m is an integer of 1 or more, n is an integer of 2 or more. L is a substituted or unsubstituted aromatic hydrocarbon ring having 6 to 30 ring carbon atoms, CN is a cyano group, and D1 and D2 are each independently represented by one of a formula (2), a formula (3) and formula (3x) below, D1 and D2 being optionally mutually the same or different.
    Type: Grant
    Filed: January 10, 2020
    Date of Patent: December 1, 2020
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Satomi Tasaki, Masahiro Kawamura, Toshinari Ogiwara, Hitoshi Kuma, Kei Yoshida, Keiji Okinaka
  • Publication number: 20200365812
    Abstract: An organic electroluminescence device includes: an anode; an emitting layer; and a cathode. The emitting layer contains a first compound and a second compound, the first compound being a delayed fluorescent compound, the second compound being a compound represented by a formula (2).
    Type: Application
    Filed: August 17, 2018
    Publication date: November 19, 2020
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Kei YOSHIZAKI, Ryota TAKAHASHI, Toshinari OGIWARA, Yuichiro KAWAMURA
  • Publication number: 20200358000
    Abstract: A compound is represented by a formula (2) below.
    Type: Application
    Filed: October 3, 2017
    Publication date: November 12, 2020
    Inventors: Masatoshi SAITO, Kei Yoshida, Yuichiro Kawamura, Toshinari Ogiwara, Kei Yoshizaki
  • Patent number: 10811616
    Abstract: An organic electroluminescence device includes: an anode; an emitting layer; and a cathode, the emitting layer containing a first material, a second material and a third material, the first material being a fluorescent material, the second material being a delayed fluorescent material, the third material having a singlet energy larger than a singlet energy of the second material.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: October 20, 2020
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Toshinari Ogiwara, Kei Yoshida, Ryohei Hashimoto, Yumiko Mizuki
  • Publication number: 20200321540
    Abstract: An organic electroluminescence device includes an anode, an emitting layer, and a cathode. The emitting layer contains a first compound, a second compound, and a third compound. An ionization potential Ip1 of the first compound and an ionization potential Ip2 of the second compound satisfy a relationship represented by a numerical expression (Numerical Expression 1) below. The first compound is a delayed fluorescent compound. The second compound is a fluorescent compound. The third compound has an electron mobility of 1×10?8 cm2/(V·s) or more. 0?Ip2?Ip1?0.
    Type: Application
    Filed: August 9, 2017
    Publication date: October 8, 2020
    Applicant: IDEMITSU KOSAN CO. LTD.
    Inventors: Kei YOSHIZAKI, Toshinari OGIWARA
  • Patent number: 10707434
    Abstract: The organic electroluminescence device includes an anode, a cathode, and at least an emitting layer between the anode and the cathode. The emitting layer includes a first host material, a second host material, and a phosphorescent dopant material. The first host material is a compound represented by a formula (1) below and the second host material is a compound represented by a formula (2) below.
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: July 7, 2020
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Kazuki Nishimura, Toshinari Ogiwara, Kumiko Hibino, Tetsuya Inoue, Mitsunori Ito
  • Publication number: 20200148639
    Abstract: A compound is represented by a formula (1) below, in which k is an integer of 0 or more, m is an integer of 1 or more, n is an integer of 2 or more. L is a substituted or unsubstituted aromatic hydrocarbon ring having 6 to 30 ring carbon atoms, CN is a cyano group, and D1 and D2 are each independently represented by one of a formula (2), a formula (3) and formula (3x) below, D1 and D2 being optionally mutually the same or different.
    Type: Application
    Filed: January 10, 2020
    Publication date: May 14, 2020
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Satomi Tasaki, Masahiro Kawamura, Toshinari Ogiwara, Hitoshi Kuma, Kei Yoshida, Keiji Okinaka
  • Patent number: 10651398
    Abstract: An organic electroluminescence device includes an anode, a cathode, a first organic layer interposed between the anode and the cathode, a second organic layer interposed between the first organic layer and the cathode, and a bipolar layer interposed between the first organic layer and the second organic layer and having bipolar characteristics, in which at least one of the first organic layer and the second organic layer includes the first compound and the second compound, the first compound exhibits delayed fluorescence, and an energy gap T77K(M2) at 77[K] of the second compound is larger than an energy gap T77K(M1) at 77[K] of the first compound.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: May 12, 2020
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Toshinari Ogiwara, Kei Yoshida
  • Patent number: 10590080
    Abstract: A compound is represented by a formula (1) below, in which k is an integer of 0 or more, m is an integer of 1 or more, n is an integer of 2 or more. L is a substituted or unsubstituted aromatic hydrocarbon ring having 6 to 30 ring carbon atoms, CN is a cyano group, and D1 and D2 are each independently represented by one of a formula (2), a formula (3) and formula (3x) below, D1 and D2 being optionally mutually the same or different.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: March 17, 2020
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Satomi Tasaki, Masahiro Kawamura, Toshinari Ogiwara, Hitoshi Kuma, Kei Yoshida, Keiji Okinaka
  • Publication number: 20200035922
    Abstract: An organic electroluminescence device includes an anode, an emitting layer, and a cathode. The emitting layer contains a first compound and a second compound, the first compound being a thermally activated delayed fluorescent compound and represented by a formula (1) below, the second compound being a compound represented by a formula (2) below, a singlet energy S1(M1) of the first compound and a singlet energy S1(M2) of the second compound satisfying a relationship of a Numerical Formula 1 below.
    Type: Application
    Filed: March 26, 2018
    Publication date: January 30, 2020
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Toshinari OGIWARA, Kei YOSHIZAKI, Masatoshi SAITO, Yuichiro KAWAMURA
  • Patent number: 10547009
    Abstract: An organic electroluminescence device includes an anode, an emitting layer, and a cathode, the emitting layer including a delayed-fluorescent first compound represented by a formula (1), and a fluorescent second compound. In the formula (1), Ar1 is a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms and the like, and ArEWG is a substituted or unsubstituted heteroaryl group having 5 to 30 ring atoms and including one or more nitrogen atom in the ring, or an aryl group having 6 to 30 ring carbon atoms and substituted by one or more cyano group, at least one of Ar1 and ArX being at least one group selected from the group consisting of groups represented by a formula (1a) and the like.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: January 28, 2020
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Kei Yoshida, Ryohei Hashimoto, Toshinari Ogiwara, Yuichiro Kawamura, Masatoshi Saito
  • Publication number: 20200020868
    Abstract: An organic EL device includes a pair of electrodes and an organic compound layer between pair of electrodes. The organic compound layer includes an emitting layer including a first material, a second material and a third material, in which singlet energy EgS(H) of the first material, singlet energy EgS(H2) of the second material, and singlet energy EgS(D) of the third material satisfy a specific relationship.
    Type: Application
    Filed: September 23, 2019
    Publication date: January 16, 2020
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Toshinari Ogiwara, Ryo Tsuchiya
  • Publication number: 20190337872
    Abstract: A compound is represented by a formula (20) below.
    Type: Application
    Filed: November 9, 2017
    Publication date: November 7, 2019
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Masatoshi SAITO, Kei YOSHIDA, Yuichiro KAWAMURA, Toshinari OGIWARA, Kei YOSHIZAKI
  • Patent number: 10461264
    Abstract: An organic EL device includes a pair of electrodes and an organic compound layer between pair of electrodes. The organic compound layer includes an emitting layer including a first material, a second material and a third material, in which singlet energy EgS(H) of the first material, singlet energy EgS(H2) of the second material, and singlet energy EgS(D) of the third material satisfy a specific relationship.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: October 29, 2019
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Toshinari Ogiwara, Ryo Tsuchiya
  • Publication number: 20190288221
    Abstract: An organic electroluminescence device includes an anode, a second organic layer, a first organic layer, and a cathode in this order. The first organic layer contains a first compound and a second compound. The second organic layer contains a third compound. The first compound is a compound represented by a formula (1). The second compound is a delayed fluorescent compound. The third compound is a compound represented by a formula (3). In the formula (1), X is a nitrogen atom or a carbon atom bonded to Y, Y being a hydrogen atom or a substituent. In the formula (3), n is an integer ranging from 1 to 4, XB is a group represented by a formula (3A). In the formula (3A), Ar1 and Ar2 are each independently a monovalent or polyvalent aromatic hydrocarbon group, and Cz is a group represented by a formula (3B-1) or the like.
    Type: Application
    Filed: March 18, 2019
    Publication date: September 19, 2019
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Kei Yoshizaki, Toshinari Ogiwara, Yuichiro Kawamura, Keiichi Yasukawa, Kei Yoshida
  • Publication number: 20190245152
    Abstract: An organic electroluminescence device includes an anode, an emitting layer, and a cathode. The emitting layer contains a first compound, a second compound, and a third compound, the first compound being a fluorescent compound, the second compound being a delayed fluorescent compound, the third compound being a compound represented by a formula (3). A singlet energy S1(M1) of the first compound, a singlet energy S1(M2) of the second compound, and a singlet energy S1(M3) of the third compound satisfy a relationship of a Numerical Formula 1. In the formula (3), X1 to X14 each independently represent a nitrogen atom or CR80. XA is NR95, a sulfur atom or an oxygen atom.
    Type: Application
    Filed: February 6, 2019
    Publication date: August 8, 2019
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Masatoshi SAITO, Toshinari OGIWARA, Kei YOSHIZAKI, Yuichiro KAWAMURA
  • Patent number: 10351765
    Abstract: An organic electroluminescence device includes an anode, an emitting layer and a cathode, in which the emitting layer includes a first compound and a second compound, the first compound is a delayed fluorescent compound, the second compound is a fluorescent compound, an emission quantum efficiency of the first compound is 70% or less, and an ionization potential Ip1 of the first compound and an ionization potential Ip2 of the second compound satisfy a relationship of 0?Ip2?Ip1?0.8 eV.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: July 16, 2019
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Toshinari Ogiwara, Yuichiro Kawamura
  • Patent number: 10297761
    Abstract: An organic electroluminescence device includes: an anode; a cathode; and a single- or multi-layer organic layer interposed between the anode and the cathode. The organic layer includes at least one emitting layer containing a dopant material represented by a formula below. In the formula, X1 to X5 each independently represent CR1 or a nitrogen atom, at least one of X1 to X5 is a nitrogen atom, L1 represents a divalent aromatic hydrocarbon group or a divalent heterocyclic group, A and B each independently represents a cyclic structure, at least one of the cyclic structure A and the cyclic structure B has a substituent, and R1 represents an aryl group, alkyl group or the like.
    Type: Grant
    Filed: December 10, 2013
    Date of Patent: May 21, 2019
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Masahiro Kawamura, Hitoshi Kuma, Toshinari Ogiwara, Satomi Tasaki, Yumiko Mizuki, Kazuki Nishimura, Tomoharu Hayama
  • Publication number: 20190109285
    Abstract: An organic electroluminescence device includes an anode, a cathode and an emitting layer, in which the emitting layer includes a first compound and a second compound and each of the first compound and the second compound is a compound emitting thermally activated delayed fluorescence.
    Type: Application
    Filed: December 5, 2018
    Publication date: April 11, 2019
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Masahiro Kawamura, Yumiko Mizuki, Toshinari Ogiwara, Hitoshi Kuma
  • Patent number: 10249826
    Abstract: An organic electroluminescence device includes an anode, an emitting layer and a cathode, in which the emitting layer includes a first compound and a second compound. The first compound is a delayed-fluorescent compound represented by a formula (1) below. The second compound includes at least one of a partial structure represented by a formula (21) below and a partial structure represented by a formula (22) below in one molecule.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: April 2, 2019
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Toshinari Ogiwara, Kei Yoshida, Satomi Tasaki