Patents by Inventor Hiroaki ITOI

Hiroaki ITOI 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: 20240074307
    Abstract: An organic light emitting device including an anode; a hole transport region on the anode; an emission layer on the hole transport region; an electron transport region on the emission layer; and a cathode on the electron transport region, wherein the hole transport region includes: a first hole transport layer including a first hole transport material represented by the following Formula 1 or a second hole transport material represented by the following Formula 2; and a second hole transport layer on the first hole transport layer, the second hole transport layer including a third hole transport material represented by the following Formula 3 or a fourth hole transport material represented by the following Formula 4:
    Type: Application
    Filed: September 25, 2023
    Publication date: February 29, 2024
    Inventors: Yoshimasa FUJITA, Shuri SATO, Hiroaki ITOI
  • Publication number: 20240023429
    Abstract: Provided are a monoamine compound and a light emitting element including the same.
    Type: Application
    Filed: January 31, 2023
    Publication date: January 18, 2024
    Inventors: Ichinori TAKADA, Akinori YAMATANI, Ichiro IMADA, Hiroaki ITOI
  • Publication number: 20240023436
    Abstract: There is provided an organic electroluminescence device including: an anode; a cathode; a first emitting layer provided between the anode and the cathode and containing a first compound; and a second emitting layer provided between the first emitting layer and the cathode and containing a second compound, in which at least one of the first emitting layer or the second emitting layer contains a compound having at least one deuterium atom, at least one of the first emitting layer or the second emitting layer contains a compound having a fused ring that includes four or more rings, and the first emitting layer and the second emitting layer are in direct contact with each other.
    Type: Application
    Filed: March 11, 2021
    Publication date: January 18, 2024
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Satomi TASAKI, Hiroaki ITOI, Taro YAMAKI, Maiko IIDA, Kazuki NISHIMURA, Yuki NAKANO
  • Patent number: 11871656
    Abstract: An organic electroluminescence device includes a first electrode, a hole transport region on the first electrode, an emission layer on the hole transport region, an electron transport region on the emission layer, and a second electrode on the electron transport region.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: January 9, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hideo Miyake, Masatsugu Ueno, Xiulan Jin, Ichinori Takada, Takuya Uno, Hiroaki Itoi
  • Publication number: 20240008363
    Abstract: A compound represented by the following formula (1).
    Type: Application
    Filed: November 17, 2021
    Publication date: January 4, 2024
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Hiroaki ITOI, Taro YAMAKI, Maiko IIDA, Shintaro BAN, Takamoto MORITA, Yu KUDO
  • Patent number: 11839148
    Abstract: An organic electroluminescence device includes an anode, a cathode, a first emitting layer, and a second emitting layer disposed between the first emitting layer and the cathode, the first emitting layer containing a first host material in a form of a first compound represented by a formula (101) below, the second emitting layer containing a second host material in a form of a second compound represented by a formula (2) below, the first emitting layer and the second emitting layer being in direct contact with each other.
    Type: Grant
    Filed: April 26, 2021
    Date of Patent: December 5, 2023
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Satomi Tasaki, Kazuki Nishimura, Yuki Nakano, Hiroaki Itoi
  • Patent number: 11805697
    Abstract: An organic electroluminescence device includes a first electrode, a hole transport region on the first electrode, an emission layer on the hole transport region, an electron transport region on the emission layer, and a second electrode on the electron transport region.
    Type: Grant
    Filed: September 16, 2022
    Date of Patent: October 31, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hideo Miyake, Masatsugu Ueno, Xiulan Jin, Ichinori Takada, Takuya Uno, Hiroaki Itoi
  • Publication number: 20230345816
    Abstract: A compound represented by the formula (12X). In the formula (12X), Py1 and Py2 each independently represent a substituted or unsubstituted 1-pyrenyl group, L1 and L2 each independently represent a substituted or unsubstituted phenylene group or a substituted or unsubstituted naphthylene group. When L1 and L2 each independently represent a substituted or unsubstituted phenylene group, -L1-L2- in the formula (12X) represents a group represented by one of the formulae (13-1) to (13-6), (10-1), (20-1), and (30-1). When L1 and L2 each independently represent a substituted or unsubstituted naphthylene group, a bonding position of the naphthylene group in L1 is different from a bonding position of the naphthylene group in L2.
    Type: Application
    Filed: November 26, 2020
    Publication date: October 26, 2023
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Yuki NAKANO, Taro YAMAKI, Hiroaki ITOI, Takamoto MORITA, Tomoki KATO, Nozomi TAJIMA, Satomi TASAKI, Kazuki NISHIMURA
  • Publication number: 20230329025
    Abstract: An organic electroluminescence device includes: an emitting zone provided between an anode and a cathode; and a hole transporting zone provided between the anode and the emitting zone. The emitting zone includes at least one emitting layer, and a first host material, a second host material, and an emitting compound are contained in a single emitting layer included in the at least one emitting layer. The first host material and the second host material are each independently a compound represented by a formula (1). The first host material and the second host material are mutually different. At least one organic layer included in the hole transporting zone contains a third compound represented by a formula (EB1).
    Type: Application
    Filed: March 13, 2023
    Publication date: October 12, 2023
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Hiroaki ITOI, Yusuke TAKAHASHI, Shota TANAKA, Takuto FUKAMI, Tsukasa SAWATO
  • Publication number: 20230301177
    Abstract: A compound represented by the following formula (1): where the symbols in the formula (1) are defined in the description, an organic electroluminescent device containing the compound, and an electronic device including the organic electroluminescent device.
    Type: Application
    Filed: March 14, 2023
    Publication date: September 21, 2023
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Takeshi IKEDA, Takuto FUKAMI, Hiroaki ITOI, Yusuke TAKAHASHI, Shota TANAKA, Yongguk LEE, Tsukasa SAWATO
  • Publication number: 20230242465
    Abstract: A compound represented by a formula (1) and having at least one deuterium atom is provided. In the formula (1), n is 1 to 4, L1 is a divalent group or a group represented by a formula (11) and R111 to R119 and R211 to R219 are each independently a hydrogen atom or a substituent, where the compound represented by the formula (1) does not include a group represented by —N(R906) (R907) and R906 and R907 are each independently a hydrogen atom, an alkyl group having 1 to 50 carbon atoms, or the like. In the formula (11), X13 is an oxygen atom or a sulfur atom, Y1 to Y8 are each independently CR300 or a nitrogen atom, and two of R300 are a single bond bonded with *a or other L1 and a single bond bonded with *b or other L1.
    Type: Application
    Filed: March 11, 2021
    Publication date: August 3, 2023
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Yuki NAKANO, Satomi TASAKI, Kazuki NISHIMURA, Hiroaki ITOI
  • Patent number: 11716901
    Abstract: An organic electroluminescence device comprising an amine compound is represented by Formula 1 as a hole transport material. where Ar1, Ar2, Ar3, and L1 are as defined in the specification.
    Type: Grant
    Filed: November 11, 2020
    Date of Patent: August 1, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hideo Miyake, Hiroaki Itoi, Takuya Uno, Masatsugu Ueno, Xiulan Jin, Ichinori Takada
  • Publication number: 20230200222
    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: February 22, 2023
    Publication date: June 22, 2023
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Hiroaki ITOI, Tasuku HAKETA, Yusuke TAKAHASHI, Shota TANAKA, Hirokatsu ITO
  • Patent number: 11678569
    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: Grant
    Filed: March 25, 2022
    Date of Patent: June 13, 2023
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Hiroaki Itoi, Tasuku Haketa, Yusuke Takahashi, Shota Tanaka, Hirokatsu Ito
  • Publication number: 20230180597
    Abstract: The invention provides a compound capable of improving more the capabilities of organic EL devices, an organic electroluminescent device having more improved device capabilities, and an electronic device including such an organic electroluminescent device. The compound is represented by the following formula (1): wherein N*, *a1 to *a3, *b1 to *b3, m1 to m3, n1 to n3, R1A to R5A, R1B to R5B, R11A to R15A, R11B to R15B, R21A to R25A, R21B to R25B, R31 to R35, R36 to R38, R39 to R42, R43 to R47, Ar1 and Ar2 are as defined in the specification; the organic electroluminescent device includes the compound; and the electronic device includes such an organic electroluminescent device.
    Type: Application
    Filed: October 26, 2022
    Publication date: June 8, 2023
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Shota TANAKA, Yusuke TAKAHASHI, Tasuku HAKETA, Hiroaki ITOI, Takuto FUKAMI, Tsukasa SAWATO
  • Publication number: 20230085328
    Abstract: A compound represented by the following formula (1A) or (1B): (the symbols in the formulae (1A) and (1B) have the same meaning as defined in the specification), an organic electroluminescent device containing the compound, and an electronic device including the organic electroluminescent device.
    Type: Application
    Filed: July 7, 2022
    Publication date: March 16, 2023
    Applicants: IDEMITSU KOSAN CO.,LTD., National University Corporation Tokai National Higher Education and Research System
    Inventors: Masato MITANI, Keita SEDA, Taro YAMAKI, Shota TANAKA, Tsukasa SAWATO, Masatoshi SAITO, Hiroaki ITOI, Tasuku HAKETA, Kei YOSHIDA, Sayaka MIZUTANI, Kenichiro ITAMI, Kei MURAKAMI, Satoshi MATSUBARA, Yoshito KOGA
  • Patent number: 11600780
    Abstract: An organic electroluminescence device including: an anode, a cathode, and at least one emitting layer between the cathode and the anode, wherein the emitting layer contains a first host material, a second host material, and a dopant material, the first host material is a compound having at least one deuterium atom, and the emitting layer contains the first host material in the proportion of 1% by mass or more.
    Type: Grant
    Filed: June 7, 2021
    Date of Patent: March 7, 2023
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Satomi Tasaki, Taro Yamaki, Hiroaki Itoi, Yuki Nakano, Yuichiro Kawamura
  • Publication number: 20230055036
    Abstract: An organic electroluminescence device includes a first electrode, a hole transport region on the first electrode, an emission layer on the hole transport region, an electron transport region on the emission layer, and a second electrode on the electron transport region.
    Type: Application
    Filed: September 16, 2022
    Publication date: February 23, 2023
    Inventors: Hideo MIYAKE, Masatsugu UENO, Xiulan JIN, Ichinori TAKADA, Takuya UNO, Hiroaki ITOI
  • Publication number: 20230047477
    Abstract: An organic electroluminescence device comprising: an anode, a cathode, and an emitting region between the anode and the cathode, wherein the emitting region comprises a first emitting layer and a second emitting layer, the first emitting layer and the second emitting layer are directly adjacent to each other, the first emitting layer is between the anode and the second emitting layer, and one of the first emitting layer and the second emitting layer comprises a compound having at least one deuterium atom.
    Type: Application
    Filed: October 16, 2019
    Publication date: February 16, 2023
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Satomi TASAKI, Taro YAMAKI, Hiroaki ITOI, Yuki NAKANO, Yuichiro KAWAMURA, Ryoji MAEDA, Kazuki NISHIMURA, Yongguk LEE
  • Publication number: 20230042023
    Abstract: An organic electroluminescence device including: an anode, a cathode, and at least one emitting layer between the cathode and the anode, wherein the emitting layer contains a first host material, a second host material, and a dopant material, the first host material is a compound having at least one deuterium atom, and the emitting layer contains the first host material in the proportion of 1% by mass or more.
    Type: Application
    Filed: October 16, 2019
    Publication date: February 9, 2023
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Satomi TASAKI, Taro YAMAKI, Hiroaki ITOI, Yuki NAKANO, Yuichiro KAWAMURA