Patents by Inventor Chihaya Adachi

Chihaya Adachi 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: 12015248
    Abstract: Disclosed are a current excitation type organic semiconductor laser containing a pair of electrodes, an organic laser active layer and an optical resonator structure between the pair of electrodes and a laser having an organic layer on a distributed feedback grating structure. The lasers include a continuous-wave laser, a quasi-continuous-wave laser and an electrically driven semiconductor laser diode.
    Type: Grant
    Filed: May 11, 2023
    Date of Patent: June 18, 2024
    Assignees: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, KOALA TECH INC.
    Inventors: Chihaya Adachi, Sangarange Don Atula Sandanayaka, Toshinori Matsushima, Kou Yoshida, Jean-Charles Ribierre, Fatima Bencheikh, Kenichi Goushi, Takashi Fujihara
  • Patent number: 11991920
    Abstract: An organic-inorganic perovskite satisfying ET<ET1 and ES-ET?0.1 eV has a high emission efficiency. ES represents the excited singlet energy level in emission of an inorganic component, ET represents the excited triplet energy level in emission of an inorganic component, ET1 represents the excited triplet energy level in emission of an organic component.
    Type: Grant
    Filed: January 5, 2023
    Date of Patent: May 21, 2024
    Assignee: KYULUX, INC.
    Inventors: Chuanjiang Qin, Toshinori Matsushima, Chihaya Adachi
  • Publication number: 20240121973
    Abstract: When ?EST of at least one of a donor compound and an acceptor compound to form an exciplex is 0.35 eV or less, the driving lifetime of an exciplex light-emitting device can be improved.
    Type: Application
    Filed: October 6, 2020
    Publication date: April 11, 2024
    Inventors: Hajime NAKANOTANI, Thanh Ba NGUYEN, Chihaya ADACHI, Hayato KAKIZOE, Ayataka ENDO
  • Patent number: 11955776
    Abstract: Disclosed is a current-injection organic semiconductor laser diode comprising a pair of electrodes, an optical resonator structure, and one or more organic layers including a light amplification layer composed of an organic semiconductor, which has a sufficient overlap between the distribution of exciton density and the electric field intensity distribution of the resonant optical mode during current injection to emit laser light.
    Type: Grant
    Filed: February 16, 2023
    Date of Patent: April 9, 2024
    Assignees: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, KOALA Tech Inc.
    Inventors: Sangarange Don Atula Sandanayaka, Fatima Bencheikh, Kenichi Goushi, Jean-Charles Ribierre, Chihaya Adachi, Takashi Fujihara, Toshinori Matsushima
  • Patent number: 11944010
    Abstract: An organic electroluminescent device having an anode, a cathode, and a light emitting layer between the anode and the cathode, in which the light emitting layer contains a first organic compound, a second organic compound, and a third organic compound that satisfy the following expression (A), the second organic compound is a delayed fluorescent material, and the third organic compound is a light emitting material, is capable of enhancing the light emission efficiency. ES1(A), ES1(B) and ES1(C) represent a lowest, singlet excitation energy level of the first, second and third organic compound, respectively.
    Type: Grant
    Filed: June 29, 2022
    Date of Patent: March 26, 2024
    Assignee: KYULUX, INC.
    Inventors: Hajime Nakanotani, Chihaya Adachi, Takahiro Higuchi, Taro Furukawa
  • Patent number: 11937495
    Abstract: An organic light-emitting device containing both a compound represented by the following general formula (1) and a compound represented by the following general formula (2) has a high light emission efficiency. The rings a to c each are a benzene ring that can be optionally condensed, R1 and R2 each represent a substituted or unsubstituted aryl group, etc., four of R31 to R35 each are a substituted or unsubstituted carbazol-9-yl group, but all of these four are not the same, and the remaining one is a hydrogen atom, a cyano group, etc.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: March 19, 2024
    Assignees: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, KWANSEI GAKUIN EDUCATIONAL FOUNDATION, KYULUX, INC.
    Inventors: Hajime Nakanotani, Takuji Hatakeyama, Yasuhiro Kondo, Yasuyuki Sasada, Motoki Yanai, Chin-Yiu Chan, Masaki Tanaka, Hiroki Noda, Chihaya Adachi, Yoshitake Suzuki, Naoto Notsuka
  • Patent number: 11930654
    Abstract: An organic light-emitting device having a perovskite layer having a thickness of 50 nm or more has a low drive voltage and a high power efficiency, and can suppress interelectrode short-circuiting and current leakage.
    Type: Grant
    Filed: March 2, 2023
    Date of Patent: March 12, 2024
    Assignee: KYULUX, INC.
    Inventors: Toshinori Matsushima, Chihaya Adachi, Chuanjiang Qin, Sangarange Don Atula Sandanayaka, Fatima Bencheikh, Takeshi Komino
  • Patent number: 11925046
    Abstract: Provided is a light-emitting device including an organic light-emitting element and a control unit that controls the organic light-emitting element. The organic light-emitting element includes a first electrode, a second electrode, and an organic light-emitting layer which is disposed between the first electrode and the second electrode and in which separation of charges occurs due to incidence of excited light. The control unit changes a potential difference between the first electrode and the second electrode so that recoupling of the charges occurs, in a second period after passage of a delay period from a first period in which the excited light is incident to the organic light-emitting layer.
    Type: Grant
    Filed: July 29, 2020
    Date of Patent: March 5, 2024
    Assignees: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, HAMAMATSU PHOTONICS K.K.
    Inventors: Chihaya Adachi, Hajime Nakanotani, Takahiko Yamanaka, Shigeo Hara, Toru Hirohata
  • Patent number: 11909177
    Abstract: Disclosed are a current excitation type organic semiconductor laser containing a pair of electrodes, an organic laser active layer and an optical resonator structure between the pair of electrodes and a laser having an organic layer on a distributed feedback grating structure. The lasers include a continuous-wave laser, a quasi-continuous-wave laser and an electrically driven semiconductor laser diode.
    Type: Grant
    Filed: February 17, 2022
    Date of Patent: February 20, 2024
    Assignees: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, KOALA TECH INC.
    Inventors: Chihaya Adachi, Sangarange Don Atula Sandanayaka, Toshinori Matsushima, Kou Yoshida, Jean-Charles Ribierre, Fatima Bencheikh, Kenichi Goushi, Takashi Fujihara
  • Publication number: 20240057354
    Abstract: An organic light-receiving element includes an organic light-receiving layer containing a plurality of organic semiconductor molecules. Each of the plurality of organic semiconductor molecules is a molecule in which an excited state enabling reverse intersystem crossing from a lowest excited triplet state to a lowest excited singlet state is formed in each of the plurality of organic semiconductor molecules due to irradiation with light.
    Type: Application
    Filed: January 17, 2022
    Publication date: February 15, 2024
    Applicants: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, HAMAMATSU PHOTONICS K.K.
    Inventors: Chihaya ADACHI, Hajime NAKANOTANI, Takahiko YAMANAKA, Shigeo HARA
  • Publication number: 20240023437
    Abstract: Provided is an organic electroluminescent device that has a long device lifetime and is stable. The organic electroluminescent device has a light emitting layer containing first to third compounds satisfying the following formulae. ES1 is a lowest excited singlet energy and EHOMO(n) is a HOMO energy. ES1(1)>ES1(2)>ES1(3) 0 eV<EHOMO(3)-EHOMO(2)<0.
    Type: Application
    Filed: November 17, 2021
    Publication date: January 18, 2024
    Inventors: YiTing LEE, Masaki TANAKA, Chin-Yiu CHAN, Youichi TSUCHIYA, Hajime NAKANOTANI, Chihaya ADACHI, Yu INADA
  • Publication number: 20240002352
    Abstract: A high-efficiency near-infrared emitting organic EL device may be provided, using a compound represented by the following general formula. At least one of R1 to R4 is *-Ar-D, or R1 and R2, R2 and R3, or R3 and R4 bond to each other to form an aromatic ring having D. D represents a donor group, and Ar represents an arylene group.
    Type: Application
    Filed: November 2, 2021
    Publication date: January 4, 2024
    Inventors: Umamahesh BALIJAPALLI, Ryo NAGATA, Youichi TSUCHIYA, Hajime NAKANOTANI, Chihaya ADACHI
  • Publication number: 20230283050
    Abstract: Disclosed are a current excitation type organic semiconductor laser containing a pair of electrodes, an organic laser active layer and an optical resonator structure between the pair of electrodes and a laser having an organic layer on a distributed feedback grating structure. The lasers include a continuous-wave laser, a quasi-continuous-wave laser and an electrically driven semiconductor laser diode.
    Type: Application
    Filed: May 11, 2023
    Publication date: September 7, 2023
    Inventors: Chihaya ADACHI, Sangarange Don Atula SANDANAYAKA, Toshinori MATSUSHIMA, Kou YOSHIDA, Jean-Charles RIBIERRE, Fatima BENCHEIKH, Kenichi GOUSHI, Takashi FUJIHARA
  • Publication number: 20230225147
    Abstract: An organic light-emitting device having a perovskite layer having a thickness of 50 nm or more has a low drive voltage and a high power efficiency, and can suppress interelectrode short-circuiting and current leakage.
    Type: Application
    Filed: March 2, 2023
    Publication date: July 13, 2023
    Inventors: Toshinori MATSUSHIMA, Chihaya ADACHI, Chuanjiang QIN, Sangarange Don Atula SANDANAYAKA, Fatima BENCHEIKH, Takeshi KOMINO
  • Publication number: 20230198230
    Abstract: Disclosed is a current-injection organic semiconductor laser diode comprising a pair of electrodes, an optical resonator structure, and one or more organic layers including a light amplification layer composed of an organic semiconductor, which has a sufficient overlap between the distribution of exciton density and the electric field intensity distribution of the resonant optical mode during current injection to emit laser light.
    Type: Application
    Filed: February 16, 2023
    Publication date: June 22, 2023
    Inventors: Sangarange Don Atula SANDANAYAKA, Fatima BENCHEIKH, Kenichi GOUSHI, Jean-Charles RIBIERRE, Chihaya ADACHI, Takashi FUJIHARA, Toshinori MATSUSHIMA
  • Publication number: 20230157149
    Abstract: An organic-inorganic perovskite satisfying ET<ET1 and ES-ET?0.1 eV has a high emission efficiency. ES represents the excited singlet energy level in emission of an inorganic component, ET represents the excited triplet energy level in emission of an inorganic component, ET1 represents the excited triplet energy level in emission of an organic component.
    Type: Application
    Filed: January 5, 2023
    Publication date: May 18, 2023
    Inventors: Chuanjiang QIN, Toshinori MATSUSHIMA, Chihaya ADACHI
  • Publication number: 20230143779
    Abstract: A compound represented by the formula (1) has excellent lasing properties. G1 and G2 are H or substituent; FL1 and FL2 are represented by the formula (2); BT is represented by the formula (4); and n1, n2 and m are 1 to 5.
    Type: Application
    Filed: February 9, 2021
    Publication date: May 11, 2023
    Inventors: Anthony D'ALEO, Jean Charles Maurice RIBIERRE, Fatima BENCHEIKH, Virginie Simone Francoise PLACIDE, Masashi MAMADA, Chihaya ADACHI
  • Patent number: 11637244
    Abstract: A compound represented by the following general formula is excellent in light emission properties. R1 and R2 each independently represent a fluorinated alkyl group, D represents a substituent in which Hammett's ?p value is negative, and A represents a substituent in which Hammett's ?p value is positive.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: April 25, 2023
    Assignees: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, KYULUX, INC.
    Inventors: Yan Geng, Chihaya Adachi, Hajime Nakanotani, Naoto Notsuka, Keiro Nasu
  • Patent number: 11626710
    Abstract: Disclosed is a current-injection organic semiconductor laser diode comprising a pair of electrodes, an optical resonator structure, and one or more organic layers including a light amplification layer composed of an organic semiconductor, which has a sufficient overlap between the distribution of excitor density and the electric field intensity distribution of the resonant optical mode during current injection to emit laser light.
    Type: Grant
    Filed: October 19, 2021
    Date of Patent: April 11, 2023
    Assignees: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, KOALA TECH INC.
    Inventors: Sangarange Don Atula Sandanayaka, Fatima Bencheikh, Kenichi Goushi, Jean-Charles Ribierre, Chihaya Adachi, Takashi Fujihara, Toshinori Matsushima
  • Patent number: 11618730
    Abstract: Using a compound that contains a structure where a carbazol-9-yl group substituted with a perfluoroalkyl group at the 2-position and the 7-position and a structural unit having a positive Hammett constant ?p (but excluding an aromatic hydrocarbon group) bond to each other directly or via a ?-conjugated linking group, wherein at least a part of the carbazol-9-yl group and at least a part of the structural unit having a positive Hammett constant ?p and, if any, the ?-conjugated linking group form a ?-electron conjugated system, an organic light emitting device having a high emission efficiency can be provided.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: April 4, 2023
    Assignee: TOYOBO CO., LTD.
    Inventors: Masayuki Yokoyama, Kazutake Hagiya, Chihaya Adachi