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: 11183815
    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 7, 2018
    Date of Patent: November 23, 2021
    Assignee: KOALA TECH INC.
    Inventors: Sangarange Don Atula Sandanayaka, Fatima Bencheikh, Kenichi Goushi, Jean-Charles Ribierre, Chihaya Adachi, Takashi Fujihara, Toshinori Matsushima
  • Patent number: 11165027
    Abstract: A compound represented by the following formula (1) is an excellent near-infrared emitter. R1 to R6 are H or a substituent and R7 is represented by the following formula (2). Ar11 is an aryl group, R11 is a substituent other than an aryl group and n11 is 1 or more.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: November 2, 2021
    Assignees: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, UNIVERSITE D'AIX-MARSEILLE
    Inventors: Jean-Charles Ribierre, Sangarange Don Atula Sandanayaka, DaeHyeon Kim, Chihaya Adachi, Anthony D'Aleo, Frederic Fages, Elena Zaborova
  • Patent number: 11101433
    Abstract: A light-emitting material containing a compound represented by the general formula (1) is capable of achieving an excellent external quantum efficiency on using in an organic light-emitting device. R1 to R8 represent a hydrogen atom or a substituent, provided that at least one of R1 to R8 represents a substituted or unsubstituted carbazolyl group; and Ar1 to Ar3 represent a substituted or unsubstituted aromatic ring or heteroaromatic ring.
    Type: Grant
    Filed: November 12, 2014
    Date of Patent: August 24, 2021
    Assignee: KYULUX, INC.
    Inventors: Hiroyuki Tanaka, Hiroki Noda, Katsuyuki Shizu, Masatsugu Taneda, Chihaya Adachi
  • Patent number: 11101440
    Abstract: An organic electroluminescent device having a structure of at least an anode 2, a light-emitting layer 3, an electron transporting layer 5 and a cathode 6 layered in that order, and having a charge trap concentration reducing layer 4 in the interface between the light-emitting layer 3 and the electron transporting layer 5 can suppress performance deterioration with time in driving to prolong the lifetime thereof.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: August 24, 2021
    Assignee: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION
    Inventors: Ping Kuen Daniel Tsang, Chihaya Adachi
  • Publication number: 20210202864
    Abstract: An organic electroluminescent device having an anode, a cathode, and a light-emitting layer between the anode and the cathode, wherein the light-emitting layer contains at least a first organic compound, a second organic compound and a third organic compound satisfying the following formula (A), the second organic compound is a delayed fluorescent material, and the third organic compound is a light-emitting material, has a high light emission efficiency. Formula (A): ES1(A)>ES1(B)>ES1(C) wherein ES1(A), ES1(B) and ES1(C) each represent a lowest excited singlet energy level of the first organic compound, the second organic compound and the third organic compound, respectively.
    Type: Application
    Filed: June 13, 2019
    Publication date: July 1, 2021
    Inventors: Hajime NAKANOTANI, Chihaya ADACHI, Hiroki NODA, Yoshitake SUZUKI, Naoto NOTSUKA, Hiroko NOMURA, Ayataka ENDO, Ping Kuen Daniel TSANG
  • Publication number: 20210202851
    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: Application
    Filed: August 7, 2019
    Publication date: July 1, 2021
    Inventors: Hajime NAKANOTANI, Takuji HATAKEYAMA, Yasuhiro KONDO, Yasuyuki SASADA, Motoki YANAI, Chin-Yiu CHAN, Masaki TANAKA, Hiroki NODA, Chihaya ADACHI, Yoshitake SUZUKI, Naoto NOTSUKA
  • Publication number: 20210184138
    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: November 1, 2018
    Publication date: June 17, 2021
    Inventors: Chuanjiang QIN, Toshinori MATSUSHIMA, Chihaya ADACHI
  • Patent number: 11038118
    Abstract: A compound having a structure represented by the following general formula emits delayed fluorescent light and is useful as a light-emitting material. Three or more of R1, R2, R4, and R5 each represent a 9-carbazolyl group, a 10-phenoxazyl group, or a 10-phenothiazyl group, and the balance thereof and R3 each represent a hydrogen atom or a substituent, but exclude a cyano group. R3 excludes an aryl group, a heteroaryl group, and an alkynyl group.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: June 15, 2021
    Assignees: KYULUX, INC., KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION
    Inventors: Keiro Nasu, Chihaya Adachi, Hajime Nakanotani, Hiroko Nomura
  • Publication number: 20210074927
    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: Application
    Filed: October 15, 2020
    Publication date: March 11, 2021
    Inventors: Hajime NAKANOTANI, Chihaya ADACHI, Takahiro HIGUCHI, Taro FURUKAWA
  • Patent number: 10934248
    Abstract: A compound represented by the general formula (11) is useful as a light-emitting material. R1, R2, R4 and R5 represent a group represented by the general formula (2), R11 to R20 represent a hydrogen atom or a substituent, and L12 represents a substituted or unsubstituted arylene group or a substituted or unsubstituted heteroarylene group.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: March 2, 2021
    Assignee: KYULUX, INC.
    Inventors: Chihaya Adachi, Takuma Yasuda, Ryosuke Kondo, Masaki Numata, Jun-Yun Kim, Inseob Park
  • Patent number: 10916711
    Abstract: A compound that emits fluorescence and delayed fluorescence is provided as a material for an organic electroluminescent device of high efficiency, and an organic photoluminescent device and an organic electroluminescent device of high efficiency and high luminance are provided using this compound. The spiro compound of a general formula (1) having an azafluorene ring structure is used as a constituent material of at least one organic layer in an organic electroluminescent device that includes a pair of electrodes, and one or more organic layers sandwiched between the pair of electrodes.
    Type: Grant
    Filed: March 2, 2015
    Date of Patent: February 9, 2021
    Assignees: Hodogaya Chemical Co., Ltd., Kyulux, Inc.
    Inventors: Chihaya Adachi, Takuma Yasuda, Tetsuya Nakagawa, Katsuyuki Shizu, Hiroshi Ookuma
  • Publication number: 20210036256
    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: Application
    Filed: July 29, 2020
    Publication date: February 4, 2021
    Applicants: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, HAMAMATSU PHOTONICS K.K.
    Inventors: Chihaya ADACHI, Hajime NAKANOTANI, Takahiko YAMANAKA, Shigeo HARA, Toru HIROHATA
  • Publication number: 20200399246
    Abstract: A charge transport material containing a compound represented by the following formula (1). R1 and R2 each are a fluoroalkyl group, Ar1 and Ar2 each are an aromatic ring, A1 and A2 each are an aryl group substituted with a group having a positive Hammett ?p value or with a phenyl group, or are a substituted or unsubstituted heteroaryl group bonding to Ar1 or Ar2 via a carbon atom, n1 and n2 each are a natural number.
    Type: Application
    Filed: March 13, 2019
    Publication date: December 24, 2020
    Inventors: Linsong CUI, Chihaya ADACHI, Keiro NASU, Ayataka ENDO, Shuo-Hsien CHENG, YuSeok YANG, Hiroko NOMURA
  • Publication number: 20200397921
    Abstract: Luminescent particles with a maximum diameter of less than 100 ?m are produced by stirring an emulsion material, including a host material, an organic luminescent material containing no heavy metal element, a surfactant and water, under conditions that melt the host material, thereby forming an emulsion, and then cooling the emulsion. This method can provide luminescent particles which are highly safe and which exhibit high luminous efficiency in water.
    Type: Application
    Filed: February 20, 2019
    Publication date: December 24, 2020
    Inventors: Youichi TSUCHIYA, Chihaya ADACHI, Koudai IKESUE
  • Patent number: 10862047
    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: August 13, 2014
    Date of Patent: December 8, 2020
    Assignee: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION
    Inventors: Hajime Nakanotani, Chihaya Adachi, Takahiro Higuchi, Taro Furukawa
  • Publication number: 20200343453
    Abstract: A compound having two or more donor groups differing in the structure and a linking group that links these donor groups, wherein the linking group is an aromatic group composed of one or more benzene rings optionally substituted with an alkyl group or a halogeno group, has good light-emitting characteristics.
    Type: Application
    Filed: March 10, 2017
    Publication date: October 29, 2020
    Applicants: Kyushu University, University Corporation, Hodogaya Chemical Co., Ltd.
    Inventors: Youichi TSUCHIYA, Yan GENG, Hin Wai MO, Chihaya ADACHI, Takehiro TAKAHASHI
  • Patent number: 10797242
    Abstract: An organic compound having an excellent electron injection and transport performance is provided as a material for a low-power-consumption organic electroluminescent device. A low-power-consumption organic electroluminescent device is also provided by using the compound. The compound is a compound of general formula (1) or (2) having a substituted bipyridyl and triphenylene ring structure. The organic electroluminescent device includes a pair of electrodes, and one or more organic layers sandwiched between the pair of electrodes, and uses the compound as constituent material of at least one of the organic layers.
    Type: Grant
    Filed: May 24, 2017
    Date of Patent: October 6, 2020
    Assignees: Hodogaya Chemical Co., Ltd., Kyushu University, National University Corporation
    Inventors: Chihaya Adachi, Kazunori Togashi, Norimasa Yokoyama, Shintaro Nomura
  • Publication number: 20200259112
    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: July 6, 2018
    Publication date: August 13, 2020
    Inventors: Toshinori MATSUSHIMA, Chihaya ADACHI, Chuanjiang QIN, Sangarange Don Atula SANDANAYAKA, Fatima BENCHEIKH, Takeshi KOMINO
  • Publication number: 20200235313
    Abstract: Using a compound represented by a general formula (A)m-L-(D)n, a light-emitting device having a high emission efficiency can be provided. L is an (m+n)-valent aromatic linking group; A is a group having a positive Hammett's ?p value; D is a group having a negative Hammett's ?p value; m is an integer of 1 or more; n is an integer of 2 or more. Two of plural D's differ in point of the substituent condition at specific aromatic rings.
    Type: Application
    Filed: February 23, 2018
    Publication date: July 23, 2020
    Inventors: Hajime NAKANOTANI, Hiroki NODA, Chihaya ADACHI, Naoto NOTSUKA, Yoshitake SUZUKI
  • Publication number: 20200220094
    Abstract: Using a perovskite-type compound, an inexpensive host material having a high carrier mobility can be provided. Using a perovskite-type compound as a host material, an inexpensive organic light-emitting device having a high emission efficiency can be realized.
    Type: Application
    Filed: July 24, 2018
    Publication date: July 9, 2020
    Inventors: Toshinori MATSUSHIMA, Chihaya ADACHI, Chuanjiang QIN, Sangarange Don Atula SANDANAYAKA, Fatima BENCHEIKH, Takeshi KOMINO