Patents by Inventor Tsunenori Suzuki

Tsunenori Suzuki 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: 20240124477
    Abstract: A novel organic compound is provided. Alternatively, an organic compound that exhibits light emission with favorable chromaticity is provided. Alternatively, an organic compound that exhibits blue light emission with favorable chromaticity is provided. Alternatively, an organic compound with favorable emission efficiency is provided. Alternatively, an organic compound having a high carrier-transport property is provided. Alternatively, an organic compound with favorable reliability is provided. An organic compound including at least one amino group in which any one of a substituted or unsubstituted dibenzofuranyl group, a substituted or unsubstituted dibenzothiophenyl group, and a substituted or unsubstituted carbazolyl group is boneded to any one of a substituted or unsubstituted naphthobisbenzofuran skeleton, a substituted or unsubstituted naphthobisbenzothiophene skeleton, and a substituted or unsubstituted naphthobenzofuranobenzothiophene skeleton is provided.
    Type: Application
    Filed: October 23, 2023
    Publication date: April 18, 2024
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kyoko Takeda, Harue Osaka, Satoshi Seo, Tsunenori Suzuki, Naoaki Hashimoto, Yusuke Takita
  • Patent number: 11963430
    Abstract: An object is to provide a highly reliable display unit having a function of sensing light. The display unit includes a light-receiving device and a light-emitting device. The light-receiving device includes an active layer between a pair of electrodes. The light-emitting device includes a hole-injection layer, a light-emitting layer, and an electron-transport layer between a pair of electrodes. The light-receiving device and the light-emitting device share one of the electrodes, and may further share another common layer between the pair of electrodes. The hole-injection layer is in contact with an anode and contains a first compound and a second compound. The electron-transport property of the electron-transport layer is low; hence, the light-emitting layer is less likely to have excess electrons. Here, the first compound is the material having a property of accepting electrons from the second compound.
    Type: Grant
    Filed: April 14, 2023
    Date of Patent: April 16, 2024
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Taisuke Kamada, Ryo Hatsumi, Daisuke Kubota, Naoaki Hashimoto, Tsunenori Suzuki, Harue Osaka, Satoshi Seo
  • Publication number: 20240114755
    Abstract: A novel display apparatus that is highly convenient, useful, or reliable is provided. The display apparatus includes a first light-emitting device including a first electrode, a first layer, a first unit, and a second electrode and a second light-emitting device including a third electrode, a second layer, a second unit, and a fourth electrode. The first unit is between the first electrode and the second electrode and includes a first light-emitting material. The first layer is between the first unit and the first electrode and is in contact with the first electrode. The third electrode is adjacent to the first electrode. A first gap is between the third electrode and the first electrode. The second unit is between the third electrode and the fourth electrode and includes a second light-emitting material. The second layer is between the second unit and the third electrode and is in contact with the third electrode.
    Type: Application
    Filed: August 23, 2023
    Publication date: April 4, 2024
    Inventors: Nozomu SUGISAWA, Yasumasa YAMANE, Daiki NAKAMURA, Tsunenori SUZUKI, Naoto GOTO, Yasutaka NAKAZAWA
  • Patent number: 11943944
    Abstract: A novel light-emitting device is provided. Alternatively, a light-emitting device having a long driving lifetime at high temperature is provided. The light-emitting device includes an anode, a cathode, and an EL layer positioned between the anode and the cathode. The EL layer includes a first layer, a second layer, a third layer, and a light-emitting layer in this order from the anode side. The first layer includes a first organic compound and a second organic compound. The second layer includes a third organic compound. The third layer includes a fourth organic compound. The light-emitting layer includes a fifth organic compound and an emission center substance. The first organic compound exhibits an electron-accepting property with respect to the second organic compound. A difference between HOMO levels of the fourth organic compound and the fifth organic compound is less than or equal to 0.24 eV.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: March 26, 2024
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Yusuke Takita, Tsunenori Suzuki, Naoaki Hashimoto, Takumu Okuyama, Satoshi Seo
  • Patent number: 11937498
    Abstract: A novel compound is provided. Alight-emitting device having high emission efficiency and a long lifetime is also provided. An organic compound is represented by General Formula (G2), in which a benzo[a]anthracene skeleton is bonded to the 2-position of an anthracene skeleton. In General Formula (G2), R1 to R3, R5 to R12, and R21 to R29 each independently represent any one of hydrogen, an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, and a substituted or unsubstituted aryl group having 6 to 13 carbon atoms in a ring. Another embodiment of the present invention is a light-emitting device including the compound.
    Type: Grant
    Filed: May 22, 2019
    Date of Patent: March 19, 2024
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hiroshi Kadoma, Satoshi Seo, Hiroki Suzuki, Naoaki Hashimoto, Tsunenori Suzuki
  • Patent number: 11930703
    Abstract: A novel organic compound is provided. An organic compound that emits light with high chromaticity is provided. An organic compound that emits blue light with high chromaticity is provided. An organic compound with high emission efficiency is provided. An organic compound having an excellent hole-transport property is provided. An organic compound having high reliability is provided. An organic compound that has a naphtho[2,3-b;7,6-b?]bisbenzofuran skeleton or a naphtho[2,3-b;7,6-b?]bisbenzothiophene skeleton and has a molecular weight of less than or equal to 5000 is provided. The present inventors have found that the organic compound is a significantly effective skeleton as a luminophor of a light-emitting element. The organic compound has high emission efficiency and exhibits favorable blue light emission; thus, a light-emitting element using the organic compound can be a blue light-emitting element with high emission efficiency.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: March 12, 2024
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kyoko Takeda, Harue Osaka, Satoshi Seo, Tsunenori Suzuki, Naoaki Hashimoto, Yusuke Takita
  • Patent number: 11925097
    Abstract: An object is to provide a highly reliable display unit having a function of sensing light. The display unit includes a light-receiving device and a light-emitting device. The light-receiving device includes an active layer between a pair of electrodes. The light-emitting device includes a hole-injection layer, a light-emitting layer, and an electron-transport layer between a pair of electrodes. The light-receiving device and the light-emitting device share one of the electrodes, and may further share another common layer between the pair of electrodes. The hole-injection layer is in contact with an anode and contains a first compound and a second compound. The electron-transport property of the electron-transport layer is low; hence, the light-emitting layer is less likely to have excess electrons. Here, the first compound is the material having a property of accepting electrons from the second compound.
    Type: Grant
    Filed: April 14, 2023
    Date of Patent: March 5, 2024
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Taisuke Kamada, Ryo Hatsumi, Daisuke Kubota, Naoaki Hashimoto, Tsunenori Suzuki, Harue Osaka, Satoshi Seo
  • Patent number: 11925109
    Abstract: A novel organic compound with favorable thermophysical properties is provided. An organic compound represented by General Formula (G1) is provided. At least one of X1 to X5 is a secondary or tertiary alkyl group having 3 to 6 carbon atoms in which a carbon atom bonded to a phenyl group branches. Each of R1 to R7 is independently any of hydrogen, an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 3 to 12 carbon atoms, and an unsubstituted or alkyl-substituted aryl group having 6 to 13 carbon atoms. Ar1 represents a substituted or unsubstituted condensed heteroaromatic ring skeleton having 8 to 60 carbon atoms and composed of two or more aromatic rings, and Ar2 represents a substituted or unsubstituted aryl group having 6 to 25 carbon atoms. Furthermore, n is any of 1 to 3.
    Type: Grant
    Filed: December 9, 2020
    Date of Patent: March 5, 2024
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kyoko Takeda, Harue Osaka, Hiroshi Kadoma, Satoshi Seo, Tsunenori Suzuki, Naoaki Hashimoto
  • Publication number: 20240067664
    Abstract: A novel organic compound that is highly convenient, useful, or reliable is to be provided. The organic compound is represented by General Formula (G0). In General Formula (G0), X and Y each independently represent an oxygen atom or a sulfur atom. Ar1 to Ar4 each independently represent an aromatic ring or a nitrogen-containing heteroaromatic ring, the aromatic ring contains 6 to 10 carbon atoms, and the nitrogen-containing heteroaromatic ring is composed only of one or more six-membered rings and contains 4 to 9 carbon atoms. R, R11, R21, R21, R22, R31, R32, R41, and R42 each independently represent hydrogen, a straight-chain alkyl group having 1 to 6 carbon atoms, a branched alkyl group having 3 to 7 carbon atoms, a substituted or unsubstituted aryl group having 6 to 13 carbon atoms, substituted or unsubstituted diarylamine having 6 to 13 carbon atoms, or substituted or unsubstituted heteroarylamine having 3 to 18 carbon atoms.
    Type: Application
    Filed: July 31, 2023
    Publication date: February 29, 2024
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kyoko Takeda, Harue Osaka, Naoaki Hashimoto, Tsunenori Suzuki
  • Patent number: 11917882
    Abstract: A light-emitting device, an electronic device, or a lighting device with low power consumption and high reliability is provided. The light-emitting device includes a first light-emitting element, a second light-emitting element, a third light-emitting element, and a fourth light-emitting element. The first to fourth light-emitting elements include the same EL layer between an anode and a cathode. The EL layer includes a first light-emitting layer and a second light-emitting layer. The first light-emitting layer contains a fluorescent substance. The peak wavelength of an emission spectrum of the fluorescent substance in a toluene solution of the fluorescent substance is 440 nm to 460 nm, preferably 440 nm to 455 nm. The second light-emitting layer contains a phosphorescent substance. The first light-emitting element exhibits blue emission. The second light-emitting element exhibits green emission. The third light-emitting element exhibits red emission.
    Type: Grant
    Filed: November 25, 2020
    Date of Patent: February 27, 2024
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Satoshi Seo, Toshiki Sasaki, Tsunenori Suzuki, Sachiko Kawakami, Naoaki Hashimoto
  • Patent number: 11917908
    Abstract: A novel organic compound represented by General Formula (G1) is provided. In General Formula (G1), X1 and X2 each independently represent a secondary or tertiary alkyl group having 3 to 6 carbon atoms and having a branched carbon atom which is bonded to a phenyl group. In addition, Ar1 represents a substituted or unsubstituted condensed aromatic ring skeleton having 10 to 60 carbon atoms and composed of two or more rings or a substituted or unsubstituted condensed heteroaromatic ring skeleton having 8 to 60 carbon atoms and composed of two or more rings. Furthermore, Ar2 represents a substituted or unsubstituted aryl group having 6 to 25 carbon atoms. Moreover, n represents any of 1 to 3, and in the case where n is 2 or more, two or more groups bonded to Ar1 may be identical or different.
    Type: Grant
    Filed: December 9, 2020
    Date of Patent: February 27, 2024
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kyoko Takeda, Harue Osaka, Hiroshi Kadoma, Satoshi Seo, Tsunenori Suzuki, Naoaki Hashimoto
  • Patent number: 11903290
    Abstract: A novel display panel that is highly convenient or reliable is provided. The display panel includes a first pixel; the first pixel includes a first display element, a first color conversion layer, and a first absorption layer; the first display element emits first light; the first absorption layer overlaps with the first display element; and the first absorption layer absorbs the first light. Furthermore, the first color conversion layer is sandwiched between the first display element and the first absorption layer; the first color conversion layer converts the first light into second light; and the second light has a spectrum including a high proportion of light with a long wavelength compared with the first light.
    Type: Grant
    Filed: February 1, 2023
    Date of Patent: February 13, 2024
    Inventors: Tsunenori Suzuki, Yasuhiro Niikura, Tomoya Hirose, Satoshi Seo
  • Patent number: 11889759
    Abstract: Provided is a novel light-emitting element, a light-emitting element with a long lifetime, or a light-emitting element with high emission efficiency. The light-emitting element includes an EL layer between a pair of electrodes. The EL layer includes at least a light-emitting layer containing a fluorescent substance and a host material, a first electron-transport layer containing a first electron-transport material, and a second electron-transport layer containing a second electron-transport material, which are in contact with each other and in this order. The LUMO level of each of the host material and the second electron-transport material is higher than the LUMO level of the first electron-transport material.
    Type: Grant
    Filed: August 3, 2021
    Date of Patent: January 30, 2024
    Inventors: Satoshi Seo, Tsunenori Suzuki, Naoaki Hashimoto
  • Publication number: 20240023423
    Abstract: A light-emitting element which includes a plurality of light-emitting layers between a pair of electrodes and has low driving voltage and high emission efficiency is provided. A light-emitting element including first to third light-emitting layers between a cathode and an anode is provided. The first light-emitting layer includes a first phosphorescent material and a first electron-transport material; the second light-emitting layer includes a second phosphorescent material and a second electron-transport material; the third light-emitting layer includes a fluorescent material and a third electron-transport material; the first to third light-emitting elements are provided in contact with an electron-transport layer positioned on a cathode side; and a triplet excitation energy level of a material included in the electron-transport layer is lower than triplet excitation energy levels of the first electron-transport material and the second electron-transport material.
    Type: Application
    Filed: June 29, 2023
    Publication date: January 18, 2024
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Tsunenori Suzuki, Naoaki Hashimoto, Eriko Sauo, Satoshi Seo
  • Publication number: 20240008301
    Abstract: A green phosphorescent light-emitting device with a long lifetime is provided. The light-emitting device includes a first electrode, a second electrode, and a light-emitting layer. The light-emitting layer is between the first electrode and the second electrode. The light-emitting layer includes a first organic compound, a second organic compound, and a phosphorescent light-emitting substance. The first organic compound includes a heteroaromatic ring skeleton and an aromatic hydrocarbon group. The second organic compound includes a bicarbazole skeleton. The lowest triplet excited level of the first organic compound is derived from only the aromatic hydrocarbon group. The energy of the lowest triplet excited level of the second organic compound is higher than or equal to 2.20 eV and lower than or equal to 2.65 eV.
    Type: Application
    Filed: June 27, 2023
    Publication date: January 4, 2024
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Toshiki Sasaki, Hiromitsu KIDO, Tsunenori SUZUKI, Nobuharu OHSAWA, Hideko YOSHIZUMI, Satoshi SEO, Satoko NUMATA, Eriko AOYAMA, Yui YOSHIYASU
  • Publication number: 20240008355
    Abstract: A light-emitting device includes a light-emitting layer containing a light-emitting substance and a first organic compound. The light-emitting substance is an organometallic complex containing a central metal and ligands. One of the ligands includes a skeleton formed by a ring A1 and a pyridine ring bonded to each other. The ring A1 represents an aromatic ring or a heteroaromatic ring. The pyridine ring includes an alkyl group having 1 to 6 carbon atoms and being substituted with deuterium. The first organic compound includes an electron-transport skeleton and first and second substituents that are bonded to the electron-transport skeleton. The electron-transport skeleton includes a heteroaromatic ring having two or more nitrogen atoms. The first substituent includes one or both of an aromatic ring and a heteroaromatic ring. The second substituent includes a skeleton having a hole-transport property.
    Type: Application
    Filed: June 27, 2023
    Publication date: January 4, 2024
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Toshiki Sasaki, Hiromitsu Kido, Tsunenori Suzuki, Nobuharu Ohsawa, Hideko Yoshizumi, Satoshi Seo, Satoko Numata, Eriko Aoyama, Yui Yoshiyasu
  • Patent number: 11851594
    Abstract: Provided is a light-emitting element with high emission efficiency including a fluorescent material as a light-emitting substance. In a light-emitting element including a pair of electrodes and an EL layer between the pair of electrodes, a delayed fluorescence component due to triplet-triplet annihilation accounts for 20% or more of light emitted from the EL layer, and the light has at least one emission spectrum peak in the blue wavelength range. The EL layer includes an organic compound in which an energy difference between the lowest singlet excited energy level and the lowest triplet excited energy level is 0.5 eV or more. The EL layer includes a benzo[a]anthracene compound.
    Type: Grant
    Filed: January 20, 2023
    Date of Patent: December 26, 2023
    Inventors: Hiroshi Kadoma, Kaori Ogita, Tsunenori Suzuki, Satoshi Seo
  • Patent number: 11834457
    Abstract: A novel organic compound is provided. Alternatively, an organic compound that exhibits light emission with favorable chromaticity is provided. Alternatively, an organic compound that exhibits blue light emission with favorable chromaticity is provided. Alternatively, an organic compound with favorable emission efficiency is provided. Alternatively, an organic compound having a high carrier-transport property is provided. Alternatively, an organic compound with favorable reliability is provided. An organic compound including at least one amino group in which any one of a substituted or unsubstituted dibenzofuranyl group, a substituted or unsubstituted dibenzothiophenyl group, and a substituted or unsubstituted carbazolyl group is bonded to any one of a substituted or unsubstituted naphthobisbenzofuran skeleton, a substituted or unsubstituted naphthobisbenzothiophene skeleton, and a substituted or unsubstituted naphthobenzofuranobenzothiophene skeleton is provided.
    Type: Grant
    Filed: January 13, 2022
    Date of Patent: December 5, 2023
    Inventors: Kyoko Takeda, Harue Osaka, Satoshi Seo, Tsunenori Suzuki, Naoaki Hashimoto, Yusuke Takita
  • Patent number: 11795182
    Abstract: Provided are a heterocyclic compound which emits blue light and is represented by General Formula (G1) below, and a light-emitting element, a light-emitting device, an electronic device and a lighting device which are formed using the heterocyclic compound represented by General Formula (G1) below. The use of the heterocyclic compound represented by General Formula (G1) makes it possible to provide a light-emitting element which has high emission efficiency, and also a light-emitting device, an electronic device and a lighting device which have reduced power consumption.
    Type: Grant
    Filed: December 14, 2021
    Date of Patent: October 24, 2023
    Inventors: Hiroki Suzuki, Tsunenori Suzuki, Satoshi Seo
  • Publication number: 20230309385
    Abstract: A novel organic compound is provided. Alternatively, an organic compound that emits light with favorable chromaticity is provided. Alternatively, an organic compound that emits blue light with favorable chromaticity is provided. Alternatively, a light-emitting element with favorable emission efficiency is provided. Alternatively, an organic compound with an excellent carrier-transport property is provided. The organic compound includes any of a substituted or unsubstituted dibenzofurobisbenzofuran skeleton, a substituted or unsubstituted dibenzothienobisbenzothiophene skeleton, a substituted or unsubstituted benzobisbenzothienobenzofuran skeleton, and a substituted or unsubstituted dibenzothienobisbenzofuran skeleton and one or two amino groups.
    Type: Application
    Filed: May 6, 2021
    Publication date: September 28, 2023
    Inventors: Kyoko TAKEDA, Kunihiko SUZUKI, Harue OSAKA, Satoshi SEO, Tsunenori SUZUKI, Takuya ISHIMOTO, Naoaki HASHIMOTO