Patents by Inventor Satoshi Seo

Satoshi Seo 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: 20230089346
    Abstract: A light-emitting device with high heat resistance is provided. The light-emitting layer device includes an anode, a cathode; and an EL layer between the anode and the cathode. The EL layer includes a light-emitting layer and a first layer. The first layer is between the light-emitting layer and the cathode. The light-emitting layer is in contact with the first layer. The light-emitting layer includes a first organic compound and a light-emitting substance. The first layer includes a second organic compound. The light-emitting substance is a substance that emits blue light. The first organic compound is an organic compound including a fused aromatic hydrocarbon ring. The second organic compound is an organic compound including a heteroaromatic ring skeleton including one selected from a pyridine ring, a diazine ring, and a triazine ring; and a bicarbazole skeleton.
    Type: Application
    Filed: July 15, 2022
    Publication date: March 23, 2023
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Sachiko KAWAKAMI, Yui YOSHIYASU, Nobuharu OHSAWA, Tsunenori SUZUKI, Toshiki SASAKI, Naoaki HASHIMOTO, Tomohiro KUBOTA, Satoshi SEO
  • Publication number: 20230079236
    Abstract: A light-emitting element includes a light-emitting layer including a guest, an n-type host and a p-type host between a pair of electrodes, where the difference between the energy difference between a triplet excited state and a ground state of the n-type host (or p-type host) and the energy difference between a triplet excited state and a ground state of the guest is 0.15 eV or more. Alternatively, in such a light-emitting element, the LUMO level of the n-type host is higher than the LUMO level of the guest by 0.1 eV or more, or the HOMO level of the p-type host is lower than the HOMO level of the guest by 0.1 eV or more.
    Type: Application
    Filed: November 15, 2022
    Publication date: March 16, 2023
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei YAMAZAKI, Satoshi SEO, Nobuharu OHSAWA, Satoko SHITAGAKI, Hideko INOUE, Hiroshi KADOMA, Harue OSAKA, Kunihiko SUZUKI, Yasuhiko TAKEMURA
  • Publication number: 20230076945
    Abstract: A light-emitting device having favorable heat resistance is provided. The light-emitting device includes an anode, a cathode, and an EL layer positioned between the first anode and the cathode. The EL layer includes a light-emitting layer and a first layer. The first layer is positioned between the light-emitting layer and the cathode. The light-emitting layer and the first layer are in contact with each other. The light-emitting layer contains a first organic compound, a second organic compound, and a light-emitting substance. The first layer contains a third organic compound. The first organic compound and the third organic compound each have an electron-transport property. The second organic compound has a hole-transport property. The light-emitting substance emits red light. The first organic compound is represented by General Formula (G100). The third organic compound is represented by General Formula (G300).
    Type: Application
    Filed: July 12, 2022
    Publication date: March 9, 2023
    Inventors: Sachiko KAWAKAMI, Yui YOSHIYASU, Nobuharu OHSAWA, Tsunenori SUZUKI, Toshiki SASAKI, Naoaki HASHIMOTO, Tomohiro KUBOTA, Satoshi SEO
  • Patent number: 11600789
    Abstract: A light-emitting element having high emission efficiency is provided. A light-emitting element having a low driving voltage is provided. A novel compound which can be used for a transport layer or as a host material or a light-emitting material of a light-emitting element is provided. A novel compound with a benzofuropyrimidine skeleton is provided. Also provided is a light-emitting element which includes the compound with the benzofuropyrimidine skeleton between a pair of electrodes.
    Type: Grant
    Filed: June 25, 2020
    Date of Patent: March 7, 2023
    Inventors: Hideko Inoue, Miki Kanamoto, Hiromi Seo, Satoshi Seo, Tatsuyoshi Takahashi, Tomoka Nakagawa
  • Publication number: 20230062265
    Abstract: A light-receiving device in which an increase in driving voltage is inhibited is provided. Any of the following light-receiving devices is provided: a light-receiving device that includes a light-receiving layer between a pair of electrodes and in which the light-receiving layer includes an active layer, a buffer layer, and an electron-transport layer, the buffer layer is between the active layer and the electron-transport layer and is in contact with the active layer, and the buffer layer includes an organic compound having an electron-withdrawing group; a light-receiving device that includes a light-receiving layer between a pair of electrodes and in which the light-receiving layer includes an active layer, a buffer layer, and an electron-transport layer, the buffer layer is between the active layer and the electron-transport layer and is in contact with the active layer, and the buffer layer includes a heteroaromatic compound having an electron-withdrawing group.
    Type: Application
    Filed: June 16, 2022
    Publication date: March 2, 2023
    Inventors: Yasuhiro NIIKURA, Daisuke KUBOTA, Taisuke KAMADA, Sachiko KAWAKAMI, Anna TADA, Satoshi SEO
  • Patent number: 11588125
    Abstract: A reliable light-emitting element with low driving voltage is provided. The light-emitting element includes an electron-injection layer between a cathode and a light-emitting layer. The electron-injection layer is a mixed film of a transition metal and an organic compound having an unshared electron pair. An atom of the transition metal and the organic compound form SOMO.
    Type: Grant
    Filed: August 10, 2021
    Date of Patent: February 21, 2023
    Inventors: Nobuharu Ohsawa, Satoshi Seo
  • Patent number: 11587982
    Abstract: One object of this invention is to provide a novel light-emitting device with low power consumption. The light-emitting device includes a first light-emitting element and a second light-emitting element. The first light-emitting element includes a first electrode, a second electrode, and a light-emitting layer. The second light-emitting element includes the first electrode, a third electrode, and the light-emitting layer. The second electrode comprises only a first conductive film, and the third electrode comprises a second conductive film and a third conductive film. The first electrode has a function of reflecting light. The second conductive film has functions of reflecting light and transmitting light. The first conductive film and the third conductive film each have a function of transmitting light.
    Type: Grant
    Filed: July 21, 2020
    Date of Patent: February 21, 2023
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Nobuharu Ohsawa, Satoshi Seo, Toshiki Sasaki
  • Patent number: 11587904
    Abstract: A display panel includes a plurality of light-emitting elements. Light emitted from a first light-emitting element has a CIE 1931 chromaticity coordinate x of greater than 0.680 and less than or equal to 0.720 and a CIE 1931 chromaticity coordinate y of greater than or equal to 0.260 and less than or equal to 0.320. Light emitted from a second light-emitting element has a CIE 1931 chromaticity coordinate x of greater than or equal to 0.130 and less than or equal to 0.250 and a CIE 1931 chromaticity coordinate y of greater than 0.710 and less than or equal to 0.810. Light emitted from a third light-emitting element has a CIE 1931 chromaticity coordinate x of greater than or equal to 0.120 and less than or equal to 0.170 and a CIE 1931 chromaticity coordinate y of greater than or equal to 0.020 and less than 0.060.
    Type: Grant
    Filed: November 19, 2020
    Date of Patent: February 21, 2023
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Daiki Nakamura, Yusuke Nishido, Satoshi Seo, Toshiki Sasaki, Ryohei Yamaoka, Akihiro Kaita
  • Publication number: 20230037397
    Abstract: A near-infrared organic EL device with favorable efficiency is provided. A light-emitting device including a first electrode, a second electrode, and an EL layer is provided; in which the EL layer is positioned between the first electrode and the second electrode; in which the EL layer emits light having a peak of an emission spectrum in a wavelength range of greater than or equal to 750 nm and less than or equal to 1000 nm; in which one of the first electrode and the second electrode is an electrode having a transmitting property with respect to light with a peak wavelength of the emission spectrum of the EL layer; in which a first layer is provided in contact with a surface of the electrode having a transmitting property, which is opposite to a surface facing the EL layer; in which the first layer contains an organic compound; and in which the first layer has the local maximum value of an extinction coefficient k in the visible light region.
    Type: Application
    Filed: November 18, 2020
    Publication date: February 9, 2023
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Takeyoshi WATABE, Airi UEDA, Nobuharu OHSAWA, Satoshi SEO
  • Patent number: 11574961
    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: May 29, 2019
    Date of Patent: February 7, 2023
    Inventors: Tsunenori Suzuki, Yasuhiro Niikura, Tomoya Hirose, Satoshi Seo
  • Patent number: 11572332
    Abstract: A novel compound represented by formula (G1) is provided. In formula (G1), A represents a substituted or unsubstituted condensed aromatic ring having 10 to 30 carbon atoms or a substituted or unsubstituted condensed heteroaromatic ring having 10 to 30 carbon atoms, and Z1 to Z3 each independently have a structure represented by formula (Z-1) or (Z-2). In formula (Z-1), X1 and X2 each independently represent any one of an alkyl group having 3 to 10 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 10 carbon atoms, a cycloalkyl group having a bridge structure and having 7 to 10 carbon atoms, and a trialkylsilyl group having 3 to 12 carbon atoms. In addition, Ar1 to Ar4 each independently represent a substituted or unsubstituted aromatic hydrocarbon group having 6 to 13 carbon atoms, and at least one of Ar1 to Ar4 has the same substituent as X1 or X2.
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: February 7, 2023
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Takuya Haruyama, Nobuharu Ohsawa, Satoshi Seo
  • Patent number: 11566273
    Abstract: Provided is a method for producing a cell contained base, the method being capable of providing a cell contained base highly accurately controlled in number of nucleic acid molecules contained in a low-concentration nucleic acid standard sample, the method including a liquid droplet discharging step of discharging a cell suspension in the form of a liquid droplet with a liquid droplet discharging unit onto a base including at least one cell contained region; a cell number counting step of counting a number of cells contained in the liquid droplet with a plurality of sensors from two or more directions while the liquid droplet is flying into the cell contained region; and a liquid droplet landing step of landing the liquid droplet in the at least one cell contained region in a manner that a predetermined number of cells are located in the at least one cell contained region.
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: January 31, 2023
    Assignee: RICOH COMPANY, LTD.
    Inventors: Satoshi Izumi, Manabu Seo, Takahiko Matsumoto, Hiroki Somada, Ryuya Mashiko, Takeshi Orito, Hiroki Nakae
  • Patent number: 11569466
    Abstract: A novel light-emitting element is provided. A light-emitting element with a long lifetime is provided. A light-emitting element with high emission efficiency is provided. In the light-emitting element, an EL layer includes a hole-injection layer, a first hole-transport layer, a second hole-transport layer, a third hole-transport layer, a light-emitting layer, a first electron-transport layer, and a second electron-transport layer in this order; the hole-injection layer includes an organic acceptor; the LUMO level of the host material is higher than that of the first electron-transport layer; the LUMO level of the second electron-transport layer is higher than that of the first electron-transport layer; the host material is a substance including a condensed aromatic ring skeleton; and the first and second electron-transport layers each include a substance having a heteroaromatic ring skeleton.
    Type: Grant
    Filed: August 15, 2019
    Date of Patent: January 31, 2023
    Inventors: Satoshi Seo, Tsunenori Suzuki, Yusuke Takita, Naoaki Hashimoto
  • Publication number: 20230029353
    Abstract: An organic semiconductor device with low driving voltage is provided. The light-emitting device includes an anode, a cathode, and an EL layer between the anode and the cathode. The EL layer includes a hole-transport layer and alight-emitting layer. The hole-transport layer is positioned between the anode and the light-emitting layer. The hole-transport layer is not in contact with the anode. The hole-transport layer includes a transport layer material for a light-emitting device and the GSP_slope that is a potential gradient of a surface potential of an evaporated film of the material is higher than or equal to 20 (mV/nm).
    Type: Application
    Filed: May 9, 2022
    Publication date: January 26, 2023
    Inventors: Takeyoshi WATABE, Hiromi SEO, Airi UEDA, Yuta KAWANO, Tomohiro KUBOTA, Yasushi KITANO, Takao TOSU, Nobuharu OHSAWA, Satoshi SEO
  • Publication number: 20230026341
    Abstract: An EL layer includes a low refractive index layer comprising an organic compound and a light-emitting layer comprising a light-emitting substance. The organic compound has an ordinary refractive index of 1.50 to 1.75 with respect to light at 455 nm to 465 nm, or an ordinary refractive index of 1.45 to 1.70 with respect to light at 633 nm. Given that a wavelength corresponding to an intensity 1/e times a maximum peak intensity in an emission spectrum of the light-emitting substance is ?n, a shortest ?n in a range of wavelengths longer than a maximum peak wavelength ?max of the light-emitting substance is ?1, and a longest ?n in a range of wavelengths shorter than ?max is ?2, a difference between ?1 and ?2 is greater than or equal to 5 nm and less than or equal to 45 nm.
    Type: Application
    Filed: June 22, 2022
    Publication date: January 26, 2023
    Inventors: Takeyoshi WATABE, Nobuharu OHSAWA, Satoshi SEO
  • Publication number: 20230025460
    Abstract: A light-emitting device with high resistance to heat in a fabrication process is provided. The light-emitting device includes an EL layer between an anode and a cathode. The EL layer includes at least a light-emitting layer and an electron-transport layer that includes a first electron-transport layer in contact with the light-emitting layer and a second electron-transport layer in contact with the first electron-transport layer. The first electron-transport layer includes a first heteroaromatic compound including at least one heteroaromatic ring. The second electron-transport layer includes a second heteroaromatic compound that includes at least one heteroaromatic ring and is different from the first heteroaromatic compound. The first heteroaromatic compound has a difference of 20° C. or less between the crystallization temperature (Tpc) of a powder state and the crystallization temperature (Ttc) of a thin film state. The second heteroaromatic compound has a difference of 100° C. or less between Tpc and Ttc.
    Type: Application
    Filed: June 28, 2022
    Publication date: January 26, 2023
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Yui Yoshiyasu, Sachiko KAWAKAMI, Naoaki HASHIMOTO, Tsunenori SUZUKI, Satoshi SEO
  • Publication number: 20230027613
    Abstract: A novel organic compound is provided. That is, a novel organic compound that is effective in improving element characteristics and reliability is provided. The organic compound is represented by General Formula (G1) having a dibenzobenzofuroquinoxaline skeleton or a dibenzobenzothienoquinoxaline skeleton. In General Formula (G1), Q represents O or S, at least one of R1 to R12 represents a first group having a substituted or unsubstituted condensed aromatic ring or condensed heteroaromatic ring having 3 to 30 carbon atoms, and the other or others of R1 to R12 each independently represent any one of hydrogen, a halogeno group, a hydroxy group, an amino group, a nitro group, and a group having 1 to 50 carbon atoms.
    Type: Application
    Filed: August 23, 2022
    Publication date: January 26, 2023
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Tomoya YAMAGUCHI, Hideko YOSHIZUMI, Hiromitsu KIDO, Airi UEDA, Satoshi SEO
  • Patent number: 11563231
    Abstract: To provide a storage battery including a carbon-based material. To provide a graphene compound film having desired ion conductivity and mechanical strength while preventing direct contact between electrodes in a storage battery. To achieve long-term reliability. A lithium-ion storage battery includes a positive electrode, a negative electrode, an exterior body, and a separator between the positive electrode and the negative electrode. In the lithium-ion storage battery, one of the positive electrode and the negative electrode is wrapped in a first film, and the positive electrode, the negative electrode, and the separator are stored in the exterior body. The first film may include a first region in which the first film includes a first functional group. The first film may further include a second region in which the first film includes a second functional group different from the first functional group. The first film may be a graphene compound film.
    Type: Grant
    Filed: June 8, 2020
    Date of Patent: January 24, 2023
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Teppei Oguni, Satoshi Seo, Hiroshi Kadoma
  • Patent number: 11563177
    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: December 4, 2020
    Date of Patent: January 24, 2023
    Inventors: Hiroshi Kadoma, Kaori Ogita, Tsunenori Suzuki, Satoshi Seo
  • Patent number: 11563191
    Abstract: A light-emitting element having high emission efficiency which includes a fluorescent material as a light-emitting substance is provided. A light-emitting element includes a pair of electrodes and an EL layer between the pair of electrodes. The EL layer includes a light-emitting layer. The light-emitting layer includes a host material and a guest material. The host material has a difference of more than 0 eV and less than or equal to 0.2 eV between a singlet excitation energy level and a triplet excitation energy level. The guest material is capable of emitting fluorescence. The triplet excitation energy level of the host material is higher than a triplet excitation energy level of the guest material.
    Type: Grant
    Filed: July 8, 2020
    Date of Patent: January 24, 2023
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Satoshi Seo, Nobuharu Ohsawa, Shunsuke Hosoumi, Takahiro Ishisone