Patents by Inventor Harue Osaka

Harue Osaka 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: 11508912
    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: Grant
    Filed: February 18, 2021
    Date of Patent: November 22, 2022
    Inventors: Shunpei Yamazaki, Satoshi Seo, Nobuharu Ohsawa, Satoko Shitagaki, Hideko Inoue, Hiroshi Kadoma, Harue Osaka, Kunihiko Suzuki, Yasuhiko Takemura
  • Patent number: 11462701
    Abstract: To increase emission efficiency of a fluorescent light-emitting element by efficiently utilizing a triplet exciton generated in a light-emitting layer. The light-emitting layer of the light-emitting element includes at least a host material and a guest material. The triplet exciton generated from the host material in the light-emitting layer is changed to a singlet exciton by triplet-triplet annihilation (TTA). The guest material (fluorescent dopant) is made to emit light by energy transfer from the singlet exciton. Thus, the emission efficiency of the light-emitting element is improved.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: October 4, 2022
    Inventors: Yusuke Nonaka, Satoshi Seo, Harue Osaka, Tsunenori Suzuki, Takeyoshi Watabe
  • Publication number: 20220242834
    Abstract: An electron-transport layer material with a low refractive index is provided. An organic compound represented by General Formula (G1) is provided. In General Formula (G1), one to three of Q1 to Q3 represent N and when one or two of Q1 to Q3 represent N, the remaining two or one of Q1 to Q3 represent CH. Furthermore, R0 represents any of hydrogen, an alkyl group having 1 to 6 carbon atoms, an alicyclic group having 3 to 10 carbon atoms, and a group represented by Formula (G1-1). At least one of R1 to R15 represents a substituted or unsubstituted group including any one of a pyrimidinyl group, a pyrazinyl group, and a triazinyl group, and the others each independently represent any of hydrogen, an alkyl group having 1 to 6 carbon atoms, an alicyclic group having 3 to 10 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 14 carbon atoms forming a ring, and a substituted or unsubstituted pyridinyl group.
    Type: Application
    Filed: January 19, 2022
    Publication date: August 4, 2022
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Keito Tosu, Yuta Kawano, Airi Ueda, Takeyoshi Watabe, Nobuharu Ohsawa, Stoshi Seo, Harue Osaka, Yuko Kubota
  • Publication number: 20220231248
    Abstract: A display device having a long lifetime is provided. The display device includes a first light-emitting device and a second light-emitting device. The first light-emitting device includes a first electrode and a common electrode. The second light-emitting device includes a second electrode and a common electrode. The first light-emitting device includes a first light-emitting layer and an electron-transport layer in this order from a side of one of the first electrode and the common electrode which functions as an anode. The second light-emitting device includes a second light-emitting layer between the second electrode and the common electrode. The first light-emitting layer contains a first organic compound emitting light of a first color. The second light-emitting layer contains a second organic compound emitting light of a second color. The electron-transport layer contains a third organic compound and a first substance. The third organic compound is an electron-transport material.
    Type: Application
    Filed: April 7, 2020
    Publication date: July 21, 2022
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Satoshi SEO, Harue OSAKA
  • Publication number: 20220194954
    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: January 13, 2022
    Publication date: June 23, 2022
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kyoko Takeda, Harue Osaka, Satoshi Seo, Tsunenori Suzuki, Naoaki Hashimoto, Yusuke Takita
  • Publication number: 20220149308
    Abstract: A light-emitting device with a long lifetime is provided. In a light-emitting device that includes an EL layer between a pair of electrodes, a light-emitting layer included in the EL layer has a functional stacked-layer structure, whereby the efficiency and reliability of the light-emitting device can be increased.
    Type: Application
    Filed: February 12, 2020
    Publication date: May 12, 2022
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Satoshi SEO, Harue OSAKA, Naoaki HASHIMOTO, Shunpei YAMAZAKI
  • Publication number: 20220140250
    Abstract: A novel light-emitting device, a novel light-emitting apparatus, a novel electronic device, a novel display device, and a novel lighting device which are highly convenient, useful, or reliable are provided. The light-emitting device includes a first electrode, a second electrode, a first layer, and a second layer. The second electrode includes a region overlapping with the first electrode, the first layer includes a region sandwiched between the first electrode and the second electrode, the first layer includes a light-emitting material, the light-emitting material has a function of emitting photoluminescent light in a solution, the photoluminescent light has a first spectrum, the first spectrum has a maximum peak at a wavelength ?1, and the wavelength ?1 is in the range greater than or equal to 440 nm and less than or equal to 470 nm.
    Type: Application
    Filed: November 2, 2021
    Publication date: May 5, 2022
    Inventors: Yuta KAWANO, Takeyoshi WATABE, Airi UEDA, Nobuharu OHSAWA, Keito TOSU, Harue OSAKA, Ryo NARUKAWA, Satoshi SEO
  • Publication number: 20220140273
    Abstract: A display device having a long lifetime is provided. A large-sized display device is provided. A display device includes a first light-emitting device and a second light-emitting device. The first light-emitting device includes a hole-injection layer, a first light-emitting layer, and an electron-transport layer. The second light-emitting device includes a second light-emitting layer. The hole-injection layer contains a first compound and a second compound. The first light-emitting layer contains a third compound that emits light of a first color. The second light-emitting layer contains a fourth compound that emits light of a second color. The electron-transport layer contains a fifth compound. The first compound has a property of accepting electrons from the second compound. The second compound has a HOMO level higher than or equal to ?5.7 eV and lower than or equal to ?5.4 eV. The fifth compound has a HOMO level higher than or equal to ?6.
    Type: Application
    Filed: February 14, 2020
    Publication date: May 5, 2022
    Inventors: Shunpei YAMAZAKI, Satoshi SEO, Harue OSAKA
  • Publication number: 20220123054
    Abstract: A display panel is provided. The display panel includes a display region, an insulating film, and a sealing film; the display region includes a pixel; and the pixel includes a display element and a color conversion layer. The insulating film covers the display element, the sealing film includes a region, the color conversion layer is sandwiched between the region and the insulating film, and the sealing film includes a region that is on the outside of the display region and in contact with the insulating film. The display element includes a first layer, a second layer, a third layer, and a fourth layer. The first layer contains a first material and a second material, the second layer contains a third material, the third layer contains a light-emitting material and a fourth material, the fourth layer contains a fifth material and a sixth material, the first material has a HOMO level higher than or equal to ?5.7 eV and lower than or equal to ?5.
    Type: Application
    Filed: February 12, 2020
    Publication date: April 21, 2022
    Inventors: Shunpei YAMAZAKI, Harue OSAKA
  • Publication number: 20220123231
    Abstract: A novel light-emitting device that is highly convenient, useful, or reliable is provided. An organic compound in which a substituted or unsubstituted naphtho[2,3-c]carbazolyl group or a substituted or unsubstituted benzo[c]naphtho[2,3-g]carbazolyl group is bonded to a substituted or unsubstituted 9H-carbazolyl group or a substituted or unsubstituted anthryl group through a substituted or unsubstituted arylene group. The arylene group has 6 to 13, inclusive, carbon atoms.
    Type: Application
    Filed: October 13, 2021
    Publication date: April 21, 2022
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hiroshi KADOMA, Satoshi SEO, Harue OSAKA, Tsunenori SUZUKI
  • Patent number: 11225488
    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: February 28, 2018
    Date of Patent: January 18, 2022
    Inventors: Kyoko Takeda, Harue Osaka, Satoshi Seo, Tsunenori Suzuki, Naoaki Hashimoto, Yusuke Takita
  • Patent number: 11177325
    Abstract: Providing a light-emitting element emitting light in a broad emission spectrum. A combination of a first organic compound and a second organic compound forms an exciplex. The first organic compound has a function of converting triplet-excitation energy into light emission. The lowest triplet excitation level of the second organic compound is higher than or equal to the lowest triplet excitation level of the first organic compound, and the lowest triplet excitation level of the first organic compound is higher than or equal to the lowest triplet excitation level of the exciplex. Light emission from a light-emitting layer includes light emission from the first organic compound and light emission from the exciplex.
    Type: Grant
    Filed: September 24, 2018
    Date of Patent: November 16, 2021
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Takeyoshi Watabe, Satomi Mitsumori, Nobuharu Ohsawa, Harue Osaka, Kunihiko Suzuki, Satoshi Seo
  • Publication number: 20210347782
    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: Application
    Filed: February 28, 2018
    Publication date: November 11, 2021
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kyoko TAKEDA, Harue OSAKA, Satoshi SEO, Tsunenori SUZUKI, Naoaki HASHIMOTO, Yusuke TAKITA
  • Publication number: 20210336176
    Abstract: A light-emitting device with high emission efficiency 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 light-emitting layer and an electron-transport layer; the light-emitting layer includes a light-emitting material; the electron-transport layer includes an organic compound having an electron-transport property and a metal complex of an alkali metal; the ordinary refractive index of the organic compound having an electron-transport property in a peak wavelength of light emitted from the light-emitting material is greater than or equal to 1.50 and less than or equal to 1.75; and the ordinary refractive index of the metal complex of an alkali metal in the peak wavelength of the light emitted from the light-emitting material is greater than or equal to 1.45 and less than or equal to 1.70.
    Type: Application
    Filed: April 22, 2021
    Publication date: October 28, 2021
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Yuta KAWANO, Airi UEDA, Takeyoshi WATABE, Nobuharu OHSAWA, Keito TOSU, Harue OSAKA, Satoshi SEO, Ryo NARUKAWA, Shiho NOMURA
  • Publication number: 20210336151
    Abstract: A light-emitting device material with a low refractive index is provided. The light-emitting device material contains an organic compound which has a pyridine skeleton, a diazine skeleton, or a triazine skeleton and in which the proportion of carbon atoms forming a bond by sp3 hybrid orbitals is within a certain range. The light-emitting device material contains an organic compound including at least one six-membered heteroaromatic ring having 1 to 3 nitrogen atoms and a plurality of aromatic hydrocarbon rings each having 6 to 14 carbon atoms in a ring. At least two of the plurality of aromatic hydrocarbon rings are benzene rings. The organic compound has a plurality of hydrocarbon groups forming a bond by the sp3 hybrid orbitals. The ordinary refractive index of a layer containing the organic compound with respect to light with a wavelength in the range from 455 nm to 465 nm is 1.5 to 1.75.
    Type: Application
    Filed: April 26, 2021
    Publication date: October 28, 2021
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Keito Tosu, Yuta Kawano, Hiroshi Kadoma, Harue Osaka, Ryo Narukawa, Airi Ueda, Takeyoshi Watabe, Nobuharu Ohsawa, Satoshi Seo
  • Publication number: 20210277305
    Abstract: A light-emitting element includes an EL layer between a pair of electrodes. The EL layer contains a first compound and a second compound. The first compound is a phosphorescent iridium metal complex having a LUMO level of greater than or equal to ?3.5 eV and less than or equal to ?2.5 eV, and the second compound is an organic compound having a pyrimidine skeleton. The light-emitting element includes an EL layer between a pair of electrodes. The EL layer contains a first compound and a second compound. The first compound is a phosphorescent iridium metal complex having a diazine skeleton, and the second compound is an organic compound having a pyrimidine skeleton.
    Type: Application
    Filed: May 14, 2021
    Publication date: September 9, 2021
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kyoko Takeda, Harue Osaka, Satoko Shitagaki, Nobuharu Ohsawa, Satoshi Seo, Hiromi Seo
  • Patent number: 11063225
    Abstract: A highly reliable light-emitting element having high emission efficiency is provided. The light-emitting element includes a light-emitting layer including a first organic compound and a guest material. The first organic compound has a substituted or unsubstituted carbazole skeleton. In the light-emitting layer, the weight ratio of a hydrocarbon group substitution product in which at least one of hydrogen atoms in the first organic compound is substituted by a hydrocarbon group having 1 to 6 carbon atoms to the first organic compound is greater than 0 and less than or equal to 0.1.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: July 13, 2021
    Inventors: Takeyoshi Watabe, Satoshi Seo, Nozomi Komatsu, Ryohei Yamaoka, Harue Osaka, Kunihiko Suzuki, Shunsuke Hosoumi
  • Publication number: 20210193930
    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: Application
    Filed: December 9, 2020
    Publication date: June 24, 2021
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Kyoko TAKEDA, Harue OSAKA, Hiroshi KADOMA, Satoshi SEO, Tsunenori SUZUKI, Naoaki HASHIMOTO
  • Publication number: 20210184130
    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: Application
    Filed: December 9, 2020
    Publication date: June 17, 2021
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Kyoko TAKEDA, Harue OSAKA, Hiroshi KADOMA, Satoshi SEO, Tsunenori SUZUKI, Naoaki HASHIMOTO
  • Publication number: 20210175429
    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: February 18, 2021
    Publication date: June 10, 2021
    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