Patents by Inventor Yui Yoshiyasu

Yui Yoshiyasu 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: 20250250483
    Abstract: A novel organometallic complex is provided. The organometallic complex is represented by General Formula (G1). In the organometallic complex represented by General Formula (G1), each of R1, R13, and R14 independently represents an alkyl group that has 1 to 6 carbon atoms and includes deuterium, each of R2 to R12 independently represents hydrogen (including deuterium) or an alkyl group that has 1 to 6 carbon atoms and includes deuterium, each of R15 to R21 independently represents hydrogen (including deuterium), and n represents 1 or 2.
    Type: Application
    Filed: January 22, 2025
    Publication date: August 7, 2025
    Inventors: Keito TOSU, Yui YOSHIYASU, Hiromitsu KIDO, Nobuharu OHSAWA, Hideko YOSHIZUMI
  • Publication number: 20250204142
    Abstract: A light-emitting device having high emission efficiency is provided. The light-emitting device includes a light-emitting layer between a pair of electrodes. The light-emitting layer includes a first compound, a material configured to convert triplet excitation energy into light emission, and a material configured to convert singlet excitation energy into light emission. At least one of the first compound and the material configured to convert triplet excitation energy into light emission includes deuterium. Light emission is obtained from the material configured to convert singlet excitation energy into light emission.
    Type: Application
    Filed: December 10, 2024
    Publication date: June 19, 2025
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Yui YOSHIYASU, Hiromitsu KIDO, Nobuharu OHSAWA, Satoshi SEO
  • Publication number: 20250204248
    Abstract: A novel organic compound and a light-emitting device using the organic compound are provided. The organic compound includes a benzofuropyrimidine skeleton or a benzothienopyrimidine skeleton, a first substituent, and a second substituent. The first substituent represents a carbazole skeleton. The second substituent represents any of a carbazole skeleton, a dibenzofuran skeleton, a tetraphenylsilane skeleton, and a triphenylene skeleton. The first substituent is bonded to a pyrimidine ring included in the benzofuropyrimidine skeleton or the benzothienopyrimidine skeleton. The second substituent is bonded to a benzene ring included in the benzofuropyrimidine skeleton or the benzothienopyrimidine skeleton.
    Type: Application
    Filed: December 6, 2024
    Publication date: June 19, 2025
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kyoko TAKEDA, Yui YOSHIYASU, Hiromitsu KIDO, Nobuharu OHSAWA, Ryo YAMAUCHI
  • Publication number: 20250185501
    Abstract: A highly reliable light-emitting device is provided. The light-emitting device includes a first electrode, a second electrode, and a light-emitting layer. The light-emitting layer is positioned between the first electrode and the second electrode. The light-emitting layer includes a first organic compound, a second organic compound, and a substance that can convert triplet excitation energy into light emission. The first organic compound includes a ?-electron deficient heteroaromatic ring. The second organic compound includes a ?-electron rich heteroaromatic ring or an aromatic amine skeleton. The first organic compound and the second organic compound each contain deuterium. A difference between the lowest triplet excitation level of the first organic compound and that of the second organic compound is less than or equal to 0.10 eV.
    Type: Application
    Filed: November 20, 2024
    Publication date: June 5, 2025
    Inventors: Satoshi SEO, Nobuharu OHSAWA, Hiromitsu KIDO, Yui YOSHIYASU, Satoko NUMATA, Eriko AOYAMA, Anna TADA
  • Publication number: 20250185498
    Abstract: A light-emitting device having excellent characteristics is provided. A light-emitting apparatus material contains an organic compound. In the light-emitting apparatus material, the inner product of a vector A connecting two most distant atoms in the lowest excited state of the organic compound and a vector B that is a transition dipole moment relating to light emission from the organic compound is greater than or equal to 2.5. The length of the vector A is represented in nm, and the magnitude of the vector B is represented in debye. The direction of the vector A is set such that an angle formed by the vector A and the vector B is less than or equal to 90°.
    Type: Application
    Filed: November 27, 2024
    Publication date: June 5, 2025
    Inventors: Hideko YOSHIZUMI, Tomoya YAMAGUCHI, Yui YOSHIYASU, Masatoshi TAKABATAKE, Hiroki HISHINUMA, Nobuharu OHSAWA, Hiromitsu KIDO, Satoshi SEO
  • Publication number: 20250176421
    Abstract: To provide an organometallic complex that can be used as a light-emitting material. The organometallic complex is represented by General Formula (G1). In the formula, each of R2 and R8 represents a deuterated alkyl group having 1 to 10 carbon atoms, each of R1, R3 to R7, and R9 to R26 independently represents hydrogen (including deuterium), an alkyl group having 1 to 10 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 18 carbon atoms, at least one of R4 to R6 represents an alkyl group having 1 to 10 carbon atoms, and at least one of R22 to R26 represents an alkyl group having 3 to 10 carbon atoms.
    Type: Application
    Filed: November 13, 2024
    Publication date: May 29, 2025
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Tomoya YAMAGUCHI, Tomohiro KUBOTA, Yui YOSHIYASU, Hideko YOSHIZUMI, Nobuharu OHSAWA, Hiromitsu KIDO, Satoshi SEO
  • Publication number: 20250151601
    Abstract: The heat resistance of an organic semiconductor device including a step of forming an aluminum oxide film over and in contact with an organic semiconductor layer is improved. A heating step is performed after a layer containing an organometallic compound for a mask for an organic semiconductor layer, which is represented by General Formula (G1) below, is provided over the organic semiconductor layer. In General Formula (G1), Ar represents a substituted or unsubstituted aryl group having 6 to 30 carbon atoms or a substituted or unsubstituted heteroaryl group having 1 to 30 carbon atoms, X represents oxygen or sulfur, M represents a metal, n represents an integer greater than or equal to 1 and less than or equal to 5, and n is the same as the valence of the metal M. Note that when n is greater than or equal to 2, a plurality of Ars may be the same or different and Xs may be the same or different.
    Type: Application
    Filed: August 9, 2022
    Publication date: May 8, 2025
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Yui YOSHIYASU, Kyoko TAKEDA, Masatoshi TAKABATAKE, Sachiko KAWAKAMI, Tsunenori SUZUKI, Toshiki SASAKI, Naoaki HASHIMOTO, Tomoya AOYAMA
  • Publication number: 20250101027
    Abstract: An organic compound with an electron-transport property and low water solubility is provided. An organic compound represented by General Formula (G1-1) below is provided. At least any one of R2 to R9 is a group represented by General Formula (R-1) or (R-2); each of the other groups of R2 to R9 independently represents hydrogen, an alkyl group having 1 to 10 carbon atoms, a cycloalkyl group having 3 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, a substituted or unsubstituted cyclic secondary amino group having 2 to 10 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, or a substituted or unsubstituted heteroaryl group having 1 to 30 carbon atoms; ?1 represents a substituted or unsubstituted arylene group having 6 to 30 carbon atoms; n represents 1 or 2; R11 to R26 each independently represent hydrogen (including deuterium) or an alkyl group having 1 to 10 carbon atoms; and p and q each independently represent 0 or 1.
    Type: Application
    Filed: September 16, 2024
    Publication date: March 27, 2025
    Inventors: Yuko KUBOTA, Yui YOSHIYASU, Sachiko KAWAKAMI, Nobuharu OHSAWA, Shinya FUKUZAKI, Toshiki SASAKI
  • Publication number: 20240391939
    Abstract: An increase in the voltage of an organic semiconductor device including a step of forming an aluminum oxide film over and in contact with an organic semiconductor layer is inhibited. A layer containing an organometallic compound for a mask for an organic semiconductor layer, which is represented by General Formula (G1) below, is provided between the organic semiconductor layer and the aluminum oxide film. In General Formula (G1), Ar represents a substituted or unsubstituted aryl group having 6 to 30 carbon atoms or a substituted or unsubstituted heteroaryl group having 1 to 30 carbon atoms, X represents oxygen or sulfur, M represents a metal, n represents an integer greater than or equal to 1 and less than or equal to 5, and n is the same as the valence of the metal M. Note that when n is greater than or equal to 2, a plurality of Ars may be the same or different and Xs may be the same or different.
    Type: Application
    Filed: August 9, 2022
    Publication date: November 28, 2024
    Inventors: Kyoko TAKEDA, Masatoshi TAKABATAKE, Sachiko KAWAKAMI, Yui YOSHIYASU, Tsunenori SUZUKI, Toshiki SASAKI, Naoaki HASHIMOTO, Tomoya AOYAMA
  • Publication number: 20240397818
    Abstract: A novel mixed material for a light-emitting device with improved heat resistance is provided. The mixed material for a light-emitting device includes a first heteroaromatic compound and a second heteroaromatic compound. The first heteroaromatic compound includes a first heteroaromatic ring. The first heteroaromatic ring includes a ring including two or more nitrogen atoms and any one of a benzene ring and a pyridine ring or a ring including a diazine ring or a triazine ring. The second heteroaromatic compound includes a second heteroaromatic ring. The second heteroaromatic ring includes a ring including two or more nitrogen atoms and any one of a benzene ring and a pyridine ring or a ring including a diazine ring or a triazine ring. A structure of the first heteroaromatic ring is different from a structure of the second heteroaromatic ring.
    Type: Application
    Filed: August 2, 2024
    Publication date: November 28, 2024
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Yui YOSHIYASU, Naoaki Hashimoto, Tatsuyoshi Takahashi, Sachiko Kawakami, Satoshi Seo
  • Publication number: 20240341155
    Abstract: A display device with high display quality is provided.
    Type: Application
    Filed: June 29, 2022
    Publication date: October 10, 2024
    Inventors: Shinya SASAGAWA, Ryota HODO, Kentaro SUGAYA, Yoshikazu HIURA, Takahiro FUJIE, Sachiko KAWAKAMI, Yui YOSHIYASU, Tomohiro KUBOTA
  • Publication number: 20240324309
    Abstract: A display apparatus with high display quality is provided. A display apparatus includes a first pixel, a second pixel provided adjacent to the first pixel, a first insulating layer, and a second insulating layer over the first insulating layer. The first pixel includes a first pixel electrode, a first EL layer covering the first pixel electrode, a common electrode over the first EL layer. The second pixel includes a second pixel electrode, a second EL layer covering the second pixel electrode, and the common electrode over the second EL layer. The first insulating layer covers part of a side surface and part of a top surface of the first EL layer and part of a side surface and part of a top surface of the second EL layer. At least part of the second insulating layer is provided to be sandwiched between an end portion of the side surface of the first EL layer and an end portion of the side surface of the second EL layer.
    Type: Application
    Filed: July 11, 2022
    Publication date: September 26, 2024
    Inventors: Yoshinobu ASAMI, Takahiro FUJIE, Ryo TAGASHIRA, Sachiko KAWAKAMI, Yui YOSHIYASU, Tomohiro KUBOTA
  • Publication number: 20240315066
    Abstract: A light-emitting device having high heat resistance in a manufacturing process is provided.
    Type: Application
    Filed: January 28, 2022
    Publication date: September 19, 2024
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Yui YOSHIYASU, Naoaki HASHIMOTO, Tatsuyoshi TAKAHASHI, Sachiko KAWAKAMI, Satoshi SEO
  • Publication number: 20240284792
    Abstract: An organic compound with an electron-injection property and low water solubility is provided. An organic compound represented by General Formula (G1) is provided. In General Formula (G1), Ar is an aromatic skeleton represented by General Formula (Ar-1); L represents an alkylene group or an arylene group; n represents an integer of 0 to 3; m represents an integer of 1 to 4; and each of R1 to R12 independently represents hydrogen or an alkyl group. In General Formula (Ar-1), each of rings A, B, C, and D independently represents a benzene ring, a naphthalene ring, or a phenanthrene ring; any m carbon atoms on the rings A, B, C, and D each include a bond in General Formula (G1); X1 represents C, Si, or Ge; and ai represents a single bond, O, S, C including a substituent, Si including a substituent, or Ge including a substituent.
    Type: Application
    Filed: January 29, 2024
    Publication date: August 22, 2024
    Inventors: Yuko KUBOTA, Takeyoshi WATABE, Hiromi SEO, Nobuharu OHSAWA, Yui YOSHIYASU, Sachiko KAWAKAMI
  • Patent number: 12063856
    Abstract: A novel mixed material for a light-emitting device with improved heat resistance is provided. The mixed material for a light-emitting device includes a first heteroaromatic compound and a second heteroaromatic compound. The first heteroaromatic compound includes a first heteroaromatic ring. The first heteroaromatic ring includes a ring including two or more nitrogen atoms and any one of a benzene ring and a pyridine ring or a ring including a diazine ring or a triazine ring. The second heteroaromatic compound includes a second heteroaromatic ring. The second heteroaromatic ring includes a ring including two or more nitrogen atoms and any one of a benzene ring and a pyridine ring or a ring including a diazine ring or a triazine ring. A structure of the first heteroaromatic ring is different from a structure of the second heteroaromatic ring.
    Type: Grant
    Filed: March 24, 2022
    Date of Patent: August 13, 2024
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Yui Yoshiyasu, Naoaki Hashimoto, Tatsuyoshi Takahashi, Sachiko Kawakami, Satoshi Seo
  • Publication number: 20240237526
    Abstract: An electron-injection organic compound with low solubility in water is provided. An organic compound represented by General Formula (G1) is provided. X represents a group represented by General Formula (X-1) and Y represents a group represented by General Formula (Y-1). Ar represents a heteroaromatic hydrocarbon group having 2 to 30 carbon atoms forming a ring or an aromatic hydrocarbon group having 6 to 30 carbon atoms forming a ring. Each of R1 and R2 independently represents hydrogen or an alkyl group having 1 to 6 carbon atoms, and h represents an integer of 1 to 6. In General Formulae (X-1) and (Y-1), each of R3 to R6 independently represents hydrogen or an alkyl group having 1 to 6 carbon atoms, and m represents an integer of 0 to 4. When m is 0, 1, 3, or 4, n represents an integer of 1 to 5. When m is 2, n represents 1, 2, 4, or 5.
    Type: Application
    Filed: December 14, 2023
    Publication date: July 11, 2024
    Inventors: Masatoshi TAKABATAKE, Sachiko KAWAKAMI, Nobuharu OHSAWA, Yui YOSHIYASU, Takeyoshi WATABE
  • Publication number: 20240215443
    Abstract: A highly efficient and highly reliable light-emitting device is provided. The light-emitting device includes an organic compound layer between a pair of electrodes. The organic compound layer includes a light-emitting layer, the light-emitting layer includes a first organic compound, a second organic compound, and a light-emitting substance, the first organic compound contains deuterium, and in a PL measurement of a mixed layer of the first organic compound and the second organic compound, a spectrum of an exciplex is observed at room temperature, and a spectrum of the exciplex is not observed at a temperature in a temperature range of 4 K to 80 K, inclusive.
    Type: Application
    Filed: November 30, 2023
    Publication date: June 27, 2024
    Inventors: Yui YOSHIYASU, Nobuharu OHSAWA, Hiromitsu KIDO, Masatoshi TAKABATAKE, Satoshi SEO
  • Publication number: 20240190907
    Abstract: A novel organometallic complex and a novel light-emitting device that are highly useful or reliable are provided. The organometallic complex represented by General Formula (G1) is provided. Note that R1, R2, and R4 to R22 each independently represent hydrogen (including deuterium), an alkyl group having 1 to 10 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 18 carbon atoms, at least one of R2 and R4 represents an alkyl group having 1 to 10 carbon atoms, and any one or more of R18 to R22 represent an alkyl group having 3 to 10 carbon atoms or a substituted or unsubstituted aryl group having 6 to 18 carbon atoms.
    Type: Application
    Filed: October 16, 2023
    Publication date: June 13, 2024
    Applicant: Semiconductor Enegry Laboratory Co., Ltd.
    Inventors: Tomoya Yamaguchi, Hideko Yoshizumi, Yui Yoshiyasu, Masatoshi Takabatake, Hiroki Murakami, Nobuharu Ohsawa, Hiromitsu Kido, Satoshi Seo
  • Publication number: 20240174706
    Abstract: A novel organometallic complex that is highly convenient, useful, or reliable, and a light-emitting device are provided. The organometallic complex is represented by General Formula (G2). In General Formula (G2), each of R1 to R6, R8 to R22, and R31 to R34 independently represents hydrogen (including deuterium), an alkyl group having 1 to 10 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 18 carbon atoms, at least one of R31 to R34 represents an alkyl group having 1 to 10 carbon atoms or a substituted or unsubstituted aryl group having 6 to 18 carbon atoms, and n is an integer of 1 to 4.
    Type: Application
    Filed: October 18, 2023
    Publication date: May 30, 2024
    Inventors: Tomoya YAMAGUCHI, Hideko YOSHIZUMI, Yui YOSHIYASU, Masatoshi TAKABATAKE, Hiroki MURAKAMI, Nobuharu OHSAWA, Hiromitsu KIDO, Satoshi SEO
  • Publication number: 20240155863
    Abstract: A light-emitting device having high heat resistance in a manufacturing process is provided.
    Type: Application
    Filed: February 2, 2022
    Publication date: May 9, 2024
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Yui Yoshiyasu, Naoaki Hashimoto, Tatsuyoshi TAKAHASHI, Sachiko KAWAKAMI, Satoshi SEO