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: 20250120299
    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: October 16, 2024
    Publication date: April 10, 2025
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Tsunenori SUZUKI, Naoaki HASHIMOTO, Eriko SAIJO, Satoshi SEO
  • Publication number: 20250084302
    Abstract: An organic compound is represented by General Formula (G1). In the formula, each of R1 to R4 independently represents any of hydrogen (including deuterium), a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 6 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 carbon atoms, and a substituent represented by General Formula (G1-1). Each of R5 to R8 independently represents any of hydrogen (including deuterium), a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 6 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 carbon atoms, and a substituent represented by General Formula (G1-3). At least one of R5 to R8 represents a substituent represented by General Formula (G1-3).
    Type: Application
    Filed: August 26, 2024
    Publication date: March 13, 2025
    Inventors: Miyako MORIKUBO, Yuki HAYASHI, Tsunenori SUZUKI, Takashi SHINGU, Sachiko KAWAKAMI, Harue OSAKA, Satoshi SEO
  • Publication number: 20250089560
    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: Application
    Filed: September 26, 2024
    Publication date: March 13, 2025
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Satoshi SEO, Tsunenori Suzuki, Naoaki Hashimoto
  • Patent number: 12219862
    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: March 1, 2024
    Date of Patent: February 4, 2025
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Taisuke Kamada, Ryo Hatsumi, Daisuke Kubota, Naoaki Hashimoto, Tsunenori Suzuki, Harue Osaka, Satoshi Seo
  • Patent number: 12219873
    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: January 23, 2024
    Date of Patent: February 4, 2025
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Satoshi Seo, Tsunenori Suzuki, Naoaki Hashimoto
  • Publication number: 20250040430
    Abstract: A novel light-emitting device, a light-emitting device with high emission efficiency, a light-emitting device with a long lifetime, or a light-emitting device with low driving voltage is provided. An EL layer includes a first layer, a second layer, a third layer, a light-emitting layer, and a fourth layer in this order from the anode side. The first layer contains a first organic compound and a second organic compound. The fourth layer contains a seventh organic compound. The first organic compound exhibits an electron-accepting property with respect to the second organic compound. A HOMO level of the second organic compound is higher than or equal to ?5.7 eV and lower than or equal to ?5.4 eV. The fourth layer includes a region where the amount of seventh organic compound is large and a region where the amount of seventh organic compound is small in the thickness direction.
    Type: Application
    Filed: September 17, 2024
    Publication date: January 30, 2025
    Inventors: Naoaki HASHIMOTO, Satoshi SEO, Tsunenori SUZUKI, Yusuke TAKITA, Takumu OKUYAMA, Nobuharu OHSAWA, Shunpei YAMAZAKI, Toshiki SASAKI
  • Publication number: 20250040429
    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. A novel organic compound is provided. A novel organic compound having a hole-transport property is provided. A novel hole-transport material is provided. A hole-transport material including an organic compound having a substituted or unsubstituted benzonaphthofuran skeleton and a substituted or unsubstituted amine skeleton is provided. A light-emitting element using the hole-transport material is provided. An organic compound in which an amine skeleton including two aromatic hydrocarbon groups having 6 to 60 carbon atoms is bonded to the 6- or 8-position of the benzonaphthofuran skeleton is provided.
    Type: Application
    Filed: July 31, 2024
    Publication date: January 30, 2025
    Inventors: Sachiko KAWAKAMI, Tsunenori SUZUKI, Yusuke TAKITA, Satoshi SEO
  • Publication number: 20250011260
    Abstract: A novel compound for a host material is provided. A compound for a host material that is capable of increasing the lifetime of a light-emitting device is provided. A light-emitting device with a long lifetime is provided. A material whose thermophysical properties such as a glass transition temperature are high is provided. An anthracene compound for a host material represented by General Formula (G1) below is provided. (Note that in General Formula (G1), R1 to R7 each independently represent hydrogen or an aryl group having 1 to 25 carbon atoms.
    Type: Application
    Filed: July 2, 2024
    Publication date: January 9, 2025
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hiroki SUZUKI, Satoshi SEO, Hiroshi KADOMA, Tsunenori SUZUKI, Naoaki HASHIMOTO
  • Publication number: 20250017109
    Abstract: A fluorescent light-emitting device using a host material that is less likely to form an oxygen adduct and having a high emission efficiency is provided. In addition, a highly reliable electronic device or light-emitting device is provided. A light-emitting device including at least a light-emitting layer between an anode and a cathode is provided. The light-emitting layer includes a first organic compound that is a light-emitting substance emitting fluorescent light and a second organic compound having a fluoranthene skeleton.
    Type: Application
    Filed: November 16, 2022
    Publication date: January 9, 2025
    Inventors: Akira NAGASAKA, Yuji IWAKI, Sachiko KAWAKAMI, Tsunenori SUZUKI, Tatsuyoshi TAKAHASHI, Takuya HARUYAMA, Satoshi SEO
  • Publication number: 20250008835
    Abstract: A novel organic compound is provided. A novel organic compound having a hole-transport property is provided. A novel hole-transport material is provided. A novel light-emitting element is provided. A light-emitting element with a favorable lifetime is provided. A light-emitting element with favorable emission efficiency is provided. An organic compound having a substituted or unsubstituted benzonaphthofuran skeleton, a substituted or unsubstituted carbazole skeleton, and a substituted or unsubstituted amine skeleton is provided. Alternatively, a light-emitting element that uses the hole-transport material is provided.
    Type: Application
    Filed: September 5, 2024
    Publication date: January 2, 2025
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Sachiko KAWAKAMI, Rina SHIMAZAKI, Takumu OKUYAMA, Tsunenori SUZUKI, Satoshi SEO
  • Publication number: 20240431130
    Abstract: A light-emitting element that includes a fluorescent material and has a high emission efficiency is provided. A light-emitting element in which a delayed fluorescence component due to TTA accounts for a high proportion of emissive components is provided. A novel light-emitting device with a high emission efficiency and a low power consumption is provided. A light-emitting element includes an anode, a cathode, and an EL layer. The EL layer includes a light-emitting layer including a host material and an electron-transport layer including a first material in contact with the light-emitting layer. The LUMO level of the first material is lower than that of the host material. The proportion of a delayed fluorescence component due to TTA is greater than or equal to 10 percent of the light emission from the EL layer. The proportion of the delayed fluorescence component due to TTA may be greater than or equal to 15 percent of the light emission.
    Type: Application
    Filed: August 5, 2024
    Publication date: December 26, 2024
    Inventors: Naoaki HASHIMOTO, Tsunenori SUZUKI, Satoshi SEO, Hiromi SEO, Hiromitsu KIDO
  • Publication number: 20240423005
    Abstract: A novel light-emitting device is provided. Alternatively, a light-emitting device with high emission efficiency is provided. Alternatively, a light-emitting device having a long lifetime is provided. Alternatively, a light-emitting device having low driving voltage is provided. A light-emitting device including an EL layer including a first layer, a second layer, a third layer, a light-emitting layer, and a fourth layer in this order from the anode side is provided. The first layer includes a first organic compound and a second organic compound. The fourth layer includes a seventh organic compound. The first organic compound exhibits an electron-accepting property with respect to the second organic compound. The HOMO level of the second organic compound is from ?5.7 eV to ?5.4 eV. The HOMO level of the seventh organic compound is ?6.0 eV or higher.
    Type: Application
    Filed: August 26, 2024
    Publication date: December 19, 2024
    Inventors: Satoshi SEO, Tsunenori SUZUKI, Takumu OKUYAMA, Yusuke TAKITA, Naoaki HASHIMOTO, Hiromi SEO, Nobuharu OHSAWA, Toshiki SASAKI, Shunpei YAMAZAKI
  • 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: 20240389377
    Abstract: A novel light-emitting device that is highly convenient, useful, or reliable is provided. The light-emitting device includes a first electrode, a second electrode, a first unit, and a first layer, and the first unit is held between the first electrode and the second electrode and includes a second layer, a third layer, and a fourth layer. The second layer is held between the third layer and the fourth layer, and the second layer contains a light-emitting material. The fourth layer is held between the second layer and the second electrode and contains a first organic compound. The first organic compound has a ?-electron deficient heteroaromatic ring skeleton and a ?-electron rich heteroaromatic ring skeleton and has a HOMO level higher than or equal to ?6.0 eV and lower than or equal to ?5.6 eV. The first layer is held between the first electrode and the first unit, is in contact with the first electrode, and contains a second organic compound and a third organic compound.
    Type: Application
    Filed: April 28, 2022
    Publication date: November 21, 2024
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Naoaki HASHIMOTO, Satoshi SEO, Tsunenori SUZUKI, Hiromi SEO
  • Publication number: 20240373746
    Abstract: A triarylamine derivative represented by a general formula (G1) given below is provided. Note that in the formula, Ar represents either a substituted or unsubstituted phenyl group or a substituted or unsubstituted biphenyl group; ? represents a substituted or unsubstituted naphthyl group; ? represents either hydrogen or a substituted or unsubstituted naphthyl group; n and m each independently represent 1 or 2; and R1 to R8 each independently represent any of hydrogen, an alkyl group having 1 to 6 carbon atoms, or a phenyl group.
    Type: Application
    Filed: May 2, 2024
    Publication date: November 7, 2024
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Harue OSAKA, Takahiro USHIKUBO, Nobuharu OHSAWA, Satoshi SEO, Tsunenori SUZUKI
  • Publication number: 20240357846
    Abstract: A novel light-emitting device is provided. Alternatively, a light-emitting device with favorable emission efficiency is provided. Alternatively, a light-emitting device with a favorable lifetime is provided. Alternatively, a light-emitting device with a low driving voltage is provided. Provided is a light-emitting device including an anode, a cathode, and a layer including an organic compound that is positioned between the anode and the cathode, in which the layer including the organic compound includes a first layer, a second layer, and a light-emitting layer in this order from the anode side, the first layer includes a first substance and a second substance, the second layer includes a third substance, the first substance is an organic compound a HOMO level of which is higher than or equal to ?5.8 eV and lower than or equal to ?5.
    Type: Application
    Filed: June 28, 2024
    Publication date: October 24, 2024
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Satoshi Seo, Tsunenori Suzuki, Yusuke Takita, Takumu Okuyama, Anna Tada
  • Patent number: 12127471
    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: Grant
    Filed: June 29, 2023
    Date of Patent: October 22, 2024
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Tsunenori Suzuki, Naoaki Hashimoto, Eriko Saijo, Satoshi Seo
  • Publication number: 20240324307
    Abstract: A high-resolution light-emitting apparatus that emits blue light with a high blue index is provided. The light-emitting apparatus includes a pixel electrode A; a pixel electrode B adjacent to the pixel electrode A; a common electrode; an EL layer A sandwiched between the pixel electrode A and the common electrode; an EL layer B sandwiched between the pixel electrode B and the common electrode; and an insulating layer positioned between the common electrode and each of the EL layer A and the EL layer B. The insulating layer has an opening portion A overlapping with the pixel electrode A and an opening portion B overlapping with the pixel electrode B. The EL layer A includes a light-emitting layer A. The light-emitting layer A contains a light-emitting substance A. The light-emitting substance A emits blue light. The EL layer A is in contact with the pixel electrode A. The EL layer B is in contact with the pixel electrode B. The EL layer A is in contact with the common electrode in the opening portion A.
    Type: Application
    Filed: July 8, 2022
    Publication date: September 26, 2024
    Inventors: Nobuharu OHSAWA, Toshiki SASAKI, Tsunenori SUZUKI, Naoaki HASHIMOTO
  • Patent number: 12101997
    Abstract: A novel light-emitting device, a light-emitting device with high emission efficiency, a light-emitting device with a long lifetime, or a light-emitting device with low driving voltage is provided. An EL layer includes a first layer, a second layer, a third layer, a light-emitting layer, and a fourth layer in this order from the anode side. The first layer contains a first organic compound and a second organic compound. The fourth layer contains a seventh organic compound. The first organic compound exhibits an electron-accepting property with respect to the second organic compound. A HOMO level of the second organic compound is higher than or equal to ?5.7 eV and lower than or equal to ?5.4 eV. The fourth layer includes a region where the amount of seventh organic compound is large and a region where the amount of seventh organic compound is small in the thickness direction.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: September 24, 2024
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Naoaki Hashimoto, Satoshi Seo, Tsunenori Suzuki, Yusuke Takita, Takumu Okuyama, Nobuharu Ohsawa, Shunpei Yamazaki, Toshiki Sasaki
  • Publication number: 20240306493
    Abstract: An object of one embodiment of the present invention is to provide a novel organic compound. The organic compound is a triarylamine derivative. The triarylamine derivative has an aryl group including a skeleton in which a naphthyl group is bonded to a naphthylene group. The other two aryl groups are each independently a phenyl group, a biphenyl group, or a terphenyl group. These groups may each have a substituent. As the substituent, an alkyl group having 1 to 6 carbon atoms or a cycloalkyl group having 3 to 6 carbon atoms can be selected.
    Type: Application
    Filed: May 13, 2024
    Publication date: September 12, 2024
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Sachiko KAWAKAMI, Anna TADA, Yusuke TAKITA, Tsunenori SUZUKI, Naoaki HASHIMOTO, Satoshi SEO