Patents by Inventor Daigo Ito

Daigo Ito 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: 11258095
    Abstract: A solid-state rechargeable battery includes a pair of electrode layers and a solid electrolyte layer interposed between the pair of electrode layers. The pair of electrode layers each includes a phosphate having an olivine crystal structure. The phosphate contains a transition metal and lithium.
    Type: Grant
    Filed: January 13, 2020
    Date of Patent: February 22, 2022
    Assignee: TAIYO YUDEN CO. LTD.
    Inventor: Daigo Ito
  • Patent number: 11217820
    Abstract: An all solid battery includes: a solid electrolyte layer; a first electrode layer that is formed on a first main face of the solid electrolyte layer; a first electric collector layer that is formed on a face of the first electrode layer, the face being opposite to the first main face; a second electrode layer that is formed on a second main face of the solid electrolyte layer; and a second electric collector layer that is formed on a face of the second electrolyte layer, the face being opposite to the second main face, wherein at least one of the first electric collector layer and the second electric collector layer includes Pd and board-shaped graphite carbon, wherein a volume ratio of Pd and the board-shaped graphite carbon in the at least one of the first electric collector layer and the second electric collector layer is 20:80 to 80:20.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: January 4, 2022
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Daigo Ito, Takato Satoh, Sachie Tomizawa, Chie Kawamura
  • Publication number: 20210408531
    Abstract: An all solid battery includes an oxide-based solid electrolyte layer, a positive electrode layer that is provided on a first main face of the oxide-based solid electrolyte layer and includes a positive electrode active material, and a negative electrode layer that is provided on a second main face of the oxide-based solid electrolyte layer and includes a negative electrode active material. At least one of the positive electrode active material of the positive electrode layer and the negative electrode active material of the negative electrode layer includes a first electrode active material and a second electrode active material of which average operation potentials (vs Li/Li+) are different from each other.
    Type: Application
    Filed: May 21, 2021
    Publication date: December 30, 2021
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Daigo ITO, Taiki SUEMATSU
  • Publication number: 20210408582
    Abstract: An all solid battery includes a multilayer chip in which plurality of internal electrodes are alternately exposed to two side faces. A thickness SE of a solid electrolyte layer is 1 ?m or more and 50 ?m or less in an intersection portion in which two internal electrodes next to each other connected to different external electrodes intersect with each other. Thicknesses EL1 and EL2 of the two internal electrodes are 1 ?m or more and 200 ?m or less. In one of two non-intersection portions, a length EM from one of the pair of external electrodes contacting the one of the two non-intersection portions to an internal electrode spaced from the one of the pair of external electrodes in a distance direction is 50 ?m or more and 800 ?m or less. EM/(SE+EL1/4+EL2/4) is 20 or less.
    Type: Application
    Filed: May 14, 2021
    Publication date: December 30, 2021
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Sachie TOMIZAWA, Daigo ITO
  • Patent number: 11201351
    Abstract: An all solid battery includes: a solid electrolyte layer including phosphoric acid salt-based solid electrolyte; a first electrode that is formed on a first main face of the solid electrolyte layer; and a second electrode that is formed on a second main face of the solid electrolyte layer, wherein a D50% grain diameter of crystal grains of the phosphoric acid salt-based solid electrolyte is 0.5 ?m or less, wherein a D90% grain diameter of the crystal grains is 3 ?m or less.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: December 14, 2021
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Chie Kawamura, Sachie Tomizawa, Daigo Ito, Takato Satoh
  • Publication number: 20210376376
    Abstract: Solid electrolyte includes a first solid electrolyte that is a phosphate salt including Li and Ta, and a second solid electrolyte that is NASICON type solid electrolyte. In a cross section of the solid electrolyte, an area ratio of the first solid electrolyte is more than 10% and an area ratio of the second solid electrolyte is more than 10%.
    Type: Application
    Filed: April 7, 2021
    Publication date: December 2, 2021
    Applicant: TAIYO YUDEN CO., LTD.
    Inventor: Daigo ITO
  • Publication number: 20210328263
    Abstract: An all solid battery includes: a solid electrolyte layer; a positive electrode layer provided on a first face of the solid electrolyte layer, a part of the positive electrode layer extending to a first edge portion of the solid electrolyte layer; a first margin layer that is provided on an area of the solid electrolyte layer where the positive electrode is not provided; a negative electrolyte layer provided on a second face of the solid electrolyte layer, a part of the negative electrolyte layer extending to a second edge portion of the solid electrolyte layer; a second margin layer that is provided on an area of the second face of the solid electrolyte layer where the negative electrolyte layer is not provided; wherein a main component of the first margin layer and the second margin layer is solid electrolyte of which ionic conductivity is lower than that of the solid electrolyte layer.
    Type: Application
    Filed: June 1, 2021
    Publication date: October 21, 2021
    Inventors: Daigo ITO, Takato SATOH, Sachie TOMIZAWA, Chie KAWAMURA
  • Patent number: 11127975
    Abstract: An all solid battery includes: a solid electrolyte layer including solid electrolyte; a first electrode layer that is formed on a first main face of the solid electrolyte layer and includes an active material; and a second electrode layer that is formed on a second main face of the solid electrolyte layer and includes an active material, wherein the solid electrolyte layer includes polymer solid electrolyte including lithium salt, in a clearance of a sintered compact of phosphoric acid salt-based solid electrolyte.
    Type: Grant
    Filed: September 16, 2019
    Date of Patent: September 21, 2021
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Takato Satoh, Daigo Ito, Sachie Tomizawa, Chie Kawamura
  • Publication number: 20210280915
    Abstract: An all solid battery includes a multilayer structure in which solid electrolyte layers and internal electrodes are alternately stacked, the plurality of internal electrodes including an electrode active material and a carbon material, the multilayer structure having a rectangular parallelepiped shape, the plurality of internal electrodes being alternately exposed to two different faces of the multilayer structure, a first cover layer provided on an upper face of the multilayer structure in a stacking direction, and a second cover layer provided on a lower face of the multilayer structure in the stacking direction. Each thickness of the plurality of internal electrodes is equal to or more than each thickness of the plurality of solid electrolyte layers. Vickers hardness of the plurality of solid electrolyte layers and Vickers hardness of the first and second cover layers are larger than Vickers hardness of the plurality of internal electrodes.
    Type: Application
    Filed: January 20, 2021
    Publication date: September 9, 2021
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Masashi SEKIGUCHI, Daigo ITO
  • Patent number: 11101386
    Abstract: A semiconductor device having favorable electrical characteristics is provided. The semiconductor device includes an oxide; a first conductor and a second conductor over the oxide; a third conductor over the oxide; a first insulator provided between the oxide and the third conductor and covering a side surface of the third conductor; a second insulator over the third conductor and the first insulator; a third insulator positioned over the first conductor and at a side surface of the second insulator; a fourth insulator positioned over the second conductor and at a side surface of the second insulator; a fourth conductor being in contact with a top surface and a side surface of the third insulator and electrically connected to the first conductor; and a fifth conductor being in contact with a top surface and a side surface of the fourth insulator and electrically connected to the second conductor.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: August 24, 2021
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Daisuke Matsubayashi, Ryota Hodo, Daigo Ito, Hiroaki Honda, Satoru Okamoto
  • Publication number: 20210242207
    Abstract: A semiconductor device that can be miniaturized or highly integrated is provided. A first conductor to a fourth conductor, a first insulator and a second insulator, and a first oxide and a second oxide are included, the first insulator is positioned over the first conductor, the first oxide is positioned over the first insulator, a first opening that reaches the first conductor is provided in the first insulator and the first oxide, the second conductor and the third conductor isolated from each other are positioned over the first oxide, at least part of the third conductor overlaps with the first opening and is in contact with a top surface of the first conductor, the second oxide is positioned over the first oxide so as to at least partly overlap with a region between the second conductor and the third conductor, the second insulator is positioned over the second oxide, and the fourth conductor is positioned over the second insulator.
    Type: Application
    Filed: May 8, 2019
    Publication date: August 5, 2021
    Inventors: Shunpei YAMAZAKI, Daigo ITO, Ryota HODO, Yoshinori ANDO, Tetsuya KAKEHATA
  • Patent number: 11075368
    Abstract: An all solid battery includes: a solid electrolyte layer including an oxide-based electrolyte; a first electrode layer that is formed on a first face of the solid electrolyte layer and includes a ceramic grain; and a second electrode layer that is formed on a second face of the solid electrolyte layer and includes a ceramic grain, wherein at least one of the first electrode layer and the second electrode layer includes a micro particle carbon and a board-shaped carbon.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: July 27, 2021
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Sachie Tomizawa, Daigo Ito
  • Patent number: 11056716
    Abstract: An all solid battery includes: a solid electrolyte layer; a positive electrode layer provided on a first face of the solid electrolyte layer, a part of the positive electrode layer extending to a first edge portion of the solid electrolyte layer; a first margin layer that is provided on an area of the solid electrolyte layer where the positive electrode is not provided; a negative electrolyte layer provided on a second face of the solid electrolyte layer, a part of the negative electrolyte layer extending to a second edge portion of the solid electrolyte layer; a second margin layer that is provided on an area of the second face of the solid electrolyte layer where the negative electrolyte layer is not provided; wherein a main component of the first margin layer and the second margin layer is solid electrolyte of which ionic conductivity is lower than that of the solid electrolyte layer.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: July 6, 2021
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Daigo Ito, Takato Satoh, Sachie Tomizawa, Chie Kawamura
  • Publication number: 20210203005
    Abstract: An all solid battery includes a multilayer chip in which each of a plurality of solid electrolyte layers including solid electrolyte and each of a plurality of internal electrodes including an electrode active material are alternately stacked, the multilayer chip having a rectangular parallelepiped shape, the plurality of internal electrodes being alternately exposed to two side faces of the multilayer chip other than two end faces of a stacking direction of the multilayer chip, and a pair of external electrodes that contacts the two side faces and include solid electrolyte.
    Type: Application
    Filed: December 1, 2020
    Publication date: July 1, 2021
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Daigo ITO, Kotaro MIZUNO
  • Publication number: 20210202985
    Abstract: An all solid battery includes a solid electrolyte layer of which a main component is a Li—Al-M-PO4-based phosphoric acid salt, a first electrode layer that is provided on a first main face of the solid electrolyte layer and includes an active material, and a second electrode layer that is provided on a second main face of the solid electrolyte layer and includes an active material. “M” is at least one of Ge, Ti, and Zr. A region in which a ratio of MO2 with respect to Li—Al-M-PO4 is 5% or more is unevenly distributed from a center in a thickness of the solid electrolyte layer to 0.4 A downward and to 0.4 A upward, when the thickness of the solid electrolyte layer is expressed by “A”.
    Type: Application
    Filed: November 25, 2020
    Publication date: July 1, 2021
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Takato SATO, Daigo ITO, Sachie TOMIZAWA, Chie KAWAMURA, Masashi SEKIGUCHI
  • Publication number: 20210202986
    Abstract: An all solid battery includes a multilayer chip in which each of a plurality of solid electrolyte layers including solid electrolyte and each of a plurality of internal electrodes including an electrode active material are alternately stacked, the multilayer chip having a rectangular parallelepiped shape, the plurality of internal electrodes being alternately exposed to two side faces of the multilayer chip other than two end faces of a stacking direction of the multilayer chip, and a pair of external electrodes that contacts the two side faces. At least one of the pair of external electrodes includes an electrode active material of which a pole is a same as that of an electrode active material of the internal electrode which contacts the one of the pair of external electrodes.
    Type: Application
    Filed: December 2, 2020
    Publication date: July 1, 2021
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Daigo ITO, Kotaro MIZUNO
  • Publication number: 20210159538
    Abstract: An all-solid battery includes a multilayer structure that includes pairs of positive electrode layers and pairs of negative electrode layers, first solid electrolyte layers, second solid electrolyte layers, and third solid electrolyte layers, the pairs of positive electrode layers and the pairs of negative electrode layers being alternately stacked, each of the first solid electrolyte layers being interposed between each of the pairs of positive electrode layers, each of the second solid electrolyte layers being interposed between each of the pairs of negative electrode layers, each of the third solid electrolyte layers being interposed between the positive electrode layer and the negative electrode layer, wherein a thickness of the third solid electrolyte layer is different from at least one of a thickness of the first electrolyte layer and a thickness of the second electrolyte layer.
    Type: Application
    Filed: October 28, 2020
    Publication date: May 27, 2021
    Applicant: TAIYO YUDEN CO., LTD.
    Inventor: Daigo ITO
  • Publication number: 20210135196
    Abstract: An all solid battery includes a solid electrolyte layer, a positive electrode layer that includes a positive electrode active material and a negative electrode active material, and a negative electrode layer that includes a positive electrode active material and a negative electrode active material, wherein a relationship “SCathode>SAnode” is satisfied, when a ratio of the positive electrode active material of the positive electrode layer is a ratio A1, a ratio of the negative electrode active material of the positive electrode layer is a ratio B1, a ratio of the positive electrode active material of the negative electrode layer is a ratio A2, a ratio of the negative electrode active material of the negative electrode layer is a ratio B2, SCathode is A1/(A1+B1), and SAnode is A2/(A2+B2).
    Type: Application
    Filed: September 28, 2020
    Publication date: May 6, 2021
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Takato SATO, Daigo ITO
  • Publication number: 20210083321
    Abstract: An all-solid battery includes: a multilayer structure that includes a plurality of first electrodes and a plurality of second electrodes, and has a first side face and a second side face adjacent to each other, the plurality of first electrodes and the plurality of second electrodes being alternately stacked with solid electrolyte layers interposed between the plurality of first electrodes and the plurality of second electrodes; a first extraction part exposed on the first side face, the first extraction part being a part of the first electrode; a second extraction part exposed on the second side face, the second extraction part being a part of the second electrode; a first external electrode coupled to the first extraction part on the first side face; and a second external electrode coupled to the second extraction part on the second side face.
    Type: Application
    Filed: September 1, 2020
    Publication date: March 18, 2021
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Daigo ITO, Takato SATOH, Sachie TOMIZAWA, Chie KAWAMURA, Masashi SEKIGUCHI
  • Publication number: 20210057781
    Abstract: An all-solid battery includes: a solid electrolyte layer mainly composed of oxide-based solid electrolyte; a first electrode layer formed on a first principal face of the solid electrolyte layer, the first electrode layer containing an active material; a second electrode layer formed on a second principal face of the solid electrolyte layer, the second electrode layer containing another active material, wherein no collector layer that is in contact with the second electrode layer is provided in a direction in which the solid electrolyte layer, the first electrode layer, and the second electrode layer are stacked, and the second electrode layer includes board-shaped carbon.
    Type: Application
    Filed: August 12, 2020
    Publication date: February 25, 2021
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Sachie TOMIZAWA, Daigo ITO, Chie KAWAMURA