Patents by Inventor Naoki Hase

Naoki Hase 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: 20240101899
    Abstract: To provide a semiconductor light emitting device which is capable of accomplishing a broad color reproducibility for an entire image without losing brightness of the entire image. A light source provided on a backlight for a color image display device has a semiconductor light emitting device comprising a solid light emitting device to emit light in a blue or deep blue region or in an ultraviolet region and phosphors, in combination. The phosphors comprise a green emitting phosphor and a red emitting phosphor. The green emitting phosphor and the red emitting phosphor are ones, of which the rate of change of the emission peak intensity at 100° C. to the emission intensity at 25° C., when the wavelength of the excitation light is 400 nm or 455 nm, is at most 40%.
    Type: Application
    Filed: November 30, 2023
    Publication date: March 28, 2024
    Applicants: CITIZEN ELECTRONICS CO., LTD., NICHIA CORPORATION
    Inventors: Byungchul HONG, Naoki SAKO, Naoto KIJIMA, Masahiko YOSHINO, Takashi HASE, Fumiko YOYASU, Kentarou HORIBE
  • Patent number: 11935677
    Abstract: A magnetic device includes a fixed layer including a fixed pattern, a free layer, and a tunnel barrier between the fixed layer and the free layer. The fixed pattern includes a first magnetic pattern, a second magnetic pattern, and a hybrid spacer, including a nonmagnetic material layer, between the first magnetic pattern and the second magnetic pattern, the nonmagnetic material including a plurality of magnetic nanoparticles dispersed therein.
    Type: Grant
    Filed: June 17, 2021
    Date of Patent: March 19, 2024
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Younghyun Kim, Sechung Oh, Naoki Hase, Heeju Shin, Junghwan Park
  • Publication number: 20230207177
    Abstract: A synthetic antiferromagnet includes a first ferromagnetic layer having a first surface; a second ferromagnetic layer having a second surface facing the first surface of the first ferromagnetic layer; and a first non-magnetic layer disposed between the first ferromagnetic layer and the second ferromagnetic layer, wherein the first ferromagnetic layer has an inclined perpendicular magnetic anisotropy (PMA) in which a magnetization direction of the first ferromagnetic layer is inclined from a first direction perpendicular to the first surface and the second surface, a component in a first direction of the magnetization direction of the first ferromagnetic layer and a component in a first direction of a magnetization direction of the second ferromagnetic layer are opposite to each other.
    Type: Application
    Filed: June 22, 2022
    Publication date: June 29, 2023
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jeongchun RYU, Seungjae LEE, Naoki HASE, Kwangseok KIM
  • Publication number: 20230059590
    Abstract: Provided are a magnetic tunneling junction device having more stable perpendicular magnetic anisotropy (PMA) and/or increased operating speed, and/or a memory device including the magnetic tunneling junction device. The magnetic tunneling junction device includes a free layer having a first surface and a second surface opposite the first surface; a pinned layer facing the first surface of the free layer; a first oxide layer between the pinned layer and the free layer; and a second oxide layer on the second surface of the free layer. The free layer includes a magnetic material X doped with a non-magnetic metal/ The second oxide layer includes ZOx which is an oxide of a metal Z. An oxygen affinity of the metal Z is greater than an oxygen affinity of the non-magnetic metal X.
    Type: Application
    Filed: November 8, 2022
    Publication date: February 23, 2023
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Kwangseok KIM, Seonggeon PARK, Seungjae LEE, Naoki HASE
  • Publication number: 20230020056
    Abstract: Provided are a magnetic tunneling junction device having more stable perpendicular magnetic anisotropy (PMA) and/or increased operating speed, and/or a memory device including the magnetic tunneling junction device. The magnetic tunneling junction device includes a free layer having a first surface and a second surface opposite the first surface; a pinned layer facing the first surface of the free layer; a first oxide layer between the pinned layer and the free layer; and a second oxide layer on the second surface of the free layer. The free layer includes a magnetic material X doped with a non-magnetic metal/ The second oxide layer includes ZOx which is an oxide of a metal Z. An oxygen affinity of the metal Z is greater than an oxygen affinity of the non-magnetic metal X.
    Type: Application
    Filed: March 22, 2022
    Publication date: January 19, 2023
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Kwangseok KIM, Seonggeon PARK, Seungjae LEE, Naoki HASE
  • Publication number: 20230019156
    Abstract: Provided are a magnetic tunneling junction device having a fast operating speed without reducing or with increasing data retention and/or a memory device including the magnetic tunneling junction device. The magnetic tunneling junction device includes a free layer having a first surface and a second surface opposite the first surface; a pinned layer facing the first surface of the free layer; a first oxide layer between the pinned layer and the free layer; and a second oxide layer on the second surface of the free layer. The free layer includes a first free layer adjacent to the first oxide layer and a second free layer adjacent to the second oxide layer. The first free layer includes a magnetic material not doped with a non-magnetic metal, and the second free layer includes a magnetic material doped with the non-magnetic metal.
    Type: Application
    Filed: May 3, 2022
    Publication date: January 19, 2023
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Kwangseok KIM, Seonggeon PARK, Kiwoong KIM, Naoki HASE
  • Patent number: 11551737
    Abstract: A magnetic storage element and an electronic apparatus having a reduced writing current while retaining a magnetism retention property of a storage layer. The magnetic storage element includes a spin orbit layer extending in one direction, a writing line that is electrically coupled to the spin orbit layer, and allows a current to flow in an extending direction of the spin orbit layer, a tunnel junction element including a storage layer, an insulator layer, and a magnetization fixed layer that are stacked in order on the spin orbit layer, and a non-magnetic layer having a film thickness of 2 nm or less, and disposed at any stack position between the spin orbit layer and the insulator layer.
    Type: Grant
    Filed: January 15, 2018
    Date of Patent: January 10, 2023
    Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
    Inventors: Naoki Hase, Masanori Hosomi, Yutaka Higo, Hiroyuki Ohmori, Hiroyuki Uchida, Yo Sato
  • Patent number: 11462681
    Abstract: Provided is a magnetic storage element including a stack structure which includes a fixed layer whose magnetization direction is fixed, a storage layer whose magnetization direction is reversible, and a non-magnetic layer sandwiched between the fixed layer and the storage layer. The magnetization direction has a direction along a stack direction of the stack structure, and the fixed layer or the storage layer has a region which contains at least one contained element selected from the element group consisting of B, C, N, Al, Mg, and Si at 30 atm % or more and 80 atm % or less.
    Type: Grant
    Filed: June 6, 2019
    Date of Patent: October 4, 2022
    Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
    Inventors: Hiroyuki Uchida, Masanori Hosomi, Kazuhiro Bessho, Yutaka Higo, Yo Sato, Naoki Hase, Hiroyuki Ohmori
  • Publication number: 20220285607
    Abstract: Provided are magnetic tunneling junction devices, memory devices including the magnetic tunneling junction devices, and methods of manufacturing the magnetic tunneling junction devices. The magnetic tunneling junction device includes a first magnetic layer; a second magnetic layer disposed to face the first magnetic layer; and a first oxide layer disposed between the first magnetic layer and the second magnetic layer and including a metal oxide, wherein the metal oxide of the first oxide layer has a stoichiometrically oxygen-deficient composition, and wherein the second magnetic layer includes a magnetic material doped with a metal element.
    Type: Application
    Filed: January 26, 2022
    Publication date: September 8, 2022
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Kwangseok KIM, Seonggeon PARK, Naoki HASE, Seungjae LEE
  • Publication number: 20220130581
    Abstract: A magnetic device includes a fixed layer including a fixed pattern, a free layer, and a tunnel barrier between the fixed layer and the free layer. The fixed pattern includes a first magnetic pattern, a second magnetic pattern, and a hybrid spacer, including a nonmagnetic material layer, between the first magnetic pattern and the second magnetic pattern, the nonmagnetic material including a plurality of magnetic nanoparticles dispersed therein.
    Type: Application
    Filed: June 17, 2021
    Publication date: April 28, 2022
    Inventors: Younghyun Kim, Sechung Oh, Naoki Hase, Heeju Shin, Junghwan Park
  • Patent number: 11195989
    Abstract: The present disclosure is to provide a ferromagnetic tunnel junction element and a method of manufacturing the ferromagnetic tunnel junction element capable of avoiding changes in the characteristics of the element and maintaining a high fabrication yield, while avoiding an increase in the area occupied by the element and an increase in the number of manufacturing steps. The ferromagnetic tunnel junction element to be provided includes: a first magnetic layer; a first insulating layer disposed on the first magnetic layer; a second magnetic layer containing a magnetic transition metal, the second magnetic layer being disposed on the first insulating layer; and a magnesium oxide film containing the magnetic transition metal, the magnesium oxide film being disposed to cover the side surfaces of the second magnetic layer.
    Type: Grant
    Filed: December 26, 2017
    Date of Patent: December 7, 2021
    Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
    Inventors: Hiroyuki Ohmori, Masanori Hosomi, Yutaka Higo, Hiroyuki Uchida, Naoki Hase, Yo Sato
  • Publication number: 20210288244
    Abstract: Provided is a magnetic storage element including a stack structure which includes a fixed layer whose magnetization direction is fixed, a storage layer whose magnetization direction is reversible, and a non-magnetic layer sandwiched between the fixed layer and the storage layer. The magnetization direction has a direction along a stack direction of the stack structure, and the fixed layer or the storage layer has a region which contains at least one contained element selected from the element group consisting of B, C, N, Al, Mg, and Si at 30 atm % or more and 80 atm % or less.
    Type: Application
    Filed: June 6, 2019
    Publication date: September 16, 2021
    Applicant: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
    Inventors: Hiroyuki UCHIDA, Masanori HOSOMI, Kazuhiro BESSHO, Yutaka HIGO, Yo SATO, Naoki HASE, Hiroyuki OHMORI
  • Patent number: 11069389
    Abstract: To provide a magnetic memory capable of performing stable recording while suppressing occurrence of an inversion error. Provided is a magnetic memory including a spin orbit layer in which a spin-polarized electron is generated by a current, a magnetic memory element having a laminated structure including a magnetic layer in which a magnetization direction changes according to information to be recorded and an insulating layer, and provided on the spin orbit layer, and a voltage application layer for applying a voltage to the magnetic layer via the insulating layer, in which the voltage application layer applies a voltage to the magnetic layer at a same time as the current flowing in the spin orbit layer to change magnetic anisotropy or a magnetic damping constant of the magnetic layer.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: July 20, 2021
    Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
    Inventors: Hiroyuki Ohmori, Masanori Hosomi, Yutaka Higo, Hiroyuki Uchida, Naoki Hase, Yo Sato
  • Patent number: 11037612
    Abstract: To provide a magnetic memory capable of performing stable recording while suppressing occurrence of an inversion error. Provided is a magnetic memory including a spin orbit layer in which a spin-polarized electron is generated by a current, a magnetic memory element having a laminated structure including a magnetic layer in which a magnetization direction changes according to information to be recorded and an insulating layer, and provided on the spin orbit layer, and a voltage application layer for applying a voltage to the magnetic layer via the insulating layer, in which the voltage application layer applies a voltage to the magnetic layer at a same time as the current flowing in the spin orbit layer to change magnetic anisotropy or a magnetic damping constant of the magnetic layer.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: June 15, 2021
    Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
    Inventors: Hiroyuki Ohmori, Masanori Hosomi, Yutaka Higo, Hiroyuki Uchida, Naoki Hase, Yo Sato
  • Patent number: 10964604
    Abstract: To provide a magnetic storage element, a magnetic storage device, and an electronic device which store multi-value information with a simpler structure.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: March 30, 2021
    Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
    Inventors: Hiroyuki Uchida, Masanori Hosomi, Hiroyuki Ohmori, Kazuhiro Bessho, Yutaka Higo, Yo Sato, Naoki Hase
  • Patent number: 10964366
    Abstract: There is provided a magnetic memory that can suppress the increase in manufacturing costs while recording multivalued information in one memory cell, the memory including first and second tunnel junction elements each having a laminated structure including a reference layer with a fixed magnetization direction, a recording layer with a reversible magnetization direction, and an insulating layer sandwiched between the reference layer and the recording layer, a first selection transistor electrically connected to first ends of the first and second tunnel junction elements, a first wire electrically connected to a second end of the first tunnel junction element, and a second wire electrically connected to a second end of the second tunnel junction element.
    Type: Grant
    Filed: January 5, 2018
    Date of Patent: March 30, 2021
    Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
    Inventors: Hiroyuki Ohmori, Masanori Hosomi, Yutaka Higo, Hiroyuki Uchida, Naoki Hase, Yo Sato
  • Publication number: 20200381033
    Abstract: [Overview] [Problem to be Solved] Provided are a magnetic storage element and an electronic apparatus having a reduced writing current while retaining a magnetism retention property of a storage layer. [Solution] The magnetic storage element includes: a spin orbit layer extending in one direction; a writing line that is electrically coupled to the spin orbit layer, and allows a current to flow in an extending direction of the spin orbit layer; a tunnel junction element including a storage layer, an insulator layer, and a magnetization fixed layer that are stacked in order on the spin orbit layer; and a non-magnetic layer having a film thickness of 2 nm or less, and disposed at any stack position between the spin orbit layer and the insulator layer.
    Type: Application
    Filed: January 15, 2018
    Publication date: December 3, 2020
    Inventors: NAOKI HASE, MASANORI HOSOMI, YUTAKA HIGO, HIROYUKI OHMORI, HIROYUKI UCHIDA, YO SATO
  • Patent number: 10783932
    Abstract: To provide a magnetic memory for storing multi-level information capable of reading while sufficiently securing a read margin. Provided is a magnetic memory including: first and second magnetic storage elements that are provided between a first wiring and a second wiring crossing each other, and are electrically connected in series; a third wiring electrically connected between the first and second magnetic storage elements; a first determination unit that determines a magnetization state of the first magnetic storage element on the basis of a current flowing to the first magnetic storage element through the third wiring; and a second determination unit that determines a magnetization state of the second magnetic storage element on the basis of a current flowing to the first and second magnetic storage elements through the first wiring, in which the determination state of the second determination unit is changed on the basis of the determination result of the first determination unit.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: September 22, 2020
    Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
    Inventors: Yutaka Higo, Masanori Hosomi, Hiroyuki Ohmori, Kazuhiro Bessho, Hiroyuki Uchida, Yo Sato, Naoki Hase
  • Publication number: 20200075842
    Abstract: The present disclosure is to provide a ferromagnetic tunnel junction element and a method of manufacturing the ferromagnetic tunnel junction element capable of avoiding changes in the characteristics of the element and maintaining a high fabrication yield, while avoiding an increase in the area occupied by the element and an increase in the number of manufacturing steps. The ferromagnetic tunnel junction element to be provided includes: a first magnetic layer; a first insulating layer disposed on the first magnetic layer; a second magnetic layer containing a magnetic transition metal, the second magnetic layer being disposed on the first insulating layer; and a magnesium oxide film containing the magnetic transition metal, the magnesium oxide film being disposed to cover the side surfaces of the second magnetic layer.
    Type: Application
    Filed: December 26, 2017
    Publication date: March 5, 2020
    Inventors: HIROYUKI OHMORI, MASANORI HOSOMI, YUTAKA HIGO, HIROYUKI UCHIDA, NAOKI HASE, YO SATO
  • Publication number: 20200058552
    Abstract: To provide a magnetic storage element, a magnetic storage device, and an electronic device which store multi-value information with a simpler structure.
    Type: Application
    Filed: December 8, 2017
    Publication date: February 20, 2020
    Inventors: HIROYUKI UCHIDA, MASANORI HOSOMI, HIROYUKI OHMORI, KAZUHIRO BESSHO, YUTAKA HIGO, YO SATO, NAOKI HASE