Patents by Inventor Hideaki Fukuzawa

Hideaki Fukuzawa 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: 20230068608
    Abstract: A retinal projection display system includes at least one visible light source for projecting a visible light image, an infrared light source for projecting infrared light, a scanning mirror having a field of view larger than the visible light image, a reflective surface on which the visible light image is projected and on which the infrared light is reflected at least partially towards an eye of a user, wherein the reflective surface is larger than the visible light image, at least one infrared photodetector for receiving reflected infrared light that reflects off of the eye of the user, and a hardware computation module comprising a processor and a memory, the hardware computation module configured to determine a gaze direction of the user based at least in part on the reflected infrared light.
    Type: Application
    Filed: August 26, 2022
    Publication date: March 2, 2023
    Applicant: InvenSense, Inc.
    Inventors: Ardalan HESHMATI, Hideaki FUKUZAWA
  • Publication number: 20230054450
    Abstract: A retinal projection display system includes a light source for projecting an image, a scanning mirror having a field of view larger than the image, and a reflective surface on which the image is projected, wherein the reflective surface is larger than the image. The scanning mirror projects the image onto a viewable region of the reflective surface such that the image is projected into a retina of a user.
    Type: Application
    Filed: August 18, 2022
    Publication date: February 23, 2023
    Applicant: InvenSense, Inc.
    Inventors: Ardalan HESHMATI, Hideaki FUKUZAWA
  • Publication number: 20220416096
    Abstract: A light detection element includes: a plurality of magnetic elements, wherein each of the magnetic elements includes a first ferromagnetic layer that is irradiated with light and a second ferromagnetic layer and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer, and wherein at least two of the magnetic elements are arranged to be inside a spot of the light applied to the first ferromagnetic layers of the at least two of the magnetic elements.
    Type: Application
    Filed: June 21, 2022
    Publication date: December 29, 2022
    Applicant: TDK CORPORATION
    Inventors: Takekazu YAMANE, Hideaki FUKUZAWA, Tetsuya SHIBATA, Tomohito MIZUNO
  • Publication number: 20220382181
    Abstract: A integrated light source module includes a planar optical waveguides layer having N light incident ports aligned with respect to each other, M light exit ports aligned with respect to each other, and optical waveguides connected to the N light incident ports and the M light exit ports, and N optical semiconductor devices facing each of the N light incident ports arranged so that light emitted from each of the N optical semiconductor devices can be incident on each of the N light incident ports, wherein light emitted from the M light exit ports can be applied to an object to be irradiated.
    Type: Application
    Filed: May 27, 2022
    Publication date: December 1, 2022
    Applicant: TDK CORPORATION
    Inventors: Kuniyasu ITO, Tsuyoshi KOMAKI, Hideaki FUKUZAWA
  • Publication number: 20220317397
    Abstract: This optical device includes at least one magnetic element including a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer, a laser diode, and a waveguide, in which the waveguide includes at least one input waveguide optically connected to the laser diode and an output waveguide connected to the input waveguide, and at least some of light propagating in at least one of the input waveguide and the output waveguide is applied to the magnetic element.
    Type: Application
    Filed: March 14, 2022
    Publication date: October 6, 2022
    Applicant: TDK CORPORATION
    Inventors: Tetsuya SHIBATA, Hideaki FUKUZAWA, Tomohito MIZUNO, Masahiro SHINKAI
  • Publication number: 20220317484
    Abstract: An optical device that includes at least one magnetic element including a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer; a substrate; and a waveguide is provided, wherein the waveguide and the magnetic element are located on or above the substrate, and wherein at least some of light propagating in the waveguide is applied to the magnetic element.
    Type: Application
    Filed: March 15, 2022
    Publication date: October 6, 2022
    Applicant: TDK CORPORATION
    Inventors: Tetsuya SHIBATA, Hideaki FUKUZAWA, Takashi KIKUKAWA, Tomohito MIZUNO
  • Publication number: 20220208820
    Abstract: An optical sensor includes a wavelength filter configured to transmit light in a specific wavelength range and a magnetic element including a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer. The light passing through the wavelength filter is applied to the magnetic element and the light applied to the magnetic element is detected.
    Type: Application
    Filed: December 22, 2021
    Publication date: June 30, 2022
    Applicant: TDK CORPORATION
    Inventors: Hideaki FUKUZAWA, Dai MATSUOKA, Tomohito MIZUNO, Tetsuya SHIBATA
  • Publication number: 20220178741
    Abstract: A receiving device includes a magnetic element having a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer, wherein the first ferromagnetic layer is configured to be irradiated with light containing an optical signal with a change of intensity of the light, and wherein the receiving device is configured to receive the optical signal on a basis of an output voltage from the magnetic element.
    Type: Application
    Filed: October 21, 2021
    Publication date: June 9, 2022
    Applicant: TDK CORPORATION
    Inventors: Hideaki FUKUZAWA, Tomohito MIZUNO, Tetsuya SHIBATA
  • Publication number: 20220131612
    Abstract: A transceiver device includes: a receiving device including a magnetic element having a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer, wherein the receiving device is configured to receive an optical signal; a transmission device including a modulated light output element, wherein the transmission device is configured to transmit an optical signal; and a circuit chip including an integrated circuit electrically connected to the magnetic element and the modulated light output element.
    Type: Application
    Filed: October 21, 2021
    Publication date: April 28, 2022
    Applicant: TDK CORPORATION
    Inventors: Hideaki FUKUZAWA, Tomohito MIZUNO, Tetsuya SHIBATA, Takashi KIKUKAWA
  • Publication number: 20220131020
    Abstract: An electrode structure includes: a metal film with an opening formed in a part of the metal film; and a transparent conductive film disposed in the opening, wherein the transparent conductive film is electronically connected to an element and overlaps with the element as viewed in a plan view in a thickness direction of the transparent conductive film.
    Type: Application
    Filed: October 25, 2021
    Publication date: April 28, 2022
    Applicant: TDK CORPORATION
    Inventors: Tomohito MIZUNO, Takekazu YAMANE, Hideaki FUKUZAWA, Tetsuya SHIBATA
  • Publication number: 20220068537
    Abstract: A photodetection element includes: a first ferromagnetic layer configured to be irradiated with light; a second ferromagnetic layer; and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer, wherein the first ferromagnetic layer includes a first region in contact with the spacer layer and a second region disposed in a position farther from the space layer than the first region, the first region is made of CoFeB alloy, and the second region is a magnetic material containing Fe and Gd as major constituent elements.
    Type: Application
    Filed: October 22, 2021
    Publication date: March 3, 2022
    Applicant: TDK CORPORATION
    Inventors: Tomohito MIZUNO, Hideaki FUKUZAWA, Tetsuya SHIBATA
  • Publication number: 20220060260
    Abstract: A transmission device of the present disclosure is a transmission device that transmits a visible light signal to a receiving device, and includes a laser light source configured to emit visible light, and an optical modulator configured to change intensity of the visible light and generate a visible light signal, in which the optical modulator has an optical waveguide that serves as a transmission path for the visible light, and the optical waveguide is formed of a material containing lithium niobate.
    Type: Application
    Filed: August 23, 2021
    Publication date: February 24, 2022
    Applicant: TDK CORPORATION
    Inventors: Hideaki FUKUZAWA, Takashi KIKUKAWA, Masahiro SHINKAI, Hiroki HARA
  • Publication number: 20210375343
    Abstract: A perpendicularly magnetized magnetic tunnel junction (p-MTJ) is disclosed wherein a free layer (FL) has a first interface with a MgO tunnel barrier, a second interface with a Mo or W Hk enhancing layer, and is comprised of FexCoyBz wherein x is 66-80, y is 5-9, z is 15-28, and (x+y+z)=100 to simultaneously provide a magnetoresistive ratio >100%, resistance x area product <5 ohm/?m2, switching voltage <0.15V (direct current), and sufficient Hk to ensure thermal stability to 400° C. annealing. The FL may further comprise one or more M elements such as O or N to give (FexCoyBz)wM100-w where w is >90 atomic %. Alternatively, the FL is a trilayer with a FeB layer contacting MgO to induce Hk at the first interface, a middle FeCoB layer for enhanced magnetoresistive ratio, and a Fe or FeB layer adjoining the Hk enhancing layer to increase thermal stability.
    Type: Application
    Filed: August 9, 2021
    Publication date: December 2, 2021
    Inventors: Hideaki Fukuzawa, Vignesh Sundar, Yu-Jen Wang, Ru-Ying Tong
  • Patent number: 11177318
    Abstract: Various embodiments may provide a semiconductor package. The semiconductor package may include a substrate including a via hole. The semiconductor package may also include a chip attached to the substrate. The semiconductor package may further include a prefabricated ferromagnetic pin having a first portion held by the via hole, a second portion extending from a first end of the first portion, and a third portion extending from a second end of the first portion opposite the first end. The semiconductor package may also include a first magnetic shield structure attached to or extended from the second portion of the prefabricated ferromagnetic pin. The semiconductor package may further include a second magnetic shield structure attached to or extended from the third portion of the prefabricated ferromagnetic pin, such that at least a portion of the chip is between the first magnetic shield structure and the second magnetic shield structure.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: November 16, 2021
    Assignee: Agency for Science, Technology and Research
    Inventors: Teck Guan Lim, Hideaki Fukuzawa, Hang Liu
  • Patent number: 11087810
    Abstract: A perpendicularly magnetized magnetic tunnel junction (p-MTJ) is disclosed wherein a free layer (FL) has a first interface with a MgO tunnel barrier, a second interface with a Mo or W Hk enhancing layer, and is comprised of FexCoyBz wherein x is 66-80, y is 5-9, z is 15-28, and (x+y+z)=100 to simultaneously provide a magnetoresistive ratio >100%, resistance x area product <5 ohm/?m2, switching voltage <0.15 V (direct current), and sufficient Hk to ensure thermal stability to 400° C. annealing. The FL may further comprise one or more M elements such as O or N to give (FexCoyBz)wM100-w where w is >90 atomic %. Alternatively, the FL is a trilayer with a FeB layer contacting MgO to induce Hk at the first interface, a middle FeCoB layer for enhanced magnetoresistive ratio, and a Fe or FeB layer adjoining the Hk enhancing layer to increase thermal stability.
    Type: Grant
    Filed: April 9, 2020
    Date of Patent: August 10, 2021
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Hideaki Fukuzawa, Vignesh Sundar, Yu-Jen Wang, Ru-Ying Tong
  • Publication number: 20210104659
    Abstract: Various embodiments may provide a memory cell including a magnetic pinned layer with a substantially fixed magnetization direction, a crystalline spacer layer in contact with the magnetic pinned layer, and a magnetic storage layer. The magnetic storage layer may include an amorphous interface sub-layer in contact with the crystalline spacer layer, the amorphous interface sub-layer including a first alloy of iron (Fe) and at least one element. The amorphous storage layer may also include an amorphous enhancement sub-layer in contact with the amorphous interface sub-layer, the amorphous enhancement sub-layer including a second alloy of iron (Fe) and at least one element. The memory cell may additionally include a cap layer in contact with the amorphous enhancement sub-layer. A concentration of the at least one further element comprised in the first alloy and a concentration of the at least one further element comprised in the second alloy may be different.
    Type: Application
    Filed: January 19, 2017
    Publication date: April 8, 2021
    Inventors: Hideaki Fukuzawa, Jun Yu, Michael Han, Xinpeng Wang, Vladimir Bliznetsov
  • Publication number: 20200350363
    Abstract: Various embodiments may provide a semiconductor package. The semiconductor package may include a substrate including a via hole. The semiconductor package may also include a chip attached to the substrate. The semiconductor package may further include a prefabricated ferromagnetic pin having a first portion held by the via hole, a second portion extending from a first end of the first portion, and a third portion extending from a second end of the first portion opposite the first end. The semiconductor package may also include a first magnetic shield structure attached to or extended from the second portion of the prefabricated ferromagnetic pin. The semiconductor package may further include a second magnetic shield structure attached to or extended from the third portion of the prefabricated ferromagnetic pin, such that at least a portion of the chip is between the first magnetic shield structure and the second magnetic shield structure.
    Type: Application
    Filed: January 28, 2019
    Publication date: November 5, 2020
    Inventors: Teck Guan Lim, Hideaki Fukuzawa, Hang Liu
  • Patent number: 10746526
    Abstract: According to one embodiment, a strain sensing element includes a film unit being deformable, a first and a second magnetic unit, and a strain sensor. The first magnetic unit is provided on the film unit and is arranged with the film unit in a first direction. The first magnetic unit includes a first magnetic body layer and a first intermediate magnetic layer. The second magnetic unit is provided on the film unit and is arranged with the first magnetic unit in a second direction crossing the first direction. The second magnetic unit includes a second magnetic body layer and a second intermediate magnetic layer. The strain sensor is provided on the film unit between the first magnetic unit and the second magnetic unit. An electrical characteristic of the strain sensor changes according to a deformation of the film unit.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: August 18, 2020
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Shiori Kaji, Hideaki Fukuzawa, Tomohiko Nagata, Akio Hori, Yoshihiko Fuji
  • Publication number: 20200243125
    Abstract: A perpendicularly magnetized magnetic tunnel junction (p-MTJ) is disclosed wherein a free layer (FL) has a first interface with a MgO tunnel barrier, a second interface with a Mo or W Hk enhancing layer, and is comprised of FexCoyBz wherein x is 66-80, y is 5-9, z is 15-28, and (x+y+z)=100 to simultaneously provide a magnetoresistive ratio >100%, resistance x area product <5 ohm/?m2, switching voltage <0.15 V (direct current), and sufficient Hk to ensure thermal stability to 400° C. annealing. The FL may further comprise one or more M elements such as O or N to give (FexCoyBz)wM100-w where w is >90 atomic %. Alternatively, the FL is a trilayer with a FeB layer contacting MgO to induce Hk at the first interface, a middle FeCoB layer for enhanced magnetoresistive ratio, and a Fe or FeB layer adjoining the Hk enhancing layer to increase thermal stability.
    Type: Application
    Filed: April 9, 2020
    Publication date: July 30, 2020
    Inventors: Hideaki Fukuzawa, Vignesh Sundar, Yu-Jen Wang, Ru-Ying Tong
  • Patent number: 10622047
    Abstract: A perpendicularly magnetized magnetic tunnel junction (p-MTJ) is disclosed wherein a free layer (FL) has a first interface with a MgO tunnel barrier, a second interface with a Mo or W Hk enhancing layer, and is comprised of FexCoyBz wherein x is 66-80, y is 5-9, z is 15-28, and (x+y+z)=100 to simultaneously provide a magnetoresistive ratio >100%, resistance x area product <5 ohm/?m2, switching voltage <0.15V (direct current), and sufficient Hk to ensure thermal stability to 400° C. annealing. The FL may further comprise one or more M elements such as O or N to give (FexCoyBz)wM100-w where w is >90 atomic %. Alternatively, the FL is a trilayer with a FeB layer contacting MgO to induce Hk at the first interface, a middle FeCoB layer for enhanced magnetoresistive ratio, and a Fe or FeB layer adjoining the Hk enhancing layer to increase thermal stability.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: April 14, 2020
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Hideaki Fukuzawa, Vignesh Sundar, Yu-Jen Wang, Ru-Ying Tong