Patents by Inventor Takeshi Sakai

Takeshi Sakai 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: 11295947
    Abstract: Conventional ozone water is still insufficient in the removal rate and cleaning ability of resist required in today's semiconductor manufacturing field, and it does not fully meet the expectation of further improvement in the effects of sterilization, deodorization, and cleaning in the fields such as cleaning of foodstuffs, cleaning of process equipment and tools, and cleaning of fingers, as well as in the fields such as deodorization, sterilization, and preservation of freshness of foodstuffs. The above problem can be solved by defining the values of a plurality of specific production parameters in the production of ozone water into specific ranges.
    Type: Grant
    Filed: April 26, 2019
    Date of Patent: April 5, 2022
    Assignees: TOHOKU UNIVERSITY, NOMURA MICRO SCIENCE CO., LTD.
    Inventors: Yasuyuki Shirai, Takeshi Sakai, Takayuki Jizaimaru
  • Publication number: 20220004039
    Abstract: A display device comprising a transistor and a display element over the transistor, wherein the transistor includes a gate electrode on an insulating surface, a gate insulating layer on the gate electrode, and source/drain electrodes on the oxide semiconductor layer and the gate insulating layer, each including a first conductive layer containing nitrogen and a second conductive layer on the first conductive layer, and an insulating layer contains oxygen on the oxide semiconductor layer and the source/drain electrodes.
    Type: Application
    Filed: September 15, 2021
    Publication date: January 6, 2022
    Applicant: Japan Display Inc.
    Inventors: Masashi TSUBUKU, Takeshi SAKAI, Tatsuya TODA
  • Publication number: 20210366945
    Abstract: A semiconductor device includes a first circuit element, the first circuit element including: a first semiconductor layer having a concave part; a first insulating layer arranged above the first semiconductor layer, the first insulating layer having a first through hole in a region overlapping with the concave part. A method of manufacturing a semiconductor device, the method including: forming a first semiconductor layer having a concave part on a substrate; forming a first insulating layer on the first semiconductor layer; forming a first through hole in a region of the first insulating layer overlapping with the concave part; and forming a first conductive layer arranged in the concave part and the first through hole.
    Type: Application
    Filed: August 9, 2021
    Publication date: November 25, 2021
    Applicant: Japan Display Inc.
    Inventor: Takeshi SAKAI
  • Publication number: 20210367082
    Abstract: The purpose of the invention is to form the TFT of the oxide semiconductor, in which influence of variation in mask alignment is suppressed, thus, manufacturing a display device having a TFT of stable characteristics. The concrete measure is as follows. A display device including plural pixels, each of the plural pixels having a thin film transistor (TFT) of an oxide semiconductor comprising: a width of the oxide semiconductor in the channel width direction is wider than a width of the gate electrode in the channel width direction.
    Type: Application
    Filed: August 4, 2021
    Publication date: November 25, 2021
    Applicant: Japan Display Inc.
    Inventors: Takeshi SAKAI, Yuichiro HANYU, Masahiro WATABE
  • Publication number: 20210302766
    Abstract: An optical modulator includes a substrate on which an optical waveguide and a modulation electrode that modulates a light wave propagating through the optical waveguide are formed, and a case housing the substrate, the optical waveguide includes at least an optical branching part that branches one light wave into two light waves or an optical combining part that combines two light waves into one light wave, the modulation electrode has a signal electrode and a ground electrode, and a part of the signal electrode is disposed so as to cross the optical branching part or the optical combining part, and the optical modulator is provided with a suppressing unit that suppresses changes in an intensity ratio of the light waves branched at the optical branching part or an intensity ratio of the light waves combined at the optical combining part, by the signal electrode.
    Type: Application
    Filed: February 8, 2021
    Publication date: September 30, 2021
    Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Takeshi SAKAI, Toshio KATAOKA
  • Publication number: 20210294040
    Abstract: An optical functional device includes a package case accommodating an optical functional element, an input optical fiber, and an output optical fiber. The optical functional device includes a first reflecting surface that reflects input light output from the input optical fiber to an optical path of output light, a second reflecting surface that reflects the input light to the optical functional element, and a third reflecting surface that reflects the output light in a direction in which the output light becomes further away from an optical axis of the input optical fiber. An optical axis of a leaked light beam transmitted through the second reflecting surface after being reflected by the first reflecting surface or an extension line of the optical axis in an optical propagation medium does not include a portion that is aligned with an optical axis of the output light reflected by the third reflecting surface.
    Type: Application
    Filed: February 12, 2021
    Publication date: September 23, 2021
    Inventors: Takeshi Sakai, Norikazu Miyazaki
  • Publication number: 20210280653
    Abstract: The semiconductor device includes a first gate electrode, a first gate insulating film, a semiconductor film, a first electrode, a second electrode, a second gate insulating film, and a second gate electrode. The first gate insulating film is located over the first gate electrode. The semiconductor film is located over the first gate insulating film and overlaps with the first gate electrode. The first electrode and the second electrode are each located over and in contact with the semiconductor film. The second gate insulating film is located over the first electrode and the second electrode. The second gate electrode is located over the second gate insulating film and overlaps with the second electrode and the first gate electrode. The first electrode is completely exposed from the second gate electrode.
    Type: Application
    Filed: March 4, 2021
    Publication date: September 9, 2021
    Applicant: Japan Display Inc.
    Inventor: Takeshi SAKAI
  • Publication number: 20210280614
    Abstract: The semiconductor device comprises a gate electrode, a first gate insulating film overlapping a part of the side surface and the upper surface of the gate electrode, a second gate insulating film overlapping the upper surface of the gate electrode, a semiconductor film provided on the upper surface of the second gate insulating film and overlapping the gate electrode and a first terminal and a second terminal overlapping the upper surface of the semiconductor film. In a plan view, a first region is a region where the semiconductor film overlaps the upper surface of the first gate insulating film and the second gate insulating film between the first terminal and the second terminal, and a third region is a region that overlaps both a part of the upper surface of the gate electrode and the second gate insulating film and does not overlap the first gate insulating film.
    Type: Application
    Filed: March 4, 2021
    Publication date: September 9, 2021
    Applicant: Japan Display Inc.
    Inventor: Takeshi SAKAI
  • Patent number: 11114568
    Abstract: The purpose of the invention is to form the TFT of the oxide semiconductor, in which influence of variation in mask alignment is suppressed, thus, manufacturing a display device having a TFT of stable characteristics. The concrete measure is as follows. A display device including plural pixels, each of the plural pixels having a thin film transistor (TFT) of an oxide semiconductor comprising: a width of the oxide semiconductor in the channel width direction is wider than a width of the gate electrode in the channel width direction.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: September 7, 2021
    Assignee: Japan Display Inc.
    Inventors: Takeshi Sakai, Yuichiro Hanyu, Masahiro Watabe
  • Publication number: 20210151576
    Abstract: A thin film transistor comprising an active layer made of an oxide semiconductor containing indium and gallium, an electrode layer including a titanium layer formed on the active layer, wherein an indium concentration is equal to or less than 1.3 times an oxygen concentration in a range of 15 nm from an interface between the active layer and the electrode layer toward the active layer.
    Type: Application
    Filed: January 29, 2021
    Publication date: May 20, 2021
    Inventors: Takeshi SAKAI, Tatsuya TODA, Masashi TSUBUKU
  • Publication number: 20210043440
    Abstract: Provided are: a method of producing heated ozone water, the method capable of producing heated ozone water having an extremely high ozone concentration by suppressing a reduction in the ozone concentration in high-concentration heated ozone water; heated ozone water; and a semiconductor wafer-cleaning liquid using the heated ozone water. A method of producing heated ozone water obtained by dissolving ozone in pure water, the method being characterized by including: adjusting a pH of the pure water to 3 or less by adding acid to the pure water; to obtain an acid water, dissolving an ozone gas in the acid water; and heating the pure water, the acid water or the ozone water, to 60° C. or more.
    Type: Application
    Filed: October 23, 2020
    Publication date: February 11, 2021
    Applicants: TOHOKU UNIVERSITY, NOMURA MICRO SCIENCE CO., LTD.
    Inventors: Yasuyuki SHIRAI, Takeshi SAKAI, Takayuki JIZAIMARU
  • Publication number: 20200227569
    Abstract: The purpose of the invention is to form the TFT of the oxide semiconductor, in which influence of variation in mask alignment is suppressed, thus, manufacturing a display device having a TFT of stable characteristics. The concrete measure is as follows. A display device including plural pixels, each of the plural pixels having a thin film transistor (TFT) of an oxide semiconductor comprising: a width of the oxide semiconductor in the channel width direction is wider than a width of the gate electrode in the channel width direction.
    Type: Application
    Filed: March 27, 2020
    Publication date: July 16, 2020
    Applicant: Japan Display Inc.
    Inventors: Takeshi SAKAI, Yuichiro HANYU, Masahiro WATABE
  • Patent number: 10663942
    Abstract: A position control apparatus includes an inversion detector which detects an inversion of a position command and generates an inversion detection signal, a deflection characteristic storage unit which stores a deflection characteristic representing an amount of deflection with respect to a torque command, and an inversion correction calculator which calculates an inversion correction amount. The inversion correction calculator stores a torque command immediately before the inversion, and calculates the inversion correction amount from a difference between an amount of deflection immediately before inversion in which the stored torque command is checked with the deflection characteristic, and an amount of deflection after the inversion in which a value obtained by inverting a sign of the stored torque command is checked with the deflection characteristic. A value obtained by adding the inversion correction amount to the position command value is used for position error calculation.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: May 26, 2020
    Assignee: OKUMA CORPORATION
    Inventors: Hisashi Kondou, Tomohiro Shibata, Yuji Uchida, Takeshi Sakai
  • Patent number: 10629750
    Abstract: The purpose of the invention is to form the TFT of the oxide semiconductor, in which influence of variation in mask alignment is suppressed, thus, manufacturing a display device having a TFT of stable characteristics. The concrete measure is as follows. A display device including plural pixels, each of the plural pixels having a thin film transistor (TFT) of an oxide semiconductor comprising: a width of the oxide semiconductor in the channel width direction is wider than a width of the gate electrode in the channel width direction.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: April 21, 2020
    Assignee: Japan Display Inc.
    Inventors: Takeshi Sakai, Yuichiro Hanyu, Masahiro Watabe
  • Patent number: 10498457
    Abstract: It is possible to suppress carrier light with a simple configuration when modulating the carrier light to generate optical sideband components. An optical carrier-suppressed signal generator includes first splitting means used to split input carrier light into two light beams, an optical modulator which modulates one split carrier light beam and outputs light including optical sideband components, a phase modulator which phase-modulates another split carrier light beam, and second or third splitting means used to split the output light of the optical modulator into two light beams. The output light split by the second or third splitting means and the output light of the phase modulator are multiplexed to obtain the amplitude of the signal waveform of optical power, and the optical modulator is controlled such that the obtained value is minimized.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: December 3, 2019
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Takeshi Sakai, Masahito Mure, Junichiro Ichikawa
  • Publication number: 20190294181
    Abstract: The vehicle management system has a plurality of vehicles capable of moving autonomously, a management device, and a display. The management device has a first communication circuit for communicating with each vehicle and a processing circuit for determining a traveling path for each vehicle and transmitting an instruction indicating the traveling path to each vehicle via the first communication circuit. Each vehicle has a second communication circuit, an obstacle sensor, and a controller for causing the vehicle to move according to the instruction received via the second communication circuit. When the obstacle sensor has detected an obstacle on the path, the controller notifies the presence of the obstacle to the outside via the second communication circuit. Upon receiving the notification indicating the presence of the obstacle from any one the plurality of vehicles, the processing circuit of the management device instructs the display to indicate the presence of the obstacle.
    Type: Application
    Filed: March 21, 2019
    Publication date: September 26, 2019
    Applicant: NIDEC-SHIMPO CORPORATION
    Inventors: Ryoji Ohno, Takeshi Sakai
  • Publication number: 20190278281
    Abstract: This disclosure provides a vehicle, a method for controlling vehicle and a non-transitory computer readable medium stored with a computer program for controlling vehicle. The vehicle performs travel along a predetermined route in a plurality of cycles. The vehicle includes an electrical storage device; a driving device; a communication circuit for performing wireless communications; and a control circuit for monitoring a remaining energy of the electrical storage device and controlling the driving device and the communication circuit. When starting travel along the route, the control circuit causes the driving device to start the travel if the remaining energy of the electrical storage device exceeds a threshold value or causes the communication circuit to transmit an alert if the remaining energy does not exceed the threshold value. The threshold value is set on the basis of the amount of energy consumed by at least one cycle of travel in the past.
    Type: Application
    Filed: February 25, 2019
    Publication date: September 12, 2019
    Applicant: NIDEC-SHIMPO CORPORATION
    Inventor: Takeshi Sakai
  • Patent number: 10367979
    Abstract: An image processing apparatus includes an image acquiring unit and a controller. The image acquiring unit acquires a captured image capturing a subject illuminated by light from at least one light source. The controller generates adjustment information for adjusting an intensity of the light from the at least one light source on the basis of a size of a pupil of the subject determined from the captured image.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: July 30, 2019
    Assignee: KYOCERA Corporation
    Inventors: Takeshi Sakai, Woojung Kim
  • Patent number: 10338414
    Abstract: Provided is an optical modulator module including a waveguide substrate in which an optical waveguide and control electrodes (signal electrode, DC bias electrodes, and the like) for controlling a light wave propagating through the optical waveguide are formed, a relay substrate which is disposed in the vicinity of the waveguide substrate and in which a DC bias wiring for supplying a DC bias voltage to the control electrodes (DC bias electrodes) is formed, and a package case which stores the waveguide substrate and the relay substrate. A loop of wire standing from the relay substrate to a position higher than a top surface of the waveguide substrate is provided in a part of the DC bias wiring. The loop of wire is disposed inside the package case at a position within 10 mm from any one of locations where a solder is used.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: July 2, 2019
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Takeshi Sakai, Junichiro Ichikawa
  • Publication number: 20190060325
    Abstract: The present invention provides a solid dosage form suppressing the increase of by-products due to dimerization of a drug compound having an amino group and a cyano group. The solid dosage form of the invention is prepared by a process which comprises a process wherein a granulation liquid comprising a carboxylic acid ester is added to granulation powders comprising a compound having an amino group and a cyano group.
    Type: Application
    Filed: April 7, 2017
    Publication date: February 28, 2019
    Inventors: Go KIMURA, Akira KAWAI, Takeshi SAKAI