Patents by Inventor Kouhei Takahashi

Kouhei Takahashi 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: 11960185
    Abstract: Display data of pixels is updated at different timings. A scan line is connected to a first pixel and a second pixel, a first wiring is connected to the first pixel, and a second wiring is connected to the second pixel. In a first period, a signal for selecting the first pixel and the second pixel is supplied to the scan line. Setting data for setting a state where the display data of the first pixel is updated is supplied to the first wiring, and setting data for setting a state where the display data of the second pixel is updated is supplied to the second wiring. In a second period, a signal for selecting the first pixel and the second pixel is supplied to the scan line. Setting data for setting a state where the display data of the first pixel is not updated is supplied to the first wiring, and the setting data for setting the state where the display data of the second pixel is updated is supplied to the second wiring.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: April 16, 2024
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Kouhei Toyotaka, Satoshi Yoshimoto, Kazunori Watanabe, Susumu Kawashima, Kei Takahashi
  • Publication number: 20240118344
    Abstract: A secondary battery control system that conducts abnormality detection while predicting other parameters (internal resistance, SOC, and the like) with high accuracy is provided. A difference between an observation value (voltage) at a certain point in time and a voltage that is estimated using a prior-state variable is sensed. A threshold voltage is set in advance, and from the voltage difference that is sensed, a sudden abnormality, specifically a micro-short circuit or the like is detected. Furthermore, it is preferable that detection be performed by using a neural network to learn data on voltage difference in a time series and determine abnormality or normality.
    Type: Application
    Filed: October 6, 2023
    Publication date: April 11, 2024
    Inventors: Kei TAKAHASHI, Kouhei TOYOTAKA
  • Patent number: 11948515
    Abstract: A low-power display device is provided. The display device is provided with a plurality of display portions. A data driver circuit and an addition circuit are provided to have a region overlapping with the display portion. First analog data is output from the data driver circuit in the case where first digital data consisting of a first digital value is input to the data driver circuit, whereas second analog data is output from the data driver circuit in the case where second digital data consisting of a second digital value is input to the data driver circuit. The addition circuit generates analog data corresponding to digital data that has a high-order bit that is the first digital value and a low-order bit that is the second digital value, by adding the second analog data to the first analog data. An output terminal of the data driver circuit is directly connected to an input terminal of the addition circuit without through an amplifier circuit.
    Type: Grant
    Filed: March 15, 2021
    Date of Patent: April 2, 2024
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kouhei Toyotaka, Kiyotaka Kimura, Hidetomo Kobayashi, Kei Takahashi
  • Publication number: 20240105732
    Abstract: A novel display device or the like in which a transistor connected to a scan line has small gate capacitance is provided. A novel display device or the like in which a scan line has low resistance is provided. A novel display device or the like in which pixels can be arranged with high density is provided. A novel display device or the like that can be manufactured without an increase in cost is provided. In a transistor including a first gate electrode and a second gate electrode, the first gate electrode is formed using a metal material with low resistance and the second gate electrode is formed using a metal oxide material that can reduce oxygen vacancies in an oxide semiconductor layer. The first gate electrode is connected to the scan line, and the second gate electrode is connected to a wiring to which a constant potential is supplied.
    Type: Application
    Filed: October 11, 2023
    Publication date: March 28, 2024
    Inventors: Kouhei TOYOTAKA, Kei TAKAHASHI, Hideaki SHISHIDO, Koji KUSUNOKI
  • Patent number: 11940703
    Abstract: A liquid crystal display device with a high aperture ratio is provided. The display device includes a transistor, a first insulating layer, a second insulating layer, a third insulating layer, a first conductive layer, a pixel electrode, a common electrode, and a liquid crystal layer in a pixel. The first insulating layer is positioned over a channel formation region of the transistor. The first conductive layer is positioned over the first insulating layer. The second insulating layer is positioned over the transistor, the first insulating layer, and the first conductive layer. The pixel electrode is positioned over the second insulating layer, the third insulating layer is positioned over the pixel electrode, the common electrode is positioned over the third insulating layer, and the liquid crystal layer is positioned over the common electrode. The common electrode includes a region overlapping with the first conductive layer with the pixel electrode positioned therebetween.
    Type: Grant
    Filed: May 26, 2023
    Date of Patent: March 26, 2024
    Assignee: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Kouhei Toyotaka, Kazunori Watanabe, Susumu Kawashima, Kei Takahashi, Koji Kusunoki, Masataka Nakada, Ami Sato
  • Publication number: 20240069398
    Abstract: A display apparatus includes a data generation circuit, a source driver circuit, and a pixel. The source driver circuit is electrically connected to the pixel through first and second wirings. The pixel includes a display device that is a liquid crystal device, a potential of one electrode of the display device can be a potential of the first wiring, and a potential of the other electrode of the display device can be a potential of the second wiring. The image data generation circuit has a function of generating digital image data including first and second data. One of the first and second wirings is made to have a potential corresponding to first data, and the other of the first and second wirings is made to have a potential corresponding to the second_data. The potential of the first wiring and the potential of the second wiring are interchanged.
    Type: Application
    Filed: November 9, 2023
    Publication date: February 29, 2024
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kei Takahashi, Susumu KAWASHIMA, Koji KUSUNOKI, Kouhei TOYOTAKA, Kazunori WATANABE
  • Publication number: 20240068875
    Abstract: A thermopile sensor according to the present disclosure includes a p-type portion and an n-type portion. The p-type portion has a first phononic crystal in which first holes are arranged in a plan view. The n-type portion has a second phononic crystal in which second holes are arranged in a plan view. The p-type portion and the n-type portion constitute a thermocouple. The boundary scattering frequency of phonons in the first phononic crystal is different from the boundary scattering frequency of phonons in the second phononic crystal. Alternatively, the ratio of the sum of the areas of the first holes to the area of the first phononic crystal in a plan view is different from the ratio of the sum of the areas of the second holes to the area of the second phononic crystal in a plan view.
    Type: Application
    Filed: October 27, 2023
    Publication date: February 29, 2024
    Inventors: KOUHEI TAKAHASHI, MASAKI FUJIKANE, HIROYUKI TANAKA
  • Patent number: 11917916
    Abstract: A thermoelectric conversion element includes a p-type thermoelectric converter, an n-type thermoelectric converter, a first electrode, a second electrode, and a third electrode. One end of the p-type converter is electrically connected to one end of the n-type converter. The other end of the p-type converter is electrically connected to the second electrode, and the other end of the n-type converter is electrically connected to the third electrode. The p-type converter includes a first phononic crystal layer having a first phononic crystal structure including regularly arranged first through holes. The n-type converter includes a second phononic crystal layer having a second phononic crystal structure including regularly arranged second through holes. The through direction of the first through holes is a direction extending between the ends of the p-type converter. The through direction of the second through holes is a direction extending between the ends of the n-type converter.
    Type: Grant
    Filed: June 16, 2021
    Date of Patent: February 27, 2024
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Masaki Fujikane, Naoki Tambo, Kunihiko Nakamura, Kouhei Takahashi, Yasuyuki Naito
  • Publication number: 20240060824
    Abstract: An infrared sensor according to the present disclosure includes a transistor, a cavity layer, and a sensor layer. The cavity layer includes a cavity. The sensor layer includes a phononic crystal in which holes are arranged. In plan view, the infrared sensor includes a first region and a second region. The first region includes a transistor. The second region includes the cavity. The cavity layer includes a flat major surface. The major surface is disposed around the cavity, and extends across both the first region and the second region. The sensor layer is disposed on the major surface.
    Type: Application
    Filed: October 27, 2023
    Publication date: February 22, 2024
    Inventors: KOUHEI TAKAHASHI, MASAKI FUJIKANE, KUNIHIKO NAKAMURA, ATSUSHI HIMENO, NAOKI TAMBO, YUKI NAKATA, HIROYUKI TANAKA
  • Patent number: 11906363
    Abstract: An infrared sensor includes: a base substrate; a bolometer infrared receiver; a first beam; and a second beam. Each of the first and second beams has a connection portion connected to the base substrate and/or a member on the base substrate and a separated portion away from the base substrate, and is physically joined to the infrared receiver at the separated portion. The infrared receiver is supported by the first and second beams to be away from the base substrate. The infrared receiver includes a resistance change portion including a resistance change material the electrical resistance of which changes with temperature. The resistance change portion includes an amorphous semiconductor, and the first and second beams include a crystalline semiconductor made of the same base material as the resistance change material, and is electrically connected to the resistance change portion at the separated portion.
    Type: Grant
    Filed: June 14, 2021
    Date of Patent: February 20, 2024
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Kouhei Takahashi, Naoki Tambo, Kunihiko Nakamura, Masaki Fujikane, Yasuyuki Naito
  • Publication number: 20240049545
    Abstract: OLED display panel is provided which can control the problem of shedding even high definition panels. Metal wiring 5 which conducts with an earth line of a flexible printed substrate 15 provided on substrate 1. A display area 2 comprised from a plurality of OLED elements is provided at the center of the substrate 1 and four low resistance metal films 3 are provided along each of four edges of the display area 2 on a surface of insulation films 8, 10 at the periphery of the display area 2. Among these, one low resistance metal film 3 conducts with the metal wiring 5 via a contact 3a.
    Type: Application
    Filed: October 17, 2023
    Publication date: February 8, 2024
    Inventors: Kouhei TAKAHASHI, Hirotsugu SAKAMOTO, Takeshi OOKAWARA, Toshihiro SATO
  • Publication number: 20240011840
    Abstract: A multilayer body of the present disclosure includes a phononic crystal layer and a metal layer. The phononic crystal layer has a plurality of recesses. The metal layer is disposed on or above the phononic crystal layer. Metal atoms of a kind identical to that of metal atoms contained in the metal layer are present inside the recesses.
    Type: Application
    Filed: September 20, 2023
    Publication date: January 11, 2024
    Inventors: Kosei OHURA, Naoki TAMBO, Kouhei TAKAHASHI, Masaki FUJIKANE, Hiroyuki TANAKA
  • Patent number: 11825716
    Abstract: An OLED display panel is provided which can control the problem of shedding even in high definition panels. Metal wiring 5 which conducts with an earth line of a flexible printed substrate 15 is provided on a substrate 1. A display area 2 comprised from a plurality of OLED elements is provided at the center of the substrate 1 and four low resistance metal films 3 are provided along each of four edges of the display area 2 on a surface of insulation films 8, 10 at the periphery of the display area 2. Among these, one low resistance metal film 3 conducts with the metal wiring 5 via a contact 3a.
    Type: Grant
    Filed: April 4, 2022
    Date of Patent: November 21, 2023
    Assignee: Japan Display Inc.
    Inventors: Kouhei Takahashi, Hirotsugu Sakamoto, Takeshi Ookawara, Toshihiro Sato
  • Patent number: 11799412
    Abstract: A motor including: a stator including plural windings that form coils and are connected together at a neutral point; a switching circuit that generates a rotating magnetic field around the stator by switching of a power supply to the plurality of windings; a rotor that rotates in response to the rotating magnetic field generated around the stator; a resistor for current detection that detects a current in the switching circuit and that is disposed between the switching circuit and a grounding point; and a filter element that reduces a fluctuation in potential at the neutral point, the filter element being disposed between the neutral point and the resistor for current detection and being grounded at the grounding point via the resistor for current detection.
    Type: Grant
    Filed: July 22, 2019
    Date of Patent: October 24, 2023
    Assignee: DENSO CORPORATION
    Inventors: Kouhei Takahashi, Yoshinobu Nagao
  • Publication number: 20230313936
    Abstract: A solid material includes a three-dimensional structure including recesses and a solid portion formed between the recesses, the three-dimensional structure adjusting a thermal conductivity of the solid material by interaction with phonons, wherein a minimum size of the solid portion between the recesses adjacent to each other in plan view of the three-dimensional structure is smaller than or equal to 100 nm, and the solid portion includes a region with a Young's modulus being smaller than or equal to 80% of a Young's modulus of a reference sample that is fabricated by using the same type of material as a material of the solid portion without forming any recesses.
    Type: Application
    Filed: June 5, 2023
    Publication date: October 5, 2023
    Inventors: MASAKI FUJIKANE, KOUHEI TAKAHASHI, NAOKI TAMBO, YASUYUKI NAITO
  • Publication number: 20230309407
    Abstract: An infrared sensor includes a base substrate, an infrared light receiver, and a beam. The beam includes a separated portion separated from the base substrate to be suspended above the base substrate. The beam is connected at the separated portion to the infrared light receiver. The beam includes a p-type portion containing a p-type semiconductor and an n-type portion containing an n-type semiconductor. The p-type portion has a first three-dimensional structure including first recesses and a first solid portion formed between the first recesses. The first solid portion has, between the first recesses adjacent to each other in plan view, a smallest dimension of less than or equal to 100 nanometers in plan view. The n-type portion has a second three-dimensional structure including second recesses and a second solid portion formed between the second recesses.
    Type: Application
    Filed: June 2, 2023
    Publication date: September 28, 2023
    Inventors: MASAKI FUJIKANE, KOUHEI TAKAHASHI, NAOKI TAMBO, YASUYUKI NAITO
  • Publication number: 20220231114
    Abstract: An OLED display panel is provided which can control the problem of shedding even in high definition panels. Metal wiring 5 which conducts with an earth line of a flexible printed substrate 15 is provided on a substrate 1. A display area 2 comprised from a plurality of OLED elements is provided at the center of the substrate 1 and four low resistance metal films 3 are provided along each of four edges of the display area 2 on a surface of insulation films 8, 10 at the periphery of the display area 2. Among these, one low resistance metal film 3 conducts with the metal wiring 5 via a contact 3a.
    Type: Application
    Filed: April 4, 2022
    Publication date: July 21, 2022
    Inventors: Kouhei TAKAHASHI, Hirotsugu SAKAMOTO, Takeshi OOKAWARA, Toshihiro SATO
  • Publication number: 20220216388
    Abstract: A thermoelectric conversion device includes: an insulating layer; and a thermoelectric conversion module disposed on the insulating layer. The thermoelectric conversion module has a first thermoelectric conversion region and a second thermoelectric conversion region. The first(second) thermoelectric conversion region includes one or two or more thermoelectric conversion elements, a first(third) connection electrode, and a second(fourth) connection electrode. The thermoelectric conversion elements of the first(second) thermoelectric conversion region are electrically connected to the first(third) connection electrode and the second(fourth) connection electrode and located on an electric path connecting these connection electrodes. Each of the thermoelectric conversion elements includes a thermoelectric converter.
    Type: Application
    Filed: March 24, 2022
    Publication date: July 7, 2022
    Inventors: MASAKI FUJIKANE, KOUHEI TAKAHASHI, NAOKI TAMBO, KUNIHIKO NAKAMURA, YASUYUKI NAITO
  • Publication number: 20220216387
    Abstract: A thermoelectric conversion device includes: a first thermoelectric conversion module, a first insulating layer, and a second thermoelectric conversion module. The first (second) thermoelectric conversion module includes one or two or more thermoelectric conversion elements, a first (third) connection electrode, and a second (fourth) connection electrode. The thermoelectric conversion elements of the first (second) thermoelectric conversion module are electrically connected to the first (third) connection electrode and the second (fourth) connection electrode and located on an electric path connecting these connection electrodes. Each of the thermoelectric conversion elements includes a thermoelectric converter. The thermoelectric converter of at least one of the thermoelectric conversion elements has a phononic crystal layer having a phononic crystal structure including a plurality of regularly arranged through holes.
    Type: Application
    Filed: March 23, 2022
    Publication date: July 7, 2022
    Inventors: MASAKI FUJIKANE, KOUHEI TAKAHASHI, NAOKI TAMBO, KUNIHIKO NAKAMURA, YASUYUKI NAITO
  • Patent number: 11329123
    Abstract: An OLED display panel is provided which can control the problem of shedding even in high definition panels. Metal wiring 5 which conducts with an earth line of a flexible printed substrate 15 is provided on a substrate 1. A display area 2 comprised from a plurality of OLED elements is provided at the center of the substrate 1 and four low resistance metal films 3 are provided along each of four edges of the display area 2 on a surface of insulation films 8, 10 at the periphery of the display area 2. Among these, one low resistance metal film 3 conducts with the metal wiring 5 via a 3a.
    Type: Grant
    Filed: June 2, 2020
    Date of Patent: May 10, 2022
    Assignee: Japan Display Inc.
    Inventors: Kouhei Takahashi, Hirotsugu Sakamoto, Takeshi Ookawara, Toshihiro Sato