Patents by Inventor Kei Takahashi

Kei 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).

  • Publication number: 20210230135
    Abstract: A compound represented by Formula (1): The compound can be used as insecticides.
    Type: Application
    Filed: March 22, 2021
    Publication date: July 29, 2021
    Inventors: Kei Yoshida, Takeo Wakita, Hiroyuki Katsuta, Akiyoshi Kai, Yutaka Chiba, Kiyoshi Takahashi, Hiroko Kato, Nobuyuki Kawahara, Michikazu Nomura, Hidenori Daido, Junji Maki, Shinichi Banba
  • Patent number: 11075255
    Abstract: A novel display panel that is highly convenient or reliable is provided. The display panel includes a display region, and the display region includes a first group of pixels, a second group of pixels, a third group of pixels, a fourth group of pixels, a first scan line, a second scan line, a first signal line, and a second signal line. The first group of pixels include a first pixel and are arranged in a row direction. The second group of pixels include a second pixel and are arranged in the row direction. The third group of pixels include a first pixel and are arranged in a column direction that intersects the row direction. The fourth group of pixels include a second pixel and are arranged in the column direction. The first signal line is electrically connected to the third group of pixels and the second signal line is electrically connected to the fourth group of pixels.
    Type: Grant
    Filed: December 26, 2017
    Date of Patent: July 27, 2021
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kouhei Toyotaka, Kei Takahashi, Hideaki Shishido, Shunpei Yamazaki
  • Patent number: 11074890
    Abstract: To provide a display device that achieves both smooth input and a high detection sensitivity on a touch sensor unit. The display device includes a display unit and the touch sensor unit. The display device has three operation modes: normal display in which the entire display region is rewritten, partial IDS driving in which part of the display region is rewritten, and IDS driving in which the entire display region is not rewritten. The detection operation by the touch sensor unit is performed at a time different from the time of performing the rewriting operation of the display region, so that a high detection sensitivity is achieved. Furthermore, a period of performing the detection operation in each of the partial IDS driving and the IDS driving is set longer than a period of performing the detection operation in the normal display, which enables smooth input.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: July 27, 2021
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kei Takahashi, Shunpei Yamazaki
  • Patent number: 11074881
    Abstract: A novel and highly convenient or reliable display panel is provided which includes a first driver circuit, a second driver circuit, a first scan line, a second scan line, and a first signal line. The first driver circuit supplies a selection signal. The second driver circuit supplies a predetermined voltage, first data using a voltage greater than or equal to the predetermined voltage, and second data using a voltage less than or equal to the predetermined voltage. The first scan line is selected in a first period. The second scan line adjacent to the first scan line is selected in a third period. The first signal line receives the first data in the first period, the predetermined voltage in a second period, and the second data in the third period. The second period is provided between the first period and the third period.
    Type: Grant
    Filed: June 22, 2018
    Date of Patent: July 27, 2021
    Inventors: Kei Takahashi, Susumu Kawashima
  • Patent number: 11075533
    Abstract: A lithium ion secondary battery includes a positive electrode including a positive electrode active material layer containing lithium iron phosphate, a negative electrode including a negative electrode active material layer containing graphite, and an electrolyte including a lithium salt and a solvent including ethylene carbonate and diethyl carbonate between the positive electrode and the negative electrode. When the battery temperature of the lithium ion secondary battery or the temperature of an environment in which the lithium ion secondary battery is used is T and given temperatures are T1 and T2 (T1<T2), in the case where T<T1, constant current charge is performed until voltage reaches a given value and then constant voltage charge is performed; in the case where T1?T<T2, only constant current charge is performed; and in the case where T2?T, charge is not performed.
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: July 27, 2021
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Minoru Takahashi, Junpei Momo, Hiroyuki Miyake, Kei Takahashi
  • Patent number: 11069718
    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: Grant
    Filed: September 17, 2020
    Date of Patent: July 20, 2021
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kouhei Toyotaka, Kei Takahashi, Hideaki Shishido, Koji Kusunoki
  • Patent number: 11062667
    Abstract: A display device that achieves both high-accuracy sensing by a touch sensor unit and smooth input using the touch sensor unit is provided. The display device includes a display unit and the touch sensor unit. The touch sensor unit performs touch sensing operation at a different timing from display image rewriting by the display unit, whereby the high-accuracy sensing can be achieved. The display unit has a function of rewriting a display image only in a region that needs to be rewritten. In the case where the entire display region is not necessarily rewritten, the time for the sensing operation by the touch sensor unit can be lengthened, whereby the smooth input can be achieved.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: July 13, 2021
    Inventors: Susumu Kawashima, Kouhei Toyotaka, Kei Takahashi
  • Publication number: 20210210512
    Abstract: A display device with high resolution is provided. A display device with high display quality is provided. A display device includes a display portion, a first terminal group, and a second terminal group. The display portion includes pixels, scan lines, and signal lines. The first terminal group and the second terminal group are apart from each other. The first terminal group includes first terminals and the second terminal group includes second terminals. The scan lines are each electrically connected to the pixels arranged in a row direction. The signal lines are each electrically connected to the pixels arranged in a column direction. The signal lines are each electrically connected to the first terminal or the second terminal. The display portion includes a first region where the signal lines electrically connected to the first terminals and the signal lines electrically connected to the second terminals are mixed.
    Type: Application
    Filed: March 1, 2021
    Publication date: July 8, 2021
    Inventors: Kei TAKAHASHI, Shunpei YAMAZAKI
  • Publication number: 20210201763
    Abstract: A display device that inhibits display deterioration is provided. The display device estimates the amount of deterioration of a pixel included in the display device and corrects a first image signal supplied to the pixel. The display device includes a display panel including a plurality of pixels, a frame memory, and an arithmetic portion. The pixels each include a light-emitting element and a transistor supplying a current to the light-emitting element. The arithmetic portion has a function of performing an arithmetic operation in accordance with a regression model. A forecast error parameter and an output parameter are set in the arithmetic portion. The arithmetic portion updates the forecast error parameter from a first observation signal supplied from the frame memory and a second observation signal supplied from the pixel, in accordance with the regression model, and updates an output parameter by the forecast error parameter in accordance with the regression model.
    Type: Application
    Filed: May 27, 2019
    Publication date: July 1, 2021
    Inventors: Koji KUSUNOKI, Kei TAKAHASHI, Toshiyuki ISA
  • Publication number: 20210198466
    Abstract: To provide a resin composition, a pellet, a composite molded article, a method for manufacturing a composite molded article and a tank, all capable of enabling tight joining and integration of the polyacetal resin molded article and the polyethylene resin molded article, and of suppressing formaldehyde emission and occurrence of mold deposit. The resin composition contains a resin ingredient and melamine, the resin ingredient containing a polyacetal resin and a maleic anhydride-modified polyethylene resin, the polyacetal resin and the maleic anhydride-modified polyethylene resin following a mass proportion of (20 to 49):(80 to 51), and molar concentration of the maleic anhydride group capable of reacting with amino group of melamine contained in the resin composition being 5 to 25 ?mol/g.
    Type: Application
    Filed: August 28, 2019
    Publication date: July 1, 2021
    Applicants: MITSUBISHI ENGINEERING-PLASTICS CORPORATION, JAPAN POLYETHYLENE CORPORATION
    Inventors: Kunihiko FUJIMOTO, Kei TAKAHASHI, Ritsuya MATSUMOTO
  • Publication number: 20210193029
    Abstract: The power consumption of a display device is reduced. The power consumption of a driver circuit in a display device is reduced. A pixel included in the display device includes a display element. The pixel is configured to have a function of retaining a first voltage corresponding to a first input pulse signal and a function of driving the display element with a third voltage obtained by addition of a second voltage corresponding to a second input pulse signal to the first voltage.
    Type: Application
    Filed: September 3, 2019
    Publication date: June 24, 2021
    Inventors: Shunpei YAMAZAKI, Kei TAKAHASHI, Susumu KAWASHIMA, Koji KUSUNOKI, Kazunori WATANABE
  • Publication number: 20210193071
    Abstract: A display device that achieves both high-accuracy sensing by a touch sensor unit and smooth input using the touch sensor unit is provided. The display device includes a display unit and the touch sensor unit. The touch sensor unit performs touch sensing operation at a different timing from display image rewriting by the display unit, whereby the high-accuracy sensing can be achieved. The display unit has a function of rewriting a display image only in a region that needs to be rewritten. In the case where the entire display region is not necessarily rewritten, the time for the sensing operation by the touch sensor unit can be lengthened, whereby the smooth input can be achieved.
    Type: Application
    Filed: February 17, 2021
    Publication date: June 24, 2021
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Susumu Kawashima, Kouhei Toyotaka, Kei Takahashi
  • Publication number: 20210191504
    Abstract: There is provided an information processing device to alleviate motion sickness caused when a video is watched, the information processing device including: a control unit configured to control an operation of a sensation presenting unit that presents a mechanical stimulation or an electric stimulation to a head or a neck of a first user on a basis of information regarding a change in a presentation video presented to the first user via a display unit.
    Type: Application
    Filed: January 24, 2017
    Publication date: June 24, 2021
    Applicant: SONY CORPORATION
    Inventor: Kei TAKAHASHI
  • Publication number: 20210195383
    Abstract: There is provided an information processing apparatus, an information processing method, a program, and an information processing system capable of causing a user of a destination apparatus to be aware of arrival of delivered information without the destination apparatus communicating directly with the peripheral apparatus. The information processing apparatus includes: a notification processing unit that generates notification information for causing a user of a destination apparatus to be aware of arrival of delivered information, which is directed to a peripheral apparatus that is estimated to be located within a predetermined range from the destination apparatus of the delivered information on a basis of positional relationship information; and a communication unit that transmits the notification information generated by the notification processing unit.
    Type: Application
    Filed: January 13, 2017
    Publication date: June 24, 2021
    Applicant: Sony Corporation
    Inventors: Ayumi KATO, Ikuo YAMANO, Kei TAKAHASHI, Kosuke YOSHITOMI, Jun KIMURA, Tsubasa TSUKAHARA
  • Publication number: 20210173249
    Abstract: A liquid crystal display device including a pixel containing a first memory circuit, a second memory circuit, and a liquid crystal element is provided. The first memory circuit includes a first capacitor. One electrode of the first capacitor is electrically connected to one electrode of the liquid crystal element. The second memory circuit includes a second capacitor. One electrode of the second capacitor is electrically connected to the one electrode of the liquid crystal element. The first memory circuit has a function of storing a charge corresponding to a first signal. The second memory circuit has a function of storing a charge corresponding to a second signal. A voltage is applied to the liquid crystal element by supplying a third signal to the other electrode of the first capacitor and supplying a fourth signal to the other electrode of the second capacitor, whereby an image is displayed.
    Type: Application
    Filed: December 10, 2018
    Publication date: June 10, 2021
    Inventors: Susumu KAWASHIMA, Koji KUSUNOKI, Kazunori WATANABE, Kei TAKAHASHI, Shunpei YAMAZAKI
  • Publication number: 20210174734
    Abstract: A novel display is provided. A display having a small change in chromaticity of a micro light-emitting diode in proportion to current density is provided. A display capable of reducing power consumption in the driver circuit when displaying a still image is provided. The display includes a plurality of pixels each including a display element and a microcontroller. The microcontroller includes a first transistor, a triangular wave generator circuit, a comparator, a switch, and a constant current circuit. The first transistor has a function of retaining a potential corresponding to data written to the pixel by being switched off. The triangular wave generator circuit has a function of generating a triangular wave signal. The comparator has a function of generating an output signal corresponding to the potential and the triangular wave signal.
    Type: Application
    Filed: December 11, 2018
    Publication date: June 10, 2021
    Inventors: Kei TAKAHASHI, Koji KUSUNOKI, Kazunori WATANABE, Susumu KAWASHIMA, Kouhei TOYOTAKA, Shunpei YAMAZAKI
  • Publication number: 20210174757
    Abstract: A novel display panel that is highly convenient or reliable is provided. A pixel circuit includes a first switch, a node, a capacitor, and a second switch. The first switch includes a first terminal to which a first signal is supplied and a second terminal electrically connected to the node. The capacitor includes a first terminal electrically connected to the node and a second terminal electrically connected to the second switch. The second switch includes a first terminal to which a second signal is supplied and a second terminal electrically connected to the second terminal of the capacitor. In addition, the second switch has a function of changing from a non-conducting state to a conducting state when the first switch is in a non-conducting state and a function of changing from a conducting state to a non-conducting state when the first switch is in a non-conducting state. The display element performs display on the basis of a potential of the node.
    Type: Application
    Filed: December 11, 2018
    Publication date: June 10, 2021
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kouhei TOYOTAKA, Kei TAKAHASHI, Koji KUSUNOKI, Kazunori WATANABE, Susumu KAWASHIMA
  • Patent number: 11029572
    Abstract: To achieve a display device that is suitable for increasing in size and to provide a high-resolution display device. In the display device, three or more adjacent gate lines are supplied with the same selection signal. Three or more pixels that adjoin in the column direction are connected to different source lines. In each of the pixels, a transistor including a semiconductor layer is disposed. An inner source line among three or more source lines is disposed to overlap with a conductive layer that functions as a pixel electrode. Part of the semiconductor layer of the transistor is provided between the outer source line and a source line adjacent to the outer source line.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: June 8, 2021
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Kei Takahashi
  • Publication number: 20210159435
    Abstract: A display device having a high display quality is provided. A display device that can perform desired display without image data conversion is provided. The display device includes a first pixel. The first pixel includes a first light-emitting element, a color conversion layer, and a first memory circuit. The first light-emitting element exhibits blue light. The color conversion layer has a function of converting light emitted by the first light-emitting element into light having a longer wavelength. A first image signal and a first correction signal are supplied to the first pixel. The first memory circuit has a function of retaining the first correction signal and a function of adding the first correction signal to the first image signal. The first pixel has a function of displaying an image using the first image signal and the first correction signal.
    Type: Application
    Filed: May 23, 2019
    Publication date: May 27, 2021
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Shunpei YAMAZAKI, Satoshi SEO, Koji KUSUNOKI, Kei TAKAHASHI
  • Patent number: 11018161
    Abstract: A display device that is suitable for increasing its size is provided.
    Type: Grant
    Filed: January 5, 2018
    Date of Patent: May 25, 2021
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Kei Takahashi, Yoshiyuki Kurokawa