Patents by Inventor Kaoru Ito

Kaoru Ito 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: 11656724
    Abstract: According to one embodiment, a display device includes a first substrate, a second substrate opposing the first substrate, a liquid crystal layer, at least one first detection electrode disposed in a display area and a plurality of second detection electrodes disposed in a peripheral area. In a display period in which images are displayed on the display area, a predetermined voltage is applied to the first detection electrode to drive the liquid crystal layer, and in a period in which the liquid crystal layer is not driven, the first detection electrode is set to a state of being not electrically connected to anywhere or being connected to a predetermined potential with an impedance of 50 k? or higher.
    Type: Grant
    Filed: August 19, 2021
    Date of Patent: May 23, 2023
    Assignee: Japan Display Inc.
    Inventors: Akihiko Fujisawa, Kaoru Ito, Daichi Abe
  • Publication number: 20230088935
    Abstract: A liquid crystal display device includes a liquid crystal layer provided between a first substrate and a second substrate, a detection electrode configured to detect an external proximity object, a plurality of pixels overlapping the detection electrode in plan view, and a detection circuit configured to detect a detected capacitance value generated in the detection electrode. A liquid crystal capacitance value generated between each of the pixels and the detection electrode includes a first capacitance value at a first gradation and a second capacitance value at a second gradation smaller than the first gradation, and the detection circuit corrects the detected capacitance value based on a ratio between number of pixels with the first gradation and number of pixels with the second gradation out of the pixels.
    Type: Application
    Filed: November 18, 2022
    Publication date: March 23, 2023
    Inventors: Kaoru ITO, Akihiko FUJISAWA
  • Patent number: 11567615
    Abstract: According to one embodiment, a display device includes a first substrate, a second substrate opposed to the first substrate, detection electrodes provided to surround a display area where an image is displayed, and a common electrode provided over an entire surface of the display area. The common electrode includes a first lead wiring line that extends to a peripheral area around the display area, along a boundary part between a first detection electrode, which is one of the detection electrodes, and a second detection electrode adjacent to the first detection electrode. A capacitance formed between the first lead wiring line and the first detection electrode is substantially equal to a capacitance formed between the first lead wiring line and the second detection electrode.
    Type: Grant
    Filed: January 18, 2022
    Date of Patent: January 31, 2023
    Assignee: Japan Display Inc.
    Inventors: Akihiko Fujisawa, Kaoru Ito, Daichi Abe
  • Publication number: 20230017680
    Abstract: According to one embodiment, a display device includes a display panel and a ring-shaped electrode. The display panel includes a display area for displaying an image, a plurality of first electrodes arranged to surround the display area, and at least one second electrode arranged to surround the plurality of first electrodes. The ring-shaped electrode is arranged on the display panel and is arranged at a position overlapping with the second electrode in planar view. The ring-shaped electrode includes a protruding portion overlapping with at least one of the plurality of first electrodes in planar view.
    Type: Application
    Filed: September 19, 2022
    Publication date: January 19, 2023
    Inventors: Akihiko FUJISAWA, Kaoru ITO, Tsutomu HARADA, Takayuki NAKANISHI
  • Publication number: 20230017345
    Abstract: According to one embodiment, a display device includes a display area, a plurality of sensor electrodes and a shield electrode. The display panel includes a first substrate, a second substrate opposed to the first substrate, a liquid crystal layer sealed between the first substrate and the second substrate, a pixel electrode, and a counter-electrode. The plurality of sensor electrodes are arranged to surround the display area. The shield electrode is arranged between the plurality of sensor electrodes and the pixel electrode or the counter-electrode located closest to a boundary between the display area and a non-display area surrounding the display area, in planar view. A predetermined reference voltage is applied to the shield electrode.
    Type: Application
    Filed: September 19, 2022
    Publication date: January 19, 2023
    Inventors: Akihiko FUJISAWA, Kaoru ITO
  • Publication number: 20220236835
    Abstract: According to one embodiment, a display device includes a first substrate, a second substrate, a sealant, a first electrode, an insulating film and a second electrode. The sealant bonds the first substrate and the second substrate and is provided in a peripheral area surrounding a display area. The first electrode is provided on the first substrate in the peripheral area. The insulating film covers the first electrode. The second electrode is provided on the second substrate in the peripheral area. The sealant contains a conductive member. At least one of the first electrode and the second electrode includes a plurality of fine line portions in an area where the first electrode, the insulating film, the sealant, and the second electrode are overlapped in planar view.
    Type: Application
    Filed: January 20, 2022
    Publication date: July 28, 2022
    Inventors: Kaoru ITO, Akihiko FUJISAWA
  • Publication number: 20220229515
    Abstract: According to one embodiment, a display device includes a first substrate, a second substrate opposed to the first substrate, detection electrodes provided to surround a display area where an image is displayed, and a common electrode provided over an entire surface of the display area. The common electrode includes a first lead wiring line that extends to a peripheral area around the display area, along a boundary part between a first detection electrode, which is one of the detection electrodes, and a second detection electrode adjacent to the first detection electrode. A capacitance formed between the first lead wiring line and the first detection electrode is substantially equal to a capacitance formed between the first lead wiring line and the second detection electrode.
    Type: Application
    Filed: January 18, 2022
    Publication date: July 21, 2022
    Inventors: Akihiko FUJISAWA, Kaoru ITO, Daichi ABE
  • Publication number: 20220171500
    Abstract: A display device is provided and includes display panel; sensor substrate formed on display panel; and M drive electrodes and detection electrodes extended in direction so as to intersect with M drive electrodes, wherein among M drive electrodes, any of lengths of N first drive electrodes, which are continuously adjacent to one another, is shorter than any of lengths of other N second drive electrodes which are continuously adjacent to one another, and number of detection electrodes which intersect with N first drive electrodes is larger than number of detection electrodes which intersect with N second drive electrodes.
    Type: Application
    Filed: February 15, 2022
    Publication date: June 2, 2022
    Inventors: Akihiko FUJISAWA, Teppei YAMADA, Kaoru ITO
  • Publication number: 20220171516
    Abstract: A technology which can improve the accuracy of touch detection is proposed. A display device includes: a touch panel including plural drive electrodes and plural detection electrodes; plural peripheral wirings; and plural switching elements each of which is disposed between a detection electrode and the corresponding peripheral wiring and that is connected to the detection electrode and the corresponding peripheral electrode. The touch panel executes detection by means of a mutual detection scheme using the plural drive electrodes and the plural detection electrodes. In a condition in which a predefined voltage is applied to the peripheral wirings when the plural switching elements are in an off-state, the voltages of the drive electrodes are changed, and subsequently a condition in which the changes of the voltages of the drive electrodes can be detected from the peripheral wirings is set, and the switching elements are turned from off to on.
    Type: Application
    Filed: February 17, 2022
    Publication date: June 2, 2022
    Inventors: Akihiko FUJISAWA, Daichi ABE, Kaoru ITO
  • Publication number: 20220146894
    Abstract: According to one embodiment, a display device includes a plurality of detection electrodes, a first shield electrode and a second shield electrode. The plurality of detection electrodes are disposed in a peripheral area surrounding a display area configured to display an image. The first shield electrode is disposed on a first substrate and in at least the peripheral area, the first shield electrode having a predetermined fixed potential. The second shield electrode is disposed on a second substrate and in at least the peripheral area, the second shield electrode having the predetermined fixed potential. The first shield electrode and the second shield electrode are disposed, in a plan view, on a side of the display area with respect to each of the detection electrodes.
    Type: Application
    Filed: November 8, 2021
    Publication date: May 12, 2022
    Inventors: Kaoru ITO, Akihiko FUJISAWA
  • Publication number: 20220100069
    Abstract: A chromaticity adjusting method of a projector includes a first light source for emitting blue light and a second light source for emitting yellow light including red light and green light. A chromaticity value of the blue light is acquired and the chromaticity value and the luminance value of each of the red light and the green light is obtained. The second target chromaticity value is determined based on the first target chromaticity value, the chromaticity value of the blue light, and the chromaticity value and the luminance value of each of the red light and the green light. Light quantities of the first and second light sources are controlled based on the second target chromaticity value. Signal levels of the red, green, and blue color components included in the video signal are controlled according to the difference between the first target chromaticity value and the second target chromaticity value.
    Type: Application
    Filed: January 30, 2019
    Publication date: March 31, 2022
    Inventor: Kaoru ITO
  • Patent number: 11269469
    Abstract: A technology that can make the touch detection results at corner portions proper is proposed. A display device includes a display panel, a sensor substrate formed on the display panel, and plural drive electrodes and plural detection electrodes extended in a direction so as to intersect with the plural drive electrodes on the sensor substrate. Among the plural drive electrodes, any of the lengths of N first drive electrodes (where N represents the number), which are continuously adjacent to one another, is shorter than any of the lengths of the other drive electrodes. An area where at least one drive electrode among the N first drive electrodes and at least one detection electrode overlap each other is larger than the area of an intersectional portion where any of the other drive electrodes and any of the other detection electrodes overlap each other.
    Type: Grant
    Filed: October 2, 2020
    Date of Patent: March 8, 2022
    Assignee: Japan Display Inc.
    Inventors: Akihiko Fujisawa, Teppei Yamada, Kaoru Ito
  • Patent number: 11262867
    Abstract: A technology which can improve the accuracy of touch detection is proposed. A display device includes: a touch panel including plural drive electrodes and plural detection electrodes; plural peripheral wirings; and plural switching elements each of which is disposed between a detection electrode and the corresponding peripheral wiring and that is connected to the detection electrode and the corresponding peripheral electrode. The touch panel executes detection by means of a mutual detection scheme using the plural drive electrodes and the plural detection electrodes. In a condition in which a predefined voltage is applied to the peripheral wirings when the plural switching elements are in an off-state, the voltages of the drive electrodes are changed, and subsequently a condition in which the changes of the voltages of the drive electrodes can be detected from the peripheral wirings is set, and the switching elements are turned from off to on.
    Type: Grant
    Filed: March 30, 2021
    Date of Patent: March 1, 2022
    Assignee: Japan Display Inc.
    Inventors: Akihiko Fujisawa, Daichi Abe, Kaoru Ito
  • Publication number: 20220057872
    Abstract: According to one embodiment, a display device includes a first substrate, a second substrate opposing the first substrate, a liquid crystal layer, at least one first detection electrode disposed in a display area and a plurality of second detection electrodes disposed in a peripheral area. In a display period in which images are displayed on the display area, a predetermined voltage is applied to the first detection electrode to drive the liquid crystal layer, and in a period in which the liquid crystal layer is not driven, the first detection electrode is set to a state of being not electrically connected to anywhere or being connected to a predetermined potential with an impedance of 50 k? or higher.
    Type: Application
    Filed: August 19, 2021
    Publication date: February 24, 2022
    Inventors: Akihiko FUJISAWA, Kaoru ITO, Daichi ABE
  • Patent number: 11171514
    Abstract: A wireless power transmission system includes a power-supplying device including an electronic oscillator that generates electric power having a frequency of 1 MHz or more and 5 MHz or less, and a power-supplying coil member in which the electric power flows; and a power-receiving device including a power-receiving coil member that is capable of generating electric power based on the magnetic field generating from the power-supplying coil member, wherein the power-receiving coil member is a sheet coil including an insulating layer and a first coil pattern disposed at one side of the insulating layer, the first coil pattern is composed of wires, and the wires are disposed in spaced apart relation from each other with a predetermined space provided therebetween in the radial direction of the first coil pattern.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: November 9, 2021
    Assignee: NITTO DENKO CORPORATION
    Inventors: Taiki Sueyoshi, Masami Inoue, Hisashi Tsuda, Takashi Oda, Kaoru Ito, Hideshi Yamakawa, Daigo Tsubai, Toru Mizutani, Yasuyuki Ota
  • Publication number: 20210303124
    Abstract: A technology which can improve the accuracy of touch detection is proposed. A display device includes: a touch panel including plural drive electrodes and plural detection electrodes; plural peripheral wirings; and plural switching elements each of which is disposed between a detection electrode and the corresponding peripheral wiring and that is connected to the detection electrode and the corresponding peripheral electrode. The touch panel executes detection by means of a mutual detection scheme using the plural drive electrodes and the plural detection electrodes. In a condition in which a predefined voltage is applied to the peripheral wirings when the plural switching elements are in an off-state, the voltages of the drive electrodes are changed, and subsequently a condition in which the changes of the voltages of the drive electrodes can be detected from the peripheral wirings is set, and the switching elements are turned from off to on.
    Type: Application
    Filed: March 30, 2021
    Publication date: September 30, 2021
    Inventors: Akihiko FUJISAWA, Daichi ABE, Kaoru ITO
  • Publication number: 20210152953
    Abstract: A battery pack includes a secondary battery, a coil member, a circuit board, a housing, and a metal member. The metal member has a plurality of strip portions extending along the direction orthogonal to the thickness direction of the housing from the inside of the housing toward the peripheral end edge, and connected to each other inside the housing. The plurality of strip portions each has an end edge positioned at the peripheral end edge of the housing, and each of the end edges of the plurality of strip portions is position defined at different positions at the peripheral end edge of the housing.
    Type: Application
    Filed: July 31, 2018
    Publication date: May 20, 2021
    Applicant: NITTO DENKO CORPORATION
    Inventors: Taiki SUEYOSHI, Masami INOUE, Hisashi TSUDA, Toru MIZUTANI, Kaoru ITO, Daigo TSUBAI, Hideshi YAMAKAWA
  • Patent number: 11005146
    Abstract: A battery includes a case, an internal terminal, an external terminal, and an insulator. The internal terminal includes an internal terminal base and a shaft. The internal terminal base is disposed inside the case, with the insulator interposed between the case and the internal terminal base. The external terminal includes an external terminal base and a boss. The external terminal base is disposed outside the case, with the insulator interposed between the external terminal base and the case. The boss extends from the external terminal base. The boss receives the shaft of the internal terminal therethrough. The boss is pressure-welded to the shaft of the internal terminal.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: May 11, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masaki Koike, Yoshinori Shibata, Kaoru Ito
  • Publication number: 20210135300
    Abstract: A battery pack includes a secondary battery having a battery negative electrode terminal disposed at one side in thickness direction of the secondary battery and a battery positive electrode terminal disposed at the other side in thickness direction of the secondary battery; a coil member; a circuit board electrically connected with the battery negative electrode terminal, the battery positive electrode terminal, and the coil member; and a housing accommodating the secondary battery, the coil member, and the circuit board, wherein the battery negative electrode terminal is exposed to the outside of the housing.
    Type: Application
    Filed: March 28, 2018
    Publication date: May 6, 2021
    Applicant: NITTO DENKO CORPORATION
    Inventors: Taiki SUEYOSHI, Masami INOUE, Hisashi TSUDA, Takashi ODA, Kaoru ITO, Hideshi YAMAKAWA, Daigo TSUBAI, Toru MIZUTANI, Yasuyuki OTA
  • Publication number: 20210103361
    Abstract: A technology that can make the touch detection results at corner portions proper is proposed. A display device includes a display panel, a sensor substrate formed on the display panel, and plural drive electrodes and plural detection electrodes extended in a direction so as to intersect with the plural drive electrodes on the sensor substrate. Among the plural drive electrodes, any of the lengths of N first drive electrodes (where N represents the number), which are continuously adjacent to one another, is shorter than any of the lengths of the other drive electrodes. An area where at least one drive electrode among the N first drive electrodes and at least one detection electrode overlap each other is larger than the area of an intersectional portion where any of the other drive electrodes and any of the other detection electrodes overlap each other.
    Type: Application
    Filed: October 2, 2020
    Publication date: April 8, 2021
    Inventors: Akihiko FUJISAWA, Teppei YAMADA, Kaoru ITO