Patents by Inventor Hayato Kurasawa
Hayato Kurasawa 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).
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Patent number: 11269462Abstract: According to one embodiment, an electrostatic capacitance-type sensor-equipped display device includes a display panel with a display surface which displays an image. The sensor includes a plurality of detection electrodes disposed in a matrix, the detection electrodes being mutually electrically independently provided above the display surface and being configured to detect a variation in electrostatic capacitance, and a plurality of lead lines provided above the display surface, connected to the detection electrodes in a one-to-one correspondence, and formed of a metal.Type: GrantFiled: November 27, 2018Date of Patent: March 8, 2022Assignee: Japan Display Inc.Inventors: Koji Noguchi, Koji Ishizaki, Hayato Kurasawa
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Publication number: 20220050573Abstract: A detection apparatus is provided and includes touch detection surface serving as detection region having two dimensions; first electrodes arranged in first and second directions in the two dimensions; and connection lines connected to first electrodes in one-to-one manner and connected to signal output unit, base electrode opposed to first electrodes with predetermined gap there between, electrode driver configured to provide drive signal and force signal to first electrodes, wherein signal output unit is configured to output first signal indicating position where touch operation has been performed when drive signal is provided to first electrodes, first signal being represented by self-capacitances of first electrodes, and to output second signal indicating force that is applied to detection region when force signal is provided to first electrodes and that brings first electrodes close to base electrode, second signal is signal based on electrostatic capacitances obtained by individual detection, and indiviType: ApplicationFiled: October 29, 2021Publication date: February 17, 2022Inventors: Hayato KURASAWA, Yasuyuki TERANISHI
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Patent number: 11249352Abstract: According to one embodiment, a display device comprises image signal lines, scanning signal lines, pixels, a display area, pixel electrodes, and common electrodes. The common electrodes are configured to detect an object and to display an image in the display area. The common electrodes include first and second common electrodes which are arranged in a first direction. A first slit is provided between the first and second common electrodes. The first and second common electrodes are supplied a signal different from each other. A second slit is provided in the first common electrode. Each of the first slit and the second slit overlaps one of the image signal lines and extends in an extension direction in which the image signal line extends.Type: GrantFiled: September 24, 2020Date of Patent: February 15, 2022Assignee: JAPAN DISPLAY INC.Inventors: Kenta Seki, Gen Koide, Hayato Kurasawa
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Patent number: 11243628Abstract: According to one embodiment, a sensor-equipped display device includes first electrodes and a detection electrode. The first electrodes constitute sensor drive electrodes by being supplied with sensor drive signals separately and sequentially or sensor drive electrodes by simultaneously supplying the sensor drive signals to the first electrodes adjacent to each other. A width of the sensor drive electrode including the first electrode on the edge is smaller than a width of the other sensor drive electrode not including the first electrode on the edge.Type: GrantFiled: September 10, 2020Date of Patent: February 8, 2022Assignee: Japan Display Inc.Inventors: Hayato Kurasawa, Yasuyuki Teranishi, Hiroshi Mizuhashi, Koji Ishizaki, Daisuke Ito
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Patent number: 11226680Abstract: In a display apparatus provided with an electrophoresis layer, such a display apparatus capable of operating a driving electrode for use in displaying an image as an electrode for use in detecting an input position is provided. A display apparatus includes: a substrate; another substrate that is disposed so as to face the substrate; an electrophoresis layer sandwiched between the substrate and another substrate; a plurality of pixel electrodes formed on the substrate; and a plurality of driving electrodes formed on another substrate. An electric field is formed between each of the plurality of pixel electrodes and each of the plurality of driving electrodes, so that an image is displayed, and an input position is detected based on an electrostatic capacitance of each of the plurality of driving electrodes.Type: GrantFiled: July 1, 2020Date of Patent: January 18, 2022Assignee: Japan Display Inc.Inventors: Hayato Kurasawa, Yoshiharu Nakajima
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Publication number: 20210397805Abstract: A detection device is provided and includes substrate; drive electrode provided on substrate; detection electrode provided on substrate and capacitively coupling with drive electrode; first thin film transistor connected to drive electrode and second thin film transistor connected to first thin film transistor, first insulating film and second insulating film both stacked on substrate, wherein first thin film transistor comprises first gate electrode and first semiconductor layer, second thin film transistor comprises second gate electrode and second semiconductor layer, first semiconductor layer and second semiconductor layer are in same layer and are located between first insulating film and second insulating film, first gate electrode opposes first semiconductor layer via first insulating film, second gate electrode opposes second semiconductor layer via second insulating film, and distance from first gate electrode to first semiconductor layer is greater than distance from second gate electrode to secondType: ApplicationFiled: September 1, 2021Publication date: December 23, 2021Inventors: Yoshitaka OZEKI, Hayato KURASAWA, Toshinori UEHARA, Koshiro MORIGUCHI
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Publication number: 20210389632Abstract: A liquid crystal includes first and second substrates, the first substrate including intersecting data lines and scan lines. A liquid crystal layer is sandwiched therebetween. Also, a plurality of sub-pixels districted by data lines and gate lines, and arranged along the long-axis and the short-axis directions in a matrix. A pixel electrode in the sub-pixels includes a central portion. A common electrode including linear electrodes arranged along the data lines and disposed with gaps therebetween. Sub-pixels are bent at the center portion, such that the linear electrodes or the gaps in both sides of the sub-pixels are inclined in opposite directions with respect to the long-axis direction. At least one of the linear electrodes or at least one of the gaps has a bent portion at the central portion of the respective pixel electrode. The common electrode is provided on liquid crystal layer side over the pixel electrode.Type: ApplicationFiled: August 27, 2021Publication date: December 16, 2021Inventors: Takao Atarashiya, Hayato Kurasawa
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Publication number: 20210382574Abstract: A sensor-equipped display device is provided and includes a display panel and a detection electrode. The panel includes a display area in which pixels are arranged with a first pixel pitch in a first direction and a second pixel pitch in a second direction. The electrode includes an pattern having line fragments. The pattern has connection points at which ends of the fragments are connected to each other, and at least part of the connection points is arranged linearly such that an arrangement gaps thereof in the first and second direction is set to a first and second connection point pitch.Type: ApplicationFiled: August 24, 2021Publication date: December 9, 2021Inventors: Hayato KURASAWA, Koji ISHIZAKI
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Patent number: 11188172Abstract: According to an aspect, a detection apparatus includes: a plurality of detection electrodes; a drive signal generation circuit configured to generate a drive signal; a detection circuit configured to be coupled to the detection electrodes to detect a detection signal based on the drive signal; and a first selection circuit. A first point in time when the drive signal makes a transition from a first potential to a second potential overlaps a first period in which the first selection circuit couples a detection electrode as a first selection target among the detection electrodes to the detection circuit. A second point in time when the drive signal makes a transition from the second potential to the first potential overlaps a second period in which the first selection circuit couples a detection electrode as a second selection target, which is not included in the first selection target, to the detection circuit.Type: GrantFiled: December 20, 2019Date of Patent: November 30, 2021Assignee: Japan Display Inc.Inventors: Hayato Kurasawa, Toshinori Uehara
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Patent number: 11169636Abstract: A detection apparatus is provided including a touch detection surface serving as a detection region having two dimensions; and first electrode components including divided electrodes arranged in the touch detection surface, first connection lines connected to one of the divided electrodes on a one-to-one basis, and a detection unit configured to output a detection signal to the divided electrodes via the first connection lines, wherein the first connection lines has a first switch between a corresponding one of the divided electrodes and the detection unit, in each of the first electrode components, the first connection lines are connected to each other between the first switches and the detection unit, and in each of the first electrode components, the divided electrodes function as one first electrode when all the first switches are closed.Type: GrantFiled: February 21, 2020Date of Patent: November 9, 2021Assignee: Japan Display Inc.Inventors: Hayato Kurasawa, Yasuyuki Teranishi
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Publication number: 20210318772Abstract: A display device comprises a first power supply line supplying a first potential, a second power supply line supplying a second potential, a third power supply line supplying a touch driving signal, and a display unit including a plurality of sub-pixels. The display unit comprises a plurality of first electrodes respectively provided in the plurality of sub-pixels and electrically connected to the first power supply line, a second electrode provided to be common among the plurality of sub-pixels and electrically connected to the second power supply line, a light emitting layer provided between the first electrode and the second electrode, a plurality of third electrodes electrically connected to the third power supply line, and a signal control circuit supplying a signal synchronized with a touch driving signal to the second electrode in a period in which a touch driving signal is supplied to the plurality of third electrodes.Type: ApplicationFiled: June 23, 2021Publication date: October 14, 2021Inventors: Hiroshi MIZUHASHI, Hayato Kurasawa, Yoshitoshi Kida, Toshinori Uehara, Takayuki Nakanishi
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Patent number: 11132079Abstract: A sensor-equipped display device is provided and includes a display panel and a detection electrode. The panel includes a display area in which pixels are arranged with a first pixel pitch in a first direction and a second pixel pitch in a second direction. The electrode includes an pattern having line fragments. The pattern has connection points at which ends of the fragments are connected to each other, and at least part of the connection points is arranged linearly such that an arrangement gaps thereof in the first and second direction is set to a first and second connection point pitch.Type: GrantFiled: April 6, 2020Date of Patent: September 28, 2021Assignee: Japan Display Inc.Inventors: Hayato Kurasawa, Koji Ishizaki
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Publication number: 20210294477Abstract: A detection apparatus includes a substrate, a display area, a peripheral area, a plurality of electrodes, a plurality of terminals, a first wire, and a second wire. The display area is provided on the surface of the substrate. The peripheral area is provided outside the display area. The electrodes are provided to the display area. The terminals are provided in correspondence with the respective electrodes in the peripheral area. The first wire couples an electrode to a terminal. The second wire couples the electrode to the terminal to which the first wire is coupled.Type: ApplicationFiled: June 9, 2021Publication date: September 23, 2021Inventors: Koji NOGUCHI, Koji ISHIZAKI, Hayato KURASAWA
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Patent number: 11126287Abstract: A display device includes a substrate, first electrodes, pixel electrodes, a display functional layer, common electrodes, second electrodes stacked in this order. The display device further includes lines that are provided between the substrate and the display functional layer and intersect with the first electrodes in the plan view. In response to a control signal from a controller, the pixel electrodes are supplied with a pixel signal through the lines, and the common electrodes are supplied with a common signal in the display periods; either of the lines and the first electrodes are supplied with a first drive signal to generate a magnetic field, and the other thereof generate an electromotive force caused by the magnetic field in the first sensing period; the common electrodes are supplied with a second drive signal to generate electrostatic capacitance between the common electrodes and the second electrodes in the second sensing period.Type: GrantFiled: May 23, 2018Date of Patent: September 21, 2021Assignee: Japan Display Inc.Inventors: Hayato Kurasawa, Hiroshi Mizuhashi, Tadayoshi Katsuta
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Patent number: 11126041Abstract: A liquid crystal includes first and second substrates, the first substrate including intersecting data lines and scan lines. A liquid crystal layer is sandwiched therebetween. Also, a plurality of sub-pixels districted by data lines and gate lines, and arranged along the long-axis and the short-axis directions in a matrix. A pixel electrode in the sub-pixels includes a central portion. A common electrode including linear electrodes arranged along the data lines and disposed with gaps therebetween. Sub-pixels are bent at the center portion, such that the linear electrodes or the gaps in both sides of the sub-pixels are inclined in opposite directions with respect to the long-axis direction. At least one of the linear electrodes or at least one of the gaps has a bent portion at the central portion of the respective pixel electrode. The common electrode is provided on liquid crystal layer side over the pixel electrode.Type: GrantFiled: July 11, 2019Date of Patent: September 21, 2021Assignee: Japan Display Inc.Inventors: Takao Atarashiya, Hayato Kurasawa
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Publication number: 20210278950Abstract: Included are a first cover base including an alkali glass layer, a first alkali-free glass layer provided on one face of the alkali glass layer, and a second alkali-free glass layer provided on another face of the alkali glass layer and a sensor that is provided on the first alkali-free glass layer of the first cover base and includes a plurality of first electrodes configured to detect the unevenness of a surface of an object to be detected that comes into contact with or close to the first cover base and a switching element. At least the first electrodes are formed above the first alkali-free glass layer and in a transmissive area that passes an image.Type: ApplicationFiled: May 11, 2021Publication date: September 9, 2021Inventors: Hayato Kurasawa, Shoji Hinata, Toshinori Uehara, Hiroshi Mizuhashi, Yuji Suzuki, Yasuhiro Kanaya
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Publication number: 20210278923Abstract: A sensor device is provided and includes electrodes each including first parts and a second part connected to the first parts, the first parts each extending in a first direction, the second part extending in a second direction different from the first direction; and a lead line including a third part connected to the second part and a fourth part connected to the third part, the third part extending in the first direction, the fourth part extending in a third direction different from the first direction, wherein the electrodes are arranged in the second direction, the second part is located between the lead line and the first parts, and the third part is located between the second part and the fourth part.Type: ApplicationFiled: May 24, 2021Publication date: September 9, 2021Inventors: Hayato KURASAWA, Toshihiko TANAKA, Naoki TAKADA, Chihiro TANAKA, Koji ISHIZAKI
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Patent number: 11113498Abstract: According to one embodiment, a detection device includes a substrate, a drive electrode provided on the substrate, a detection electrode provided on the substrate and capacitively coupling with the drive electrode, and a first thin film transistor and a second thin film transistor, electrically connected to the drive electrode, and the first thin film transistor has a withstand voltage higher than a withstand voltage of the second thin film transistor.Type: GrantFiled: March 5, 2019Date of Patent: September 7, 2021Assignee: Japan Display Inc.Inventors: Yoshitaka Ozeki, Hayato Kurasawa, Toshinori Uehara, Koshiro Moriguchi
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Patent number: 11106302Abstract: A display device with a touch detection function is provided and includes a substrate; pixel electrodes including first and second pixel electrodes; drive electrodes including first and second drive electrodes; a display function layer that exerts an image display function based on a pixel signal; a drive electrode driver configured to apply a touch driving signal for touch detection or a common signal for display to the respective drive electrodes; and a source driver configured to apply the pixel signal to the respective pixel electrodes, wherein when the pixel and common signals are provided, the second pixel electrode is in a floating state and the touch driving signal is provided to the second drive electrode, thereby enabling image display function on a first sub-pixel corresponding to first pixel and drive electrodes and touch detection function on a second sub-pixel corresponding to second pixel and drive electrodes to occur concurrently.Type: GrantFiled: April 27, 2020Date of Patent: August 31, 2021Assignee: Japan Display Inc.Inventor: Hayato Kurasawa
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Patent number: 11106301Abstract: A display device includes first electrodes, second electrodes, lines, and a controller, and includes a substrate, pixel electrodes, a display functional layer, and a common electrode stacked in this order. An insulating layer is between the common electrode and the first and second electrodes. The controller controls the pixel electrodes, the common electrode, the lines, and the first and second electrodes. During a display period, the pixel electrodes are supplied with a pixel signal through the lines, and the common electrode is supplied with a common signal. During a first sensing period, the lines are supplied with a first drive signal to generate a magnetic field. During a second sensing period, the lines are supplied with the first drive signal to generate the magnetic field, and an electromotive force corresponding to a distance between the lines and the first electrodes is generated in the first electrodes by the magnetic field.Type: GrantFiled: March 18, 2020Date of Patent: August 31, 2021Assignee: Japan Display Inc.Inventors: Hayato Kurasawa, Hiroshi Mizuhashi, Tadayoshi Katsuta