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: 11604536Abstract: A display device with a touch sensor having a display function and a touch sensor function is provided. The display device includes a first substrate including a pixel electrode; a first electrode along a first direction; and a second substrate including a second electrode that includes patterns of electrodes along a second direction crossing the first direction and that faces the first electrode and the pixel electrode, wherein upon the display function being activated, the pixel electrode is supplied with a pixel signal, and the second electrode is supplied with common voltage, and upon the touch sensor function being activated, the first electrode is applied with a first signal and the second electrode is configured to receive the first signal to be a second signal as a touch detecting signal.Type: GrantFiled: February 2, 2021Date of Patent: March 14, 2023Assignee: Japan Display Inc.Inventors: Naosuke Furutani, Hayato Kurasawa, Makoto Hayashi
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Patent number: 11580768Abstract: A sensor is provided and includes a first control line; a first signal line; a first auxiliary line; a first detection electrode; a first detection switch connected to the first detection electrode, the first control line and the first signal line; and a first shielding electrode connected to the first auxiliary line, wherein the first shielding electrode is located to overlap the first signal line via an insulating film.Type: GrantFiled: March 31, 2021Date of Patent: February 14, 2023Assignee: Japan Display Inc.Inventors: Hiroshi Mizuhashi, Gen Koide, Hayato Kurasawa, Toshio Soya, Fumitaka Gotoh
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Patent number: 11562595Abstract: A fingerprint sensor is provided and includes substrate; sensor electrodes on substrate; first switches coupled to sensor electrodes; organic layer covering sensor electrodes; control line drive circuit in first direction; signal line drive circuit in second direction orthogonal to first direction; signal lines coupled to first switches; control lines coupling first switches to control line drive circuit; sensor drive electrode surrounding sensor electrodes; second switches between signal line drive circuit and signal lines; and first number of third switches between signal line drive circuit and first number of second switches, wherein distance of sensor drive electrode from surface of substrate is larger than distance of sensor electrodes from surface of substrate, and wherein first number is less than number of all second switches.Type: GrantFiled: February 26, 2021Date of Patent: January 24, 2023Assignee: Japan Display Inc.Inventors: Fumihito Shibano, Hiroshi Mizuhashi, Toshinori Uehara, Kimiyo Nonoyama, Hayato Kurasawa
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Patent number: 11561655Abstract: 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: January 31, 2022Date of Patent: January 24, 2023Assignee: Japan Display Inc.Inventors: Koji Noguchi, Koji Ishizaki, Hayato Kurasawa
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Patent number: 11550190Abstract: 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: December 6, 2021Date of Patent: January 10, 2023Assignee: Japan Display Inc.Inventors: Kenta Seki, Gen Koide, Hayato Kurasawa
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Publication number: 20230004248Abstract: A sensor device is provided and includes detection electrodes each having a mesh shape; and lead lines each including a first part and a second part, wherein the detection electrodes are connected to the lead linens, respectively, the first part has a first end and a second end opposed to the first end, and extends in a first direction, the second part extends in a second direction different from the first direction, the first part is connected to a corresponding one of the detection electrodes at the first end and connected to the second part at the second end, and a width of the first part is different from a width of the second part.Type: ApplicationFiled: September 8, 2022Publication date: January 5, 2023Inventors: Hayato KURASAWA, Toshihiko TANAKA, Naoki TAKADA, Chihiro TANAKA, Koji ISHIZAKI
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Patent number: 11537231Abstract: A display device is provided and includes a first substrate; a second substrate opposed to the first substrate; a liquid crystal layer between the first substrate and the second substrate; a plurality of detection electrodes, the second substrate being located between the detection electrodes and the liquid crystal layer; a shield electrode apart from the detection electrodes in a plane view, the second substrate being located between the shield electrode and the liquid crystal layer; and a resistive layer overlapping the detection electrodes and the shield electrode, the detection electrodes and the shield electrode located between the resistive layer and the second substrate.Type: GrantFiled: September 11, 2020Date of Patent: December 27, 2022Assignee: Japan Display Inc.Inventors: Hayato Kurasawa, Koji Ishizaki, Kohei Azumi
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Patent number: 11520426Abstract: 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: GrantFiled: October 29, 2021Date of Patent: December 6, 2022Assignee: Japan Display Inc.Inventors: Hayato Kurasawa, Yasuyuki Teranishi
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Patent number: 11494020Abstract: 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: GrantFiled: June 23, 2021Date of Patent: November 8, 2022Assignee: Japan Display Inc.Inventors: Hiroshi Mizuhashi, Hayato Kurasawa, Yoshitoshi Kida, Toshinori Uehara, Takayuki Nakanishi
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Publication number: 20220342247Abstract: A display device includes: a plurality of first electrodes arranged in a display region for displaying an image; a second electrode opposed to the first electrodes; a plurality of switching elements that are arranged in the display region and coupled to the first electrodes or the second electrode; a gate line for supplying a scanning signal for scanning the switching elements; a data line for supplying a signal to the switching elements that are coupled to the switching elements; and conductive wire that is opposed to the second electrode via an insulating layer and is coupled to the switching elements.Type: ApplicationFiled: July 6, 2022Publication date: October 27, 2022Inventors: Hayato KURASAWA, Hiroshi MIZUHASHI
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Publication number: 20220326814Abstract: An input device is provided and includes substrate; first metal mesh shape electrodes provided on layer of substrate; second metal mesh shape electrodes provided on same layer of the substrate as first metal mesh shape electrodes; second metal connection electrodes each of which connects adjacent two of second metal mesh shape electrodes on same layer as first metal mesh shape electrodes; insulating film covering second metal connection electrodes; first transparent connection electrodes each of which connects adjacent two of first metal mesh shape electrodes on insulating film; and protective film covering first metal mesh shape electrodes, second metal mesh shape electrodes, and first transparent connection electrodes.Type: ApplicationFiled: June 29, 2022Publication date: October 13, 2022Inventors: Koji ISHIZAKI, Hayato KURASAWA, Hiroshi MIZUHASHI
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Patent number: 11467682Abstract: According to an aspect, a touch detection device includes: first detectors that output first signal values corresponding to contact of detection target objects with first regions; at least one second detector that outputs at least one second signal value corresponding to at least one first force applied by the detection target objects to press at least one second region corresponding to the first regions; and a controller that calculates at least one third signal value corresponding to at least one second force applied by at least one of the detection target objects to the at least one second region, based on the first signal values, the at least one second signal value, and at least one reference value corresponding to a third force per at least one of the first signal values.Type: GrantFiled: August 25, 2020Date of Patent: October 11, 2022Assignee: Japan Display Inc.Inventors: Shinya Iuchi, Masahiro Togashi, Hayato Kurasawa, Michio Yamamoto, Tatsunori Nagai
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Publication number: 20220319220Abstract: A first substrate including a first surface and a second surface on an opposite side of the first surface, the first surface being a detection surface for detecting unevenness of an object coming is contact or close, a second substrate facing the other surface of the first substrate, and a sensor unit provided between the first substrate and the second substrate, and which detects the unevenness of a finger coming in contact with or close to the detection. surface.Type: ApplicationFiled: June 21, 2022Publication date: October 6, 2022Inventor: Hayato KURASAWA
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Publication number: 20220310029Abstract: A sensor-equipped display device is provided and includes display panel including first and second substrates, common electrode, and polarizer; backlight unit which emits light toward display panel, including light guide opposed to polarizer and light source which emits light toward light guide; conductive member arranged at back side of display panel and opposed to polarizer; controller; first flexible printed circuit; and second flexible printed circuit, wherein first flexible printed circuit is connected to display panel, second flexible printed circuit is connected to back side of first flexible printed circuit, common electrode is connected to controller via first flexible printed circuit, second flexible printed circuit comprises first branch portion and second branch portion, first branch portion is connected to light source, and conductive member is connected to controller via second branch portion of second flexible printed circuit and first flexible printed circuit.Type: ApplicationFiled: June 16, 2022Publication date: September 29, 2022Inventors: Kazuyuki KOBAYASHI, Hayato KURASAWA, Hiroshi MIZUHASHI, Masaya TAMAKI, Takeo KOITO, Koji NOGUCHI
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Publication number: 20220300139Abstract: According to an aspect, a display apparatus includes: a substrate; a plurality of pixel electrodes; a plurality of detection electrodes arranged in a matrix in a display area of the substrate; a plurality of detection electrode lines coupled to the respective detection electrodes; a plurality of first electrodes provided in the same layer as the detection electrodes or the detection electrode lines and extending in a first direction; a plurality of switching elements coupled to the respective pixel electrodes; a plurality of signal lines coupled to the switching elements and extending in a second direction crossing the first direction; a coupling member provided in a peripheral area outside the display area and configured to couple ends of the first electrodes to each other; and a drive circuit configured to output a first drive signal in a first sensing period in which an electromagnetic induction method is used.Type: ApplicationFiled: June 7, 2022Publication date: September 22, 2022Inventors: Hayato KURASAWA, Hiroshi MIZUHASHI, Fumitaka GOTOH, Gen KOIDE, Tadayoshi KATSUTA
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Patent number: 11442568Abstract: 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: GrantFiled: May 24, 2021Date of Patent: September 13, 2022Assignee: Japan Display Inc.Inventors: Hayato Kurasawa, Toshihiko Tanaka, Naoki Takada, Chihiro Tanaka, Koji Ishizaki
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Publication number: 20220283460Abstract: A display apparatus includes a first substrate, a second substrate facing the first substrate, lead wirings provided on the first substrate or the second substrate and a first insulator part provided on an upper surface of the second substrate. The lead wirings are arranged in a peripheral region when seen in a plan view and the first insulator part is arranged so as to overlap a display region when seen in a plan view. Second insulator parts or spaces with a permittivity lower than a permittivity of the first insulator part are provided at sides of the first insulator part. The second insulator parts or the spaces are arranged so as to overlap the lead wirings in the peripheral region when seen in a plan view.Type: ApplicationFiled: May 27, 2022Publication date: September 8, 2022Inventors: Koji ISHIZAKI, Masanobu IKEDA, Hayato KURASAWA, Yoshihiro WATANABE
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Publication number: 20220261107Abstract: A display device with a touch detection device is provided and includes display elements that are surrounded by scan lines each extending in first direction and signal lines each extending in second direction crossing first direction; touch detection electrodes opposed to display elements; metal wires disposed on each of touch detection electrodes and extending along signal lines, wherein metal wires being overlapped with corresponding one of signal lines, wherein metal wires are disposed without crossing each other and spaced from each other.Type: ApplicationFiled: May 4, 2022Publication date: August 18, 2022Inventors: Koji ISHIZAKI, Hayato KURASAWA, Kohei AZUMI
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Patent number: 11409398Abstract: An input device is provided and includes substrate; first metal mesh shape electrodes provided on layer of substrate; second metal mesh shape electrodes provided on same layer of the substrate as first metal mesh shape electrodes; second metal connection electrodes each of which connects adjacent two of second metal mesh shape electrodes on same layer as first metal mesh shape electrodes; insulating film covering second metal connection electrodes; first transparent connection electrodes each of which connects adjacent two of first metal mesh shape electrodes on insulating film; and protective film covering first metal mesh shape electrodes, second metal mesh shape electrodes, and first transparent connection electrodes.Type: GrantFiled: September 1, 2020Date of Patent: August 9, 2022Assignee: Japan Display Inc.Inventors: Koji Ishizaki, Hayato Kurasawa, Hiroshi Mizuhashi
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Patent number: 11410451Abstract: A display panel including a display function layer displaying an image in a display area, a cover member including a first face and a second face disposed on an opposite side of the first face and faces the display panel, and a fingerprint sensor including a plurality of first detection electrodes disposed in a sensor base and configured to detect unevenness of an object brought into contact with or approaching the first face of the cover member, a shield electrode disposed to face the plurality of first detection electrodes and configured to suppress a change in capacitance between the first detection electrodes and the shield electrode, and switching elements disposed in correspondence with the first detection electrodes, the fingerprint sensor being arranged between the cover member and the display panel and arranged to overlap with the display area when viewed in a direction perpendicular to the first face are included.Type: GrantFiled: October 22, 2020Date of Patent: August 9, 2022Assignee: Japan Display Inc.Inventors: Toshinori Uehara, Yoshitoshi Kida, Hiroshi Mizuhashi, Hayato Kurasawa, Yuji Suzuki, Shoji Hinata, Toshiya Yamazaki