Patents by Inventor Hidetoshi Komatsu
Hidetoshi Komatsu 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: 10761647Abstract: According to one embodiment, the touch drive device includes a plurality of drive electrodes arranged side by side to extend in a single direction, a detection electrode which extends in a direction crossing the direction in which the drive electrodes extend, and generates capacitances at intersections of the detection electrode and the drive electrodes, and a driver (DDI) which groups the drive electrodes into a plurality of drive electrode portions each including at least one drive electrode, and performs a touch scanning drive by supplying a touch drive signal (TSVCOM) having a pulse waveform for detection of a closely situated external object to a target drive electrode portion which is a selected one of the drive electrode portions. The number of the drive electrodes included in each of the drive electrode portions and the target drive electrode portion to which the touch drive signal. (TSVCOM) is supplied can be designated.Type: GrantFiled: January 3, 2019Date of Patent: September 1, 2020Assignee: Japan Display Inc.Inventors: Kohei Azumi, Hidetoshi Komatsu, Jin Ota, Hiroshi Mizuhashi, Makoto Hayashi
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Patent number: 10739884Abstract: According to one embodiment, a display device includes a display panel configured to perform display operation based on a pixel signal in a display period, a detector configured to perform touch detection operation in touch detection periods, and a driver configured to control frame operations. The driver is configured to control a first frame operation in a first frame periods including the display period, a first touch detection period and a first display adjustment period, and control a second frame operation in a second frame periods including the display period, a first touch detection period and a second display adjustment period. The second display adjustment period is longer than the first display adjustment period and includes the second touch detection period.Type: GrantFiled: October 4, 2017Date of Patent: August 11, 2020Assignee: Japan Display Inc.Inventors: Jin Ota, Hidetoshi Komatsu, Tsutomu Takabayashi
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Patent number: 10409417Abstract: A display device with a touch detection function includes a control device that performs, in normal operation mode, image display control to exhibit an image display function of a display function layer based on an image signal and performs touch detection control; a touch detecting unit that detects, in the normal operation mode, a position of an object in proximity to or in contact with the touch detection electrode based on a detection signal transmitted from the touch detection electrode; and a touch-detection controller that detects, in sleep mode, the proximity of the object to or the contact thereof with the touch detection electrode. When the touch-detection controller detects the proximity of the object to or the contact thereof with the touch detection electrode in the sleep mode, the control device controls a pixel electrode to a predetermined potential, and thereafter supplies a touch drive signal to a drive electrode.Type: GrantFiled: January 25, 2018Date of Patent: September 10, 2019Assignee: Japan Display Inc.Inventors: Koji Noguchi, Hidetoshi Komatsu, Yasuyuki Teranishi
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Patent number: 10365755Abstract: Each of frame display periods is for performing a display operation based on image information on one frame and each of detection surface touch detection periods is from when touch detection is started to when the detection is completed on the entire detection surface. At least one frame display period of the frame display periods and at least one detection surface touch detection period of the detection surface touch detection periods are started based on a display synchronization signal. The display operation and the touch detection operation are performed in a time-division manner in the one frame display period. The length of the one detection surface touch detection period is longer than the one length of the frame display period.Type: GrantFiled: January 18, 2017Date of Patent: July 30, 2019Assignee: Japan Display Inc.Inventors: Hiroki Uchiyama, Hidetoshi Komatsu, Naoshi Goto, Shunsuke Noichi
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Publication number: 20190138146Abstract: According to one embodiment, the touch drive device includes a plurality of drive electrodes arranged side by side to extend in a single direction, a detection electrode which extends in a direction crossing the direction in which the drive electrodes extend, and generates capacitances at intersections of the detection electrode and the drive electrodes, and a driver (DDI) which groups the drive electrodes into a plurality of drive electrode portions each including at least one drive electrode, and performs a touch scanning drive by supplying a touch drive signal (TSVCOM) having a pulse waveform for detection of a closely situated external object to a target drive electrode portion which is a selected one of the drive electrode portions. The number of the drive electrodes included in each of the drive electrode portions and the target drive electrode portion to which the touch drive signal. (TSVCOM) is supplied can be designated.Type: ApplicationFiled: January 3, 2019Publication date: May 9, 2019Applicant: Japan Display Inc.Inventors: Kohei AZUMI, Hidetoshi Komatsu, Jin Ota, Hiroshi Mizuhashi, Makoto Hayashi
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Patent number: 10222898Abstract: According to an aspect, a display device with a touch detection function includes a display panel and a touch panel. The touch panel includes first electrodes extending in one direction. The display panel includes second electrodes interesting with the first electrodes in planar view and serving as common electrodes that supply a common potential to pixels in a display area. The display panel also includes pixel signal lines and scanning signal lines interesting with each other in planar view. The pixel signal lines and the scanning signal lines are made into a floating state in a touch detection period in which a first drive signal is applied to the first electrodes, and a second drive signal is applied to the second electrodes at predetermined intervals to perform touch detection based on change in voltage of the first electrodes and change in voltage of the second electrodes.Type: GrantFiled: June 1, 2016Date of Patent: March 5, 2019Assignee: JAPAN DISPLAY INC.Inventors: Daisuke Ito, Koji Noguchi, Hidetoshi Komatsu, Toshiaki Fukushima
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Patent number: 10216324Abstract: According to one embodiment, the touch drive device includes a plurality of drive electrodes arranged side by side to extend in a single direction, a detection electrode which extends in a direction crossing the direction in which the drive electrodes extend, and generates capacitances at intersections of the detection electrode and the drive electrodes, and a driver (DDI) which groups the drive electrodes into a plurality of drive electrode portions each including at least one drive electrode, and performs a touch scanning drive by supplying a touch drive signal (TSVCOM) having a pulse waveform for detection of a closely situated external object to a target drive electrode portion which is a selected one of the drive electrode portions. The number of the drive electrodes included in each of the drive electrode portions and the target drive electrode portion to which the touch drive signal (TSVCOM) is supplied can be designated.Type: GrantFiled: August 31, 2017Date of Patent: February 26, 2019Assignee: Japan Display Inc.Inventors: Kohei Azumi, Hidetoshi Komatsu, Jin Ota, Hiroshi Mizuhashi, Makoto Hayashi
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Publication number: 20180164946Abstract: A display device with a touch detection function includes a control device that performs, in normal operation mode, image display control to exhibit an image display function of a display function layer based on an image signal and performs touch detection control; a touch detecting unit that detects, in the normal operation mode, a position of an object in proximity to or in contact with the touch detection electrode based on a detection signal transmitted from the touch detection electrode; and a touch-detection controller that detects, in sleep mode, the proximity of the object to or the contact thereof with the touch detection electrode. When the touch-detection controller detects the proximity of the object to or the contact thereof with the touch detection electrode in the sleep mode, the control device controls a pixel electrode to a predetermined potential, and thereafter supplies a touch drive signal to a drive electrode.Type: ApplicationFiled: January 25, 2018Publication date: June 14, 2018Inventors: Koji NOGUCHI, Hidetoshi KOMATSU, Yasuyuki TERANISHI
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Publication number: 20180095575Abstract: According to one embodiment, a display device includes a display panel configured to perform display operation based on a pixel signal in a display period, a detector configured to perform touch detection operation in touch detection periods, and a driver configured to control frame operations. The driver is configured to control a first frame operation in a first frame periods including the display period, a first touch detection period and a first display adjustment period, and control a second frame operation in a second frame periods including the display period, a first touch detection period and a second display adjustment period. The second display adjustment period is longer than the first display adjustment period and includes the second touch detection period.Type: ApplicationFiled: October 4, 2017Publication date: April 5, 2018Inventors: Jin Ota, Hidetoshi Komatsu, Tsutomu Takabayashi
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Publication number: 20180095576Abstract: According to one embodiment, a display device driven in a first drive mode for displaying images of a frame in a first frame period and a second drive mode for displaying images of a frame in a second frame period longer than the first frame period is provided. The display device includes a display panel configured to perform display operation for displaying an image based on a pixel signal and a driver configured to switch a drive mode between the first drive mode and the second drive mode. When a switch signal is received while the display device is driven in the second drive mode, the driver is configured to shorten the second frame period and switch the second drive mode to the first drive mode.Type: ApplicationFiled: October 4, 2017Publication date: April 5, 2018Inventors: Nobuhiko Yokoo, Jin Ota, Hidetoshi Komatsu
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Patent number: 9916034Abstract: A display device with a touch detection function includes a control device that performs, in normal operation mode, image display control so as to exhibit an image display function of a display function layer based on an image signal and performs touch detection control; a touch detecting unit that detects, in the normal operation mode, a position of an object in proximity to or in contact with the touch detection electrode based on a detection signal transmitted from the touch detection electrode; and a touch-detection controller that detects, in sleep mode, the proximity of the object to or the contact thereof with the touch detection electrode. When the touch-detection controller detects the proximity of the object to or the contact thereof with the touch detection electrode in the sleep mode, the control device controls a pixel electrode to a predetermined potential, and thereafter supplies a touch drive signal to a drive electrode.Type: GrantFiled: February 2, 2017Date of Patent: March 13, 2018Assignee: Japan Display Inc.Inventors: Koji Noguchi, Hidetoshi Komatsu, Yasuyuki Teranishi
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Publication number: 20180068627Abstract: According to one embodiment, a display device includes a display unit and a driver unit. The driver unit includes a display drive unit, a power supply unit and a control unit. The control unit instructs a display period in which the image is displayed in the display unit and a non-display period in which the image is not displayed to the display drive unit, and instructs mitigation driving which mitigates a difference in an electrical load of the display drive unit between the display period and the non-display period to the power supply unit in the non-display period.Type: ApplicationFiled: November 14, 2017Publication date: March 8, 2018Inventors: Jin OTA, Hidetoshi KOMATSU, Ryutaro NITOBE, Nobuhiko YOKOO
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Publication number: 20170364203Abstract: According to one embodiment, the touch drive device includes a plurality of drive electrodes arranged side by side to extend in a single direction, a detection electrode which extends in a direction crossing the direction in which the drive electrodes extend, and generates capacitances at intersections of the detection electrode and the drive electrodes, and a driver (DDI) which groups the drive electrodes into a plurality of drive electrode portions each including at least one drive electrode, and performs a touch scanning drive by supplying a touch drive signal (TSVCOM) having a pulse waveform for detection of a closely situated external object to a target drive electrode portion which is a selected one of the drive electrode portions. The number of the drive electrodes included in each of the drive electrode portions and the target drive electrode portion to which the touch drive signal (TSVCOM) is supplied can be designated.Type: ApplicationFiled: August 31, 2017Publication date: December 21, 2017Applicant: Japan Display Inc.Inventors: Kohei AZUMI, Hidetoshi Komatsu, Jin Ota, Hiroshi Mizuhashi, Makoto Hayashi
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Patent number: 9842556Abstract: According to one embodiment, a display device includes a display unit and a driver unit. The driver unit includes a display drive unit, a power supply unit and a control unit. The control unit instructs a display period in which the image is displayed in the display unit and a non-display period in which the image is not displayed to the display drive unit, and instructs mitigation driving which mitigates a difference in an electrical load of the display drive unit between the display period and the non-display period to the power supply unit in the non-display period.Type: GrantFiled: September 15, 2015Date of Patent: December 12, 2017Assignee: Japan Display Inc.Inventors: Jin Ota, Hidetoshi Komatsu, Ryutaro Nitobe, Nobuhiko Yokoo
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Patent number: 9811147Abstract: According to one embodiment, the display device includes a display panel and touchsensor, the touchsensor outputs a detected signal from detection electrode. An energy saving control section sets a first period in which the detected signal is to be captured, and a second period which is a period except the first period, and controls, in the first period, at least power supply voltage of an image processing section, a panel control section and the display panel to an off-state or to a low voltage.Type: GrantFiled: April 7, 2015Date of Patent: November 7, 2017Assignee: Japan Display Inc.Inventors: Hidetoshi Komatsu, Jin Ota, Hiroshi Mizuhashi, Koji Noguchi
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Patent number: 9798415Abstract: According to one embodiment, a display device includes a plurality of display elements arranged in a matrix, a plurality of scanning lines, a plurality of signal lines, and a controller configured to control display by sequentially supplying an image signal and a control signal to the plurality of signal lines and the plurality of scanning lines, respectively, wherein the controller repeats a display period in which the display is controlled and a display blanking period in which the display is paused to display a frame image, and at least two types of display periods with different lengths are used when a frame image is displayed.Type: GrantFiled: September 11, 2015Date of Patent: October 24, 2017Assignee: Japan Display Inc.Inventors: Kohei Azumi, Hidetoshi Komatsu, Jin Ota, Hiroshi Mizuhashi
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Patent number: 9791954Abstract: According to an aspect, a display device includes: a display section that has a first period to consume predetermined power and a second period to consume less power than in the first period, and power consumption of which periodically changes by repeating the first period and the second period; a smoothing capacitor that stabilizes power supplied to the display section; and a power consumption unit that consumes the supplied power in the second period.Type: GrantFiled: December 21, 2016Date of Patent: October 17, 2017Assignee: Japan Display Inc.Inventors: Yasuyuki Teranishi, Koji Noguchi, Hidetoshi Komatsu, Gen Koide, Daisuke Ito
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Patent number: 9785277Abstract: According to one embodiment, the touch drive device includes a plurality of drive electrodes arranged side by side to extend in a single direction, a detection electrode which extends in a direction crossing the direction in which the drive electrodes extend, and generates capacitances at intersections of the detection electrode and the drive electrodes, and a driver (DDI) which groups the drive electrodes into a plurality of drive electrode portions each including at least one drive electrode, and performs a touch scanning drive by supplying a touch drive signal (TSVCOM) having a pulse waveform for detection of a closely situated external object to a target drive electrode portion which is a selected one of the drive electrode portions. The number of the drive electrodes included in each of the drive electrode portions and the target drive electrode portion to which the touch drive signal (TSVCOM) is supplied can be designated.Type: GrantFiled: March 31, 2015Date of Patent: October 10, 2017Assignee: Japan Display Inc.Inventors: Kohei Azumi, Hidetoshi Komatsu, Jin Ota, Hiroshi Mizuhashi, Makoto Hayashi
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Patent number: 9715322Abstract: According to an aspect, a display device includes: a display section that has a first period to consume predetermined power and a second period to consume less power than in the first period, and power consumption of which periodically changes by repeating the first period and the second period; a smoothing capacitor that stabilizes power supplied to the display section; and a power consumption unit that consumes the supplied power in the second period.Type: GrantFiled: December 31, 2015Date of Patent: July 25, 2017Assignee: Japan Display Inc.Inventors: Yasuyuki Teranishi, Koji Noguchi, Hidetoshi Komatsu, Gen Koide, Daisuke Ito
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Publication number: 20170205943Abstract: Each of frame display periods is for performing a display operation based on image information on one frame and each of detection surface touch detection periods is from when touch detection is started to when the detection is completed on the entire detection surface. At least one frame display period of the frame display periods and at least one detection surface touch detection period of the detection surface touch detection periods are started based on a display synchronization signal. The display operation and the touch detection operation are performed in a time-division manner in the one frame display period. The length of the one detection surface touch detection period is longer than the one length of the frame display period.Type: ApplicationFiled: January 18, 2017Publication date: July 20, 2017Inventors: Hiroki UCHIYAMA, Hidetoshi KOMATSU, Naoshi GOTO, Shunsuke NOICHI