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Detection device, display device, and electronic apparatus

  • US 10,429,981 B2
  • Filed: 11/21/2016
  • Issued: 10/01/2019
  • Est. Priority Date: 03/09/2016
  • Status: Active Grant
First Claim
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1. A detection device comprising:

  • a substrate having a first surface and a second surface opposite to the first surface;

    first electrodes that are provided in a display area of the substrate and that are configured to detect a position of an object being in contact with or in proximity to a first surface side of the substrate or pressure of the object being in contact with the first surface side in a touch detection period;

    a plurality of second electrodes provided along at least one side of an outer periphery of the display area and configured to detect contact of an object in a pressure detection period;

    a conductor that is provided on a second surface side of the substrate apart from the substrate, an electrostatic capacitor being generated between the conductor and the second electrodes;

    a third electrode facing the first electrodes,whereinthe first and third electrodes do not detect the position in the pressure detection period,the position of the object being in contact with or in proximity to the first surface side is detected in the touch detection period, based on an electrostatic capacitor between the first electrodes and the third electrode,a drive signal is supplied to the second electrodes in the pressure detection period, andthe third electrode is disposed in a layer different from a layer of the second electrodes, overlaps with the second electrodes in a vertical direction perpendicular to a main surface of the substrate, and is supplied with a guard signal which has a waveform synchronized with the drive signal in the pressure detection period.

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