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Imaging device and method for driving the same

  • US 9,972,655 B2
  • Filed: 09/11/2014
  • Issued: 05/15/2018
  • Est. Priority Date: 08/23/2012
  • Status: Expired due to Fees
First Claim
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1. An imaging device comprising:

  • a first transistor, a second transistor, a third transistor, each comprising;

    a gate electrode over an insulting surface;

    an gate insulating film over the gate electrode;

    an oxide semiconductor layer over the gate insulating film; and

    a first electrode and a second electrode over the oxide semiconductor layer,a first capacitor;

    a resistor;

    a second capacitor;

    an operational amplifier circuit;

    a first insulating film over at least the first transistor, the second transistor, the third transistor;

    an optical sensor element;

    a second insulating film over the first insulating film and the optical sensor element; and

    a scintillator over the second insulating film,wherein the first electrode of the first transistor is electrically connected to a first portion of the optical sensor element with a first wiring through an opening of the first insulating film and an opening of the second insulating film,wherein the second electrode of the first transistor is electrically connected to a gate of the second transistor and the first capacitor,wherein the first electrode of the second transistor is electrically connected to the first electrode of the third transistor,wherein the second electrode of the third transistor is electrically connected to the resistor,wherein the resistor is electrically connected to an inverting input terminal of the operational amplifier circuit, andwherein an output terminal of the operational amplifier circuit is electrically connected to the inverting input terminal through the second capacitor.

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