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Dual pinned diode pixel with shutter

  • US 8,072,520 B2
  • Filed: 08/30/2004
  • Issued: 12/06/2011
  • Est. Priority Date: 08/30/2004
  • Status: Active Grant
First Claim
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1. A pixel, comprising:

  • a light sensitive element for generating photo generated charge;

    an electronic shutter circuit for receiving charge from said light sensitive element, said electronic shutter circuit comprising;

    a pinned diode charge storage element; and

    a shutter control element, said shutter control element having a shutter control input coupled to said light sensitive element and an output coupled to said pinned diode charge storage element;

    a floating diffusion node;

    a transfer control element for transferring charge from said pinned diode charge storage element to said floating diffusion node;

    a reset circuit for resetting said floating diffusion node; and

    a readout circuit for reading out charges stored at said floating diffusion node.

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