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Image sensor with buried light shield and vertical gate

  • US 9,842,875 B2
  • Filed: 05/20/2016
  • Issued: 12/12/2017
  • Est. Priority Date: 08/05/2013
  • Status: Active Grant
First Claim
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1. An image sensor comprising:

  • a first substrate layer comprising;

    a photodetector disposed on a first surface of the first substrate layer;

    a second substrate layer comprising;

    a first storage region disposed adjacent to a second surface of the second substrate, the second surface opposite the first surface;

    a second storage region disposed in the second substrate layer; and

    a buried light shield disposed between the first and second substrate layers, wherein the buried light shield is over the first and second storage regions.

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