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Image sensor

  • US 10,304,887 B2
  • Filed: 01/04/2018
  • Issued: 05/28/2019
  • Est. Priority Date: 03/29/2017
  • Status: Active Grant
First Claim
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1. An image sensor comprising:

  • a substrate comprising a plurality of pixels arranged in a two-dimensional array structure, and having a front side and a back side opposite to the front side;

    an interconnection arranged on the front side of the substrate;

    an insulating layer, a color filter, and a micro-lens arranged on the back side of the substrate;

    a pixel separation structure disposed in the substrate, wherein the pixel separation structure includes a conductive layer having a grid structure in a planar view of the image sensor and surrounding each of the plurality of pixels; and

    a back side contact vertically overlapped with and electrically connected to a grid point portion of the grid structure of the conductive layer of the pixel separation structure.

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