Patent ID: 7710477
Filing Date: 2010-05-04
Classification: H01L

Abstract:
1. An image sensing device, comprising: a pixel array comprising a plurality of unit pixels formed in a semiconductor substrate, wherein each unit pixel comprises a plurality of readout elements and at least one light receiving element; and a first wiring layer formed over the pixel array comprising a first pattern of wiring lines, wherein the first pattern of wiring lines comprises electrical interconnections between readout elements in the unit pixels, wherein the first wiring layer is an optical blocking layer to block incident light in each unit pixel to maintain substantially the same sensitivity for each light receiving element of the pixel array, wherein each unit pixel is a shared unit pixel comprising a first sub-pixel unit and a second sub-pixel unit, wherein the first pattern of wiring lines comprises a first unit pattern that is repeated in each unit pixel in the pixel array, and wherein the first unit pattern comprises a sub-unit pattern that is repeated in each sub-pixel unit of each unit pixel in the pixel array, wherein the sub-unit pattern comprises a pad element, wherein the pad element is as an isolated dummy pad element for the first sub-pixel unit.