Patent ID: 7951690
Filing Date: 2011-05-31
Classification: H01L

Abstract:
1. A method for manufacturing an image sensor comprising: forming circuitry including a metal interconnection on or over a first substrate; forming a photodiode on or over a second substrate; forming an insulating layer over the photodiode; implanting metal ions into the insulating layer; bonding the second substrate to the first substrate, after implanting the metal ions, such that the metal interconnection contacts the insulating layer; exposing the photodiode by removing the second substrate; and patterning the photodiode and the insulating layer to form a plurality of pixels by selectively removing portions of the photodiode and the insulating layer; wherein the metal ions are implanted at an energy and dose sufficient to generate an electrical leakage in the insulating layer such that electrons can be transferred through the insulating layer from the photodiode to the metal interconnection.