Patent ID: 8022452

Claim:
An image sensor comprising: a substrate layer; a transistor having a source/drain region formed in the substrate layer, wherein the source/drain region is connected to a voltage source; a trench formed in the substrate layer adjacent to the source/drain region that is connected to the voltage source, wherein the trench is filled with an opaque material; one or more layers disposed over the substrate layer; an opening formed through the one or more layers to expose a surface of the opaque material in the trench; and one or more layers of material that transmits light propagating at a given range of wavelengths disposed over the transistor and the one or more layers disposed over the substrate layer, wherein the one or more layers of material fills the opening and at least one of the one or more layers of material covers the exposed surface of the opaque material, wherein the one or more layers of material comprises two or more different color filters, and wherein the opaque material in the trench and the one or more layers of material that transmits light propagating at the given range of wavelengths form a glow blocking structure that is disposed between an imaging area of the image sensor and the source/drain region of the transistor.