Patent ID: 7576369
Filing Date: 2009-08-18
Classification: H01L

Abstract:
1. A photodiode comprising: a substrate with at least a front side and a back side; a passivation layer proximate to the front side; an active high resistivity layer proximate to said passivation layer comprising at least five regions of alternating conductivity type; an n+ deep drive in layer proximate to the active high resistivity layer; an anti-reflective layer proximate to said n+ deep drive in layer; and a plurality of contact electrodes in electrical communication with each of said five regions of alternating conductivity type; wherein the five regions of alternating conductivity type comprises a first n+ region adjacent to a first deep diffused p+ region adjacent to a second n+ region adjacent to a second deep diffused p+ region adjacent to a third n+ region and wherein the five regions of alternating conductivity type comprise a thickness of approximately 40 μm.