Patent ID: 8049294
Filing Date: 2011-11-01
Classification: H01L,Y02E

Abstract:
1. A photodiode comprising: a substrate with at least a front side and a back side; a front side region within said front side of the substrate, wherein said front side region comprises at least one PN-junction, wherein said PN-junction comprises a first doped region of a first conductivity type, wherein said front side region comprises a second doped region of a second conductivity type, wherein said first doped region and second doped region are physically separated by a portion of said substrate, and wherein said first conductivity type is different than said second conductivity type; a back side region within said back side of the substrate, wherein said back side region comprises at least one PN-junction, wherein said PN-junction comprises a first doped region of a first conductivity type, wherein said back side region comprises a second doped region of a second conductivity type, wherein said first doped region and second doped region are physically separated by a portion of said substrate, and wherein said first conductivity type is different than said second conductivity type; and at least one conduit for forming an electrical connection from the PN-junction in the front side region to the PN-junction in the back side region, wherein the conduit comprises a) a p+ dopant layer and b) a polysilicon or polyimide filling, wherein said photodiode is manufactured from a silicon wafer having an n-type conductivity.