Patent ID: 8519503

Claim:
A photodiode array having a front side and a back side separated by a layer of silicon and a top edge, a bottom edge, a right edge, and a left edge, comprising: a. a plurality of metallic cathode pads extending from a surface of said front side of the photodiode array wherein each of said metallic cathode pads is in physical contact with at least one n+ doped region; b. a plurality of metallic cathode pads extending from a surface of said back side of the photodiode array wherein each of said metallic cathode pads is in physical contact with a second n+ doped region; c. a metallic grid on the front side of said array, wherein said metallic grid forms a plurality of rows in parallel to said top edge and bottom edge and perpendicular to said right edge and left edge, wherein said metallic grid forms a plurality of columns in parallel to said right edge and left edge and perpendicular to said top edge and bottom edge, and wherein said metallic grid interconnects each of said plurality of metallic cathode pads extending from the surface of said front side of the photodiode array; and d. a metallic grid on the back side of said array, wherein said metallic grid forms a plurality of rows in parallel to said top edge and bottom edge and perpendicular to said right edge and left edge, wherein said metallic grid forms a plurality of columns in parallel to said right edge and left edge and perpendicular to said top edge and bottom edge, and wherein said metallic grid interconnects each of said plurality of metallic cathode pads extending from said surface of the back side of the photodiode array.