Patent ID: 7384854

Claim:
A method of forming a diode comprising the steps of: providing an original substrate not doped with anode and cathode regions; forming an anode of a first conductivity type and a cathode of a second conductivity type disposed below said anode on said original substrate without removing any portion of said original substrate and without replacing with another substrate material, wherein at least one of said cathode and anode comprise a plurality of vertically abutting diffusion regions; forming a plurality of isolation regions in said original substrate, said cathode and anode being disposed between adjacent ones of said plurality of isolation regions, said plurality of isolation regions extending deeper into said original substrate than said cathode and said anode; and forming a plurality of isolation structures in said original substrate, each of said plurality of isolation structures disposed between and in direct contact with at least a portion of said anode and respective said adjacent ones of said plurality of isolation regions, said plurality of isolation structures extend to a depth less than that of said cathode.