Patent ID: 7563684

Claim:
A process for manufacturing an array of cells, the process comprising: providing a body of semiconductor material of a first conductivity type; implanting, in said body, a common conduction region of said first conductivity type; forming, in said body, above said common conduction region. a plurality of active area regions of a second conductivity type and a first doping level; forming, on top of said body, an insulating layer having first and second openings after said first and second openings are formed, implanting first portions of said active area regions through said first openings with a dopant agent of said first conductivity type, thereby forming, in said active regions, second conduction regions of said first conductivity type; after said first and second opening are formed, implanting second portions of said active area regions through said second openings with a doping agent of said second conductivity type, thereby forming control regions of said second conductivity type and a second doping level, higher than said first doping level, each said control contact region forming, together with said conduction region and said common conduction region, a selection bipolar transistor; and forming, on top of said body, a plurality of storage components, each storage component having a terminal connected to a respective second conduction region and defining, together with said bipolar transistor, a cell of said cell array.