Patent ID: 7135756
Filing Date: 2006-11-14
Classification: H01L

Abstract:
1. A cell array comprising a plurality of cells, each cell including a selection bipolar transistor and a storage component, each said bipolar transistor having a first, a second and a control region, and each said storage component having a first and a second terminal, said first region of each bipolar transistor being connected to said first terminal of a respective storage component, said cell array comprising a body of semiconductor material including: a common region of a first conductivity type, forming said second regions; a plurality of active area regions of a second conductivity type and a first doping level, overlying said common region and forming said control regions; a plurality of conduction regions of said first conductivity type formed in said active area regions and forming said first regions; and a plurality of control contact regions of said second conductivity type and a second doping level, higher than said first doping level, formed in said active area regions, wherein each active area region is shared by at least two bipolar transistors.