Patent ID: 6091086
Filing Date: 2000-07-18
Classification: H01L

Abstract:
An integrated circuit device comprising:a semiconductor layer of first conductivity type, said semiconductor layer including a front-side surface, a backside surface, and a scribe region, said semiconductor layer further including a semiconductor substrate and an overlying epitaxial layer, wherein a plurality of active cells is formed on said front-side surface;a backside layer of second conductivity type overlying said backside surface, said backside layer including a first impurity of the second conductivity type, said first impurity having a first mobility level; anda continuous diffusion region of said second conductivity type through said semiconductor layer to connect said scribe region to said backside layer, said diffusion region including a second impurity of the second conductivity type, said second impurity having a second mobility level, wherein said second mobility level is higher than said first mobility level.