Patent ID: 7692220
Filing Date: 2010-04-06
Classification: G11C,H01L

Abstract:
1. A semiconductor device, comprising: at least one storage cell, comprising: a store gate structure formed from a semiconductor material doped to a first conductivity type and in contact with a channel region comprising a semiconductor material doped to a second conductivity type; at least a first source/drain region and a second source/drain region separated from one another by the channel region; and a control gate structure, comprising a semiconductor layer doped to the first conductivity type and formed over a substrate surface, the control gate structure being in contact with the channel region, and further including: a discharge channel comprising a semiconductor region doped to the first conductivity type that contacts the store gate and a bulk region comprising a semiconductor material doped to the first conductivity type, the discharge channel having a dopant concentration less than that of the store gate and the bulk region.