Patent ID: 7132713
Filing Date: 2006-11-07
Classification: B82Y,H01L

Abstract:
1. A controllable conduction device comprising: an insulating layer, a source region, a barrier region and a drain region overlying the insulating layer, the source, barrier and drain regions being configured in an overlying relationship with one of the source and drain regions overlying the barrier region and the other of the source and drain regions underlying the barrier region to define on the substrate an upstanding structure with an upwardly extending side, a generally vertical conduction path for charge carriers extending between the source and drain regions, and a gate on the upwardly extending side of the upstanding structure for controlling charge carrier flow along the conduction path, the barrier region being formed of material which provides an internal electrostatic barrier potential to provide a barrier for inhibiting charge carrier flow along the generally vertical conduction path between the source and drain regions, the barrier height being configurable selectively in response to an external bias applied to the gate so that charge carriers can pass along the path between the source and drain regions.