Patent ID: 6307236
Filing Date: 2001-10-23
Classification: B82Y,H01L,Y10S

Abstract:
A semiconductor integrated circuit device comprising on the same substrate a plurality of kinds of metal oxide semiconductor (MOS) transistors different in thickness of a gate insulation film, wherein said device has main circuitry constituted from at least one first MOS transistor having a gate insulation film with a first value in thickness of those of said plurality of kinds of MOS transistors, and control circuitry including at least one second MOS transistor having a gate insulation film with a second value greater than said first value in thickness, which source-drain path is inserted between said main circuitry and at least one of two power supplies of said main circuitry, wherein said control circuitry controls magnitude of leakage current flowing either between a source and a gate or between a drain and said gate of said first MOS transistor by controlling on/off state of said second MOS transistor.