Patent ID: 6072714
Filing Date: 2000-06-06
Classification: H01L,Y10S

Abstract:
Static memory cell with a pair of transfer MOS transistors, a pair of driver MOS transistors and a pair of load elements, comprisinga first driver MOS transistor formed at the surface of a semiconductor substrate;a second driver MOS transistor formed at the surface of said semiconductor substrate;a first load element connected to the drain region of said first driver MOS transistor and the gate electrode of said second driver MOS transistor;a second load element connected to the drain region of said second driver MOS transistor and the gate electrode of said first driver MOS transistor; said first driver MOS transistor, said second driver MOS transistor, said first load element, and said second load element constituting a flip-flop circuit,a first transfer MOS transistor formed at the surface of said semiconductor substrate, one of the source and drain regions of said first transfer MOS transistor being connected to the drain region of said first driver MOS transistor;a second transfer MOS transistor formed at the surface of said semiconductor substrate, one of the source and drain regions of said second transfer MOS transistor being connected to the drain region of said second driver MOS transistor;an inter-layer insulation film formed on said first driver MOS transistor, said second driver MOS transistor, said first transfer MOS transistor, and said second transfer MOS transistor;a first bit line formed on said inter-layer insulation film, said first bit line being connected to the other of the source and drain regions of said first transfer MOS transistor;a second bit line formed on said inter-layer insulation film, said second bit line being connected to the other of the source and drain regions of said second transfer MOS transistor; anda word line formed on said inter-layer insulation film, said word line being connected to the gate electrode of said first transfer MOS transistor and the gate electrode of said second transfer MOS transistor.