Patent ID: 8654602
Filing Date: 2014-02-18
Classification: G11C

Abstract:
1. A circuit made on a semiconductor-on-insulator substrate comprising a thin layer of semiconducting material separated from a base substrate by an insulating layer that extends through the entire substrate; the circuit comprising: a first transistor having a first channel, a second transistor having a second channel, with the transistors provided in serial association between first and second terminals for applying a power supply potential, each of the transistors comprising a drain region and a source region in the thin layer, a channel extending between the source region and the drain region, and a front control gate located above the channel, wherein each transistor has a back control gate formed in the base substrate below the channel of the transistor and capable of being biased in order to modulate the threshold voltage of the transistor, and wherein at least one of the transistors is configured for operating in a depletion mode under the action of a back gate signal which will sufficiently modulate its threshold voltage.