Patent ID: 9166051
Filing Date: 2015-10-20
Classification: G11C,H01L

Abstract:
1. A memory cell made of a MOS transistor formed in a semiconductive layer lying on an insulating layer having a drain, a source, and a central region over-laid by an insulated gate, wherein the central region is divided across its thickness in first and second regions of opposite conductivity types extending parallel to the gate plane, one of the first and second regions closest to the gate having a conductivity type opposite to that of the drain and the source, the other one of the first and second regions lying on the insulating layer and having a conductivity type that is the same as the conductivity type of the source and drain, wherein the one of the first and second regions closest to the gate has a thickness ranging from 5 to 50 nm and a doping level smaller than 10 16 at./cm 3 .