Patent ID: 8634229
Filing Date: 2014-01-21
Classification: H01L

Abstract:
1. Memory cell comprising: a field-effect transistor comprising: a first source/drain electrode formed in a film made of a semiconductor material by a first N-doped area, a second source/drain electrode formed in the film made of the semiconductor material by a second P-doped area, an inter-electrode area formed in the film made of a semiconductor material and separating the two source/drain electrodes, a gate electrode covering, at least partially, the inter-electrode area, a counter-electrode covering, at least partially, the inter-electrode area and separated from the gate electrode by the film made of the semiconductor material a first generator for generating a first potential barrier in the semiconductor film, the first potential barrier being opposed to the passage of charge carriers emitted by the first source/drain electrode, a second generator for generating a second potential barrier in the semiconductor film, the second potential barrier being opposed to the passage of charge carriers emitted by the second source/drain electrode, the second potential barrier being shifted from the first potential barrier with respect to an axis linking the two source/drain electrodes, one of the generators being configured so as to generate a potential barrier having a variable amplitude and being electrically connected to the gate electrode, the other generator for generating a potential barrier being electrically connected to the counter-electrode, a circuitry configured for applying a first potential difference between the first source/drain electrode and the second source/drain electrode so as to bias the P-doped electrode at a potential higher than a potential of the N-doped electrode, a control circuit configured so as to: apply a higher potential to the P-doped electrode than to the N-doped electrode during a reading phase of the information stored in the memory cell so as to switch the transistor into the on-state when the capacitor is charged.