Image display device and method of controlling same

An image display device with active matrix comprising:

• a) a number of light emitters forming a network,
• divided into rows and columns;
• b) means for supplying power to the emitters;
• c) means of controlling the emitters comprising:
• a current modulator for each emitter, the modulator comprising a source electrode, a drain electrode, a gate electrode, the modulator being able to be passed through by a drain current, to supply said emitter for a voltage between the source electrode and the gate electrode, greater than or equal to a trigger threshold voltage of this modulator;
• a storage capacitor for each emitter, said capacitor comprising a first and a second terminals and being able to store electrical charges at the gate electrode of each modulator;
• addressing means able to address display data to the emitters of each column;
• selection means able to select the emitters of each row, the selection means comprising a selection switch for each emitter, the selection switch being specifically for enabling addressing data supplied by the addressing means to be applied between the gate electrode and the source electrode of each modulator;
• and
• d) at least one inverse bias voltage generator specifically for applying an inverse bias voltage of the bias of said addressing data between the gate electrode and the source electrode of each modulator;
• wherein the image display device also comprises:
• an inverse bias switch for each modulator to compensate for the variation in the trigger threshold voltage of each modulator, said inverse bias switch being connected between, on the one hand, the gate electrode of each modulator and the first terminal of the storage capacitor of this emitter, and, on the other hand, the or each inverse bias voltage generator and the second terminal of the storage capacitor of this emitter;
• and
• control electrodes, each control electrode being able to drive all of the inverse bias switches of a row of emitters.