Drive system for memory matrix panel

In a drive method for a memory matrix panel which comprises a light-emitting body having hysteresis behavior responsive to application of a desired AC voltage, a plurality of horizontal electrodes disposed on a first major surface of the light-emitting body and a plurality of vertical electrodes disposed on a second major surface of the light-emitting body, each cross point of the both electrodes providing a light-emitting unit point in a matrix array, wherein a period of the applied AC voltage includes at least three sections, said method comprising:

• applying a horizontal maintenance pulse having an amplitude necessary to maintain light emission to the plurality of horizontal electrodes during the first section of the AC voltage period prior to the writing, erasing or reading of information;
• applying a vertical maintenance pulse having an amplitude necessary to maintain light emission to the vertical electrodes during the second section of the AC voltage period prior to the writing, erasing or reading of information;
• applying an enable pulse having the shape identical with that of the horizontal maintenance pulse but the phase shifted into the third section of the AC voltage period to the vertical electrode asociated with a selected point to perform the writing, erasing or reading of information on such selected point;
• and
• applying to the horizontal electrode associated with such selected point a write, erase or read pulse each having a predetermined amplitude necessary to perform the write, erase or read operation, the respective amplitudes being superimposed on the enable pulse.