Circuit for driving alternating current thin film electroluminescence device using relative potential difference

A circuit for driving an alternating current thin film electroluminescence device using a relative potential difference, comprising:

• a first voltage supply unit for generating a voltage corresponding to the sum of a luminescence threshold voltage and a modulation voltage;
• a second voltage supply unit for generating the luminescence threshold voltage;
• a relative potential difference generating unit for directly receiving an input clock signal in the delayed and inverted form and switching the output voltages from the first and second voltage supply units to perform AND and OR operations for the voltages, thereby generating a column electrode voltage, a reference voltage and a row electrode voltage;
• a pair of drive integrated elements having a push-pull structure and respectively adapted to receive the column electrode voltage and the reference voltage from the relative potential difference generating unit, perform a push-pull operation in accordance with an input gate signal, and thereby output the column electrode voltage;
• and
• another drive integrated element having an open-drain structure and adapted to receive the row electrode voltage from the relative potential difference generating unit and output the received row electrode voltage in accordance with the input gate signal.