Circuit and system for driving organic thin-film EL elements

A system for driving organic thin-film EL elements, comprising:

• an anode scanning unit including m rows of anode-scanning switches, each anode-scanning switch electrically connected to a power potential while an organic thin-film EL element electrically connected to the anode-scanning switch is scanned and electrically connected to a ground potential otherwise, wherein m is an integer;
• n columns of constant current sources, wherein n is an integer;
• an m×n matrix of organic thin-film EL elements, the organic thin-film EL elements at the same row electrically connected to a corresponding anode-scanning switch, and the organic thin-film EL elements at the same column electrically connected to a corresponding constant current source;
• a cathode data-driving unit including n columns of cathode data-driving switches, one end of each cathode data-driving switch electrically connected to the constant current source, another end of the cathode data-driving switch electrically connected to a ground potential while a corresponding organic thin-film EL element is selected and electrically connected to a power potential otherwise, and
• a signal control unit for generating control signals to switch the anode-scanning switches and the cathode data-driving switches.