Active matrix display precharging circuit and method thereof

A precharge system, appropriate for an active matrix display device having a plurality of data lines, a plurality of scan lines, a plurality of pixels, a first voltage source, and a second voltage source, comprising a precharge circuit having:

• a plurality of first transistors, having gate electrode and drain electrode connected together to function as a diode, of which a first terminal is coupled to the first voltage source;
• a second transistor of which a first terminal is coupled to the second terminals of the first transistors, of which a second terminal is coupled to the data lines, and a control terminal receives a positive precharge signal;
• a plurality of third transistors, having gate electrode and drain electrode connected together to function as a diode, of which a first terminal is coupled to the second voltage source;
• and
• a fourth transistor of which a first terminal is coupled to the second terminals of the third transistors, of which a second terminal is coupled to the corresponding data lines, and a control terminal receives a negative precharge signal.