Patent ID: 8199076

Claim:
A pixel circuit comprising: a light emitting diode having an anode that receives a driving current, and a cathode that is adapted for receiving a scan signal; and a driving circuit including: a switch unit that is adapted for directly coupling to a voltage source, that is operable in one of an on state and an off state according to a voltage signal from the voltage source, and that is adapted for permitting transfer of a data signal when operating in the on state; a capacitor having a first end that is coupled directly and electrically to said switch unit, and a second end; a first transistor having a first terminal that is coupled directly and electrically to said second end of said capacitor, a second terminal that is coupled electrically to said anode of said light emitting diode, and a control terminal that is coupled directly nod electrically to said first end of said capacitor so as to receive the data signal when said switch unit operates in the on state; and a second transistor having a first terminal that is adapted for coupling to the voltage source, a second terminal that is coupled electrically to said first terminal of said first transistor, and a control terminal that is adapted for receiving a reference voltage.