Patent ID: 8040304

Claim:
An active matrix organic light emitting diode (AMOLED) panel, comprising: an AMOLED pixel unit; a scan driving unit, coupled to the AMOLED pixel unit; and a data driving unit, coupled to the AMOLED pixel unit and a voltage source, the data driving unit comprising: a reference current source circuit, for providing a reference current I; (N+1) mirror output circuits, coupled to the reference current source circuit for outputting (N+1) corresponding data currents to the AMOLED pixel unit, wherein N is a positive integer, the m-th data current of the (N+1) data currents is 2 m times the reference current I for each integer m of the integers 0˜N; and (N+1) switch elements, disposed in correspondence with the (N+1) mirror output circuits for respectively controlling the (N+1) data currents to be outputted to the AMOLED pixel unit, wherein the data current outputted to the AMOLED pixel unit has a smallest current equal to the reference current I., whereby in an on condition, the (N+1) switch elements transmit to the AMOLED pixel unit a total current equal a sum of the (N+1) data currents, (1+2+. . . +2 m )I, which is equal to (2 N+1 −1)I.