Patent ID: 8081146

Claim:
A multifunctional driver controller comprising: a selection unit receiving a control signal, a first reference voltage, and a second reference voltage, the selection unit selecting either one of the first reference voltage and the second reference voltage per the control signal, as a reference voltage, wherein the first reference voltage being lower than the second reference voltage is for powering a current-controlled device being a white light-emitting diode (WLED), and the second reference voltage being higher than the first reference voltage is for powering a voltage-controlled device being an organic light emitting diode (OLED); and a control circuit receiving the reference voltage from the selection unit and a feedback voltage from a load being driven by a controlled analog signal from the control circuit, wherein the controlled analog signal is a controlled voltage signal when the load is a voltage-controlled device, and the controlled analog signal is a controlled current signal when the load is a current-controlled device, the control circuit compares the reference voltage with the feedback voltage and adjusts the controlled analog signal in reference to a difference between the reference voltage and the feedback voltage until the feedback voltage converges to the reference voltage.