Patent ID: 8836683

Claim:
A boosting circuit for a display panel, comprising: a voltage generator receiving an external first voltage to output a second voltage; a booster boosting an input voltage to output a third voltage; a voltage detector detecting at least one voltage level of the first to third voltages to output a selection signal; and a selector configured to receive the first and second voltages as inputs, select one voltage among the first and second voltages for output as the input voltage to the booster in response to the selection signal, wherein the selector outputs the first voltage as the input voltage to the booster when the selection signal indicates the first voltage is to be boosted and outputs the second voltage as the input to the booster when the selection signal indicates the second voltage is to be boosted, and wherein the voltage detector compares the first to third voltages with corresponding first to third reference voltages, respectively, and outputs the selection signal according to a result of the comparison.