Patent ID: 8345030

Claim:
A display device comprising: a plurality of display elements; a driver circuit configured to drive the display elements at a plurality of voltages; and a power supply configured to provide the plurality of voltages, the power supply comprising: an inductor having a first end coupled via a source switch to a voltage source and coupled via a first plurality of output switches to a respective plurality of negative outputs and a second end coupled via a ground switch to a ground potential and coupled via a second plurality of output switches to a respective plurality of positive outputs; and a controller adapted to configure the switches into at least: a first configuration in which the source switch is closed, each of the first plurality of output switches is open, the ground switch is closed, and each of the second plurality of output switches is open, a second configuration in which the source switch is closed, each of the first plurality of output switches is open, the ground switch is open, and one of the second plurality of output switches is closed, and a third configuration in which the source switch is open, one of the first plurality of output switches is closed, the ground switch is closed, and each of the second plurality of output switches is open.