DRIVER OUTPUT STAGE

摘要

This disclosure provides systems, methods and apparatus for providing an output voltage to be used in a display device. In one aspect, a circuit may include switches and a digital-to-analog converter (DAC). A charge recycling circuit may include a capacitive voltage divider providing voltage supplies for the switches to select from and provide to the DAC. A storage capacitor may be configured to be coupled one at a time and in parallel with individual capacitors of the capacitive voltage divider. The storage capacitor may store charge that may be reused. Additionally, a data control circuit may provide control signals for the switches and the DAC.

主权项

1. A circuit comprising:
a control unit having a first output and a second output; a selector unit having an output and a control input, the control input of the selector unit coupled with the first output of the control circuit, the selector circuit capable of providing an output voltage at the output based on the control input of the selector circuit; and a first voltage source selector unit having a control input, a first output, and a second output, the control input of the first voltage source selector unit coupled with the second output of the control unit, the first output of the first voltage source selector unit coupled with the first power supply input of the selector unit, the second output of the first voltage source selector unit coupled with the second power supply input of the selector unit, wherein the first voltage source selector unit is capable of selecting a first voltage source from a plurality of voltage sources to provide to the first output of the first voltage source selector unit and a second voltage source from the plurality of voltage sources to provide to the second output of the first voltage source selector unit based on the control input of the voltage selector.