Content dependent common voltage driver systems and methods

A method for displaying an image frame on an electronic display, comprising:

• processing, using a display pipeline, image data corresponding to the image frame to determine a first expected net charge accumulation in a common electrode due to supplying first pixel voltage signals to a first display pixel group in the electronic display to write a first portion of the image frame;
• determining, using the display pipeline, a first common voltage control signal before the first portion of the image frame is written to the first display pixel group based at least in part on the first expected net charge accumulation, wherein:
• the first common voltage control signal indicates a first target voltage of a common voltage signal to be output from a power amplifier in a display driver to the common electrode;
• and
• the first target voltage of the common voltage signal is determined to offset the first expected net charge accumulation;
• and
• determining, using the display pipeline, a first supply rail control signal before the first portion of the image frame is written to the first display pixel group based at least in part on the first target voltage of the common voltage signal, wherein the first supply rail control signal:
• instructs the display driver to disconnect a first power supply rail from the power amplifier;
• and
• instructs the display driver to connect a second power supply rail to the power amplifier.

A tangible, non-transitory, computer-readable medium that stores instructions executable by one or more processors in an electronic device, wherein the instructions comprise instructions to:

• determine, using the one or more processors, a positive charge injection metric that indicates expected positive charge injection in a common electrode caused by writing a first portion of an image frame to a first display pixel row on a display panel;
• determine, using the one or more processors, a negative charge injection metric that indicates expected negative charge injection in the common electrode caused by writing a second portion of the image frame to a second display pixel row on the display panel, wherein the second display pixel row is adjacent the first display pixel row;
• instruct, using the one or more processors, a common electrode driver to supply a common voltage signal at a target voltage to the common electrode, wherein the target voltage is determined based at least in part on the positive charge injection metric and the negative charge injection metric;
• instruct, using the one or more processors, the common electrode driver to connect one positive voltage rail of a plurality of positive voltage rails to a power amplifier that generates the common voltage signal based at least in part on the target voltage, wherein:
• each of the plurality of positive voltage rails supplies a different positive voltage when connected to the power amplifier;
• and
• the one positive voltage rail supplies a lowest positive voltage among the plurality of positive voltage rails greater than the target voltage over a control horizon.