Display Driver Source Amplifier Control for Blanking Power Reduction

The patent divides the source amplifiers into multiple groups and activates only a subset during blanking periods. Specifically, source amplifiers are segmented such that only those corresponding to source lines requiring leakage suppression are activated, while others remain deactivated. This selective activation maintains charge leakage suppression effectiveness while significantly reducing overall power consumption.

The patent applies different operational states to different source amplifiers based on local requirements. Source amplifiers are activated only in regions where charge leakage suppression is needed, rather than uniformly activating all amplifiers. This local化的 approach ensures that power is consumed only where necessary to maintain display quality and suppress leakage.

The patent dynamically controls the activation state of source amplifiers based on the operational phase. During display update periods, all source amplifiers are activated to provide accurate data voltages. During blanking periods, the system dynamically switches to a reduced set of active amplifiers that specifically suppress charge leakage, optimizing the balance between power consumption and leakage suppression requirements.

The patent implements periodic switching between different operational modes: full activation during display update periods and partial activation during blanking periods. This periodic action pattern allows the system to maintain charge leakage suppression during blanking periods while significantly reducing power consumption compared to continuous full activation.