Display Driver Capacitance Equalization for Voltage Accuracy

The patent applies preliminary action by pre-charging data lines to a reference voltage level before actual data writing. This preliminary charging action reduces the voltage swing required during normal operation, allowing the amplification circuit to settle faster while maintaining voltage accuracy and reducing power consumption. The capacitor circuit stores charge in advance, so when data needs to be written, only a small correction current is needed rather than charging from zero.

The patent implements feedback control through the amplification circuit that continuously monitors the actual data voltage on each data line and compares it with the target voltage. When deviations are detected caused by parasitic capacitance fluctuations, the amplification circuit automatically adjusts the output to correct the voltage error. This feedback mechanism maintains high voltage accuracy while the patent optimizes power consumption by using the capacitor circuit to reduce the magnitude of correction required.

The patent enables shorter drive times for high definition displays by pre-charging data lines to the reference voltage level before data writing. This preliminary action reduces the time required for voltage settling during the actual data transfer, allowing faster pixel driving while maintaining voltage accuracy. The capacitor circuit provides the necessary charge in advance, so the amplification circuit only needs to make small adjustments during the shortened drive time, reducing power consumption despite the increased drive capability requirements for high definition.