Relating to drivers

A driver circuit for an LED display for switching a light-emitting diode (LED) between a non-luminous state and a luminous state for producing light for a display, the driver circuit comprising:

• an LED;
• a drive current controller arranged to selectively open and close a drive current flow path through the LED thereby selectively to switch the LED between a non-luminous state and a luminous state;
• a current monitoring unit arranged to monitor a current flowing through the drive current flow path to detect switching of the drive current flow path between opened and closed, and to generate a charge demand signal representing the switching of the drive current flow path;
• a charge injector unit for inputting charge into the LED to store said charge within the LED via a junction capacitance of the LED;
• and
• a charge injection control unit arranged to control the charge injector unit to input said charge into the LED upon the charge demand signal representing the opening of the drive current flow path.