Low current drive of light emitting devices

A method for controlling an array of light emitting devices comprising the following steps:

• (a) when a first light emitting device from a column of light emitting devices is to be turned on, charging capacitance of the first light emitting device utilizing a first current source until a voltage across the first light emitting device is equal to a predetermined voltage;
• (b) when the voltage across the first light emitting device is equal to the predetermined voltage, shutting off the first current source;
• and,
• (c) utilizing a second current source to supply current sufficient to cause the first light emitting device to emit light to a first brightness level.

Control circuitry for an array of light emitting devices, circuitry comprising:

• a first column line connected to each light emitting device in a column of light emitting devices;
• and,
• first column circuitry comprising:
• a current supply used to supply current to selected light emitting devices in the column of light emitting devices, and
• a switch connected to the first column line and to an output capacitance of a low voltage power supply;
• wherein when the voltage on the first column line is to be discharged, the switch is turned on allowing the voltage to be discharged to the output capacitance of the low voltage power supply.