White point tuning for a display

A method for setting a white point of a display device, the method comprising:

• selecting a white point for the display device including a first, a second, and a third display element each having an on-state, wherein a reflective surface of a respective display element is positioned at a distance from a partially reflective surface such that the respective display element reflects incident light, each distance being dependent on a bias voltage, at least one of the bias voltages being non-zero in the on-state, and adjustable to control a white point of the display device;
• and
• using electronics electrically connected to the first, second, and third display elements to set the at least one non-zero bias voltage.

A non-transitory tangible computer storage medium having stored thereon instructions that, when executed by a computing system, causes the computing system to perform operations, the operations comprising:

• receiving a selection of a white point for a display device,
• accessing information that correlates white points with bias voltages for first, second and third display elements of the display device, and
• using the information to determine the corresponding bias voltages for the selected white point.