In addition to a standard plug-in power supply, human power and solar power sources are available, allowing operation far from a commercial power grid.
This innovation results in a much brighter display for a given amount of backlight illumination: while the color filters in a regular display typically absorb 85% of the light that hits them, this display absorbs little of that light.
Most LCD screens at the time used cold cathode fluorescent lamp backlights which were fragile, difficult or impossible to repair, required a high voltage power supply, were relatively power-hungry, and accounted for 50% of the screens' cost (sometimes 60%).
Later generations of the OLPC laptop are expected to use low-cost, low-power and high-resolution color displays with an appearance similar to electronic paper.
The display is the most expensive component in most laptops.
In 2006 there was a major controversy because Microsoft had suddenly developed an interest in the XO project and wanted the formerly open source effort to run Windows.
Negroponte agreed to provide engineer assistance to Microsoft to facilitate their efforts.According to Computer Aid International, in a test conducted in April 2009, the device was ranked as the most power saving among other information and communication technologies in education solutions.The XO-1 is designed to be low-cost, small, durable, and efficient.The grating splits the light from the white backlight into a spectrum.The red, green and blue components are diffracted into the correct positions to illuminate the corresponding pixel with R, G or B.Pricing was set to start at 8 in 2006, with a stated goal to reach the 0 mark in 2008 and the 50-dollar mark by 2010.