Limited-colour screens could boost cellphone battery life
Flat-panel displays based on organic LEDs are tipped to replace the now-ubiquitous LCD panels, thanks to a host of benefits including greater energy efficiency. Now researchers have shown that OLEDs can be made even more frugal by carefully choosing the balance of colours used to make up an image.
07 July 2009
New Scientist
by MacGregor Campbell
Flat-panel displays based on organic LEDs are tipped to replace the now-ubiquitous LCD panels, thanks to a host of benefits including greater energy efficiency. Now researchers have shown that OLEDs can be made even more frugal by carefully choosing the balance of colours used to make up an image.
Each pixel in an OLED screen is made from a spot of polymer that emits coloured light when supplied with power, and each uses different amounts of energy depending on the colour being displayed. At the same brightness, yellow, for example, uses less energy than magenta.
