|
shallowdeep -> RE: E-readers....need help (2/22/2012 10:52:41 PM)
|
quote:
ORIGINAL: MistressDarkArt
Easy tip for improving battery life on any reading device (especially smartphones which are notorious for sucking current): black background, white lettering
Easy perhaps, but ineffective for most devices. The color displayed actually has no significant influence on power draw for LCD displays. Switching a pixel to black doesn't turn off the light behind the pixel; what happens instead is that liquid crystals twist to block the light, a bit like shutters closing over a window. The light transmission is blocked, so the pixel appears dark, but the light source itself is still very much on and consuming the same power as if the pixel were completely white (or any other color). If you like white on black, by all means go for it – but an attempt to improve battery life with the color scheme will be misguided. Turning down the backlight, on the other hand, can actually save battery life, albeit at the cost of reduced contrast.
E Ink screens wouldn't benefit from the tip, either. OLED displays, which are used in a few phones, would see an improvement in battery life, though.
|
|
|
|
