Which display saves Battery life: AMOLED or LCD?

Often the question of “Which smartphone do you advise me that will saves battery life,” becomes very complicated, because each battery lasts depending on the type of use that we make of it. Anyway one of the most frequently asked questions is "How to saves battery life of our smartphone?" and, as the usual advice can be helpful, now we show you another reason why the life of our battery can be slightly elongated.

The issue is particularly also because the main culprits of poor battery life are the displays of smartphones that, depending on the model, can be LCD or AMOLED (including the main). What are the differences?

AMOLED vs LCD: Who consumes more battery?

Despite the eyes of the inexperienced may seem the almost the same and the same thing, but between AMOLED and LCD there are net differences:

LCD Display: This type of screens mounted on many of the Android devices on the market, when it displays an image, not reflected by its own light but uses that of panels placed under them. Thus, even a black image, with a display LCD, it shows lit and never darkened, because the panel at the bottom there will always return a light pulse.

Display AMOLED: These displays, however, are more intelligent in that they use their power to provide the image on the screen that then we’re going to look at. The question battery, then, seems to be better with these panels, with a black background, use less energy as each individual pixel will be powered separately.

Essentially, therefore, the trick of the black background is functioning only on devices that mount an AMOLED display (i.e the setting of a screen very dark or totally black to exploit the special characteristic of AMOLED panels), since, as we have already said, a background black could make remain deactivated few pixels and, accordingly, could make us saves battery life up to 6% per hour.

In the smartphone with display LCD, this trick does not work because even with a black background, the panels will always continue to light and, consequently, to consume battery.

Therefore, AMOLED display saves battery life of your smartphone.


References:
http://freaksense.com/2014/09/which-display-saves-battery-life/