The pixels themselves aren’t consuming any power in an LCD screen. If your screen is on, every single one of those LEDs turns on, consuming the same amount of power regardless of the color that each individual pixel is flipped to. LCD displays have a bunch of layers that contribute to the end image, but part of the equation is a backlight made up of a bunch of LEDs. On the flip side, though, devices with any form of LCD screen won’t see battery life impacted by color at all. They’ve demonstrated up to 63% reduced battery usage by dark themes on AMOLED displays, and they’ve been adding this functionality into newer versions of Android. Even Google, whose Pixel phones use an AMOLED, has started promoting dark themes as a way to save battery on Android devices. Any other color will draw more power, with white being the most expensive to display in terms of electricity consumption.ĪMOLED is usually more power-efficient than LCD, but not when it comes to white backgrounds. True black (hex 000000) is the only color that will turn off the pixel, though. If a pixel is black, though, it’ll just stay turned off, not drawing any power to illuminate. AMOLED screens work by passing electric currents through organic compounds to light up individual pixels.
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