AMOLED display technology is now being used by many top smart phones. If the AMOLED display displays a black background in a wallpaper or application for a long time, it will be able to greatly save power consumption for the phone. Some well-known brands such as Samsung Galaxy Note 4, Galaxy S5, the latest version of Moto X, and even the just unveiled Nexus 6 are using AMOLED screens. Can these models sacrifice bright colors for longer battery life? Woolen cloth? Why does the AMOLED screen display a black interface consume less power? This requires the difference between the traditional LCD screen
and its light-emitting principle. For example, LG G3, HTC One M8 and other models all use LCD backlit displays, which display different pictures by emitting light from each pixel. In this case, black is no different from pixels of other colors. It also makes the pixels opaque by emitting light. Although it does not look bright, it is still in a light-emitting state. Displaying black can save power for AMOLED, because these pixels can be completely turned off at this time. However, some people mistakenly believe that AMOLED's technical characteristics for displaying black power saving are proportional to the degree of black, and that dark and gray colors that are closer to black also save power. This is a wrong view. Although there is a proportional relationship between brightness and power consumption, only when it displays black, the AMOLED screen can achieve the power saving effect, and other colors are not good. As one of the advantages compared with LCD screens, AMOLED device users should be thankful for this unique light-emitting mechanism that can bring a certain power saving effect, so it is best for AMOLED device users to adjust the background of the screen to black. However, when the device is displaying bright colors, especially white, AMOLED and LCD consume more power (because all pixels that display white will be turned on). However, I believe that many users are more concerned about how much power will be saved if the background of AMOLED screen devices is adjusted to black than using other color backgrounds? We can draw conclusions through testing.
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