Apart from giving more uniform brightness , a full array of led backlights allows the screen to be dimmed selectively in places where a scene needs to be dark .
除了提供更为一致的亮度，全阵列led背光能使屏幕上那些影像需要变暗的地方选择性的暗下来。
It requires only about half as much energy as the conventional white leds used in backlights , which should help extend the battery life of mobile devices , as well as providing richer , more saturated colours .
Part of what makes mr jones so angry-and , as with all the best polemics , a luminous anger backlights his prose-is that this sneering and humiliation is inflicted by the well-off on those who have the least .
