> The dark portions of the screen block the backlight, so the darker it is, the less light gets to your eyes. If you think it blocks enough backlight you’re de

> The dark portions of the screen block the backlight, so the darker it is, the less light gets to your eyes. If you think it blocks enough backlight you’re deluding yourself. Display a pure black image (with a small white square in the middle to defeat dynamic contrast) and turn off the screen. From TVs to laptops, as long as it’s LCD the difference is obvious.