Why Your Screen Won't Go Dark Enough at Night

You've dimmed your phone to minimum, but your bedroom still glows like a landing strip. The problem isn't you — it's the LEDs. This episode unpacks why pulse width modulation, quantum efficiency droop, and leakage current all conspire to keep your screens bright even at "zero." We explore the three engineering bottlenecks that prevent displays from reaching true sub-nit darkness, and explain why the circadian health conversation is shifting away from blue light filters toward something far simpler: just turn the lights down. If you've ever wondered why minimum brightness isn't dim enough, or why morning sunlight matters more than any app, this one's for you.