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10 years of brightness… or 3 years of dark spots? The secret to LED screen lifespan? A tiny "bonding wire" inside its bulbs. This article simplifies gold, silver, copper wires—so you know why pricier screens last, what to ask sellers, and how to skip duds.
When you use an LED bulb or stare at a phone/PC screen, have you wondered about the complex industrial chain behind these products? Tiny as LEDs seem, every step from materials to applications needs high expertise.
From the glowing screen of your smartphone to the energy-saving bulb in your living room, LEDs are everywhere. They light up our cities, power our devices, and even signal to us from traffic lights. But what exactly is an LED, and why has it become the dominant light source of our time?