Light-emitting diode - Wikipedia
A light-emitting diode (LED) [5] is a semiconductor device that emits light when current flows through it. Electrons in the semiconductor recombine with electron holes, releasing energy in …
LED | Definition, Light, & Facts | Britannica
2025年10月13日 · An LED (light-emitting diode) is a semiconductor device that emits infrared or visible light when charged with an electric current.
LED Definition & Meaning - Merriam-Webster
The correct past and past participle of lead is spelled led. If you aren’t sure whether to use led or lead as the verb in your sentence, try reading it aloud to yourself.
Learn About LED Lighting - ENERGY STAR
LED stands for light emitting diode. LED lighting products produce light up to 90% more efficiently than incandescent light bulbs. How do they work? An electrical current passes through a …
Light Emitting Diode (LED): What is it & How Does it Work?
2012年2月24日 · What is a Light Emitting Diode (LED)? A Light Emitting Diode (LED) is a special type of PN junction diode. The light emitting diode is specially doped and made of a special …
What is LED Lighting: Definition, Working Principle and Components
2025年6月3日 · LED lighting refers to the use of a light emitting diode as a source of illumination. Unlike traditional incandescent bulbs or fluorescent lamps, an LED is a semiconductor device …
Light Emitting Diode (LED): Principle, Advantages, and Uses
2025年6月10日 · A light-emitting diode (LED) is a small electronic device that emits light when an electric current flows through it. LED works by passing electricity through a semiconductor, …
Light Emitting Diode Basics | LED Types, Colors and Applications
2024年9月16日 · This article is composed as a brief understanding guide to LED, which includes a brief introduction, the electrical symbol of LED, types, construction, characteristics, LED …
Amazon.com: Led Bulbs
Upgrade your home with LED bulbs that save on energy costs while providing ample, adjustable illumination. Explore options with smart capabilities.
What is LED ( Light Emitting Diodes ) | LED Lighting Supply
2019年12月3日 · LED dates back to the early 1900s when a British physicist discovered silicon carbide crystals could produce light when electric currents were touched. In 1962, GE scientist …