发光二极管_百度百科
发光二极管，简称为LED，是一种常用的发光器件，通过电子与空穴复合释放能量发光，它在照明领域应用广泛。 发光二极管可高效地将电能转化为光能，在现代社会具有广泛的用途，如照 …
Light-emitting diode - Wikipedia
In electrical engineering, a light-emitting diode (LED) is a semiconductor device that emits light when current flows through it. Electrons in the semiconductor recombine with electron holes, …
什么是LED - 知乎
目前 LED 已在大屏幕显示、交通信号灯、汽车灯、常规照明、特殊照明等方面得到广泛使用，在以后的发展中，LED的应用会更加广泛。
LED | Definition, Light, & Facts | Britannica
Nov 25, 2025 · An LED (light-emitting diode) is a semiconductor device that emits infrared or visible light when charged with an electric current.
Light Emitting Diode (LED): Principle, Advantages, and Uses
Jun 10, 2025 · 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, …
什么是LED？ - 电路设计学习指南R课堂
Nov 13, 2025 · LED是电致发光的器件，其响应速度非常快，通电的瞬间即可点亮。 利用该特性优势，LED还可用于超高速闪烁的显示器、红外遥控器以及利用光信号传输和接收数据的可见光 …
LED 是什麼，又是如何發光的？跟傳統燈泡有何不同？5 分鐘輕鬆搞懂 LED …
Jan 1, 2025 · LED 的英文全名是 Light-emitting diode，也就是發光二極體。 LED 說穿了其實是一種半導體，由三價與五價元素所組成，並會在電流通過時發光。 LED 因為耗電低，體積小、 …
LED的发光原理 | 东芝半导体&存储产品中国官网
发光二极管（LED）的发光原理是向化合物半导体的pn结施加正向电流。 当正向电流通过发光二极管时，载流子（电子和空穴）移动。
LED - Light Emitting Diode: Basics, Types and Characteristics
Sep 20, 2024 · LED or Light Emitting Diode is a very common source of light. An article about Basics of LED, Characteristics of LED and different Types of LED.
Learn About LED Lighting - ENERGY STAR
When designed well, LED lighting is more efficient, versatile, and lasts longer. LEDs are “directional” light sources, which means they emit light in a specific direction, unlike …