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, …
LED - Light Emitting Diode: Basics, Types and Characteristics
Sep 20, 2024 · In this article, we have seen about basics of LED and few important characteristics of LED. In the next tutorial, we will see How an LED works and the construction of an LED.
发光二极管 - 维基百科，自由的百科全书
Nov 27, 2025 · 使用LED作背光的LCD显示器常被生产商叫作LED显示器或LED电视机等，原因可能是为了强调新产品与旧产品有所不同，但其实这些显示器的影像仍是以LCD产生，LED只是 …
这些LED基础知识，你了解吗？ - 知乎
一、LED基础知识 1、LED发光原理 LED（Light Emitting Diode）是发光二极管的简称。 由镓（Ga）与砷（AS）、磷（P）的化合物制成的二极管，当电子与空穴复合时能辐射出可见 …
LED灯 - 维基百科，自由的百科全书 - zh.wikipedia.org
LED灯 是指利用 发光二极管 （LED）作为 光源 的 灯，一般使用半导体LED制成。 LED灯的寿命和 发光效率 可达白炽灯的几倍，和 一体式荧光灯 相比也高出不少 [1][2][3]，其中Cree等厂家 …
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.