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，如照明、平板显示 …

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只是当作光源，在 …

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。

Nov 25, 2025 · An LED (light-emitting diode) is a semiconductor device that emits infrared or visible light when charged with an electric current.

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.

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, which releases …

LED是被称为"发光二极管"的半导体，名称取至 "Light Emitting Diode" 的首字母。 1993年基于氮化镓制造出的高亮度蓝色LED实现商用化，随之制造出白色LED，该白色LED作为第4照明光源备受注目。

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, releasing …

LED（Light Emitting Diode）， 发光二极管，是一种能够将 电能 转化为 可见光 的固态的 半导体器件，它可以直接把电转化为光。 LED的心脏是一个半导体的晶片，晶片的一端附在一个支架上，一端 …

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 incandescent and CFL, which …