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, thereby …

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

Dec 8, 2025 · LED는 저전력 및 장수명 등의 특징을 가진다. 정격 범위 내에서 사용하는 한 발광 소자 자체는 비교적 긴 수명이며, 열에 의한 열화가 수명 결정 요인이 된다. LED 조명은 수명과 전기 효율이 …

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 …

Feb 24, 2012 · This page is about Solid State Light or Light Emitting Diode or LED including the introduction of the working principle of LED. The features of LED are also mentioned in this article.

Sep 16, 2024 · 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 Drivers and many.

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 …

Feb 5, 2013 · 자외선부터 적외선까지, 전기에너지를 빛에너지로 발산하는 LED 그렇다면 LED는 어떻게 빛을 발하는 것일까요? LED는 쉽게 설명하면, 전기에너지를 빛에너지로 변환시켜주는 ‘광반도체’입니다.

Dec 3, 2019 · 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 Nick …

The light-emitting diode (LED) is today's most energy-efficient and rapidly developing lighting technology. Quality LED light bulbs last longer, are more durable, and offer comparable or better light …