A full range of applications make LEDs a universal lighting technology
LEDs are everywhere.
But what exactly is an LED?
In this guide, we teach you the basics.
Afrank99 / CC BY-SA 2.0 / Creative Commons
LED Definition
LED stands for Light-Emitting Diode, an electronic gear made of two types ofsemiconductor material.
An LED does the same thing.
It blocks the flow of electricity in one direction while letting it move freely in the other.
However, it took almost four decades before the invention was put to practical use.
These initial LEDs were used primarily in remote control devices, such as earlytelevisionremotes.
Eventually, LEDs were used in calculators as numeric displays.
The first high-brightness blue LED made its debut in 1994.
High-power and high-efficiency blue LEDs appeared a few years later.
These devices tend to be pricey and difficult to manufacture at large scales.
However, as the manufacturing process continues to mature, so does LED lighting.
FAQ
QLED and LED are used in reference to TVs.
OLED stands for Organic Light-Emitting Diode.
In terms of TVs, an OLED TV doesn’t have a backlight, but an LED TV does.
OLED TVs make excellent colors with sharp contrast ratios.
