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What is an LED and what is the impact on our times?

LED technology

More and more people are clear about the benefits and advantages of LED technology; artificial lighting with the most important energy efficiency that currently exists. A Lighting Emitting Diode (LED) is a semiconductor diode capable of emitting light. The semiconductor material is layered in the form of a  p-n junction. When proper voltage is applied to the cables, the electrons can be recombined with the holes inside the device, releasing energy in the form of photons. Hence the name LED.  In its beginnings the main use of the first red visible light LED diode that was marketed was limited to indicating only whether an electrical or electronic equipment or apparatus was connected to the power supply source, or in operation. Subsequently this diode also became part of information panels. Although in its beginnings its use was very limited to other practical applications due to the low variety of colors available and its low light efficiency.

Currently the new materials developed by the researchers have allowed that all colors of the electromagnetic spectrum visible to the human eye can be reproduced including white. And those not visible such as infrared (IR) and ultraviolet (UV). At the same time, the light efficiency of LEDs has been increased several times to such an extent that today they can overcome in some cases the lighting that normally provides an incandescent lamp of more power in watt (W).

The chip

The LED chip is made of a semiconductor material (silicon carbide) of about 5 millimeters, capable of generating light when current is applied to it. The chip is the true heart of an LED luminaire. On its basis are deposited different materials, whose mixture is the one that gives the color and the quality of the light. The chip is protected by a layer of polycarbonate.

A bit of history, in 1879 Thomas Alva Edison invented and patented the incandescent bulb. Thanks to its discovery, for more than a century we have enjoyed lighting. That is completed, since in September 2012 incandescent technology ceased to be manufactured in the EC.

The main reasons are 2, the first is their ineffectiveness, and this type of bulb only takes advantage of 10% of the energy to illuminate.  90% is transformed into heat.

The second, its reduced lifespan of only 1,000 h. makes it in efficient (duration of just 6 months with an average ignition of 5.4 h.  daily). The latest technologies have proven to be much more efficient and less polluting, among which without a doubt, the most efficient is LED Technology.

Its application in informatics

LED applications in computing is very varied. Due to their high efficiency and durability as well as their small size, LEDs are experiencing an expansion in different industrial and daily consumption areas and applications at a breakneck pace. In this case it is used for the electronic sector, due to its small size, low power consumption and its fast on and off. LEDs are the ideal candidates for light signaling of the on, off or other type of information on small devices such as motherboards or computer tower. This technology is also used on computer screens where it is improved by its variety and color ratio, consumption and simplicity.

LED TVs also called OLED are the finest ever. Logically they are TVs that their screen lights up with LED diodes, which are tiny electronic bulbs, like the ones you can see in many traffic lights or car alarms (those lights that flash with alarms or with the cassette).

That is, they are TVs with liquid crystal display, also called LCDs, although the difference is that the screen is fed from the back with LED diodes instead of fluorescent tubes, which is how normal LCDs are illuminated. Let’s not forget the LED TVs are also LCD TVs (liquid crystal display).

What is the advantage of Led Diodes?

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