What's LED?
Source: | Author:Joseph Wong | Published time :2023-06-06 | 175 times view: | Share:

About LED, What's LED?


LED is the abbreviation of the English word Lighting Emitting Diode, the Chinese name for the lighting-emitting diode, 


Is the way to convert electrical energy directly into visible lighting semiconductor devices.



LEDs are lighting emitting diode, everyone seems to know that right? But how or why do they emit light? An incandescent lamp 


produce  light when electricity flows and heats a filament in a gas sealed lamp.Fluorescent lamps emit light when voltage is 


transmitted by Electrodes that allow electrodes to excient phosphors as they pass from one end of the tube vacuum to the 


other, But what's about LEDs?


If there is no gas, filament, phospher, vacuum or arc, how do they produce light?


LEDs produce light in a very unique way; they produce light via a process called Electro-luminescence, hum......?


Electroluminescence is a rather complex process that starts by turning a semi conductor material into a conducting material.


We know that many metals like copper conduct electricity so they are known as conductors, and they are materials that never


Conduct, rubber for example doesn't conduct electricity, so it is known as inslutator, but they are materials known as semi conductors


That under normal conditions don't conduct, but under the right circumstances can conduct electricity.


Let me give you a simplified explanation of how and why semi conductors conduct electricity. I apologize in advance to any quantum 


physicist or PHD Electrical engineer who may object to this over simplification of a very complex process; like one of them is going to 


read my blog, right.


Everything in universe is made of atoms, and atoms have a positively charged nucleus and negatively charged electrons. Some atoms


have more electrons and others have less. For example, an LED semi conductor atom is typically a silicon crystal that has 4 electrons


and all of atoms bond perfectly to their neighbors, leaving no free electrons(negatively-charged particles) to conduct electrical current.


But when you drop the silicone material by introducing an impurity that charges the balance, either adding free(extra) electrons or 


Creating gaps(holes) where electrons can go, either of these additions make a semi conductor material conductive.


A semiconductor with extra hole is called N-type(negative) material, since it has extra positively-charged electrons. In N-type material,


Free electrons can move from a negatively charged area to positively charged area. Remember, opposites attract!


A semiconductor with extra hole is called P-type(positive) material, since it has extra positively-charged gas called holes.When 


Excited with current the negative electron leaves its atom and the P-type material's positive attraction draws the free negative 


electron into its hole, and the hole also moves toward the electron, so on and so forth. As an electron travels to a hole, it carries 


Energy, but in order to fit into the hole, it must release any extra energy, and when it does, the extra energy is released in the 


form of a photon(light).


To understand this, imagine a metal marble being drawn between two different materials toward a magnetic hole that is also moving 


Towards the marble, and when the marble gets to the hole it creats a spark(light) as it falls into the hole. When we maintain a steady 


flow of electrical current to the diode, it continues the process of allowing the electrons to flow from the negative charged material


and fall into the positive charged holes which maintain a steady stream of light out of the LED.



2), Benefits of LED Lighting



LED Lighting is More Efficient.


One of the main benefits to LED lighting is that it is more efficient. You can get more life out of each Neon Strip and it is also energy 


Efficient so it helps the environment, too. When it comes to LED lights, you've probably seen these before even if you did not realize


What you were seeing.



Longer lifetime.


Yet another one of the best benefits of LED lighting is that they are built to last. They have a much longer lifetime than your average


Bulb and you can use this to your advantage in many ways. Not only does it help you save from purchasing and replace lights but 


It also means you can put them in places that are more difficult to reach or would be more trouble to replace often.Now you can see


Some of most common benefits of LED lighting. It's a bit easier to see why more and more people choosing LEDs for their lighting 


Options. It just makes sense when you can get more for your money and get a longer lasting, more efficient light source instead.



Not Restricted by Size.


Another great benefit to LED lighting is that there are fewer to not restriction on size. Unlike other type of lighting, LEDs are not 


Restricted by size. They can be as small as 2mm in size or less which makes it possible to use them in places you would not 


use an ordinary bulb or lighting source. This opens up many doors of opportunity to how you will use your LEDs.



Variety of Color.


Another benefits to LED lighting is that it is easier to get a wide array of color that cannot always be done with regular bulbs.They 


don't require filters to produce the different colors. Due to how the diodes are contructed. This makes it much easier to get them 


in nearly any color you can think of, even neon shades.



3), Classification of LED lighting.


 Residential LED lighting


Office LED lighting


Retail LED lighting


Commercial LED lighting


Industrial LED lighting


Architectural LED lighting


Decorative LED lighting


Among all, LED decorative lighting is our main products.including COB LED strip, SMD LED strip, PVC LED neonflex strip, Silicone 


LED neon rope lights and custom Acrylic LED neon signs for indoor corridor, closet, TV setting wall, cabinet decorative lighting, 


cove lighting, outdoor facade lighting projects in contour of the buildings, bridge, tower, church, theater, commercial advertising 


purpopses, etc.