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An Amazing Working Principle of LED Panel Light From:www.lgiled.com   Reporter:pamela   Date:2013/12/7 12:34:24   Tags:industrial-led-lighting

On account of brilliant properties of led panel light, such as its environmental protection, its quick reaction, its appealing design and so on, LED panel lights become more and more popular meanwhile the fantastic working principle of LED panel lights becomes more and more mysterious.

As we know, there are two main parts which are quite necessary in LED panel lights: LED bulb and light guide plate.

In fact, LED is a luminous diode which is a solid semiconductor to directly convert electricity into visible light. A piece of semiconductor chip enclosed in epoxy resin which sticks to a support on one side and connects the positive side of electric power on the other side is the most significant to LED as a pumping heart to a healthy person. The piece of semiconductor chip simply consists of the type P semiconductor in which a relatively big hole occupies the leadership and the type N semiconductor occupied through a great amount of free electron. When two different types of semiconductor link to each other, a P-N combination is formed. Free electron is pushed from type N semiconductor to type P semiconductor where free electron is composited with the hole, when electricity is passing through wire and putting effort on the piece of semiconductor chip, then the combination of free electron and the hole as a huge number of photon leads to releasing energy, which is the working principle of LED. What's more, the length of light determining the color of the light is closely related to the material of P-N combination.

When it comes to working principle of light guide plate, transforming line light source into area light source is the key point of working principle, which originates from the technique of liquid crystal display of the laptop. The reflection point of LED source on either side of light guide plate is really small and seemingly round and the distance between light sources is constant while reflection point of LED source is amazingly big and quite seemingly oval and the distance between light sources is surprisingly compact. When LED light given out from side light sources enters light guide plate and touches the reflection points, some of LED light reflexes to the surface of light guide plate and some directly passes through light guide plate and reaches the surface. As a result, the part of light guide plate close to light source receives more direct light, vice versa. On the other hand, diffuse reflection is less thanks to small and distant reflection points close to light sources than that which is related to big and rigorous reflection points away from light sources. Consequently, different kinds of light mingle each other, leading to homogeneous light effect.

There's no denying that LED panel light becomes so popular nowadays and slightly changes our fast developing society, which depends on two genius working principles.

It's time to widely use LED panel light which is quite green and fantastic!

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