The first moment when light-emitting diodes were discovered was absolutely unexpected. Works with the semiconductor Silicon Carbide (SiC) showed that supplied with current it was able to produce light. That was in the beginning of the 20th century. But the invention was not worked on for the light produced by Silicon Carbide was not strong enough to serve for something. That was anyway not the full-stop of the technology progress.

Some scientists from Germany and Russia went on with the invention of such light production but it happened only when 20 years passed. The light stayed dim and the research was about to be closed as before. In 1936 the article on the problem was let out, it included the 1st application of the term electroluminescence and revived the curiosity of led lights. The scientists still didn’t really make progress. Once more in some time in 1950s thanks to the experiments of English specialists the process of development started. So infrared light-emitting diode was invented. So that all was followed by the creation of the 1st visible spectrum LED, that shined red and was created with Gallium Phosphide (GaP).

Finally the technique was developed quickly. Some discoveries in the sphere were presented regularly. Different tints and brighter light were made with the addition of different substrates. First it used to be only red, but then followed orange, pale green, yellow and others up to green. As for the modern blue LEDs , they were created in 90-es as Gallium Nitride was used in the production for the first time. One more progress of led lighting experiments was when the scientists managed to make white light with fluorescent phosphors. We now can face any imaginable diode tint.

Different methods to apply light-emitting diodes were found that time. The light output of LEDs was really low so they could be applied only in monitor lighting and different indicators. Also applying them was really not too cheap. As a result they were found only in some test devices in the laboratories. Only in some time people started to use LEDs in watches, cameras and other gadgets. Production of monitors was the other field for LED lights to be used in for many colors were then possible. Their progress turned to be very useful for digital technolgies.

The screen of the 1st light-emitting diode flat panel television created by James P. Mitchell in 1997 was actually red and monochromatic. Later after some time passed blue LED lights were created which was the great achievement. Now they were cheaper and more actively used. And the end of 90-es is known for the start point of flat panel LED television appearance as just that time all the possible color tints could be modeled.

The scientists managed to make lights more rich and LEDs were entered in many fields of technology. Not only indicators, luckily LED lights were applied in different gadgets designed just for emitting light. Stuff like flash-lights, light signals and city lighting were all supplied with those LED lights. People started applying lighting led products in all the spheres of their lives from house lighting to small flashlights or any different stuff. It happened so as the invention was both quite inexpensive and interesting, it could be of any size and color.

Still the period of the technique progress lasted for really lots of time. Some wonderful invention turned into the thing we can hardly imagine our living without today. It’s interesting that the 1st experiments with light-emitting diodes didn’t promise to give any good result, the specialists couldn’t even imagine then how well the discovery would develop. But the technology was worked on and truly well. We just see it today.