EL luminous films as electroluminescence, also known as fieldluminescence, the English translation of Electro Luminescent(referred EL), it is converted to electricity as a form of solarenergy, but not in the conversion process will not heat fever,Therefore, commonly known as "cold light." EL, a luminous greenenvironmental protection, safety, energy conservation a high-technew products, the cold is an advanced light source.

It is an optical phenomenonand electrical phenomenon where a material emits light in responseto an electric current passed through it, or to a strong electricfield. This is distinct to light emission resulting from heat(incandescence) or from the action of chemicals(chemoluminescence). EL is the result of radiative recombination ofelectrons and holes in a material (usually a semiconductor). Theexcited electrons release their energy as photons - light. Prior torecombination, electrons and holes are separated either as a resultof doping of the material to form a p-n junction (in semiconductorelectroluminescent devices such as LEDs), or through excitation byimpact of high-energy electrons accelerated by a strong electricfield (as with the phosphors in electroluminescentdisplays).

Usage  of thetechnology products produced in the luminous, almost no calories,is a cold light source. Therefore, when used to produce thermalradiation does not allow certain occasions, such as the LCDbacklight, the more appropriate. Service life of up to 20,000 hoursmore, with all the life of electronic products match, not neonluminous crystal thin film of light and life affect the normalconfiguration, also reflects the high life Its use in variousfields of economic independence, but also in fear of breakage, evendivided into several small pieces, in the small electrodes toretain the original film still on the luminous normal, unlike thecommonly used light source. Its minimal heat, to avoid the generallighting source fever led to the shortcomings of the agingproducts. it is widly used in backlight , billboard, building&car decroations , warning sign ,lighting, gleamy gift ...