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Rongda(Dongguang) optoelectronic Technology Co., Ltd

China Manufacturer with main products: EL billboard , slim light box , EL backlight , EL badge , EL shirt , EL warningsign , EL wire , EL cap , EL decroation , EL & LED gift ,...

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EL products,EL silm light,advertisement box,flash Ad box

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Place of Origin: Guangdong in China


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

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

Usage  of the technology products produced in the luminous, almost no calories, is a cold light source. Therefore, when used to produce thermal radiation does not allow certain occasions, such as the LCD backlight, the more appropriate. Service life of up to 20,000 hours more, with all the life of electronic products match, not neon luminous crystal thin film of light and life affect the normal configuration, also reflects the high life Its use in various fields of economic independence, but also in fear of breakage, even divided into several small pieces, in the small electrodes to retain the original film still on the luminous normal, unlike the commonly used light source. Its minimal heat, to avoid the general lighting source fever led to the shortcomings of the aging products. it is widly used in backlight , billboard, building &car decroations , warning sign ,lighting, gleamy gift  ...

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