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The difference between UV LED and LED

Ether Photoelectric Ltd | Updated: Oct 31, 2017

UV LED, it is believed that the people in this term LED industry will not be unfamiliar, as the highest priority of the current LED manufacturers of the transformation target, people's attention to it is also rising. LED industry is becoming more and more competitive, leading enterprises only to cover the sky, not seeking a new breakthrough, can only sit and die.

So how much do you know about UV leds? Maybe some people will know that it's a uv LED, it's an LED and what's the difference between an LED and a normal LED?

UV LED, UV LED, is a kind of LED, and the wavelength range is: 260-400 nm, which is a single wavelength of invisible visible, generally below 400 nm. Through special design, UV LED can send a complete continuous ultraviolet band to meet the production needs of sealing edge, printing and other fields. Line light source has a very long life, cold light source, no radiation, life is not affected by opening and closing times uniform irradiation, high energy, improve the production efficiency, does not contain toxic substances than the traditional light source safer, more environmentally friendly.

There are many advantages:

(1) long life: the life of LED-UV lamp is more than 10 times that of traditional mercury lamp, and the service life is not affected by the number of switching times.

(2) instantaneous switch, without preheating to achieve the maximum power ultraviolet output, can be switched on immediately after shutdown.

(3) the energy is high, the light output is stable, the radiation uniformity is good, and the production efficiency is improved.

(4) the effective irradiation area can be customized, ranging from 20mm to 1000mm.

(5) there is no mercury and no ozone, which is a safer and more environmentally friendly alternative to traditional lighting technology.

(6) the energy consumption is low, and the power consumption is only 10% of the traditional mercury lamp curing machine, which can save 90% power.

(7) maintenance costs are almost zero, and the use of uv-led curing equipment will save at least 10,000 yuan per year.

(8) because the uv irradiation device is very compact with the relevant supporting device, it is easy to set up the installation space and pipeline construction without the larger mechanical installation space.

Leds are short for leds. Compounds containing gallium (Ga), arsenic (As), phosphorus (P), nitrogen (N), and analogs. When electrons and holes are combined with radiation, they can be used to make light-emitting diodes. In a circuit, the instrument is light, or consists of a text or a digital display. Gallium arsenide led red, gallium phosphating, silicon carbide diode yellow, gallium nitride diode blue. The leds we see are mostly visible light, and UV leds emit UV light.

The light of the UV LED light power core is relatively low, not through single lamp bead, achieve the result that we want only by encapsulating, will be a lot of UV LED lamp bead collection together, to achieve the result that we want. So the question is, how do you solve this problem by putting so many lights on a set? UV LED cold light source is correct, but it is not that diodes are not hot. So you have to solve the problem in terms of encapsulation.

Encapsulation of lamp bead want to heat dissipation, shiny surface cannot be realized clearly, so can only from the back of a way to the back of the lamp bead is the chip and the substrate, the silicon chip that is can't, so can only start from substrate.

Substrate thermal conductivity is decided to heat can be rapid export to the key of the radiator, within the scope of the best known is heat dissipation material graphene, but at the moment and he was able to use graphene make base board, and there is no way to production, after all, graphene is still at the experimental stage. So in addition to the graphene, the best material is ceramic, metal base board insulation needs to be done, will seriously affect the effect of thermal conductivity, ceramic substrates as insulation materials, can be directly with the chip bonding, will heat the total export.

Ceramic matrix UV LED was introduced, and caused a considerable stir, LED under the condition of market saturation, even if it is only a concept, be badly in need of transformation LED manufacturers will hasten if potential, more don't talk about is a mature product. UV LED outbreak in the near future but also for domestic headed by si meriton ceramic substrate production has formed a certain scale, although is not on a par, America, Japan and south but for domestic small and medium-sized LED companies to see the hope.