LED filament lamp new technology evolution

LED filament lamp after four years of continuous development, the total output in 2016 exceeded N billion. LED filament lamp with high voltage HVLED and small current drive technology, innovative LED light source and lamp design technology.

The technical threshold is not high LED filament lamp, LED filament lamp design and manufacturing technology popularization and promotion, we love the world, the incandescent light bulb factory and consumer electronics factory are easy to join the production of LED filament lamp. The world needs 9 billion incandescent lamps, energy saving and safe LED filament lamp can help upgrade the incandescent lamp to meet the needs of the world market.

The core technology of LED filament lamp is LED filament and constant current power supply chip. At present, LED filament lamp is composed of rigid straight wire filament LED constant current drive power + + + + stem glass glass bulb lamp ". In 2017, the standard model may be subverted? A new generation of ceramic arc shaped LED filament, metal / graphene LED metal based IC filament, filament, flexible LED filament and arbitrary bending shape has been born! And into industrial production.

The metal based IC filament may cause the filament lamp to be omitted from the current constant current power supply, and may also change the filament layout design of the current filament lamp. AC/DC power supply is not directly driven by the LED filament lamp is also bred, LED filament lamp a new technological revolution is quietly carried out in the!

Arc filament and graphene filament

LED straight wire filament lamp light distribution curve to hudieban, open the LED straight wire filament lamp, the lamp will be dark and the area around the middle of bright. The arc wire LED filament lamp light distribution curve is full moon shape, arc filament LED filament lamp will not have the dark area.

Figure 1 - arc filament light distribution curve is full

Metal / graphene filament is a binding LED lamp chip on a metal substrate, coated with yellow fluorescent powder, the blue LED lamp light yellow phosphors emit white light after impact. The other side of the metal substrate coated with graphene, graphene coated metal substrate will heat quickly radiated, improve LED filament lamp only rely on helium heat, by means of a single way glass bulb heat divergence.

Figure 2 - ceramic arc filament

Figure 3 - metal / graphene filament

IC filament

IC is a filament directly to the constant current IC chip in substrate binding filament, filament in the constant current IC substrate with N single chip LED lamp series as a whole, become a new type of electronic control LED filament filament current.

The mass production of the LED lamp parameters have great dispersion, even if we match efforts in LED filament production, still can not ensure the production of each filament, the same VF. The root LED filament VF some differences in a light bulb, by a constant current power supply, current VF small filament will get more, for a long time, the root VF small LED filament will happen first light.

This is the LED filament lamp of a recessive cancer, but also a difficult to overcome the technical difficulties of COB filament.

The constant current IC chip directly combined to the filament, and LED chip beads bound into a new generation of IC COB. LED was originally just a filament produced by LED packaging factory passive COB devices, after joining the IC constant current control chip, IC and LED for electronic filament filament from passive devices into step into a new generation of active electronic devices! Therefore, the LED filament can control the electric current and the root flow is constant! VF no longer need to be demanding!

Perhaps the LED filament lamp thus eliminates the AC/DC constant current power supply, with the IC LED filament can make the LED filament lamp become a real electronic incandescent lamp!

Figure 4 Schematic diagram of the internal structure of the metal based IC filament

Single channel two port constant current control IC

Single channel port two constant current control chip IC is a highly integrated constant current power supply chip, which is composed of fine tuning, reference voltage, power supply, temperature compensation, temperature protection, current sampling, operational amplifier, constant current control, MOS function module. The utility model has the advantages of simple use, high pressure LED lamp string can be directly driven, no debugging, no sampling resistance, and the application circuit is very simple.

The chip defines a constant current, fixed output 10mA, 12mA, 20mA, 30mA current. Chip built-in 600V MOS. Application line without EMI problem. Built in over temperature protection. Application of IC filament is very convenient, can be HVLED by the N LED constant current filament lamp series chip. Can also be widely used in various types of photoelectric engine.

The application diagram of Figure 5 - ends of constant current control IC

LED filament lamp from the date of birth in the continuous development of technological innovation, in the continuous improvement of the production process automation equipment expansion. Now whether it is filament or power supply chip technology are in urgent need of revolutionary innovation! LED filament lamp is moving towards automation production! Welcome to the world market LED filament lamp! In 2017 the LED filament lamp Chaoyang will stride forward singing militant songs! All LED filament lamp practitioners must keep pace with the times! Keep up with the trend of technological innovation and forge ahead! (author: Yan Zhongguang)

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