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Reduce the cost of the LED lamp
The main way the cost of the LED chip occupies a main portion of the LED light cost, thereby reducing the LED is to reduce the cost of the LED chips.
LED chip technology development lies in the base material and the epitaxial growth techniques. Substrate material from the the traditional sapphire material, silicon and silicon carbide, the development of new materials such as zinc oxide, gallium nitride. In a few short years, by means of a series of technical improvements, including chip structure, surface roughening treatment and multi-quantum well structure design, LED light efficiency to achieve a great breakthrough.
Low cost silicon substrate, technical progress, but the luminous efficiency are still not satisfied, and if you maintain this pace of development, once they reach a higher level, the silicon substrate to become the most important technology programs become an inevitable choice, companies will also huge economic returns.
Color LED lights
In the high-luminance white LED, a small portion of blue light having a longer wavelength Stokes shift occurs. This is a good thing, which makes the phosphor layer can be used in many different colors LED lamp manufacturers to extend the emission spectra, and effectively improve the LED color rendering index (CRI). Using phosphor white LED high CRI is the cost, because the Stokes shift will cause white LED efficiency is lower than the efficiency of the single-color LED. However, for most lighting applications prefer to use high CRI slightly lower efficiency LED lights.
Improve the reliability of the LED lamp system
The overall efficiency of LED life and reliability through system optimization can be improved.
Light source: compact, efficient, choose the color and output power.
The control and drive: the use of electronic circuitry to achieve a constant current LED driver and control.
Thermal Management: To achieve a longer service life must be controlled LED nodes temperature thermal model calculations and the use of new materials and new technology LED lamp technology hotspot.
The optical element: a lens, a reflector, or a light guide material is that the light focused on the target area, or dispersed in the surrounding, which according to design requirements may be.
Improve the efficiency of the LED lamp power
Whether current limiting type constant current control, power op amp to control the constant current power supply, we must solve the power supply problem. Switching power supply chip work requires a relatively stable DC voltage for its chip supply, the chip operating current ranges from a MA to MA. Like FSD200 NCP1012 HV9910, such chips is high-pressure self-feed, using it is convenient, but the high-pressure feed, resulting in the rise of the IC heat, because the IC to withstand about 300V DC, just a little current, even if an MA, 0.3 watts damaged consumption. LED power in general but about 10 watts, the loss of a few tenths of watts what can the efficiency of the power to pull down a few points. Typical as QX9910. Down to take power, with the resistance, loss resistance, about have losses it a few tenths of watts. There is magnetically coupled transformer on the main power coil a winding, like the auxiliary winding of the flyback power to avoid the loss of a few tenths of a watt of power. This is why isolated power transformer also one of the reasons is that in order to avoid the loss of few tenths of a watt of power, efficiency mention a few points.
With the increasingly serious problem of greenhouse gas emissions, approaching the critical point of the Earth's self-regulating, countries have introduced policies, governments around the world, including China, must without delay the implementation of energy-saving and emission reduction (carbon dioxide), led lights are the most energy efficient green electric light, natural lighting energy saving option, also accelerating gradually reduce the cost and price of LED lights, the speed of its popularity, in 2020, the market share of LED lights will be more than 50%.
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