2013 LED lighting ten hot spots related to inventory

A, OLED

OLED is called organic light emitting diode (OLED), which is based on organic semiconductor material. OLED has many advantages, such as all solid state, active luminescence, high contrast, ultra thin, low power consumption, no view limit, fast response speed, wide working temperature range, easy to realize flexibility and large area, low power consumption and so on. At present, OLED has been applied in the field of small size display, such as cell phone terminals, and the development potential in the field of large-size TV and lighting has also been recognized by the industry.

OLED, it is from 2012 officially boarded the stage lighting, although currently only a small role, but there is no small LED alternative threat.

OLED application in the field of lighting, light effect is a small test. In the display area of OLED brightness of 100 - 300cd/cm2 can be applied, but in the course of lighting, brightness should be at least 1000 - 3000cd/cm2. The next few years, OLED and LED in the field of lighting in the rate of change, will depend on the progress of the OLED light efficiency.

Two, PSS

PSS (Patterned Sapphire Substrate), which is grown on sapphire substrate by dry etching mask, the mask patterned by standard photolithography process, using ICP etching etching sapphire, and remove the mask, then the growth of GaN material in the material, the GaN longitudinal development into horizontal. On the one hand, can effectively reduce the bit dislocation density of GaN epitaxial material, thereby reducing the active area of the non radiative recombination, enhance the internal quantum efficiency, reduce reverse leakage current and improve the life of LED; on the other hand, the active region of the light emitted by the GaN and sapphire substrate interface, multiple scattering changes exit light reflection angle LED, increase the light flip probability from the sapphire substrate, thereby improving the light extraction efficiency. Therefore, PSS a time to become an extension of the main manufacturers competing to enhance the brightness of the mainstream technology, the rapid popularization of the second half of 2013 PSS has accounted for nearly 80% of the world's LED sapphire substrate.

While the first half of the time, sapphire substrate flat film prices fell into the trough, the substrate manufacturers generally into a loss. The PSS because of strong market demand, a time when the market price of more than 2 times more than flat film to attract sapphire substrate overweight deployment, hoping to break through the plight of revenue losses. However, with the new capacity gradually put into use, the price of PSS is also an alarming rate of decline. While some manufacturers have now considered the use of more advanced nPSS technology, nPSS pitch less than 1um, brightness can be increased by 3% to than PSS. The imprint of the cost of more than 1 dollars lower than the etching, stability and consistency of performance is also better. Look forward to rely on PSS to save the decline of the substrate factory I am afraid again disappointed, but the path of technological progress who can guess?

Three, non sapphire substrate

In addition to the successful commercialization of SiC CREE substrate, people have become accustomed to the substrate material is sapphire. However, in 2013, the first time the sapphire substrate program on the status of the sapphire substrate has launched a challenge.

The so-called SC3 CREE in this new generation technology platform, continuous refresh industry launched a variety of light effect production of LED products, December launch of XLamp series MK-R in 1W and 25 DEG C temperature conditions, can provide high luminous efficiency up to 200lm/W. Once again boost the SiC substrate LED in the light of the overall strength of competition in the vanguard position.

Non sapphire substrate program, not just a common concern for the industry, the government will also be an important basis for research into the policy vision, selected ten Dali, of course.

Four, eutectic Technology

Another popular packaging technology in the 2013 is eutectic.

The eutectic is at a relatively low temperature eutectic solder eutectic material fusion phenomenon, eutectic alloy directly from solid to liquid, but not through the plastic stage, is a liquid and generate two solid balance reaction. Eutectic temperature.

The key of eutectic welding technology is the selection of eutectic material and the control of welding temperature. In the case of eutectic welding, the pure tin (Sn) or gold tin (Au-Sn) can be used as the contact layer on the bottom of the grain. When the substrate is heated to a suitable eutectic temperature, gold or silver penetratesinto gold tin alloy layer, alloy layer changes increase the melting point, the eutectic layer and LED curing fastening welding heat sink or substrate. The eutectic layer and the heat sink or the substrate are fully bonded as a whole, breaking the heat bottleneck from the chip to the substrate in the cooling system, improving the life of the LED.

2013 LED lighting ten hot spots related to inventory

Five, HVLED

HVLED as its name implies is the high voltage LED, compared with the traditional DCLED, with low cost, high efficiency, high efficiency, high efficiency, low power consumption and other advantages. Specifically:

1, HVLED chip directly on the chip to achieve a series of parallel, so that it will work in the low current and high voltage, the chip will simplify the solid crystal, the number of bonding, packaging costs.

2, HV chip in the unit area of the formation of a number of microcrystalline particles integration, to avoid the inter chip BIN, such as wavelength, voltage, brightness of the consistency of the problem;

3, HVLED chip is the power type chip driver at low current, with red LED chip + yellow phosphor formed warm white, form than the traditional DCLED+ red fluorescent powder + yellow phosphor powder warm white light with high luminous efficiency, and shortened the LED warm white and cold white light effect package gap. High color and light that is more easily achieved;

4, HVLED because of its high working voltage, easy realization of packaging products close to the electric voltage, improve the conversion efficiency of the power supply; the working current is low, the product in the application of line loss will be significantly lower than that of the traditional DC power LED chip.

Six, AC drive IC

This creative design equipped with IC instantly became a bright spot, the industry has been tracking the IC models and manufacturers. Therefore I think this IC changes for the LED industry has just begun fermentation, if used in a wider range, and in the aspects of safety and power factor and does not constitute an obstacle, the traditional LED power industry will lose the value of existence, and the design of the device will become more simple.

Seven, domestic MOCVD

The long-term layout of the Chinese development of semiconductor lighting industry, have local MOCVD equipment manufacturers may be needed, if an industry rapid development, the upstream key equipment is completely dependent on foreign enterprises, will inevitably fall into the disadvantage of most of the profits have been taken.

The Ministry issued a "high-end equipment manufacturing industry" 12th Five-Year "development plan" put forward, to 2015, high-end equipment manufacturing industry sales revenue exceeded 6 trillion yuan, in the equipment manufacturing industry in the proportion increased to 15%; by 2020, sales of high-end equipment manufacturing industry in the equipment manufacturing industry accounted for more than 25% to to improve. Ministry of science and Technology issued the semiconductor lighting industry in 12th Five-Year plan also proposed that by 2015, large-scale MOCVD equipment, key raw materials will be achieved localization.

Eight, MLCOB

MLCOB (Multilen schipson board) is based on COB structure, directly to every single LED chip package a lens, avoid light loss caused by the total reflection light, but also has the advantages and characteristics of COB.

Nine, intelligent lighting

Intelligent lighting refers to the intelligent lighting control system through the wireless network communication, to achieve the intelligent control of lighting equipment. Lighting equipment through intelligent control, extended to a variety of control methods, such as PC, PDA, computer remote control, remote telephone also has the light brightness adjustment, light soft start, timing control, scene settings and other functions; and to achieve safety, comfort, energy saving, high efficiency.

Ten, modular

Visionary entrepreneurs think of the LED module, which is the most influential should belong to the Zhaga alliance. The alliance is a LED light engine at present the most popular international interchangeability (Interchangeability) interface standard, aimed at promoting global LED lighting system interface standard, so as to realize the compatibility and interchangeability among products of different manufacturers, in order to protect the interests of consumers to buy.