LEDs enter the door of the lighting field, making the brightness of the light become the target of the manufacturers. After all, when the LEDs are assembled into a lighting bulb, the total lumens output is whether the LED lamp can meet the lighting requirements and replace the biggest key of the traditional bulb. However, high-power LED chips can achieve higher lumens in single-crystal packages, but they are far less efficient than low-power LED chips. This also makes the LED downstream packaging factory separate the two factions, one is dedicated to the mainstream high-power LED chip packaging factory, the other is the main low-power LED chip for poly-package (multi-chippackage) packaging plant.
The technical application of high-power LED single crystal packaging has matured in the lighting market. These technologies also prove that LED applications are feasible on the illumination, but the LED single crystal package is easy to produce glare and uncomfortable when applied to illumination. The color of the color, technically needs to break through. There are no other better solutions than secondary optics such as reticle or lens. In addition, the high-power single-chip package is quite mature in mass production technology, but a single chip operates under high current (>700mA), and a hot spot with a relatively high heat density will be generated on the chip, which makes the package factory In the way of packaging, it is also necessary to consider the thermal stress on the decarburization and soldering problems.
On the contrary, under the same total power, the low-power chip not only has a higher lumen count, but also because the heat source is dispersed on each chip, it is less likely to generate hot spots. Therefore, purely in terms of light and heat, the low-power polycrystalline package has the upper hand.
Of course, related manufacturers are still constantly working to improve the lumens of LED lighting. Edison Optoelectronics has launched a customized polycrystalline package high-voltage LED products, the main LED bulb market, the best luminous efficiency of the product can reach 120 lumens per watt, the new products have been successfully shipped in the near future. Wu Jianrong, chairman of Edison, said that in addition to focusing on the lighting market, high-voltage LEDs can effectively reduce product costs, which is also the main consideration for future Edison product development.
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