High voltage LEDs(HV LEDs) are a rising star in the LED family. The working conditions of VF high voltage and IF small current completely subverted the working requirements of VF low voltage and IF large current of traditional LV LEDs. LED lighting lamps are likely to reduce their heating due to the SOC module of HV LEDs. The structural modeling of LED lamps is likely to be more oriented towards saving heat dissipation materials, luminescence of more than 270 degrees, low cost and reduced weight. Despite such advantages, will HV LEDs win out in the massive domestic lighting market? The market will see in 2012.

LEDs are on-chip systems (SOC) or modules made directly on a silicon wafer during chip production, which is a revolutionary advance in LED chip manufacturing technology. A 2 inches on the silicon wafer, a can produce thousands of LED tube core, but the use of the technique and technology of the general to the production, each LED parameter discreteness is very big, so after production manufacturers need to step one by one test parameters, the customer can only take the adjacent three gears in a unit (lamp), to assure that the light color consistency. In the production of HV LEDs, the new generation of technology and advanced processing technology are used to make the parameters of tens of thousands of LED tube cores on the same silicon wafer completely consistent, so that they can be conveniently located near the HV LEDs composing SOC during the chip production. For example, there are 16 LEDs on HV45, and all their electrical parameters are exactly the same (Figure 1). Such HV LEDs users can control the cost. There is another KIND of COB HV LED, which is a large LED core with discrete parameters produced by the aforementioned general technology. After testing data, the same parameters are configured together and recombined into a light source body. Since it is necessary to test, pair, screen and combine one by one, and there are many unmatched pairs with scattered parameters, it should be said that the production cost will be high.

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