Several Difficulties Encountered In Popularity Market Of Led Light

By Author: Rihey
Total Articles: 115
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LED lights want to replace the general energy saving light bulbs, the luminous flux of LED lights must meet up 1000Lm, LED's costs must be reduced to 1 dollar per thousand lumens (USD $ 1/Klm) may be possible to universal access. Because the conventional indoor lighting with the brightness below 1000Lm of the current average household have the proportion of up to 65%, if the single LED bulb can achieve 1000Lm that can cope with most indoor lighting needs.

LED's costs must be reduced to 1 dollarper thousand lumens (USD $ 1/Klm). But compare to the current cost of traditional lamps, incandescent is $ 0.3 Klm, Fluorescent is $ 0.6/Klm, energy-saving lamp is $ 2-3/Klm, while LED is $ 15-20/Klm. Obviously LED cost is a lot of higher than traditional lamp, so at this stage, LED light replaces the interior energy saving lamps is still difficult.

First, at this stage, luminous efficiency of white LED bulb which produced by blue LED plus phosphor packages is only 11% (2007), while luminous efficiency of white LED packaged by R, G, B three-color LED is about 9% (2007). However, if the manufacturers can improve the efficiency ...
... in each LED manufacturing process, the luminous efficiency will have 4 times inceasing space in 2015.

Second, there are the following several tests need to overcome in the package stages that is possible to reach these goals:

1. The higher the reliability of high power LED package, the more expensive of raw material relatively, difficult to make the cost down.

2. Packaging technology of high-power LED is very complex (wholesale LED lights), artificial gravity is higher, is not easy to reduce the costs in using mass production.

3. Warm white light and high color rendering issues. High softness will reduce the light efficiency.

4. Light color consistency, and how to achieve consistency of the light is very difficult, a high cost.

5. Multi-chip package caused yield decline and is not easy to achieve light consistency.

6.LED should meet the quality requirements of consumers.from: led bulb light