White light power LED market and application development analysis

The development of high power LED lighting has been applied as the main target, although LED is considered to enter the field of general lighting is still a certain threshold, but with the rapid development of landscape lighting, LCD backlight application and lamp, lamp etc. function of lighting applications, high power white LED is still in the expansion of technical indicators of the evaluation and application of the scale keep the development speed very fast. LED industry is expected to remain at around 15% of the pace of development in the next few years, the development of high-power LED is expected to remain at more than 50%.

With the expansion of the application fields and market scale, the development of high power LED are gradually changing, showing some new characteristics of the industry, the development of high power LED in recent years are summarized, the tentative incomplete analysis.

Domestic market mainstream products still rely on imports

At present a lot of high power LED brand in the domestic market sales, quality is uneven, general CREE and Lumileds products is still high order products, and Cree products for complete product line, the delivery period is stable and become the mainstream of high-end products.

Taiwan products occupy a large power LED mainland market quite a large proportion. In addition, such as Edison, Baihong Dachang advanced products, research, crystal Wei Tiandeng second tier manufacturers are also selling products. Due to the high cost of products in Taiwan, so the majority of high school products accounted for.

Many domestic enterprises in packaging technology can be par with the world's largest manufacturers, the use of imported chip packaging high-power LED has a great comparative advantage, the price is also gradually par with the Taiwan products. However, the use of domestic chip packaging high-power LED is still mainly concentrated in the low-end market, the domestic power chip is still a major obstacle to improve domestic high-power LED.

Mainstream products LED price decline gradually reduced

At present, the production of Cree flux 70-90ml 1W white LED products market price remained at 17 yuan, the same type of Lumileds product prices in the 19-21 yuan, Taiwan 1W white LED (70-80ml flux) price from 10 yuan to 15 yuan range, the domestic production of high-power LED chip package with import prices in line with Taiwan products, high-power LED complete domestic production (50-60ml) in the basic price of 5.50 yuan.

Since 2003, the application of high-power LED gradually pushed forward, the price will be significantly reduced. To power 1W white LED to contrast, in 2003 a single price of $5-6, down to $2-3 in 2007, while the light efficiency increased from 30lm/W to 70-80lm/W in 2007. But compared to 2007 to now the 1W white LED single price, is still maintained at 2-3 U.S. dollars, the difference is to enhance the light efficiency of 80-90lm/W.

The ability to supply large quantities of white LED power chip and LED device manufacturers are still confined to the Lumileds, Cree, OSRAM, Nichia and Taiwan crystal power is one of the few manufacturers, along with the rapid growth of power white LED application and light effect of continuous improvement, is expected to the single LED price will not be too large. Drop.

Cost is still the biggest obstacle to replace traditional lighting LED

Lighting is the most attractive application area of LED, and the cost is very important for LED to replace traditional lighting. Although the price of LED relative to its life expectancy is not high enough to traditional lamps, and can save the cost of replacement and maintenance of late use, but the initial cost is often subject to the purchase budget. PHILPS believes that the main bottleneck affecting the current application of LED is 10 times higher than the cost of traditional light source lumens. Therefore, to improve the efficiency of light to 150 lm/W, drive current increased from mA to 2A, while the core and packaging costs to be reduced by half, in order to large-scale application in the field of lighting in the world of the 700.

New demand for high power LED lighting

With the deepening of the LED application, there are many new requirements for the high-power LED, only to meet these new requirements, LED lighting applications can really achieve a major breakthrough.

Some modular

Through the interconnection of multiple LED lamps (or modules), a good lumen output can be achieved to meet the requirements of high brightness illumination. Through the modular technology, the multi point light source or LED module can be combined according to the random shape to meet the lighting requirements in different fields.

To maximize the efficiency of the system

Do not simply emphasize some of the LED hard indicators, such as brightness, life, etc., and should highlight its function in practical applications. In order to improve the light efficiency of LED lamps, in addition to the appropriate LED power supply, it is necessary to use efficient cooling structure and process, and optimize the internal / external optical design to improve the efficiency of the whole system.

It is easy to replace and maintain

Because of the long life and low maintenance cost of LED light source, it is necessary to set up the reliability of LED lamps. LED lighting design requirements are easy to improve to meet the future requirements of higher efficiency LED chip packaging requirements, and require LED chip interchangeability is better.

To pay more attention to the performance of color, color, life and stability.

To evaluate a light source, it is necessary to make a comparative analysis of the following characteristics: power, light efficiency, light characteristics, price and so on. In the early stages of the development of LED, people are more concerned about the improvement of the efficiency of high power LED light and the decline in prices, the production of enterprise product development is also mainly around these two indicators for research and development and advocacy. With the commercial power LED in the luminous efficiency is far more than incandescent lamps, but also more than ordinary fluorescent lamps, compact fluorescent light effect, the price fell to a relatively acceptable