Green Lighting LED Applications Introduced

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LED light-emitting principle: light-emitting diode LED (Light Emitting Diode) is a combination of electronic and voids within the process of energy conversion output diodes produce light.

LED Features: Cold does not produce heat-emitting element long life (more than one hundred thousand hours), fast response, small size, low power consumption, suitable for mass production, high reliability.

LED is usually made of arsenic, phosphorus, gallium …-…¤ group elements, including upstream production process of wafer production, epitaxial growth, the middle of the diffusion process, metal deposition, grain production, and product packaging and application downstream markets.

Second, the market overview:

LED can be divided into visible light (450 ~ 780nm) and invisible light, the brightness in the visible part of the traditional products are mature products, the output is great, but the value is not high due to low prices, the annual compound growth rate of only 10%; high-brightness LED is the current mainstream products, mainly used in large billboards, traffic signs, backlighting, automotive third brake light. More mature AlGaInP (red, orange, yellow) is widely used, the patent issue is not, the price is close to conventional brightness, huge areas of application. The most popular stage belongs GaInN (blue, green) products in recent years under the blue backlight wave of strong demand for mobile phones, the product could be overwhelmed. GaInN + phosphor (white) is mainly used in lighting, due to breakthroughs in global blue white lighting manufacturers have to invest in research and development, coupled with the recent popularity of full-color mobile phone, white backlight so hot, if future technology advances will gradually replace the general lighting market, has a huge opportunity.

In terms of non-visible light, mainly used in the infrared (850 ~ 950nm) and optical communications (850 ~ 1550nm) field, due to higher investment in this regard, technical difficulties, product prices and gross margins are better, the current market is the United States, Japan, Europe and other manufacturers eating situation.

According to Strategies Unlimited predicts that in 1998 the world's visible LED production value to $ 1.04 billion and 54.1% of the share of the highest; the second is Taiwan's $ 346 million, 18% of the market share, the United States 16.5%, $ 318 million, ranked third; in Europe there are $ 200 million value, and 10.4% share.

Three, LED application of LED applications is very wide, including communications, consumer electronics, automotive, lighting, lights, etc., can be roughly divided into five areas backlight, lighting, electronic equipment, displays, car and so on.

1, car parts: the use of a car interior, including the instrument panel, speakers and other indicators, and automotive exterior (third brake light, left taillights, turn signals, etc.), the current European series vehicles including Audi, BMW, Volkswagen, etc. brand full range of high-brightness LED, and a depot, and Toyota also lead to the dashboard into high brightness backlight LED, car depot each other, are also being adopted. When coupled with front and rear lights, brake lights, traffic signs and other traffic-related market opportunities are very large. Traffic lights in the market, there are around 20 million traffic lights, if the update 2 million per year, business opportunities can be extended to 10 years.

2, backlight parts: the main mobile phone backlighting, the largest market for SMD type of product applications. Although the past two years, mobile phones have slowed down the growth rate, but there are still 400 million annual level, with a mobile phone to be LED backlight 2, the key 6 SMD LED meter, a conservative year demand of about 400 million mobile phones 3.2 billion LED. The recent wave of South Korean mobile phone blue backlight, making the blue LED market demand, showing a mobile phone in the LED application market still occupies a pivotal position. Following the blue cell phone, currently has a color screen phone market in the world. Previous color phone is very high-end products, but this year the main components prices fell, making the color and monochrome phone handsets spreads narrowed, with heavy promotion manufacturers, mobile phone type of change the tide coming.

Also in the PDA, DSC two new products will also be entering the stage of full color, with considerable opportunities.

3, the display LED display screen as a new media, with the rapid development of large scale integrated circuits and computer technology has been rapid development, it is displayed with the traditional media - colorful neon, pixel tube TV wall, four color magnetic flap compared to its high brightness, dynamic image display effect, failure is low, low energy consumption, long service life, display diverse, rich display, high cost performance advantages, has been widely used in various industries.

4, electronic equipment and lighting

LED with its low power consumption, small size, long life, has become the preferred indicator of a variety of electronic devices, almost all electronic devices have LED figure.

LED lighting has evolved to the preliminary stage of commercialization, only on the life and the price is still room for improvement. According to the manufacturer predicted, the fastest in 2004, the white LED luminous efficiency can be achieved with the same 20W fluorescent tubes 60lm / W, and up to 100 lm / W in 2010, enough to replace 40W fluorescent tubes. As will be priced from around 100 yen each tablet to reduce the annual rate of 20% down. The rapid decline in the price of making white LED application surface quickly grew, but the most promising future or incandescent light bulbs can replace incandescent and fluorescent white LED.
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