1, LED basic introduction

LED light-emitting principle: light-emitting diode LED (Light Emitting Diode) is the use of diodes? Magpie loving Governor Min Woo-oxime-impaired blind? Process of energy conversion to produce light output.

LED features: cold light does not produce heat, components, long life (one hundred thousand hours or more), fast response, small size, power consumption, suitable for mass production, high-availability * degrees.

LED production of materials is usually arsenic, phosphorus, gallium, etc. Ⅲ - Ⅴ group elements, the production process, including the upstream processes of production, epitaxial growth, the proliferation of mid-stream process, metal deposition, grain production, as well as the downstream product packaging and application of market.

Second, the market takes? R:

LED can be divided into visible light (450 ~ 780nm) and non-visible light, light in the visible part of the traditional products is a 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, primarily used in large-scale billboards, traffic signs, backlight, automobile third brake light. The more mature AlGaInP (red, orange,? S light) are widely used, the patent is not an issue with the traditional brightness prices close to a huge field of applications. Present, the most popular is a GaInN (blue, green) products in recent years, the blue backlight wave of strong demand for mobile phones, the product could not bear. GaInN + phosphor (white) are mainly used in lighting, on a breakthrough in the world because of Blu-ray makers have invested white lighting R & D, coupled with the recent popularity of full-color cell phone, so that hot white backlight, if future technology advances will gradually replace the the general lighting market with huge business opportunities.