As the world's most high-profile new generation of light source, led because of its high brightness, low calorie, short-lived, non-toxic, recyclable and other advantages, is known as the 21st century the most promising green lighting source.
Since 1962, the first red light semiconductor light-emitting Diode was born, people continue to develop a variety of orange, yellow, green and other monochrome led, and for a variety of signal indicators, logos, digital display, and gradually developed to small LED display. It uses the solid semiconductor chip as the luminescent material, when emits the excess energy, causes the photon emission, produces may use the semiconductor PN knot light source to produce the LED, was published in the early 1960s, 1964 Red Light-emitting Diode first developed successfully, the yellow led appears with it.
The world's first commercial light-emitting diode (LED) was made in 1965 with germanium material, its unit price of 45 U.S. dollars. Soon after, Monsanto and Hewlett-Packard Company launched the use of gaasp materials made of commercial led. This is much lower than the average 60~100w incandescent 151m. 1991 the industry adopted MOCVD epitaxial growth of four-element materials, the development of high-brightness light-emitting diodes; In 1994, the first Blue light-emitting diode was developed on Gan substrate; 1997 through the Blu-ray excitation fluorescent powder, make the first white light LED In 2001, ultraviolet light was used to excite phosphor to make white LED.
First, the global industrial pattern shows monopoly situation, mainly concentrated in Japan and Taiwan region.
The semiconductor lighting industry has formed a pillars industry distribution and competition pattern which is dominated by Asia, America and Europe. The global LED industry mainly distributes in Japan, Taiwan two big regions, in which Japan occupies the global led output value nearly 50%, Taiwan (including Taiwan Island and the mainland factory production) the LED output value 2 occupies the global led output value 21% row second.
Second, the international manufacturers leading the industry development, the use of technical advantages to occupy high value-added products production.
Enterprises in Japan and the United States take advantage of their innovative advantages in new products and new technologies, mainly in the production of the highest value-added products. Japan almost monopolized the global high-end blue, green LED market, the world's second largest packaging production, the production value of the first large area.
Third, the industry investment continues to increase, international well-known manufacturers to accelerate the pace of cooperation to occupy a favorable market position.
Four, China has become an important packaging base, enterprises at home and abroad have invested to seize the domestic huge market.