As the world's most eye-catching new-generation light source, LED is known as the most promising green lighting source in the 21st century due to its advantages of high brightness, low heat, short-lived, non-toxic, recyclable and reusable.
Since the birth of the first red semiconductor light-emitting diode in 1962, people have continuously developed a variety of monochrome LEDs such as orange, yellow, and green, and used them for various signal indications, signs, and digital displays, and gradually developed to small LED displays, etc. . It uses solid semiconductor chips as luminescent materials, and when excess energy is released, it causes photon emission to produce LEDs that can be made of semiconductor PN junction light-emitting sources. It came out in the early 1960s. In 1964, red light-emitting diodes were first developed successfully. The LED appears.
The world's first commercial light-emitting diode (LED) was made of germanium in 1965, and its unit price was US$45. Soon afterwards, Monsanto and Hewlett-Packard have successively launched commercial LEDs made of GaAsP materials. This is much lower than the 151m of a general 60-100W incandescent lamp. In 1991, the industry used MOCVD epitaxial growth of quaternary materials to develop high-brightness light-emitting diodes; in 1994, the first blue light-emitting diode was developed on a GaN substrate; 1997 In 2001, the first white LED was made by exciting the phosphor with blue light; in 2001, the white LED was made by exciting the phosphor with ultraviolet light.
1. The global industrial structure presents a monopoly, mainly concentrated in Japan and Taiwan.
The semiconductor lighting industry has formed a three-legged industry distribution and competition pattern dominated by the three major regions of Asia, the United States and Europe. The global LED industry is mainly distributed in Japan and Taiwan. Among them, Japan accounts for nearly 50% of the global LED output value; Taiwan (including Taiwan's island and mainland branch production) LED output value2 accounts for 21% of the global LED output value and ranks second.
2. Large international factories lead the development of the industry and take advantage of technological advantages to occupy the production of high value-added products.
Companies in Japan and the United States take advantage of their innovative advantages in new products and new technologies and are mainly engaged in the production of the highest value-added products. Among them, Japan almost monopolizes the global high-end blue and green LED market, making it the second largest production area and the largest production value in the world.
3. Industrial investment continues to increase, and cooperation between well-known international manufacturers has accelerated to occupy a favorable market position.
Fourth, my country has become an important packaging base, and domestic and foreign companies have invested to seize the huge domestic market.
