China's major technological breakthroughs or rewrite the international LED chip industry competitive landscape

Shanghai blue after years of research and development, recently made a major breakthrough in medium composite substrate. Through the combination of technology of buffer layer and the dielectric substrate, the parameters reach or exceed PSS sapphire substrate scheme is optimal, can completely replace the expensive sapphire substrate PSS program at present, and can break through the two major basic PSS substrate current and two step growth method patent blockade.

From the beginning of 2006, Japan's Nichia chemical synthesis (Nichia), TOYOTA (Toyoda Gosei), CREE, PHILPS (Philips Lumileds) and Germany's OSRAM (OSRAM) big five and South Korea's Samsung, LG, Taiwan EPISTAR, billion light and other enterprises patent litigation continued, such as Nichia and billion the light of the patent litigation has not stopped since 2006. At the same time, they formed a group advantage through patent licensing and cross licensing, which formed a higher threshold for the subsequent entrants. This is in addition to February 2008 and two, the "337 survey" involving mainland enterprises, other litigation in the mainland enterprises are not yet involved in the. With the rapid expansion of capacity, and constantly enhance the competitiveness of products, the mainland enterprise patent litigation although some domestic enterprises triggered at any moment, through the acquisition of shares or foreign enterprises or Taiwan, but in fact did not grasp the decisive role of the core basic patent, the patent protection of existing products is fragile. PSS substrate patents and two step growth method patents are currently very important basic patent patent LED, in the hands of Nichia and other international manufacturers in. At present, the MOCVD population has reached more than 40% of the world, but the GaN based LED all use two step growth method, white LED all used PSS substrate, domestic LED chip has the risk of patent infringement.

The breakthrough of the technology, will greatly promote the rapid development of the domestic LED epitaxial chip original innovation technology and industry, it is possible to rewrite the current international LED chip industry competition pattern.