OSRAM develops high performance blue and white LED prototype chip

The German OSRAM Opto Semiconductors R&D staff produced a high-performance blue-and-white LED prototype chip, which was placed on a 150 mm diameter wafer substrate. This is the first time that a silicon wafer has been successfully fabricated using a silicon wafer substrate instead of a sapphire substrate to maintain the same illumination quality and efficiency.

At present, the LED chip has entered the pilot stage and is tested under actual conditions. OSRAM said that the first batch of silicon wafer chips is expected to be launched within two years.

矽 Wafer substrate chips have significant advantages over traditional material chips.矽In the semiconductor industry, it can be used in a wide range of wafer diameter production requirements, while 矽 materials have better thermal characteristics and lower prices, so 矽 wafer substrate chips will become more attractive in the future LED lighting market. The choice of price advantage.

In addition, the technical specifications of the new high-performance blue and white LED can also be compared with the traditional sapphire substrate. The tested blue UX:3 chip has a brightness of 634 mW at 3.15V, which is equivalent to 58%. The conversion efficiency is a relatively good value obtained by LED illumination at a current of 350 milliamps per square millimeter.

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