GT Advanced Technologies is to host a LED manufacturing symposium in Shanghai, China, May 9-10, 2012.

The event will bring together a wide range of manufacturers from the LED value chain throughout Asia, from sapphire crystal growers to epi-wafer and LED device producers, to discuss the metrics that matter most in producing high yielding and high quality LEDs.

Particular focus will be on the role that high quality sapphire material plays in driving downstream yield improvements and costs reductions. Presenters include representatives from Philips Lumileds, Arima Optoelectronics, Yole Developpement, KLA Tencor, Meyer Berger and GT.

GT also released its latest sapphire material characterization case study that examined the critical properties and quality indicators of sapphire material -- the "Metrics that Matter" -- that have the greatest impact on yields and costs in manufacturing HB-LEDs.