For [emach1ne], the DIY LED was part of a Master’s degree course and began with a slice of epitaxial wafer that goes through cleaning, annealing, and acid etching steps in preparation for ...

incoming quality control at HB-LED chip fabs, and final inspection of sapphire substrates. The UltraMap C200 offers throughput of ninety 6” diameter sapphire wafers per hour with lowest cost of ...

These developments have led wafer companies to raise their operating rates since early January, with the overall average now exceeding 50%. As a result, January wafer output is expected to reach ...

Using the feedback system, the team demonstrated a DUV micro-LED array with a high pixel density of 564 pixels-per-inch (PPI) ...

LED manufacturers, for instance, like to use sapphire wafers as the substrates for their devices. “For an optically clear, hard substance, it makes sense to use a short wavelength to scribe it ...