The patterned sapphire substrate (PSS) is used to produce a pattern with micron-level microstructures on the surface of a sapphire flat wafer substrate, and the LED epitaxial layer is grown to improve the defects of the sapphire LED substrate. And significantly improve the final light output efficiency of the LED.
Technical characteristics and advantages:
Processing advantages from cold working to graphic full process
Mass production capacity
GaN-based light-emitting diode