Why do we need to polish the wafer so smoothly?The final fate of the wafer is to be cut into chips (die), packaged in a dark box, with only a few pins exposed. The chip will look at the threshold, resistance, current value, and voltage value, but no one cares about its appearance. In the process, we Read More

Patterned sapphire substrate (PSS), that is, a mask for dry etching grown on a sapphire substrate. The mask is patterned by a standard photolithography process, and the sapphire is etched using ICP etching technology. The mask is removed, and the GaN material grown on it turns the preliminary epitax Read More

What is Third-generation semiconductor materialsThis is determined by the material. Semiconductor materials are important materials for making transistors, integrated circuits, power electronic devices, and optoelectronic devices.Its development has gone through three stages: The first-generation ma Read More

You may feel unfamiliar when it comes to sapphire windows, but you must be familiar with the fields in which it is applied. Its application is very wide: in addition to some optical laboratory equipment or detection and other technological equipment, it is also used in all aspects of our daily life, Read More