Development and Classification of IC

An overview is presented to describe the development of IC products at various stages, which include the mainframe, PC and Internet, mobile communication, and Internet-of-Things (IoT) eras. Various types of IC products were developed which closely follow the trends in these eras; the technology and functions of IC products are continuously enhanced. The IC products are thus classified, based on materials, into the Ge-Si process, compound process, and other processes. The functions of IC products can be classified into digital, analog-mixed signals, RF, power devices, and others.