The substrate electroplating process consists of three stages: desmear, chemical electroplating, and electroplating. In this session, we will focus on the first stage, the desmear process. Desmear: The process of removing smear generated during laser processing to clean the holes. Smear is composed of polymer resin residues and carbides formed due to the heat generated during drilling (CNC or La..

CO2 Laser Process A processing step within the package substrate process for implementing via holes. The layer-to-layer connection via holes are formed by controlling the beam power of the laser equipment. CO2 Laser Equipment Setup CO2 Laser equipment is divided into an oscillator, optical path, and processing unit. Galvano Mirror Configuration Galvano consists of mirrors and F-theta lenses. Gal..