Semiconductor refers to the material with conductivity between conductor and insulator at room temperature. Semiconductors are widely used in mobile phones, automobiles, military industry, aerospace and so on.
Semiconductor pre-processing is very complex, mainly including circuit design, coating, corrosion, slicing, placement, packaging, testing and so on. Semiconductors are mainly used in LED, MEMS, electroacoustic, PCBA and other industries. The dispensing process includes: chip fixation - red glue, electrical connection fixation - silver paste, fixed MEMS devices - silica gel, cob packaging protection - epoxy adhesive, chip solder ball protection (underfill) - epoxy adhesive, etc. Glue plays an important role in packaging, and there are many ways of dispensing, including time pressure type, screw type, plunger type, spray type, piezoelectric type, etc.