Soft and hard combined board
Because the soft and hard bonded plate is composed of several different materials laminated together, due to the inconsistency of its thermal expansion coefficient, the hole wall and the line connection between layers are prone to fracture and tear phenomenon, improve the reliability of the soft and hard bonded plate hole metallization and the bonding force between the line lamination, is the key technology of the soft and hard bonded plate quality.
The traditional process uses chemical potions wet process, the characteristics of the potions are not strong acid or strong alkaline, which will be adverse to polyimide resin, acrylic resin and so on. The dry treatment technology using plasma to clean, coarser and activate the material surface can not only obtain good reliability and binding force, but also overcome the defects of the traditional process and realize the green environmental protection process without emission.