Liquid Photoresist (PCB)

Liquid Photoresist (PCB) is a UV-sensitive polymer-based coating formulated with photoactive components that undergo controlled crosslinking or solubility change upon exposure, enabling accurate circuit pattern definition on copper-clad laminates. It is widely used in the fabrication of printed circuit boards, including single-sided, double-sided, and multilayer designs, as well as flexible circuits and HDI applications. Key performance attributes include uniform coating behavior, strong adhesion to copper, excellent resolution, chemical resistance during etching or plating, and clean stripping. Typical downstream users include PCB manufacturers, electronics OEMs, and suppliers serving consumer electronics, automotive, telecommunications, and industrial control sectors.