Cover opening method of rigid and flexible plate

The invention discloses a cover opening method of a rigid and flexible plate. The cover opening method of the rigid and flexible plate includes the following steps of chemical pretreatment-filming-exposure-development-etching-stripping-copper deposition + flash plating. The chemical cover opening method is different from an existing laser cover opening method, can prevent a covering film and a flexible plate at a joint area of the flexible plate and a rigid plate from being cut, and improves product quality. Furthermore, the chemical cover opening method does not need to adopt a laser cutting machine so as to save machine cost greatly, and simultaneously replaces existing polyimide (PI) with copper foil so as to reduce plate thickness and greatly save material cost.