1. Laminated structure
2. Production process
Flexible board cutting → drilling → circuit etching → AOI scanning → pressing cover film → pressing → drilling → sinking copper plate electricity → outer circuit etching (alkaline etching) → AOI scanning → solder mask characters → sinking gold → opening Cover forming → mechanical depth control → electrical measurement → rigid board forming → flexible board forming → FQC → packaging
3. Manufacturing difficulties
4. Application areas
This rigid-flex board is a 3-layer battery protection board. The copper thickness of the soft board is 1oz, which can effectively provide voltage protection and current protection for the lithium battery to prevent overcharging, over-discharging, and excessive current load.