1. Laminated structure
2. Production process
Flexible board cutting → drilling → black hole VCP → etching → AOI → pressing and covering film → lamination → laser drilling → drilling → electroplating and filling hole → immersion copper and panel plating → outer layer etching (alkaline etching) → AOI → solder mask and character → immersion gold → open and routing → laser depth control → electrical test → rigid board routing → flexible board routing → FQC → packaging
3. Manufacturing difficulties
Flexible board electroplating, laser drilling, electroplating hole filling, and cover sheet molding design by resisting glue.
4. Application areas
This rigid flex board is used in medical helmets. The flexible board has a ladder structure.
