MULTI-LAYER PRINTED CIRCUIT BOARD

摘要

A multi-layer printed circuit board is provided to obtain the thin form and high intensity by heterogeneously forming the insulating layer for insulation function. The metallic pattern layer(10) is formed in one side or both sides of the insulating layer. The insulating layer is made of two different materials. The part of insulating layer(20) is made of the resin including glass fiber. The rest of insulating layer(30) is made of resin including carbon fiber, graphite fiber or their mixture. The rest insulating layer is made of multi-layers.