PRINTED CIRCUIT BOARD AND THE METHOD OF MANUFACTURING THEREOF

摘要

PURPOSE: A printed circuit board and a manufacturing method thereof are provided to form a sol-gel layer between circuit wires of a circuit layer, thereby preventing electrical disconnection. CONSTITUTION: A metal substrate(10) is prepared. An anode oxidizing layer(20) is formed by anodizing the frontal surface of the metal substrate. The anode oxidizing layer is formed on circuit layers(30,31). A photo catalyst is coated between circuit wires of the circuit layers which expose the anode oxidizing layer and the photo catalyst is hardened to form a first sol-gel layer(50).