| 摘要 |
PROBLEM TO BE SOLVED: To prevent shortage of bonding strength, failure of bond mounting, or the like caused by spreading a silver paste resin at a die pad part for fixing a semiconductor chip or other electronic component elements onto a printed- wiring board at unnecessary parts, such as a bonding pad part for electrically connecting the electronic component elements, and to provide the high-density packaging of the electronic component elements. SOLUTION: After a circuit conductor, including a metallic die pad part for mounting the electronic component elements, is formed on an insulating substrate, a groove part is provided between the die and bonding pad parts by laser machining, thus achieving groove machining even between the adjacent pad parts, and hence providing the printed-wiring board where the electronic component elements can be mounted adjacently. |
