| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a wiring board which is capable of effectively preventing fractures from occurring in a low-melting brazing material which bonds a connection pad of an insulating base to a circuit interconnecting wiring of an external electric circuit board, and electrically connecting the electrodes of a semiconductor element or the like mounted on a wiring board to an external electric circuit securely and firmly for a long period of time. <P>SOLUTION: The wiring board is composed of an insulating base 1 which is formed of electric insulating material and equipped with a semiconductor element mounting part 1a on its surface, a large number of connection pads 6 formed on the undersurface of the insulating base 1, and a plurality of wiring conductors 2 which are derived from the mounting part 1a extending to the connection pads 6. The connection pads 6 are each composed of a main connection part 6a which is formed on each bottom center of a large number of recesses 7 formed on the undersurface of the insulating base 1, and an auxiliary connection part 6b formed on the internal surface of the recess 7. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
