| 摘要 |
<p>PROBLEM TO BE SOLVED: To simplify a process for dicing each unit from a multiple pattern circuit board by forming slit holes in each unit circuit beforehand, and making the length of the slit hole longer than the end surface length of the individual unit circuit board after dividing. SOLUTION: A plurality of slits 2 are discontinuously formed in a circuit board, corresponding to each unit circuit board D to be divided individually. The slit is longer than the end surface length (a) of each unit circuit board D in the P-direction. The width between slits 2 in the Q-direction is made nearly equal to the end surface width (b) of the unit circuit board D. A plurality of through-holes 3 are continuously formed in the Q-direction. The through-holes 3 have function of connecting circuit wirings on the surface and the back of the circuit board 1, and function as side surface outer electrodes at the time of product completion. Thereby the process for dicing each unit circuit board D from a multiple pattern circuit board 1 can be simplified.</p> |
