| 摘要 |
PROBLEM TO BE SOLVED: To provide a wiring board capable of obtaining a package for housing an electronic part inhibiting the occurrence of a crack in a wiring-board region, and having an excellent reliability, and to provide a multiple patterning wiring board. SOLUTION: The wiring board has the wiring-board region 102 formed at the central section of a mother board 101, an outer-peripheral region 103 placed outside the wiring-board region 102 and a division predetermined line 104 formed between the wiring-board region 102 and the outer-peripheral region 103. The wiring board further has one main-surface side dummy trench 105 and the other main-surface side dummy trench 105 formed to each of one main surface, and the other main surface of the mother board 101 along the division predetermined line 104 in the outer-peripheral region 103. COPYRIGHT: (C)2008,JPO&INPIT
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