| 摘要 |
An automatic design method according to the present invention comprises the steps of: grouping rats and tentatively disposed vias by bonding pad groups to be connected, corresponding to the pads that are grouped by four sides of a substrate surface; setting boundary lines to define regions each of which contains any one of the pads and the tentatively disposed vias; checking whether there exist(s) the tentatively disposed via(s) surrounded by bonding pad group(s) that is/are different from the one to which the via(s) in question belong(s) or not; and in a predetermined case, moving and redisposing the tentatively disposed via(s) on respective position(s) each of which is located on a rat to which it is connected and on the boundary line that defines a plurality of adjacent regions containing other vias in the bonding pad group to which the via in question belongs.
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