Patent ID: 7042069
Filing Date: 2006-05-09
Classification: H01L

Abstract:
1. A semiconductor device comprising: a substrate on which is formed a plurality of leads; and a semiconductor chip having a plurality of electrodes, the leads and the electrodes being mounted on the substrate in a manner to face each other and to be electrically connected, wherein the plurality of leads includes a plurality of lead groups, each of which are formed of at least two first leads, and a plurality of second leads, wherein each of the second leads is positioned between an adjacent pair of the lead groups, wherein each of an outermost pair of the first leads of each of the lead groups includes a first portion at its end and a second portion extending from the first portion, the first portion of each of the outermost pair of the first leads being positioned at a first spacing apart and the second portion of each of the outermost pair of the first leads being positioned at a second spacing apart which is smaller than the first spacing, and wherein each of the second leads is not disposed in a region that is sandwiched between the first portion of the outermost pair of the first leads of the lead groups, and has a portion that is disposed in a region that is sandwiched between the second portion of the outermost pair of the first lead of the lead groups.