Patent ID: 7064423
Filing Date: 2006-06-20
Classification: G06K,H01L

Abstract:
1. An IC module, comprising: an IC chip provided on one surface of a substrate; and a terminal group, including a plurality of terminals adjacent to each other, provided on a back surface of the substrate including the IC chip, one of the terminals being a ground terminal and other terminals including a plurality of external connection terminals electrically connected to the IC chip, wherein: the ground terminal is disposed adjacent to each of the other terminals, provided on the back surface of the surface having the IC chip, so as to have a constant gap between the ground terminal and each of the other terminals, and the other terminals provided on the back surface of the surface having the IC chip include curved convex faces, and the ground terminal includes curved concave faces, each of which is a counter face positioned opposite to each of the curved convex faces of the other terminals so that there is the constant gap between the curved convex face and each of the curved concave faces, and the gap between the ground terminal and each of the other terminals is narrower than a gap between all the other terminals, other than the ground terminal, provided on the back surface of the substrate including the IC chip, wherein the gap between the ground terminal and each of the other terminals provided on the back surface of the substrate is not less than 50 μm and not more than 150 μm, and the gap between the other terminals is not less than 200 μm and not more than 540 μm.