Patent ID: 7658618

Claim:
An electric connector comprising a plurality of cantilever connecting elements each of said cantilever elements having different contact lengths extending outward from a support electrically connecting a first electrode group and a second electrode group which are opposite each other between two devices, wherein: (a) first contact points of the connecting elements in contact with an electrode of the first electrode group correspond to intersection points on an a×b grid where a and b correspond to pitch size, (b) second contact points of the connecting elements in contact with an electrode of the second electrode group form at least two groups, and in two adjoining groups, while the respective connecting elements are arrayed opposite each other to the other group, the second contact points of the connecting elements which are arrayed directly opposite each other along the array direction of the connecting elements are arrayed at intervals of distance expressed by the following expression (1) (2c+1)√(a 2 +(nb) 2 ), (1) where n is an integer of 0 or more, c is the ratio of a difference of the distance between the first contact point and the second contact point of the connecting element, to the distance between the first contact points (contact-to-contact pitch) along the array direction of the connecting element, and (c) a boundary line dividing the two groups is at an angle θ expressed by the following expression (2), with respect to any of the grid lines composing the grid tan θ= nb/a (2) (where, n is an integer of 0 or more).