Patent ID: 7219422
Filing Date: 2007-05-22
Classification: G01R,Y10T

Abstract:
1. A fabrication method of a semiconductor integrated circuit device, comprising the steps of: (a) preparing a semiconductor wafer which has been divided into a plurality chip regions each having a semiconductor integrated circuit formed thereover, and has, formed over a main surface of the wafer, a plurality of first electrodes to be electrically connected with the semiconductor integrated circuit; (b) preparing a first card for retaining a first sheet, which has a plurality of contact terminals to be brought into contact with the first electrodes and interconnects to be electrically connected with the contact terminals, so as to cause tip portions of the contact terminals to protrude toward the main surface of the semiconductor wafer; and (c) bringing the contact terminals into contact with the first electrodes to perform an electrical test of the semiconductor integrated circuit device, wherein the tip portions of the contact terminals are disposed over a first surface of the first sheet, and a plurality of second electrodes to be electrically connected with interconnects are disposed over a second surface which is opposite to the first surface of the first sheet, wherein the first card has a plurality of connection mechanisms to be electrically connected to the second electrodes and pushing mechanisms for pushing the contact terminals toward the first electrodes, wherein the connection mechanisms each comprises: an elastic contact needle for pushing the second electrodes by a load generated upon contact of the contact terminals with the first electrodes; and a retainer member for retaining the contact needle and is disposed to get in touch with the second electrodes over the second surface of the first sheet, wherein each of the pushing mechanisms is formed by successively stacking a first elastic material, a pushing member and a second elastic material one after another from the side of the first sheet and is disposed above the contact terminals over the second surface of the first sheet, and wherein any one of the pushing mechanisms pushes at least one of the contact terminals.