Patent ID: 7833036
Filing Date: 2010-11-16
Classification: G01R

Abstract:
1. An electrical connecting apparatus for connecting electrodes of a device under test to an electric circuit of a tester, comprising: an electrically insulating plate-like base member for receiving said device under test and having a top face, a bottom face and a plurality of slots penetrating through the base member between the top face and the bottom face; contacts disposed within said slots so as to contact said electrodes of said device under test positioned on said base member and for connecting said electrodes to the electric circuit of said tester; and an elastic member; wherein each contact includes: a fixed piece mounted on said base member within said slot for connection with said electric circuit; and a movable piece disposed within and extending out of the top surface of said slot and electrically contacting said fixed piece, said fixed piece having a guide face arranged for guiding said movable piece toward a contact position in which said movable piece is positioned for contacting an electrode of said device under test while still maintaining electrical contact with the fixed piece; and wherein said movable piece is supported by said elastic member and slidably positioned on said guide face so as to receive elastic biasing force of said elastic member toward said contact position; and further wherein said fixed piece has a substantially flat bottom surface to conform to said bottom face of said base member within the slot so as to provide a constant connection with said electric circuit without extending out of the bottom surface of the base member.