Patent attributes
An anisotropic conductivity sheet (10) comprising an insulating sheet (11) having a number of through-holes (12) and a number of conductive bodies is provided. The insulating sheet (11) has an inner layer (11A) of a heat resistant fuloro-elastomer and surface thin layers (11B, 11C) of heat-resistant engineering plastics. Each of the conductive bodies is a wire loop (13) formed to generally elliptic shape. They are arranged within each of the through-holes (12) so that long axis of each wire loop (13) extends in the thickness direction of the insulating sheet (11). The anisotropic conductivity sheet (10) is suitable to use for electrical test of a semiconductor devise (16), such as IC. A signal waveform-rectifying sheet (20) is preferably arranged on the anisotropic conductivity sheet (10). The signal waveform-rectifying sheet (20) has though-holes (22) in which electrical components for rectifying signals and currents, such as resistors (23A), LEDs (23B), LR circuits (23C) and capacitors (23D), are filled up.
