Electrical microfilament to circuit interface

A method of electrical interconnection of multiple microelectronic circuits, the method comprising:

• forming a first bundle of signal-carrying microfilaments and insulating microfilaments, each signal-carrying and insulating microfilament comprising a separate filamentary structure, wherein at least two of the microfilaments are signal-carrying microfilaments having an electrically-conductive portion extending along their lengths;
• bonding the at least two signal-carrying microfilaments of the first bundle of signal-carrying microfilaments and insulating microfilaments to a first microelectronic circuit substrate at corresponding bond pads to form electrical connections between the electrically-conductive portions of the at least two signal-carrying microfilaments and the corresponding bond pads;
• forming a second bundle of signal-carrying microfilaments and insulating microfilaments, each signal-carrying and insulating microfilament comprising a separate filamentary structure, wherein at least two of the microfilaments are signal-carrying microfilaments having an electrically-conductive portion extending along their lengths;
• bonding the at least two signal-carrying microfilaments of the second bundle of signal-carrying microfilaments and insulating microfilaments to a second microelectronic circuit substrate at corresponding bond pads to form electrical connections between the electrically-conductive portions of the at least two signal-carrying microfilaments and the corresponding bond pads;
• and
• connecting the first and second bundles of signal-carrying microfilaments and insulating microfilaments to each other through a common intervening connector formed at least in part from the first and second bundles of signal-carrying and insulating microfilaments, wherein the first and second microelectronic circuit substrates are electrically connected through the connector.