Electronic circuit connection structure and its manufacturing method

An electronic circuit connection structure comprising:

• a first wiring substrate including a first connection terminal region formed at a constant pitch on a first base material;
• a second wiring substrate including a second connection terminal region formed at a pitch same as the first connection terminal on a second base material;
• and
• a sheet-like substrate for electrically connecting the first connection terminal region of the first wiring substrate and the second connection terminal region of the second wiring substrate;
• wherein
• the sheet-like substrate includes,
• a sheet-like base material which surface is at least insulative,
• a plurality of wiring conductors, formed on the sheet-like base material, for connecting connection terminals of the two wiring substrates, and
• a capacitor element formed on the sheet-like base material and configured by a lower layer electrode layer, a dielectric layer, and an upper layer electrode layer;
• and
• a wiring conductor set in advance of the wiring conductors is electrically connected to the lower layer electrode layer or the upper layer electrode layer of the capacitor element, and the upper layer electrode layer or the lower layer electrode layer of the capacitor element is connected to a ground conductor of the wiring conductors.

An electronic circuit connection structure comprising:

• a first wiring substrate including a first connection terminal region formed at a constant pitch on a first base material;
• a second wiring substrate including a second connection terminal region formed at a pitch same as the first connection terminal on a second base material;
• and
• a sheet-like substrate for electrically connecting the first connection terminal region of the first wiring substrate and the second connection terminal region of the second wiring substrate;
• wherein
• the sheet-like substrate includes,
• a sheet-like base material made of material formed by mixing inorganic dielectric material to an insulating resin,
• a plurality of wiring conductors, formed on one surface of the sheet-like base material, for connecting the first connection terminal region of the first wiring substrate and the second connection terminal region of the second wiring substrate, and
• a ground wiring conductor formed at a position facing the wiring conductor on the other face of the sheet-like base material;
• and
• the wiring conductor, the sheet-like base material and the ground wiring conductor configure a capacitor element, the ground wiring conductor being connected to a ground conductor formed on a surface formed with the wiring conductor by a penetrating conductor arranged at the sheet-like base material.

A method for manufacturing an electronic circuit connection structure;

• comprising:
• forming a first sheet-like substrate having a shape at least smaller than a region surrounded by first terminals arranged on both sides of a male connector and being arranged with a first passive element at a position corresponding to the first terminal;
• forming a first circuit substrate including a connection terminal at a position corresponding to the first terminal of the male connector and an electrode terminal of the first passive element of the first sheet-like substrate;
• forming a second sheet-like substrate having a shape at least smaller than a region surrounded by second terminals arranged on both sides of a female connector and being arranged with a second passive element at a position corresponding to the second terminal;
• forming a second circuit substrate including a connection terminal at position corresponding to the second terminal of the female connector and an electrode terminal of the second passive element of the second sheet-like substrate;
• aligning and connecting the connection terminal of the first circuit substrate, and the electrode terminal of the first passive element and the first terminal of the male connector;
• aligning and connecting the connection terminal of the second circuit substrate, and the electrode terminal of the second passive element and the second terminal of the female connector;
• and
• configuring a filter circuit with the first passive element and the second passive element by engaging the male connector and the female connector.