Electronic device and manufacturing method therefor

An electronic device, comprising:

• an electronic element;
• an interposer substrate having mounted on one surface thereof said electronic element;
• an interconnection substrate, comprising on one surface thereof, said interposer substrate;
• and
• a plurality of connection parts interconnecting said interposer substrate and said interconnection substrate,
• wherein one portion of said connection parts comprises an electrical connection part that electrically interconnects said interposer substrate with said interconnection substrate, and a remaining portion comprises a dummy connection part that produces no functional deficiency even when said dummy connection part fails to electrically interconnect said interposer substrate with said interconnection substrate,
• wherein said dummy connection part comprises at least one out of said connection parts at least partially overlapping with said electronic element in a plan projection,
• wherein said dummy connection part overlaps the electronic element at a location on the element which is farthest from a center of said electronic element,
• wherein the plurality of connection parts comprises a connection material, and a Young's modulus of said connection material in said dummy connection part is greater than a Young's modulus of said connection material in said electrical connection part,
• wherein the electrical connection part comprises a first electrical connection part overlapping the electronic element and a second electrical connection part not overlapping the electronic element in the plan projection,
• wherein the one surface of the interconnection substrate has a substantially rectangular shape and an imaginary diagonal line, and
• wherein a distance between the dummy connection part and the first electrical connection part which is next to the dummy connection part is shorter than a distance between the dummy connection part and the second electrical connection part which is next to the dummy connection part along the imaginary diagonal line.