Electronic component device and manufacturing method therefor

摘要

In an electronic component device, electrodes of an electric component and respective wiring lines(11,12) on a board(10A) are collectively bonded together via bumps(22) using ultrasonic vibration. The wiring lines(12) include wiring lines that are substantially parallel to the direction of ultrasonic vibration and wiring lines(11) that are substantially perpendicularly to the direction of ultrasonic vibration. A displacement inhibiting layer(13) is provided inside the board(10A) in a portion below the wiring lines(11) that are substantially perpendicular to the direction of ultrasonic vibration.