| 摘要 |
A bump is disposed on a surface of an actuator unit and communicated with a corresponding electrode of the actuator unit, and a part of the bump is extended through an insulating covering material to be electrically connected to a corresponding terminal of a wiring board. When a point which is positioned on an outer circumferential surface of a base end portion of the bump, and is closest to a drive part is assumed to be a closest point, and a point which is positioned on the outer circumferential surface of the base end portion of the bump, and is most distant from the drive part is assumed to be a most distant point, a close region including the closest point is processed such that the uncured insulating covering material is less likely to flow in the close region than in a distant region including the most distant point. |
