Speaker device and method for manufacturing speaker device

A speaker device comprising:

• a substrate having a uniform thickness;
• a vibrator arranged on one face of the substrate, the vibrator comprising a base material layer, a first electrode layer, a piezoelectric element layer, and a second electrode layer, each of which has a uniform thickness, and which are layered in an order mentioned;
• and
• a resonator that resonates with the vibration of the vibrator and makes the sound wave outputted in the thickness direction of the substrate closer to a plane parallel to the substrate,
• wherein a hole through which a sound wave is outputted in a thickness direction of the substrate is provided on another face of the substrate at a position corresponding to the vibrator, the sound wave being generated by vibration of the vibrator to which a voltage signal is applied via the first electrode layer and the second electrode layer,
• wherein an attachment portion is provided at a center of the hole, the resonator being attached to the attachment portion,
• wherein scallops made of an indentation and a projection alternating in the thickness direction of the substrate are formed on an inner circumferential wall of the hole, and
• wherein scallops facing the scallops formed on the inner circumferential wall of the hole are formed on an outer circumferential wall of the attachment portion.