Patent ID: 9629609
Date: 2017-04-25
CPC Classifications: A61B,B06B,H02N

Claim:
1. An ultrasound element, comprising a base substrate, wherein a lower electrode layer that has a plurality of lower electrode sections, and a plurality of lower wiring sections that connect the plurality of lower electrode sections, and is connected to a lower electrode terminal to which a drive signal and a bias signal are applied, a lower insulating layer, an upper insulating layer in which a plurality of cavities are formed, an upper electrode layer that has a plurality of upper electrode sections that are disposed to face the respective lower electrode sections via the respective cavities, and a plurality of upper wiring sections that connect the plurality of upper electrode sections, and is connected to an upper electrode terminal at a ground potential, for detecting a capacitance signal, and a protection layer are sequentially stacked on the base substrate, the ultrasound element further comprising: a first shield electrode section that is formed at least at an upper side of the lower wiring sections and at a lower side of the upper electrode sections, in a region including regions where the upper electrode sections and the lower electrode sections are disposed to face each other, the first shield electrode section being connected to a shield electrode terminal at a ground potential.