PROBLEM TO BE SOLVED: To provide an ultrasonic device, an ultrasonic probe, and an ultrasonic apparatus capable of changing a direction of ultrasonic wave transmission and capable of being downsized.SOLUTION: An ultrasonic device 1 includes: an ultrasonic substrate 22 in which a plurality of ultrasonic elements are disposed in two dimensional array along a first direction and a second direction which cross each other and a drive circuit 24. The drive circuit 24 includes: a signal output part 242 for outputting a driving signal to be applied to the ultrasonic element a first switch 244 which is provided between the signal output part 242 and a first terminal 223A1 and switches between electric connection and disconnection between the signal output part 242 and the first terminal 223A1 and a second switch 245 which is provided between the signal output part 242 and a second terminal 223A2 and switches between electric connection and disconnection between the signal output part 242 and the second terminal 223A2.SELECTED DRAWING: Figure 5COPYRIGHT: (C)2018,JPO&INPIT【課題】超音波の送波方向を変更可能で、かつ小型化が可能な超音波デバイス、超音波プローブ及び超音波装置を提供する。【解決手段】超音波装置1は、互いに交差する第一方向方向及び第二方向に沿って複数の超音波素子が2次元アレイ状に配置されている超音波基板22と、駆動回路24と、を有する。駆動回路24は、超音波素子に印加する駆動信号を出力する信号出力部242と、信号出力部242と第一端子223A1との間に設けられて、信号出力部242と第一端子223A1との電気的な接続及び切断を切り替える第一スイッチ244と、信号出力部242と第二端子223A2との間に設けられて、信号出力部242と第二端子223A2との電気的な接続及び切断を切り替える第二スイッチ245と、を有する。【選択図】図5
