PROBLEM TO BE SOLVED: To provide an ultrasonic wave device unit that can be reduced in size with a simple configuration, an ultrasonic wave probe, and an ultrasonic wave apparatus.SOLUTION: An ultrasonic wave device unit 4 comprises: an ultrasonic wave device 5 that has device-side terminals reinforcing plates that each have a supporting surface supporting the ultrasonic wave device and a flexible printed board 6 that is connected to the ultrasonic wave device. The flexible printed board includes connection parts that are connected to the device-side terminals, bent parts 615, 618 that are continuous to the connection parts and extended in a direction separating from the ultrasonic wave device, and outer edge parts that are provided at ends in the extension direction of the bent parts. The reinforcing plates each include projections 717, 718 that are provided on a first side along a first direction intersecting with the extension direction and opposite to the bent part and the back side on the opposite side of the supporting surface, and are contact with the outer edge parts when the flexible printed board is bent at the bent part along the first side to be folded.SELECTED DRAWING: Figure 14COPYRIGHT: (C)2019,JPO&INPIT【課題】簡素な構成で小型化が可能な超音波デバイスユニット、超音波探触子、及び超音波装置を提供する。【解決手段】超音波デバイスユニット4は、デバイス側端子を有する超音波デバイス5と、超音波デバイスを支持する支持面を有する補強板と、超音波デバイスに接続されるフレキシブルプリント基板6と、を備える。フレキシブルプリント基板は、デバイス側端子に接続される接続部と、接続部に連続し、超音波デバイスから離れる方向に延設される屈曲部615、618と、屈曲部の延出方向の端部に設けられる外縁部と、を備える。補強板は、延出方向に交差する第一方向に沿い、屈曲部に対向する第一辺と、支持面とは反対側の裏面に設けられ、フレキシブルプリント基板を第一辺に沿って屈曲部で湾曲させて折り曲げた際に、外縁部が接する突出部717、718を備える。【選択図】図14
