Patent ID: 7757389

Claim:
A method of manufacturing an ultrasonic probe having: plural arranged ultrasonic transducers; and a flexible printed circuit board in which plural wiring patterns to be connected with the plural ultrasonic transducers are arranged on the surface of an electrically insulative substrate being spaced along the arranging direction of the plural ultrasonic transducers, the method comprising: a cutting step for cutting the flexible printed circuit board, wherein: the flexible printed circuit board used in the cutting step includes a portion where the substrate extends in the direction different from the arranging direction of the plural ultrasonic transducers, wherein the plural wiring patterns extend such that a distance between each of the plural wiring patterns is narrowed along the extending direction of the substrate; and the flexible printed circuit board is cut in the cutting step such that the arranging positions for the plural ultrasonic transducers and the positions for the plural wiring patterns in the flexible printed circuit board correspond to each other, wherein the flexible printed circuit board is cut in accordance with a resistance value of the plural wiring patterns.