unit of the present invention is an ultrasonic probe , ultrasonic probe and the ultrasonic probe device in the related modules will . Unit ultrasonic probe according to the invention is the ultrasonic probe unit back block unit; The flexible substrate portion is disposed on an upper surface of the rear block portion ; And is disposed on the upper surface portion is connected to the flexible substrate in the flexible substrate and the electric part , the back is formed of a size smaller than a block unit , and a piezoelectric wafer of generating ultrasonic waves , the ultrasonic probe according to the invention in the cross direction Since even when increasing the number of the piezoelectric wafer to increase the channel by stacking the unit ultrasonic probe including piezoelectric wafer, the structure of the flexible substrate can be prevented from being complicated, the price increases exponentially . ;
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