Patent ID: 7874213

Claim:
An ultrasonic test apparatus for inspecting defects in integrated circuits by projecting ultrasonic waves from a transmitting transducer and receiving ultrasonic waves passing through or reflected from the integrated circuits by a receiving transducer to detect the defects, the ultrasonic test apparatus comprising: a container for containing de-ionized water therein; a first positioning member accommodated in the container, the first positioning member attaching the transmitting transducer thereto and for allowing the transmitting transducer slide therealong; a second positioning member accommodated in the container and parallel to the first positioning member, the second positioning member attaching the receiving transducer thereto and for moving the receiving transducer therealong in synchronization with the transmitting transducer for scanning the integrated circuits; a supporting member disposed in the de-ionized water, and located between the transmitting transducer and the receiving transducer, for supporting the integrated circuits to be detected thereon, the supporting member further defining at least one elongated slot, the at least one elongated slot extending in a direction parallel to the first and second positioning members; at least one pressing member disposed in the de-ionized water, and located between the transmitting transducer and the receiving transducer, for at least partially pressing the integrated circuits to be detected; and a fixing member disposed in the de-ionized water, and located between the transmitting transducer and the receiving transducer, the fixing member extending through the at least one elongated slot and the at least pressing member to tightly fix the at least one pressing member and the supporting member together for mounting at least part of the integrated circuits between the at least one pressing member and the supporting member; wherein the fixing member slides along the at least one elongated slot to drive the at least one pressing member and the integrated circuits to slide relative to the supporting member in a direction parallel to the first and second positioning members, and a position corresponding to the integrated circuit to be detected is adjusted.