Patent ID: 6859054

Claim:
A probe contact system for establishing electrical connection between contact targets and a semiconductor test system, comprising: a main frame having an opening on a bottom at about a center thereof; a contactor carrier attached to the main frame, the contactor carrier mounting a plurality of contactors in a manner that lower ends of the contactors being projected from a lower surface of the contactor carrier through the opening of the main frame and top ends of the contactors being projected from an upper surface of the contactor carrier; a flexible printed circuit board having contact pads at a center area thereof and signal lines connected to the contact pads and extended to an end of the flexible printed circuit board, the center area of said flexible printed circuit board being mounted on the contactor carrier in a manner that the top ends of the contactors contacting with the contact pads on the flexible printed circuit board; wherein each of said contactors has a top spring for resiliently contacting the top end with the contact pad on the flexible printed circuit board, and wherein the end of said flexible printed circuit board with said signal lines is connected to a test head of the semiconductor test system; wherein each of the contactors includes a stopper to position the contactor on the contactor carrier when the contactor is inserted in a through hole of the contactor carrier; wherein said top spring of the contactor is provided between the top end and the stopper, and wherein each of the contactors further comprises a main spring between a lower end and the stopper for producing a resilient contact force when the lower end is pressed against the contact target.