Manufacturing method of semiconductor integrated circuit device and probe card
Electrical testing is to be performed on a semiconductor integrated circuit device which the test pads formed. To facilitate such testing, the method of manufacture of the semiconductor integrated circuit device employs a probe card which has two or more contact terminals which can contact two or more electrodes. This probe card includes, in opposition to a wiring substrate of the semiconductor integrated circuit device in which a first wiring is formed, a first sheet having two or more contact terminals to contact the two or more electrodes; a second wiring electrically connected to the two or more contact terminals and the first wiring; and first dummy wirings which are near the region of formation of the two or more contact terminals, are arranged to a non-forming region of the second wiring, and do not participate in signal transfer.
1. A manufacturing method of a semiconductor integrated circuit device, comprising:
(a) preparing a semiconductor wafer which has been divided in two or more chip regions each having a semiconductor integrated circuit formed thereover, and has, formed over a main surface of the wafer, two or more electrodes to be electrically connected to the semiconductor integrated circuit;
(b) preparing a probe card which has two or more contact terminals which contact the two or more electrodes; and
(c) conducting electrical testing of the semiconductor integrated circuit, tips of the two or more contact terminals being contacted to the two or more electrodes, wherein the step (b) comprises the steps of:
(b1) preparing, as opposed to a wiring substrate in which a first wiring is formed, a first sheet having the two or more contact terminals to contact the two or more electrodes; second wirings electrically connected to the two or more contact terminals and the first wiring; and a metal wiring for a shield formed along a signal wire which is easy to be influenced by a noise among the second wirings; and
(b2) after the step (b1), attaching the first sheet over the wiring substrate in a state that a domain in which the two or more contact terminals are formed of the first sheet, are pressed from a back of the first sheet.
2. The manufacturing method of a semiconductor integrated circuit device according to claim 1 , wherein the metal wiring for a shield is fixed to a grand level.
3. The manufacturing method of a semiconductor integrated circuit device according to claim 2 , wherein the signal wire which is easy to be influenced by a noise among the second wirings is shielded so that the signal wire is put between two or more metal wirings for a shield of the same wiring layer as the signal wire.
4. The manufacturing method of a semiconductor integrated circuit device according to claim 2 , wherein the signal wire which is easy to be influenced by a noise among the second wirings is shielded by the metal wiring for a shield formed in an upper layer or a lower layer.
5. The manufacturing method of a semiconductor integrated circuit device according to claim 4 , wherein the metal wiring for a shield is formed more widely than a width of the signal wire which is easy to be influenced by a noise.
6. A manufacturing method of a semiconductor integrated circuit device, comprising:
(a) preparing a semiconductor wafer which has been divided in two or more chip regions each having a semiconductor integrated circuit formed thereover, and has, formed over a main surface of the wafer, two or more electrodes to be electrically connected to the semiconductor integrated circuit;
(b) preparing a probe card which has two or more contact terminals which contact the two or more electrodes; and
(c) conducting electrical testing of the semiconductor integrated circuit, tips of the two or more contact terminals being contacted to the two or more electrodes, wherein the step (b) comprises the steps of:
(b1) positioning, as opposed to a wiring substrate in which a first wiring is formed, based on a mark for positioning a first sheet having the two or more contact terminals to contact the two or more electrodes, a second wiring electrically connected to the two or more contact terminals and the first wiring, and a pattern with which a screw hole through which a screw can penetrate and the mark for positioning are formed; and (b2) after the step (b1), attaching the first sheet over the wiring substrate in a state that a domain in which the two or more contact terminals are formed of the first sheet, are pressed from a back of the first sheet.
7. The manufacturing method of a semiconductor integrated circuit device according to claim 6 , wherein the second wiring is formed in a shape of radiation toward a perimeter from a central part of the first sheet, and a dummy wiring which does not participate in signal transfer is formed in a gap.