Patent ID: 7279914

Claim:
An inspection apparatus for circuit board for conducting electrical inspection of an inspection object circuit board by electrically connecting inspection object electrodes of the inspection object circuit board to a plurality of inspection electrodes formed in accordance with a pattern corresponding to the inspection object electrodes through an anisotropically conductive sheet, which comprises: an upper-side board-compressing member arranged on an upper side of the inspection object circuit board and a lower-side board-compressing member arranged on a lower side of the inspection object circuit board, wherein either one of the upper-side board-compressing member and lower-side board-compressing member has the plurality of the inspection electrodes, the upper-side board-compressing member and lower-side board-compressing member are respectively provided on base plates supported by a plurality of supports infixed into support-infixing plates, and an upper-side supporting point corresponds to the upper-side support on the upper-side base plate related to the upper-side board-compressing member and a lower-side supporting point corresponds to the lower-side support on the lower-side base plate related to the lower-side board-compressing member are arranged at positions different from each other on a plane of projection in a thickness-wise direction of the upper-side board-compressing member and lower-side board-compressing member when the inspection apparatus is seen through from above, and in the measurable state, a complex stack composed of the inspection object circuit board, and the upper-side board-compressing member and lower-side board-compressing member for compressing the inspection object circuit board is deformed by shifting in the thickness-wise direction together with the upper-side base plate and lower-side base plate, at positions, over the whole body, respectively pressed by the upper-side supports and lower-side supports in accordance with the upper-side supporting points and lower-side supporting points.