Patent ID: 9739830
Date: 2017-08-22
CPC Classifications: G01R

Claim:
1. A test assembly, adapted to test a semiconductor device, comprising: a main circuit board comprising a surface and a plurality of pads disposed on the surface; an intermediate dielectric board detachably disposed on the surface of the main circuit board and comprising a plurality of through holes; an intermediate circuit board disposed on the intermediate dielectric board and comprising a plurality of first pads, a plurality of second pads, a first surface and a second surface opposite to the first surface, wherein the intermediate dielectric board is disposed between the intermediate circuit board and the main circuit board, the first pads are disposed on the first surface, the second pads are disposed on the second surface, and the first surface faces the intermediate dielectric board; a plurality of intermediate conductive elements disposed at the through holes, respectively, wherein each of the intermediate conductive elements electrically connects one of the pads of the main circuit board and one of the first pads of the intermediate circuit board; and a plurality of test probes disposed on the second surface of the intermediate circuit board and electrically connected to the second pads of the intermediate circuit board, respectively, wherein each of the test probes is electrically connected to the main circuit board through the intermediate circuit board and one of the intermediate conductive elements; and a bottom cover, a plurality of first fixing elements and a plurality of second fixing elements, wherein the bottom cover comprises a through opening, the intermediate circuit board and the intermediate dielectric board are detachably fixed to the bottom cover by means of the first fixing elements, the bottom cover is detachably fixed to the main circuit board by means of the second fixing elements, and the test probes are corresponding to the through opening; wherein the intermediate dielectric board, the intermediate conductive elements, the intermediate circuit board, the bottom cover and the test probes are put together to form a sub-assembly in advance, and the sub-assembly is detachably disposed on the main circuit board, and wherein each of the first fixing elements passes through the intermediate dielectric board and the intermediate circuit board to be fixed to the bottom cover.