Patent ID: 8901948

Claim:
A wafer probe card comprising: an adapter module having: a holding member having: a first hollow-out area centrally formed through the holding member; a fixing plate recess annularly formed in a top of the holding member and around the first hollow-out area; and an interposer recess formed in a bottom of the holding member and around the first hollow-out area; and an interposer detachably mounted in the interposer recess of the bottom of the holding member and aligning with the first hollow-out area of the holding member, wherein the interposer has multiple contact pads respectively formed on two opposite sides of the interposer, wherein the contact pads on one side of the interposer are electrically and respectively connected with the contact pads on the other side of the interposer; and a probe module having: a frame assembly having a second hollow-out area centrally formed through the frame assembly; a space transformer mounted in the second hollow-out area and having multiple connection terminals respectively formed on a top and a bottom of the space transformer, wherein the multiple connection terminals on the top of the space transformer are respectively and electrically connected with the multiple connection terminals on the bottom of the space transformer; a probe assembly mounted within the second hollow-out area and having multiple probes respectively and electrically contacting the multiple connection terminals of the space transformer; and a fixing plate mounted in the fixing plate recess, with the fixing plate having a probe opening centrally formed through the fixing plate and aligning with the multiple probes of the probe assembly, wherein the probe module is mounted on the top of the holding member of the adapter module by mounting the fixing plate on the holding member, wherein the frame assembly, the probe assembly and the space transformer are positioned in the first hollow-out area of the holding member and the multiple connection terminals on the bottom of the space transformer electrically and respectively contact the multiple contact pads of the interposer.