Prober for testing devices in a repeat structure on a substrate
View Patent ↗A prober for testing devices in a repeat structure on a substrate is provided with a probe holder plate, probe holders mounted on the plate, and a test probe associated with each holder. Each test probe is displaceable via a manipulator connected to a probe holder, and a substrate carrier fixedly supports the substrate. Testing of devices, which are situated in a repeat structure on a substrate, in sequence without a substrate movement and avoiding individual manipulation of the test probes in relation to the contact islands on the devices, is achieved in that the probe holders are fastened on a shared probe holder plate and the probe holder plate is moved in relation to the test substrate.
1. A prober for testing devices in a repeat structure on a substrate, the prober comprising:
a substrate carrier configured to retain the substrate;
a plurality of probe holders, wherein each of the plurality of probe holders is configured to retain a test probe of a plurality of test probes, and further wherein each of the plurality of probe holders includes a manipulator configured to move the test probe of the plurality of test probes responsive to a motion of an adjustment shaft; and
a probe holder plate, wherein each of the plurality of probe holders is operatively attached to the probe holder plate, wherein the probe holder plate is contained within a vacuum chamber, and further wherein the probe holder plate is configured to translate relative to the substrate without changing a relative orientation of the plurality of test probes with respect to one another.
2. The prober of claim 1 , wherein the adjustment shaft includes a displacement shaft and corresponding universal joint that extends to an outside of the vacuum chamber, wherein the displacement shaft and corresponding universal joint are configured to control the motion of the adjustment shaft, and further wherein the displacement shaft and corresponding universal joint are configured to provide for translation of the probe holder plate relative to the vacuum chamber without changing a relative orientation of the plurality of test probes with respect to one another.
3. The prober of claim 1 , wherein all of the plurality of test probes are configured to test a single device, and further wherein the probe holder plate is configured to translate from a first test position associated with testing of a first device to a second test position associated with testing of a second device without changing a relative orientation of the plurality of test probes with respect to one another.
4. The prober of claim 1 , wherein the substrate carrier is configured to be stationary within the vacuum chamber during the testing.
5. The prober of claim 1 , wherein the substrate includes a semiconductor wafer, and further wherein the devices include at least one of semiconductor chips and micromechanical devices.
6. The prober of claim 1 , wherein the vacuum chamber is configured to produce a vacuum, and further wherein the probe holder plate is configured to translate in a first direction that is parallel to a surface of the substrate carrier and in a second direction that is parallel to the surface of the substrate carrier and perpendicular to the first direction while the probe holder plate is within the vacuum.
7. The prober of claim 6 , wherein the probe holder plate is further configured to translate in a third direction that is perpendicular to the substrate carrier.
8. The prober of claim 1 , wherein the prober further includes a motor configured to control the motion of the adjustment shaft.
9. The prober of claim 1 , wherein the substrate is in thermal communication with a temperature control device configured to control a temperature of the substrate.