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 method for testing devices in a repeat structure on a substrate that is located within a vacuum chamber, the method comprising:
adjusting a relative orientation of a plurality of test probes to correspond to a plurality of test contacts on a first device at a first test location, wherein each of the plurality of test probes is retained by a respective probe holder of a plurality of probe holders, wherein each of the plurality of probe holders includes a respective manipulator of a plurality of manipulators, and further wherein the adjusting includes adjusting the plurality of manipulators by moving a plurality of linkages, wherein each linkage of the plurality of linkages extends from a respective manipulator of the plurality of manipulators to a region outside the vacuum chamber;
testing the first device with the plurality of test probes;
translating the plurality of test probes to a second test location that includes a second device, wherein each of the plurality of probe holders is attached to a probe holder plate, wherein the translating includes translating the probe holder plate, and further wherein the translating includes maintaining the relative orientation of the plurality of test probes during the translating; and
testing the second device with the plurality of test probes.
2. The method of claim 1 , wherein the testing the first device includes establishing electrical contact between the plurality of test contacts on the first device and the plurality of test probes, wherein the testing the second device includes establishing electrical contact between a plurality of test contacts on the second device and the plurality of test probes, and further wherein the testing the first device and the testing the second device both include maintaining the relative orientation of the plurality of test probes during the establishing.
3. The method of claim 1 , wherein the translating includes translating the probe holder plate.
4. The method of claim 3 , wherein the translating includes maintaining the substrate in a fixed location.
5. The method of claim 1 , wherein the adjusting includes individually adjusting at least a portion of the plurality of test probes.
6. The method of claim 1 , wherein the method includes drawing a vacuum within the vacuum chamber.
7. The method of claim 6 , wherein the adjusting, the testing the first device, the translating, and the testing the second device are performed while the substrate is within the vacuum.
8. The method of claim 6 , wherein the adjusting includes actuating a motor that is configured to perform the adjusting.
9. The method of claim 6 , wherein the method further includes controlling a temperature of the substrate.
10. The method of claim 1 , wherein the plurality of manipulators is located within the vacuum chamber, and further wherein the adjusting includes adjusting the plurality of manipulators within the vacuum chamber.
11. The method of claim 10 , wherein each linkage of the plurality of linkages extends from within the vacuum chamber to the region outside the vacuum chamber.
12. The method of claim 11 , wherein each linkage of the plurality of linkages extends through a wall of the vacuum chamber in a vacuum-tight way.
13. The method of claim 1 , wherein each linkage of the plurality of linkages includes a displacement wheel, which is located outside the vacuum chamber, a rotating universal shaft, and a universal joint, and further wherein the adjusting includes rotating the displacement wheel.
14. The method of claim 1 , wherein the substrate is fixed on a substrate carrier, and the translating includes translating the probe holder plate relative to the substrate carrier.
15. The method of claim 1 , wherein the probe holder plate is located within the vacuum chamber, and further wherein the translating includes translating the probe holder plate within the vacuum chamber.