Invention Application
- Patent Title: PROBE SYSTEMS AND METHODS FOR AUTOMATICALLY MAINTAINING ALIGNMENT BETWEEN A PROBE AND A DEVICE UNDER TEST DURING A TEMPERATURE CHANGE
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Application No.: US15339419Application Date: 2016-10-31
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Publication No.: US20170146594A1Publication Date: 2017-05-25
- Inventor: Peter Douglas Andrews , David Michael Newton , David Randle Hess
- Applicant: Cascade Microtech, Inc.
- Main IPC: G01R31/28
- IPC: G01R31/28

Abstract:
Probe systems and methods for automatically maintaining alignment between a probe and a device under test (DUT) during a temperature change. The methods include collecting an initial image of a planar offset fiducial and determining an initial height reference of a height offset fiducial. The methods further include changing a temperature of the DUT, automatically maintaining a planar alignment between a probe and the DUT during the changing, and automatically maintaining a height alignment between the probe and the BUT during the changing. The probe systems include a chuck, which defines a support surface configured to support a substrate that includes the DUT, and a probe head assembly, which includes a probe configured to contact a corresponding contact pad of the DUT. The probe systems further include a substrate thermal module, which is configured to regulate a temperature of the DUT, and a controller programmed to execute the methods.
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