Invention Grant
- 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.: US10365323B2Publication Date: 2019-07-30
- Inventor: Peter Douglas Andrews , David Michael Newton , David Randle Hess
- Applicant: Cascade Microtech, Inc.
- Applicant Address: US OR Beaverton
- Assignee: FormFactor Beaverton, Inc.
- Current Assignee: FormFactor Beaverton, Inc.
- Current Assignee Address: US OR Beaverton
- Agency: Dascenzo Intellectual Property Law, P.C.
- 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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