The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 23, 1996
Filed:
Mar. 01, 1994
Robert L Canella, Meridian, ID (US);
Warren M Farnworth, Nampa, ID (US);
Micron Custom Manufacturing, Inc. USA, Boise, ID (US);
Abstract
An apparatus for testing an unencapsulated, diced semiconductor device comprises a test head. The test head comprises a carousel table having a chamfered portion and a chamfered pedestal. While testing is pending the pedestal rests against the chamfered portion of the carousel table, and the pedestal receives a semiconductor device to be tested. The carousel table rotates 90.degree. to position the semiconductor device under the test head. The pedestal is lifted, and the chamfered nature of the pedestal and the carousel table allow for adjustments to the pedestal in the X-, Y-, and theta-directions to align the die with a probe responsive to signals from a camera positioned above the probe. Once the die is aligned, the pedestal continues to rise until contact is made between bond pads on the die and the probe, and testing is performed.