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:
Jan. 26, 2016
Filed:
Dec. 30, 2012
Ching-tsung Chen, New Taipei, TW;
Weichung Chen, New Taipei, TW;
Ching-Tsung Chen, New Taipei, TW;
Weichung Chen, New Taipei, TW;
Global Unichip Corp., Hsinchu, TW;
Taiwan Semiconductor Manufacturing Company Ltd., Hsinchu, TW;
Abstract
In this invention, a test system includes a tester and a switching module for connecting any pin to the tester for testing a device-under-test (DUT), the test system has a rectifying device between the ground of the DUT and the ground of the switching module in order to isolate the DUT from the switching module, thereby blocking unwanted current flowing between the DUT and the switching module to ensure the correctness of the testing. Since the ground of the switching module is not directly connected to the ground of the DUT and the tester, the rectifying device will keep the voltage difference between the ground of the switching module and the DUT in a range between zero and the cut-in voltage of the rectifying device, thereby allowing single-ended signals to be used between the switching module and the tester or the DUT.