On-clip high frequency reliability and failure test structures

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With rotor

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324 731, 324763, G01R 1512

Patent

active

056252889

ABSTRACT:
Self-stressing test structures for realistic high frequency reliability characterizations. An on-chip high frequency oscillator, controlled by DC signals from off-chip, provides a range of high frequency pulses to test structures. The test structures provide information with regard to a variety of reliability failure mechanisms, including hot-carriers, electromigration, and oxide breakdown. The system is normally integrated at the wafer level to predict the failure mechanisms of the production integrated circuits on the same wafer.

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