Electromigration Modeling at Circuit Layout Level

Electromigration Modeling at Circuit Layout Level

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Integrated circuit (IC) reliability is of increasing concern in present-day IC technology where the interconnect failures significantly increases the failure rate for ICs with decreasing interconnect dimension and increasing number of interconnect levels. Electromigration (EM) of interconnects has now become the dominant failure mechanism that determines the circuit reliability. This brief addresses the readers to the necessity of 3D real circuit modelling in order to evaluate the EM of interconnect system in ICs, and how they can create such models for their own applications. A 3-dimensional (3D) electro-thermo-structural model as opposed to the conventional current density based 2-dimensional (2D) models is presented at circuit-layout level.The current density and temperature distributions of the 3D model at any load step can be viewed after the thermal-electric simulation. Figures 2.17 and 2.18 show the current density and temperature distributions of the interconnects of the anbsp;...

Title:Electromigration Modeling at Circuit Layout Level
Author: Cher Ming Tan, Feifei He
Publisher:Springer Science & Business Media - 2013-03-16

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