Optimization Methods for Post-Bond Testing of 3D Stacked ICs

  • Authors:
  • Brandon Noia;Krishnendu Chakrabarty;Erik Jan Marinissen

  • Affiliations:
  • Duke University, Durham, USA 27708;Duke University, Durham, USA 27708;, Leuven, Belgium 3001

  • Venue:
  • Journal of Electronic Testing: Theory and Applications
  • Year:
  • 2012

Quantified Score

Hi-index 0.00

Visualization

Abstract

Testing of three-dimensional (3D) stacked ICs (SICs) is starting to receive considerable attention in the semiconductor industry. Since the die-stacking steps of thinning, alignment, and bonding can introduce defects, there may be a need to test multiple subsequent partial stacks during 3D assembly. We address the problem of test-architecture optimization for 3D stacked ICs to minimize overall test time when either the complete stack only, or the complete stack and multiple partial stacks, need to be tested. A general solution to this problem provides several options for 3D stack testing in a unified framework. We show that optimal test-architecture solutions and test schedules for multiple test insertions are different from their counterparts for a single final stack test. In addition, we present optimization techniques for the testing of TSVs and die-external logic in combination with the dies in the stack.