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Resistive open defects in 3D ICs may change into hard open ones. In this paper, a built-in test circuit is proposed to monitor the changing process of the resistive open defects occurring at interconnects between dies embedding an IEEE 1149.1 test circuit. Feasibility of the process monitoring is examined experimentally in a PCB circuit made of ICs embedding the test circuit. It is shown that the...
In this paper, an electrical interconnect test method and a built-in test circuit are proposed to detect and locate open defects in a 3D stacked IC made of dies, in which ESD protection circuits are not embedded. The test method is based on quiescent supply current that is made flow through the interconnect to be tested only in the tests. Feasibility of the tests is evaluated by Spice simulation....
A testable design method for electrical testing is proposed in this paper to detect open defects occurring at interconnects between dies in a 3D IC and locate the defective interconnects. An IEEE 1149.1 test circuit is utilized to provide a test input vector to a targeted interconnect in the electrical tests. Feasibility of the electrical tests is evaluated by Spice simulation. It is shown by the...
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