Xilinx, Inc.

Yuqing Gong

Boon Yong Ang

Suresh Parameswaran

Henley Liu

Myongseob Kim

Cheang-Whang Chang

Suresh P Parameswaran

A test vehicle, along with methods for fabricating and using a test vehicle, are disclosed herein. In one example, a test vehicle is provided that includes a substrate, at least a first passive die mounted on the substrate, and at least a first test die mounted on the substrate. The first test die includes test circuitry configured to test continuity through solder interconnects formed between the substrate and the first passive die.

Test vehicle for package testing

A circuit for testing bond connections between a first die and a second die is described. The circuit comprises a defect monitoring circuit implemented on the first die, which is configured as a test die; and a plurality of bond connections between the first die and the second die; wherein the defect monitoring circuit is configured to detect a defect in a bond connection of the plurality of bond connections between the first die and the second die. A method of testing bond connections between a first die and a second die is also described.

Circuit for and method of testing bond connections between a first die and a second die

An integrated circuit (IC) comprises routing circuitry including a plurality of signal line segments in routing layers of the IC, and a plurality of micro-bump contacts coupled to the routing circuitry. The IC includes a plurality of test circuits coupled to respective subsets of the plurality of signal line segments. Each test circuit is configured to connect micro-bump contacts in the respective subset to form first and second sets of daisy chains. Each test circuit is configured to test the first and second sets of daisy chains for open circuits and test for short circuits between the first and second sets of daisy chains. Each test circuit is configured to determine the locations of detected open circuits and determine the locations of detected short circuits.

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San Jose, CA, United States of America

Yuqing Gong