Apparatus and methods for de-embedding through substrate vias
First Claim
1. A method, comprising:
- providing a through substrate via (“
TSV”
) device under test extending through and disposed on a substrate;
providing a plurality of surrounding TSVs around the device under test on the substrate;
coupling a signal to the TSV device under test on a front side of the substrate;
providing a back side metal coupling the TSV device under test and the surrounding TSVs at the back side of the substrate;
providing a dummy structure equal in area to the back side metal area of the back side metal;
supplying a signal to TSV device under test; and
receiving the signal through the surrounding TSVs coupled in parallel.
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Accused Products
Abstract
A method includes providing on a substrate having at least two through substrate vias (“TSVs”) a plurality of test structures for de-embedding the measurement of the intrinsic characteristics of a device under test (DUT) including at least two of the TSVs; measuring the intrinsic characteristics [L] for a first and a second test structure on the substrate including two pads coupled with a transmission line of length L; using simultaneous solutions of ABCD matrix or T matrix form equations, and the measured intrinsic characteristics, solving for the intrinsic characteristics of the pads and the transmission lines; de-embedding the measurements of the third and fourth test structures using the intrinsic characteristics of the pads and the transmission lines; and using simultaneous solutions of ABCD matrix or T matrix form equations for BM_L and BM_LX, and the measured intrinsic characteristics, solving for the intrinsic characteristics of the TSVs.
48 Citations
11 Claims
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1. A method, comprising:
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providing a through substrate via (“
TSV”
) device under test extending through and disposed on a substrate;providing a plurality of surrounding TSVs around the device under test on the substrate; coupling a signal to the TSV device under test on a front side of the substrate; providing a back side metal coupling the TSV device under test and the surrounding TSVs at the back side of the substrate; providing a dummy structure equal in area to the back side metal area of the back side metal; supplying a signal to TSV device under test; and receiving the signal through the surrounding TSVs coupled in parallel. - View Dependent Claims (2, 3, 4, 5)
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6. A method, comprising:
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providing on a substrate having at least two through substrate vias (“
TSVs”
) a plurality of test structures for de-embedding the measurement of the intrinsic characteristics of a device under test (DUT) including at least two of the TSVs;measuring the intrinsic characteristics [L] for a first test structure on the substrate including two pads coupled with a transmission line of length L; measuring the intrinsic characteristics [LX] of a second test structure on the substrate including two pads coupled with a transmission line of length L*X, where X is greater than 1; measuring the intrinsic characteristics [BM_L] of a third test structure on the substrate including a first metal line of length [L] and at least two TSVs; measuring the intrinsic characteristics [BM_LX] of a fourth test structure on the substrate including a second metal line of length L*X and at least two TSVs; using simultaneous solutions of ABCD matrix or T matrix form equations for L and LX, and the measured intrinsic characteristics, solving for the intrinsic characteristics of the pads and the transmission lines; de-embedding the measurements of the third and fourth test structures using the intrinsic characteristics of the pads and the transmission lines; and using simultaneous solutions of ABCD matrix or T matrix form equations for BM_L and BM_LX, and the measured intrinsic characteristics, solving for the intrinsic characteristics of the TSVs and the metal lines. - View Dependent Claims (7, 8, 9, 10, 11)
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Specification