Contactless interfacing of test signals with a device under test
First Claim
Patent Images
1. A semiconductor wafer comprising:
- a plurality of dies each comprising functional circuitry;
electrically conductive structures configured to contactlessly receive test signals from a test board in physical proximity to said wafer for testing said functional circuitry of said dies; and
an electrically conductive shielding plane disposed between at least part of ones of said conductive structures and at least part of said functional circuitry of said dies, said shielding plane shielding said dies from electrical interference.
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Abstract
An interface device receives test data from a tester. A signal representing the test data is transmitted to a device under test through electromagnetically coupled structures on the interface device and the device under test. The device under test processes the test data and generates response data. A signal representing the response data is transmitted to the interface device through electromagnetically coupled structures on the device under test and the interface device.
87 Citations
31 Claims
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1. A semiconductor wafer comprising:
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a plurality of dies each comprising functional circuitry; electrically conductive structures configured to contactlessly receive test signals from a test board in physical proximity to said wafer for testing said functional circuitry of said dies; and an electrically conductive shielding plane disposed between at least part of ones of said conductive structures and at least part of said functional circuitry of said dies, said shielding plane shielding said dies from electrical interference. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 21, 22, 23, 24, 25, 26)
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- 11. The semiconductor wafer of 1, wherein said electrically conductive shielding plane is sized to substantially cover said dies.
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13. The semiconductor wafer of 1, wherein said shielding plane comprises openings through which said conductive structures are electrically connected to said functional circuitry of said dies.
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14. A semiconductor wafer comprising:
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a plurality of dies each comprising functional circuitry; means for receiving test signals from ones of a plurality of tester channels on a test board in physical proximity to said wafer without physically contacting said tester channels; and an electrically conductive shielding plane disposed between at least part of said means for receiving test signals and at least part of said functional circuitry of said dies, said shielding plane shielding said dies from electrical interference. - View Dependent Claims (15, 16, 17, 18, 19, 20, 27, 28)
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- 29. The semiconductor wafer of 14, wherein said electrically conductive shielding plane is sized to substantially cover said dies.
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31. The semiconductor wafer of 14, wherein said shielding plane comprises openings through which said means for receiving test signals is electrically connected to said functional circuitry of said at least one of said dies.
Specification