Identifying defective components on a wafer using component triangulation
First Claim
1. A wireless automatic test equipment for determining locations of a first semiconductor component and a second semiconductor component that are formed onto a semiconductor wafer, comprising:
- a receiver module configured to receive a first testing operation outcome from the first semiconductor component and a second testing operation outcome from the second semiconductor component using a first receiving antenna to provide a plurality of recovered testing outcomes;
a metric measurement module configured to determine a plurality of signal metrics of the plurality of recovered testing outcomes; and
a testing processor configured to compare a first signal metric from among the plurality of signal metrics that corresponds to the first testing operation outcome and a second signal metric from among the plurality of signal metrics that corresponds to the second testing operation outcome to determine the locations of the first semiconductor component and the second semiconductor component on the semiconductor wafer.
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Accused Products
Abstract
Methods and apparatus are disclosed to simultaneously, wirelessly test semiconductor components formed on a semiconductor wafer. The semiconductor components transmit respective outcomes of a self-contained testing operation to wireless automatic test equipment via a common communication channel. Multiple receiving antennas observe the outcomes from multiple directions in three dimensional space. The wireless automatic test equipment determines whether one or more of the semiconductor components operate as expected and, optionally, may use properties of the three dimensional space to determine a location of one or more of the semiconductor components. The wireless testing equipment may additionally determine performance of the semiconductor components by detecting infrared energy emitted, transmitted, and/or reflected by the semiconductor wafer before, during, and/or after a self-contained testing operation.
38 Citations
22 Claims
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1. A wireless automatic test equipment for determining locations of a first semiconductor component and a second semiconductor component that are formed onto a semiconductor wafer, comprising:
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a receiver module configured to receive a first testing operation outcome from the first semiconductor component and a second testing operation outcome from the second semiconductor component using a first receiving antenna to provide a plurality of recovered testing outcomes; a metric measurement module configured to determine a plurality of signal metrics of the plurality of recovered testing outcomes; and a testing processor configured to compare a first signal metric from among the plurality of signal metrics that corresponds to the first testing operation outcome and a second signal metric from among the plurality of signal metrics that corresponds to the second testing operation outcome to determine the locations of the first semiconductor component and the second semiconductor component on the semiconductor wafer. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A wireless automatic test equipment for determining a location of a first semiconductor component relative to a second semiconductor component that are formed onto a semiconductor wafer, comprising:
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a receiver module configured to receive a first testing operation outcome from the first semiconductor component and a second testing operation outcome from the second semiconductor component to provide a plurality of recovered testing outcomes; a metric measurement module configured to determine a plurality of signal metrics of the plurality of recovered testing outcomes; and a testing processor configured to compare a first signal metric from among the plurality of signal metrics that corresponds to the first testing operation outcome and a second signal metric from among the plurality of signal metrics that corresponds to the second testing operation outcome to determine the location of the first semiconductor component relative to the second semiconductor component. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. A wireless automatic test equipment for determining locations of a first semiconductor component and a second semiconductor component that are formed onto a semiconductor wafer, comprising:
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a receiver module configured to receive a first testing operation outcome from the first semiconductor component and a second testing operation outcome from the second semiconductor component to provide a plurality of recovered testing outcomes; a metric measurement module configured to determine a first signal metric of a first recovered testing outcome from among the plurality of recovered testing outcomes that corresponds to the first testing operation outcome and a second signal metric of a second recovered testing outcome from among the plurality of recovered testing outcomes that corresponds to the second testing operation outcome; and a testing processor configured to use the first signal metric and the second signal metric to map the first semiconductor component and the second semiconductor component to their respective locations on the semiconductor wafer. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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Specification