Simultaneously tagging of semiconductor components on a wafer
View Patent ↗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.
1. A wireless automatic test equipment for simultaneously testing a plurality of semiconductor components formed onto a semiconductor wafer, comprising:
a transmitter module configured to simultaneously send a plurality of initiate self-contained testing operation signals to the plurality of semiconductor components;
a receiver module configured to receive a plurality of testing operation outcomes from the plurality of semiconductor components over a common communication channel to provide a plurality of recovered testing outcomes, each of the plurality of recovered testing outcomes having a corresponding innate identification number from among a plurality of unique identification numbers that identifies one of the plurality of semiconductor components and indicating whether its respective semiconductor component operates as expected; and
a testing processor configured to determine a first group of semiconductor components from among the plurality of semiconductor components that operate as expected based upon the plurality of recovered testing outcomes and corresponding first locations of the first grotto of semiconductor components within the semiconductor wafer based upon their corresponding unique identification numbers from among the identification numbers.
2. The wireless automatic test equipment of claim 1 , further comprising:
a plurality of transmitting antennas, coupled to the transmitter module, configured to simultaneously send the plurality of initiate self-contained testing operation signals to the plurality of semiconductor components.
3. The wireless automatic test equipment of claim 2 , wherein the plurality of transmitting antennas are positioned along a radius of a spherical shell in a three dimensional space.
4. The wireless automatic test equipment of claim 2 , wherein the plurality of transmitting antennas are positioned along a corresponding radius from among a. plurality of radii of a corresponding spherical shell from among a plurality of spherical shells in a three dimensional space.
5. The wireless automatic test equipment of claim 1 , wherein the receiver module is further configured to simultaneously receive the plurality of testing operation outcomes over the common communication channel.
6. The wireless automatic test equipment of claim 1 , wherein the receiver module is further configured to decode the plurality of testing operation outcomes in accordance with a multiple access transmission scheme to provide the plurality of recovered testing outcomes.
7. The wireless automatic test equipment of claim 6 , wherein the multiple access transmission scheme is a code division multiple access (CDMA) scheme.
8. The wireless automatic test equipment of claim 1 , wherein the testing processor is further configured to determine a second group of semiconductor components from among the plurality of semiconductor components that operate unexpectedly based upon the plurality of recovered testing outcomes.
9. The wireless automatic test equipment of claim 1 , wherein the testing processor is further configured to compare the plurality of unique identification numbers to a predetermined mapping of the plurality of unique identification numbers to their corresponding locations within the semiconductor wafer to assemble a map indicating the corresponding first locations of the first group of semiconductor components.
10. The wireless automatic test equipment of claim 1 , wherein the testing processor is further configured to iteratively map the plurality of unique identification numbers to their corresponding semiconductor components based upon relationships between the plurality of unique identification numbers.
11. A semiconductor component formed on a semiconductor water, comprising:
a transceiver module configured to receive a plurality of initiate testing operation signals and to provide a plurality of initiate test control signals;
a metric measurement module configured to determine a plurality of signal metrics for the plurality of initiate test control signals;
a testing module configured to generate a unique identification number for the semiconductor component based upon the plurality of signal metrics and to provide a self-contained testing operation in response to the plurality of initiate test control signals; and
an integrated circuit under test configured to provide an indication of operability in response to executing the self-contained testing operation, the indication of operability indicating whether the integrated circuit under test operates as expected,
wherein the testing module is further configured to append the unique identification number to the indication of operability.
12. The semiconductor component of claim 11 , wherein the transceiver module is configured to encode the indication of operability in accordance with a multiple access transmission scheme.
13. The semiconductor component of claim 11 , wherein the multiple access transmission scheme is a code division multiple access (CDMA) scheme.
14. The semiconductor component of claim 11 , wherein the testing module is further configured to enter into a testing mode of operation in response to the plurality of initiate testing operation signals.
15. The semiconductor component of claim 11 , wherein the transceiver module comprises:
a downconverter module configured to downconvert the plurality of initiate test control signals to provide a plurality of downconverted testing operation outcomes;
a demodulating module configured to demodulate the plurality of doyvnconverted testing operation outcomes in accordance with a digital modulation technique to provide a plurality of demodulated testing operation outcomes; and
a decoding module configured to decode the plurality of demodulated testing operation outcomes in accordance with a multiple access transmission scheme to provide the plurality of initiate test control signals.
16. A semiconductor component formed on a semiconductor wafer, comprising:
a transceiver module configured to receive a plurality of initiate testing operation signals to provide a plurality of initiate test control signals;
a testing module configured to generate a unique identification number for the semiconductor component and to provide a self-contained testing operation in response to the plurality of initiate test control signals; and
an integrated circuit under test configured to provide an indication of operability in response to executing the sells-contained testing operation, the indication of operability indicating whether the integrated circuit under test operates as expected,
wherein the testing module is further configured to append the unique identification number to the indication of operability.
17. The semiconductor component of claim 16 , wherein the transceiver module is configured to encode the indication of operability in accordance with a multiple access transmission scheme.
18. The semiconductor component of claim 16 , wherein the multiple access transmission scheme is a code division multiple access (CDMA) scheme.
19. The semiconductor component of claim 16 , wherein the testing module enters into a testing mode of operation in response to the plurality of testing operation signals.
20. The semiconductor component of claim 16 , wherein the transceiver module comprises:
dowuconverter module configured to downconvert the plurality of initiate test control signals to provide a plurality of downconverted testing operation outcomes;
a demodulating module configured to demodulate the plurality of downconverted testing operation outcomes in accordance with a digital modulation technique to provide a plurality of demodulated testing operation outcomes; and
a decoding module configured to decode the plurality of demodulated testing operation outcomes in accordance with a multiple access transmission scheme to provide the plurality of initiate test control signals.
21. The semiconductor component of claim. 16 , wherein the testing module comprises:
a random number generator configured to generate the unique identification number.
22. The wireless automatic test equipment of claim 8 , wherein the testing processor is further configured to determine corresponding second locations of the second group of semiconductor components within the semiconductor wafer based upon their corresponding unique identification numbers from among the plurality of unique identification numbers.