One-Way Semiconductor Device Testing via Power Line
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Solution Overview
Problem
The complexity of integrated circuits and limited resources in Automatic Test Equipment (ATE) hinder high testing parallelism, increasing costs and complicating the testing architecture, especially with bidirectional information exchange required for each device under test.
Innovation Solution
A one-way testing method where signals are transmitted only from the tester ATE to the device DUT, utilizing an integrated testing circuit with a decoder block, analyzer block, and result block to execute tests, compare results, and store outcome information, potentially using wireless or wired communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If bidirectional information exchange is implemented for each device under test, then testing completeness and accuracy are improved, but device complexity and resource demands on the tester increase
Solution Approach 1:
The invention extracts the information exchange function from the traditional bidirectional communication system and implements it unidirectionally through the power line. The tester ATE sends all necessary test commands and receives all test results through the same power line connection, eliminating the need for separate communication channels and reducing architectural complexity while maintaining testing completeness
Solution Approach 2:
The power line is given multiple functions: it simultaneously provides electrical power to the device under test and serves as a communication channel for bidirectional information exchange. This multi-functionality eliminates the need for separate communication interfaces, reducing device complexity and resource demands on the tester ATE
2Productivity
If high testing parallelism is implemented, then productivity is improved, but device complexity and resource demands on the tester increase
Solution Approach 1:
The invention merges multiple communication functions into a single power line interface. By combining power delivery and bidirectional data communication through one channel, the system enables high testing parallelism without proportionally increasing interface complexity or resource demands on the tester ATE
Solution Approach 2:
The power line acts as an intermediary medium that facilitates efficient bidirectional communication between the tester ATE and multiple devices under test simultaneously. This intermediary approach enables scalable parallel testing by providing a standardized communication path that can be shared across multiple devices without linearly increasing system complexity
Data Source
AI summary
A testing method is described of at least one device provided with an integrated testing circuit and in communication with at least one tester where messages/instructions/test signals/information are exclusively sent from the tester to the device. A testing architecture is also described for implementing this testing method.