Leakage Detection Circuit Integration for Precise Microelectronic Testing
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Solution Overview
Problem
Existing microelectronic circuit testing methods fail to effectively identify defects at early stages, particularly in wafer-level and post-singulation testing, necessitating improved techniques for detecting leakage currents in microelectronic circuits.
Innovation Solution
A tester apparatus with integrated leakage detection circuits, utilizing field-effect and bipolar junction transistors to monitor and control leakage currents, ensuring precise detection and limiting current magnitude through switch mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If leakage detection circuits are integrated into the tester apparatus, then measurement precision for detecting leakage currents is improved, but device complexity increases
Solution Approach 1:
The patent merges the leakage detection function with the existing tester apparatus by integrating leakage detection circuits that share common components such as holders, contacts, and test leads. The leakage detection circuit uses the same physical infrastructure to monitor leakage currents, thereby improving measurement precision without proportionally increasing device complexity.
Solution Approach 2:
The tester apparatus is designed with multi-functionality, where the same hardware components (holders, contacts, test leads) serve both conventional testing and leakage detection purposes. The leakage detection circuit leverages the existing universal infrastructure to perform additional leakage current monitoring functions.
2Reliability
If switch mechanisms are used to limit leakage current magnitude, then reliability of the testing system is improved, but device complexity increases
Solution Approach 1:
The patent introduces switch mechanisms as intermediary components between the leakage detection circuit and the device under test. These switches act as mediators that can open or close circuits to limit leakage current magnitude, thereby improving system reliability by preventing excessive current flow while adding controlled complexity through the switch components.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances the ability to identify and manage leakage currents in microelectronic circuits, improving defect detection during early-stage manufacturing and post-singulation testing.
Implementation Method 1
the first switch is a field-effect transistor, and the input and output terminals and the switching terminal of the first switch are a drain, a source, and a gate of the field-effect transistor, respectively
Implementation Method 2
the second switch is a bipolar junction transistor, and the input and output terminals, and the switching terminal of the second switch are a collector, an emitter, and a base of the bipolar junction transistor
Data Source
AI summary
A leakage detection circuit for connecting to a device includes an input voltage terminal, a source voltage terminal for connection to a source of the respective device, a voltage monitor terminal, a reference voltage terminal, a first switch and a second switch. The first switch has a switch terminal connected to the input voltage terminal, an output terminal connected to the source voltage terminal, and an input terminal connected to the voltage monitor terminal. The second switch has a switch terminal connected to the voltage monitor terminal, an input terminal connected to the input voltage terminal, and an output terminal connected to the reference voltage terminal.