Electronic Module Peeling Detection via Capacitance
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Solution Overview
Problem
Electronic modules, particularly those handling large power, face heat dissipation issues due to layer peeling, which can lead to failure as the peeled portion disrupts heat conduction.
Innovation Solution
Incorporating a sense electrode and a capacitance-to-voltage converter in the electronic module's wiring layer, opposed to a specified conductor via an insulating layer, allowing for the detection of peeling through changes in capacitance sensed as voltage output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If layer peeling occurs in the stack structure, then heat conduction is disturbed at the peeled portion, but the electronic module structure remains intact
Solution Approach 1:
The patent applies preliminary action by incorporating a sense electrode and capacitance-to-voltage converter before peeling occurs. The system continuously monitors capacitance changes between the sense electrode and specified conductor through the insulating layer, detecting peeling at its earliest stages. This allows heat conduction issues to be identified before they significantly compromise reliability, enabling preventive maintenance or system shutdown.
Solution Approach 2:
The patent uses an intermediary approach by introducing a sense electrode and capacitance-to-voltage converter as intermediary components between the specified conductor and the external monitoring system. The sense electrode forms a capacitance through the insulating layer with the specified conductor, and the capacitance-to-voltage converter transforms these capacitance changes into measurable voltage signals. This intermediary measurement system enables indirect detection of peeling without directly interfering with the heat conduction path.
2Measurement precision
If a sense electrode and capacitance-to-voltage converter are added to detect peeling, then peeling detection capability is improved, but device complexity increases
Solution Approach 1:
The patent applies universality by designing the sense electrode to serve multiple functions: it acts as both a capacitance sensor for peeling detection and maintains electrical connectivity within the module. The specified conductor also serves dual purposes as both a heat conduction path and one element of the capacitance sensing structure. This multi-functionality reduces the need for entirely separate sensing components, thereby limiting the increase in device complexity while maintaining measurement precision.
Solution Approach 2:
The patent employs self-service by utilizing the existing insulating layer between the sense electrode and specified conductor as the dielectric for capacitance sensing. The insulating layer, which is already present for electrical isolation and heat conduction, automatically serves as the capacitor dielectric without requiring additional materials or structures. This self-service approach eliminates the need for separate capacitor components, reducing device complexity while enabling precise peeling detection through capacitance changes.
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
Accurately senses peeling by monitoring voltage changes, enabling early detection of potential failures and improving heat dissipation by identifying and addressing peeling issues.
Implementation Method 1
The sense electrode is opposed to a portion of the specified conductor via the insulating layer, and forms a capacitance with the portion
Data Source
AI summary
Peeling in an electronic module is sensed. An electronic module according to the present invention includes a specified conductor, an insulating layer, a wiring layer, and a capacitance-to-voltage converter. The wiring layer includes a sense electrode. The capacitance-to-voltage converter is connected to the sense electrode. The sense electrode is opposed to a portion of the specified conductor via the insulating layer, and forms a capacitance with the portion. The capacitance-to-voltage converter is configured to output a voltage according to the capacitance.