Semiconductor Life Prediction Using dV/dt Recording
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is a need for semiconductor devices, such as power semiconductor devices, to have a prediction function for their life and degradation as they are used, which existing technologies have not adequately addressed.
Innovation Solution
A semiconductor device configuration that includes a major element with a first semiconductor region, electrodes, and a gate electrode, along with a recording element that records the maximum value of the change in voltage over time, allowing for the prediction of device life and degradation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a prediction function for device life and degradation is added to semiconductor devices, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent combines the life prediction function with the existing semiconductor device structure by integrating a recording element that monitors voltage changes into the main device. The recording element is electrically connected to the first electrode and gate electrode, allowing it to record operational data without requiring separate monitoring equipment. This merging approach adds prediction capability while minimizing additional complexity.
Solution Approach 2:
The semiconductor device performs self-diagnosis and self-monitoring through the integrated recording element that automatically records voltage change data during operation. The device monitors its own operational parameters and stores degradation information internally, eliminating the need for external monitoring systems and reducing overall system complexity.
2Measurement precision
If a recording element is added to record voltage changes, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent extracts only the essential measurement function needed for life prediction - recording the maximum value of voltage change rate (dV/dt) - rather than implementing comprehensive monitoring of all device parameters. This selective extraction focuses measurement precision on the critical degradation indicator while avoiding the complexity of monitoring unnecessary parameters.
Solution Approach 2:
The recording element specifically measures and records changes in voltage parameters (dV/dt) rather than absolute voltage values. By focusing on parameter changes and derivatives, the system achieves precise degradation measurement with simpler circuitry compared to comprehensive parameter monitoring.
Data Source
AI summary
A semiconductor device includes a major element including a first semiconductor region, a first electrode, a second electrode, a first gate electrode, and a first insulating member being positioned between the first gate electrode and the first semiconductor region, and a recording element electrically connected with the first electrode. The recording element records, as analog data, a maximum value of a change amount dV/dt of a voltage of the first electrode over time.