Semiconductor Detection Wiring for Solder Defect Identification
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Solution Overview
Problem
Existing semiconductor devices face challenges in detecting and preventing solder overflow or misplacement, which can lead to faulty connections and operational malfunctions, as current designs lack effective mechanisms for early detection and compensation.
Innovation Solution
Incorporating a detection wiring with high electrical resistance surrounding the active region of the semiconductor device chip, which is electrically isolated from the chip but connected to the substrate, allowing for the detection of solder overflow or misplacement through a leakage current test, thereby enabling early detection and potential rejection of faulty devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a detection wiring is added to detect solder overflow or misplacement, then the reliability of the semiconductor device is improved, but the device complexity increases
Solution Approach 1:
The detection wiring is merged with the substrate structure, forming an integrated design where the detection function is incorporated into the existing substrate rather than being added as a separate component. This reduces overall device complexity while maintaining detection capability.
Solution Approach 2:
The detection wiring acts as an intermediary element between the solder joint and the testing system. It provides a controlled electrical path that enables detection of solder defects without requiring direct access to the solder joint itself, simplifying the testing process.
2Measurement precision
If the detection wiring is electrically isolated from the semiconductor device chip, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The electrical system is segmented into distinct isolated components: the semiconductor device chip, the detection wiring, and the substrate. This segmentation allows independent testing of each component and eliminates electrical interference, improving measurement precision.
Solution Approach 2:
The detection function is extracted from the semiconductor device chip itself and placed on the substrate. This separation removes the detection circuitry from the active device, preventing electrical interference and enabling more accurate measurements of the device under test.
3Manufacturing precision
If a leakage current test is performed to detect solder defects, then the manufacturing precision is improved, but the productivity decreases
Solution Approach 1:
The detection wiring is pre-configured on the substrate during manufacturing, with electrical connections established before the semiconductor device is installed. This preliminary preparation enables immediate testing upon device installation, reducing overall testing time.
Solution Approach 2:
The physical inspection of solder joints is replaced with an electrical leakage current test. This substitution allows for automated, rapid testing that is both precise and efficient, improving productivity while maintaining high detection accuracy.
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
The solution effectively detects solder overflow or misplacement, allowing for the identification of faulty devices before normal operation, reducing the risk of malfunction and enabling efficient testing processes, with a leakage current through the detection wiring being significantly lower than the diode leakage current at operation temperatures.
Implementation Method 1
the detection wiring and the substrate are electrically connected with each other via a connection path having a high electrical resistance
Implementation Method 2
allowing for the detection of solder overflow or misplacement through a leakage current test
Data Source
AI summary
Various embodiments provide a semiconductor device, wherein the semiconductor device comprises a semiconductor device chip formed at a substrate, wherein the semiconductor device chip comprises an active region formed in a center of the substrate and a boundary region free of active components of the semiconductor device chip; and a detection wiring arranged in the boundary region of the substrate and at least partially surrounding the active region, wherein the detection wiring and the semiconductor device chip are electrically isolated from each other; and wherein the detection wiring and the substrate are electrically connected with each other via a connection having a high electrical resistance.