MLCC External Electrode Recesses for Halation-Free Inspection
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Solution Overview
Problem
Multilayer ceramic capacitors with reduced thickness face issues of reduced strength and reflection luminance leading to halation during visual inspection, affecting accurate recognition.
Innovation Solution
A multilayer ceramic capacitor design with recesses on external electrodes to reduce surface flatness, minimizing light reflection and enhancing accurate visual inspection, while maintaining strength and capacitance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the thickness of the multilayer ceramic capacitor is reduced, then the size of the electronic device can be reduced, but the strength of the capacitor is reduced
Solution Approach 1:
The patent extends the external electrodes along the side surfaces of the multilayer body, utilizing the lateral dimension rather than increasing thickness. This allows the electrodes to provide structural reinforcement and improve connection strength without increasing the capacitor's thickness, thereby resolving the contradiction between miniaturization and strength maintenance.
2Shape
If the thickness of the multilayer ceramic capacitor is reduced, then the flatness of the external electrode is improved, but light reflection increases causing halation during visual inspection
Solution Approach 1:
The patent forms the external electrodes with a curved surface along the side surfaces of the multilayer body, replacing flat surfaces with curved geometries. This curvature reduces the reflectivity of light incident on the electrode surfaces, preventing halation during visual inspection while maintaining the thin profile and flat top/bottom surfaces needed for mounting.
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 design effectively reduces light reflection, preventing halation and ensuring accurate recognition, while maintaining strength and capacitance, even with reduced thickness.
Implementation Method 1
luminance of light reflected at the surface of the multilayer ceramic capacitor to be embedded in a board increases, which may lead to halation and failure in accurate recognition
Data Source
AI summary
A method for manufacturing a multilayer ceramic capacitor includes a multilayer body including layered ceramic layers and internal electrode layers, and an external electrode on a side surface of the multilayer body and connected to the internal electrode layers. A recess is provided in a surface of the external electrode on one side of opposing main surfaces of the multilayer ceramic capacitor.