Capacitor Component With Vertical Connection Electrodes
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Solution Overview
Problem
Current multilayer ceramic capacitors face limitations in increasing capacitance due to challenges in enhancing the dielectric constant and reducing the thickness of dielectric layers, while also struggling with equivalent series inductance (ESL) and equivalent series resistance (ESR) characteristics, particularly in high-frequency applications, where a balance between miniaturization and preventing short-circuits is needed.
Innovation Solution
The capacitor component design includes alternately stacked internal electrodes with connection electrodes extending through the body, connected to lower electrodes, and a specific arrangement of plating layers and insulating layers to enhance the overlapping area and reduce ESL and ESR values, preventing short-circuits by maintaining a controlled distance between connection electrodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the number of dielectric layers and internal electrodes is increased by reducing thickness to achieve high capacitance, then capacitance is improved, but manufacturing difficulty increases due to current method limitations
Solution Approach 1:
The patent transitions from increasing capacitance through stacking more thin layers (vertical dimension) to increasing the overlapping area of internal electrodes in the horizontal plane (lateral dimension). By expanding the electrode overlap area rather than reducing layer thickness, the patent achieves high capacitance while avoiding the manufacturing difficulties associated with ultra-thin dielectric layers.
2Quantity of substance
If the overlapping area of internal electrodes is increased to achieve high capacitance, then capacitance is improved, but the mounting area and mounted height increase
Solution Approach 1:
Multiple internal electrodes with different polarities are nested alternately within the same vertical space, with each electrode overlapping with adjacent electrodes of opposite polarity. This nesting arrangement maximizes the overlapping area for high capacitance while keeping the horizontal footprint and mounting area compact, as all electrodes are contained within the same lateral boundaries.
Data Source
AI summary
A capacitor component includes a body with a plurality of first and second internal electrodes alternately stacked with dielectric layers interposed therebetween. First and second connection electrodes extend in a thickness direction of the body and are respectively connected to the first and second internal electrodes. First and second lower electrodes are on a lower surface of the body and are respectively connected to the first and second connection electrodes.