Laminated Electronic Component Vertical Capacitor Stacking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Laminated ceramic capacitors experience volume increases unrelated to capacitance increases and high equivalent series inductance (ESL) when stacked, which are undesirable in electronic components.
Innovation Solution
A laminated electronic component design featuring a first and second capacitor electrically connected to form a current loop in a plane perpendicular to the mounting surface, reducing the size of the current loop and thus the ESL, by arranging the capacitors vertically and connecting them through their upper and lower surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If laminated ceramic capacitors are stacked to increase capacitance, then the total capacitance increases, but the volume increases irrelevantly to capacitance increase
Solution Approach 1:
The patent transitions from horizontal stacking of capacitors to vertical stacking, where capacitors are arranged in the thickness direction rather than lateral direction. This dimensional change allows for more efficient space utilization and reduces the planar footprint while maintaining capacitance scaling capabilities.
Solution Approach 2:
The patent merges multiple capacitor units into a single laminated structure where internal electrodes are formed within a common ceramic body. This integration eliminates the need for separate capacitor packages and interconnection structures, thereby reducing overall volume while maintaining total capacitance.
2Quantity of substance
If laminated ceramic capacitors are stacked, then capacitance increases, but equivalent series inductance (ESL) increases
Solution Approach 1:
The patent forms current loops in the thickness direction (vertical dimension) rather than in the planar direction. By arranging internal electrodes to create vertically-oriented current loops, the effective area of the loops is minimized, which directly reduces the equivalent series inductance according to electromagnetic principles.
Solution Approach 2:
The patent optimizes the local arrangement of internal electrodes within the ceramic body to create compact current loops. The internal electrodes are positioned and shaped to minimize loop area while maintaining capacitance function, thereby locally optimizing the inductive characteristics of each capacitor unit.
Data Source
AI summary
A laminated electronic component includes a first capacitor including a first ceramic body, first external electrodes disposed on upper and lower surfaces of the first ceramic body, and second external electrodes disposed apart from the first external electrodes on the upper and lower surfaces of the first ceramic body, and a second capacitor including a second ceramic body, a third external electrode disposed on a lower surface of the second ceramic body, and a fourth external electrode disposed apart from the third external electrode on the lower surface of the second ceramic body, and disposed on the first capacitor and electrically connected to the first capacitor. A current loop passing through the upper surface of the first ceramic body and the lower surface of the second ceramic body is formed.