Multilayer Capacitor Inclined Electrodes for Thin High Capacitance
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Solution Overview
Problem
There is an increasing demand for thinner multilayer capacitors to accommodate the trend of smaller and thinner electronic devices, while maintaining high capacitance and ease of mounting.
Innovation Solution
A multilayer capacitor design with first and second internal electrodes stacked and inclined at specific angles, connected to external electrodes, and manufactured using a shadow mask deposition process to achieve a thinner structure with effective short-circuiting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the thickness of the multilayer capacitor is reduced to meet miniaturization demands, then the capacitor becomes thinner and more suitable for small electronic devices, but the capacitance and electrical connectivity may be compromised
Solution Approach 1:
The internal electrodes are designed with asymmetric inclined surfaces rather than parallel flat surfaces. The first internal electrode has an upper surface inclined downward from the first external electrode toward the second external electrode, while the second internal electrode has a lower surface inclined upward from the second external electrode toward the first external electrode. This asymmetric configuration allows the electrodes to be point-symmetrical to each other, creating effective short-circuiting paths that maintain electrical connectivity while reducing the overall thickness of the capacitor.
Solution Approach 2:
The patent transitions from traditional parallel plate electrode geometry to inclined surfaces that create three-dimensional short-circuiting paths. By introducing inclination angles and point-symmetry relationships between electrodes, the design utilizes spatial dimensionality to achieve effective electrical connectivity without increasing the thickness dimension, thereby maintaining capacitance performance in a thinner profile.
2Reliability
If inclined surfaces are introduced to improve electrical connectivity and reduce thickness, then the capacitor achieves better short-circuiting and reduced profile, but the manufacturing precision and complexity increase
Solution Approach 1:
The asymmetric inclined surface design creates point-symmetrical relationships between the first and second internal electrodes. This symmetry provides a clear geometric reference for manufacturing, where each electrode's inclination is the mirror image of the other, simplifying the manufacturing process by providing a repeatable pattern rather than requiring independent precision control for each surface.
Solution Approach 2:
The shadow mask is designed and positioned in advance to define the inclined surfaces of the internal electrodes during the deposition process. By pre-configuring the shadow mask with the appropriate geometry and positioning it correctly before deposition, the complex inclined surfaces are formed in a single step, avoiding the need for subsequent precision machining or adjustment operations.
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 maintains a smaller thickness while ensuring effective electrical connections and short-circuiting, allowing for high capacitance and ease of integration into electronic devices.
Implementation Method 1
forming a first internal electrode having an inclination in at least a partial region thereof by disposing a shadow mask having a shield region and an open region, which are arranged in front and back, to be vertically aligned on a top of a substrate, and then performing a deposition process of the first internal electrode while relatively moving the shadow mask with respect to the substrate forward or backward
Data Source
AI summary
A multilayer capacitor includes: a body including a dielectric layer, and first and second internal electrodes stacked on each other in a thickness direction of the capacitor while being spaced apart from each other with the dielectric layer interposed therebetween; a first external electrode connected to the first internal electrode; and a second external electrode spaced apart from the first external electrode in a length direction of the capacitor that is perpendicular to the thickness direction, and connected to the second internal electrode. One of the first internal electrode and the second internal electrode has a horizontal plane perpendicular to the thickness direction and an inclined plane inclined with respect to the horizontal plane in at least a partial region thereof.