3D Capacitor with Anodic Oxide Holes for High Density
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Solution Overview
Problem
Current capacitors face challenges in achieving high capacitance relative to their size, particularly as they are miniaturized, due to increased complexity and process difficulties in manufacturing multi-layer ceramic capacitors with smaller dimensions.
Innovation Solution
A three-dimensional capacitor design utilizing an anodic oxide film with vertically arranged holes and conductors, where the first and second electrode layers are electrically connected to the conductors and separated from each other, allowing for high-density conductor arrangement and efficient electric current supply, thereby achieving high capacitance relative to size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If multi-layer ceramic capacitors are miniaturized, then capacitor size is reduced, but manufacturing complexity increases
Solution Approach 1:
The patent transitions from planar multi-layer stacking to a three-dimensional vertical structure with holes extending through the capacitor body. Conductors are arranged vertically within holes rather than in horizontal layers, fundamentally changing the spatial dimension of conductor arrangement from 2D to 3D, thereby achieving miniaturization without proportionally increasing manufacturing complexity
Solution Approach 2:
The capacitor employs a porous insulating material structure with vertically extending holes that penetrate through the insulating layer. These holes serve as conduits for conductors while the porous structure maintains electrical insulation, enabling compact vertical integration of multiple conductors without requiring complex multi-layer stacking processes
2Quantity of substance
If the distance between electrodes decreases, then capacitance increases, but manufacturing difficulty increases
Solution Approach 1:
Instead of reducing horizontal electrode spacing, the patent achieves high capacitance by extending conductors vertically through the insulating material. The effective electrode area is increased in the vertical dimension, allowing capacitance enhancement without requiring extremely small horizontal spacing that would be difficult to manufacture
Solution Approach 2:
Multiple conductors are nested vertically within the porous insulating structure, with each conductor positioned in its own hole. This nested arrangement allows multiple capacitive elements to be integrated within a compact volume without requiring precise lateral positioning, simplifying the manufacturing process while maintaining high capacitance
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
This design enables easy manufacturing of capacitors with high capacitance and compact size by leveraging the insulating properties of the anodic oxide film and high-density conductor arrangement, facilitating efficient electric current flow.
Implementation Method 1
an anodic oxide film formed of anodizable metal and having a plurality of holes formed therein in a vertical direction
Data Source
AI summary
Provided is a three-dimensional (3D) capacitor including conductors formed at a high density inside holes of an anodic oxide film, and a first electrode layer and a second electrode layer electrically connected to the conductors. Thus, a high capacitance relative to a size of the 3D capacitor may be easily achieved.