Vertical Electrical Device With Nested Coaxial Structure
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Solution Overview
Problem
Traditional via conductors in 3D architectures face limitations in high frequency performance due to insufficient isolation and signal transmission characteristics, which restricts their application in high-frequency operations and capacitive circuit components, especially in electronic imaging and RF filters.
Innovation Solution
A vertical electrical device is designed with an inner and outer electrically conductive layer surrounded by an insulative material, optimized for high frequency isolation and radio frequency properties, allowing it to function as a shielded conductor or coaxial capacitor, enabling improved signal transmission and reduced die area requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional via conductors are used in 3D architectures, then device integration is achieved, but high frequency performance deteriorates due to insufficient isolation and signal transmission characteristics
Solution Approach 1:
The patent implements a nested coaxial structure where an inner conductor is surrounded by an insulator layer, which is in turn surrounded by an outer conductor. This nested configuration provides superior electromagnetic isolation and signal transmission characteristics compared to traditional via conductors, enabling high frequency operation while maintaining 3D integration capability
Solution Approach 2:
The patent employs composite material structure combining conductive materials (inner and outer conductors) with insulating materials (dielectric layer) to create a via structure that simultaneously provides electrical connection, electromagnetic shielding, and signal transmission. This composite approach resolves the contradiction by integrating multiple functions that traditional single-material via conductors cannot achieve
2Ease of manufacture
If planar capacitor structures are used, then circuit functionality is achieved, but die area increases
Solution Approach 1:
The patent transitions from planar (2D) capacitor structures to vertical (3D) capacitor structures by stacking conductive and insulating layers in the vertical dimension. This dimensional change allows the capacitor to achieve the required capacitance value with significantly reduced die area, as the capacitance is generated through vertical layering rather than lateral expansion
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 device enhances high-frequency performance by minimizing transmission loss, reflection, and capacitive coupling, while reducing die area and cost, thus enabling more flexible and efficient design in 3D integrated circuits and electronic imaging applications.
Implementation Method 1
An electrically insulative material is disposed between the inner and outer layers... minimizing transmission loss, reflection, and capacitive coupling
Implementation Method 2
function as a shielded conductor or coaxial capacitor, enabling improved signal transmission
Data Source
AI summary
A vertical electrical device includes a region in a substrate extending from a surface of the substrate, the region having an inner wall and an outer wall circumscribing the inner wall. An inner electrically conductive layer is disposed on the inner wall and an outer electrically conductive layer is disposed on the outer wall, with an electrically insulative material disposed between the inner and outer layers. An electrical conductor in the substrate is bounded by the inner electrically conductive layer.