Capacitor Structure With Segmented Electrodes For Integration Density
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current semiconductor devices with capacitors, such as vertical-parallel-plate (VPP) capacitors, face challenges in optimizing capacitor design for efficient capacitance without increasing the overall device width, which affects performance and integration density.
Innovation Solution
The design incorporates a capacitor structure with conductive strips having wider and narrower portions, electrically coupled by conductive vias, allowing for alternating plate arrangements that reduce the total width while maintaining or enhancing capacitance, utilizing high-k dielectric materials and varying strip configurations to optimize electrical coupling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional capacitor structures are used, then capacitance is achieved, but device width increases reducing integration density
Solution Approach 1:
The capacitor structure is divided into multiple segments with alternating wider and narrower portions along the length of conductive strips. This segmentation allows the capacitor to achieve the required capacitance through distributed capacitance across multiple segments rather than requiring a single large structure, thereby reducing the overall device width while maintaining integration density
Solution Approach 2:
The invention transitions from a two-dimensional planar capacitor layout to a three-dimensional structure by stacking multiple conductive strips at different levels and connecting them through conductive vias. This vertical dimensionality change allows capacitance to be accumulated through multiple layers rather than expanding horizontally, thus reducing device width while maintaining or enhancing capacitance
2Quantity of substance
If device width is reduced, then integration density improves, but capacitance may be compromised
Solution Approach 1:
The capacitor structure employs nested conductive strips where wider portions are positioned at different vertical levels and connected through conductive vias. This nesting arrangement allows multiple capacitance-contributing elements to be packed within a smaller horizontal footprint, thereby improving integration density while maintaining or enhancing total capacitance
Solution Approach 2:
The invention uses composite structures combining conductive materials (for strips and vias) with dielectric materials (for insulation and spacing). This composite approach enables optimized electrical coupling between nested conductive strips while maintaining compact dimensions, thus achieving high integration density without compromising capacitance
3Length of stationary object
If alternating plate arrangements are used, then total width is reduced, but structural complexity increases
Solution Approach 1:
The alternating plate arrangement features local variations in conductive strip width (wider and narrower portions) at specific positions along the structure. This local quality differentiation allows the capacitor to achieve compact dimensions through strategic placement of capacitance-contributing wider portions while using narrower portions for spacing and electrical coupling, thereby reducing total width without requiring uniform complexity throughout the entire structure
Data Source
AI summary
One or more embodiments relate to a capacitor structure comprising a first and second capacitor electrode. The first electrode may include a conductive strip having at least one wider portion and at least one narrower portion. The second electrode may include a conductive strip having at least one wider portion and at least one narrower portion.