Interconnect Air-Gap Structure for IC Heat Dissipation
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Solution Overview
Problem
The heat generated by operating semiconductor integrated circuits (ICs) affects their quality, and existing technologies have not effectively addressed this issue through material selection or structural adjustments.
Innovation Solution
The formation of an electronic device with interconnects that include air gaps and insulating layers with higher thermal conductivity than the interconnects, allowing for efficient heat dissipation and reduced signal interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If traditional solid interconnect structures are used, then structural simplicity is maintained, but heat dissipation efficiency is insufficient
Solution Approach 1:
The patent introduces air gaps (porous structure) between adjacent interconnects to enhance heat dissipation. The air gaps create additional thermal pathways and reduce heat accumulation in dense interconnect regions, directly addressing the heat dissipation efficiency issue while adding structural complexity.
Solution Approach 2:
The patent employs a composite structure combining conductive interconnect materials with insulating materials filled in the air gaps. This composite approach allows simultaneous achievement of electrical connectivity, thermal management, and structural integrity, resolving the contradiction between heat dissipation and structural simplicity.
2Temperature
If air gaps are introduced between interconnects, then heat dissipation efficiency is improved, but manufacturing complexity increases
Solution Approach 1:
The patent forms the air gaps and fills them with insulating materials during the interconnect formation process itself, before subsequent processing steps. This preliminary action integrates thermal management features into the standard fabrication flow, reducing the need for additional manufacturing steps and mitigating the increase in manufacturing complexity.
3Temperature
If insulating layers with higher thermal conductivity are used, then heat dissipation is improved, but material selection constraints increase
Solution Approach 1:
The patent applies high thermal conductivity insulating materials specifically in regions where heat dissipation is most critical (between adjacent interconnects), while other insulating layers may use conventional materials. This localized approach optimizes thermal performance where needed without imposing material constraints across the entire device structure.
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 solution improves the electrical performance and heat dissipation efficiency of ICs by using air gaps and high thermal conductivity insulating layers, enhancing the quality and functionality of semiconductor devices.
Implementation Method 1
an insulating layer laterally between an upper portion of the first interconnect and an upper portion of the second interconnect... insulating layers with higher thermal conductivity than the interconnects, allowing for efficient heat dissipation
Data Source
AI summary
An electronic device including a first interconnect, a second interconnect, and an insulating layer is provided. A lower portion of the first interconnect is laterally spaced apart from a lower portion of the second interconnect by an air gap. The insulating layer is disposed laterally between an upper portion of the first interconnect and an upper portion of the second interconnect.