Resistor Between Self-Aligned Gate Edges
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Solution Overview
Problem
As semiconductor devices scale down, traditional resistor placement above the device layer introduces topography issues, leading to patterning challenges and scalability problems, while also limiting thermal conduction and increasing routing overhead.
Innovation Solution
Integrating resistors between self-aligned gate edge structures, using isolation material for the resistor placement, which allows for improved thermal conduction, reduced defect rates, and lower temperature coefficients, and minimizes routing needs by being closer to the substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If resistors are placed above the device layer in traditional locations, then routing is simplified, but topography issues arise leading to patterning challenges and scalability problems
Solution Approach 1:
The patent moves resistors from the traditional above-device-layer placement to a new location between self-aligned gate edge structures, effectively changing the spatial dimension and layer arrangement. This dimensional repositioning eliminates topography issues while maintaining routing simplicity, as the resistors are integrated into the gate edge isolation structures rather than being added as separate above-layer components.
2Loss of energy
If resistors are placed above the device layer, then routing overhead is reduced, but thermal conduction is limited
Solution Approach 1:
The patent merges the resistor structures with the self-aligned gate edge isolation structures, creating an integrated component that serves dual purposes. The resistors are formed within the same structural framework as the gate edges, allowing thermal conduction pathways to be maintained through the substrate while eliminating the need for separate routing layers above the device layer.
3Reliability
If traditional resistor placement is used, then manufacturing process is simpler, but defect rates increase and temperature coefficients are higher
Solution Approach 1:
The patent applies local quality by placing resistors in a specific location between self-aligned gate edge structures where the physical and thermal environment is optimized. This localized placement provides better thermal conduction and stability, resulting in lower temperature coefficients and reduced defect rates, while the self-aligned nature of the gate edge structures maintains manufacturing simplicity through existing alignment processes.
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 approach enables defect-free resistor formation with low resistivity variation, enhanced thermal management, and reduced routing complexity, addressing scalability and thermal issues in highly scaled semiconductor devices.
Implementation Method 1
a first structure centered between the first and second semiconductor fins, the first structure comprising isolation material
Implementation Method 2
Integrating resistors between self-aligned gate edge structures, using isolation material for the resistor placement, which allows for improved thermal conduction
Data Source
AI summary
Techniques are disclosed for forming semiconductor structures including resistors between gates on self-aligned gate edge architecture. A semiconductor structure includes a first semiconductor fin extending in a first direction, and a second semiconductor fin adjacent to the first semiconductor fin, extending in the first direction. A first gate structure is disposed proximal to a first end of the first semiconductor fin and over the first semiconductor fin in a second direction, orthogonal to the first direction, and a second gate structure is disposed proximal to a second end of the first semiconductor fin and over the first semiconductor fin in the second direction. A first structure comprising isolation material is centered between the first and second semiconductor fins. A second structure comprising resistive material is disposed in the first structure, the second structure extending at least between the first gate structure and the second gate structure.