Semiconductor Nano-Gaps for Electrical Properties
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Solution Overview
Problem
Semiconductor devices face challenges in maintaining electrical properties as feature sizes decrease, with damaged or poorly performing layers affecting device efficiency and requiring improved dielectric components for enhanced performance.
Innovation Solution
A semiconductor device with nano-gaps is developed, featuring a substrate, capping layers, dielectric layers, and conducting lines, where nano-gaps are formed between adjacent conducting lines to improve electrical properties, and a method involving directed self-assembly and etching is used to create these gaps, simplifying the manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If feature size is decreased to improve device density and integration, then device density and integration are improved, but electrical properties deteriorate due to damaged or poor layers
Solution Approach 1:
The patent introduces nano-gaps (porous structures) into the dielectric layers to create a three-dimensional network that enhances electrical properties while maintaining small feature sizes. The porous structure provides additional conduction paths and improves charge transport, thereby improving electrical properties without sacrificing device density.
Solution Approach 2:
The patent creates a composite structure by combining dielectric layers with embedded nano-gaps, forming a hybrid material system that exhibits both the insulating properties of dielectrics and the enhanced electrical conductivity provided by the nano-gap network, thus resolving the contradiction between density and electrical performance.
2Ease of manufacture
If conventional dielectric structures are used to simplify manufacturing, then manufacturing process is simple, but electrical performance is insufficient
Solution Approach 1:
The patent employs self-aligned fabrication processes where the nano-gaps are automatically positioned relative to the conducting lines through sequential deposition and patterning steps. This self-alignment mechanism eliminates the need for additional alignment procedures, maintaining manufacturing simplicity while achieving the enhanced electrical performance of nano-gapped structures.
3Reliability
If nano-gaps are formed between conducting lines to improve electrical properties, then programming speed increases and power consumption decreases, but manufacturing precision requirements increase
Solution Approach 1:
The patent performs preliminary patterning of the dielectric layers before forming the conducting lines, establishing the nano-gap positions in advance. This preliminary action allows subsequent steps to proceed with standard precision requirements, as the critical nano-gap locations are already defined, thereby reducing the overall manufacturing precision burden while achieving improved electrical properties.
Data Source
AI summary
A semiconductor device and a method for manufacturing the same are provided. A semiconductor device includes a substrate, a first capping layer formed above the substrate, a first dielectric layer formed on the first capping layer; a second capping layer formed on the first dielectric layer; a second dielectric layer formed on the second capping layer; a plurality of conducting lines separately formed on the substrate; a third capping layer formed on the conducting lines and the second dielectric layer; and several nano-gaps formed between the adjacent conducting lines, and the nano-gaps being formed in the second dielectric layer, or further extending to the second capping layer or to the first capping layer. The nano-gaps partially open one of the second and first dielectric layers, or the nano-gaps expose the first capping layer or the second capping layer.