Semiconductor Storage Electrode Support Pattern Design
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Solution Overview
Problem
Semiconductor devices face challenges in reducing the size of cell capacitors while preventing deformation and improving resistivity characteristics, as smaller capacitors are prone to collapse during fabrication.
Innovation Solution
A semiconductor device design featuring a capacitor structure with a continuous support pattern that includes contact parts and a connection part, which are connected to the storage electrodes to prevent collapse and enhance resistivity, along with a storage dielectric layer and a plate electrode to improve performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the size of cell capacitors is decreased to reduce semiconductor device size, then the device size is reduced, but the storage electrodes become prone to deformation and collapse during fabrication
Solution Approach 1:
The support pattern is divided into multiple discrete support patterns, each individually supporting a storage electrode. This segmentation allows each support structure to be optimized for its specific location while collectively providing comprehensive support across the capacitor structure, preventing collapse of miniaturized electrodes.
Solution Approach 2:
The support pattern acts as an intermediary structure between the storage electrode and the substrate. This intermediate layer provides mechanical support and stabilization to the miniaturized storage electrodes during fabrication processes, enabling smaller capacitor sizes without compromising structural integrity.
2Volume of moving object
If the size of cell capacitors is decreased, then the device size is reduced, but the manufacturing precision required increases due to susceptibility to deformation
Solution Approach 1:
The support patterns are formed in advance before the storage electrodes are fully processed. This preliminary action provides pre-established mechanical support structures that prevent deformation during subsequent fabrication steps, reducing the precision requirements for later manufacturing operations.
Solution Approach 2:
The support patterns provide beforehand cushioning and mechanical protection to the miniaturized storage electrodes. This protective structure compensates for potential deformation forces during fabrication, allowing for reliable manufacturing of smaller capacitors without requiring excessively tight process control.
3Reliability
If a continuous support pattern is used to prevent storage electrode collapse, then structural stability is improved, but the device complexity increases
Solution Approach 1:
The continuous support pattern is segmented into multiple discrete support patterns. This segmentation reduces the overall complexity by breaking down a single complex continuous structure into simpler, repeatable discrete elements that can be manufactured using standard patterning processes.
Solution Approach 2:
Instead of using a uniform continuous support pattern throughout, discrete support patterns are placed locally at specific positions where storage electrodes require support. This local quality approach provides necessary stability only where needed, reducing overall device complexity while maintaining electrode stability.
Data Source
AI summary
A semiconductor device is provided. The semiconductor device includes first and second storage electrodes formed to be spaced apart from each other on a substrate, an insulating continuous support pattern connected to top surfaces of the first and second storage electrodes, a storage dielectric layer formed to cover the first and second storage electrodes and the continuous support pattern, and a plate electrode formed on the storage dielectric layer. The continuous support pattern includes a first contact part connected to the top surface of the first storage electrode, a second contact part connected to the top surface of the second storage electrode, and a connection part connecting the first and second contact parts with each other.