Semiconductor Electrode Support Patterns for Capacitance and Stability
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Solution Overview
Problem
In semiconductor devices, the challenge lies in increasing capacitance in a limited area while maintaining structural integrity of high-aspect-ratio lower electrodes, which are prone to toppling due to increased thickness of mold layers.
Innovation Solution
The formation of first and second supporting patterns at different levels on the lower electrodes, with specific opening configurations, provides structural stability and allows for increased capacitance by optimizing the vertical distance and thickness ratios between these patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the thickness of mold layers is increased to increase capacitance, then the capacitance increases, but the lower electrodes become prone to toppling
Solution Approach 1:
The supporting structure is divided into multiple levels (first supporting pattern at lower level, second supporting pattern at upper level) to provide distributed support along the height of the lower electrode, preventing toppling while allowing increased capacitance
Solution Approach 2:
Supporting patterns are introduced as intermediary structures between the lower electrode and the mold layers, providing mechanical support to prevent toppling while allowing the mold layers to maintain their capacitance-enhancing thickness
2Quantity of substance
If the surface area of lower electrode is increased to increase capacitance, then the capacitance increases, but the height of lower electrode increases making it more prone to toppling
Solution Approach 1:
The supporting structure is divided into multiple levels (first supporting pattern at lower level, second supporting pattern at upper level) to provide distributed support along the height of the lower electrode, preventing toppling while allowing increased capacitance
Solution Approach 2:
Support is provided not only at the base level but also at upper levels of the lower electrode, adding vertical dimension to the support structure to stabilize the electrode against toppling
Data Source
AI summary
Semiconductor devices are provided. Each of the semiconductor devices may include a plurality of electrodes. Moreover, each of the semiconductor devices may include a supporting pattern connected to sidewalls of the plurality of electrodes. Related methods of forming semiconductor devices are also provided. For example, the methods may include forming the supporting pattern before forming the plurality of electrodes.