Dielectric Connector Protector for MEMS Over-Etching
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Solution Overview
Problem
During the manufacturing of microelectromechanical system (MEMS) devices, the anchors or connectors are often damaged due to over-etching, leading to unsatisfactory performance and reliability of the electromechanical devices.
Innovation Solution
The implementation of a dielectric material-based connector and protector structure, where the connector is positioned between substrates and protected by dielectric material protectors, including through-hole protectors, to prevent damage during the manufacturing process, ensuring effective anchoring and reliable performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional connector structures are used during manufacturing, then device complexity is reduced, but the connectors are damaged due to over-etching, leading to poor reliability
Solution Approach 1:
A dielectric protector is introduced as an intermediary element between the connector and the etching environment. This protector acts as a shield that prevents the etching solution from directly contacting and damaging the connector, thereby resolving the contradiction by adding a protective layer that improves reliability while maintaining manageable device complexity
Solution Approach 2:
The dielectric protector is formed before the connector structure is fully processed. This preliminary action ensures that the protector is already in place to prevent over-etching damage during subsequent manufacturing steps, addressing the reliability issue by proactively protecting the connector before damage can occur
2Manufacturing precision
If connector protection structures are added, then connector protection from over-etching is improved, but the manufacturing process becomes more complex
Solution Approach 1:
The dielectric protector formation process is merged with existing manufacturing processes. The protector is formed using standard dielectric deposition and patterning techniques that are already part of the fabrication workflow, thereby improving manufacturing precision for connector protection without significantly increasing overall process complexity
Solution Approach 2:
The dielectric protector is applied locally only where connector protection is needed, rather than uniformly across the entire device. This localized approach improves manufacturing precision by providing targeted protection while minimizing the added complexity to the overall manufacturing process
Data Source
AI summary
An electromechanical device may include a first substrate, a second substrate, a connector, and a protector. The connector may be formed of a first dielectric material and may be positioned between the first substrate and the second substrate. A first side of the connector may directly contact the first substrate. The protector may be formed of a second dielectric material and may directly contact a second side of the connector.