Frustum-Shaped Sleeve for Micromechanical Pressure Sensor Protection
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Solution Overview
Problem
Conventional micromechanical pressure sensor systems face challenges in miniaturization and integration into mobile terminals due to space constraints and protection requirements, particularly in second-level packaging, where components need to be both compact and protected from environmental influences.
Innovation Solution
A micromechanical pressure sensor system is designed with a substrate, a pressure sensor component, and an essentially hollow frustum-shaped sleeve structure that surrounds the component laterally, featuring a circumferential groove or gel filling to provide a seal and protect against corrosion and damage, with optional closure structures and sealing materials for gas-tight connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If miniaturization is pursued to reduce footprint, then integration into mobile terminals is improved, but protection from environmental influences becomes more difficult
Solution Approach 1:
The pressure sensor component is nested within the hollow frustum-shaped sleeve structure, which provides protection while maintaining compact dimensions. The sleeve acts as a protective container that shields the sensor from environmental influences without significantly increasing the overall footprint.
Solution Approach 2:
The hollow frustum-shaped sleeve structure serves as a protective shell that encloses the pressure sensor component. This shell structure provides mechanical protection and environmental shielding while maintaining a compact form factor suitable for miniaturized applications.
2Volume of moving object
If compact packaging is implemented, then space-saving is improved, but second-level packaging complexity increases
Solution Approach 1:
The first-level packaging (hollow frustum-shaped sleeve structure) and second-level packaging (housing with sealing flange) are merged into an integrated structure. The sealing flange is directly formed on the sleeve structure, eliminating the need for separate packaging components and simplifying the overall assembly process.
Solution Approach 2:
The hollow frustum-shaped sleeve structure serves multiple functions: it provides mechanical protection for the sensor, acts as a mounting structure, and includes an integrated sealing flange for gas-tight connections. This multi-functionality reduces the number of separate components needed in the packaging system.
3Reliability
If sealing structures are added for gas-tight connections, then protection is improved, but manufacturing complexity increases
Solution Approach 1:
The sealing flange is merged with the hollow frustum-shaped sleeve structure, forming an integrated component. This integration eliminates the need for separate sealing elements and simplifies the manufacturing process, as the sealing structure is produced as part of the main component rather than as an additional assembly step.
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 design enables a compact, flat, and protected micromechanical pressure sensor system that effectively transmits pressure fluctuations while preventing damage from environmental influences, enhancing integration into mobile terminals and maintaining sensor accuracy.
Implementation Method 1
connecting the housing to the substrate and to the sleeve structure in a gas-tight manner with the aid of a sealing material in a sealing area
Implementation Method 2
The sleeve structure may also be referred to as a sleeve or a sensor sleeve... which surrounds the pressure sensor component at least laterally
Data Source
AI summary
A micromechanical pressure sensor system, including: a substrate; a pressure sensor component connected to the substrate; and an essentially hollow frustum-shaped sleeve structure, which is connected to the substrate, which surrounds the pressure sensor component at least laterally and which has an opening at a side of the sleeve structure facing away from the substrate.