MEMS Diaphragm Unit Configuration via Segmented Piezoelectric Transducers
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Solution Overview
Problem
The existing manufacturing process for MEMS transducers lacks flexibility in configuring diaphragm units, limiting the variety of shapes and configurations possible for MEMS transducers.
Innovation Solution
A process where multiple piezoelectric transducer units, each with electrode and piezoelectric layers, are formed on a carrier, allowing for separation and subsequent arbitrary arrangement on a diaphragm unit, enabling a wide range of diaphragm unit designs and configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple piezoelectric transducer units are formed on a carrier and then separated for arbitrary arrangement, then the adaptability and versatility of diaphragm unit configurations is improved, but the device complexity and manufacturing process complexity increase
Solution Approach 1:
The manufacturing process is segmented into distinct stages: first forming multiple independent piezoelectric transducer units on a carrier, then separating these units, and finally arranging them in arbitrary configurations on diaphragms. This segmentation enables configuration flexibility while managing process complexity through standardized intermediate steps.
Solution Approach 2:
Multiple piezoelectric transducer units are preliminarily formed on a carrier before final assembly. This preliminary action allows standardization of transducer unit production and enables flexible subsequent arrangement without repeating complex formation processes for each configuration.
2Productivity
If transducer units are mass-produced on a carrier and then separated, then the productivity increases, but the manufacturing precision and alignment accuracy may deteriorate
Solution Approach 1:
A carrier serves as an intermediary substrate for mass-producing and temporarily holding multiple transducer units. This intermediary enables high-volume production while maintaining precision through the carrier's structured support, and facilitates subsequent separation and reassembly with controlled alignment.
Solution Approach 2:
The carrier provides localized support and positioning features at specific locations where transducer units are formed. This local quality control maintains manufacturing precision during mass production, while allowing flexible rearrangement after separation by using standardized interface features.
3Ease of manufacture
If transducer units are formed and separated from the carrier, then the ease of manufacture and cost reduction is improved, but the reliability and structural stability may worsen
Solution Approach 1:
The system is segmented into modular transducer units that can be independently manufactured and tested before final assembly. This segmentation improves ease of manufacture through standardized production and simplifies quality control, while maintaining reliability through pre-assembly validation of individual units.
Solution Approach 2:
The separated transducer units are designed with universal interfaces and standardized dimensions, enabling them to be reliably assembled into various diaphragm configurations. This universality maintains structural stability across different applications while improving manufacturing efficiency through reuse of validated unit designs.
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 approach allows for the mass production of transducer units that can be flexibly arranged on diaphragm units, simplifying the manufacturing process, enabling a broad spectrum of shapes and configurations, and reducing manufacturing costs.
Implementation Method 1
The piezoelectric layer deflects when it is acted upon by an electrical signal. The piezoelectric layer is made of a piezoelectric material.
Implementation Method 2
the piezoelectric layer generates an electrical signal when it is deflected itself
Data Source
AI summary
A process for manufacturing a diaphragm unit of a MEMS transducer that includes multiple piezoelectric transducer units, each of the multiple piezoelectric transducer units including at least one electrode layer and at least one piezoelectric layer formed on a carrier includes the step of removing the transducer units from the carrier. At least one of the transducer units that has been removed from the carrier is arranged on a diaphragm and connected to the diaphragm. Moreover, a diaphragm unit made according to the process includes a diaphragm and multiple piezoelectric transducer units arranged on and connected to the diaphragm. Each of the multiple piezoelectric transducer units includes at least one electrode layer and at least one piezoelectric layer formed on a carrier.