Micromechanical Component with Stable Frame Structure
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Solution Overview
Problem
Existing micromechanical components, such as micro-mirror arrays, face challenges in being densely packed without mechanical stress on sensitive surfaces and require precise positioning to balance surface area and damage risk, while also needing versatile and robust designs for efficient operation.
Innovation Solution
A micromechanical component with a stable frame structure and connected printed conductors allows for separation without stressing the active surface, featuring adjustable mirror elements with a reflective surface, reduced sensitivity, and enhanced stability through a second substrate with a control ASIC and ferromagnetic assembly elements for easy mounting and control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple micro-mirror arrays are placed closely alongside one another to cover large surfaces, then the productivity and surface coverage are improved, but the risk of mechanical stress on sensitive mirror surfaces increases
Solution Approach 1:
The component is segmented into multiple identical or similar micro-mirror arrays that can be produced in a wafer composite and then separated. Each array is isolated with spacing structures that prevent mechanical stress during handling and installation, allowing high-density placement while maintaining individual integrity of each sensitive mirror surface.
Solution Approach 2:
A stable frame structure acts as an intermediary between the sensitive mirror surfaces and the external environment. This frame provides mechanical support and protection during transport and installation, enabling close placement of multiple arrays without transmitting mechanical stress to the delicate mirror elements.
2Productivity
If the active surface of mirror elements is made as large as possible, then the efficiency and productivity are improved, but the risk of lateral damage increases
Solution Approach 1:
The design applies local quality by providing enhanced protection specifically at the edges and corners of large mirror elements, where lateral damage is most likely to occur. The stable frame structure and spacing elements are positioned to protect vulnerable areas while maintaining large active surfaces for optimal optical efficiency.
3Ease of manufacture
If printed conductors or contact elements are placed on the edges of the substrate, then electrical connection is achieved, but the sensitivity of the component increases
Solution Approach 1:
The electrical connection approach is moved from the edge dimension to the interior dimension of the substrate. Printed conductors are embedded within the substrate material rather than placed on edges, eliminating exposure to harmful environmental factors while maintaining electrical connectivity to the mirror elements.
4Productivity
If spacing between adjacent mirror elements is reduced to increase reflective surface area, then the productivity and efficiency are improved, but the manufacturing precision requirements increase
Solution Approach 1:
The stable frame structure and spacing elements are designed and positioned in advance during the wafer composite production process. This preliminary arrangement of support structures allows for reduced spacing between mirror elements while maintaining manufacturing feasibility, as the frame provides reference points for precise positioning during assembly.
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 high-density, efficient, and reliable micro-mirror array with improved stability and reduced risk of lateral damage, allowing for precise positioning and versatile use while maintaining a large active surface area.
Implementation Method 1
at least one ferromagnetic assembly element is situated on the second rear side of the second substrate. This can make installation of the component easier, and can enable a stable mounting of the component on a magnetic foundation, for example a structured magnetic bearer substrate.
Data Source
AI summary
A micromechanical component is described having a first substrate that has a first front side a first rear side facing away from the first front side; first printed conductors that are fashioned on the first front side of the first substrate; a plurality of actuator devices that are fashioned on and/or in the first substrate and that are electrically bonded to the first printed conductors, the actuator devices each having at least one stator electrode and each having at least one actuator electrode that works together with the at least one stator electrode, which are fashioned such that a voltage can be applied between the actuator electrode and cooperating stator electrode in such a way that the actuator electrode can be displaced relative to the stator electrode.