Thermally Deformable Beam Switch for CMOS Integration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current electrical-switching devices in integrated circuits, particularly those using MEMS technology, are difficult to integrate into standard CMOS technological streams and lack the ability to detect temperature thresholds and maintain a blocked state effectively.
Innovation Solution
An integrated circuit design featuring a thermally deformable assembly with a metallic beam and arms within a metallization level, capable of switching configurations based on temperature changes, allowing for the establishment or prohibition of an electrical link, and incorporating a conductive body to immobilize the beam, enabling detection of temperature thresholds and maintaining a blocked state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If MEMS technology is used for electrical-switching devices, then switching functionality is achieved, but integration into standard CMOS technological stream becomes difficult
Solution Approach 1:
The patent replaces the traditional MEMS mechanical switching structure with an electrical-field-based switching mechanism. The switching device uses an electrically conductive body that can be positioned between metallization levels through electrical field control rather than mechanical movement, thereby eliminating the need for complex MEMS fabrication processes and enabling integration into standard CMOS technological streams.
Solution Approach 2:
The invention transitions from a planar 2D switching structure to a 3D vertical arrangement where the electrically conductive body is positioned between first and second metallization levels. This vertical dimensionality allows the switching device to be integrated within the existing CMOS layer structure without requiring additional lateral space or complex lateral mechanical movements characteristic of MEMS devices.
2Reliability
If a blocked state is implemented in the switching device, then temperature threshold detection is enabled, but device structure becomes more complex
Solution Approach 1:
The electrically conductive body serves multiple functions: it acts as the switching element that establishes or prohibits electrical links between metallization levels, and simultaneously serves as the blocked state indicator for temperature threshold detection. This multi-functionality eliminates the need for separate detection mechanisms, thereby maintaining reliability while minimizing structural complexity.
Solution Approach 2:
The patent merges the switching function and the temperature detection function into a single integrated structure. The electrically conductive body that enables switching between states also provides the blocked state signal for temperature threshold detection, combining what could be separate functions into one unified element, thus reducing overall device complexity.
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
The solution allows for easy integration into CMOS streams without conventional MEMS technology, detects temperature rises or drops, and maintains a blocked state until reset, with minimal surface area impact, effectively managing electrical links and temperature thresholds.
Implementation Method 1
The first thermally deformable assembly has at least one first configuration at a first temperature and a second configuration when at least one is at a second temperature different from the first temperature
Data Source
AI summary
An integrated circuit, comprising an electrical-switching mechanical device in a housing having at least one first thermally deformable assembly including a beam held in at least two different locations by at least two arms secured to edges of the housing, the beam and the arms being metallic and situated within the same first metallization level and an electrically conductive body, wherein the said first thermally deformable assembly has at least one first configuration at a first temperature and a second configuration when at least one is at a second temperature different from the first temperature, wherein the beam is at a distance from the body in the first configuration and in contact with the said body and immobilized by the said body in the second configuration and establishing or prohibiting an electrical link passing through the body and through the beam.