Vibrator Circuit Layout With Bond-Area Inductor Placement
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Solution Overview
Problem
Existing vibrator devices face challenges in reducing size due to the limited placement of inductors within integrated circuit elements, which restricts further miniaturization and increases the risk of crosstalk and electrode overlap, affecting the Q-value of the inductor.
Innovation Solution
The vibrator device incorporates an inductor that is electrically coupled to the circuit but does not overlap the vibrator element in a plan view, allowing for separate placement within the container, thereby avoiding the limitations of inductor placement and reducing the size of the circuit and device while maintaining the Q-value.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the inductor is incorporated in the integrated circuit element, then the device integration is improved, but the inductor placement options are limited and device size cannot be reduced further
Solution Approach 1:
The patent divides the device into two separate functional modules: the integrated circuit element containing the inductor, and the vibrator element housed in the container. This segmentation allows independent optimization of each module's placement and size, resolving the contradiction between integration and size reduction by enabling flexible spatial arrangement of discrete components.
Solution Approach 2:
The patent utilizes three-dimensional spatial arrangement by placing the inductor in the integrated circuit element separately from the vibrator element in the container. This dimensional separation in the plan view allows both components to coexist without overlap, enabling size reduction while maintaining functional integration through vertical or lateral stacking arrangements.
2Reliability
If the inductor is disposed separately from the vibrator element, then the Q-value deterioration is prevented, but the device size cannot be reduced
Solution Approach 1:
The patent applies local quality by ensuring the inductor is positioned in a specific location within the integrated circuit element where it does not overlap with the vibrator element in the plan view. This localized placement strategy maintains the high Q-value of the inductor by avoiding electromagnetic interference with the vibrator, while the overall device size is reduced through efficient spatial utilization.
Solution Approach 2:
The patent introduces an intermediary spatial arrangement where the inductor and vibrator element are separated by the structure of the integrated circuit element and container. This intermediary positioning prevents direct electromagnetic interaction that would deteriorate the Q-value, while the compact overall design is achieved through optimized layout and integration of these separated components.
3Volume of moving object
If the inductor overlaps the vibrator element in plan view, then the device size is reduced, but the Q-value of the inductor deteriorates due to crosstalk
Solution Approach 1:
The patent extracts the inductor from the overlapping region with the vibrator element by positioning it separately within the integrated circuit element. This extraction eliminates the harmful electromagnetic crosstalk that would occur with overlap, preserving the inductor's Q-value while the device maintains a compact form factor through optimized non-overlapping layout.
Solution Approach 2:
The patent applies preliminary anti-action by proactively positioning the inductor in a location that prevents future electromagnetic interference with the vibrator element. This preventive placement strategy avoids Q-value deterioration before it can occur, while the device design incorporates this non-overlapping arrangement to achieve compact dimensions without sacrificing performance.
Data Source
AI summary
A vibrator device includes a vibrator element, a container in which the vibrator element is housed, a circuit which is disposed in the container, and which overlaps the vibrator element in a plan view, and an inductor which is disposed in the container, which fails to overlap the vibrator element in the plan view, and which is electrically coupled to the circuit. The container includes at least a first member and a second member, and a bonding area configured to bond the first member and the second member to each other, and the inductor is disposed in the bonding area.