Piezoelectric Device Mounting Stage for Height Reduction
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Solution Overview
Problem
The challenge lies in designing a low-profile piezoelectric device that can accommodate piezoelectric resonator elements and circuit elements of varying sizes within a single container, as existing configurations complicate part control and increase specifications, making it difficult to optimize device height reduction.
Innovation Solution
A piezoelectric device configuration featuring a container with a mounting stage that can be fixed arbitrarily, allowing the piezoelectric resonator element and circuit element to be positioned without overlapping, and using a metal wire connection to reduce parasitic capacitance, along with an adhesive for easy mounting stage fixation and a supporting portion for impact resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the piezoelectric resonator element and circuit element are disposed in parallel without overlapping to reduce device height, then the device height is reduced, but the container requires new design specifications to accommodate elements of largely different sizes, increasing part control complexity
Solution Approach 1:
The mounting stage is designed as a universal component that can accommodate both the piezoelectric resonator element and the circuit element on its upper surface. By providing a common mounting platform with appropriate positioning structures, the same container design can accommodate elements of various sizes without requiring multiple container specifications, thus resolving the contradiction between height reduction and part control complexity
Solution Approach 2:
The mounting stage serves as an intermediary component between the container and the electronic elements. It mediates the accommodation of differently sized elements by providing a standardized interface on its upper surface, allowing flexible placement of elements in parallel configuration while maintaining consistent container specifications
2Reliability
If wiring patterns are arranged in the container to connect circuit element and mounting stage, then connections are established, but long wiring paths increase parasitic capacitance
Solution Approach 1:
The connection terminals are extracted from the container walls and integrated directly onto the mounting stage. This extraction eliminates the need for long wiring patterns through the container, as the mounting stage itself provides the connection interface, thereby reducing parasitic capacitance while maintaining reliable electrical connections
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 configuration enhances design flexibility by accommodating various element combinations within a single container, reduces parasitic capacitance through shorter wiring paths, and provides improved impact resistance by restricting deflection of the piezoelectric resonator element.
Implementation Method 1
The mounting stage is preferably fixed inside the container by an adhesive
Implementation Method 2
the connection terminal of the circuit element and the connection electrode of the mounting stage, and a bonding terminal formed on the container and the connection electrode of the mounting stage are respectively coupled by the metal wire
Implementation Method 3
a piezoelectric resonator element such as a quartz resonator element
Data Source
AI summary
A piezoelectric device includes: a container; a piezoelectric resonator element accommodated in the container; a circuit element accommodated in the container so as not to overlap with the piezoelectric resonator element in a plan view; and a mounting stage to which the piezoelectric resonator element is fixed. The mounting stage is fixed inside the container.