Crystal Resonator Sealing with Outer Joining Material
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Solution Overview
Problem
The use of thermosetting resin in crystal resonation devices can lead to gasified components being released into the sealed space, adhering to the crystal resonator and degrading its resonance characteristics.
Innovation Solution
A dome-shaped cap with a joining material containing a cured thermosetting resin is used, where the joining material is located in the outer side portion of the cap's inner wall, allowing gasified components to be released outside the sealed space, thereby minimizing adherence to the crystal resonator.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If thermosetting resin is used as joining material, then the base plate and cap can be joined effectively, but gasified components are released into the sealed space and adhere to the crystal resonator surface, degrading resonance characteristics
Solution Approach 1:
The joining material is positioned specifically in the outer side portion of the cap's inner wall, creating a localized arrangement where gasified components are directed away from the crystal resonator. This spatial differentiation ensures that the joining function is maintained while the harmful gas release is confined to a specific region that does not affect the resonator's performance.
2Strength
If thermosetting resin is cured in the joining material, then strong bonding is achieved, but gasified components are released during curing process
Solution Approach 1:
The harmful gasified components are extracted from the sealed space by positioning the joining material in the outer side portion of the cap. During the curing process, gases are directed outward toward the cap's outer wall rather than into the sealed space, effectively separating the harmful byproducts from the crystal resonator environment.
3Ease of manufacture
If the joining material is positioned inside the sealed space, then easy assembly is achieved, but gasified components directly contact the crystal resonator causing performance degradation
Solution Approach 1:
The joining material is positioned in a specific spatial dimension - the outer side portion of the cap's inner wall - rather than being freely placed within the sealed space. This dimensional positioning creates a spatial buffer zone that prevents direct contact between gasified components and the crystal resonator, while still maintaining manufacturing simplicity.
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 effectively suppresses the degradation of resonance characteristics by ensuring that gasified components from the joining material are released outside the sealed space, maintaining the crystal resonator's performance.
Implementation Method 1
after the thermosetting resin is gelled, the thermosetting resin is heated so that an internal pressure of the sealed space increases, the thermosetting resin moves outward
Implementation Method 2
A crystal resonation device using a crystal resonator is known
Data Source
AI summary
A crystal resonation device that includes a base plate, a cap, a joining material, and a crystal resonator. The cap is provided on the base plate. The cap forms a sealed space with the base plate. The joining material joins the base plate and the cap. The joining material contains a cured material of thermosetting resin. The crystal resonator is provided on the base plate in the sealed space. The joining material is located in an outer side portion of a wall of the cap joined to the joining material.