Quartz Vibrator Coupling Recess for Smaller, Stronger Bonding
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Solution Overview
Problem
The existing quartz crystal devices face challenges in reducing size due to the need for space for penetration parts and breaking-off parts, which limits their miniaturization potential.
Innovation Solution
The vibrator device incorporates a vibrating body with a recessed coupling part and a protrusion on its side surface, allowing for a breaking-off mechanism that reduces the device's size while enhancing bonding strength through increased contact area with a conductive bonding material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If penetration parts are disposed along the peripheral edge of the quartz crystal element to increase bonding strength, then the bonding strength between the quartz crystal element and the electrically-conductive adhesive is improved, but the device size cannot be reduced because both penetration parts and breaking-off parts require separate spaces
Solution Approach 1:
The invention merges the functions of penetration parts and breaking-off parts into a single integrated structure. The breaking-off part itself serves as the penetration part by having a recess that receives the electrically-conductive adhesive, eliminating the need for separate penetration parts and reducing device size while maintaining bonding strength
Solution Approach 2:
The breaking-off part is designed to serve multiple functions: it acts as both the separation feature for detaching the quartz crystal element from the wafer and the penetration feature for adhesive bonding. This multi-functionality reduces the number of separate components needed and enables device miniaturization
Data Source
AI summary
A vibrator device includes a vibrating body having obverse and reverse principal surfaces and a side surface connecting the obverse and reverse principal surfaces to each other, a package configured to house the vibrating body, and a bonding material configured to fix the vibrating body to the package, wherein the vibrating body has a coupling part including a recess recessed from the side surface toward a center of the principal surfaces, and a protrusion protruding from a side surface of the recess, the protrusion is one of breaking-off parts with which a plurality of the vibrating bodies is broken off from a wafer to which the plurality of the vibrating bodies is coupled, and the bonding material has contact with a side surface of the protrusion in the recess.