Grooved Piezoelectric Layer for Thin Device Sound Pressure
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Solution Overview
Problem
The demand for slimmer and thinner electronic devices has led to a need for piezoelectric devices with simplified manufacturing processes and improved sound pressure characteristics, as existing technologies struggle to efficiently produce devices with strong piezoelectric properties while maintaining a thin thickness.
Innovation Solution
A piezoelectric device with a new structure featuring a piezoelectric layer between two electrode layers, including a plurality of grooves, is manufactured using a simplified process involving the preparation of a matrix material, slurry, molding, sintering, and electrode formation, allowing for enhanced sound pressure characteristics and easy application to various surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If a piezoelectric device is made thinner to meet demand for slimmer electronic devices, then the device thickness is reduced, but the manufacturing process becomes more complex and sound pressure characteristics deteriorate
Solution Approach 1:
The piezoelectric layer is segmented by forming multiple grooves that divide it into plurality of piezoelectric elements. This segmentation allows the thin piezoelectric layer to maintain strong piezoelectric properties and improve sound pressure characteristics while keeping the overall device thickness reduced. The grooves create distinct functional regions within the thin structure.
Solution Approach 2:
The invention introduces a dimensional feature (grooves) within the thin piezoelectric layer to compensate for the reduced thickness. By creating three-dimensional structures (grooves with depth) within the thin layer, the device maintains mechanical and electrical properties that would otherwise be lost in a simpler thin structure.
2Length of stationary object
If a piezoelectric device is made thinner to meet demand for slimmer electronic devices, then the device thickness is reduced, but sound pressure characteristics deteriorate
Solution Approach 1:
The piezoelectric layer is segmented by forming multiple grooves that divide it into plurality of piezoelectric elements. This segmentation allows the thin piezoelectric layer to maintain strong piezoelectric properties and improve sound pressure characteristics while keeping the overall device thickness reduced. The grooves create distinct functional regions within the thin structure.
Solution Approach 2:
The grooves are formed at specific locations within the piezoelectric layer to create localized variations in structure and properties. This local quality enhancement allows the thin device to achieve improved sound pressure characteristics in specific regions while maintaining overall thinness.
3Use of energy by stationary object
If existing manufacturing processes are used for thin piezoelectric devices, then production energy is high, but the manufacturing process is simplified only with advanced techniques
Solution Approach 1:
The piezoelectric layer with grooves is formed in advance during the manufacturing process, preparing the structure before final assembly. This preliminary formation of the grooved piezoelectric layer integrates multiple functions into a single component, reducing the need for subsequent complex processing steps and lowering overall production energy.
Solution Approach 2:
The invention merges the piezoelectric function with the structural groove features into a single integrated piezoelectric layer. This combining of functions reduces the number of separate components and assembly steps, thereby simplifying the manufacturing process and reducing production energy consumption.
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 simplifies the manufacturing process, enhances sound pressure characteristics, and enables the piezoelectric device to be driven by low driving voltages, reducing production energy and power consumption while being easily applicable to various apparatuses.
Implementation Method 1
a piezoelectric device including a first electrode layer, a second electrode layer, and a piezoelectric layer between the first electrode layer and the second electrode layer
Data Source
AI summary
A vibration device according to one or more example aspects of the present disclosure may comprise a first electrode layer, a second electrode layer, and a piezoelectric layer between the first electrode layer and the second electrode layer. The piezoelectric layer may include a plurality of grooves.