Dual-Region Piezo Vibration Member for Thin Flexible Audio
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Solution Overview
Problem
Existing speakers and piezoelectric elements used in apparatuses occupy space, leading to design limitations and are prone to damage due to their fragile nature, especially in flexible devices.
Innovation Solution
A vibration device with a first and second vibration portion is integrated into the apparatus, utilizing a vibration member with multiple regions to generate sound, enhancing sound quality and pressure levels, and incorporating materials like single and poly-crystals to complement low-pitched sound bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a speaker is disposed in an apparatus, then sound reproduction is achieved, but the apparatus occupies more space and has increased thickness
Solution Approach 1:
The patent replaces the conventional electromagnetic actuator (magnet and coil) with a piezoelectric element that utilizes the piezoelectric effect to generate vibrations. This substitution enables thin-profile sound reproduction while maintaining audio quality, directly resolving the contradiction between sound reproduction capability and apparatus thickness.
Solution Approach 2:
The patent changes the operating parameters by utilizing high-frequency vibrations from piezoelectric elements rather than low-frequency electromagnetic actuation. This parameter change enables the thin piezoelectric structure to achieve effective sound reproduction without requiring the thickness of traditional actuators.
2Length of stationary object
If piezoelectric elements are used to reduce thickness, then apparatus thickness is reduced, but the elements are fragile and easily damaged due to external impact
Solution Approach 1:
The patent introduces a cushioning structure positioned between the piezoelectric element and external impacts. This cushioning layer absorbs external forces and prevents direct contact with the fragile piezoelectric element, thereby protecting against damage while maintaining the thin-profile advantage.
Solution Approach 2:
The patent employs a composite structure combining the piezoelectric element with protective materials having different mechanical properties. This composite approach maintains the thin thickness of the piezoelectric component while adding durability through the protective layers, resolving the fragility issue.
3Length of stationary object
If piezoelectric elements are used for thin-profile sound reproduction, then thickness is reduced, but reliability is low due to fragile characteristic
Solution Approach 1:
The cushioning structure protects the piezoelectric element from external impacts before damage can occur. This protective measure ensures reliable operation by preventing the fragile element from breaking during normal use or accidental drops, thereby improving overall reliability while maintaining thin profile.
Solution Approach 2:
The cushioning structure acts as an intermediary between external forces and the piezoelectric element. It mediates the interaction by absorbing and dissipating impact energies, preventing direct transmission of forces that would damage the fragile element, thus improving reliability without increasing thickness.
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 provides improved sound characteristics and pressure levels without increasing thickness, while minimizing damage risks, allowing for a more flexible and efficient sound generation.
Implementation Method 1
a vibration device configured to vibrate the vibration member
Implementation Method 2
piezoelectric elements for realizing a thin thickness
Data Source
AI summary
An apparatus may include a vibration member and a vibration device configured to vibrate the vibration member. The vibration device may be configured to comprise a first vibration portion and a second vibration portion which is different from the first vibration portion.