Speaker and Microphone UTG Diaphragm for Miniaturized Audio
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing speaker and microphone diaphragms face challenges in achieving high rigidity, damping properties, and sound quality, particularly in miniaturized devices, due to material and shape complexities that affect sound propagation and absorption.
Innovation Solution
The use of ultra-thin glass (UTG) diaphragms with controlled thickness (0.01 to 0.1 mm) and enhanced flexibility, produced through non-contact fusion/pull-down processes, combined with additional coatings like aluminum, nickel, copper, diamond, or polymer films, to improve durability and damping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If traditional materials are used for diaphragm, then rigidity and damping properties can be achieved, but the diaphragm thickness cannot be reduced further for miniaturization
Solution Approach 1:
The patent employs composite material structures combining UTG glass with additional layers such as aluminum, nickel, copper, diamond, or polymer films. This composite approach allows the diaphragm to achieve both extreme thinness (0.01-0.1mm) and the necessary mechanical properties including rigidity and damping, resolving the contradiction between miniaturization and structural integrity.
Solution Approach 2:
The patent changes the physical parameters of the diaphragm by using ultra-thin glass with controlled thickness (0.01-0.1mm) and adjusting the composition and structure of composite layers. This parameter optimization enables the diaphragm to maintain sufficient strength and damping while achieving the desired miniaturization.
2Manufacturing precision
If contact processes are used in glass manufacturing, then structural strength can be ensured, but surface smoothness and cleanliness are compromised
Solution Approach 1:
The patent replaces traditional contact-based mechanical processing with non-contact fusion/pull-down processes for glass manufacturing. This substitution eliminates surface damage and contamination from mechanical contact while still producing structurally sound ultra-thin glass, achieving both surface quality and structural integrity.
Solution Approach 2:
The non-contact fusion/pull-down process acts as an intermediary method between glass formation and final product acquisition. This process allows the glass to be formed and handled without direct contact, preserving surface smoothness and cleanliness while maintaining structural strength through controlled cooling and solidification.
3Volume of moving object
If ultra-thin glass is pulled down, then thickness can be reduced to 0.01-0.1mm, but uneven thickness, holes, and fragments occur
Solution Approach 1:
The patent optimizes the viscosity of the raw glass material and controls the pulling speed during the fusion/pull-down process to achieve uniform thickness without defects. By carefully adjusting these parameters, the process produces consistent ultra-thin glass (0.01-0.1mm) free from unevenness, holes, and fragments, ensuring reliability.
Solution Approach 2:
The manufacturing process incorporates feedback control mechanisms to monitor and adjust the pulling speed and temperature in real-time. This feedback ensures that the glass thickness remains uniform and within the desired range, preventing the formation of holes and fragments while maintaining consistent product quality.
4Reliability
If additional coating layers are added to UTG diaphragm, then durability and damping are improved, but manufacturing complexity increases
Solution Approach 1:
The patent uses composite material structures where UTG glass is combined with functional coating layers (aluminum, nickel, copper, diamond, or polymer films). Each layer is selected for its specific damping or durability properties, creating a multi-layer composite that enhances overall performance while managing manufacturing complexity through established coating techniques.
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 UTG diaphragms provide improved sound quality and reduced distortion in miniaturized audio devices by ensuring smooth surfaces and controlled energy loss during sound propagation, while maintaining flexibility and durability.
Implementation Method 1
A voice coil is configurated corresponding to the UTG diaphragm, and cooperates with the magnetic component to generate driving force to promote the vibration of the UTG diaphragm
Data Source
AI summary
A diaphragm for a speaker includes a lower surface area, a central area formed on said lower surface area, an upper surface area formed on said central area. The upper surface area, the central area and the lower surface area includes homogeneous amorphous materials. The diaphragm includes internal stress changing with a depth from the surface to the center of the diaphragm.