Multi-Patterned Voice Coil Plate for Slim Flat Panel Speaker
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Solution Overview
Problem
Existing voice coil plates in speakers face challenges with increased weight, impedance, and reduced efficiency due to unnecessary patterns and electromotive force induction, which hinder sound pressure and vibration efficiency.
Innovation Solution
A voice coil plate with a multi-patterned coil structure, featuring a base substrate with a voice coil comprising parallel first and second pattern parts on different surfaces or layers, reducing weight and impedance while enhancing inductance by connecting second patterns in parallel to first patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If unnecessary patterns are formed on the base substrate, then the voice coil plate can be manufactured with standard patterns, but the weight of the vibration part increases
Solution Approach 1:
The invention extracts and removes unnecessary patterns from the base substrate, keeping only the essential voice coil patterns. This extraction principle eliminates harmful patterns that increase weight while maintaining manufacturability through selective pattern retention.
Solution Approach 2:
The invention applies local quality by differentiating between necessary and unnecessary patterns in different regions of the base substrate. Essential voice coil patterns are retained in specific locations while unnecessary patterns are removed, optimizing weight without compromising manufacturing capability.
2Ease of manufacture
If unnecessary patterns are formed on the base substrate, then the voice coil plate can be manufactured with standard patterns, but the impedance of the speaker increases
Solution Approach 1:
The invention extracts and removes unnecessary patterns that contribute to increased impedance. By eliminating these redundant conductive paths, the overall impedance of the speaker is reduced while maintaining standard manufacturing processes.
Solution Approach 2:
The invention applies local quality by selectively removing unnecessary patterns in specific regions, optimizing the electrical characteristics. This localized pattern removal reduces impedance in critical areas while preserving manufacturability through standardized production methods.
3Ease of manufacture
If unnecessary patterns are formed on the base substrate, then the voice coil plate can be manufactured with standard patterns, but the efficiency of the speaker deteriorates
Solution Approach 1:
The invention extracts and removes unnecessary patterns that deteriorate speaker efficiency. By eliminating these redundant patterns, the efficiency is improved while maintaining compatibility with standard manufacturing processes.
Solution Approach 2:
The invention applies local quality by differentiating between necessary and unnecessary patterns in different regions. Essential patterns are retained to maintain efficiency, while unnecessary patterns are removed, optimizing speaker performance without compromising manufacturability.
4Ease of manufacture
If vertical patterns are formed in the upward and downward vibration direction, then the voice coil plate can be manufactured with standard patterns, but induced electromotive force is generated in the left and right direction
Solution Approach 1:
The invention extracts and removes vertical patterns that generate harmful induced electromotive force. By eliminating these patterns, the induced EMF is reduced while maintaining manufacturability through standard production methods.
Solution Approach 2:
The invention applies local quality by selectively removing vertical patterns in regions where they generate harmful induced electromotive force. This localized removal eliminates the harmful effect while preserving manufacturability through standardized processes.
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 multi-patterned coil structure significantly reduces weight and impedance, enhances inductance, and improves sound pressure and vibration efficiency by optimizing the voice coil's magnetic circuit and vibration performance.
Implementation Method 1
when electric current flows through a voice coil, the flowing electric current generates, around a moving coil, a magnetic field that expands and contracts at the same frequency as an audio signal
Implementation Method 2
the voice coil is subject to the magnetic field generated by a magnet inside a speaker unit, the voice coil plate moves upward and downward in response to the magnetic field while interacting with the magnetic field generated in the voice coil
Data Source
AI summary
The present invention relates to a voice coil plate having a multi-patterned coil for a slim speaker, the voice coil plate enabling weight reduction, impedance value reduction and inductance value enhancement; and a slim flat speaker enabling weight reduction, impedance value reduction and inductance value enhancement. In one embodiment, the voice coil plate comprises: a base substrate; and a voice coil formed on one surface of the base substrate comprising: a first pattern part arranged along a first direction; and a second pattern part arranged along a second direction different from the first direction. The first pattern part comprises a plurality of first patterns spaced apart at predetermined intervals, and the second pattern part comprises a plurality of second patterns spaced apart at predetermined intervals. At least two of the second patterns, among the plurality of second patterns, are connected in parallel to one of the first patterns.