Multi-Layer Segmented Coil Structure for Compact Speaker Miniaturization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current dynamic speakers and voice coil motors face challenges in miniaturization due to fixed coil turns and large volume, making them unsuitable for compact electronic devices.
Innovation Solution
The design incorporates a substrate with a coil structure featuring a first conductor layer, a second conductor layer with separated line segments, and an insulation layer with openings for electrical connections, allowing for adjustable coil configurations and miniaturization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If traditional dynamic speakers and voice coil motors are used with fixed coil turns, then reliable sound generation and mechanical movement are achieved, but the overall volume and weight increase, making miniaturization difficult
Solution Approach 1:
The coil structure is divided into multiple conductor layers (first conductor layer, second conductor layer, third conductor layer) with insulation layers between them. Each layer contains separate line segments that are electrically connected through openings in the insulation layers. This segmented multi-layer design allows the coil to achieve the required number of turns within a compact volume while maintaining electrical connectivity and functional reliability
Solution Approach 2:
The patent transitions from a traditional planar coil layout to a three-dimensional multi-layer stacked configuration. By arranging conductor layers vertically stacked with insulation layers in between, and connecting them through vertical openings, the design utilizes the third dimension (height/depth) to increase the effective coil turn density without proportionally increasing the planar footprint, thereby achieving miniaturization while preserving functional performance
2Volume of moving object
If the coil structure is miniaturized to reduce device volume, then compact electronic devices can be achieved, but the number of coil turns becomes difficult to adjust and may compromise performance
Solution Approach 1:
The multi-layer coil structure with configurable line segments and insulation layer openings provides design flexibility. The number of turns, layer configurations, and connection patterns can be adjusted during the design phase to optimize performance for different applications. This dynamic configurability allows the same basic structure to be adapted for various coil turn requirements while maintaining a compact footprint
Solution Approach 2:
Different regions of the coil structure can be optimized independently. Each conductor layer and line segment can be designed with specific dimensions, spacing, and connection patterns tailored to local performance requirements. This allows selective adjustment of coil characteristics in different areas to achieve both miniaturization and performance optimization
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
This configuration enables the creation of compact electronic devices with adjustable coil structures, facilitating miniaturization and weight reduction while maintaining effective sound generation and precise mechanical movements.
Implementation Method 1
When the coil is energized, a magnetic field is generated. Through the interaction between this magnetic field and the magnetic element, it causes the diaphragm to vibrate
Implementation Method 2
Through the interaction between this magnetic field and the magnetic element, it causes the diaphragm to vibrate, which further pushes the air to generate sound
Data Source
AI summary
An electronic device includes a substrate; and a coil structure disposed on the substrate. The coil structure is provided with a first conductor layer including a connection line; a second conductor layer including a plurality of line segments separated from each other; and a first insulation layer disposed between the first conductor layer and the second conductor layer, and provided with a plurality of first openings, wherein adjacent two of the plurality of line segments are electrically connected to the connection line through the plurality of first openings.