Dual-Display Speaker Module Layout for Leakage and Noise Control
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Solution Overview
Problem
It is challenging to maintain sound quality and prevent sound pressure leakage in downsized electronic devices, which can cause noise generation due to internal structure vibration and interference with displays.
Innovation Solution
The electronic device incorporates an acoustic waveguide and a stable layout structure with a speaker module positioned between displays, isolating the sound transmission path from the display to prevent sound pressure leakage and noise generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the device is downsized, then portability is improved, but sound quality deteriorates due to difficulty in securing sound transmission path
Solution Approach 1:
The acoustic waveguide extends the sound transmission path in the thickness direction (Z-axis) of the device rather than using only the planar area. This allows efficient sound transmission in a compact footprint by utilizing the third dimension, resolving the contradiction between small device size and adequate sound quality.
Solution Approach 2:
The acoustic waveguide acts as an intermediary structure between the speaker module and the external environment. It mediates the sound transmission by providing a dedicated, controlled path that prevents sound pressure leakage while maintaining compact device dimensions.
2Reliability
If sound transmission path is created, then sound quality is improved, but sound pressure leakage occurs through gaps between structures
Solution Approach 1:
The acoustic waveguide extracts and isolates the sound transmission function from the general device structure. By creating a separate, dedicated transmission path, it prevents sound pressure from leaking into other structural gaps, thereby eliminating the harmful side effect while maintaining sound quality.
Solution Approach 2:
The acoustic waveguide utilizes the display structure as a flexible membrane that can transmit sound while maintaining structural integrity. This allows the sound transmission path to be sealed against sound pressure leakage without requiring rigid, gap-prone joints.
3Reliability
If sound transmission path is created, then sound quality is improved, but noise generation occurs due to internal structure vibration
Solution Approach 1:
The acoustic waveguide extracts the sound transmission function from the display structure, preventing sound pressure from causing unwanted vibrations in internal components. By providing a dedicated transmission path, it isolates the beneficial sound output from the harmful noise-generating vibrations.
4Device complexity
If speaker module is positioned near display, then device layout is simplified, but sound pressure interferes with display causing noise
Solution Approach 1:
The acoustic waveguide serves as an intermediary that allows the speaker module to be positioned close to the display without causing interference. It channels sound pressure through a controlled path, preventing it from reaching and vibrating the display structure, thus maintaining both simplified layout and noise-free operation.
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 design enhances sound quality by preventing sound pressure leakage and noise generation, while allowing for a stable display mounting structure and design freedom.
Implementation Method 1
an acoustic waveguide, a first supporting plate configured to define at least a portion of the acoustic waveguide on one surface
Data Source
AI summary
An electronic device is provided. The electronic device includes an acoustic waveguide, a first support plate for defining at least a part of the acoustic waveguide at one surface thereof, a first display arranged on the one surface of the first support plate, a second display arranged on the other surface of the first support plate, and a speaker module arranged on the other surface of the first support plate between the first support plate and the second display, wherein the acoustic waveguide can be formed to radiate, from one side of the second display to an external space, a sound outputted from the speaker module.