Display Panel Chassis Acoustic Channel Isolation
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Solution Overview
Problem
Existing display devices face challenges in achieving stereophonic sound quality due to interference between acoustic channels when the display panel is used as a diaphragm, leading to sound distortion and deterioration.
Innovation Solution
The display device incorporates a display panel divided into sections, with each section vibrated by a corresponding sound signal. The device includes a chassis with openings between the exciters to reduce interference between acoustic channels, and partitions surrounding the exciters to enhance sound isolation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display panel is used as a diaphragm for sound output, then the direction of sound output matches the image display direction and bezel is reduced, but interference between acoustic channels occurs causing sound distortion
Solution Approach 1:
The display panel is divided into multiple independent vibration regions, each driven by a separate exciter for different acoustic channels. This segmentation isolates the vibration zones to prevent cross-channel interference while maintaining the integrated display-sound functionality
Solution Approach 2:
Partition structures are introduced as intermediary elements between adjacent vibration regions. These partitions act as mechanical barriers that block vibration transmission from one acoustic channel to another, reducing interference while allowing each region to function independently
2Device complexity
If multiple exciters are disposed close to each other to reduce device size, then the device complexity is reduced, but interference between acoustic channels increases
Solution Approach 1:
The chassis is divided into separate regions with partitions between them, creating isolated zones for each exciter. This allows multiple exciters to be positioned close together while maintaining acoustic channel independence through the partition barriers
Solution Approach 2:
Partition structures serve as intermediary barriers between closely spaced exciters. These partitions physically separate the vibration sources while occupying minimal space, enabling compact exciter arrangement without sacrificing acoustic isolation
Data Source
AI summary
A display device according to an embodiment includes: a display panel including a first region and a second region; a chassis disposed on a rear surface of the display panel; a first exciter in contact with the first region and fixed to the chassis; and a second exciter in contact with the second region and fixed to the chassis. The chassis defines an opening disposed between the first exciter and the second exciter.