Stacked Display Panel Vibration Generators for Forward Sound
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Solution Overview
Problem
In display apparatuses, the integration of speakers leads to spatial constraints and degraded sound quality due to sound interference from walls and floors, reducing the immersion experience for viewers.
Innovation Solution
A vibration apparatus is integrated into the display panel's rear surface, comprising multiple vibration generators stacked in the same direction with an adhesive member, enhancing sound pressure and low-pitched sound band characteristics by vibrating the panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a separate speaker is installed in the display apparatus, then sound can be provided, but the speaker occupies space and limits design freedom
Solution Approach 1:
The patent merges the speaker function with the display panel by integrating vibration generators directly into the rear surface of the display panel. The display panel itself serves as the vibration plate, eliminating the need for separate speaker components and freeing up internal space while maintaining design flexibility.
Solution Approach 2:
The display panel is given multiple functions: it serves both as the visual display surface and as the vibration plate for sound generation. This multi-functionality eliminates the need for dedicated speaker space while enabling integrated audio-visual output.
2Reliability
If a speaker is installed in the display apparatus, then sound output is achieved, but sound quality is degraded due to interference from walls and floors
Solution Approach 1:
Instead of projecting sound forward from a traditional speaker, the patent vibrates the display panel to generate sound that radiates in multiple directions, including backward and downward. This inversion of the traditional sound projection approach allows sound to reach listeners from different paths, reducing interference from walls and floors while improving overall sound quality and immersion.
3Reliability
If multiple vibration generators are stacked to increase displacement amplitude, then low-pitched sound characteristics are improved, but device complexity increases
Solution Approach 1:
The patent stacks multiple vibration generators in a nested configuration where they share the same space vertically. This nested arrangement allows the generators to work together to produce enhanced low-pitched sounds while minimizing the overall volume occupied by the audio component, effectively managing device complexity through efficient spatial utilization.
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 solution effectively enhances sound quality and pressure characteristics, improving the immersion experience by directing sound forward and minimizing interference, thus providing better sound localization and satisfaction.
Implementation Method 1
a first vibration generator and a second vibration generator which overlap one another in a thickness direction of the display panel
Data Source
AI summary
An apparatus includes a display panel displaying an image and a vibration apparatus disposed at a rear surface of the display panel to vibrate the display panel. The vibration apparatus may include a plurality of vibration generators overlapping one another. Accordingly, a sound may be generated based on a vibration of the display panel, and a sound having an enhanced sound pressure level characteristic may be output in a forward direction of the display panel.