Display Panel Sound Generation via Direct Vibration
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Solution Overview
Problem
Conventional display apparatuses interrupt viewer immersion and degrade sound quality due to separate speakers being placed behind or below the display panel, causing sound to travel away from the viewer and suffer from interference with surrounding environments.
Innovation Solution
A display apparatus with a sound-generating device integrated into the display panel, using a magnet and bobbin configuration to directly vibrate the panel and generate sound, eliminating the need for external speakers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If a separate speaker is provided outside the display apparatus, then sound can be generated, but the speaker occupies space and restricts design and layout
Solution Approach 1:
The patent merges the speaker functionality with the display panel by integrating a sound-generating device that directly vibrates the panel. This eliminates the need for a separate external speaker, thereby reducing device complexity and space occupation while maintaining sound generation capability. The sound-generating device is positioned within the display apparatus and contacts the display panel to generate sound directly through vibration.
2Object-generated harmful factors
If a separate speaker is disposed adjacent to the display panel, then sound can be generated, but sound travels to the rear side or lower side rather than toward the viewer
Solution Approach 1:
Instead of placing the speaker outside the display apparatus and having sound travel through air to the viewer, the patent inverts the approach by having the sound-generating device directly contact and vibrate the display panel. This causes sound to be generated at the panel itself and travel toward the viewer's position, improving both sound quality and viewer immersion experience.
Solution Approach 2:
The display panel serves as an intermediary medium for sound transmission. Rather than using air as the transmission medium from an external speaker, the panel itself becomes the vibration source and transmission path, directly converting electrical signals to mechanical vibrations that propagate sound toward the viewer.
3Object-generated harmful factors
If a separate speaker is provided, then sound can be generated, but sound quality is degraded due to interference with sound reflected from walls or floor
Solution Approach 1:
The patent extracts the sound generation function from the external environment and relocates it within the display apparatus. By placing the sound-generating device inside the apparatus and having it vibrate the display panel, the system eliminates the need for sound to travel through external air spaces, thereby removing the source of reflections and interference from walls or floors.
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
Enhances viewer immersion by directing sound towards the viewer and improves sound quality by eliminating interference from external sources, while also simplifying the device design by integrating sound generation directly into the panel.
Implementation Method 1
a sound-generating device in contact with the display panel, the sound-generating device being configured to directly vibrate the display panel to generate sound
Implementation Method 2
using a magnet and bobbin configuration to directly vibrate the panel and generate sound
Data Source
AI summary
A display apparatus includes: a display panel configured to display an image, a support member on a rear surface or a side surface of the display panel, the support member being configured to support the display panel, a sound-generating device in contact with the display panel, the sound-generating device being configured to directly vibrate the display panel to generate sound, and a circuit board between the display panel and the support member, wherein the sound-generating device is on the circuit board.