Display Panel Sound Generation via Rear Vibration
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Solution Overview
Problem
Conventional display apparatuses suffer from poor sound quality due to speakers emitting sound towards the rear or lower portions instead of the viewer, leading to reduced immersion and deteriorated sound quality from interference with walls and floors, and occupy valuable space in device design.
Innovation Solution
A display apparatus with a new sound generating device structure that includes multiple sound generating devices on the rear surface of the display panel, configured to vibrate and direct sound forward, enhancing sound quality and reducing device thickness for improved aesthetics and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a speaker is installed in a display apparatus, then sound can be provided, but the sound travels toward the lower or rear portion instead of the front, reducing immersion and sound quality
Solution Approach 1:
The patent inverts the conventional speaker installation approach by placing the sound generating device on the rear surface of the display panel and orienting it to emit sound forward through the display panel, rather than installing speakers at the bottom or rear that emit sound backward or downward. This inversion resolves the contradiction by changing the sound emission direction from rear/lower to front, thereby improving both immersion and sound quality.
2Ease of operation
If a speaker is installed in a display apparatus, then sound output is achieved, but the speaker occupies valuable space and limits design flexibility
Solution Approach 1:
The patent merges the sound generating device with the display panel structure by integrating it into the rear surface of the display panel. This combination eliminates the need for separate speaker compartments or additional space allocations, thereby achieving sound output capability while minimizing space occupation and maximizing design flexibility.
3Ease of manufacture
If sound is emitted toward the rear or lower portion, then speaker installation is simplified, but sound quality deteriorates due to interference from walls and floors
Solution Approach 1:
The patent inverts the sound emission direction from the conventional rear/lower orientation to a forward orientation through the display panel. This inversion eliminates the harmful effect of sound reflection from walls and floors by directing sound away from these surfaces, thereby improving sound quality while maintaining manufacturing simplicity through the integrated design.
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 directs sound towards the viewer, enhancing sound quality and immersion while minimizing space usage, thereby improving the overall user experience and design flexibility of display devices.
Implementation Method 1
a sound generating device configured to vibrate the display panel to generate sound
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3A~3B
AI summary
A display apparatus includes a display panel configured to display an image and including a first to a fifth regions, at least one first and fourth sound generating devices in a left region of a rear surface of the display panel and in the first and fourth regions, at least one second and fifth sound generating device in a right region of the rear surface and in the second and fifth regions, and at least one third sound generating device in a center region of the rear surface and in the third region. The at least one first to third sound generating devices is configured to vibrate the display panel to generate sound, and the at least one fourth and fifth sound generating devices is configured to vibrate the display panel to generate sound in a direction upwards from the display panel.