Sound-Generating Display Panel With Forward Audio and Edge Damping
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Solution Overview
Problem
Existing display apparatuses fail to generate sound that can be propagated in front of the display panel, with existing technologies, resulting in poor sound quality and reduced viewer immersion due to sound being directed away from the viewer.
Innovation Solution
A display apparatus with a sound generating unit at the rear surface of the display panel, utilizing a guide panel with an adhesive fixing element and vibration absorber to direct sound forward and suppress vibrations, enhancing sound quality and immersion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If a sound apparatus is used to output sound, then sound can be generated, but the sound is directed toward the rear surface or side surface of the main body rather than to the front surface of the display panel
Solution Approach 1:
The sound generation approach is inverted by making the display panel itself the sound source through vibration, rather than using a separate sound apparatus. The display panel vibrates to generate sound waves that propagate forward toward the viewer, reversing the conventional directionality problem where sound was directed backward or sideways.
Solution Approach 2:
The display panel is given multiple functions: it serves both as the visual display medium and as the sound generation source. By integrating sound generation capability into the display panel through vibration, the system eliminates the need for separate sound apparatuses and achieves omnidirectional sound propagation toward the viewer.
2Object-generated harmful factors
If the display panel is vibrated directly to generate sound, then sound can be propagated in front of the display panel, but vibration reflected from the edge of the display panel degrades sound quality
Solution Approach 1:
The vibration absorption layer converts the harmful reflected vibrations from the edge of the display panel into beneficial damping effects. By placing a vibration absorption layer at the edge, the reflected vibrations are absorbed and converted to heat through material hysteresis, eliminating the degradation of sound quality while maintaining forward sound propagation.
Solution Approach 2:
A vibration absorption layer is introduced as an intermediary element between the display panel edge and the surrounding structure. This intermediate layer mediates the vibration energy, absorbing and dissipating reflected vibrations before they can propagate back and degrade sound quality, while allowing the display panel to continue vibrating effectively for sound generation.
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 apparatus accurately transmits sound to the viewer, improving sound quality and immersion by minimizing vibration reflections, thus providing high-quality sound propagation.
Implementation Method 1
a vibration absorber to absorb vibrations generated by the sound generating unit
Implementation Method 2
a guide panel with an adhesive fixing element
Data Source
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AI summary
The present disclosure relates to a display apparatus, and more particularly, to a display apparatus having a display panel (DIS) capable of generating sound. A display apparatus according to the present disclosure comprises: a display module (DIS); a guide panel (GP) disposed at circumferences of a rear surface of the display module (DIS); a back cover (BC) attached to the guide panel (GP); a sound generating unit (EX) disposed between the display module (DIS) and the back cover (BC); and an adhesive fixing element (AD) and a vibration absorber (DM) disposed between the guide panel (GP) and the rear surface of the display module (DIS), wherein the adhesive fixing element (AD) fasten the guide panel (GP) to the rear surface of the display module (DIS), and wherein the vibration absorber (DM) is disposed at the guide panel (GP) as facing to inner portions of the display module (DIS).