Display Panel Vibration Sound Generation and Wave Control
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Solution Overview
Problem
Conventional display apparatuses face challenges in providing clear sound without degrading the immersion experience due to sound waves being directed towards the rear surface, leading to interference with walls or floors, and occupy space with separate speakers, limiting design and immersion.
Innovation Solution
A display apparatus with a sound generating device integrated into the rear surface of the display panel, which vibrates to direct sound forward, eliminating the need for external speakers and incorporating a partition and pads to reduce wave phenomena and enhance sound output characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If sound is output from the rear surface of the display panel, then the structure is simple, but sound quality is degraded due to interference with walls or floors
Solution Approach 1:
The patent inverts the conventional sound output direction by making the display panel itself vibrate to generate sound that travels toward the front surface (viewer side) rather than the rear surface. This is achieved by integrating a sound generating device between the display panel and supporting member, causing the panel to act as a vibration membrane that directly emits sound forward, eliminating interference from rear surface reflections.
2Object-affected harmful factors
If a separate speaker is provided, then sound can be output, but it occupies space and limits design freedom
Solution Approach 1:
The patent merges the sound generation function with the display panel structure itself. The display panel serves dual purposes: displaying images and generating sound through vibration. The sound generating device is integrated into the space between the display panel and supporting member, eliminating the need for separate external speakers and freeing up device space.
Solution Approach 2:
The display panel is given multiple functions: it serves as both the image display surface and the sound generation membrane. By making the panel itself capable of vibration-based sound output, the device achieves multi-functionality without requiring additional dedicated components, thus reducing overall space occupation.
3Object-affected harmful factors
If the display panel vibrates to generate sound, then sound quality is enhanced, but wave phenomena occur on the panel surface
Solution Approach 1:
The patent introduces a partition structure as an intermediary element between the sound generating device and the display panel. This partition helps control and dampen the vibration waves propagating across the panel surface, reducing unwanted wave phenomena while preserving the beneficial sound generation effect. The partition acts as a mediator that manages the vibration energy distribution.
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 enhances sound quality by directing sound towards the viewer, reduces wave interference, and frees up space for improved design, while providing stereo sound and improved sound output characteristics.
Implementation Method 1
at least one sound generating device on the rear surface of the display panel, the at least one sound generating device being configured to vibrate the display panel to generate sound
Data Source
AI summary
A display apparatus includes a display panel configured to display an image, a supporting member on a rear surface of the display panel, the supporting member being configured to support the display panel, at least one sound generating device on the rear surface of the display panel, the at least one sound generating device being configured to vibrate the display panel to generate sound, a partition between the display panel and the supporting member, the partition including a first side and a second side vertical to the first side, a first pad in the first side, and a second pad in a side facing the first side, the second pad including a material differing from a material of the partition.