Display Panel Vibration Layout for Multi-Channel Sound Directionality
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Solution Overview
Problem
Display apparatuses face challenges with sound quality deterioration due to speaker interference and limited design spatial disposition, as well as reduced viewer immersion.
Innovation Solution
Incorporation of a vibration device at the rear surface of the display panel to generate sound by vibrating the panel, enhancing sound pressure characteristics and enabling multi-channel sound output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If a separate speaker is installed in the display apparatus, then sound output capability is provided, but the speaker occupies space and limits design and spatial disposition
Solution Approach 1:
The patent merges the sound generation function with the display panel by integrating a vibration device directly onto the rear surface of the display panel. This eliminates the need for separate speakers and resolves the spatial disposition limitations while preventing sound interference issues that arise from separate speaker installations.
Solution Approach 2:
The display panel serves multiple functions: it acts as both the visual display surface and the sound generation surface through the integrated vibration device. This multi-functionality eliminates the need for separate audio components and optimizes the spatial design of the display apparatus.
2Ease of manufacture
If sound is output from the rear or lower direction of the display apparatus, then speaker installation is simplified, but sound quality is deteriorated due to interference between sounds reflected from wall or ground
Solution Approach 1:
Instead of outputting sound from the rear or lower direction where reflection interference occurs, the patent inverts the approach by generating sound from the front surface of the display panel through the vibration device. This eliminates the harmful sound reflection interference while maintaining manufacturing simplicity.
3Reliability
If a vibration device is integrated at the rear surface of the display panel, then sound pressure characteristic is enhanced and multi-channel sound is enabled, but device structure becomes more complex
Solution Approach 1:
The vibration device is merged with the display panel structure, utilizing the panel itself as the sound generation surface. This integration enhances sound pressure characteristics and enables multi-channel sound output while avoiding the need for separate speaker assemblies, thereby managing structural complexity.
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
Improves sound quality and directionality, allowing for immersive audio experiences without the need for separate speakers, thereby optimizing spatial design and enhancing viewer engagement.
Implementation Method 1
a vibration device which is disposed at a rear surface of a display panel and vibrates the display panel to generate a sound
Data Source
AI summary
A display apparatus includes a display device including a display panel configured to display an image and include first to sixth regions, at least one first vibration device and at least one second vibration device respectively at the first region and the second region, at least one third vibration device, at least one fourth vibration device, and at least one fifth vibration device respectively at the fourth to sixth regions, a first partition between the first region and the third region, a second partition between the second region and the third region, a third partition between the fourth region and the sixth region, and a fourth partition between the fifth region and the sixth region, wherein a length of one or more among the first partition and the second partition differs from a length of one or more among the third partition and the fourth partition.