Display Panel Sound Generators for Directional Audio
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Solution Overview
Problem
Conventional display devices with integrated sound systems face challenges in directing sound output effectively, often resulting in unwanted sound propagation to areas where it is not intended, leading to inefficiencies in sound distribution and user experience.
Innovation Solution
The implementation of a display device with multiple sound generators, including main and sub-sound generators, strategically positioned on the display panel to output sound in specific directional modes, utilizing a camera sensor to determine user position and activate corresponding sound generators for targeted sound delivery, while a propagation blocking area and under-panel members help manage vibration propagation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If sound generators are mounted on the rear surface of the display panel, then the footprint of the overall display device is reduced, but sound directionality is compromised and unwanted sound propagation occurs
Solution Approach 1:
The sound generation function is divided into multiple independent sound generators (main sound generator and sub-sound generators) positioned at different locations on the display panel. Each sound generator can be independently controlled to direct sound toward specific viewing zones, thereby reducing unwanted sound propagation to areas where it is not intended while maintaining a compact form factor.
2Object-generated harmful factors
If multiple sound generators are positioned at different locations on the display panel, then sound directionality is improved, but device complexity increases
Solution Approach 1:
The display panel serves multiple functions: it acts as both the display surface and the sound generation surface. The sound generators are integrated into the display panel structure, utilizing the panel's existing components (such as the backlight unit or protective cover) as sound transmission surfaces. This multi-functionality reduces the need for separate sound projection mechanisms, thereby managing device complexity while achieving improved sound directionality.
3Object-generated harmful factors
If sound generators are integrated into the display panel, then sound directionality is enhanced, but manufacturing complexity increases
Solution Approach 1:
The sound generation components are merged with the display panel structure. The sound generators are positioned behind the display panel and utilize the panel's protective cover or backlight diffusion layer as a sound transmission surface. This merging eliminates the need for separate sound projection hardware, simplifying the manufacturing process while maintaining enhanced sound directionality.
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
This approach allows for precise sound directionality, enhancing user experience by ensuring maximum sound energy reaches the intended user while minimizing unwanted sound propagation, thus optimizing sound distribution and reducing noise interference.
Implementation Method 1
Such rear mounted sound generators vibrate the display panel itself to generate sound waves that propagate outward from the display panel towards the user
Data Source
AI summary
Provided are display devices and methods of driving the same. A display device may include: a display panel, a main sound generator and a sub-sound generator disposed on a surface of the display panel. The main sound generator outputs sound in a first directional mode, and each of the main sound generator and the sub-sound generator outputs sound in a second directional mode. Each directional mode may be a mode in which sound is directed towards a particular viewer's location.