Display Panel Sound Direction via Rear Vibration Modules
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional display apparatuses face challenges in delivering accurate sound output due to sound interference from walls and floors, leading to degraded sound quality and reduced viewer immersion.
Innovation Solution
A display apparatus design incorporating a display module with a rear cover featuring first and second vibration generating modules, which vibrate to direct sound waves forward, utilizing a Helmholtz resonator and sound pressure amplification to enhance sound quality and immersion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If sound output is directed to rearward or downward direction, then sound device structure is simplified, but sound quality is degraded due to interference from walls and ground
Solution Approach 1:
The patent inverts the conventional sound output direction by directing sound waves forward through the display panel instead of allowing them to travel rearward or downward. The vibration generating module vibrates the display panel to generate sound waves that propagate forward, eliminating interference from walls and ground while maintaining structural simplicity.
2Object-affected harmful factors
If sound output is directed forward through display panel, then sound quality and immersion experience are improved, but device complexity increases due to vibration generating module integration
Solution Approach 1:
The patent merges the sound output function with the display panel by integrating the vibration generating module directly into the display apparatus. The vibration generating module vibrates the display panel to generate sound waves, combining audio and visual functions into a single integrated system that improves sound quality without requiring separate sound output devices.
Solution Approach 2:
The display panel serves multiple functions: it displays images and simultaneously acts as a sound output device. The vibration generating module enables the display panel to generate sound waves, making it a multi-functional component that reduces the need for separate audio hardware while improving overall system performance.
3Power
If vibration generating module is positioned close to display panel, then sound pressure is amplified, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies local quality by positioning the vibration generating module at specific locations on the display panel where it can effectively generate sound waves. The module is configured to vibrate specific regions of the display panel, optimizing sound pressure in the forward direction while allowing flexibility in overall positioning to accommodate manufacturing tolerances.
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 waves to a forward region, improving sound quality and viewer immersion by minimizing interference and optimizing sound pressure levels across various frequency bands.
Implementation Method 1
a first vibration generating module in a first rear region of the rear cover; and a second vibration generating module in a second rear region of the rear cover
Implementation Method 2
utilizing a Helmholtz resonator and sound pressure amplification to enhance sound quality and immersion
Data Source
AI summary
A display apparatus includes a display module that includes a display panel and is configured to display an image. A rear cover is on a rear surface of the display module. A first vibration generating module is in a first rear region of the rear cover, and a second vibration generating module in a second rear region of the rear cover. The rear cover includes a first hole that overlaps the first vibration generating module, and a second hole that overlaps the second vibration generating module.