Display Panel Vibration Sound Output for Interference Reduction
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Solution Overview
Problem
Conventional display apparatuses suffer from degraded sound quality due to sound interference from walls and floors, which reduces the immersion experience for viewers.
Innovation Solution
A display apparatus incorporating a display module with a panel guide and a rear cover featuring first and second vibration generating modules, where the first module vibrates the center portion of the display panel to produce a low-pitched sound band and the second module vibrates the periphery to produce a middle-high or high-pitched sound band, enhancing sound output and immersion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If sound is output from a sound device in conventional display apparatuses, then sound can be heard, but sound quality is degraded due to interference between sounds reflected from walls and the ground
Solution Approach 1:
Instead of outputting sound from the rear or bottom of the display panel toward the wall and ground, the patent inverts the sound output direction by making the front surface of the display panel itself vibrate to emit sound forward, away from reflective surfaces. This is achieved by using vibration generating modules that directly vibrate the display panel's front surface, eliminating the problem of sound reflection interference.
Solution Approach 2:
The patent introduces vibration generating modules as intermediaries between the sound source and the display panel. These modules convert electrical signals into mechanical vibrations that directly move the display panel's front surface, serving as a mediator to transfer sound energy without relying on traditional speaker placement that causes reflection interference.
2Device complexity
If sound is output toward rearward or downward regions, then sound device structure is simple, but immersion experience of viewer is reduced
Solution Approach 1:
The patent makes the display panel serve multiple functions: it acts as both the visual display surface and the sound emission surface. By integrating vibration generating modules into the display panel structure, the panel simultaneously performs image display and sound output, eliminating the need for separate rear-mounted or bottom-mounted speakers and improving immersion without significantly increasing structural complexity.
Solution Approach 2:
The patent employs mechanical vibration of the display panel's front surface to generate sound waves that propagate forward toward the viewer. Vibration generating modules convert electrical audio signals into mechanical oscillations that directly move the panel surface, creating sound emission in the forward direction that enhances viewer immersion while maintaining relatively simple device structure.
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 provides improved sound quality and increased viewer immersion by accurately directing sound waves, eliminating interference and enhancing the harmonization of image and sound experience.
Implementation Method 1
a first vibration generating module in a first portion of the rear cover, the first vibration generating module being configured to vibrate a center portion of the display panel
Implementation Method 2
a second vibration generating module in a second portion of the rear cover, the second vibration generating module being configured to vibrate a periphery portion of the display panel
Data Source
AI summary
Disclosed is a display apparatus for transferring an accurate sound. The display apparatus includes a display module including a display panel configured to display an image, a panel guide configured to support a rear periphery portion of the display panel, a rear cover configured to support the panel guide and to cover a rear surface of the display module, a first vibration generating module in a first portion of the rear cover, the first vibration generating module being configured to vibrate a center portion of the display panel, and a second vibration generating module in a second portion of the rear cover, the second vibration generating module being configured to vibrate a periphery portion of the display panel.