Display Panel Vibration Sound Separation Partition
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Solution Overview
Problem
Conventional display devices with integrated speakers suffer from degraded sound quality due to sound interference with surrounding surfaces and poor sound localization, as the sound is not directly oriented towards the viewer, and the speaker occupies excessive space, limiting design flexibility.
Innovation Solution
A display device with sound generating actuators that vibrate the display panel to produce sound, utilizing a sound separating partition with bent portions and protruding confining portions to enhance sound pressure and separation, allowing for multiple sound channels and improved spatial arrangement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If a speaker is disposed at a rear part or lower part of the display panel, then the display device can output sound, but the sound quality is degraded due to interference with sound reflected by walls, floors, or other surfaces
Solution Approach 1:
The patent extracts the harmful reflected sound from the system by introducing a sound absorbing member that selectively absorbs reflected sound waves while allowing direct sound to reach the listener. This separates the direct sound path from the reflected sound path, eliminating the interference problem.
Solution Approach 2:
The sound absorbing member acts as an intermediary element between the speaker and the listener, selectively interfering with reflected sound waves to absorb them while leaving direct sound waves unaffected. This mediator resolves the contradiction by differentiating between harmful reflected sound and useful direct sound.
2Object-generated harmful factors
If a speaker is disposed at a rear part or lower part of the display panel, then the display device can output sound, but sound localization is degraded due to diffraction
Solution Approach 1:
The patent removes the harmful diffracted sound components by using the sound absorbing member to selectively absorb diffracted waves while preserving direct sound waves. This extraction of harmful diffraction effects restores accurate sound localization.
3Object-generated harmful factors
If a speaker is disposed at a rear part or lower part of the display panel, then the display device can output sound, but the speaker occupies an undesirably large amount of space
Solution Approach 1:
The patent merges the sound absorbing function with the existing display panel structure, integrating the sound absorbing member into the panel assembly rather than requiring a separate speaker enclosure. This combination eliminates the need for additional space while maintaining sound quality.
4Object-generated harmful factors
If sound is output by vibrating the entire display panel, then the display device can generate sound, but only a single type of sound can be output
Solution Approach 1:
The patent segments the display panel into multiple independent vibration zones, each controlled by separate actuators. This segmentation allows different regions of the panel to vibrate independently, enabling multiple types of sounds to be output simultaneously with different characteristics.
Solution Approach 2:
The patent applies local quality by enabling different regions of the display panel to have different vibration characteristics controlled by separate actuators. Each local region can produce different sound types, frequencies, or intensities, providing versatile sound output capabilities.
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 reduces sound pressure reduction caused by standing waves, enhances sound localization, and allows for compact, multi-channel sound output, improving the audio experience without the need for external speakers.
Implementation Method 1
sound generating actuators which vibrate the display panel while being in contact with one side of the display panel to thereby generate a sound
Implementation Method 2
a sound separating partition portion that surrounds each of the plurality of sound output areas, and is disposed in contact with the display panel and the back support portion to define an air gap space inside each of the sound output areas
Data Source
Figure 1~2A
Figure 2B~3A
Figure 3B~4A
AI summary
The present embodiments relates to a display panel configured to display images, a plurality of sound generating actuators in a plurality of sound output areas, the sound generating actuators configured to vibrate the display panel to generate sound, and a partition that is between each of the plurality of sound output areas and surrounds at least one of the plurality of sound output areas.