Display Sound Generation via Front-Vibration Back Cover
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Solution Overview
Problem
Conventional display apparatuses suffer from deteriorated sound quality due to sound interference from walls and floors, making it difficult to accurately direct sound to viewers and reducing immersion.
Innovation Solution
A display apparatus with a modular sound generating unit integrated into a back cover, featuring a compartment with partition walls and a vibration unit that attaches to the rear surface of the display module, allowing sound to be directed forward and improving sound quality without increasing the device's thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If sound is output from the rear or bottom side of the display panel, then the sound device can be integrated into the display structure, but sound quality deteriorates due to interference from walls and floors
Solution Approach 1:
Instead of outputting sound from the conventional rear or bottom side of the display panel, the patent inverts the sound output direction to the front side of the display panel. The vibration unit vibrates the front surface of the display panel to generate sound waves that propagate forward, avoiding interference from walls and floors while maintaining integration into the display structure.
2Ease of manufacture
If a modular sound generating unit is integrated into the back cover, then assembly and maintenance become easier, but the structural complexity of the back cover increases
Solution Approach 1:
The back cover is segmented into an upper substrate and a lower substrate with a compartment formed between them. The sound generating unit is installed in this compartment, allowing modular assembly and maintenance while distributing the structural complexity across separate components rather than a monolithic structure.
Solution Approach 2:
The sound generating unit is nested within the compartment formed between the upper and lower substrates of the back cover. This nesting approach integrates the sound device into the existing back cover structure without requiring additional external components, balancing modularity with structural efficiency.
3Length of moving object
If the display apparatus maintains a thin profile, then portability and aesthetics are improved, but space for sound generation components is limited
Solution Approach 1:
The patent utilizes the vertical dimension between the upper and lower substrates of the back cover to create a compartment for housing the sound generating unit. This approach extracts space from the thickness direction rather than increasing overall device thickness, maintaining a thin profile while providing adequate volume for sound generation components.
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 to the front of the display panel, enhancing sound quality and viewer immersion while maintaining a thin profile and allowing for easy assembly and maintenance.
Implementation Method 1
a vibration unit (530) mounted inside the unit housing (510)... an upper surface of the vibration unit (530) is attached to the rear surface of the display module
Implementation Method 2
a sound generating unit (500)... allowing sound to be directed forward and improving sound quality
Data Source
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Figure 3
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AI summary
The present disclosure relates to a display apparatus, especially having a display panel generating sounds. A display apparatus according to the present disclosure comprises: a display module; a back cover disposed at a rear surface of the display module; a compartment provided inside the back cover; a fixing element provided inside the compartment; a sound generating unit inserted into the compartment and installed by the fixing element; and an adhesive element attaching an upper surface of the sound generating unit and the rear surface of the display module.