Display Panel Sound Generation via Rear Vibration
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Solution Overview
Problem
Conventional display apparatuses face challenges in directing sound towards the user, resulting in reduced immersion experience and deteriorated sound quality due to the placement of speakers, which also occupy space and increase thickness, limiting design flexibility.
Innovation Solution
A display apparatus with a sound generation device that includes a magnetic circuit unit and a coil unit on the rear surface, vibrating the display panel to direct sound towards the front, thereby enhancing sound quality and reducing the size and thickness of the sound generation device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a speaker is provided in a display apparatus, then sound can be generated, but the sound advances toward a lower or rear portion instead of the front, reducing user immersion and sound quality
Solution Approach 1:
The patent inverts the conventional speaker placement by positioning the sound generation device on the rear surface of the display panel rather than the front. The vibration element vibrates the rear surface of the display panel to generate sound that propagates forward through the panel, reversing the traditional acoustic path and enabling sound to travel toward the user's position in front of the display.
Solution Approach 2:
The display panel itself serves as an intermediary medium for sound transmission. Instead of placing a speaker that directly projects sound forward, the patent uses the display panel as a vibration transmission medium, where the vibration element generates vibrations that are transmitted through the panel to produce sound waves that travel toward the user.
2Ease of operation
If a speaker is included in a set apparatus, then sound generation is enabled, but the speaker occupies space and increases thickness, imposing restrictions on design and spatial disposition
Solution Approach 1:
The patent merges the sound generation function with the display panel structure. The vibration element is integrated into the rear surface of the display panel, and the display panel itself serves as both the visual display medium and the sound transmission medium, eliminating the need for a separate speaker component and reducing overall device volume.
Solution Approach 2:
The display panel is given multiple functions: it serves as both the light-emitting/display surface and the sound transmission medium. This multi-functionality eliminates the need for dedicated speaker space, allowing the same structural component to fulfill both visual and acoustic roles.
3Ease of operation
If a speaker is included in a set apparatus, then sound can be output, but the thickness is increased due to the size of the speaker
Solution Approach 1:
The patent extracts the sound generation function from a traditional speaker component and repositions it to the rear surface of the display panel. By using the display panel itself as the sound transmission medium rather than requiring a separate speaker housing, the design eliminates the need for additional thickness that would be required to accommodate a conventional speaker.
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 towards the user, improving sound quality and allowing for more design flexibility by eliminating the need for external speakers, while minimizing the size and thickness of the sound generation device.
Implementation Method 1
a magnetic circuit unit and a coil unit, which vibrate the display panel to generate sound
Data Source
AI summary
A display apparatus includes a display panel configured to display an image; a supporting member on a rear surface of the display panel; a magnetic circuit unit in the supporting member, the magnetic circuit unit configured to generate a magnetic loop; and a coil unit on the rear surface of the display panel. The magnetic circuit unit and the coil unit are configured to vibrate the display panel to generate sound.