Actuator Fixing Device for Panel Vibration Sound Generation
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Solution Overview
Problem
Conventional display devices with integrated speakers suffer from mismatched sound directionality, degraded sound quality due to interference with surrounding surfaces, and occupy excessive space, limiting design flexibility and immersion experience.
Innovation Solution
A panel vibration type display device with multiple sound-generating actuators adjacent to each other, supported by a cover bottom and an actuator fixing device that includes reinforcing ribs to maintain structural integrity and optimize sound pressure distribution, while minimizing thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If a separate speaker is disposed on the rear part or lower part of a display panel, then sound can be generated, but the sound directionality is mismatched and does not progress toward the viewer, degrading immersion experience
Solution Approach 1:
The patent merges the speaker function with the display panel by integrating actuators directly into the panel structure. The actuators are disposed on the rear surface of the display panel and directly vibrate the panel to generate sound, eliminating the need for a separate speaker component and ensuring sound progresses directly toward the viewer from the correct location.
Solution Approach 2:
The display panel serves dual functions: displaying images and generating sound. The actuators integrated into the panel enable the panel itself to function as both a visual display and an acoustic source, eliminating the need for separate audio components and improving sound directionality.
2Object-generated harmful factors
If a separate speaker is disposed on the rear part or lower part of a display panel, then sound can be generated, but sound quality is degraded due to interference with sound reflected by walls, floors, or other surfaces
Solution Approach 1:
By integrating the actuators directly into the display panel, the sound source is positioned at the correct location (the front of the display area) rather than on the rear or lower parts. This eliminates sound reflection interference from walls and floors, maintaining sound quality.
3Object-generated harmful factors
If a separate speaker is used in a set device, then sound can be generated, but the speaker occupies an undesirably large amount of space, imposing restrictions on design and spatial disposition
Solution Approach 1:
The speaker function is merged with the display panel structure, eliminating the need for a separate speaker component. The actuators are integrated into the panel's rear surface, significantly reducing the space required for audio functionality and improving design flexibility.
Solution Approach 2:
The separate speaker component is extracted from the device architecture and its functionality is integrated into the display panel itself. This eliminates the need for dedicated speaker space and allows for more flexible spatial disposition of other device components.
4Object-generated harmful factors
If multiple sound-generating actuators are disposed adjacent to each other on the display panel, then sound pressure is enhanced, but the structural integrity of the support structure may be compromised
Solution Approach 1:
The support structure is segmented into multiple regions, each capable of supporting actuators. The rear surface of the display panel is divided into multiple support locations, allowing actuators to be disposed adjacent to each other while maintaining structural integrity through distributed support points.
Solution Approach 2:
The support structure is designed with locally optimized properties at different positions. Reinforcement is provided specifically at areas where actuators are mounted, while other areas maintain their original characteristics. This allows multiple actuators to be supported without compromising overall structural integrity.
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 enhances sound pressure and maintains sound characteristics across the entire frequency band, improving sound localization and reducing spatial constraints, thereby enhancing the user experience and design flexibility.
Implementation Method 1
a plurality of sound-generating actuators supported by the cover bottom and configured to vibrate the display panel to generate sound
Implementation Method 2
an actuator fixing device that includes reinforcing ribs to maintain structural integrity and optimize sound pressure distribution
Data Source
Figure 1~2B
Figure 3~4A
Figure 4B~5
AI summary
Provided are an actuator fixing device and a panel vibration type sound-generating display device including the same. A display device includes: a display panel (100) configured to display an image, a cover bottom (300) configured to cover the display panel (100), and a plurality of sound-generating actuators (200, 200') supported by the cover bottom (300), the sound-generating actuators (200, 200') being configured to vibrate the display panel (100) to generate sound, at least two of the sound-generating actuators (200, 200') being adjacent to each other.