Display Panel and PCB Vibration for Surround Sound
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Solution Overview
Problem
Display apparatuses struggle to produce realistic and immersive surround sound, limiting viewer immersion due to their inability to effectively output multichannel stereo sound.
Innovation Solution
A display apparatus design that utilizes a display panel and a printed circuit board as sound vibration plates, with integrated vibration devices to generate sound in multiple directions, creating a surround sound environment while reducing thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a display apparatus uses a conventional sound device to output sound, then the structure is simple, but the sound output capability is limited and cannot provide realistic surround sound
Solution Approach 1:
The display panel and printed circuit board are made to serve dual functions: displaying images and outputting sound. The display panel acts as both a visual display device and a sound vibration plate, while the PCB serves as both a circuit board and a sound output structure. This multi-functionality enables surround sound capability without adding dedicated sound output components, thus improving sound output capability while maintaining structural simplicity.
Solution Approach 2:
The display apparatus uses its own existing structures (display panel and PCB) to generate sound, rather than relying on separate sound output devices. The display panel and PCB vibrate themselves to produce sound waves, effectively making the display apparatus self-sufficient for both visual and auditory output, thereby enhancing sound capability without increasing overall device complexity.
2Length of moving object
If the display apparatus thickness is reduced, then the device becomes more compact, but the sound output capability is compromised
Solution Approach 1:
The display panel and PCB perform dual functions as both display components and sound vibration plates. By utilizing the existing structural integrity and surface area of these components for sound generation, the design eliminates the need for additional thickness to accommodate separate sound output mechanisms, thus maintaining reduced thickness while achieving effective sound output capability.
Solution Approach 2:
The sound output is achieved by utilizing the surface area and structural properties of the display panel and PCB in a different dimensional context. Instead of adding thickness for sound output, the invention uses the existing two-dimensional structures to generate three-dimensional sound waves, effectively decoupling sound output capability from device thickness.
3Adaptability or versatility
If the display apparatus outputs sound in multiple directions, then the surround sound environment is improved, but the device complexity increases
Solution Approach 1:
The sound output function is segmented across multiple existing components: the display panel and multiple PCBs. Each PCB can output sound in different directions, and by coordinating the vibration of these segmented components, the system achieves surround sound capability without requiring a single complex sound output mechanism, thus improving surround sound capability while maintaining relatively simple device structure.
Solution Approach 2:
Multiple existing components (display panel and PCBs) are made to serve the additional function of directional sound output. Each component can independently contribute to sound generation in specific directions, creating a surround sound environment through the coordinated operation of these multi-functional elements, thereby achieving enhanced sound capability without proportionally increasing device complexity.
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
Enhances viewer immersion by providing a surround sound experience through directional sound output without increasing the thickness of the display apparatus.
Implementation Method 1
a first vibration device disposed at a rear surface of the display panel, and a second vibration device disposed at a rear surface of the printed circuit board
Data Source
AI summary
A display apparatus includes a display panel configured to display an image, a circuit part including a printed circuit board disposed spaced apart from a first portion of the display panel and connected to the display panel, a first vibration device disposed at a rear surface of the display panel, and a second vibration device disposed at a rear surface of the printed circuit board.