Rollable Display Panel Vibration Sound Direction
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Solution Overview
Problem
Rollable display apparatuses face challenges in sound quality due to sound interference from surrounding environments, leading to a degraded audio experience for viewers.
Innovation Solution
A display apparatus with a vibration device integrated into the rolling module, which vibrates the display panel when unfolded, directing sound forward and enhancing audio fidelity and immersion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If sound is output from a sound device in a rollable display apparatus, then sound is generated, but sound quality is degraded due to interference from sound reflected by wall or ground
Solution Approach 1:
The patent extracts the sound generation function from a separate sound device and integrates it directly into the display panel structure. The display panel itself becomes the vibration source, eliminating the need for traditional sound devices positioned at the rear or bottom of the housing, thereby avoiding sound reflection interference from walls and ground.
Solution Approach 2:
The patent introduces a vibration device as an intermediary between the power source and the display panel. This vibration device directly vibrates the display panel to generate sound, serving as a mediator that transfers vibrational energy efficiently while positioning the sound source at the front of the display rather than the rear, thus avoiding environmental sound interference.
2Reliability
If a vibration device is added to the rolling module to vibrate the display panel, then sound accuracy and immersion are improved, but device complexity increases
Solution Approach 1:
The patent merges the sound generation function with the existing rolling module structure. The vibration device is integrated into the rolling module, and the display panel serves dual purposes as both the display medium and the sound-generating vibration plate, reducing the need for separate sound output components.
Solution Approach 2:
The display panel is designed to serve multiple functions: it acts as both the image display surface and the sound-generating vibration plate. This multi-functionality eliminates the need for separate sound devices, thereby improving sound accuracy without proportionally increasing device complexity.
3Object-affected harmful factors
If the display panel is used as a vibration plate for sound output, then sound is directed forward, but the display panel structure must be modified
Solution Approach 1:
The patent introduces a vibration device that dynamically activates the display panel for sound generation only when needed, rather than requiring the display panel structure to be permanently modified for static sound output. This allows the display panel to maintain its primary display function while temporarily serving as a sound-generating vibration plate.
Solution Approach 2:
The patent replaces traditional mechanical sound devices (speakers, sound boxes) with a vibration-based system that uses the display panel itself as the sound-generating element. This substitution eliminates the need for separate sound output mechanisms and their associated mounting structures, simplifying the overall manufacturing process.
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 vibration device improves sound accuracy and viewer immersion by directing sound forward, mitigating environmental interference and enhancing audio quality in rollable display setups.
Implementation Method 1
a vibration device on the structure, the vibration device configured to vibrate the display panel when the display panel is unwound from the roller and the structure is unfolded
Implementation Method 2
The vibration device includes a vibration generation device and a plurality of magnetic plates on the vibration generating device
Data Source
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AI summary
A display apparatus includes a display panel configured to display an image and including a plurality of pixels, a housing module including a roller therein such that the display panel is configured to be wound on the roller to be housed in the housing module or unwound from the roller to extend from the housing module, a rolling module including a structure connected to the display panel and configured to wind or unwind the display panel according to a folding or unfolding of the structure, and a vibration device on the structure, the vibration device configured to vibrate the display panel in an unwound state.