Piezoelectric Display Panel Vibration for Sound and Dent Repair
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Solution Overview
Problem
Current display apparatuses face challenges in achieving lightness and thinness while ensuring sound is directed towards the viewer, and they are prone to dents that affect image quality due to the fragility of piezoelectric devices and external impacts.
Innovation Solution
A display apparatus with a vibration apparatus at its rear surface that vibrates to output sound forward and restore dents caused by external pressure, utilizing a piezoelectric device to enhance sound quality and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a speaker is embedded in the apparatus to output sound, then sound output capability is improved, but the apparatus thickness increases and lightness is compromised
Solution Approach 1:
The patent combines the sound output function with the display panel by making the display panel itself serve as the sound output element. The display panel is designed to vibrate in response to audio signals, eliminating the need for a separate speaker component and thereby reducing apparatus thickness while maintaining sound output capability.
Solution Approach 2:
The display panel is given multiple functions: it serves both as the visual display surface and as the sound output device. By enabling the display panel to perform both functions, the patent eliminates the need for additional dedicated sound output components, thus reducing overall apparatus thickness.
2Device complexity
If sound is output toward the rear surface or lateral surface, then the apparatus structure is simplified, but the sound does not reach the viewer effectively
Solution Approach 1:
The patent implements dynamic sound output by enabling the display panel to vibrate in response to audio signals. This vibration creates sound waves that propagate forward toward the viewer, dynamically adjusting sound direction based on the displayed content and audio signals, thereby improving sound directional quality without complicating the overall structure.
Solution Approach 2:
The patent utilizes mechanical vibration of the display panel to generate sound. The display panel vibrates in response to audio signals, creating sound waves that travel toward the viewer. This approach simplifies the sound output structure by using the display panel itself as the vibration source, while effectively directing sound forward.
3Length of moving object
If piezoelectric devices are used to reduce thickness, then the apparatus becomes thinner, but the devices are fragile and easily damaged by external impact
Solution Approach 1:
The patent applies a protective layer on the display panel surface that serves as a cushion against external impacts. This protective layer is designed to absorb and distribute impact forces, preventing damage to the fragile piezoelectric devices underneath while maintaining the thin profile of the apparatus.
Solution Approach 2:
The patent uses composite material structures that combine the piezoelectric devices with protective and support layers. This composite structure provides both the thickness reduction benefit of piezoelectric devices and the durability needed to protect them from external impacts, achieving a balance between thinness and reliability.
4Weight of moving object
If thin and flexible materials are used to achieve lightness, then the apparatus becomes lighter and thinner, but dents occur more easily under external pressure
Solution Approach 1:
The patent implements a protective structure that acts as a cushion against external pressure before it can cause dents. This protective layer is integrated into the thin and flexible design, providing dent resistance while maintaining the lightweight and thin characteristics of the apparatus.
Solution Approach 2:
The patent uses flexible shell structures and thin films that are designed to be resilient against external pressure. These flexible components can deform slightly under pressure and then return to their original shape, preventing permanent dents while maintaining the lightweight and thin design of the apparatus.
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 enables improved sound directional quality and dent restoration, enhancing both the auditory experience and the appearance of the display apparatus by directing sound forward and maintaining the display's integrity.
Implementation Method 1
a vibration apparatus at a rear surface of the display member, the vibration apparatus vibrates the display member by a driving signal based on a driving mode
Implementation Method 2
the vibration apparatus vibrates the display member by a driving signal based on a driving mode and vibrates the display member by a vibration signal based on a vibration mode
Data Source
AI summary
An apparatus can include a display member configured to display an image and a vibration apparatus disposed at a rear surface of the display member. Also, the vibration apparatus is configured to vibrate the display member using a driving signal based on a driving mode, and vibrate the display member using a vibration signal based on a vibration mode.