Display Panel Vibration Generator Magnet Coupling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display devices face challenges in efficiently outputting sound without externally exposing sound generation components, which limits design flexibility and display area expansion, especially in devices like smartphones where sound output is required without a speaker at the front surface.
Innovation Solution
A display device design incorporating a magnet and a vibration generator with a magnetic layer and vibration generating layer, where the vibration generator is coupled to the magnet and includes a planar coil portion with polarity switchability, allowing for sound output without external exposure, and enhancing sound quality by using a magnetic field to vibrate the display panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a traditional speaker is used for sound output, then sound generation function is achieved, but display area is reduced and device design flexibility is limited
Solution Approach 1:
The patent merges the sound generation function with the display panel by using the display panel itself as the vibration surface. The vibration generator couples the display panel to generate sound waves, eliminating the need for a separate speaker and thus maximizing the display area while maintaining sound output capability.
Solution Approach 2:
The display panel serves dual functions: visual display and sound generation. By integrating the vibration generator with the display panel, the panel becomes a multi-functional component that both displays images and produces sound, thereby eliminating the need for dedicated speaker components.
2Ease of operation
If sound generation components are externally exposed, then sound output capability is achieved, but device aesthetics and design flexibility are compromised
Solution Approach 1:
The vibration generator is integrated within the display device structure, coupling the display panel to generate sound. This internal integration eliminates the need for externally exposed speakers, maintaining device aesthetics while preserving sound output capability through the display panel's vibration.
3Area of stationary object
If display panel is used as vibration surface, then display area is maximized and design flexibility is improved, but sound quality especially low-frequency output may be insufficient
Solution Approach 1:
The patent employs mechanical vibration by coupling the display panel to a vibration generator that induces vibrations in the panel. This mechanical vibration approach enables the display panel to function as an efficient sound generation surface, improving low-frequency sound characteristics while maintaining the maximized display area.
Solution Approach 2:
The vibration generator adjusts vibration parameters such as frequency and amplitude to optimize sound quality. By controlling the vibration characteristics of the display panel, the system achieves improved low-frequency sound output while maintaining the panel's primary display function and maximized area.
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
Enables effective sound output without the need for external speakers, allowing for increased display area and improved sound quality by utilizing the display panel as a vibration surface, with the magnetic field amplifying low-frequency sound characteristics.
Implementation Method 1
enhancing sound quality by using a magnetic field to vibrate the display panel
Implementation Method 2
the vibration generator comprises a magnetic layer including a planar coil portion and polarity switchable with an applied current
Data Source
AI summary
A display device, includes: a display panel including a pixel array layer, a panel lower member disposed under the display panel, a first magnet disposed under the panel lower member and having a first area, a vibration generator coupled to one surface of the first magnet and having a second area larger than the first area; and a second magnet overlapping the first magnet in a thickness direction and spaced apart from the first magnet in the thickness direction.