Display Panel With Substrate-Based Vibrating Membrane Sound Generation
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Solution Overview
Problem
Existing display panels face challenges in achieving good sound generation effects without occupying excessive space, as sound generation units are often large or fixed in position, leading to suboptimal user experience.
Innovation Solution
The display panel integrates a vibrating membrane that serves as both the display assembly substrate and sound generation unit, with a support structure and exciter to drive vibration, allowing for flexible and rigid regions to optimize sound frequency response, and includes high-frequency and low-frequency sound generation assemblies for precise sound control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the volume of the sound generation unit is increased to achieve good sound generation effect, then the sound generation quality is improved, but the space occupied by the sound generation unit increases
Solution Approach 1:
The patent merges the display assembly substrate and the vibrating membrane into a single structure. The display assembly substrate serves dual functions: as the substrate for pixel components and as the vibrating membrane for sound generation. This integration eliminates the need for a separate sound generation unit, thereby reducing space occupation while maintaining sound generation quality.
Solution Approach 2:
The display assembly substrate is designed to perform multiple functions simultaneously: it serves as the structural substrate for display pixels and as the vibrating membrane for acoustic output. This multi-functionality allows the display panel to generate sound without requiring additional dedicated space for a separate sound generation unit.
2Volume of moving object
If the sound generation unit is disposed in a corner and/or edge region to reduce space occupation, then the space efficiency is improved, but the sound generation position becomes fixed and user hearing experience deteriorates
Solution Approach 1:
The patent divides the display panel into multiple sound generation regions, with each region containing a sound generation assembly. This segmentation allows sound generation units to be distributed across different locations (including center, edges, and corners) rather than confined to a single fixed position, providing spatial flexibility and improved hearing experience while maintaining space efficiency.
3Reliability
If a rigid substrate is used for the vibrating membrane to prevent partition vibrations, then the sound quality is improved, but the frequency response range is limited
Solution Approach 1:
The patent applies different rigidity characteristics to different regions of the vibrating membrane. The display assembly substrate can have varying rigidity properties in different areas, allowing certain regions to resist partition vibrations for improved sound quality while other regions maintain flexibility for broader frequency response. This local differentiation of mechanical properties resolves the contradiction between rigidity and frequency range.
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
This design reduces space occupation, enhances sound quality by preventing partition vibrations, and improves frequency response, enabling simultaneous high and low-frequency audio reproduction with improved directivity and reduced sound attenuation.
Implementation Method 1
the motion part vibrates to drive the vibrating membrane to vibrate
Implementation Method 2
the support structure includes a rigid support structure and an elastic support structure
Data Source
AI summary
A display panel and its fabricating method, wherein the display panel includes a display assembly and sound generation assemblies. The display assembly comprises a display assembly substrate and a plurality of pixel components. Each sound generation assembly comprises a vibrating membrane and an exciter. The exciter comprises a motion part in contact with the vibrating membrane and a drive part driving the motion part to vibrate, and the motion part vibrates to drive the vibrating membrane to vibrate. The display assembly substrate and the vibrating membrane are the same structure. The pixel components are disposed on a side of the vibrating membrane facing away from the exciter. A projection of the each sound generation assembly on the display assembly substrate covers projections of at least two pixel components on the display assembly substrate.