Integrated Display Panel Substrate for Compact 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 typically large or poorly positioned, leading to suboptimal user hearing experiences.
Innovation Solution
The display panel integrates a vibrating membrane as both the display assembly substrate and sound generation component, with a support structure and exciter system, allowing for compact sound generation units that can vibrate to produce sound, and includes varying rigidity regions for different frequency ranges.
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 substrate and sound generation vibrating membrane into a single integrated structure. The display substrate serves dual functions as both the display carrier and the sound generation vibrating membrane, eliminating the need for separate sound generation units and thereby reducing space occupation while maintaining sound generation quality.
Solution Approach 2:
The display substrate is designed to perform multiple functions simultaneously: it serves as the display carrier for pixel components and as the vibrating membrane for sound generation. This multi-functionality allows the same structure to fulfill both display and audio output roles, reducing the overall device footprint.
2Device complexity
If the sound generation unit is disposed in a fixed corner or edge region, then the structure is simplified, but the user hearing experience is degraded
Solution Approach 1:
The patent enables dynamic positioning of sound generation by allowing the vibrating membrane to be driven at different locations across the display substrate. The control system can dynamically select which region of the vibrating membrane to activate, enabling sound generation at multiple positions including center, corners, and edges, thereby providing flexible hearing experiences without increasing structural complexity.
Solution Approach 2:
The patent changes the spatial distribution parameter of sound generation by varying the drive signal parameters across different regions of the vibrating membrane. By controlling the excitation parameters (such as frequency and amplitude distribution) across different spatial zones, the system can optimize sound generation at different positions to match user preferences and usage scenarios.
3Reliability
If the entire vibrating membrane is made rigid to improve sound quality, then the sound generation effect is improved, but the flexibility and adaptability of the membrane is reduced
Solution Approach 1:
The patent applies different rigidity characteristics to different regions of the vibrating membrane. The display substrate is designed with varying mechanical properties in different zones, allowing certain regions to be more rigid for better sound quality while other regions maintain flexibility for adaptability. This local differentiation enables the membrane to optimize both sound quality and flexibility simultaneously.
Solution Approach 2:
The patent employs composite material structures in the display substrate to achieve both rigidity and flexibility. By combining materials with different mechanical properties in a composite structure, the vibrating membrane can exhibit region-specific characteristics that balance sound quality requirements with flexibility needs, enabling optimal performance across different functional zones.
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 integration reduces space occupation and enhances sound quality by enabling flexible and rigid substrate regions for optimal sound reproduction across frequency ranges, improving user experience.
Implementation Method 1
the motion part vibrates to drive the vibrating membrane to vibrate
Implementation Method 2
the elastic support structure is disposed on a side of the rigid support structure close to the vibrating membrane
Data Source
AI summary
A display panel, 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 overlaps projections of at least four pixel components on the display assembly substrate. The vibrating membrane is a flexible substrate or a rigid substrate.