Display Panel Vibration Speaker Using Particle-Based Electrodes
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Solution Overview
Problem
Existing display apparatuses face challenges with speaker placement, which restricts design and compromises sound quality due to sound interference, affecting viewer immersion.
Innovation Solution
A vibration device is integrated into the display apparatus, utilizing a vibration portion with conductive and carbon particles in electrode portions to generate sound by vibrating the display panel, improving sound pressure level characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If a separate speaker is installed in the display apparatus, then sound output is provided, but the design space arrangement is restricted and sound quality is deteriorated due to sound interference
Solution Approach 1:
The patent merges the speaker function with the display panel by using the display panel itself as the vibration source for sound output. The display panel is driven to vibrate in response to audio signals, eliminating the need for a separate speaker component. This integration resolves the contradiction by removing the harmful sound interference from a separate speaker while maintaining design flexibility.
Solution Approach 2:
The display panel is given multiple functions: it serves both as the visual display interface and as the acoustic output device. By making the display panel universal (serving dual purposes), the patent eliminates the need for a dedicated speaker, thereby improving sound quality by removing the source of interference while preserving design space arrangement flexibility.
2Ease of manufacture
If sound output moves backwards or downwards from the display apparatus, then speaker placement is simplified, but sound quality is deteriorated due to interference between sounds reflected from wall or ground
Solution Approach 1:
Instead of having sound output move backwards or downwards from a separate speaker, the patent inverts the approach by having the display panel itself vibrate to produce sound output in the forward direction. This inversion of the sound output direction and source eliminates the harmful reflections from walls and ground that occur with traditional speaker placement.
Solution Approach 2:
The patent replaces the traditional mechanical speaker system with a direct vibration-based acoustic system using the display panel. By substituting the mechanical speaker with a vibration-driven display panel, the system eliminates sound reflection interference while maintaining ease of manufacture through the existing display panel structure.
3Object-generated harmful factors
If a separate speaker is used, then sound output is achieved, but device complexity increases and viewer immersion is reduced
Solution Approach 1:
The patent combines the speaker function into the display panel structure, eliminating the need for a separate speaker component. This merging reduces device complexity by removing the additional speaker integration requirements while simultaneously resolving sound interference issues.
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
Enhances sound quality and pressure levels by eliminating the need for separate speakers, allowing for improved acoustic performance and viewer immersion.
Implementation Method 1
a vibration portion, a first electrode portion disposed at a first surface of the vibration portion, a second electrode portion disposed on a second surface of the vibration portion
Data Source
AI summary
A vibration device can include a vibration portion, a first electrode portion disposed on a first surface of the vibration portion, and a second electrode portion disposed on a second surface of the vibration portion. Also, each of the first electrode portion and the second electrode portion includes a conductive metal particle and a piezoelectric nanoparticle.