Display Panel Vibration Audio With Peripheral PCB Protection
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Solution Overview
Problem
Display apparatuses suffer from degraded sound quality due to sound interference and reduced immersion experience, as sound output travels in unintended directions, and vibration noise and damage to driving circuits are common issues.
Innovation Solution
A display apparatus with a vibration apparatus that generates sound forwardly, using a display panel as a vibration plate to enhance sound quality and minimize vibration-induced noise and circuit damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sound is output from a sound device in general display apparatuses, then sound can be output, but sound quality is degraded due to interference between sounds reflected from wall and ground
Solution Approach 1:
The patent extracts the sound output function from a traditional sound device and relocates it to the display panel itself, which acts as a vibration plate. This eliminates the need for separate sound output structures and prevents sound interference by directing sound forwardly through the display panel's vibration.
Solution Approach 2:
The display panel serves multiple functions: it displays images and simultaneously acts as a vibration plate for sound output. This multi-functionality integrates the sound output mechanism into the existing display structure, avoiding additional components that could cause interference.
2Reliability
If a vibration apparatus is used to generate sound forwardly, then sound quality is enhanced, but friction noise is generated by vibration of the vibration apparatus
Solution Approach 1:
The patent merges the vibration apparatus with the display panel structure, where the display panel itself serves as the vibration plate. This integration eliminates separate vibrating components that would generate friction noise, as the display panel's large surface area vibrates to produce sound without requiring additional mechanical parts.
3Ease of manufacture
If the printed circuit board is disposed at the center of the rear surface, then driving circuit can be connected, but vibration from the vibration apparatus causes damage to the driving circuit
Solution Approach 1:
The patent positions the printed circuit board asymmetrically at one periphery of the rear surface rather than at the center. This asymmetric placement strategically locates the circuit board in a region less affected by vibration from the vibration apparatus, reducing vibration-induced damage while maintaining electrical connectivity.
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
Improves sound quality and immersion experience by directing sound forwardly, while reducing friction noise and preventing damage to the driving circuit, thereby enhancing reliability.
Implementation Method 1
a vibration apparatus disposed at the rear surface of the display device and configured to vibrate the display device
Data Source
AI summary
A display apparatus includes a display device including a display panel configured to display an image and a driving circuit part including a printed circuit board connected to the display panel, a first cover disposed at a rear surface of the display device, a first coupling member disposed between the first cover and the printed circuit board, and a vibration apparatus disposed at the rear surface of the display device and configured to vibrate the display device. The printed circuit board is disposed at one periphery of a rear surface of the first cover.