Display Panel Sound Actuation for Forward Audio and Thin TVs
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional display apparatuses face challenges in directing sound towards the user while maintaining high sound quality, as external speakers often direct sound away from the viewer and interfere with surrounding reflections, and occupy space that restricts design and placement.
Innovation Solution
A display apparatus with a sound generating device integrated into the rear surface of the display panel, utilizing a bobbin and protection member to vibrate the panel and direct sound forward, and partitioning to separate sound outputs and improve adhesion strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an additional speaker is provided in the display apparatus, then sound can be supplied, but the sound advances toward the lower or rear portion instead of the front, disrupting user immersion and deteriorating sound quality
Solution Approach 1:
The patent combines the sound generating device with the display panel by integrating it onto the rear surface of the panel. The bobbin is directly coupled to the rear surface, causing the display panel itself to vibrate and generate sound that propagates forward toward the user, eliminating the need for separate external speakers and resolving the directional sound output issue
2Adaptability or versatility
If a speaker is included in the set apparatus, then sound function is provided, but it occupies space that restricts design and spatial disposition
Solution Approach 1:
The sound generating device is merged with the display panel structure, where the bobbin is positioned on the rear surface and the display panel itself serves as the sound generation element. This integration eliminates the need for separate speaker compartments, maintaining a thin profile and providing design flexibility while delivering sound functionality
Solution Approach 2:
The display panel serves dual functions: displaying images and generating sound. By making the panel itself capable of vibration-based sound generation through the integrated bobbin, the device achieves multi-functionality without requiring additional dedicated components, thus saving space and improving design adaptability
3Ease of operation
If the sound generating device is integrated into the display panel, then sound is directed toward the user, but adhesive strength between the device and panel must be improved
Solution Approach 1:
The sound generating device is segmented into distinct functional components: the bobbin (which contacts the display panel), the magnet assembly, and the protection member. This segmentation allows the bobbin to be specifically designed with optimal contact area and adhesion properties for bonding to the panel, while other components serve their respective functions without compromising the adhesive bond
4Object-affected harmful factors
If partitions are added to separate sound output areas, then sound quality is improved, but device complexity increases
Solution Approach 1:
The display panel is divided into a sound output area and a non-sound output area, with partitions strategically positioned to separate regions generating different sound characteristics. This segmentation allows independent optimization of sound generation zones while maintaining a relatively simple overall structure that leverages the existing panel geometry
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
The solution effectively directs sound towards the user, enhances sound quality by minimizing interference, and optimizes spatial design by eliminating the need for external speakers.
Implementation Method 1
a coil wound on an outer surface of the bobbin. One surface of the bobbin may be attached to a rear surface of the display panel.
Implementation Method 2
a sound generating device integrated into the rear surface of the display panel, utilizing a bobbin and protection member to vibrate the panel and direct sound forward
Data Source
AI summary
A display apparatus includes a display panel configured to display an image by emitting light, and a sound generating device on a rear surface of the display panel. The sound generating device includes a bobbin, and a protection member on the bobbin.