Display Panel Sound Generation via Vibration
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Solution Overview
Problem
Conventional display apparatuses face issues with sound quality due to speakers directing sound away from the viewer and interfering with reflections from walls or floors, and occupy valuable space, limiting design and placement options.
Innovation Solution
A display apparatus with an integrated sound generating device that uses a magnet, bobbin, coil, and damper configuration to vibrate the display panel, directing sound towards the viewer and enhancing sound quality while minimizing space usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a separate speaker is installed in a display apparatus, then sound can be provided, but the speaker occupies valuable space and directs sound away from the viewer
Solution Approach 1:
The patent merges the sound generation function with the display panel by integrating a speaker behind the display panel, allowing the display panel itself to serve as the sound radiation surface. This eliminates the need for separate speaker housings and directs sound toward the viewer while saving space.
Solution Approach 2:
The patent transitions the sound radiation from a traditional forward-facing speaker to a rear-facing speaker that radiates sound through the display panel. This dimensional repositioning allows sound to be directed toward the viewer without occupying additional front space.
2Ease of manufacture
If a speaker directs sound toward the rear surface or region under the display panel, then space is saved, but sound quality is degraded due to interference from reflections
Solution Approach 1:
The patent converts the potential harm of sound reflections by positioning the speaker to radiate sound through the display panel directly toward the viewer. The display panel structure itself becomes beneficial by providing a controlled radiation surface that reduces unwanted reflections from walls and floors.
3Adaptability or versatility
If a speaker is included in a set apparatus, then sound output is achieved, but design and space disposition are limited
Solution Approach 1:
The patent makes the display panel multi-functional by using it both for visual display and as a sound radiation surface. This eliminates the need for separate speaker components and housings, providing greater design flexibility and reducing space disposition constraints in set apparatus.
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 viewer, improving sound quality and reducing interference, while also allowing for more compact and aesthetically pleasing designs in display devices such as TVs and monitors.
Implementation Method 1
a coil wound around the bobbin
Implementation Method 2
a damper between the frame and the bobbin
Data Source
AI summary
A sound generating device includes a magnet and a center pole on a yoke, a bobbin around the center pole, a coil wound around the bobbin, a frame outside the yoke, a damper between the frame and the bobbin, and a spacer in the bobbin.