Display Panel Vibration Structure for Forward-Directed Sound
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Solution Overview
Problem
Display apparatuses face challenges in maintaining sound quality due to sound waves reflecting off walls and floors, leading to reduced immersion experiences for viewers.
Innovation Solution
A display apparatus with a vibration member and supporting structure that generates sound in a forward direction by using a vibration apparatus, enhancing sound quality and pressure levels, particularly in low-pitched sounds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If sound is output from a sound apparatus in a display device, then sound can be heard, but sound quality is degraded due to interference between sound waves reflected from walls and the floor
Solution Approach 1:
The patent extracts the sound output function from the traditional sound apparatus and relocates it to the display panel itself. The display panel vibrates to generate sound waves that travel directly forward, eliminating the need for separate sound apparatuses that cause reflected sound interference. This separation of sound generation from traditional acoustic components resolves the interference problem caused by wall and floor reflections.
Solution Approach 2:
The display panel is given a dual function: it serves both as the image display component and as the sound generation component. By making the display panel capable of both visual and auditory output, the patent eliminates the need for separate sound apparatuses positioned behind the display, thereby preventing sound wave reflection interference while maintaining sound output functionality.
2Ease of operation
If a traditional sound apparatus is used behind the display panel, then sound can be output, but the sound travels in rearward or downward directions causing degradation
Solution Approach 1:
Instead of placing the sound source behind the display panel as in traditional designs, the patent inverts the approach by making the front surface of the display panel itself the sound source. This inversion changes the sound propagation direction from rearward/downward to forward, improving sound quality by eliminating reflected sound interference while maintaining ease of operation.
3Reliability
If the display panel is used as a vibration plate to generate sound, then sound quality is enhanced, but the structure becomes more complex
Solution Approach 1:
The patent merges the display panel and sound generation functions into a single integrated structure. The display panel itself serves as the vibration plate, eliminating the need for separate sound apparatuses, mounting structures, and acoustic components. This merging simplifies the overall device structure while enhancing sound quality, as the display panel directly generates sound waves that travel forward without reflection interference.
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 viewer immersion by directing sound forward, enhancing sound characteristics and pressure levels, including stereo and multi-channel sounds.
Implementation Method 1
a vibration member, a supporting member at a rear surface of the vibration member and including a curved portion, and a vibration apparatus at the curved portion to face the rear surface of the vibration member
Data Source
AI summary
An apparatus may include a vibration member, a supporting portion at a rear surface of the vibration member, the supporting portion including a curved portion, and a vibration apparatus at the curved portion to face the rear surface of the vibration member. A display apparatus may include a display member, a supporting portion including a curved portion, a vibration apparatus at the curved portion to face a rear surface of the display member, and a cover member. A vehicle may include an interior material and a vibration generating apparatus.