Display Panel Vibration Transfer for Slim Speaker Integration
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Solution Overview
Problem
Display apparatuses face challenges in delivering clear sound output due to sound interference with surrounding environments and increased thickness when incorporating speakers, which affects user immersion and sound quality.
Innovation Solution
A display apparatus with a miniaturized sound generator, including a piezoelectric sound generator and a vibration transfer member, is designed to enhance sound quality by transferring vibrations to the display panel, utilizing a supporting member with a groove and mesh structure for vibration adjustment, allowing for both low-pitched and high-pitched sound reproduction without increasing thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If a speaker is added to a display apparatus, then sound output capability is improved, but thickness increases
Solution Approach 1:
The patent combines the sound generation function with the display panel structure by integrating a vibration transfer member that couples the sound generator directly to the display panel, eliminating the need for separate speaker housings and reducing overall thickness while maintaining sound output capability
Solution Approach 2:
The patent transitions from traditional forward-firing speaker architecture to a vibration-based system where the display panel itself acts as the sound radiation surface, utilizing the panel's large surface area to propagate sound waves in multiple directions simultaneously, thereby improving sound quality without increasing thickness
2Device complexity
If sound advances toward lower or rear portion of display panel, then sound device structure is simplified, but sound quality deteriorates due to interference
Solution Approach 1:
The patent employs mechanical vibration by coupling the sound generator to the display panel through a vibration transfer member, causing the entire panel surface to vibrate and radiate sound. This approach eliminates sound interference issues by distributing sound radiation across the panel surface rather than confining it to a specific direction, thereby improving sound quality while maintaining structural simplicity
Solution Approach 2:
The display panel serves dual functions: visual display and sound radiation. By making the panel itself the sound output medium through vibration coupling, the system eliminates the need for dedicated sound projection structures, simplifying the overall device structure while achieving superior sound quality through the panel's large radiating surface
3Object-generated harmful factors
If vibration transfer member is used to transfer sound vibrations, then sound quality is improved, but device complexity increases
Solution Approach 1:
The vibration transfer member acts as an intermediary element that couples the sound generator to the display panel. This simple mechanical connector efficiently transfers vibrations from the small sound generator to the large panel surface, amplifying sound output and improving quality without requiring complex acoustic structures or additional components
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 improves sound quality by reproducing a wide range of frequencies, from low-pitched to high-pitched sounds, while maintaining a slim form factor, reducing sound distortion, and enhancing user immersion by efficiently transferring vibrations without the need for external speakers.
Implementation Method 1
A display apparatus with a miniaturized sound generator, including a piezoelectric sound generator
Implementation Method 2
a vibration transfer member between the display panel and the sound generator, and configured to transfer the vibration of the sound generator to the display panel to generate sound
Data Source
AI summary
A display apparatus including a display panel configured to display an image is disclosed. The display apparatus includes a supporting member on a rear surface of the display panel. The supporting member includes a groove. The display apparatus also includes a sound generator between the display panel and the supporting member, and configured to provide a vibration. The display apparatus further includes a vibration transfer member between the display panel and the sound generator, and configured to transfer the vibration of the sound generator to the display panel to generate sound.