Piezo Vibration Unit Rear-Mounted Display Panel Sound Quality
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional display apparatuses face challenges in maintaining sound quality due to interference from reflected sounds, which deteriorates the viewing experience by not accurately directing sound to the viewer, leading to reduced immersion.
Innovation Solution
The display apparatus incorporates a sound generating device mounted on the rear side of the display panel within the rear cover, utilizing piezo vibration units to produce sound vibrations that are directed forward, enhancing sound quality and immersion without the need for external speakers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional sound devices are used in display apparatus, then sound can be output, but sound quality deteriorates due to interference from reflected sounds
Solution Approach 1:
The patent inverts the conventional sound output approach by placing the sound generating device on the rear side of the display panel instead of the front. This inversion allows sound to propagate forward through the display panel structure, avoiding reflection interference from walls and floor that plagues conventional front-mounted speakers.
Solution Approach 2:
The display panel itself serves as an intermediary medium for sound transmission. The vibration generating unit creates vibrations that are transmitted through the display panel structure to the front surface, where the panel acts as a speaker diaphragm, eliminating the need for separate external speakers and avoiding reflected sound interference.
2Ease of operation
If sound devices are mounted on the front of display panel, then sound can be directed to viewers, but external speakers become visible and device structure becomes complex
Solution Approach 1:
The patent merges the sound generating function with the display panel structure by mounting the vibration generating unit on the rear side. The display panel serves dual purposes as both the visual display medium and the sound output diaphragm, eliminating the need for separate external speaker components and reducing overall device complexity.
Solution Approach 2:
The display panel is given multi-functionality by using it both for visual display and as a sound output device. The same panel structure that displays images also serves as the speaker diaphragm that projects sound forward, consolidating multiple functions into a single component.
3Power
If conventional speakers are used, then sound can be generated, but device thickness increases due to external speaker components
Solution Approach 1:
The sound generating device is nested within the existing display panel structure by mounting it on the rear side. The vibration generating unit is integrated into the rear cover assembly, utilizing the existing structural space without requiring additional external speaker housings, thereby maintaining the device's thin profile.
Solution Approach 2:
The patent transitions from a conventional front-mounted speaker arrangement to a rear-mounted configuration, utilizing the thickness dimension of the display panel structure. By placing the vibration generating unit on the rear side and using the panel itself as the sound projection surface, the design eliminates the need for additional depth that external speakers would require.
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
This configuration effectively transmits sound directly to the viewer, improving sound quality and immersion by using piezo vibration units to generate sound vibrations within the display panel, maintaining an ultra-thin structure and eliminating external speaker visibility.
Implementation Method 1
utilizing piezo vibration units to produce sound vibrations
Implementation Method 2
a vibration generating unit disposed inside the rear cover and configured to provide sound vibration to the display panel
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The present disclosure relates to a display apparatus, especially having a display panel generating sounds. A display apparatus according to the present disclosure comprises: a display module; a back cover disposed at a rear surface of the display module; a depression recessed into the back cover from a first surface of the back cover with a first width and a first depth; a penetration through from a second surface of the back cover to the depression with a second width smaller than the first width and a second depth corresponding to a difference between a thickness of the back cover and the first depth; and a first piezo vibration unit disposed at a stepped portion between the penetration and the depression..