Display Panel Vibration Layer for Slim Forward Sound Output
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Solution Overview
Problem
Display apparatuses face challenges in achieving lightness and thinness while ensuring sound output is directed towards the viewer, as embedded speakers often direct sound rearward or laterally, hindering immersion and increasing thickness due to the inclusion of sound apparatuses.
Innovation Solution
A display apparatus with a vibration layer at the rear surface of a plate member and an electrode layer, which vibrates to output sound forward, allowing for slimmed design and improved sound directionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a speaker is embedded in the display apparatus to output sound, then sound output function is improved, but the thickness of the apparatus increases
Solution Approach 1:
The patent merges the speaker function with the display panel structure by integrating the vibration layer directly into the plate member of the display panel. This combination eliminates the need for a separate speaker component, thereby reducing overall thickness while maintaining sound output capability. The vibration layer is formed as part of the display panel's plate member, creating a unified structure that serves both display and audio functions.
Solution Approach 2:
The display panel's plate member is designed to serve multiple functions: it acts as both the display structure and the sound-generating component. The vibration layer integrated into the plate member enables the display panel itself to function as a speaker, allowing the same component to provide both visual display and audio output without requiring additional dedicated parts.
2Power
If a traditional speaker is embedded in the display apparatus, then sound output is achieved, but sound is directed toward rear or lateral surfaces instead of front
Solution Approach 1:
Instead of embedding a traditional speaker that pushes air from the rear or sides, the patent inverts the approach by using the front surface of the display panel itself as the sound-radiating surface. The vibration layer is positioned at the front plate member, causing the panel to vibrate and radiate sound forward toward the viewer, reversing the conventional sound output direction.
Solution Approach 2:
The display panel serves its own sound output function by using its own structure (the plate member) to generate and radiate sound. The vibration layer integrated into the plate member enables the panel to vibrate and produce sound directly from its front surface, eliminating the need for separate speaker components and achieving forward-directed sound output through self-service.
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 enables sound to be output in a forward direction, enhancing viewer immersion and reducing the thickness of the display apparatus by utilizing the display panel's vibration to direct sound forward, while maintaining a slim profile.
Implementation Method 1
a vibration layer at a rear surface of the plate member, and an electrode layer at the vibration layer
Data Source
AI summary
A display apparatus includes a display panel having a base member, a plate member, and a display part disposed between the base member and the plate member, a vibration layer disposed at a rear surface of the plate member, and an electrode layer disposed at the vibration layer. Further, a signal cable can be provided, which is electrically coupled to the plate member and the electrode layer.