Display Panel Acoustic Emission Through Gas-Layer Vibration Coupling
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Solution Overview
Problem
Existing display apparatuses suffer from poor user experience due to synchronization issues between sound and image, caused by the placement of speakers below or behind the display panel, leading to misalignment of sound and image positions.
Innovation Solution
A display apparatus that incorporates a gas layer between the display panel and the backlight board, where an exciter drives the backlight board to vibrate, transmitting these vibrations through the gas layer to the display panel, enabling the panel to emit sound while maintaining image clarity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the speaker is arranged below or behind the display panel to achieve aesthetic appearance, then the speaker is invisible from the front, but the sound and image positions are out of synchronization
Solution Approach 1:
The patent merges the speaker function with the display panel by integrating the light source and exciter directly behind the display panel. The display panel serves dual purposes: visual display and sound emission through vibration, eliminating the need for separate speakers and achieving both aesthetic appearance and sound-image synchronization.
Solution Approach 2:
The display panel is designed to perform multiple functions simultaneously: displaying images and emitting sound. The light source and exciter components enable the display panel to function as both a visual display device and an acoustic emission device, resolving the contradiction between aesthetic appearance and sound-image synchronization.
2Reliability
If the display panel is driven to vibrate for sound emission, then sound-image synchronization is achieved, but image clarity may be compromised
Solution Approach 1:
The patent introduces a gas layer as an intermediary between the light source and the display panel. This gas layer acts as a cushion that transmits vibrations from the exciter to the display panel while preventing direct contact that could cause damage or image distortion, thus maintaining both sound-image synchronization and image clarity.
Solution Approach 2:
The patent utilizes a gas layer (pneumatic element) to transmit mechanical vibrations from the exciter to the display panel. The gas layer provides a flexible coupling mechanism that allows vibration transmission without rigid contact, preventing image quality degradation while enabling sound emission.
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 solution achieves synchronization of sound and image, enhancing the overall user experience by allowing the display panel to emit sound without compromising its visual performance.
Implementation Method 1
the actuation member is configured to drive the backlight board body to vibrate and transmit vibration of the backlight board body to the display panel through the gas layer, to drive the display panel to vibrate and emit sound
Data Source
AI summary
The present application provides a display apparatus. The display apparatus includes: a display panel; a backlight module, which includes a backlight board and an optical film component, where the backlight board includes a backlight board body and a light source, an edge of the display panel is connected to an edge of the backlight board body, so as to form a gas layer between the display panel and the backlight board body, and the light source is positioned in the gas layer; a backplane, which is arranged on the side of the backlight module away from the display panel, and is used for supporting the backlight module and the display panel; an exciter, which includes an exciter body and an actuation member.