Flexible Display Panel Vibration for Sound Output
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Solution Overview
Problem
Conventional display devices require separate sound output units, which can lead to misalignment between sound and image directions, and are limited in their ability to output multiple channels of sound when multiple panels are used.
Innovation Solution
A display device with an exciter attached to the rear surface of a flexible display panel, such as LED or OLED, that vibrates to output sound, eliminating the need for a separate sound output unit and allowing for synchronized sound and image directions, as well as multi-channel sound output from multiple panels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate sound output unit is provided, then sound can be output, but the direction of sound does not match with the direction of image
Solution Approach 1:
The patent merges the sound output function with the display panel by attaching an exciter directly to the rear surface of the display panel. This integration causes the display panel itself to vibrate and produce sound, making the sound direction match the image direction and eliminating the need for separate sound output units positioned at sides or bottom of the device.
Solution Approach 2:
The display panel is given dual functionality: it serves both as the image display component and as the sound output component. By making the display panel capable of vibration through the exciter, a single component performs both visual and auditory functions, improving sound-direction alignment while reducing overall device complexity.
2Area of stationary object
If multiple display panels are provided, then large-sized display can be implemented, but sound output for multiple channels is not achieved
Solution Approach 1:
The patent applies segmentation by attaching individual exciters to each display panel in a multi-panel configuration. Each panel with its exciter becomes an independent sound output unit, enabling multi-channel sound output that corresponds to the spatial arrangement of the panels. This allows large-sized displays to provide both extended visual area and multi-channel audio capability.
3Reliability
If a separate sound output unit is provided, then sound can be output, but manufacturing cost increases
Solution Approach 1:
By merging the sound output function into the display panel structure, the patent eliminates the need for separate sound output units. This integration reduces the total number of components required, simplifies assembly processes, and lowers manufacturing costs while maintaining reliable sound output functionality through the exciter-driven vibration of the display panel.
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 the display panel to function as a sound output unit, aligning sound direction with image direction and allowing for multiple channels of sound, reducing manufacturing costs and simplifying installation and reconfiguration.
Implementation Method 1
an exciter on a rear surface of a display panel to vibrate the display panel
Data Source
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AI summary
The present disclosure relates to a display device comprising a display panel which outputs an image on a front surface thereof and is bendable, an exciter positioned on a rear surface of the display panel, for generating sound by vibrating the display panel, a vibration transmitting unit positioned between the exciter and the display panel, for transmitting vibrations of the exciter to the display panel, a control unit for controlling the display panel and the exciter, and a frame to which the display panel is fixed. As the display device uses the bendable display panel, such that the display panel itself can vibrate to output sound, the display device has an advantage in that there is no need to have a separate sound output device.