Panel Vibration Display Layout for Stereo Sound Separation
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Solution Overview
Problem
Conventional display devices suffer from degraded sound quality and inefficient sound orientation due to speakers being positioned at the rear or lower parts of the display panel, leading to interference and diffraction, which affects sound localization and occupies undesired space.
Innovation Solution
A panel vibration type display device is implemented with left and right sound generating actuators positioned at predetermined areas of the display panel, utilizing sound separation partitions and air gap spaces to generate stereo sound directly from the panel, reducing sound interference and enhancing sound quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If speakers are positioned at the rear or lower parts of the display panel, then sound output is achieved, but sound quality is degraded due to interference and diffraction
Solution Approach 1:
The display panel is divided into multiple vibration regions with independent actuators (left and right sound generating actuators positioned at predetermined areas). Each actuator vibrates a specific region of the display panel to generate sound waves that propagate in desired directions, thereby reducing sound interference and diffraction effects that occur with single rear-mounted speakers
Solution Approach 2:
The sound generation approach transitions from rear-mounted speakers (backward propagation) to front-facing panel vibration (forward propagation toward viewer). By utilizing the front surface of the display panel as the sound source, the system eliminates the need for rear sound propagation and reduces interference with reflected sounds from walls and floors
2Object-generated harmful factors
If speakers are positioned at the rear or lower parts of the display panel, then sound output is achieved, but sound localization is affected
Solution Approach 1:
Different regions of the display panel are assigned different functions: left and right areas contain sound generating actuators for stereo sound localization, while the central area maintains display functionality. This localized differentiation allows precise control over sound propagation directions and improves sound localization accuracy
3Adaptability or versatility
If separate speakers are assembled with the display device, then sound functionality is achieved, but space is occupied in undesired locations
Solution Approach 1:
The sound generation function is merged with the display panel itself by using the panel as a vibration membrane. Sound generating actuators are integrated into the display panel structure at predetermined areas, eliminating the need for separate speaker assemblies and freeing up space that would otherwise be occupied by traditional speaker components
Solution Approach 2:
The display panel serves dual functions: visual display and sound generation. The same panel structure that displays images also acts as a vibration membrane for sound output, allowing the device to perform multiple functions without requiring additional dedicated space for sound functionality
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 provides excellent stereo sound with reduced dip phenomena in the mid-high sound range, ensuring durability and reliability across the audible frequency band, while minimizing space occupation.
Implementation Method 1
sound generating actuators configured to vibrate the display panel to generate sound
Data Source
AI summary
Disclosed is a display device that includes a display panel, sound generating actuators including a first sound generating actuator in a first area of the display panel and a second sound generating actuator in a second area of the display panel, the first and second sound generating actuators configured to vibrate the display panel to generate sound, and a partition between the first sound generating actuator and the second sound generating actuator.