Vibration-Driven Display Panels for In-Screen Sound Crosstalk Control
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Solution Overview
Problem
Display devices face challenges with sound quality due to space constraints and interference, leading to deteriorated sound transmission and reduced viewer immersion.
Innovation Solution
A display panel design incorporating multiple self-sounding display units with vibration devices and partition structures, arranged to optimize sound channel centers and reduce crosstalk, enabling in-screen sound and enhanced audio-video positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a separate speaker is installed in the display device, then sound output capability is improved, but device space is occupied and design flexibility is limited
Solution Approach 1:
The patent combines the sound output function with the display panel by integrating vibration devices directly into the display structure. The display panel itself serves as the sound transmission medium, eliminating the need for separate speaker components and freeing up device space while maintaining sound output capability.
Solution Approach 2:
The display panel is designed to perform multiple functions simultaneously: visual display and sound output. The vibration devices integrated into the display panel enable the same structure to serve both as a visual interface and an acoustic interface, achieving multi-functionality without increasing overall device volume.
2Ease of operation
If sound propagates to rear or lower parts of the display device, then sound transmission is simplified, but sound quality deteriorates due to interference from reflected sounds
Solution Approach 1:
The patent divides the display panel into multiple independent sound channels, each with its own vibration device and sound transmission path. This segmentation allows for precise control of sound propagation in each channel, enabling sound to be directed toward the rear or lower parts while maintaining quality through individualized path optimization and interference mitigation.
Solution Approach 2:
Different regions of the display panel are designed with different sound transmission characteristics tailored to their specific functions. Areas directing sound to the rear have optimized pathways to minimize reflection interference, while other regions may have different configurations, allowing each local area to achieve optimal sound quality for its intended propagation direction.
3Reliability
If multiple sound channels are integrated in the display panel, then immersion and audio-video positioning are enhanced, but device complexity increases
Solution Approach 1:
The patent merges multiple sound channels into the single display panel structure, with each channel's vibration device and transmission path integrated directly into the panel layers. This consolidation achieves enhanced immersion and audio-video positioning through multiple independent channels while avoiding the complexity of separate external speaker systems.
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 enhances sound quality and immersion by increasing the effective listening range and ensuring accurate audio-video synchronization without increasing costs.
Implementation Method 1
a vibration device connected with the first sub-display panel
Implementation Method 2
the sound output from the speaker propagates to a rear part or a lower part of the display device
Data Source
AI summary
A display panel includes at least two first display units, the first display unit includes at least one first sub-display unit, the first sub-display unit includes a first sub-display panel and a vibration device connected with the first sub-display panel, the at least two first display units are arranged along a first direction to form a display unit row, in one of the display unit rows, the distance L1 of sound channel centers of two adjacent first display units in the first direction is:2×W×tan (β2)wherein, W is the vertical distance between the sound receiving position and a side surface of the display panel facing the sound receiving position; β is an angle between linear distances from the sound channel centers of two adjacent first display units to the sound receiving position respectively in a display unit row, and the β is greater than 2.4 degrees.