Sound-Emitting Display Substrate for Directional Channel Separation
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Solution Overview
Problem
Existing display devices with integrated sound-emitting substrates using electromagnetic actuators fail to distinguish sound channels clearly, leading to poor user experience due to uniform amplitude distribution of sound waves, which affects the audio-visual performance.
Innovation Solution
The display apparatus incorporates a sound-emitting substrate with a specific anisotropic structure, including a middle layer with varying stretch ratios and fiber orientations, allowing for differential amplitude attenuation patterns in different directions, and a stabilizer to maintain actuator stability, enhancing channel discrimination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of stationary object
If electromagnetic actuators are used to generate sound waves in display devices, then the device can achieve thin thickness and light weight, but the sound channels cannot be clearly distinguished due to uniform amplitude distribution
Solution Approach 1:
The patent applies local quality by creating anisotropic structures within the sound-emitting substrate, where different regions have different fiber orientations and stretch ratios. This causes sound waves to experience different amplitude attenuation in different directions, enabling clear differentiation of sound channels while maintaining the overall thin and light device structure.
Solution Approach 2:
The patent employs asymmetry by designing the sound-emitting substrate with non-uniform structural properties. The middle layer contains fibers with specific orientation angles and stretch ratios that create asymmetric amplitude attenuation patterns, allowing left and right sound channels to be clearly distinguished despite the symmetric overall device layout.
2Device complexity
If electromagnetic actuators are integrated into the display structure, then the device maintains a compact form factor, but the actuators lack stability affecting sound quality
Solution Approach 1:
The patent applies preliminary action by pre-establishing a stable structural framework for the electromagnetic actuators before operation. The actuators are firmly mounted on the display structure with proper positioning and support, ensuring structural stability is in place before the actuators begin generating sound waves, thereby preventing instability during operation.
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 configuration enables clear differentiation of sound channels by adjusting wave amplitudes based on direction, improving user experience and audio-visual performance.
Implementation Method 1
at least one electromagnetic actuator...configured to generate sound waves
Implementation Method 2
the at least one electromagnetic actuator...generate sound waves by vibrating at a frequency
Data Source
Figure 1~2
Figure 3~4
Figure 5A~6
AI summary
Embodiments of the present disclosure provide a display apparatus and an electromagnetic actuator, the display apparatus includes a display structure, a sound-emitting substrate, at least one electromagnetic actuator and a stabilizer; where one side of the sound-emitting substrate is attached to the display structure, and the electromagnetic actuator is fixedly attached to the other side of the sound-emitting substrate through the stabilizer; the electromagnetic actuator includes a bracket and a plurality of flexible support feet extending away from the bracket. The electromagnetic actuator is fixedly arranged on the sound-emitting substrate through the stabilizer, and the bracket receives the electromagnetic actuator, the plurality of flexible support feet can keep the electromagnetic actuator stable during the vibration process of the electromagnetic actuator, which helps avoid position shift of the electromagnetic actuator under long-time working.