Display Vibration Speaker Structure for Forward Sound Output
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Solution Overview
Problem
Speakers in display apparatuses occupy space, limiting design and causing sound interference that degrades sound quality and reduces viewer immersion due to sound reflection.
Innovation Solution
A vibration apparatus that outputs sound by vibrating a display member to direct sound forward, enhancing sound quality and separating high-pitched and middle-low-pitched sound bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate speaker is used to output sound, then sound quality can be improved, but the speaker occupies space and limits design freedom
Solution Approach 1:
The patent combines the speaker functionality with the display panel by making the display panel itself serve as the vibration member. The coil assembly is integrated behind the display panel, and the panel vibrates directly to produce sound, eliminating the need for a separate speaker unit and thus saving space while maintaining sound output capability
Solution Approach 2:
The display panel is given dual functionality: it serves both as the visual display surface and as the sound-generating vibration member. This multi-functional design allows the same component to perform both display and audio functions, reducing the overall device volume
2Ease of manufacture
If sound is output from the rear or downward direction, then speaker placement is simplified, but sound quality is degraded due to interference from wall and ground reflections
Solution Approach 1:
Instead of outputting sound from the conventional rear or downward direction, the patent inverts the sound output direction by making the front surface of the display panel the sound emission point. The vibration member is positioned to vibrate the front surface, directing sound forward and away from reflective surfaces like walls and floors, thereby improving sound quality
3Volume of moving object
If the display panel vibrates to output sound, then space is saved and sound direction is improved, but the vibration structure becomes more complex
Solution Approach 1:
The vibration system is segmented into distinct functional components: the coil assembly (with first and second coils), the magnet assembly (with first and second magnets), and the vibration member (display panel). This segmentation allows each component to be optimized independently and simplifies the overall structure by clearly defining the role of each part in the vibration generation process
Solution Approach 2:
The patent employs a nested structure where the coil assembly is positioned in front of the magnet assembly, and both are integrated behind the display panel. The coil and magnet assemblies are arranged in overlapping configurations that maximize space utilization while maintaining functional independence, reducing overall structural complexity
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
Enhances sound characteristics and sound pressure level, particularly for low-pitched sound bands, by reducing total harmonic distortion and directing sound forward.
Implementation Method 1
a coil including a first coil at a periphery of the first bobbin and a second coil at a periphery of the second bobbin
Implementation Method 2
a vibration apparatus and an apparatus including the same, which can vibrate a display member to output a sound in a forward direction
Data Source
AI summary
A vibration apparatus includes a frame having an accommodating space, a magnet accommodated into the accommodating space and including a first magnet and a second magnet at a periphery of the first magnet, a bobbin accommodated into the accommodating space and including a first bobbin at a periphery of the first magnet and a second bobbin at a periphery of the first bobbin, a coil including a first coil at a periphery of the first bobbin and a second coil at a periphery of the second bobbin, and a protection member including a first protection member connected to the first bobbin and a second protection member connected to the second bobbin. The second protection member is disposed apart from the first protection member.