Display Module Speaker via Magnetic Vibration
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Solution Overview
Problem
The limited architecture space in mobile terminals hinders the integration of multiple functional devices, leading to reduced functionality and inefficient sound generation with increased power consumption.
Innovation Solution
A mobile terminal design that incorporates a display module connected to a middle frame with magnets, using foam adhesive for vibration-driven sound generation without the need for a separate speaker, allowing the display to function as a diaphragm for sound production while maintaining a flat and rounded surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a separate speaker is integrated into the mobile terminal, then sound generation function is improved, but device complexity and architecture space are increased
Solution Approach 1:
The patent merges the speaker function with the display module by making the display module itself act as a diaphragm. The display module is connected to a magnet assembly that can drive it to vibrate, eliminating the need for a separate speaker component while maintaining sound generation capability.
Solution Approach 2:
The display module serves dual functions: visual display and sound generation. By enabling the display module to function as both a screen and a diaphragm, the patent reduces the number of separate components needed in the mobile terminal.
2Adaptability or versatility
If a separate speaker is integrated into the mobile terminal, then sound generation function is improved, but the architecture space is increased
Solution Approach 1:
The patent combines the speaker function within the existing display module structure. The magnet assembly is positioned behind the display module, and the display module itself serves as the vibrating element, eliminating the need for additional space that would be required for a separate speaker.
Solution Approach 2:
The magnet assembly is nested within the housing structure behind the display module. The entire sound generation system is integrated into the existing device architecture, with the display module serving as the diaphragm and the magnets positioned in the available space behind it.
3Ease of manufacture
If foam adhesive is used to connect display module to middle frame, then ease of manufacture is improved, but vibration effect is worsened
Solution Approach 1:
The patent applies foam adhesive only at specific locations rather than covering the entire connection area. By positioning the magnets and adhesive strategically, the design maintains ease of manufacture while preserving sufficient vibration transmission capability for sound generation.
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 solution enables improved sound generation with reduced power consumption and increased efficiency, eliminating the need for a dedicated speaker and maintaining a compact, integrated design.
Implementation Method 1
under an effect of a magnetic field generated by the first magnet and a magnetic field generated by the second magnet, in a direction perpendicular to a light-emitting surface of the display module, the first magnet may drive the display module to move up and down
Implementation Method 2
when the first magnet receives the first drive signal used as a high-frequency signal, and when the first magnet may vibrate
Implementation Method 3
the foam adhesive used to fasten the display module to the middle frame is elastic to some extent, and can be deformed under an action of an external force
Implementation Method 4
the foam adhesive used to fasten the display module to the middle frame is elastic to some extent, and can be deformed under an action of an external force
Data Source
Figure 1~3
Figure 4a~5a
Figure 5b~7
AI summary
Embodiments of this application provide a mobile terminal, and relate to the field of display technologies, to resolve a problem that an architecture space inside the mobile terminal is relatively small. The mobile terminal includes a housing, and a middle frame and a display module that are disposed in the housing. The display module is connected to the middle frame. An accommodation space is formed between the display module and the middle frame. In addition, the mobile terminal further includes a first magnet and a second magnet, and at least a part of the first magnet and at least a part of the second magnet are disposed in the accommodation space. The first magnet is disposed on a back facet of the display module, the second magnet is disposed on the middle frame, and the first magnet and the second magnet are disposed face to face.