Display Module Layout With Wave-Absorbing Layer for Antenna Interference
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Solution Overview
Problem
Full-screen display devices face interference signal issues that can affect the middle frame antenna's signal, requiring a solution to minimize interference while maintaining a high screen-to-body ratio and compact structure.
Innovation Solution
Incorporating a wave-absorbing layer between the display panel parts and a shielding film to absorb and shield interference signals, respectively, with a minimum distance of at least 8 millimeters between the wave-absorbing layer and the middle frame antenna to prevent signal interference, and using a multiplexer to reduce the wiring area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a multiplexer is used to reduce wiring area, then the screen-to-body ratio is improved, but interference signals affect the middle frame antenna's signal quality
Solution Approach 1:
A wave-absorbing layer is introduced as an intermediary component between the display panel and the middle frame antenna. This layer absorbs electromagnetic waves and interference signals, preventing them from reaching the antenna and causing signal degradation, thus resolving the contradiction between compact wiring and signal quality
Solution Approach 2:
The patent converts the harmful interference signals into beneficial absorption by using materials with specific electromagnetic properties. The wave-absorbing layer transforms the harmful electromagnetic waves into heat energy through dielectric loss and magnetic loss, turning the harmful factor into a solution that protects the antenna signal
2Area of stationary object
If the display device adopts a compact structure with high screen-to-body ratio, then the device size is reduced, but interference signals cannot be effectively shielded
Solution Approach 1:
Instead of implementing comprehensive shielding across the entire device, the patent applies local quality by placing wave-absorbing materials specifically at critical locations where interference signals originate and where the middle frame antenna is positioned. This targeted approach maintains compact device size while effectively protecting signal quality at the most vulnerable points
Solution Approach 2:
The patent employs composite materials with both dielectric and magnetic properties to create a multi-functional wave-absorbing layer. This composite structure combines the advantages of different materials to achieve broad-spectrum electromagnetic wave absorption, providing reliable signal protection within the compact device form factor
3Object-affected harmful factors
If the wave-absorbing layer is placed close to the middle frame antenna, then the shielding effect is enhanced, but the device structure becomes more complex
Solution Approach 1:
The wave-absorbing layer is merged with existing device components such as the display panel backplane or antenna mounting structure, rather than being added as a separate independent component. This integration approach enhances the shielding effect while avoiding additional structural complexity, as the wave-absorbing function is combined with structural elements already present in the compact device design
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
Effectively reduces the influence of interference signals on the display device's signal, ensuring clear signals for the middle frame antenna and achieving a higher screen-to-body ratio and compact design.
Implementation Method 1
a wave-absorbing layer disposed on the back surface of the first panel part, wherein the wave-absorbing layer is configured to absorb the interference signal
Implementation Method 2
a shielding film disposed on a side, away from the first panel part, of the driving circuit, wherein an orthographic projection of the shielding film on the first panel part covers an orthographic projection of the driving circuit on the first panel part
Data Source
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AI summary
Embodiments of the present disclosure provide a display device and a display module and belong to the field of display technologies. The display device includes a display module and a middle frame antenna. The display module includes a display panel, a wave-absorbing layer, a driving circuit and a flexible circuit board. An orthographic projection of the driving circuit on a first panel part, an orthographic projection of the flexible circuit board on the first panel part, and an orthographic projection of the wave-absorbing layer on the first panel part do not overlap. The present disclosure can alleviate the influence of an interference signal on a display signal of the display device.