Display-Integrated Multi-Band Antenna Layering for Low Interference
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Solution Overview
Problem
As electronic devices become thinner and more functional, the limited space in which electronic modules are mounted poses a challenge for efficiently integrating antennas that cover various frequency bands without interfering with other components like input sensors.
Innovation Solution
The electronic device employs first and second antennas with different frequency bands, positioned on upper and lower layers within the display region, with specific metal layer configurations and insulation layers to optimize space usage and reduce signal interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple antennas for different frequency bands are integrated in a thin electronic device, then antenna efficiency is improved, but signal interference between antennas increases
Solution Approach 1:
The patent applies layering in the vertical dimension to separate antennas of different frequency bands. First and second antennas are disposed on different layers within the display region, allowing spatial separation that reduces signal interference while maintaining compact form factor. This dimensional approach enables multiple antennas to coexist in a thin profile without significant horizontal separation.
Solution Approach 2:
Insulation layers are introduced as intermediary structures between the first and second antennas. These insulation layers act as mediators that electrically isolate the antennas, preventing direct signal interference while allowing both antennas to function efficiently within the same device structure.
2Area of stationary object
If antennas are disposed in the display region, then space utilization is improved, but image quality may deteriorate
Solution Approach 1:
The patent moves antenna elements from the horizontal plane to the vertical dimension by disposing them on different layers. This allows antennas to occupy the display region area without significantly impacting the optical path, as the antennas are separated in the thickness direction rather than competing for surface area.
Solution Approach 2:
The patent applies different patterns (including mesh patterns) to antenna elements in specific regions. By making the antenna structure partially transparent or using mesh designs, the local optical properties are adjusted to minimize impact on display quality while maintaining antenna functionality in those specific areas.
3Device complexity
If input sensor and antenna share the same layer, then manufacturing complexity is reduced, but signal interference between sensor and antenna increases
Solution Approach 1:
The patent separates the input sensor and antenna into different vertical layers within the display region. This layering approach maintains the benefit of integrated manufacturing while introducing vertical separation that reduces electromagnetic interference between the sensor and antenna components.
Data Source
AI summary
An electronic device includes a display panel including a display region and a non-display region adjacent thereto, an input sensor overlapping a first region of the display region, and an antenna overlapping a second region of the display region. The input sensor includes a first sensing layer including a bridge pattern and a second sensing layer including sensor electrodes and disposed on a different layer from the first sensing layer. The bridge pattern connects two adjacent sensor electrodes. The antenna includes a first antenna layer including a first antenna with a first frequency band, the first antenna layer and the first sensing layer disposed on the same layer, and a second antenna layer including a second antenna with a second frequency band different from the first frequency band. The second antenna layer and the second sensing layer are disposed on the same layer.