RF Noise Shielding in Flexible Display Bending Areas
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Solution Overview
Problem
Display devices experience malfunction due to RF noise interference from antennas, affecting driving integrated circuits and signal lines, particularly in areas where antennas are close to these components.
Innovation Solution
A display device is designed with a first shielding layer in the bending area, made of materials like titanium and aluminum, which covers connection electrodes and extends to the pad area to cover the driving integrated circuit, reflecting or absorbing RF noise generated by the antenna.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the antenna is disposed close to the display panel to reduce dead space, then the area utilization is improved, but RF noise interference to the driving integrated circuit and connection electrodes increases
Solution Approach 1:
A shielding layer is introduced as an intermediary component between the antenna and the driving integrated circuit/connection electrodes. This shielding layer reflects or absorbs RF noise signals, preventing them from reaching the sensitive electronic components while allowing the antenna to maintain its close proximity to the display panel for space efficiency.
Solution Approach 2:
The shielding layer is divided into multiple segments including a first shielding layer in the bending area and a second shielding layer in the pad area. This segmentation allows the shielding function to be distributed across different regions, effectively covering both the connection electrodes in the bending area and the driving integrated circuit in the pad area while maintaining compact overall structure.
2Reliability
If the shielding layer covers both the connection electrodes and driving integrated circuit, then the RF noise protection is improved, but the device complexity increases
Solution Approach 1:
The first shielding layer and second shielding layer are electrically connected and functionally integrated to form a unified shielding system. This merging approach allows the shielding function to cover both the bending area and pad area components through a coordinated multi-layer structure, achieving comprehensive RF noise protection while maintaining reasonable structural complexity through systematic 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
The shielding layer effectively prevents RF noise from interfering with the driving of the display device, reducing the risk of malfunction and improving the reliability of the display panel.
Implementation Method 1
the first shielding layer may be configured to prevent a noise signal generated by the antenna from being transmitted to the connection electrode
Implementation Method 2
reflecting or absorbing RF noise generated by the antenna
Data Source
AI summary
A display device includes a display panel and a first shielding layer. The display panel includes a substrate, a display structure, and a sensing structure. The substrate includes a display area, a bending area, and a pad area. The display structure is disposed in the display area on the substrate. The sensing structure is disposed on the display structure, and includes sensing electrodes. The first shielding layer is disposed in the bending area on the substrate, and includes a same material as the sensing electrode.