Antenna Device Lateral Flexible Circuit Board Grounding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In thin and lightweight display devices with integrated antennas, the limited space leads to interference and noise disturbances from adjacent conductive structures, and existing interconnecting structures increase antenna thickness, affecting signaling efficiency.
Innovation Solution
An antenna device with a dielectric layer and flexible circuit boards connecting first and second electrode layers along the lateral portion, allowing for improved grounding and efficient feeding without increasing thickness, using a mesh structure and conductive intermediate layers for noise suppression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an additional interconnecting structure is employed to connect electrodes and pads in the antenna, then the antenna can be connected to external circuits, but the thickness of the antenna increases and mutual interferences and noises with other structures occur
Solution Approach 1:
The flexible circuit board connects the antenna to external circuits by extending laterally along the edge of the substrate rather than vertically through it. This dimensional change from vertical to lateral connection eliminates the need for thick penetrating structures, maintaining thin antenna profile while achieving external connectivity
Solution Approach 2:
The flexible circuit board acts as an intermediary component that connects the antenna electrodes to external circuits without requiring direct penetration through the substrate. This mediator approach allows connection while preserving the thin structure and reducing electromagnetic interference with internal display structures
2Weight of stationary object
If the antenna is placed in limited space within thin display devices, then the device becomes thinner and light-weighted, but the antenna is interfered or disturbed by external noises from adjacent conductive structures
Solution Approach 1:
The flexible circuit board extracts the connection function from the internal substrate structure and relocates it to the lateral edge of the device. This separation removes the interconnecting structure from the noisy internal environment, reducing electromagnetic interference while maintaining connectivity
Solution Approach 2:
By moving the connection path from the vertical dimension (through-substrate) to the lateral dimension (edge-parallel), the antenna structure is positioned away from noisy conductive structures, reducing interference while maintaining thin device profile
Data Source
AI summary
An antenna device according to an embodiment of the present invention includes a dielectric layer, a first electrode layer disposed on a top surface of the dielectric layer, the first electrode layer including a radiation pattern, a second electrode layer disposed on a bottom surface of the dielectric layer, and a flexible circuit board connecting the first electrode layer and the second electrode layer with each other along a lateral portion of the dielectric layer. Efficiency of grounding and noise removing may be improved by the flexible circuit board.