Layered Antenna Structures in Wireless Display Devices
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The increasing functionality and stringent specifications of wireless electronic devices, combined with the trend of making them thinner and smaller, lead to a scarcity of space for electronic modules, making it challenging to accommodate antennas effectively within these devices.
Innovation Solution
The integration of a dipole antenna within the display area of a wireless electronic device using a portion of the input sensor panel, where the antenna is layered with the input sensor and features a mesh structure with thin conductors to maintain transparency and efficiency, allowing for improved antenna performance and reduced device volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If antennas are embedded within the display area using the input sensor panel, then antenna efficiency is improved, but the manufacturing complexity increases due to multi-layer integration
Solution Approach 1:
The antenna structure is merged with the input sensor panel by integrating antenna elements into the same layers as sensor bridge elements and sensing patterns. This combination allows the antenna to utilize the existing transparent conductor oxide layers and ITO patterns of the input sensor, achieving efficient radiation while avoiding separate antenna manufacturing processes
Solution Approach 2:
The input sensor panel layers serve dual purposes: functioning as both touch sensing elements and antenna radiation elements. The bridge elements and sensing patterns of the input sensor are configured to also act as antenna elements, enabling the same structure to perform both touch input detection and wireless communication functions
2Volume of moving object
If the antenna is integrated on the same layer as the input sensor, then device volume is reduced, but signal interference between antenna and sensor elements may occur
Solution Approach 1:
The antenna is divided into two sub-antennas positioned on different sides of the display area, with each sub-antenna having specific geometric configurations. This segmentation allows optimization of radiation patterns while maintaining distance from sensitive sensor regions, reducing potential interference
Solution Approach 2:
Different regions of the antenna structure are designed with different properties: the bridge elements utilize transparent conductor oxide for optimal sensing compatibility, while the antenna elements use ITO patterns configured for optimal radiation. The geometric shapes and orientations are locally optimized for their specific functions while coexisting in the same layer
Data Source
AI summary
An electronic device includes a display panel including a display area and a non-display area. The electronic device includes an input sensor disposed on the display panel and including a plurality of bridge elements and a plurality of sensing patterns connected to the plurality of bridge elements, and an antenna disposed on the same layer as the input sensor. The antenna includes a first sub-antenna disposed on a same layer as the bridge element and including a first portion extending in a first direction and a second portion extending from one end of the first portion in a second direction crossing the first direction and a second sub-antenna disposed on a same layer as the sensing pattern and including a third portion and a fourth portion extending from one end of the third portion in a direction opposite to the second direction.