Yagi-Uda Antenna Layout in Display Panels for High Radiation Gain
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display devices face challenges in integrating efficient antenna modules for wireless communications without compromising their size or performance, particularly in miniaturization and radiation gain for various frequency bands.
Innovation Solution
The integration of a Yagi-Uda antenna module within a display device, utilizing a transparent dielectric substrate with a driven element electrode, reflector electrodes, and director electrodes, which are strategically positioned to enhance radiation gain and miniaturization, allowing for efficient wireless communication while being compact and non-intrusive within the device's structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional antenna is integrated into the display device, then wireless communication function is achieved, but the device size increases and radiation gain is insufficient
Solution Approach 1:
The antenna module is nested within the display device structure by utilizing the non-display area and protruding area of the substrate. The driven element electrode, reflector electrode, and director electrodes are arranged in a compact Yagi-Uda configuration that fits within the constrained space, achieving high radiation gain without increasing overall device volume.
Solution Approach 2:
The antenna structure extends into the third dimension by utilizing the protruding area that extends from the substrate surface. The driven element electrode is positioned in the protruding area while reflector and director electrodes are arranged in the non-display area, creating a three-dimensional antenna configuration that achieves high radiation gain without increasing the planar footprint.
2Reliability
If antenna elements are arranged to achieve high radiation gain, then transmission efficiency improves, but the available space for antenna placement is limited
Solution Approach 1:
Different regions of the substrate are assigned different functions: the protruding area contains the driven element electrode for signal transmission, the non-display area contains reflector and director electrodes for signal direction control, and the display area is reserved for display functions. This local specialization allows the antenna to achieve high radiation gain within the limited non-display area by optimizing electrode arrangement in each specific zone.
3Volume of moving object
If the antenna module is miniaturized to fit the display device, then device compactness improves, but manufacturing complexity increases
Solution Approach 1:
The antenna module is merged with the display device substrate, eliminating the need for separate antenna housing and mounting structures. The driven element electrode, reflector electrode, and director electrodes are all formed on the same substrate using the same manufacturing processes, integrating multiple antenna components into a single manufacturing step and reducing overall manufacturing complexity despite the miniaturized configuration.
4Reliability
If director electrodes are positioned to optimize radiation pattern, then communication performance improves, but precise positioning requirements increase manufacturing difficulty
Solution Approach 1:
The antenna system is segmented into distinct functional components: driven element electrode for signal generation, reflector electrode for signal reflection, and multiple director electrodes for beam direction control. Each segment is positioned according to its specific function, with director electrodes arranged in a linear array in the non-display area. This segmentation allows for standardized positioning patterns that simplify manufacturing while maintaining optimal radiation characteristics.
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
This solution enables improved transmission and reception efficiency for wireless communications, achieving high radiation gain and miniaturization, thus addressing the need for compact and effective antenna integration in display devices across different frequency bands.
Implementation Method 1
an antenna that transmits and receives electromagnetic (EM) waves for wireless communications
Data Source
Figure 1
Figure 2
Figure 3
AI summary
According to an embodiment, a display device (10) may include a display panel (300) including a display area (DA) for displaying images and a non-display area (NDA) arranged at edges of the display area (DA), an antenna layer (ANTL) disposed on the display panel (300) and including a first area (A1) corresponding to the display area (DA), a second area (A2) corresponding to the non-display area (NDA), and a protruding area (AA) protruding from the second area (A2) in a first direction. The first direction is a direction away from the display panel (300), and an antenna driver circuit (350) electrically connected to the antenna layer (ANTL) through an antenna pad (APD) disposed in the protruding area (AA). The antenna layer (ANTL) includes a feeder electrode (710) disposed on at least a portion of the second area (A2), a reflector electrode (720) disposed between the feeder electrode (710) and the protruding area (AA) in the second area (A2), and a plurality of director electrodes (730) arranged in at least a portion of the first area (A1) such that they are spaced apart from one another.