Mesh Millimeter Wave Antenna for High-Transmittance Displays
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Solution Overview
Problem
Existing antenna-on-display (AoD) technologies face challenges in ensuring the radiation performance of millimeter wave antennas integrated into display areas without affecting the display functionality of electronic devices.
Innovation Solution
A method for preparing a millimeter wave antenna involves forming a definition layer on a baseboard, treating it to create through holes, and forming an electrode layer with a mesh structure within these holes, ensuring both the radiation pattern and feeder have a mesh structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If an antenna is provided in the display area using conventional AoD technology, then the antenna coverage is increased, but the display performance is affected due to the antenna structure blocking light
Solution Approach 1:
The antenna structure is segmented into a mesh pattern with multiple small conductive elements distributed across the display area. This segmentation allows light to pass through the gaps between elements while maintaining adequate antenna coverage area for millimeter wave radiation.
Solution Approach 2:
Different regions of the antenna structure have different properties: the radiation pattern uses a mesh structure optimized for light transmittance in the display area, while the feeder structure uses conventional conductive traces for efficient signal transmission. This local differentiation resolves the conflict between display performance and antenna functionality.
2Illumination intensity
If the antenna structure is made transparent to maintain display quality, then the light transmittance is improved, but the radiation performance may be compromised
Solution Approach 1:
The antenna design optimizes specific parameters including the mesh pattern geometry, conductor trace width, spacing between elements, and overall antenna dimensions to achieve both high light transmittance and adequate radiation performance for millimeter wave frequencies.
Solution Approach 2:
The antenna structure combines transparent or translucent substrate materials with conductive materials in a composite design, creating a structure that simultaneously provides mechanical support, electrical conductivity for radiation, and optical transparency for display functionality.
3Illumination intensity
If a mesh structure is used for both radiation pattern and feeder, then the light transmittance is maximized, but the manufacturing complexity increases
Solution Approach 1:
The manufacturing process merges multiple steps into integrated operations: the mesh pattern is formed using screen printing or photolithography that simultaneously creates both the radiation pattern and feeder structures in a single process flow, reducing manufacturing complexity despite the intricate mesh geometry.
Data Source
AI summary
Provided are a millimeter wave antenna and a preparation method thereof, an electronic device and a driving method thereof, relating to the field of display technology. The preparation method of the millimeter wave antenna includes: providing a first baseboard; forming a definition layer on the first baseboard; treating the definition layer to enable the definition layer to have a plurality of through holes; forming an electrode layer in each of the through holes of the definition layer; the electrode layer includes a radiation pattern and a feeder, and both the radiation pattern and the feeder include a mesh structure.