Antenna Stack Layout for Gain in Thin Display Integration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing antenna designs for display devices face challenges in achieving sufficient radiation and gain properties while being integrated into limited spaces, without interfering with optical and sensor structures, and without increasing the overall thickness and volume of the device.
Innovation Solution
The proposed antenna stack structure includes an antenna substrate layer with an antenna unit comprising a radiator and an antenna pad, and a pad ground and insulating layer on the opposite surface, where the antenna pad is superimposed over the pad ground in the thickness direction, optimizing resonance frequency and impedance for improved gain and radiation properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the antenna is integrated into the display device in a limited space, then the device thickness and volume are maintained, but the radiation and gain properties of the antenna are insufficient
Solution Approach 1:
The patent transitions from a planar antenna configuration to a three-dimensional stacked configuration. The antenna pad and pad ground are positioned at different heights (separated by the insulating layer thickness), creating a vertical dimension that enhances radiation properties without increasing the device's planar footprint or overall volume.
Solution Approach 2:
The antenna structure is nested within the existing display device layers. The antenna pad is formed on the front surface while the pad ground is formed on the rear surface, with the insulating layer serving as the separation medium. This nesting approach integrates the antenna function into the existing device architecture without adding external volume.
2Adaptability or versatility
If additional film or structure is formed for inserting the antenna, then the antenna can be integrated, but the overall thickness and volume of the display device increase
Solution Approach 1:
The insulating layer serves dual functions: it provides electrical insulation between the antenna pad and pad ground, and it acts as the separation medium that defines the vertical spacing for enhanced radiation. By utilizing an existing necessary component (the insulating layer) for multiple purposes, additional films or structures are avoided, preventing thickness increase.
3Device complexity
If the antenna pad and pad ground are positioned at the same level, then the structure is simple, but the resonance frequency matching and impedance optimization are insufficient
Solution Approach 1:
The patent introduces a vertical dimension by positioning the antenna pad and pad ground at different heights separated by the insulating layer. This three-dimensional arrangement enables better resonance frequency matching and impedance optimization compared to coplanar configurations, while the insulating layer thickness provides a controllable parameter for tuning the antenna performance.
Data Source
AI summary
An antenna stack structure according to an embodiment includes an antenna substrate layer, an antenna unit disposed on one surface of the antenna substrate layer and including a radiator and an antenna pad, and a pad ground and an insulating layer disposed at the same level on an opposite surface of the antenna substrate layer facing the one surface. The antenna pad is superimposed over the pad ground in a thickness direction. Radiation properties can be improved utilizing the antenna pad.