Under-Display Antenna Layout Using Partition Walls for Energy Radiation
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Solution Overview
Problem
Existing electronic devices with wireless communication capabilities face challenges in efficiently radiating energy from transmission lines while maintaining display visibility and sensor sensitivity.
Innovation Solution
The electronic device incorporates a conductive partition wall and a transmission line disposed under the display panel, with energy radiated from the transmission line resonating in a defined space and being radiated through the non-display area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a transmission line is disposed under the display panel for wireless communication, then energy radiation capability is improved, but display visibility and sensor sensitivity may be deteriorated
Solution Approach 1:
The patent divides the antenna structure into multiple segments: the display panel is segmented into display area and non-display area, the antenna is divided into a first antenna portion in the display area and a second antenna portion in the non-display area, and conductive partition walls are used to segment different functional zones. This segmentation allows energy radiation in the non-display area without affecting display visibility.
Solution Approach 2:
The patent utilizes the third dimension (vertical layering) by disposing the transmission line and antenna structures underneath the display panel in different layers. The feed line is disposed on an inner surface of the housing, while the antenna portions are arranged in specific vertical positions relative to the display panel, allowing energy radiation without obstructing the display area.
2Loss of energy
If conductive partition walls are added to guide energy radiation, then energy radiation efficiency is improved, but device complexity increases
Solution Approach 1:
The conductive partition walls serve multiple functions: they guide energy radiation from the first antenna portion to the second antenna portion, acts as part of the grounding structure, and help define the receiving space between the display panel and housing. The housing structure itself serves as both structural support and as part of the antenna system.
Solution Approach 2:
The patent merges the conductive partition walls with the grounding structure by connecting them to the lower conductive layer. The feed line structure is combined with the housing inner surface, and the antenna portions are integrated with the display panel structure, reducing the need for separate components.
3Loss of energy
If the transmission line is surrounded by conductive posts and housing sidewall, then energy resonance is improved, but manufacturing precision requirements increase
Solution Approach 1:
The housing sidewall serves dual purposes: as the structural boundary of the device and as part of the antenna resonance structure surrounding the transmission line. The lower conductive layer on the housing inner surface serves as both grounding and as part of the resonant cavity.
Solution Approach 2:
The patent provides flexibility in the positioning of the transmission line by allowing it to be disposed between the conductive partition wall and the housing sidewall, with the conductive partition wall extending parallel to the housing sidewall. This dynamic arrangement allows for manufacturing tolerances while maintaining the resonant structure.
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 configuration allows for efficient energy radiation without obstructing the display or reducing sensor sensitivity, simplifying antenna design and maintaining performance across various frequency bands.
Implementation Method 1
Energy radiated from the transmission line may resonate in a space defined by the display area of the display panel, the lower conductive layer, the conductive partition wall, and a sidewall of the housing and may be radiated through the non-display area of the display panel
Implementation Method 2
a conductive partition wall spaced apart from the transmission line and disposed to overlap the display area
Implementation Method 3
a slot may be defined in the lower conductive layer of lower member, and a signal may be proximity coupled feed to the transmission line through the slot
Data Source
AI summary
Disclosed is an electronic device that includes a window, a display panel that is disposed under the window and that has a display area and a non-display area defined therein, a lower member that is disposed under the display panel and that includes a lower conductive layer, a transmission line disposed between the display panel and the lower member, a conductive partition wall spaced apart from the transmission line and disposed to overlap the display area, and a housing coupled with the window to define a receiving space in which the display panel, the lower member, and the transmission line are disposed.