Rollable Display Housing Antenna Isolation During Sliding
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Solution Overview
Problem
In rollable electronic devices, the sliding operation causes degradation in antenna radiation performance due to the overlap of conductive components, leading to reduced communication efficiency.
Innovation Solution
Incorporating a dielectric structure between the metallic portions of the first and second housings in the slide-in state to minimize interference and maintain consistent antenna performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the second housing slides into the first housing to achieve a compact form factor, then the portability and space utilization are improved, but the antenna radiation performance deteriorates due to contact between conductive members
Solution Approach 1:
A dielectric member is introduced as an intermediary between the first housing and the conductive member of the second housing. This dielectric member prevents direct contact between conductive components during sliding operation, thereby maintaining antenna radiation performance while enabling the compact folded form factor.
Solution Approach 2:
The electrical properties of the housing structure are changed by introducing a dielectric material with different electromagnetic characteristics compared to conductive materials. This parameter change in material properties prevents electromagnetic interference and contact between conductive parts during sliding, resolving the contradiction between compactness and antenna performance.
2Strength
If conductive members are used in both housings for structural strength and antenna function, then the rigidity and wireless communication capability are improved, but interference and contact between conductive components occur during sliding
Solution Approach 1:
The dielectric member serves as a mediator that physically separates conductive components from different housings. This prevents harmful electromagnetic interference and direct contact between conductive members while allowing both housings to maintain their conductive structures for strength and antenna functionality.
Solution Approach 2:
Different regions of the housing structure are assigned different material properties: conductive materials are used where structural strength and antenna function are needed, while dielectric material is specifically introduced at the interface region where sliding contact occurs. This local differentiation of material quality prevents interference while maintaining overall structural integrity.
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
The dielectric structure effectively reduces the degradation of antenna radiation performance by preventing physical and electromagnetic contact between conductive components, ensuring consistent communication efficiency during sliding operations.
Implementation Method 1
at least one dielectric disposed between a metallic material portion of the first housing and the conductive member of the second housing in a slide-in state of the second housing into the first housing
Data Source
AI summary
According to various embodiments, an electronic apparatus may comprise: a first housing, of which left and right lateral portions at least partially comprise a metallic material; a second housing which can slide relative to the first housing and of which left and right lateral portions at least partially comprise a conductive member; a wireless communication circuit disposed in the second housing and configured to transmit and/or receive wireless signals via a conductive member comprising a conductive material; a rollable display supported by the first housing and the second housing and configured to bend or unfold based on the slide-in or slide-out of the second housing; and at least one dielectric material disposed between the metallic material portion of the first housing and the conductive member of the second housing in a state in which the second housing has slid inside the first housing.