Foldable Display Dielectric Lattice Layout for Antenna Integrity
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Solution Overview
Problem
Foldable electronic devices using a metal layer for rigidity face antenna performance degradation due to high permittivity when the metal layer is replaced with a lightweight material.
Innovation Solution
The electronic device incorporates a housing with a dielectric layer having a lattice pattern and specific edge spacings to prevent antenna performance degradation, using a lightweight material for the metal layer and connecting it with a conductive member to maintain structural integrity and reduce damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If the metal layer is replaced with a lightweight material, then the weight of the electronic device is reduced, but the antenna performance is degraded due to high permittivity of the lightweight material
Solution Approach 1:
The patent applies local quality by creating different regions within the first layer: a first area with a lattice pattern near the hinge and a second area without the lattice pattern. This spatial differentiation allows the structure to provide both mechanical flexibility at the hinge and optimal antenna performance in other regions, resolving the contradiction between weight reduction and antenna performance.
Solution Approach 2:
The patent uses composite materials by combining the lightweight material with a specific structural pattern (lattice pattern in the first area). This composite approach maintains the weight advantage of lightweight materials while the lattice structure modifies the electromagnetic properties to prevent antenna performance degradation.
2Strength
If the metal layer is used to provide rigidity, then the structural strength is improved, but the weight of the electronic device increases
Solution Approach 1:
The patent employs a lattice pattern in the first area of the first layer, which creates a porous or open structure. This lattice structure provides adequate mechanical strength and rigidity while significantly reducing the weight compared to a solid metal layer, thus resolving the contradiction between strength and weight.
Solution Approach 2:
The patent uses composite materials by combining the lightweight material with a specific structural pattern (lattice pattern in the first area). This composite approach maintains the weight advantage of lightweight materials while the lattice structure modifies the electromagnetic properties to prevent antenna performance degradation.
3Length of moving object
If the first layer is spaced closer to the housing, then the device thickness is reduced, but the antenna performance is degraded
Solution Approach 1:
The patent applies local quality by creating different regions within the first layer: a first area with a lattice pattern near the hinge and a second area without the lattice pattern. This spatial differentiation allows the structure to provide both mechanical flexibility at the hinge and optimal antenna performance in other regions, resolving the contradiction between weight reduction and antenna performance.
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 prevents antenna performance degradation and reduces damage to the display by using a lightweight material for the metal layer while maintaining structural integrity and antenna functionality.
Implementation Method 1
a first layer disposed below the display panel, and including a dielectric, the first layer may include a first area adjacent to the hinge and including a lattice pattern and a second area excluding the first area
Data Source
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AI summary
An electronic device according to an embodiment may include a housing including a first housing which forms a first side surface of the electronic device, a second housing which forms a second side surface corresponding to the first side surface and a hinge which connects the first housing and the second housing, and switches between a folding state or an unfolding state based on the hinge, a wireless communication circuit disposed inside the housing, and transmitting and receiving signals of a designated frequency band by supplying power to at least a part of the housing, and a display structure coupled with the housing, the display structure may include a cover glass for forming at least a part of a front surface of the electronic device, a display panel disposed adjacent to one surface of the cover glass, and a first layer disposed below the display panel, and including a dielectric, the first layer may include a first area adjacent to the hinge and including a lattice pattern and a second area excluding the first area, a first edge of the first area may be spaced away from the first side surface by a first distance, a second edge of the second area may be spaced away from the first side surface by a second distance which is greater than the first distance, and at least a part of the housing may be connected with a ground through a conductive connection member disposed at a first point spaced away from the first side surface by a third distance which is smaller than the first distance. Various embodiments obtained through the specification are possible.