Metal Frame Antenna Coupling to Avoid Display Edge Overlap
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Solution Overview
Problem
The integration of metal frames as antenna radiators in electronic devices leads to degraded antenna performance due to overlapping flanges with display edges, which is exacerbated by the trend towards reduced bezels for increased display area.
Innovation Solution
A coupling member is designed to contact the conductive portion of the side surface in a direction different from the display, minimizing overlap and eliminating the need for a protruding flange, while being supported by a support member for stable assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a flange protrudes from the metal frame to connect with the PCB, then electrical connection is achieved, but antenna performance degrades due to overlap with display components
Solution Approach 1:
The patent changes the connection direction from the lateral dimension (flange protruding sideways) to the vertical dimension (coupling member approaching from below). The coupling member contacts the metal frame's lower surface, which is positioned away from the display area, thereby eliminating overlap while achieving electrical connection between the metal frame antenna and PCB
2Area of stationary object
If the bezel is reduced to increase display area, then display area increases, but overlap between flange and display edge increases causing antenna degradation
Solution Approach 1:
The patent extracts the harmful flange structure from the metal frame and replaces it with a separate coupling member. This coupling member is positioned below the metal frame, removing the source of interference with the display area while maintaining the necessary electrical connection function
3Reliability
If a coupling member is introduced to connect PCB and metal frame, then electrical connection is achieved, but assembly complexity increases
Solution Approach 1:
The coupling member is designed to perform multiple functions: it provides electrical connection between the PCB and metal frame antenna, positions the metal frame relative to the PCB, and eliminates interference with display components. This multi-functionality reduces the need for separate components and simplifies overall assembly
Data Source
AI summary
An electronic device includes a housing including a front surface facing a first direction, a rear surface facing a second direction opposite to the first direction, and a side surface surrounding an inner space between the front surface and the rear surface, where at least part of the side surface includes a conductive portion, a display provided on the front surface of the housing, a printed circuit board (PCB) provided in the inner space, and a coupling member provided on the PCB and coupled to the conductive portion of the side surface, wherein the coupling member contacts the conductive portion of the side surface in the second direction.