Mobile Terminal Coil Antenna Front Surface Placement
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Solution Overview
Problem
The challenge is to accommodate multiple antennas in mobile terminals with limited mounting space, particularly when the display unit extends to the rear surface, which restricts the arrangement of coil antennas used for short-range wireless communication, payment functions, and wireless charging, due to interference from metal materials and electronic components.
Innovation Solution
The solution involves a mobile terminal design with a support frame that includes openings and a reinforcement member to allow coil antennas to be positioned on the front surface, using a flexible display panel and adhesive tape for fixation, and optimizing antenna placement to radiate signals forward while maintaining the rigidity of the support frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the display unit extends to the rear surface of the mobile terminal, then the display area is increased, but the mounting space for coil antennas is reduced
Solution Approach 1:
The patent positions coil antennas on the front surface of the mobile terminal rather than the conventional rear surface, utilizing the front surface space that becomes available when the display extends to the rear. This dimensional repositioning allows both the extended display and antenna mounting to coexist without interference.
2Reliability
If coil antennas are positioned on the rear surface, then wireless communication functions are achieved, but signal radiation is blocked by metal materials and electronic components
Solution Approach 1:
The patent extracts the coil antennas from the rear surface environment where they would be blocked by metal back covers and electronic components, and repositions them on the front surface where they can radiate signals forward without obstruction from interfering materials.
3Reliability
If coil antennas are arranged on the front surface, then signal radiation in forward direction is achieved, but the support frame rigidity may be compromised
Solution Approach 1:
The support frame is designed with localized openings at specific positions to accommodate the coil antennas, rather than compromising the overall frame structure. This segmentation approach maintains frame rigidity while providing necessary antenna mounting spaces.
Solution Approach 2:
The support frame exhibits different structural properties at different locations: it has openings where antennas need to be mounted and maintains solid rigid structure in other areas. This local quality variation allows the frame to simultaneously support antenna placement and maintain 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
This design secures optimal antenna performance by allowing coil antennas to be arranged on the front surface, overcoming space constraints and ensuring efficient wireless communication, payment, and charging functions without compromising the structural integrity of the support frame.
Implementation Method 1
a first coil antenna positioned on a rear surface of the support frame that is opposite the display panel and wherein a portion of the first coil antenna is arranged across the open slit... electromagnetic signal of the first coil antenna is radiated through the open slit of the support frame in a forward direction of the display panel
Data Source
Figure 1
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Figure 4
AI summary
Disclosed herein is a mobile terminal including a body, a display panel coupled to the body with one surface thereof facing outward, the one surface allowing an image to be output therethrough, a fingerprint sensor positioned on an opposite surface of the display panel, a first coil antenna disposed around the fingerprint sensor, a support frame including an opening and configured to support the opposite surface of the display panel, the fingerprint sensor and the first coil antenna being positioned in the opening, and a controller configured to apply electric current to the first coil antenna. The mobile terminal may increase utilization of the rear surface thereof by arranging coil antennas on the front surface thereof.