Dual-Display Attachment Layout Using Antenna Coupling
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Solution Overview
Problem
Dual display mobile devices experience high-frequency parasitic emission and require measures against electrostatic discharge when external terminals are connected, which can interfere with wireless communication and power supply.
Innovation Solution
The devices utilize electromagnetic field coupling between internal antennas on two removably attachable substrates to facilitate wireless communication without external terminals, enhancing coupling strength and reducing parasitic emission, while allowing for bidirectional or unidirectional signal transmission and power supply through internal contacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If external terminals are provided in each device for communication, then communication between devices is enabled, but high-frequency parasitic emission occurs
Solution Approach 1:
The patent removes external terminals from the communication interface and extracts the communication function to internal antennas. The first and second antennas perform wireless communication through electromagnetic field coupling, eliminating the need for external terminals that cause parasitic emission while maintaining communication capability between the first device and second device.
Solution Approach 2:
The patent replaces the mechanical connection system (external terminals and cables) with an electromagnetic field-based wireless communication system. Internal antennas use electromagnetic field coupling to transmit signals between devices, substituting the physical terminal connection with a field-based transmission mechanism that avoids parasitic emission issues.
2Ease of operation
If external terminals are connected for communication, then device communication is established, but measures against electrostatic discharge are required
Solution Approach 1:
The patent removes external terminals from the system and extracts the communication function to internal antennas. By eliminating the physical connection interface, the system removes the vulnerability to electrostatic discharge while maintaining communication capability through wireless electromagnetic coupling between the first and second devices.
3Strength
If antennas are arranged at superimposed positions in both connection states, then electromagnetic field coupling strength is enhanced, but antenna design complexity increases
Solution Approach 1:
The patent employs a movable second device that can switch between a first connection state (where the second rear surface covers the first display) and a second connection state (where the second rear surface does not cover the first display). In both states, the first and second antennas are positioned at superimposed locations, maintaining strong electromagnetic field coupling throughout the dynamic range of motion, thus enhancing coupling strength while managing design complexity through dynamic adaptability.
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 suppresses parasitic emission, ensures reliable wireless communication and power supply, and allows for flexible device connection states without interference, while maintaining electromagnetic coupling strength and enabling separate operation.
Implementation Method 1
the first device and the second device may be configured to perform first wireless communication through electromagnetic field coupling between the first antenna and the second antenna
Data Source
AI summary
An electronic device includes a first device and a second device. The first device and the second device are removably attachable to each other. The first device includes a first front surface, and a first display and a first connection portion arranged at the first front surface. The second device includes a second front surface, a second display arranged at the second front surface, a second rear surface located opposite to the second front surface, and a second connection portion arranged at the second rear surface. The second connection portion is connectable to the first connection portion in a first direction and a second direction opposite to the first direction. In a first connection state in which the second connection portion is connected to the first connection portion in the first direction, the second rear surface is arranged to cover the first display.