Guide-Connected Contactor for ESD Protection and RF Signal Transmission
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Solution Overview
Problem
Portable electronic devices face issues with static electricity damage, electrical connection failures, and RF signal attenuation due to conductive gaskets or contactors, which also pose safety risks and design challenges, particularly when metal housings are used as antennas.
Innovation Solution
A guide-connected contactor with an elastic conductor, a functional element, and a guide that includes alignment members and a wing portion, allowing for stable coupling, easy position alignment, and reduced RF loss, while providing electrostatic discharge protection and communication signal transmission functions without increasing device size or component count.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conductive gasket or conductive contactor is provided between the external housing and the internal circuit board, then electrical connection and electromagnetic shielding are improved, but static electricity may be introduced into the internal circuit board causing damage to circuits
Solution Approach 1:
The contactor is divided into multiple functional units: a first contactor unit for electrical connection, a second contactor unit for ESD protection, and a third contactor unit for grounding. This segmentation allows each unit to perform its specific function independently, enabling electrical connection while protecting against static electricity damage through the dedicated ESD protection unit with higher breakdown voltage characteristics
Solution Approach 2:
The ESD protection unit acts as an intermediary between the housing and circuit board, providing a controlled path for static electricity discharge. This intermediate layer protects the internal circuits by diverting harmful static electricity while maintaining normal electrical connection functionality through the first contactor unit
2Reliability
If a functional contactor is coupled to a conductive case, then protection functions and signal transmission are achieved, but stable connection is difficult because soldering work is difficult and design change according to groove shape is not easily achieved
Solution Approach 1:
The contactor uses elastic conductive members that can deform elastically to adapt to different groove shapes and coupling positions. This dynamic flexibility allows the contactor to achieve stable electrical connection and protection functions without requiring precise soldering or complex design changes, as the elastic deformation compensates for manufacturing tolerances and groove variations
Solution Approach 2:
The contactor design allows easy modification of electrical parameters such as contact pressure, contact area, and breakdown voltage by changing the physical dimensions and material properties of the elastic conductive members. This enables adaptation to different groove configurations and protection requirements without fundamental design changes, improving manufacturing flexibility
3Adaptability or versatility
If the metal housing is used as an antenna, then communication signal transmission is enabled, but signal attenuation that interrupts RF signal transmission occurs when the capacitance is low
Solution Approach 1:
The contactor is designed with pre-calculated capacitance values and electrical characteristics that are optimized for RF signal transmission. By preliminarily designing the contactor with appropriate capacitance and conductive path geometry, the system ensures minimal RF signal attenuation when the metal housing functions as an antenna, eliminating the need for additional capacitance compensation
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 guide-connected contactor enhances manufacturing efficiency, reduces failure rates, improves design flexibility, and ensures stable electrical connections, while minimizing RF loss and enhancing safety by providing effective electrostatic discharge protection and communication signal transmission.
Implementation Method 1
an elastic conductor configured to come into contact with a circuit board of an electronic device or a bracket coupled to the circuit board
Implementation Method 2
to reduce electromagnetic waves introduced into or propagated from the portable electronic device
Implementation Method 3
a functional element connected to the elastic conductor and having a first electrode and a second electrode on upper and lower surfaces thereof, respectively
Data Source
AI summary
Provided are a guide-connected contactor and a portable electronic device comprising same. A guide-connected contactor, according to an embodiment of the present invention, comprises: an elastic conductor which comes in contact with a circuit board of an electronic device or a bracket connected to the circuit board; a functional element which is connected to the elastic conductor and has a first electrode and a second electrode on the upper surface and the lower surface, respectively; and a guide which is plate-shaped, has the functional element connected thereto, and is connected to a groove portion provided on a conductive case of the electronic device.