Composite Electronic Component Integrated ESD Protection
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Solution Overview
Problem
The miniaturization and integration of portable electronic devices make it challenging to provide effective electrostatic discharge (ESD) protection, as separate ESD protecting elements are difficult to incorporate, leading to increased risks of electrical shocks and internal power defects.
Innovation Solution
A composite electronic component is designed with an integrated multilayer ESD protection part, featuring external electrodes, a dielectric body, and an ESD discharge layer between discharge electrodes, which enhances resistance to ESD by ensuring uniform current flow and preventing damage from overvoltage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate ESD protecting elements are provided in portable electronic devices, then ESD protection performance is improved, but device miniaturization and integration are hindered
Solution Approach 1:
The patent combines the ESD protection function with the existing external electrode structure of the electronic component. The ESD protection element is integrated into the electrode assembly, where the external electrode serves dual purposes: as a standard electrical connection and as part of the ESD protection path. This merging eliminates the need for separate ESD protection elements, achieving both ESD protection and device miniaturization.
Solution Approach 2:
The external electrode structure is designed to perform multiple functions: it serves as both the normal electrical connection terminal and as part of the ESD protection mechanism. The electrode configuration enables it to handle both standard signal/power transmission and ESD current dissipation, making the structure universal and eliminating the need for dedicated ESD protection components.
2Strength
If metal frame is used for entire surface of portable electronic device, then aesthetics and strength are improved, but ESD protection and electric shock prevention become more critical and difficult to implement
Solution Approach 1:
The patent applies ESD protection specifically at the external electrode locations where electrical connections are made. Instead of attempting to protect the entire metal frame surface uniformly, the protection is localized to the critical connection points. The ESD protection element is positioned at the external electrode to provide targeted protection against ESD and electric shock at these vulnerable interfaces.
Solution Approach 2:
The ESD protection element acts as an intermediary between the metal frame structure and the internal electronic components. It provides a controlled path for ESD current and fault current, mediating the interaction between the external metal housing and internal sensitive electronics. This intermediary structure safely channels harmful currents away from vulnerable components.
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 integrated multilayer ESD protection effectively improves the durability and reliability of the composite electronic component against ESD and overvoltage, preventing damage to both the element part and the ESD protection part by ensuring uniform current distribution and maintaining resistance.
Implementation Method 1
an ESD discharge layer disposed on the first discharge electrode
Implementation Method 2
first and second electrodes disposed in the dielectric body and electrically connected to the first and second external electrodes, respectively
Data Source
AI summary
A composite electronic component includes a body having first and second external electrodes disposed on outer surfaces thereof and including a dielectric body; first and second electrodes disposed in the dielectric body and electrically connected to the first and second external electrodes, respectively; a third electrode disposed on the body and electrically connected to the first external electrode; an electrostatic discharge (ESD) layer disposed on the third electrode; and a fourth electrode disposed on the ESD discharge layer and electrically connected to the second external electrode.