Resistor Element With ESD Bypass Terminal
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Solution Overview
Problem
Portable electronic devices are vulnerable to external noise such as electrostatic discharge (ESD), which can cause damage to resistor elements and integrated circuits due to abnormal voltage, and existing solutions that increase the number of resistors to prevent this occupy valuable space, compromising the miniaturization and precision of these devices.
Innovation Solution
A resistor element with a base substrate, resistor layer, and ESD-preventing members that connect terminals to a separate third terminal, allowing overvoltage energy to be bypassed and discharged, reducing the risk of damage and maintaining compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple resistors are used to prevent damage from overvoltage events, then the reliability of the circuit is improved, but the space occupied by the circuit increases
Solution Approach 1:
The patent combines multiple resistor elements into a single integrated structure where multiple resistor layers are stacked on top of each other on the same base substrate. This merging approach achieves the reliability of multiple resistors while occupying minimal space, as all resistor elements share the same physical footprint on the circuit board.
Solution Approach 2:
The patent transitions from a two-dimensional arrangement of resistors (where multiple resistors would be placed side by side on the circuit board) to a three-dimensional stacked structure. By stacking resistor layers vertically on the base substrate, the design utilizes the vertical dimension to accommodate multiple resistor elements without increasing the horizontal space occupied.
2Reliability
If the number of resistors is increased to improve anti-surge performance, then the reliability is improved, but the device complexity increases
Solution Approach 1:
Multiple resistor elements are merged into a single integrated component with a unified base substrate and shared terminal connections. This reduces circuit complexity by eliminating the need for multiple separate resistor components and their individual mounting, while still providing the anti-surge performance of multiple resistors through the stacked layer configuration.
Solution Approach 2:
The base substrate and terminal structures serve multiple functions simultaneously: they provide mechanical support for multiple resistor layers, establish electrical connections for all resistor elements, and enable both normal circuit operation and overvoltage protection functions within a single integrated component.
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 resistor element effectively prevents damage from overvoltage events by bypassing electric energy to a separate terminal, enhancing anti-surge performance and reducing fatigue, thus improving the reliability and compactness of portable electronic devices.
Implementation Method 1
ESD-preventing members may electrically connect the first terminal to the third terminal and electrically connect the second terminal to the third terminal
Data Source
AI summary
A resistor element includes a base substrate having first and second surfaces opposing each other; a resistor layer disposed on the first surface of the base substrate; first and second terminals disposed on opposing end portions of the base substrate, respectively, and electrically connected to opposing sides of the resistor layer, respectively; a third terminal disposed between the first terminal and the second terminal on the second surface of the base substrate and spaced apart from the first terminal and the second terminal; and electrostatic discharge (ESD)-preventing members connecting the first terminal and the third terminal to each other and connecting the second terminal and the third terminal to each other.