Semiconductor Base Electrostatic Protection Diode Circuit
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Solution Overview
Problem
Semiconductor devices with a resistor component connected in series with the base electrode are vulnerable to electrostatic damage, leading to potential instability or malfunction.
Innovation Solution
Incorporating a protection component with a pair of diodes formed by a pn junction, connected in parallel with the resistor component, to divert static electricity and prevent damage, along with an insulating layer and wiring layers to enhance protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a resistor component is connected in series with the base electrode to improve the linearity of collector current response, then the operation stability is improved, but the device becomes vulnerable to electrostatic damage
Solution Approach 1:
A protection component is introduced as an intermediary element connected in parallel with the resistor component. This protection component acts as a mediator that diverts electrostatic charges away from the resistor, preventing damage while allowing the resistor to maintain its function of linearizing the collector current response. The protection component includes a pair of diodes with opposite polarities that provide safe discharge paths for electrostatic charges.
Solution Approach 2:
The protection component converts the harmful electrostatic charges into a beneficial protective mechanism. By providing a dedicated discharge path through the pair of diodes, the electrostatic energy that would otherwise damage the resistor is redirected through the protection component, transforming a potential harm into a controlled energy dissipation mechanism that enhances overall device reliability.
2Object-affected harmful factors
If a protection component is added to protect the resistor from electrostatic damage, then the electrostatic tolerance is improved, but the device complexity increases
Solution Approach 1:
The protection component is merged with the existing resistor component by connecting them in parallel within the same circuit structure. This integration allows the protection function to be added without requiring completely separate circuitry, thereby minimizing the increase in device complexity. The pair of diodes are incorporated into the existing base electrode circuitry, sharing space and functional pathways where possible.
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 semiconductor device effectively protects the resistor component from electrostatic damage, ensuring stable operation by diverting static electricity and increasing the tolerance to electrostatic interference.
Implementation Method 1
the protection component comprises a pair of diodes formed by a pn junction and by a way of making both ends of the conductive path into a same polarity
Data Source
AI summary
The present disclosure provides a semiconductor device that prevents a resistor component connected in series with a base electrode from the electrostatic damage. A semiconductor device includes, a collector layer, which is a first conductivity type semiconductor, a base layer, which is a second conductivity type semiconductor and connected with the collector layer, an emitter layer, which is the first conductivity type semiconductor and connected with the base layer, a first electrode, electrically connected to the base layer, a first resistor component, connected in series with the first electrode in a conductive path connecting the first electrode and the base layer, a second electrode, electrically connected to the emitter layer and the first resistor component; and a protection component, connected to the first electrode in parallel with the first resistor component, wherein the protection component comprises a pair of diodes formed by a pn junction and by a way of making both ends of the conductive path into a same polarity.