Semiconductor Channel Resistor Circuit With Substrate Parasitics
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Solution Overview
Problem
Conventional semiconductor channel resistor electrical circuits inaccurately reflect designed characteristics due to substrate resistance, substrate capacitance, and ohmic resistance components, leading to errors between intended and measured results.
Innovation Solution
An electrical circuit design that includes a main resistor and capacitor connected in parallel, with an ohmic resistor in series, and additional passive elements connected between ports and ground, accounting for substrate resistance and capacitance, using a substrate selection part, resistor selection part, and capacitor selection part to generate the circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a simple resistor or resistor-capacitor electrical circuit is generated for the semiconductor channel resistor, then the device complexity is reduced and ease of manufacture is improved, but the measurement precision and reliability deteriorate due to unaccounted substrate resistance, substrate capacitance, and ohmic resistance components
Solution Approach 1:
The electrical circuit is segmented into multiple distinct components: a main resistor representing the channel resistor, a main capacitor representing substrate capacitance, and additional ohmic resistors representing contact resistance. This segmentation allows each physical phenomenon to be modeled separately, improving measurement precision while maintaining manageable circuit complexity through modular structure.
Solution Approach 2:
Ohmic resistors are introduced as intermediary elements between the main resistor and the external circuit terminals. These intermediary components specifically model the contact resistance and substrate resistance effects, allowing the main resistor to represent only the channel resistance without being contaminated by parasitic effects, thereby improving overall measurement accuracy.
2Reliability
If substrate resistance and capacitance components are included in the electrical circuit model, then the reliability and measurement precision improve, but the device complexity increases due to additional passive elements
Solution Approach 1:
The electrical circuit model transitions from simple parameter values to comprehensive parameter sets that include substrate resistance, substrate capacitance, channel resistance, and contact resistance. By changing the parameters from single-value to multi-component representations, the model accurately captures the frequency-dependent and parameter-coupled behavior of the semiconductor channel resistor, improving reliability.
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 solution accurately represents the semiconductor channel resistor characteristics, enabling more precise design of semiconductor channel resistors and integrated circuits by incorporating substrate and ohmic resistance components.
Implementation Method 1
a first passive element part including a resistor and a capacitor connected in parallel between a first port and a second port
Implementation Method 2
an ohmic resistor connected in series to the resistor and the capacitor which are connected in parallel
Implementation Method 3
a resistance component of the substrate itself (i.e., substrate resistance), a substrate capacitance component
Data Source
AI summary
An apparatus and method for generating an electrical circuit of semiconductor channel resistor including a first passive element part including a resistor and a capacitor connected in parallel between a first port and a second port, and an ohmic resistor connected in series to the resistor and the capacitor which are connected in parallel are provided. The apparatus includes a substrate selection part configured to receive a selected substrate item; a resistor selection part configured to receive a selected resistor item; a capacitor selection part configured to receive a selected capacitor item; and a circuit generating part configured to generate an electrical circuit from the selected substrate item, the selected resistor item, and the selected capacitor item.