Differentially Doped Gate Electrodes for Threshold Voltage Coding
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Solution Overview
Problem
Current semiconductor devices lack the ability to effectively differentiate between logic values '0' and '1' due to similar threshold voltages in transistors, limiting their capacity to generate unique codes for identification.
Innovation Solution
The semiconductor device incorporates gate electrodes doped with dopants of different conductive types, modifying the threshold voltage of transistors to allow for distinct current measurements, enabling the differentiation between logic values '0' and '1' and generating a code for identification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If transistors use identical gate electrode doping, then manufacturing process is simple, but threshold voltage differentiation is insufficient for logic value identification
Solution Approach 1:
The patent applies local quality by doping different gate electrodes with different dopant types (n-type vs p-type) to create localized electrical property variations. This enables each gate electrode to have distinct threshold voltages, allowing precise differentiation between logic values '0' and '1' while maintaining a relatively simple overall doping process structure.
Solution Approach 2:
The patent changes the electrical parameters of gate electrodes by introducing different dopant types, which fundamentally alters the threshold voltage characteristics. This parameter change enables the transistor to distinguish between different logic states through measurable current differences, directly resolving the measurement precision issue.
2Adaptability or versatility
If gate electrodes are doped with different dopant types, then logic value differentiation capability is improved, but manufacturing process complexity increases
Solution Approach 1:
The patent segments the gate electrode array into distinct groups that receive different dopant treatments. By dividing the gate electrodes into those doped with n-type dopants and those doped with p-type dopants, the system achieves enhanced logic operation capability while using standard segmented doping工艺流程, thus not significantly increasing manufacturing complexity.
Solution Approach 2:
The patent makes the gate electrode structure universal by enabling it to serve multiple functions through differential doping. The same basic gate electrode structure can be selectively doped with different dopant types to create both n-type and p-type devices, allowing the system to perform multiple logic functions without requiring fundamentally different structures, thereby maintaining ease of manufacture.
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
This approach allows for the configuration of semiconductor devices to generate unique codes by modifying the threshold voltage of transistors, enabling accurate identification and logic operations.
Implementation Method 1
The first gate electrode is doped with a first dopant of a first conductive type. The second gate electrode is doped with a second dopant of a second conductive type different from the first conductive type.
Data Source
AI summary
A semiconductor device is provided. The semiconductor device includes a substrate, a first gate electrode, and a second gate electrode. The first gate electrode is disposed on the substrate. The first gate electrode has a first dopant of a first conductive type. The second gate electrode is disposed on the substrate. The second gate electrode has a second dopant of a second conductive type different from the first conductive type.