Tunable Homojunction Logic Circuit for Reconfigurable Low-Transistor Logic

Solution Overview

Problem

Conventional silicon-based logic circuits are inflexible, resource-intensive, and lack biocompatibility, making them unsuitable for emerging applications such as artificial intelligence and implantable medical devices that require low power consumption and multi-functional capabilities.

Innovation Solution

A tunable homojunction field effect device-based unit circuit with two transistors and a unique gate electrode configuration allows for various logical operations by adjusting voltage biases, enabling a single device to perform multiple functions and reducing transistor resource requirements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If conventional silicon-based logic circuits are used to construct multi-functional logic circuits, then the circuit can perform multiple logical operations, but the transistor resources consumed increase significantly

Engineering Contradiction:

Improvemulti-functional capabilityVSAvoidtransistor resources

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements a single logic circuit that can perform multiple logical operations (AND, OR, XOR, NOT, NAND, NOR) by configuring different voltage levels at the control terminal, eliminating the need for separate circuits for each logical function and significantly reducing transistor resource consumption

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent uses dynamically adjustable voltage levels at the control terminal to reconfigure the logic circuit's functionality in real-time, allowing the same physical circuit to adapt to different logical operations based on the applied voltage, thereby achieving multi-functionality without increasing hardware complexity

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If conventional silicon-based logic circuits are used to construct multi-functional logic circuits, then the circuit can perform multiple logical operations, but the power consumption increases

Engineering Contradiction:

Improvemulti-functional capabilityVSAvoidpower consumption

Core Design Contradiction:

Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The patent implements a single logic circuit that can perform multiple logical operations (AND, OR, XOR, NOT, NAND, NOR) by configuring different voltage levels at the control terminal, eliminating the need for separate circuits for each logical function and significantly reducing transistor resource consumption

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent uses dynamically adjustable voltage levels at the control terminal to reconfigure the logic circuit's functionality in real-time, allowing the same physical circuit to adapt to different logical operations based on the applied voltage, thereby achieving multi-functionality without increasing hardware complexity

Inventive Principle:

Principle #15Dynamics

3Ease of operation

If conventional silicon-based logic circuits are used, then the circuit can perform logical operations, but the flexibility and biocompatibility are poor

Engineering Contradiction:

ImproveflexibilityVSAvoidbiocompatibility

Core Design Contradiction:

Ease of operationVSAdaptability or versatility

Solution Approach 1:

The patent changes the physical and chemical parameters of the logic circuit by using flexible substrate materials and adjustable voltage levels, enabling the circuit to adapt to different application environments including biocompatible applications where silicon-based circuits would be unsuitable

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS20230198520A1Tunable homojunction field effect device-based unit circuit and multi-functional logic circuit

Publication Date: 2023.06.22 NANJING UNIV

AI summary

A tunable homojunction field effect device-based unit circuit and a multifunctional logic circuit, and the corresponding design scheme includes four steps: a structural construction of the tunable homojunction device, an implementation of multi-functional electrical operations of the tunable homojunction device, a design of a basic logic unit circuit, and an implementation of complex logic functions by a cascaded unit logic circuit; the first designs a tunable homojunction device based on a material with bipolar field effect characteristics; and then introduces the polarity of source-drain voltage into the device as an additional control signal; further, by cascading three reconfigurable logic units, the multi-functional logic circuit that can perform logic functions of full adder and subtractor is designed; the logic unit circuit designed in the present invention has the ability to perform reconfigurable logic functions.