Pressure Sensor Rectifying Interface Eliminates Crosstalk
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Resistive pressure sensors face electrical crosstalk issues due to transistor-based structures, leading to reduced precision and increased complexity, which complicates the development of deformable and high-performance pressure sensors.
Innovation Solution
A 2-terminal structure with a rectifying interface using a Schottky junction between a conductive layer and an active layer, composed of polymers and metal oxide semiconductors, reduces complexity and prevents electrical crosstalk, allowing for high-resolution pressure sensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If transistors are integrated into each pixel to prevent electrical crosstalk, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent extracts the rectifying function from complex transistor structures and implements it through a simple Schottky junction interface between the conductive layer and active layer. This eliminates the need for transistors while maintaining the ability to prevent electrical crosstalk and enable pixel-level control, thereby resolving the contradiction between measurement precision and device complexity.
Solution Approach 2:
The Schottky junction interface acts as an intermediary element that provides rectifying functionality without requiring complex transistor structures. This intermediate layer enables precise measurement by preventing electrical crosstalk while keeping the overall device structure simple and suitable for flexible substrates.
2Measurement precision
If transistors are used for each pixel, then electrical crosstalk is prevented, but mechanical reliability deteriorates
Solution Approach 1:
The patent removes the transistor component entirely and replaces it with a Schottky junction interface that inherently provides the necessary electrical control and crosstalk prevention. This extraction of the rectifying function from complex transistor structures to a simple material interface significantly improves mechanical reliability while maintaining measurement precision.
3Adaptability or versatility
If organic materials are used in transistors for deformability, then adaptability is improved, but manufacturing precision deteriorates
Solution Approach 1:
The patent extracts the rectifying functionality from organic transistor structures and implements it through a Schottky junction interface. This approach maintains the benefits of organic materials for deformability while eliminating the manufacturing precision issues associated with creating high-performance organic transistors, as the rectifying behavior emerges naturally from the material interface.
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 effectively eliminates electrical crosstalk, enhances sensitivity, and reduces mechanical failure risks in deformable devices, while lowering production costs and complexity.
Implementation Method 1
an interface between the conductive layer and the active layer may be a rectifying interface using a Schottky junction
Data Source
AI summary
The present invention relates to a pressure sensor, a pressure-sensor matrix array including the same, and a manufacturing method thereof, the pressure sensor including a first electrode, a conductive layer positioned on the first electrode and including a conductor, an active layer positioned on the conductive layer, being in contact with or being spaced apart from the conductive layer and including a polymer and a semiconductor dispersed in the polymer, and a second electrode positioned on the active layer. The pressure sensor and the pressure-sensor matrix array according to the present invention are capable of eliminating electrical crosstalk between pixels using a rectifying interface in a pressure sensor matrix having high sensitivity to resistance, thereby forming a high-resolution pressure sensor array, and moreover, processing costs and complexity are reduced, which is advantageous for industrial applications.