Organic Magnetic Field Sensor Using Magneto-Electroluminescence
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Solution Overview
Problem
Existing magnetic field sensors require multiple Hall sensors to measure both the magnitude and orientation of magnetic fields, which increases power consumption and complexity.
Innovation Solution
A novel all-organic magnetic field sensor utilizing an organic light emitting diode (OLED) and an organic photodetector (OPD) that leverages magneto-electroluminescence to detect magnetic fields, allowing for a single sensor to measure both magnitude and orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple Hall sensors are used to measure magnetic field magnitude and orientation, then measurement capability is improved, but device complexity and power consumption increase
Solution Approach 1:
The patent combines multiple Hall sensors into a single integrated sensor structure where an array of Hall sensors is embedded within a single sensor body, allowing simultaneous measurement of magnetic field magnitude and orientation without requiring multiple separate sensor components
Solution Approach 2:
The integrated sensor performs multiple measurement functions (magnitude and orientation detection) through a single device, eliminating the need for separate Hall sensors and reducing overall system complexity while maintaining comprehensive measurement capability
2Measurement precision
If multiple Hall sensors are used to measure magnetic field magnitude and orientation, then measurement capability is improved, but power consumption increases
Solution Approach 1:
The patent merges multiple Hall sensor functions into a single integrated structure, reducing the total number of active components that consume power and thereby lowering overall power consumption while maintaining comprehensive magnetic field measurement capability
Solution Approach 2:
The single integrated sensor performs all required measurement functions (magnitude and orientation) that would otherwise require multiple separate sensors, reducing total power consumption by eliminating redundant sensor components
3Measurement precision
If multiple Hall sensors are used to measure magnetic field magnitude and orientation, then measurement capability is improved, but manufacturing complexity increases
Solution Approach 1:
The patent integrates multiple Hall sensors into a single manufactured component, simplifying the manufacturing process by reducing the number of separate fabrication steps and assembly operations required compared to producing and assembling multiple individual sensors
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 reduces power usage and complexity by enabling a single sensor to measure magnetic field magnitude and orientation, potentially leading to longer battery life in applications like smartphones, and allows for broader accessibility through printed electronics.
Implementation Method 1
The sensor function is believed to be driven by the large magneto-electroluminescence (MEL) of an OLED
Implementation Method 2
an organic photodetector (OPD) that leverages magneto-electroluminescence to detect magnetic fields
Implementation Method 3
which material has a magneto-resistive or magneto-electroluminescent signal that varies with the directionality and magnitude of a magnetic field
Implementation Method 4
The sensor function is believed to be driven by the large magneto-electroluminescence (MEL) of an OLED
Data Source
AI summary
A novel magnetic field sensor (MFS) may be created with an organic light emitting diode (OLED) made from an organic semiconductor material and an organic photodetector (OPD) built directly on top (or below) of the OLED, wherein at least one layer is made from an oriented molecular or polymer organic semiconductor material with strong magnetic anisotropy, and which material has a magneto-resistive or magneto-electroluminescent signal that varies with the magnitude and direction of a magnetic field to allow for measuring the vector of the external magnetic field.