Hall Sensor Layout Around IC Edges for Accurate Compact Detection
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Solution Overview
Problem
Conventional magnetic sensor devices with a single Hall element lack configurations for multiple magnetic detection elements, and the positional relationship between integrated circuits and multiple detection elements is not considered, hindering accurate and miniaturized magnetic detection.
Innovation Solution
A magnetic sensor device with a wiring board featuring multiple magnetic detection elements disposed outside an integrated circuit, with their magnetism sensing directions parallel to each other along opposite edges, reducing distance variations and noise interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple magnetic detection elements are mounted on the substrate, then detection accuracy is improved, but device size increases
Solution Approach 1:
The patent combines multiple magnetic detection elements (first and second Hall elements) and their corresponding integrated circuits onto a single substrate, creating a compact multi-element sensor device that achieves high detection accuracy without proportionally increasing device size
Solution Approach 2:
The patent arranges magnetic detection elements and integrated circuits in a specific spatial configuration on the substrate, utilizing two-dimensional placement optimization to minimize device footprint while maintaining accurate magnetic field detection capabilities
2Object-affected harmful factors
If distance between magnetic detection elements and integrated circuit is reduced, then noise interference is suppressed, but manufacturing precision requirements increase
Solution Approach 1:
The patent integrates multiple magnetic detection elements and their corresponding integrated circuits in close proximity on a single substrate, reducing the distance between components to minimize noise interference while maintaining functional performance
Solution Approach 2:
The patent applies different functional zones on the substrate, with magnetic detection elements positioned in specific regions and integrated circuits placed adjacent to them, optimizing local signal transmission quality and minimizing noise interference through strategic spatial arrangement
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
Facilitates highly accurate magnetic detection and miniaturization by shortening distances between detection elements and the integrated circuit, suppressing noise, and optimizing space utilization on the wiring board.
Implementation Method 1
a magnetic sensor device 9 includes a Hall element 91 having a cross-shaped magnetism sensing portion formed of a semiconductor layer
Data Source
AI summary
A magnetic sensor device includes a wiring board, a plurality of magnetic detection elements mounted on the wiring board, and a rectangular integrated circuit electrically connected to the plurality of magnetic detection elements. The plurality of magnetic detection elements is disposed outside the integrated circuit when viewed in a direction normal to the wiring board. The magnetic detection elements whose magnetism sensing directions are parallel to each other are disposed at least at positions along two edges of the integrated circuit, the two edges being opposite each other.