Unlock instant, AI-driven research and patent intelligence for your innovation.

Magnetic sensor module and ic chip for the magnetic sensor module

A magnetic sensor and chip technology, applied in the direction of converting sensor output, magnetic field control resistor, magnetic field size/direction, etc., can solve problems such as increased manufacturing cost and increased size of magnetic sensor chip

Active Publication Date: 2022-06-24
ASAHI KASEI ELECTRONICS CO LTD +1
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, according to this method, there is a problem that the size of the magnetic sensor chip on which the magnetic sensor is mounted increases and the manufacturing cost increases.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Magnetic sensor module and ic chip for the magnetic sensor module
  • Magnetic sensor module and ic chip for the magnetic sensor module
  • Magnetic sensor module and ic chip for the magnetic sensor module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0096] Hereinafter, the present invention will be described with reference to the embodiments of the invention, but the following embodiments do not limit the technical solutions related to the claims. In addition, not all the contents of the combination of the features described in the embodiments are necessarily required for the solution of the invention.

[0097] figure 1 A block diagram illustrating the function of the magnetic sensor module 10 of the present embodiment is shown. The magnetic sensor module 10 of the present embodiment adjusts the sensitivity of the magnetic sensor by applying a uniform calibration magnetic field to the magnetic sensor using the coil built in the IC chip. The magnetic sensor module 10 has a magnetic sensor chip 100 and an IC chip 200 .

[0098] The magnetic sensor chip 100 measures an external magnetic field. The magnetic sensor chip 100 may have a plurality of magnetic sensors of one or more, thereby detecting magnetism in one or more ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

An object of the present invention is to provide a magnetic sensor module that provides a uniform calibration magnetic field to a magnetoresistive element and suppresses the size of a magnetic sensor chip. The present invention provides a magnetic sensor module comprising: an IC chip having a first coil; and a magnetic sensor chip disposed on a surface of the IC chip and having a first magnetic sensor for detecting magnetism in a first axial direction, The planar shape of the IC chip encloses the planar shape of the magnetic sensor chip, and the first coil has a planar shape including three or more sides, and is formed such that a cross-section of at least one side of the planar shape In viewing angle, it covers the area in the direction of one side of the first magnetic sensor.

Description

technical field [0001] The invention relates to a magnetic sensor module and an IC chip. Background technique [0002] In order to maintain the accuracy of the magnetic sensor, it is desirable to correct the sensitivity during operation. Therefore, there is known a method of supplying a constant current to a sensitivity adjustment coil built in a magnetic sensor chip, generating a known magnetic field, and measuring the magnetic field to adjust the sensitivity of the magnetic sensor during operation (for example, Patent Document 1). and Patent Document 2). [0003] For example, when a magnetoresistive element constituting a Wheatstone bridge circuit is used as a magnetic sensor, in order to accurately adjust the sensitivity of the magnetic sensor, it is necessary to apply a uniform calibration magnetic field to the magnetoresistive element. On the other hand, there is known a method of forming a sensitivity adjustment coil on the same substrate as the magnetic sensor and c...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01R33/02G01R33/09G01R35/00H01L43/08
CPCG01R33/09G01R35/00G01R33/0035G01R33/0052H10N50/10G01D5/2006
Inventor 奥津吉隆吉田将规石田一裕渡部司也平林启酒井正则
Owner ASAHI KASEI ELECTRONICS CO LTD