Low-intensity magnetic field sensor using printed circuit board manufacture technology and its manufacture method

Abstract

Disclosed is a weak magnetic field sensor using printed circuit board manufacturing technology and its manufacturing method, which obtains positioning information by detecting the earth's magnetic field. The sensor includes: a first substrate, the upper and lower surfaces of which form a first driving pattern, so that the upper and lower first driving patterns are electrically connected to each other; a pair of first stacking plates, which are stacked on the first substrate And the lower surface and the magnetic layers parallel to each other are formed thereon and a pattern of a certain shape is formed; and a pair of second stacked plates are stacked on the outer surfaces of the pair of first stacked plates, and are electrically connected to the first stacked plate. A second driving pattern of the first driving pattern of a substrate surrounds the magnetic layer and forms a pick-up pattern surrounding the first and second driving patterns.

Description

field of invention [0001] The invention relates to a weak magnetic field sensor using printed circuit board manufacturing technology and its manufacturing method, in particular to a weak magnetic field sensor using printed circuit board manufacturing technology that is suitable for being installed on a mobile communication terminal for detecting the earth's magnetic field to obtain position information. Magnetic field sensor and manufacturing method thereof. Background technique [0002] With the development of mobile phones and mobile terminals, among various additional services currently provided, positioning information service has gradually become an important service and has been established, and more accurate and convenient services will be required in the future. [0003] In order to obtain positioning information, it is necessary to provide a sensor capable of accurately determining the current position. As such means for providing positioning information, a weak ma...

AI Technical Summary

Problems solved by technology

However, since the earth magnetic field inhomogeneity detector disclosed in U.S. Patent No.5,936,403 and No.6,270,686 needs to include obtaining circular etched parts by etching amorphous plates, and stacking amorphous plates according to circular etched parts, The process of preparing an amorphous flat magnetic core and an epoxy substrate with X coils and Y coils stacked on the amorphous magnetic core is very complicated and causes high manufacturing costs due to stacking many amorphous plates

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