Patent ID: 7626377
Filing Date: 2009-12-01
Classification: G01R,H01L

Abstract:
1. A Hall-effect apparatus having a complementary structure comprising; an n-type epitaxial Hall element, wherein said n-type epitaxial Hall element comprises a first pair of sensing contacts disposed on a substrate layer, said n-type epitaxial Hall element surrounded vertically by an isolation layer; a p-type Hall element comprising a second pair of sensing contacts implanted on a region of said n-type epitaxial layer isolated from said n-type epitaxial Hall element, wherein said n-type epitaxial Hall element and said p-type Hall element are biased in a parallel arrangement in order to provide similar quiescent output voltages thereof; and an insulation layer associated with a plurality of conductors disposed above said n-type epitaxial Hall element and said p-type Hall element, thereby geometrically connecting said second pair of sensing contacts to said first pair of sensing contacts through a resistive network and providing an output signal thereof through said first pair of sensing contacts.