Patent ID: 6639290
Filing Date: 2003-10-28
Classification: G01D,H01L

Abstract:
A Hall sensor element comprising an active area and contact electrodes, wherein said contact electrodes are formed by two opposite current supply contact electrodes between which said active area is defined for generating a current flow through said active area and by two opposite voltage-tapping contact electrodes for tapping-off a hall voltage; andwherein a portion of said contact electrodes facing said active area and being adjacent to said active area extends between two end points and has a geometry between said two end points that is step-shaped, circular segment-shaped, elliptic, parabola-shaped, hyperbola-shaped or trapezoid-shaped or has a rectangular extension, in order to reduce the interfering influence of said contact electrodes on the offset-reducing effect of the spinning current operation, wherein all contact electrodes have an identical size, shape, and spatial relationship and are symmetrically disposed referring to said active area, respectively and wherein the side length between said two end points of said contact electrodes is, at the most, 20% of the length of said active area.