Patent ID: 9496487
Filing Date: 2016-11-15
CPC Classification: G01R,H01L

Claim Text:
1. A vertical Hall device including a deep N-well, a first outer contact, a first inner contact, a second inner contact and a second outer contact disposed at a surface of the deep N-well and arranged in this order along a straight symmetry line and symmetrically with respect to a central symmetry plane, wherein the two inner contacts and the two outer contacts are configured to operate either with the first outer contact and the second inner contact used to supply a current and the first inner contact and the second outer contact used to tap a Hall voltage or the first inner contact and the second outer contact used to supply a current and the first outer contact and the second inner contact used to tap the Hall voltage, the two inner contacts have a same length and a same effective width and the two outer contacts have a same length and a same effective width, wherein the lengths are measured along the straight symmetry line and the widths are measured perpendicularly to the straight symmetry line, and the effective width of the outer contacts is bigger than the effective width of the inner contacts.