Patent ID: 9016135
Filing Date: 2015-04-28
Classification: G01D,G01L,G01R

Abstract:
1. A stress sensor for detecting mechanical stress in a semiconductor chip, the stress sensor having four resistors R 1 to R 4 integrated in an active surface of the semiconductor chip, the resistors R 1 to R 4 forming a Wheatstone bridge, in which the resistors R 1 and R 2 are connected in series, the resistors R 3 and R 4 are connected in series and in parallel to the resistors R 1 and R 2 the resistors R 1 and R 3 have a common node and the resistors R 2 and R 4 have a common node, the resistors R 1 and R 4 being p-type resistors and the resistors R 2 and R 3 being n-type resistors wherein each of the n-type resistors R each of the resistor sections has a predetermined orientation in the plane defined by the active surface of the semiconductor chip, and a sum of the resistance values of all resistor sections which have a first orientation and belong to the same resistor R