Patent ID: 8365609
Filing Date: 2013-02-05
Classification: G01B,G01L

Abstract:
1. A mechanical-quantity measuring device provided with a strain detection unit on a semiconductor substrate surface and attached to a measured obiect to measure a strain comprising a first sensor and a second sensor, wherein the first and second sensors are located on the same semiconductor substrate surface, wherein the first sensor and the second sensor comprise respectively, two pieces of n-type impurity diffusion resistors in which a current flows in a <100> direction, mutually provided in parallel and forming a resistor of the opposite side of a Wheatstone bridge, and two pieces of p-type diffusion resistors in which a current flows in a <100> direction and forming the resistors of the Wheatstone bridge, wherein the current flow direction of two pieces of the n-type impurity diffusion resistors of the first sensor is orthogonal to the current flow direction of two pieces of the n-type impurity diffusion resistors of the second sensor.