Patent ID: 7151431
Filing Date: 2006-12-19
Classification: G01L,H01C,H05K,Y10T

Abstract:
1. A stress sensor comprising: a insulating board having first and second surfaces, the second surface being opposite the first surface; a post bonded to or integrated with the first surface of the insulating board; a plurality of resistor elements disposed on the second surface of the insulating board, the resistor elements being composed of a plurality of resistors; a plurality of resistor-element electrodes disposed on the second surface of the insulating board; a plurality of board terminal pads disposed on the second surface of the insulating board proximate one end thereof; and a plurality of conductors disposed on the second surface of the insulating board, wherein the resistors are formed by a screen printing method between pairs of the resistor-element electrodes, the resistor-element electrodes are connected to the board terminal pads through the conductors, and the resistor-element electrodes and the conductors have a predetermined height from the second surface of the insulating board, the arrangements of the conductors and the resistor-element electrodes, in the vicinities of the respective resistor elements, are equal or similar to each other, and the direction and magnitude of a stress applied to the post are grasped from variation in resistance of the resistor elements caused by stimulation resulting from the application of the stress while suppressing variation in shape of each resistor element.