The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 10, 1996
Filed:
Mar. 14, 1995
Nippondenso Co., Ltd., Kariya, JP;
Abstract
A pressure detector comprises a pressure sensitive element composed of a semiconductor substrate having at least four gauge resistances and outputting signal in response to a pressure. A pressure transmission member is provided on the surface having the gauge resistors of the pressure sensitive element, for transmitting the pressure to the pressure sensitive element. Taking a crystal face of (110) as the face orientation of the pressure sensitive element, a bridge circuit is constructed by disposing a pair of gauge resistors in the direction of <110> of the crystal axis, disposing another pair of gauge resistors in the direction of <100> of the crystal axis and by connecting them each other. The bridge circuit is located within a pressurized surface which the pressure transmission member presses. Further, temperature compensating resistors are disposed in the direction of <100> of the crystal axis so as to be located also within the area of the pressurized surface.