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:
Jul. 08, 2014
Filed:
Dec. 21, 2010
Hidetaka Noguchi, Hyogo, JP;
Hirofumi Watanabe, Hyogo, JP;
Hidetaka Noguchi, Hyogo, JP;
Hirofumi Watanabe, Hyogo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
Disclosed is a temperature sensor using a work-function-difference-based radiant-ray detecting element that outputs, as a detecting signal of radiant rays, a work function difference between gate electrodes of first and second field-effect transistors sensing the radiant rays. The temperature sensor includes at least a pair of a first work-function-difference-based radiant-ray detecting element having a positive output temperature coefficient; and a second work-function-difference-based radiant-ray detecting element having a negative output temperature coefficient of which an absolute value is equal to an absolute value of the output temperature coefficient of the first work-function-difference-based radiant-ray detecting element.