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:
Jan. 21, 2020
Filed:
Jul. 09, 2019
Tianma Japan, Ltd., Kawasaki, Kanagawa, JP;
Kazushige Takechi, Kawasaki, JP;
Shinnosuke Iwamatsu, Yamagata, JP;
Yutaka Abe, Yamagata, JP;
Toru Yahagi, Yamagata, JP;
Shunsuke Konno, Yamagata, JP;
Mutsuto Katoh, Yamagata, JP;
TIANMA MICROELECTRONICS CO., LTD., Longhua District, Chenzhen, CN;
Abstract
A TFT biosensor includes a gate electrode (silicon substrate), a reference electrode, and enzyme that is fixed to an insulating substrate spatially separated from the gate electrode and the reference electrode. A pH variation in the vicinity of an ion-sensitive insulating film is induced by a reaction between the enzyme and a sensing object material. The TFT biosensor can detect a concentration of the sensing object material with high sensitivity by detecting the pH variation as a threshold voltage shift of characteristics of a gate-source voltage to a source-drain current.