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. 01, 2014
Filed:
Jul. 24, 2012
Moon Hyo Kang, Seoul, KR;
Ji Ho Hur, Yongin-si, KR;
Moon Hyo Kang, Seoul, KR;
Ji Ho Hur, Yongin-si, KR;
Silicon Display Technology, , KR;
Abstract
The capacitive fingerprint sensor according to the exemplary embodiments of the present invention includes: a fingerprint sensing electrode Cfp for sensing a human fingerprint; a first transistor Tin which the amount of currents flowing therethrough changes depending on an output voltage of the fingerprint sensing electrode Cfp; a second transistor Tin which the amount of currents flowing therethrough changes due to a difference between the currents flowing through the first transistor T; and a third transistor Twhich resets a gate electrode of the first transistor Tand provides capacitive coupling with the gate electrode of the first transistor Tvia a pulse signal.