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:
Oct. 04, 2005
Filed:
Nov. 06, 2001
Ju Hyun Lee, Choongchungnam-do, KR;
Ju Hyun Lee, Choongchungnam-do, KR;
Testech, Inc., Chunan Si, KR;
Abstract
A fingerprint recognizing device having patterned floating electrodes is disclosed. The fingerprint recognizing device includes a transparent electrode layer to which one terminal of an AC power source is connected; a light emitting layer for forming an electric field between the transparent electrode layer and a finger forming a ground contact when being contacted with the finger and emitting light by this electric filed for generating an optical fingerprint image according to ridge lines of a fingerprint image; a plurality of patterned floating electrodes arranged on the light emitting layer at a predetermined interval and turned on/off to output the optical fingerprint image; and a transparent insulating layer for transmitting the optical image generated from the light emitting layer.