Fingerprint recognizing device having patterned floating electrodes and fabricating method therefor
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United States of America Patent
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Oct 4, 2005
Grant Date -
May 9, 2002
app pub date -
Nov 6, 2001
filing date -
Nov 7, 2000
priority date (Note) -
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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.
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