Testech, Inc.

Mirae Corporation

Ju Hyun Lee

Vladimir Vlaskin

Young Kee Ryu

A method for manufacturing a fingerprint recognition sensor is provided. The method includes providing a CMOS sensor; depositing a transparent electrode layer as a thin film on the upper portion of the CMOS image sensor, to which a terminal of an AC power source is connected, the transparent electrode layer being made of a transparent insulating material and a transparent conductive material; forming a luminescent layer at the upper portion of the transparent electrode layer to generate a light image; forming a dielectric layer at the upper portion of the luminescent layer; and forming a contamination-resistance film at the upper portion of the dielectric layer. With this method, since the CMOS image sensor is utilized, circuit construction can be simplified. In addition, a fingerprint image having a good contrast can be obtained.

Fingerprint recognition sensor and manufacturing method thereof

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.

Fingerprint recognizing device having patterned floating electrodes and fabricating method therefor

A contact light emitting device embodying the invention includes a transparent electrode layer and a luminescence layer. The electrode layer and the luminescence layer are configured such that an electric field can be generated between the electrode layer and an object to be imaged. When the object to be imaged is brought adjacent the luminescence layer, the luminescence layer emits light, which is then converted into an electrical signal.

Growing community of inventors

Choongchungnam-do, South Korea

Ju Hyun Lee