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.