1. A fingerprint recognition device comprising: a fingerprint touch unit that a fingerprint touches; and an image sensor for capturing a fingerprint pattern by using a reflected wave reflected from the fingerprint touch unit, and for comparing a comparison reference fingerprint pattern with the captured fingerprint pattern, wherein the fingerprint touch unit and the image sensor are implemented on different surfaces of a semiconductor substrate, and wherein the image sensor includes: a memory for receiving and storing the comparison reference fingerprint pattern; an image sensing block for converting the reflected wave reflected from the fingerprint touch unit into an electrical signal; an image sensor circuit for receiving the electrical signal from the image sensing block, and for capturing the fingerprint pattern; and a signal processing block for determining whether or not the captured fingerprint pattern and the comparison reference fingerprint pattern accord with each other, and for outputting a result of the determination.