Method for assembling fingerprint identification module and fingerprint sensor cutting method

A method for assembling a fingerprint identification module is provided. During the process of cutting the sensing strip, the thin junction slices between the fingerprint sensors are retained. Consequently, the size of the top surface of the fingerprint sensor is close to a predetermined size. After the thin junction slices are cut, the concave structures are formed on the bottom surfaces of the fingerprint sensors. Consequently, the size of the bottom surface of the fingerprint sensor is smaller than the size of the top surface of the fingerprint sensor. Even if the cutting skew is generated during the cutting process, the fingerprint sensor can pass the size test. Consequently, the production efficiency is enhanced.