What is the relationship between knowledge, fingerprint identification technology and dispensing pro

What is the relationship between knowledge, fingerprint identification technology and dispensing pro

At present, China's second-generation ID card has realized fingerprint collection, dispensing syringe, and major smart phones have realized fingerprint unlocking function.

The principles of fingerprint recognition can be divided into four categories:

one Optical identification; (e.g. fingerprint punch)

two Capacitance sensor; (current mainstream applications, such as smart phones)

three Ultrasonic sensor; (e.g. smartphone)

four Biological RF

What are the dispensing applications of fingerprint identification module on smart phone?

Assembly process flow: place the module on the fixture - component encapsulation - chip underfill - curing - point silver paste - point epoxy adhesive - place the metal ring - fixture fixation - pressure maintaining curing