Fingerprint Identification FPCB

Flexible PCB is a kind of printed circuit board which is made of polyimide or polyester film. It has high reliability and excellent flexibility. Referred to as soft board or FPC, it has the characteristics of high density, light weight and thin thickness.

Characteristics of FPCB

1. Thickness. The thickness of FPC must be more flexible and thinner;

2. Folding resistance. Bending is the inherent characteristic of FPC. The future FPC must have stronger bending resistance, which must exceed 10000 times. Of course, this requires better substrate;

3. Price. At this stage, the price of FPC is much higher than that of Rigid PCB. If the price of FPC comes down, the market will certainly be much broader.

4. Process level. In order to meet the requirements of many aspects, the process of FPC must be upgraded, and the minimum aperture, minimum linewidth / wire spacing must meet higher requirements.

Fingerprint identification FPC

Fingerprint module is the core component of fingerprint lock, which is installed on devices such as fingerprint access control, hard disk, mobile phone, etc., which is used to complete fingerprint collection and fingerprint identification. Fingerprint module is mainly composed of fingerprint acquisition module, fingerprint identification module and extended function module (such as lock driving module). FPC fingerprint module is an important part of it.

The FPCB fingerprint module can be divided into three parts according to its fingerprint identification methods

1. Optical fingerprint module, which can identify fingerprint by refraction and reflection of light;

2. The capacitance fingerprint module collects the fingerprint by the value change of capacitance;

3. The RF fingerprint module (scratch fingerprint module) uses a small amount of RF signal to detect the texture.