Now technology is more and more developed, the speed of information dissemination is faster and faster, mobile phones play an irreplaceable role. With the rise of smart phones, apple mobile phones seize the opportunity to open up the market, and domestic mobile phones are now catching up and gradually occupying the market. Domestic mobile phones such as Huawei Xiaomi have grasped the inner needs of the majority of users with advanced design and excellent cost performance. However, the CPU, which is the core component of mobile phones, and the components which can realize various functions, are integrated into the organizer of components - a circuit board to realize so many functions.

What is the production process of mobile phone PCB?

Mobile phone circuit board

First of all, circuit board manufacturers need the production documents provided by customers, that is, the circuit diagram drawn by customers. These circuit diagrams include the working process of the whole circuit board, that is, the connection between various components. To put it simply, which line can supply power, which line can send and receive signals, which line can connect to the antenna, etc.

Draw the completed circuit diagram

Then, the circuit board manufacturer will draw the circuit diagram on a whole board according to the customer's drawing documents. It needs to be mentioned here that this board is made of a special material with a very thin copper coating on the surface. Because our circuits are all made of copper sheet, we map the production drawings to the whole board in a special way, so that the parts without drawing circuits are exposed (that is, the parts with circuits are covered).

Circuit board after exposure

After the above treatment, we now need to put the whole board into a special solution, which can corrode the places not covered by the circuit. In this way, after corrosion, only the copper sheet covered by the circuit is left on the circuit board, which is what we call the circuit diagram.

Automatic production equipment

In this way, the basic circuit has been formed. Then the surface of the board will be sprayed with a layer of insulating material, such as green or blue, and other simple treatment will be carried out, so that a circuit board will be formed. We only need to weld the components in the place where the components are reserved, and then we can realize the functions that our mobile phone needs to realize.

This kind of circuit board has applications in all walks of life, such as electric power, automobile, household appliances, mobile phones, etc. As long as there is power and control, it can not be separated from PCB.