How We Manufacturing PCB

PCB Board Manufacturing is Printed Circuit Board Manufacturing.Kinglisheng is one of the PCB board manufacturers in China with 10 years experience in PCB board manufacturing. We can make PCB boards with layers from 1 - 32 layers.

At Kinglisheng, we have our own technology and stringent production processes, with which we meet and exceed our customers' expectations.Kinglisheng has brought in talented people and cutting-edge technology, and our dedication to delivering quality PCB products and services has helped us earn the trust and respect of our customers.

We are constantly striving to improve our solutions and have not spared any money in investing in new equipment and talented people. This keeps us at the forefront of the industry, and we can offer a first-class service from PCB manufacturing to assembly, testing and delivery. Even if you only have an idea, we can help you realize success. We've done beauty devices, sensors, rechargeable batteries, student management systems and more.

I will introduce our PCB manufacturing process below.

PCB board manufacturing steps

First: PCB film generation

All films for copper and soldermask are made from photo-exposed polyester film. We generate these films from your design files, creating an accurate (1:1) film representation of your design. When submitting Gerber files, each individual Gerber file represents one layer of the PCB.

Second: PCB Selection Raw Material

Industry standard 1.6mm thick FR-4 laminated copper cladding on both sides. The panels will be sized to fit multiple circuit boards.

Third: PCB Drilling

The through holes required to create the PCB design come from your submission using an NC drill and carbide drill bit.

Fourth: PCB without copper plating

In order to through-hole to electrically connect to the different layers of the PCB, a thin layer of copper is chemically deposited in the through-hole. This copper will subsequently be thickened by electrolytic copper plating.

Fifth: PCB Application Photoresist and Imaging

To transfer the PCB design from electronic CAD data to the physical circuit board, we first apply photosensitive photoresist to the panel, covering the entire board area. The copper laminate image (step 1) is then placed on the board and a high intensity UV light source exposes the uncovered portion of the photoresist. We then chemically develop the board (removing the unexposed photoresist from the panel) to form pads and alignments.

Sixth: PCB Pattern Board

This step is an electrochemical process that builds copper thickness into the holes and onto the surface of the PCB. Once the copper thickness has been built up in the circuitry and holes, we apply an additional layer of tin to the exposed surface. This tin will protect the copper plating during the etching process (step 7) and be removed later.

Seven: PCB Striping & PCB Etching

This process is performed in multiple steps. The first is the chemical removal (stripping) of the photoresist from the panel. Then the newly exposed copper is chemically removed (etched) from the panel. The tin applied in step 6 protects the desired copper circuitry from being etched. At this point, the basic circuitry of the PCB is defined. Finally, the tin protective layer is chemically removed (stripped) to expose the copper circuitry.

Eighth: PCB Solder Mask

Next, we coat the entire panel with a liquid soldermask. Using a thin film and high intensity UV light (similar to step 5), we expose the solderable areas of the PCB. The primary function of the solder mask is to protect the majority of the copper circuitry from oxidation, damage, and corrosion, and to maintain circuit isolation during assembly.

Nine: PCB Legend (Screen Printing)

Next, we print the reference marks, logos and other information contained in the electronic file onto the panel. This process is very similar to the inkjet printing process, but is specifically designed for PCBs

Tenth: PCB Surface Finishing

The final surface finish is then applied to the panel. This surface finish (tin/lead solder or immersion silver, gold plating) is used to protect the copper (solderable surfaces) from oxidization and acts as a location for components to be soldered to the PCB.

Eleventh: PCB Fabrication

Last but not least, we used NC equipment to route the perimeter of the PCB from the larger panel. The PCB is now complete and shipped to you shortly.

Above is the process of single sided PCB and double sided PCB board fabrication, multilayer PCB board fabrication will be more complex. Compression lamination is required.

After 11 PCB manufacturing steps, we will test your PCB boards with 100% electronic electronics.

Kinglisheng is a one-stop supplier for all types of printed circuit board manufacturing and complete turnkey PCB assembly. We specialize in meeting all of our customers' requirements as well as a full range of electronic manufacturing services. Every PCB is manufactured to the highest quality standards, including Flex PCB and Rigid Flex PCB boards and board assemblies. Our electronic assembly services are advantageous to the industry in China. From bare circuit boards to box builds and final assemblies, Kinglisheng is your premier source for the most competitive pricing in the industry and is committed to customer satisfaction.