2024年4月16日发(作者：)

pcb光板生产工艺流程

英文回答：

Printed Circuit Board (PCB) Manufacturing Process Flow.

The manufacturing process of a PCB involves several

steps, including:

1. Design and Layout.

The first step is to design the PCB layout using

computer-aided design (CAD) software. The layout includes

the placement of components, traces, and vias.

2. Artwork Generation.

Once the layout is complete, it is converted into

artwork files that are used to create the physical PCB.

These files include the board outline, copper layers, and

solder mask information.

3. Photolithography.

The artwork files are used to create a photomask, which

is a transparent film that contains the circuit pattern.

The photomask is aligned with a copper-clad laminate and

exposed to ultraviolet light. The light hardens the

photoresist on the laminate, leaving the exposed copper

areas ready for etching.

4. Etching.

The exposed copper areas are etched away using a

chemical or plasma process. This creates the conductive

traces and pads on the PCB.

5. Drilling.

Holes are drilled into the PCB to accommodate

components and vias. Vias are plated with copper to connect

different layers of the PCB.