PCB etching machine is a piece of equipment commonly used in the electronics manufacturing industry, mainly used to make printed circuit boards (PrintedCircuitBoard, PCB for short).
It works by etching chemicals into the copper layer on the PCB board to form the required wire patterns and pads for connecting electronic components.
Components of PCB etching machine
Below, we will introduce in detail the working principle of the PCB etching machine and its related contents. First of all, the PCB etching machine mainly consists of the following parts:
1. Corrosion tank: The corrosion tank is the area where the PCB board is placed, which contains chemical etching liquid. The chemicals in the etching solution corrode the copper layer to remove unwanted parts.
2. Conveying system: Conveying system is used to transfer PCB boards from one location to another. There are usually two delivery methods, one is manual operation and the other is automated delivery.
3. Control system: The control system is used to control the operation of the PCB etching machine, including setting parameters such as etching time, temperature and speed, and ensuring the safety of the operation.
The process of PCB etching machine
Next, let’s take a look at the workflow of the PCB etching machine:
1. Design the PCB pattern: First, you need to use electronic design automation tools (EDA) to design the circuit diagram and layout of the PCB.
2. Make PCB drawings: Converting the designed circuit diagram and layout into PCB drawings is a key step in PCB manufacturing.
3. Make a photosensitive film: On the basis of making a printed image, make a photosensitive film.The black patterns on the photosensitive film correspond to the positions of wires and pads on the PCB.
4. Film covering: Cover the photosensitive film on the surface of the PCB board to ensure that it is consistent with the position of the wire pattern.
5. Exposure and development: Put the PCB board into the PCB etching machine, and the machine will automatically complete the exposure and development process.During the exposure process, ultraviolet light passes through the photosensitive film to expose it. Next, after development, the PCB board is rinsed with developer to expose the conductor pattern.
6. Etching: Place the PCB board in an etching tank. The chemical etching liquid in the etching tank will corrode away the unnecessary copper layer. Only the wires and pads are retained.
7. Cleaning: After etching is completed, take the PCB board out of the etching tank and use detergent to clean the PCB board to remove residual chemicals.
8. Drilling and assembly: According to the design requirements, drill and assemble the PCB board, solder the electronic components to the PCB pads, and complete the final PCB production.
Through the PCB etching machine, the PCB boards produced have high precision and stability, which can meet the requirements of the electronic manufacturing industry for complex circuits.
I hope that through the introduction of this article, you will have a deeper understanding of the working principle of the PCB etching machine and the PCB production process.
China PCB etching machine manufacturers
NAURA Technology Group Co., Ltd. (Hereinafter referred to as NAURA), is a leading enterprise of integrated circuit high-end technological equipment in China. It was formed through a strategic restructuring between Beijing Sevenstar Electronics Co., Ltd. (Hereinafter referred to as Sevenstar Electronics) and Beijing North Microelectronics Co., Ltd. (Hereinafter referred to as NMC).
NAURA mainly engages in semiconductor equipment, vacuum equipment, new energy lithium battery equipment and precision components businesses, which provide solutions for semiconductors, new energy resources, new materials as well as other related fields. At present, NAURA owns four major industrial manufacturing bases, and its marketing service system covers the major countries and regions in Europe, America and Asia.
Main business and products
Advanced Micro-Fabrication Equipment Inc. China (AMEC, stock code: 688012) is a global micro-fabrication equipment company serving customers in the semiconductor industry and adjacent high-tech sectors.
In 2019, Advanced Micro-Fabrication Equipment Inc. China (AMEC) listed in the new Science and Technology Innovation Board of the Shanghai Stock Exchange. With rapid development and solid strength, It has footprint in 10 regions around the world and provides on-site support for customers.
Main business and products
Founded in 2002, KINGSEMI is a national high-tech company started from Shenyang Institute of Automation, Chinese Academy of Sciences. They specialize in the research and development, production, sales and service of semiconductor fabrication equipment, and they are fully committed to providing customers with integrated solutions for semiconductor equipment and process technologies.
As a leading manufacturer of high-end semiconductor fabrication equipment in China, KINGSEMI’s full line-up of products include spin coater/developer, spray coater, scrubber, wet etcher, single-wafer cleaner, and other products, which all can be flexibly customized according to the process requirements of customers.
Main business and products
ACM Research( Shanghai) was established in 2005. It is an integrated circuit equipment company introduced in Shanghai and a semiconductor equipment manufacturer with world-leading technology.
ACM integrates R&D, design, manufacturing and sales to provide high-end semiconductor equipment to customers around the world. The main products include single wafer and tank wet cleaning equipment, electroplating equipment, stress-free polishing equipment, vertical furnace tube equipment, front-end coating and development equipment, and PECVD equipment.