What are the requirements for building an electronic cleanroom?

With the development of computers, microelectronics and information technology, the rapid development of the electronics manufacturing industry has been promoted, and the development of cleanroom technology has also been promoted. At the same time, higher requirements are put forward for the design of cleanrooms.

The design of cleanrooms in the electronics manufacturing industry is a comprehensive technology. Only by fully understanding the design characteristics of the dust-free workshop of the electronics manufacturing industry and achieving reasonable design can the product defect rate of the electronics manufacturing industry be reduced and production efficiency improved.

Features of electronic cleanroom

The cleanliness level is required to be high. The air volume, temperature, humidity, pressure difference, and equipment exhaust are controlled on demand. The illuminance and cleanroom section wind speed are controlled according to design or specifications. In addition, this type of cleanroom has extremely strict requirements for static electricity. Among them, the requirements for humidity are particularly severe, because static electricity is easily generated in an overly dry plant, which can cause damage to the CMOS integration.

1. Generally speaking, the temperature of the electronic cleanroom should be controlled at about 22℃, and the relative humidity should be controlled between 50-60% (special clean workshops have relevant temperature and humidity regulations). At this time, static electricity can be effectively eliminated and people feel comfortable.

2. Chip cleanroom, integrated circuit clean rooms and disk manufacturing workshops are important components of clean rooms in the electronics manufacturing industry. Since electronic products have extremely strict requirements on the indoor air environment and quality during the manufacturing and production process, the main objects are the control of particles and floating dust. At the same time, strict regulations have been made on the temperature and humidity of the environment, the amount of fresh air, and noise.

3. The noise level (empty state) in the 10,000-class clean room of an electronic manufacturing plant: should not be greater than 65dB(A).

4. The vertical flow cleanroom fullness ratio of the clean room of the electronics manufacturing plant should not be less than 60%, and the horizontal unidirectional flow clean room should not be less than 40%, otherwise it will be a partial unidirectional flow.

5. The static pressure difference between the clean room and the outside of the electronics manufacturing plant should not be less than 10Pa, and the static pressure difference between the clean area and the non-clean area with different air cleanliness should not be less than 5Pa.