company news about How does the cleanliness standard affect chip quality?

The impact of cleanliness standards on chip quality is mainly reflected in the following aspects:

1. Particulate pollution control

During the chip manufacturing process, small particles (such as dust and impurities) may cause problems such as lithographic pattern defects, short circuit or open circuit, which seriously affect the performance and reliability of the chip. High cleanliness environments, such as ISO 1-3, can effectively control particles of 0.1 micron and above, ensuring the accuracy of key processes such as lithography, etching and deposition.

2. Process stability

Parameters such as temperature and humidity, air velocity and pressure difference control in the clean room are crucial to the stability of chip manufacturing. Precise environmental control can reduce process fluctuations and improve production efficiency and yield.

3. Prevent cross contamination

By maintaining the positive or negative pressure difference between different clean areas, the clean room can effectively prevent air backfilling in low-cleanliness areas and avoid cross-contamination. This is particularly important for high-precision chip manufacturing.

4. Esd prevention

Static electricity is a common problem in chip manufacturing and can cause damage or degradation of the chip's performance. The clean room protects the chip quality by reducing the generation and accumulation of static electricity through anti-static design (such as anti-static floor, work clothes, etc.).

5. Costs and benefits

Although high cleanliness standards will increase construction and operation costs, they can bring higher economic benefits to enterprises by reducing pollution, improving yield and production efficiency.

6. Adapt to different process requirements

Different areas of chip manufacturing (such as lithography, etching, packaging) have different requirements for cleanliness. Reasonable selection and control of cleanliness levels (such as ISO 1-3 in the lithography area and ISO 5-7 in the packaging area) can meet the needs of different processes and ensure chip quality.

In summary, the cleanliness standard is a key factor to ensure product quality, improve production efficiency and reduce production costs in chip manufacturing.