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Bulk gas quality requirements for panel plants

2026-04-13Views:

The quality requirements of the bulk gas in the panel factory are very strict, and these requirements are directly related to the production quality and performance of the panel. The following is a detailed analysis of the quality requirements for bulk gases in panel plants:

1. purity requirements

the panel factory has extremely high requirements for the purity of bulk gas. Generally speaking, bulk gases such as oxygen, nitrogen, argon, etc., need to reach a certain purity standard in the panel manufacturing process. The purity of these gases is usually expressed in several ways:

  1. percentage representation: Such as 99%, 99.999, etc., the higher the purity, the lower the impurity content in the gas.
  2. "N" notation: n represents the number of 9 in the percentage, for example, 3N represents 99.9 and 5N represents 99.999. In panel manufacturing, a gas purity of 5N or higher is often required.
  3. PPM(Part Per Million) or PPB(Part Per Billion) representation: These units are used to represent the concentration of impurities in the gas, PPM means one part per million, and PPB means one part per billion. For high purity gases, the impurity concentration is usually required to be controlled at the PPM or PPB level.

2. cleanliness requirements

in addition to the purity requirements, the panel factory also has strict regulations on the cleanliness of bulk gases. The cleanliness of the gas is mainly related to the particle size, oil, moisture and other impurities in the gas. If these impurities exceed the standard, they will adversely affect the manufacturing process of the panel, such as affecting the deposition quality and etching accuracy of the thin film.

  • Granularity requirements: The particle size in the gas is usually required to be less than a certain size, such as 0.1 μm or less.
  • Oil and moisture content: These impurities must be controlled at a very low level to avoid contamination of the panel manufacturing process.

3. stability and continuity requirements

the panel manufacturing process also has high requirements on the stability and continuity of the gas supply. The gas supply system must be able to strictly ensure the quality and reliability of the gas under the premise of system safety, stable gas supply and continuous uninterrupted. This includes precise control of parameters such as gas pressure and flow rate, as well as strict limits on the fluctuation range of indicators.

4. certification and compliance requirements

when selecting bulk gas suppliers, panel factories will also pay attention to whether the suppliers have relevant certification and compliance. For example, suppliers need to be certified by international quality management systems such as ISO to ensure that the gases they produce comply with international standards and industry norms. At the same time, suppliers also need to comply with relevant environmental regulations and safety regulations to ensure that the production and use of gas is safe and harmless to the environment and personnel.

5. specific cases

take a panel factory as an example, its quality requirements for bulk gas may include the following aspects:

  • the purity of oxygen is required to reach more than 99.999 percent, and the purity of nitrogen and argon is required to reach more than 99.9995 percent.
  • The particle size in the gas is required to be less than 0.1 μm, and the oil and moisture content is controlled at a very low level.
  • The gas supply system needs to achieve 24-hour uninterrupted supply, and the fluctuation range of parameters such as pressure and flow rate is controlled within a very small range.
  • Suppliers are required to have relevant international quality management system certification and proof of compliance with environmental regulations.

In summary, the panel factory has very strict requirements on the quality of bulk gases, which cover many aspects such as purity, cleanliness, stability and continuity. Only bulk gases that meet these requirements can be used in the panel manufacturing process to ensure the production quality and performance of the panel.

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