Quartz glass is a key component in semiconductor manufacturing due to its superior optical transparency, high thermal stability and chemical inertness. However, in certain application scenarios, pure quartz glass may not meet the stringent electrical conductivity requirements. Consequently, quartz glass metallization technology was developed, offering a wider range of applications in the field of semiconductor manufacturing.

1. What is the metallization of quartz glass?

The process of metallization of quartz glass involves the application of metal materials (including aluminium, copper and silver) onto the surface of quartz glass through a defined technique, resulting in the formation of a conductive metal layer. This process enhances the electrical performance of quartz glass, improves its mechanical strength and high-temperature resistance, and enables it to play a greater role in the high-precision and harsh environment of semiconductor manufacturing.

2. The core technology of quartz glass metallization

The metallization of quartz glass is a complex process involving multiple technical steps. Common metallization methods include thermal deposition, sputtering deposition and chemical vapor deposition (CVD). These technologies demand precise control of temperature and atmosphere, as well as ensuring the uniformity, adhesion and conductivity of the metal layer. Each metallization method has its own unique advantages. When selecting a quartz glass product, the decision should be based on the intended usage scenarios, product requirements, and cost-effectiveness.

    3. The application of quartz glass metallization in semiconductor manufacturing

(1) Metallization of lithography masks and optical components

In the semiconductor manufacturing process, lithography technology is of vital importance. The surface metallization treatment of lithography masks and other optical components used in this process can effectively enhance their conductivity and reduce the interference of static electricity. Metallized quartz glass not only has excellent thermal stability and optical transmittance, but also can maintain outstanding electrical performance in high-temperature environments.

(2) Heat sink and heat sink assembly

Semiconductor chips are known to generate a significant amount of heat during operation. In order to avoid the risk of the chips overheating or even being damaged, it is essential that the generated heat is dissipated through the heat sinks in a timely manner. Metallic quartz glass is capable of effective thermal deposition, facilitating effective heat transfer to the heat dissipation system. This process maintains the stability and long-term durability of the glass structure.

(3) Integrated circuit package

In the process of integrated circuit packaging, the metallization of quartz glass not only serves to protect the chip but also enhances the conductivity and reliability of the packaging structure through the metallization layer. This is particularly important for ultra-miniaturized chips. Quartz glass metallization can provide the necessary electrical connections for the package while ensuring stable signal transmission between the chip and the external circuit.

(4) Gas and liquid transmission pipelines

In the semiconductor production process, the precise transmission of gases and liquids is of the utmost importance, and quartz glass, due to its high strength and excellent chemical inertness, is an especially effective solution in this regard. Quartz glass pipes that have undergone metallization treatment are capable of effectively transmitting gases or liquids while maintaining consistent transmission performance in high-temperature and high-pressure environments.