Jiangsu Yongxin New Materials Co., Ltd.'s main products are micron diamond wires. This product has five characteristics:
The first is high cutting efficiency. It takes about 10 hours to cut a single crystal silicon wafer with a traditional mortar. It only takes 2 hours to cut with a micron diamond wire, and the speed can be increased five times.
The second is less material loss. The diameter of the micron diamond wire is smaller and thinner than the mortar formed by mixing the cutting fluid with silicon carbide, which results in less gap loss, and the damage layer caused by the micron diamond wire is smaller than that of the mortar wire, which is beneficial for cutting thinner Silicon wafer. Thinner wire diameters and thinner slices are beneficial to reduce material loss and increase the wafer output rate. Compared with the traditional cutting method, it can increase the wafer output by 15%.
Third, there is little environmental pollution. Mortar cutting will generate a large amount of crystalline silicon cutting waste mortar.The waste mortar contains silicon carbide, polyethylene glycol, silicon powder and metal powder components, which poses a greater environmental threat.Some of the silicon powder with a particle size of less than 0.15 μm are in contact with water or humid air It will quickly react and release flammable gas hydrogen and heat. If it is not properly used and disposed of, it will cause serious pollution. The micron diamond wire uses water-based grinding fluid (mainly water), which is beneficial to improving the working environment and simplifying subsequent processing procedures such as cleaning.
Fourth, the product quality is excellent. Micron diamond wire cutting reduces the processing damage layer, and the accuracy remains stable, and the TTV (the difference between the maximum and minimum values of specific measurement points on the surface of the silicon wafer) is small.
Fifth, low operating costs. Micron diamond wire cutting equipment occupies less capital and space, reduces labor and power costs, and simplifies the entire production process.
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