What is the core of etching processing technology?

Etching is a technique that removes material using a chemical reaction or physical impact. Etching technology can be divided into two categories: wet etching and dry etching. Usually referred to as etching, also known as photochemical etching, it refers to removing the protection of the area to be etched after exposure, plate making and development, and contacting chemical solutions during etching to achieve the effect of dissolving corrosion and forming concave and convex or hollow molding effects. It was first used to make printing concave and convex plates such as copper plates and zinc plates. It is also widely used to reduce the weight of instrument paneling, famous brands, and the processing of thin workpieces that are difficult to process with traditional processing methods. After continuous improvement and development of process equipment, it can also be used It is used for the processing of precision etching products of electronic wafer parts in the aviation, machinery, and chemical industries. Especially in the semiconductor manufacturing process, etching is an indispensable technology.